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Total Sensing & Control Solutions

Fenwal Electronics1-800-7FENWAL

500 Narragansett Park Drive, Pawtucket, RI 02861phone 401.727.1300 fax 401.728.5390

www.fenwal.com

Invensys Sensor Systems is one of the

world’s leading manufacturers and suppliers

of controls and control systems for a broad

range of applications.

Invensys Sensor Systems combines the

expertise and shared research and develop-

ment resources of some of the sensor

industry’s most recognized and reputable

names. These are names you already know

and trust — like Fenwal Electronics and

Elmwood Sensors, with product lines you

already use. We design and manufacture

everything from electromechanical and elec-

tronic sensing devices to a variety of specialty

products and entire integrated sensing and

control systems.

To learn more about Invensys Sensor

Systems, or to obtain complete technical

specifications on our products, visit us at

www.invensyssensors.com.

Half a Century’sWorth of ExperienceFenwal Electronics has been designing

and manufacturing Negative Tempera-

ture Coefficient (NTC) thermistors for

nearly half a century.

Today, we’re widely regarded as one of the

industry’s premier suppliers of advanced

temperature sensing devices.

In fact, Fenwal Electronics pioneered the use

of temperature sensors for a broad range of

appliance, automotive, industrial, medical,

telecommunications, office automation/data

processing, and military/aerospace applica-

tions. We were first to develop in many of

these markets and continue to expand our

technology to encompass exciting applications

in new and emerging industries.

In addition to offering an extensive inventory of

standard devices, we specialize in designing

products for companies with unique engineer-

ing requirements. Our engineers work closely

with our clients to develop custom solutions

that satisfy the most challenging operating

demands. Whether it’s a standard discrete ther-

mistor or a complete packaged probe assembly,

Fenwal Electronics can create the optimum

sensing device for your unique application.

Half a century has yielded unrivaled technical

expertise, extensive global production capabil-

ities, impressive ongoing research and devel-

opment efforts, and the industry’s broadest line

of temperature sensing devices. Now, with a

new century before us, we’ve added the

resources of the entire Invensys Sensor Sys-

tems family to our credentials.

Together, we are focused on creating “Total

Sensing Solutions.” The Invensys Sensor Systems

group is committed to creating value and com-

petitive advantage for our customers, serving

the global marketplace with local solutions.

State-of-the-Art Manufacturing & Assembly

Fenwal Electronics has production andassembly facilities inNorth America and theWest Indies.

Fenwal Electronics’ thermal head-

quarters is located in Pawtucket,

Rhode Island. The 160,000 square

foot corporate campus houses a

technologically advanced

ISO 9001-certified production

facility as well as the company’s

key engineering design and R&D

resources.

State-of-the-art facilities in St.

Lucia provide additional assembly

capabilities. These and other glob-

al resources, enable us to assure

rapid turn-around times as well as

timely distribution and delivery.

Fenwal Electronics has production andassembly facilities inNorth America and theWest Indies.

Fenwal Electronics’ thermal head-

quarters is located in Pawtucket,

Rhode Island. The 160,000 square

foot corporate campus houses a

technologically advanced

ISO 9001-certified production

facility as well as the company’s

key engineering design and R&D

resources.

State-of-the-art facilities in St.

Lucia provide additional assembly

capabilities. These and other glob-

al resources, enable us to assure

rapid turn-around times as well as

timely distribution and delivery.

State-of-the-Art Manufacturing & Assembly

Designer and Manufacturer of Discrete Thermistors and Custom Packaging Solutions

2M 0402

That production volume becomes evenmore impressive when you consider ourSix Sigma design-to-manufacture strategy.

Of course, Six Sigma is only part of ouroverall quality structure. Like all InvensysSensor Systems companies, Fenwal Electron-ics has implemented what is called a “LeanEnterprise” approach to manufacturing.

The goal of a “Lean Enterprise” is to designand build products that meet customerspecifications and achieve total qualitystandards using the most efficient, reliable,and responsive processes.

Adhering to this strategy, Fenwal Electronicshas measurably improved cycle times,reduced defects, and reduced productioncosts. We’ve also implemented JIT (Kaizen)manufacturing methods as part of our qualityinitiative.

The fact that we produce millions of high-quality NTCs year after year means thatFenwal Electronics has truly achieved LeanEnterprise status. And, it’s precisely thiscommitment to quality that has earnedFenwal Electronics its reputation as a lead-ing manufacturer of advanced temperaturesensing devices.

PART DESCRIPTION FEATURES APPLICATIONSGlass Encapsulated Chip (GEC) Series 135 • Low Cost Ideally suited for automated assembly.A chip thermistor in an axial lead package . • Rugged DO-35 glass encapsulationconfiguration that uses glass diode technology • Available in tape or reel format

• Solderable and weldable• High temperature capability (up to 300°C)

Surface Mount Thermistor (SMD) Series 173 – 175 • EIA Standard package sizes (0805 & 1206) Well suited for PC boards with a high density of end-banded NTC thermistors designed to be mounted onto • Glass-coated ceramic for long-term reliability discrete components.rigid or flexible PC boards using automatic placement methods. • Available in tape or reel format

Standard Chip (leadless) Series 196 • Available in either gold or silver metalization Typically used for overtemperature protection and a thermistor configuration derived from cutting out small • Rapid response time temperature compensation.pieces from a wafer format.

Leaded Chip (uncoated & Epoxy-Coated) • Rapid response time Suited to a wide variety of applications including automotive Series 195, 197 & 199 (see standard chip description) • Rated to 125°C and aerospace electronics, computer and fire detection,

• Available with insulated or uninsulated leads communications, and medical equipment.• Lead lengths up to 5 1⁄2”

.

UNI-CURVE® Series 192 & 194 • Resistance temp. curve interchangeability Available with insulated or uninsulated leads — epoxy-coatedhigh quality, low cost resistance temperature matched • Tolerances as tight as .05°C over a temper- or uncoated interchangeable chip thermistor. ature range

• Epoxy coated

Linear Thermistors Network (LTN®) Series 133 & 137 • Simplifies circuitry in digital readout systems Ideally suited for existing or newly designed circuitry consists of precision resistors that are designed to produce • Greater sensitivity than wire-wound resistance applications where space is a consideration.a resistance change or voltage output that varies linearly bulbs or thermocoupleswith temperature over the selected temperature range.

DISC Thermistor Series 140 – 145 • Low Cost Ideally suited for low cost applications with a PC board mountable thermistor in the shape of a pill. • PC board mountable maximum temperature

• Available in tape or reel format of 150°C.

PTC/Posi-Chip™ Series 235 • Rugged glass encapsulation Ideally suited for automated high volume positive resistive temperature sensor • Excellent long-term stability temperature-dependent applications.Linear PTC Curve, Silicon chip design • Available in tape or reel format

Glass Bead Series 111 & 112 • Hermetically sealed in glass Ideally suited for the most stringent military, a thermistor configuration consisting of a small bead of • Extremely fast response time aerospace and oceanographic applications.thermistor material and two imbedded platinum wires • Excellent long-term stabilitywith a glass coating. • High temperature capability (up to 300°C)

Glass Probe Series 120 & 121 • Hermetically sealed in glass Ideally suited for immersion in fluid and convenient a bead thermistor encapsulated in a long glass sleeve, • Rugged glass encapsulation for mounting in air sensor assemblies.using dumet lead wire extensions. • Excellent long-term stability

• High temperature capability (up to 300°C)

Iso-Curve® Thermistor Series 126 & 129 • Tight tolerance over a variety of temp. ranges For use where curve-matched, interchangeability is interchangeable glass bead or glass probe thermistors, • High temperature capability (up to 300°C) required for precise temperature control and precise consisting of a pair of hermetically sealed thermistors with temperature indication.a combined resistance that precisely matches an established resistance temp/curve over a specified temp/range.

Inrush Current Limiter (ICL™) Series ICL • Maximum steady state current to 30 amperes For use in applications where the inrush of current can a class of power handling thermistors intended to restrict • PC board mountable damage components in a switching power supply and the initial turn-on current when placed in series with such • Rugged design other power devices when the equipment is turned on.components as tungsten filament bulbs or between the • Solderable leads rectifiers and the filter capacitor in a DC power supply.

Fenwal Electronics makes millions of NTC thermistors and specializes in designing custom packages.

Six sigmascience...

Such volume speaks not

only to our manufacturing

capacity, but to the effi-

ciency of our production

process and, ultimately, the

extraordinary popularity of

our solid state temperature

sensing devices.

Fenwal Electronics “specializes” inpackaging its thermistors in a broadrange of standard housings or uniqueconfigurations.

Custom design solutions are availablefor immersion, gas/air sensing, oventemperature probes, medical, aerospaceand general purpose applications.

From rechargeable

batteries torocket science

Fenwal Electronicsmakes sensing devices

that monitor and control temperature

in everything from cell phones to satellites.

And with fully integrated

in-house processing capabili-

ties, we can manufacture pre-

cisely to your specifications,

whether you’re looking for

discrete thermistors or

complete probe assemblies.

Thermistor Assemblies

Fenwal Electronicshas invested nearly $10 million inresearch and devel-opment in the lastdecade.

…investing inresearch

Our in-house laboratories are equippedwith the latest and most advanced precisionmicro-analysis equipment and instrumenta-tion including:

• Scanning Electron microscope (SEM)

• Thermal analysis system

• Particle size and surface area analyzer

• XRF Spectrometer for coating thickness

measurement

• Density and porosimitry analyzers

• Tensile and three point bend strength

tester

So, how does all this help us build a betterthermistor? Our R&D people have the toolsthey need to get the job done. And part ofthe job is revisiting the drawing board on aregular basis.

Our engineers research and evaluate alter-native thermistor materials processes andemerging technologies in our specially-equipped materials lab. Here, they explorenew and more efficient productionprocesses and subject all new products torigorous performance and environmentaltesting. The result is quality-assured proventechnology and an unprecedented degreeof responsiveness.

It takes millions to make

millions. The more we

invest in R&D, the better

the process, the better the

product, and the better the

yield. And that’s better for

our customers.

The tables on the right contain ourstandard product offerings, including

brief product descriptions, a summaryof features and benefits, and an

indication of typical applications. If you don’t see what you’re looking

for here, call us. We specialize in custom applications.

Home | About | News | Product | Solutions | Contact Us | Help

Back FEATURES

● Surface mountable for automated pick and place

● Glass coated ceramic for long term reliability

● Solder plated-Nickel ● Offered in tape and reel for

automated assembly ● Rated to 150o C operating

temperature ● T.C. 10 sec.; D.C. 3.5 mW

SURFACE MOUNTED, END-BANDED NTC THERMISTORS are designed to be mounted onto rigid or flexible PC boards using robotic technology. They are particularly well suited for PC boards with a high density of discrete components. The solder-plated Ni-barrier terminations are easily soldered and meet ANSI/J-STD-002 Method B. The thermistor is designed to withstand solder temperatures of 260oC for 30 seconds.

SURFACE MOUNTED, END-BANDED CHIPS

Parameter Specification

EIA Package Designation 0805 1206

Part Number* 173-xxxxxx-301 175-xxxxxx-301

Length (L) Width (W)

Thickness (T)

.079 ± .008

.049 ± .008 .051 MAX

.126 ± .008

.063 ± .008 .059 MAX

Termination Width .020 ± .010 .025 ± .015

ELECTRICAL CHARACTERISTICS ** 5% TOLERANCE @ 25° C

Resis. at 25° C (Ohms)

R-T Curve

Part Number 0805 Package

Part Number 1206 Package

500 5K 10K 15K 33K 50K 100K 500K

8 24 16 16 16 16 18 1

173-501AAF-301 173-502GAF-301 173-103LAF-301 173-153LAF-301 173-333LAF-301 173-503LAF-301 173-104KAF-301 173-504OAF-301

175-501AAF-301 175-502GAF-301 175-103LAF-301 175-153LAF-301 175-333LAF-301 175-503LAF-301 175-104KAF-301 175-504OAF-301

** 2%, 3%, 5%, 10% tolerance units are also available.

Note: Use the last 2 digits of the part number to designate packing requirements: B1 = Bulk Pack, K1 = 1,000/reel, O1 = 3,500/reel.

Honeywell Sensing and Control - Thermal - Products - Industrial - End Band

Courtesy of Steven Engineering, Inc. ● 230 Ryan Way, South San Francisco, CA 94080-6370 ● General Inquiries: (800) 670-4183 ● www.stevenengineering.com

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Honeywell Sensing and Control - Thermal - Products - Industrial - Uni


Back

FEATURES

● Low Cost ● Rugged DO-35 glass

encapsulation ● High temp. capability

(300 ºC) ● Delivery from stock ● ideal for highly

automated assembly ● Also available on tape

and reel ● D.C. 2.5mW/ ºC in

still air minimum ● T.C. 4 sec. in still air

maximum

GLASS ENCAPSULATED CHIP THERMISTORS are a high quality line of Low Cost, Hermetically Sealed, glass encapsulated units that evolved from Feriwal Electronics, Inc.'s highly successful and field-proven Standard Chip Series. Added to the feature of "True Low Cost' is "Delivery from Stock" in high volume. They are designed to cover the full temperature range of -60o C to +300o C. The uniform dimensions are ideally suited for automated assembly. A rugged sensor it is designed for any application which demands reliability at a Low Cost. The tinned copper clad steel leads are both solderable and weldable, and leads may be formed/cut for radial lead applications. Fenwal Electronics' Glass Encapsulated Chip Thermistors are available to our customers Bulk Packaged or on Tape and Reel.




Honeywell Sensing and Control - Thermal - Products - Industrial - Uni


Back FEATURES

● Surface mountable for automated pick and place ● Accuracy ● High stability ● High reliability ● Long life ● Cost saving ● Small size ● Epoxy coated ● D.C. 0.75 mW/o C minimum ● T.C. 15 sec. maximum ● Max. Temp. 125o C

UNI-CURVE® INTERCHANGEABLE THERMISTORS are high quality, low cost resistance temperature matched interchangeable thermistors. They offer additional cost savings by eliminating the need for individual resistance temperature calibration, as well as standardization of circuit components and simplification of design and replacement problems. They are particularly well suited for use in applications such as temperature measurement, indication and control. Other applications include: compensation of ambient temperature effects on copper coils, transistors, integrated circuits and other semiconductor devices. Fenwal Electronics' high volume Uni-Curvel manufacturing capability provides availability of interchangeable thermistors at low cost with the quality and ruggedness to meet the rigid design requirements of MIL-T-23648.

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Honeywell Sensing and Control - Thermal - Products - Industrial - Chips


Back

FEATURES

● Rapid response time ● Leads available insulated

and uninsulated ● Thermistor available epoxy

coated or uncoated ● Rated to 125 ºC ● D.C. 0.75 mW/ ºC minimum ● T.C. 15 sec. maximum

CHIP SERIES STANDARD NTC THERMISTORS are offered in a broad range of custom resistance values. Design engineers are offered a wide variety of applications usage in areas, such as: communications, medical, computer and fire detection and instrumentation test equipment; automotive and aerospace electronics and in other electronic design devices.

LEADS

● Uninsulated leads are .008" dia., tinned copper for 100) Ohms or less and tinned copper alloy from > 1000 Ohms

● Also available with insulated leads .010" dia., nickel wire teflon insulated 1 1/2" long and furnished with 1/4" stripped ends or 0.016" and 0.020" tin-plated copper leads.


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Honeywell Sensing and Control - Thermal - Products - Industrial - Discs


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FEATURES

● PC board mountable ● Low cost ● Rugged design ● Solderable leads ● Versatile ● Available on tape or reel ● .1 inch to .4 inch diameter ● Res values from 100 Ohms

to 100K Ohms● Tinned copper leads

DISC THERMISTORS are ideally suited for low cost applications with a maximum temperature of 150oC. They lend themselves to be PC board mounted. Other lead styles available on request.


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Honeywell Sensing and Control - Thermal - Products - Industrial - ICL


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FEATURES

● PC board mountable ● Rugged Design ● Solderable leads ● High quality ● Low cost

Fenwal Electronics INRUSH CURRENT LIMITERS are a cost-effective way of limiting the Inrush of current that can damage components in a switching power supply and other power devices when the equipment is turned on.

Inrush Current Limiter Specifications

Resistance @ 25oC, +/- 20% 0.5 to 220 Ohms

Maximum Steady State Current 1 to 30 Amperes

Resistance at Maximum Steady State Current 0.01 to 2.34 Ohms

Operating Temperature -40oC to +185oC

Storage Temperature -40oC to +220oC

Lead Pull Strength 1 kg, applied in axial direction

Solderability of Leads More than 95%

Lead Construction Straight tinned copper (kinked available)

Coating Black Silicone

Physical Dimensions

Maximum Diameter 9.5mm (0.374") to 32.0mm (1.260")

Maximum Thickness 5.0mm (0.204") to 8.0mm (0.327")

Lead Diameter 0.8mm (0.032") to 1.0mm (0.040")




Honeywell Sensing and Control - Thermal - Products - Industrial - ICL


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Honeywell Sensing and Control - Thermal - Products - Industrial - LTN


Back

FEATURES

● Simplifies circitry in digital readout systems

● Interchangeability for unit to unit

● High accuracy ● Greater sensitivity than wire-

wound resistance bulbs or thermocouples

● May be PC board mounted or purchansed as individual components to allow design flexibility

● No known reference temperature or cold junction is required as in thermocouples

● May be used in either a voltage or resistance mode

LINEAR THERMISTOR NETWORKS (LTN®) consist of precision resistors and thermistors which are designed to produce a resistance change or voltage output that varies linearly with temperature over the selected temperature range. They provide a sensitivity that is hundreds of times greater than that of thermocouples or wire-wound resistance bulbs. The Composite Series consists of one twin thermistor and two precision resistors, and is designed to provide greater flexibility in mounting and location. These are also available in probe assemblies to your specifications and are ideally suited for use where space must be considered in existing or newly designed circuitry.




Honeywell Sensing and Control - Thermal - Products - Industrial - Posi Chip


Back

FEATURES

● Low cost ● Rugged glass encapsulation ● Ideal for highly automated

assembly ● Also offered in tape and reel

package ● Excellent long term stability ● Non polarizing ● D.C. 2 mW/o C in still air

minimum ● T.C. 4 sec. in still air

maximum

POSI-CHIPTM SERIES PTC THERMISTORS are silicon based semiconductors whose small size, rugged glass encapsulation and low cost make them ideally suited for automated high volume temperature dependent applications. Resistance values are offered between 50 Ohms and 2,000 Ohms and are designed to cover an operation temperature range of -55oC to +150oC.




Honeywell Sensing and Control - Thermal - Product - Aerospace - Small Bead


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FEATURES

● Ultra fast response ● Hermetically sealed in

glass ● Excellent long-term

stability ● Micro size ● .001" dia. platinum

iridium leads ● D.C. .1 mW/o C minimum ● T.C. 1 sec. maximum

SMALL BEAD THERMISTORS feature relatively uniform size, offer ultra fast time response and are highly sensitive to electric power. They are ideally suited for usage in low heat capacity applications and their micro size makes them perfect for use in extremely small assemblies such as Catheter and Hypodermic Needles. In addition, Small Bead Thermistors are widely used in self-heat applications such as Gas Analysis, Gas Flow Measurement and Thermal Conductivity Analysis.


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Honeywell Sensing and Control - Thermal - Product - Aerospace - Standard Bead


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FEATURES

● Fast time response ● Available in

tolerances from 1% to 25%

● Rugged ● High reliability ● Hermetically sealed in

glass ● Excellent long-term

stability ● Weldable platinum

iridium leads ● .004" dia. ● D.C. .4 mW/o C

minimum ● T.C. 4 sec. maximum

STANDARD BEAD THERMISTORS are hermetically sealed in glass, and are designed for use in low cost, general purpose temperature measurement and control applications. The units also feature small size and provide maximum stability when used to 300oC for high temperature design requirements. They are ideally suited for the most stringent Military, Aerospace and Oceanographic Applications. The Standard Bead Thermistors meet MIL-T-23648 requirements.


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Honeywell Sensing and Control - Thermal - Product - Aerospace - ISO-Curve® Series


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FEATURES

● Interchangeability ● Accuracy ● High sensitivity ● High stability ● Cost saving ● High reliability ● Small size ● Unlimited life ● D.C. - See below ● T.C. - See below

ISO-CURVE® GLASS BEAD AND GLASS PROBE THERMISTORS are designed for use as precision sensing elements where curvematched, interchangeability is required for precise temperature control and precision temperature indication. These highly reliable thermistors consist of a matched pair of hermetically sealed thermistors and may be selected to tolerances only limited to the systems capability available to test them.


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Honeywell Sensing and Control - Thermal - Product - Aerospace - E-1 Matched Bead


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FEATURES

● E-I matched in air or helium

● Resistance matched at 25o C

● Interchangeability pairs

● Long life ● Compression type

glass hermetic seal ● High pressure solder

seal

E-I MATCHED BEAD THERMISTORS are designed for use in gas chromatography and other thermal conductivity gas analysis instruments. Each bead is mounted to a special hermetically sealed header. For maximum sensitivity, the higher resistance units should be used at higher ambient temperatures.


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