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THERMOSTATS - PRECISION

3150/3156 Series Low Silhouette

Hermetic Thermostats

The 3150/3156 Series is a single pole, single throw switch activated by a

snap-action bimetal disc. Temperature calibrations are pre-set at the

factory and each unit is 100% thermally and mechanically inspected. It is

available to open or close on temperature rise. The case is laser welded to

form a hermetically-sealed steel housing with a glass-to-metal seal at the

terminal junction. The low silhouette and compact design make it

especially well suited for applications that require miniaturization. The

3156 Series has gold alloy contacts for low voltage applications.

Amperage:

0.5 A resistive (3156 Series)

7 A resistive (3150 Series)

Housing material:

Steel housing with glass-to-metal seal at

terminal junction

Operating temperature range:

-29 °C to 177 °C [-20 °F to 350 °F]

Environmental exposure range:

-62 °C to 260 °C [-80 °F to 500 °F]

Dielectric strength:

MIL-STD-202, Method 301

750 Vac 60 Hz terminal to case (3150, 3156 Series)

1250 Vac 60 Hz terminal to case (3150U, 3156U Series)

1500 Vac 60 Hz terminal to case (3150UX Series)

Insulation resistance:

MIL-STD-202, Method 302, Condition B

50 MOhm, 500 Vdc applied

Contact resistance:

MIL-STD-202, Method 307

25 mOhm (3156 Series)

50 mOhm (3150 Series)

Hermetic seal:

MIL-STD-202, Method 112, Condition A

1x10-5 atm cc/s

Moisture resistance:

MIL-STD-202 Method 106

3800 Series Industrial-Grade Thermostats

for Severe Duty Applications

The 3800 Series is used where high levels of vibration and mechanical

shock are common but a military device is not required. It is easily

customized for use in a variety of applications.

Amperage:

7 A resistrive

Housing material:

Steel housing with glass-to-metal seal at terminal junction

Operating temperature range:

-29 °C to 260 °C [-20 °F to 500 °F]

Environmental exposure range:

-62 °C to 260 °C [-80 °F to 500 °F]

Dielectric strength:

MIL-STD-202, Method 301

1250 Vac terminal to case

Insulation resistance:

MIL-STD-202, Method 302, Condition B

50 MOhm min. terminal to case

Contact resistance:

MIL-STD-202, Method 307

50 mOhm max.

Hermetic seal:

MIL-STD-202, Method 112, Condition A

1 x 10-5 atm cc/s

Moisture resistance:

MIL-STD-202, Method 106

Vibration (random):

MIL-STD-202, Method 214

30 g, 20 Hz to 2,000 Hz

Vibration (sinusoidal):

MIL-STD-202, Method 204,

Condition D 20 G, 20 Hz to 2,000 Hz

Mechanical shock:

MIL-STD-202, Method 213, 400 G

Thermal shock:

MIL-STD-202. Method 107, Condition B

Acceleration:

MIL-STD-202, Method 212, 20 G

SERIES NAME

3150 Low Silhouette Hermetic Thermostat

3150U Low Silhouette Hermetic Thermostat

3150UX Low Silhouette Hermetic Thermostat

3156 Low Silhouette Hermetic Thermostat

3156U Low Silhouette Hermetic Thermostat

SERIES NAME

3800 Industrial Grade Thermostat

24PC Datasheet(PDF) 32 Page - Honeywell Solid State Electronics Center

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