NASA Goddard Space Flight Center Specifications Specifications for *EEE parts, including the following: S-311-641: "Switches, Thermostatic, General Requirements" [.pdf] S-311-641/03a: "Switch, Thermostatic, Corrosion Resistant Steel, Hermetic " S-311-641/04: "Switch, Thermostatic, Bimetallic, SPST, High Power, Hermetic, Detail Specification" [.pdf] *EEE Parts for Space Applications: The NAPA Electronic Parts and Packaging Program (NEPP) website supports parts engineers, designers, system assurance managers and project managers in selecting, testing and procurement of EEE parts for use on NASA programs/ projects by providing links to parts related documents developed by NASA centers and Defense Supply CenterColumbus (DSCC). We encourage you to see the new EEE- INST-002 (GSFC Parts Document) - Supersedes 311- INST-001, Rev. A. The revised document has added derating guidelines and four new sections to provide instructions for plastic encapsulated microcircuits, crystals, heaters, and switches. Section S2 addresses thermal switches. Selection, Screening and Qualification requirements, as well as references to military specifications, and test methods have also been updated.

700 Series High Reliability Thermal Switches have been relied upon to perform on the earliest unmanned satellites to today's most modern manned and un-manned space vehicles, including both military and civilian programs: Space Shuttle Space Station Apollo Gemini Hubble Telescope Mercury 2003 Mars Rovers NEAR Skylab SOHO TESS GPS Lunar Prospector Viking ... and many others DOWNLOAD DESCRIPTION TS700 Data Sheet Contains configuration drawings and sample ordering codes for this product. [.pdf - requires Adobe Acrobat Reader] TS700 Thermal Switch High Reliability Inventory Select and reserve off-the-shelf, space qualified thermostats [.xls - requires Microsoft Excel] End Item Inventory of 700 Series thermal switches that are now available for immediate delivery! Search this inventory for End Items that are currently in stock. [.xls - requires Microsoft Excel - under the 700 Series worksheet tab] Then contact the factory to place your order for immediate delivery. When ordering, provide the Part Number, Order Code and Quantity shown in the inventory. Credit card orders are accepted and will accelerate the delivery process. THERMAL SWITCHES exported from the United States must be done in accordance with the Export Administration Regulations (EAR) and/or the International Traffic in Arms Regulations (ITAR) as applicable.

JUST RELEASED: AEROSPACE REPORT NO. TOR-2006(8583)-5236, "Technical Requirements for Electronic Parts, Materials, and Processes Used in Space and Launch Vehicles." Full document: .pdf, 333 pages, 2meg, See Page 205, Section 1200, "Switches" Extracted Section 1200: .pdf, 14 pages, 97k See SECTION 1220, "Thermal Switches (MIL-PRF-24236)"

Specifications for 700 Series Thermal Switches PERFORMANCE Contact Arrangement: SPST Contact Ratings: 5 amps resistive load @ 28 VDC 2.0 amperes resistive load at 115 VAC RMS 1.0 amp inductive load (L/R 0.02) @ 28 VDC, 115 VAC RMS 1.0 ampere lamp load at 28 VDC/115 VAC RMS 2.5 amperes resistive at 28 VDC, for differentials less than or equal to 10ºF Endurance: 100,000 cycles min. @ rated load Dielectric Withstanding Voltage: 1250 VAC RMS - terminals to case, 500 micro amperes maximum leakage Insulation Resistance: 500 megohms min. @ 500 VDC - terminals to case ENVIRONMENTAL (MIL-STD-202) Vibration (Sine): Meth. 204, 50g to 2000 Hz, 30g to 3000 Hz Vibration (Random): Meth. 214, over 30g RMS, 20 to 2000 Hz Ambient Temperature Range: -330°F to 400°F (-201° to +204°C) Moisture Resistance: Meth. 106, 240 hrs., 90-98% RH, & from +77° +149°F (+25°C to 65°C) Hermetic Seal: Meth. 112, Cond. C, Procedure IV, 1.0 x 10-8 Atm, cc/sec max leak rate Solderability: Meth. 208 Shock: Meth. 213, 100g/6ms, 750g/0.5ms Thermal Shock: Meth. 107, Cond. B, -120 to +257°F (-49°C to 125°C) Acceleration: Meth. 212, Cond. A, 30g Salt Spray: Meth. 101, Cond. B, 48 hours

Acceptance Test Data for 700 Series Thermal Switches TEST CRITERIA Contact resistance monitored burn-in 1,000 cycles min., 50 megohms max Random vibration 22.7g RMS Particle impact noise detection (PIND) No particle noise Calibration/setpoint 3 cycles Creepage (ARC) duration 3 cycles <5msec, 600 VDC Seal: fine leak: <1 X 10-8 Atm. cc/sec gross leak: No bubbles Contact resistance - 3 cycles 25 milliohms max (6 VDC. 0.1A) Dielectric withstanding voltage - Terminals to case 1250 VAC RMS - terminals to case, 60 Hz Insulation Resistance - Terminals to case 500 megohms min. @ 500 VDC Weight Varies by configuration Inspection of product Final visual

Tolerance Limits Specified Temp Setpoint Range °F (°C) Standard Setpoint Tolerance °F (°C) -120 to 0 (-84.4 to -17.8) ±6 (3.3) +1 to 250 (-17.2 to 121.1) ±5 (2.8) 251 to 300 (121.7 to 148.9) ±7 (3.9)

Honeywell's TS700, High-Reliability Thermal Switch is the result of years of meticulous engineering and a relentless path of continuous improvement. Discriminating designers have specified them from the earliest unmanned satellites to today's most modern manned and un-manned space vehicles. The product line continues to evolve with the addition of many new standards. The breadth of offerings allows users to select any number of off-the-shelf designs. This saves engineering resources by eliminating the need for customer specifications and non-recurring engineering. Recent design improvements have led to even greater reliability and temperature stability. These high-reliability switches receive an extensive battery of screening tests, thus assuring customers a product with the highest degree of workmanship and reliability. They meet or exceed the requirements set forth in MIL-PRF-24236/1, Type I, Class 4. Residual gas analysis and Group B testing are performed on every production lot. Upon testing and inspection Honeywell serializes each switch and completes an individual data sheet containing the acceptance test data. No matter what your high-reliability application may be, Honeywell has the right solution for your system. Contact Us, if you have questions, need more information, or are interested in ordering TS700 Thermal Switches.