The HONEYWELL 38HM9 is a hermetically sealed miniature snap-action switch designed for demanding environments, including military, aerospace, and industrial applications. Manufactured in the US, this switch offers reliable performance in extreme temperatures and harsh conditions, making it ideal for aerospace, military vehicles, marine environments, and deep space applications.
Product Features
Hermetically Sealed Construction: Symbol 5 hermetic seal with glass-to-metal and metal-to-metal sealing ensures protection against dust, water, particulate contaminants, and corrosive gases.
High Temperature Range: Operates reliably from -184 °C to 260 °C [-300 °F to 500 °F], maintaining performance across a wide temperature spectrum.
Durability: Mechanical endurance of at least 25,000 operations and electrical endurance of 25,000 operations.
Electrical Ratings: Up to 4 A at 28 Vdc, with options for gold or silver contacts for low energy or power duty loads.
Versatile Mounting: Available with wire leads or through-hole solder posts for flexible installation.
Certifications: MIL-PRF-8805 qualified and UL 508 certified (select versions).
Compact Design: Miniature size suitable for space-constrained applications.
Material: Housing made from 300 series stainless steel for corrosion resistance.
Contact Materials: Silver, gold, or bifurcated gold contacts for various control needs.
Additional Options: Auxiliary actuators such as straight leaf, roller leaf, straight lever, and roller lever to expand functionality.
Specifications
Characteristic
Details
Description
Hermetic sealed miniature snap-action switch
Housing Material
300 series stainless steel
Mechanical Endurance
25,000 operations minimum
Electrical Endurance
25,000 operations minimum
Dielectric Voltage
1000 Vrms for 1 minute
Circuitry
SPDT
Contact Material
Silver, gold, or bifurcated gold
Electrical Rating
Up to 4 A at 28 Vdc
Sealing
Symbol 5 hermetic sealed to MIL-PRF-8805
Temperature Range
-65 °C to 121 °C [-85 °F to 250 °F], optional -184 °C to 260 °C [-300 °F to 500 °F]
Vibration
Symbol 2 (15 g), 10 to 2000 Hz
Mechanical Shock
Shock type M (100 G, sawtooth)
Approvals
MIL-PRF-8805, UL 508 (File E66520)
Applications
Military aircraft and helicopters: landing gear, engine fuel valves, external hatches
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Manufactured in the US, this switch offers reliable performance in extreme temperatures and harsh conditions, making it ideal for aerospace, military vehicles, marine environments, and deep space applications.\u003c\/p\u003e\n\n\u003ch3\u003eProduct Features\u003c\/h3\u003e\n\u003cul\u003e\n \u003cli\u003e\n\u003cstrong\u003eHermetically Sealed Construction:\u003c\/strong\u003e Symbol 5 hermetic seal with glass-to-metal and metal-to-metal sealing ensures protection against dust, water, particulate contaminants, and corrosive gases.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eHigh Temperature Range:\u003c\/strong\u003e Operates reliably from -184 °C to 260 °C [-300 °F to 500 °F], maintaining performance across a wide temperature spectrum.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eDurability:\u003c\/strong\u003e Mechanical endurance of at least 25,000 operations and electrical endurance of 25,000 operations.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eElectrical Ratings:\u003c\/strong\u003e Up to 4 A at 28 Vdc, with options for gold or silver contacts for low energy or power duty loads.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eVersatile Mounting:\u003c\/strong\u003e Available with wire leads or through-hole solder posts for flexible installation.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eCertifications:\u003c\/strong\u003e MIL-PRF-8805 qualified and UL 508 certified (select versions).\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eCompact Design:\u003c\/strong\u003e Miniature size suitable for space-constrained applications.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Housing made from 300 series stainless steel for corrosion resistance.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eContact Materials:\u003c\/strong\u003e Silver, gold, or bifurcated gold contacts for various control needs.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eAdditional Options:\u003c\/strong\u003e Auxiliary actuators such as straight leaf, roller leaf, straight lever, and roller lever to expand functionality.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003ctable\u003e\n \u003ctr\u003e\n \u003cth\u003eCharacteristic\u003c\/th\u003e\n \u003cth\u003eDetails\u003c\/th\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eDescription\u003c\/td\u003e\n \u003ctd\u003eHermetic sealed miniature snap-action switch\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eHousing Material\u003c\/td\u003e\n \u003ctd\u003e300 series stainless steel\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eMechanical Endurance\u003c\/td\u003e\n \u003ctd\u003e25,000 operations minimum\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eElectrical Endurance\u003c\/td\u003e\n \u003ctd\u003e25,000 operations minimum\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eDielectric Voltage\u003c\/td\u003e\n \u003ctd\u003e1000 Vrms for 1 minute\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eCircuitry\u003c\/td\u003e\n \u003ctd\u003eSPDT\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eContact Material\u003c\/td\u003e\n \u003ctd\u003eSilver, gold, or bifurcated gold\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eElectrical Rating\u003c\/td\u003e\n \u003ctd\u003eUp to 4 A at 28 Vdc\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eSealing\u003c\/td\u003e\n \u003ctd\u003eSymbol 5 hermetic sealed to MIL-PRF-8805\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eTemperature Range\u003c\/td\u003e\n \u003ctd\u003e-65 °C to 121 °C [-85 °F to 250 °F], optional -184 °C to 260 °C [-300 °F to 500 °F]\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eVibration\u003c\/td\u003e\n \u003ctd\u003eSymbol 2 (15 g), 10 to 2000 Hz\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eMechanical Shock\u003c\/td\u003e\n \u003ctd\u003eShock type M (100 G, sawtooth)\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eApprovals\u003c\/td\u003e\n \u003ctd\u003eMIL-PRF-8805, UL 508 (File E66520)\u003c\/td\u003e\n \u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eApplications\u003c\/h3\u003e\n\u003cul\u003e\n \u003cli\u003eMilitary aircraft and helicopters: landing gear, engine fuel valves, external hatches\u003c\/li\u003e\n \u003cli\u003eCommercial aircraft: hatch detection, HVAC, oxygen valves, waste management\u003c\/li\u003e\n \u003cli\u003eSpacecraft: external hatch and door position, engine fuel sensing\u003c\/li\u003e\n \u003cli\u003ePower generation, oil, and gas: pressure, temperature, and flow switches\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eAdditional Information\u003c\/h3\u003e\n\u003cp\u003eFor detailed specifications and customization options, please refer to the \u003ca href=\"https:\/\/prod-edam.honeywell.com\/content\/dam\/honeywell-edam\/sps\/siot\/en-us\/products\/switches\/sealed-switches\/hm-series\/documents\/sps-siot-micro-switch-hm-hermetic-basic-product-sheet-003123-2-en-ciid-154705.pdf\" target=\"_blank\"\u003edatasheet\u003c\/a\u003e.\u003c\/p\u003e\n\n\u003cp\u003ePart Number: 38HM9\u003cbr\u003e\nManufacturer: HONEYWELL\u003cbr\u003e\nCountry of Origin: US\u003cbr\u003e\nUnit of Measure: EA\u003cbr\u003e\nECCN: EAR99\u003cbr\u003e\nPackage Type: PCS\u003c\/p\u003e\n\n\u003cp\u003e\u003cem\u003eDatasheet was not processed please search the internet for the part number for more details.\u003c\/em\u003e\u003c\/p\u003e\u003cbr\u003e","published_at":"2025-08-16T09:25:40+05:30","created_at":"2025-08-16T09:25:40+05:30","vendor":"Waldom Electonics","type":"Switches","tags":["1A","HWLL","IMPORT_CSV","IMPORT_PT2","Snap","SP","Switch","WLDM"],"price":23648891,"price_min":23648891,"price_max":23648891,"available":true,"price_varies":false,"compare_at_price":null,"compare_at_price_min":0,"compare_at_price_max":0,"compare_at_price_varies":false,"variants":[{"id":50627142877501,"title":"Default Title","option1":"Default Title","option2":null,"option3":null,"sku":"38HM9","requires_shipping":true,"taxable":true,"featured_image":null,"available":true,"name":"38HM9","public_title":null,"options":["Default Title"],"price":23648891,"weight":250,"compare_at_price":null,"inventory_management":"shopify","barcode":"38HM9","requires_selling_plan":false,"selling_plan_allocations":[]}],"images":["\/\/thinkrobotics.com\/cdn\/shop\/files\/11921309.jpg?v=1755316542"],"featured_image":"\/\/thinkrobotics.com\/cdn\/shop\/files\/11921309.jpg?v=1755316542","options":["Title"],"media":[{"alt":null,"id":45866458186045,"position":1,"preview_image":{"aspect_ratio":0.5,"height":600,"width":300,"src":"\/\/thinkrobotics.com\/cdn\/shop\/files\/11921309.jpg?v=1755316542"},"aspect_ratio":0.5,"height":600,"media_type":"image","src":"\/\/thinkrobotics.com\/cdn\/shop\/files\/11921309.jpg?v=1755316542","width":300}],"requires_selling_plan":false,"selling_plan_groups":[],"content":"\u003ch3\u003eHONEYWELL 38HM9 Basic\/Snap Action Switches (Part Number: 38HM9)\u003c\/h3\u003e\n\n\u003cp\u003eThe HONEYWELL 38HM9 is a hermetically sealed miniature snap-action switch designed for demanding environments, including military, aerospace, and industrial applications. Manufactured in the US, this switch offers reliable performance in extreme temperatures and harsh conditions, making it ideal for aerospace, military vehicles, marine environments, and deep space applications.\u003c\/p\u003e\n\n\u003ch3\u003eProduct Features\u003c\/h3\u003e\n\u003cul\u003e\n \u003cli\u003e\n\u003cstrong\u003eHermetically Sealed Construction:\u003c\/strong\u003e Symbol 5 hermetic seal with glass-to-metal and metal-to-metal sealing ensures protection against dust, water, particulate contaminants, and corrosive gases.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eHigh Temperature Range:\u003c\/strong\u003e Operates reliably from -184 °C to 260 °C [-300 °F to 500 °F], maintaining performance across a wide temperature spectrum.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eDurability:\u003c\/strong\u003e Mechanical endurance of at least 25,000 operations and electrical endurance of 25,000 operations.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eElectrical Ratings:\u003c\/strong\u003e Up to 4 A at 28 Vdc, with options for gold or silver contacts for low energy or power duty loads.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eVersatile Mounting:\u003c\/strong\u003e Available with wire leads or through-hole solder posts for flexible installation.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eCertifications:\u003c\/strong\u003e MIL-PRF-8805 qualified and UL 508 certified (select versions).\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eCompact Design:\u003c\/strong\u003e Miniature size suitable for space-constrained applications.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Housing made from 300 series stainless steel for corrosion resistance.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eContact Materials:\u003c\/strong\u003e Silver, gold, or bifurcated gold contacts for various control needs.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eAdditional Options:\u003c\/strong\u003e Auxiliary actuators such as straight leaf, roller leaf, straight lever, and roller lever to expand functionality.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003ctable\u003e\n \u003ctr\u003e\n \u003cth\u003eCharacteristic\u003c\/th\u003e\n \u003cth\u003eDetails\u003c\/th\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eDescription\u003c\/td\u003e\n \u003ctd\u003eHermetic sealed miniature snap-action switch\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eHousing Material\u003c\/td\u003e\n \u003ctd\u003e300 series stainless steel\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eMechanical Endurance\u003c\/td\u003e\n \u003ctd\u003e25,000 operations minimum\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eElectrical Endurance\u003c\/td\u003e\n \u003ctd\u003e25,000 operations minimum\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eDielectric Voltage\u003c\/td\u003e\n \u003ctd\u003e1000 Vrms for 1 minute\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eCircuitry\u003c\/td\u003e\n \u003ctd\u003eSPDT\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eContact Material\u003c\/td\u003e\n \u003ctd\u003eSilver, gold, or bifurcated gold\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eElectrical Rating\u003c\/td\u003e\n \u003ctd\u003eUp to 4 A at 28 Vdc\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eSealing\u003c\/td\u003e\n \u003ctd\u003eSymbol 5 hermetic sealed to MIL-PRF-8805\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eTemperature Range\u003c\/td\u003e\n \u003ctd\u003e-65 °C to 121 °C [-85 °F to 250 °F], optional -184 °C to 260 °C [-300 °F to 500 °F]\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eVibration\u003c\/td\u003e\n \u003ctd\u003eSymbol 2 (15 g), 10 to 2000 Hz\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eMechanical Shock\u003c\/td\u003e\n \u003ctd\u003eShock type M (100 G, sawtooth)\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003eApprovals\u003c\/td\u003e\n \u003ctd\u003eMIL-PRF-8805, UL 508 (File E66520)\u003c\/td\u003e\n \u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eApplications\u003c\/h3\u003e\n\u003cul\u003e\n \u003cli\u003eMilitary aircraft and helicopters: landing gear, engine fuel valves, external hatches\u003c\/li\u003e\n \u003cli\u003eCommercial aircraft: hatch detection, HVAC, oxygen valves, waste management\u003c\/li\u003e\n \u003cli\u003eSpacecraft: external hatch and door position, engine fuel sensing\u003c\/li\u003e\n \u003cli\u003ePower generation, oil, and gas: pressure, temperature, and flow switches\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eAdditional Information\u003c\/h3\u003e\n\u003cp\u003eFor detailed specifications and customization options, please refer to the \u003ca href=\"https:\/\/prod-edam.honeywell.com\/content\/dam\/honeywell-edam\/sps\/siot\/en-us\/products\/switches\/sealed-switches\/hm-series\/documents\/sps-siot-micro-switch-hm-hermetic-basic-product-sheet-003123-2-en-ciid-154705.pdf\" target=\"_blank\"\u003edatasheet\u003c\/a\u003e.\u003c\/p\u003e\n\n\u003cp\u003ePart Number: 38HM9\u003cbr\u003e\nManufacturer: HONEYWELL\u003cbr\u003e\nCountry of Origin: US\u003cbr\u003e\nUnit of Measure: EA\u003cbr\u003e\nECCN: EAR99\u003cbr\u003e\nPackage Type: PCS\u003c\/p\u003e\n\n\u003cp\u003e\u003cem\u003eDatasheet was not processed please search the internet for the part number for more details.\u003c\/em\u003e\u003c\/p\u003e\u003cbr\u003e"}
