Enhance your electronic applications with the high-quality Grayhill 38BM-0-H-3-S pushbutton switch, designed for reliable performance in surface mount configurations. This sub-miniature switch features sealed construction and is suitable for various industrial and commercial uses requiring momentary contact operation.
Product Features
Surface mount process compatible for streamlined assembly
Sealed construction for durability and protection against environmental factors
SPST (Single Pole Single Throw) and SPDT options available, with momentary contact operation
Extended or flush plunger options to suit application needs
Drop-in replacement for industry-standard switch specifications
Technical Specifications
Part Number: 38BM-0-H-3-S
Manufacturer: Grayhill
Country of Origin: China (COO: CN)
Product Type: Switches | Pushbutton Switches
Package Type: Black (BLK)
Unit of Measure: Each (EA)
ECCN: EAR99
RoHS Compliant: Yes
Electrical & Mechanical Details
Rating Criteria
Operating Life: 80,000 make-and-break cycles at full load
Contact Resistance: Below 20 milliohms initially at 2-4 Vdc, 100 mA
Contact Rating (resistive load): Gold contacts – 0.4 VA max at 20 Vac or Vdc max; Silver contacts – 1.0 A max at 120 Vac or 28 Vdc
Insulation Resistance: 1000 megaohms minimum
Voltage Breakdown: 1000 Vrms minimum at sea level
Operating Temperature: -30°C to +85°C
Solderability: Compliant with MIL-STD-202F, Method 208D or EIA RS-186E Method 9 (1 hour steam aging)
Materials & Finishes
Base and Cover: Thermoplastic (UL 94V-0)
Plunger: Thermoplastic (UL 94V-0) with internal O-ring seal
Terminals: Copper alloy, gold plated over nickel plate
Spring: Plated music wire
Contact System: Copper alloy, gold or silver plated over nickel plate
Switch Support: Brass, tin-plated
Dimensions
Dimension (in inches)
Dimension (mm)
.125 (3.18)
3.18
.162 (4.11)
4.11
Additional Information
For detailed specifications and technical data, please refer to the datasheet.
Note: The datasheet was not processed; please search the internet for the part number for more details.
{"id":10023336247613,"title":"38BM-0-H-3-S","handle":"38bm-0-h-3-s","description":"\u003ch3\u003eGRAYHILL Switch Push SPST-NO 0.4VA 20V (Part Number: 38BM-0-H-3-S)\u003c\/h3\u003e\n\n\u003cp\u003eEnhance your electronic applications with the high-quality Grayhill 38BM-0-H-3-S pushbutton switch, designed for reliable performance in surface mount configurations. This sub-miniature switch features sealed construction and is suitable for various industrial and commercial uses requiring momentary contact operation.\u003c\/p\u003e\n\n\u003ch3\u003eProduct Features\u003c\/h3\u003e\n\u003cul\u003e\n \u003cli\u003eSurface mount process compatible for streamlined assembly\u003c\/li\u003e\n \u003cli\u003eSealed construction for durability and protection against environmental factors\u003c\/li\u003e\n \u003cli\u003eSPST (Single Pole Single Throw) and SPDT options available, with momentary contact operation\u003c\/li\u003e\n \u003cli\u003eExtended or flush plunger options to suit application needs\u003c\/li\u003e\n \u003cli\u003eDrop-in replacement for industry-standard switch specifications\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003cul\u003e\n \u003cli\u003ePart Number: 38BM-0-H-3-S\u003c\/li\u003e\n \u003cli\u003eManufacturer: Grayhill\u003c\/li\u003e\n \u003cli\u003eCountry of Origin: China (COO: CN)\u003c\/li\u003e\n \u003cli\u003eProduct Type: Switches | Pushbutton Switches\u003c\/li\u003e\n \u003cli\u003ePackage Type: Black (BLK)\u003c\/li\u003e\n \u003cli\u003eUnit of Measure: Each (EA)\u003c\/li\u003e\n \u003cli\u003eECCN: EAR99\u003c\/li\u003e\n \u003cli\u003eRoHS Compliant: Yes\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eElectrical \u0026amp; Mechanical Details\u003c\/h3\u003e\n\u003ctable\u003e\n \u003ctr\u003e\n \u003cth\u003eRating Criteria\u003c\/th\u003e\n \u003ctd\u003e\n \u003cul\u003e\n \u003cli\u003eOperating Life: 80,000 make-and-break cycles at full load\u003c\/li\u003e\n \u003cli\u003eContact Resistance: Below 20 milliohms initially at 2-4 Vdc, 100 mA\u003c\/li\u003e\n \u003cli\u003eContact Rating (resistive load): Gold contacts – 0.4 VA max at 20 Vac or Vdc max; Silver contacts – 1.0 A max at 120 Vac or 28 Vdc\u003c\/li\u003e\n \u003cli\u003eInsulation Resistance: 1000 megaohms minimum\u003c\/li\u003e\n \u003cli\u003eVoltage Breakdown: 1000 Vrms minimum at sea level\u003c\/li\u003e\n \u003cli\u003eOperating Temperature: -30°C to +85°C\u003c\/li\u003e\n \u003cli\u003eSolderability: Compliant with MIL-STD-202F, Method 208D or EIA RS-186E Method 9 (1 hour steam aging)\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003c\/td\u003e\n \u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eMaterials \u0026amp; Finishes\u003c\/h3\u003e\n\u003cul\u003e\n \u003cli\u003eBase and Cover: Thermoplastic (UL 94V-0)\u003c\/li\u003e\n \u003cli\u003ePlunger: Thermoplastic (UL 94V-0) with internal O-ring seal\u003c\/li\u003e\n \u003cli\u003eTerminals: Copper alloy, gold plated over nickel plate\u003c\/li\u003e\n \u003cli\u003eSpring: Plated music wire\u003c\/li\u003e\n \u003cli\u003eContact System: Copper alloy, gold or silver plated over nickel plate\u003c\/li\u003e\n \u003cli\u003eSwitch Support: Brass, tin-plated\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eDimensions\u003c\/h3\u003e\n\u003ctable\u003e\n \u003ctr\u003e\n \u003cth\u003eDimension (in inches)\u003c\/th\u003e\n \u003cth\u003eDimension (mm)\u003c\/th\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003e.125 (3.18)\u003c\/td\u003e\n \u003ctd\u003e3.18\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003e.162 (4.11)\u003c\/td\u003e\n \u003ctd\u003e4.11\u003c\/td\u003e\n \u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eAdditional Information\u003c\/h3\u003e\n\u003cp\u003eFor detailed specifications and technical data, please refer to the \u003ca href=\"https:\/\/www.waldomapac.com\/upload\/parts\/datasheets\/mf-gh\/gh-38bm-0-h-3-s.pdf\" target=\"_blank\"\u003edatasheet\u003c\/a\u003e.\u003c\/p\u003e\n\n\u003cp\u003eNote: The datasheet was not processed; please search the internet for the part number for more details.\u003c\/p\u003e\u003cbr\u003e","published_at":"2025-08-13T22:18:45+05:30","created_at":"2025-08-13T22:18:45+05:30","vendor":"Waldom Electonics","type":"Switches","tags":["20V","4VA","GRAYH","IMPORT_CSV","PUSH","Pushbutton","Switch","WLDM"],"price":151203,"price_min":151203,"price_max":151203,"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":50616342643005,"title":"Default Title","option1":"Default Title","option2":null,"option3":null,"sku":"38BM-0-H-3-S","requires_shipping":true,"taxable":true,"featured_image":null,"available":true,"name":"38BM-0-H-3-S","public_title":null,"options":["Default Title"],"price":151203,"weight":250,"compare_at_price":null,"inventory_management":"shopify","barcode":"38BM-0-H-3-S","requires_selling_plan":false,"selling_plan_allocations":[]}],"images":["\/\/thinkrobotics.com\/cdn\/shop\/files\/38BM-0-H-3-S_Series_2038BM_BC_05fc683a.jpg?v=1755103728"],"featured_image":"\/\/thinkrobotics.com\/cdn\/shop\/files\/38BM-0-H-3-S_Series_2038BM_BC_05fc683a.jpg?v=1755103728","options":["Title"],"media":[{"alt":null,"id":45822437949757,"position":1,"preview_image":{"aspect_ratio":1.0,"height":200,"width":200,"src":"\/\/thinkrobotics.com\/cdn\/shop\/files\/38BM-0-H-3-S_Series_2038BM_BC_05fc683a.jpg?v=1755103728"},"aspect_ratio":1.0,"height":200,"media_type":"image","src":"\/\/thinkrobotics.com\/cdn\/shop\/files\/38BM-0-H-3-S_Series_2038BM_BC_05fc683a.jpg?v=1755103728","width":200}],"requires_selling_plan":false,"selling_plan_groups":[],"content":"\u003ch3\u003eGRAYHILL Switch Push SPST-NO 0.4VA 20V (Part Number: 38BM-0-H-3-S)\u003c\/h3\u003e\n\n\u003cp\u003eEnhance your electronic applications with the high-quality Grayhill 38BM-0-H-3-S pushbutton switch, designed for reliable performance in surface mount configurations. This sub-miniature switch features sealed construction and is suitable for various industrial and commercial uses requiring momentary contact operation.\u003c\/p\u003e\n\n\u003ch3\u003eProduct Features\u003c\/h3\u003e\n\u003cul\u003e\n \u003cli\u003eSurface mount process compatible for streamlined assembly\u003c\/li\u003e\n \u003cli\u003eSealed construction for durability and protection against environmental factors\u003c\/li\u003e\n \u003cli\u003eSPST (Single Pole Single Throw) and SPDT options available, with momentary contact operation\u003c\/li\u003e\n \u003cli\u003eExtended or flush plunger options to suit application needs\u003c\/li\u003e\n \u003cli\u003eDrop-in replacement for industry-standard switch specifications\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003cul\u003e\n \u003cli\u003ePart Number: 38BM-0-H-3-S\u003c\/li\u003e\n \u003cli\u003eManufacturer: Grayhill\u003c\/li\u003e\n \u003cli\u003eCountry of Origin: China (COO: CN)\u003c\/li\u003e\n \u003cli\u003eProduct Type: Switches | Pushbutton Switches\u003c\/li\u003e\n \u003cli\u003ePackage Type: Black (BLK)\u003c\/li\u003e\n \u003cli\u003eUnit of Measure: Each (EA)\u003c\/li\u003e\n \u003cli\u003eECCN: EAR99\u003c\/li\u003e\n \u003cli\u003eRoHS Compliant: Yes\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eElectrical \u0026amp; Mechanical Details\u003c\/h3\u003e\n\u003ctable\u003e\n \u003ctr\u003e\n \u003cth\u003eRating Criteria\u003c\/th\u003e\n \u003ctd\u003e\n \u003cul\u003e\n \u003cli\u003eOperating Life: 80,000 make-and-break cycles at full load\u003c\/li\u003e\n \u003cli\u003eContact Resistance: Below 20 milliohms initially at 2-4 Vdc, 100 mA\u003c\/li\u003e\n \u003cli\u003eContact Rating (resistive load): Gold contacts – 0.4 VA max at 20 Vac or Vdc max; Silver contacts – 1.0 A max at 120 Vac or 28 Vdc\u003c\/li\u003e\n \u003cli\u003eInsulation Resistance: 1000 megaohms minimum\u003c\/li\u003e\n \u003cli\u003eVoltage Breakdown: 1000 Vrms minimum at sea level\u003c\/li\u003e\n \u003cli\u003eOperating Temperature: -30°C to +85°C\u003c\/li\u003e\n \u003cli\u003eSolderability: Compliant with MIL-STD-202F, Method 208D or EIA RS-186E Method 9 (1 hour steam aging)\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003c\/td\u003e\n \u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eMaterials \u0026amp; Finishes\u003c\/h3\u003e\n\u003cul\u003e\n \u003cli\u003eBase and Cover: Thermoplastic (UL 94V-0)\u003c\/li\u003e\n \u003cli\u003ePlunger: Thermoplastic (UL 94V-0) with internal O-ring seal\u003c\/li\u003e\n \u003cli\u003eTerminals: Copper alloy, gold plated over nickel plate\u003c\/li\u003e\n \u003cli\u003eSpring: Plated music wire\u003c\/li\u003e\n \u003cli\u003eContact System: Copper alloy, gold or silver plated over nickel plate\u003c\/li\u003e\n \u003cli\u003eSwitch Support: Brass, tin-plated\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eDimensions\u003c\/h3\u003e\n\u003ctable\u003e\n \u003ctr\u003e\n \u003cth\u003eDimension (in inches)\u003c\/th\u003e\n \u003cth\u003eDimension (mm)\u003c\/th\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003e.125 (3.18)\u003c\/td\u003e\n \u003ctd\u003e3.18\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003e.162 (4.11)\u003c\/td\u003e\n \u003ctd\u003e4.11\u003c\/td\u003e\n \u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eAdditional Information\u003c\/h3\u003e\n\u003cp\u003eFor detailed specifications and technical data, please refer to the \u003ca href=\"https:\/\/www.waldomapac.com\/upload\/parts\/datasheets\/mf-gh\/gh-38bm-0-h-3-s.pdf\" target=\"_blank\"\u003edatasheet\u003c\/a\u003e.\u003c\/p\u003e\n\n\u003cp\u003eNote: The datasheet was not processed; please search the internet for the part number for more details.\u003c\/p\u003e\u003cbr\u003e"}
