Enhance your electronic projects with the reliable and durable DIP Switches from GRAYHILL. Designed for precision and long-term performance, these SPST (Single Pole Single Throw) switches feature 12 positions and come in tape seal packaging for secure handling and installation.
The GRAYHILL 78B12ST DIP Switch is a high-quality SPST (Single Pole Single Throw) switch with 12 positions, designed for applications requiring reliable switching and long operational life. It features a tape seal package for secure handling, suitable for machine soldering or heavy cleaning processes. The switch is compliant with RoHS standards and is ideal for various electronic control systems.
Technical Specifications
Mechanical Life: 2,000 operations per switch position
Contact Resistance: ≤ 30 mΩ initially; ≤ 100 mΩ after life at 10 mA, 50 mVdc
Insulation Resistance: Minimum 5,000 MΩ initially; 1,000 MΩ after life
Dielectric Strength: 750 V AC initially; 500 V AC after life
Current Carry Rating: 5 A maximum rise of 20°C
Operating Temperature Range: -40°C to +85°C
Storage Temperature Range: -55°C to +85°C
Materials: Brass, gold-plated shorting member; copper alloy contacts and terminals; thermoplastic non-conductive parts
Dimensions & Circuitry
1 O
2
For switches with 5, 6, 7, 8, or 10PST circuitry, contact Grayhill for details.
Ordering Information
Circuitry
No. of Positions
Length Inches
Length Metric
No./Tube
Raised Slides
Recessed Slides
SPST T
2-12
0.280" to 1.280"
7.1mm to 32.5mm
8 to 35
78B02T to 78B12T
78RB02T to 78RB12T
2PST
1-6
0.280" to 1.280"
7.1mm to 32.5mm
8 to 35
78F01T to 78F06T
Recessed slides not available
3PST
1-3
0.380" to 0.980"
9.7mm to 24.9mm
27 to 15
78G01T to 78G03T
4PST
1-2
0.480" to 0.880"
12.2mm to 22.4mm
21 to 12
78H01T to 78H02T
*A top tape seal is required for switches that are machine soldered or heavily cleaned after hand soldering. To order top seal versions, add "S" to the Grayhill part number.
Soldering & Environmental Ratings
Meets MIL-STD-202, Method 208 for solderability
Passes water/detergent immersion cleaning tests
Operating temperature: -40°C to +85°C
Storage temperature: -55°C to +85°C
Vibration and shock resistance per MIL-STD standards
Note
Datasheet was not processed please search the internet for the part number for more details.
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{"id":10026371645757,"title":"78B12ST","handle":"78b12st","description":"\u003ch3\u003eGRAYHILL DIP Switches (Part Number: 78B12ST)\u003c\/h3\u003e\n\u003cp\u003eEnhance your electronic projects with the reliable and durable DIP Switches from GRAYHILL. Designed for precision and long-term performance, these SPST (Single Pole Single Throw) switches feature 12 positions and come in tape seal packaging for secure handling and installation.\u003c\/p\u003e\n\n\u003ch3\u003eProduct Features\u003c\/h3\u003e\n\u003cul\u003e\n \u003cli\u003eManufacturer: \u003cstrong\u003eGRAYHILL\u003c\/strong\u003e\n\u003c\/li\u003e\n \u003cli\u003ePart Number: \u003cstrong\u003e78B12ST\u003c\/strong\u003e\n\u003c\/li\u003e\n \u003cli\u003eCountry of Origin: \u003cstrong\u003eCN\u003c\/strong\u003e\n\u003c\/li\u003e\n \u003cli\u003eUnit of Measure: \u003cstrong\u003eEA\u003c\/strong\u003e\n\u003c\/li\u003e\n \u003cli\u003eECCN: \u003cstrong\u003eEAR99\u003c\/strong\u003e\n\u003c\/li\u003e\n \u003cli\u003ePackage Type: \u003cstrong\u003eTUBE\u003c\/strong\u003e\n\u003c\/li\u003e\n \u003cli\u003eRoHS Compliant: \u003cstrong\u003eYes\u003c\/strong\u003e\n\u003c\/li\u003e\n \u003cli\u003eProduct Category: \u003cstrong\u003eSwitches | SIP Switches\u003c\/strong\u003e\n\u003c\/li\u003e\n \u003cli\u003eDatasheet: \u003ca href=\"https:\/\/4donline.ihs.com\/images\/VipMasterIC\/IC\/GRHL\/GRHLS01223\/GRHLS01223-1.pdf?hkey=82A29B72BDB3BD67C626B77C2F032848\" target=\"_blank\" rel=\"noopener noreferrer\"\u003eDownload Datasheet\u003c\/a\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe GRAYHILL 78B12ST DIP Switch is a high-quality SPST (Single Pole Single Throw) switch with 12 positions, designed for applications requiring reliable switching and long operational life. It features a tape seal package for secure handling, suitable for machine soldering or heavy cleaning processes. The switch is compliant with RoHS standards and is ideal for various electronic control systems.\u003c\/p\u003e\n\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003cul\u003e\n \u003cli\u003e\n\u003cstrong\u003eMechanical Life:\u003c\/strong\u003e 2,000 operations per switch position\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eMake-and-break Current Ratings:\u003c\/strong\u003e\n \u003cul\u003e\n \u003cli\u003e1 mA, 5 Vdc; 50 mA, 30 Vdc; 150 mA, 30 Vdc: 2,000 operations\u003c\/li\u003e\n \u003cli\u003e10 mA, 30 Vdc; 10 mA, 50 mVdc: 2,000 operations\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eContact Resistance:\u003c\/strong\u003e ≤ 30 mΩ initially; ≤ 100 mΩ after life at 10 mA, 50 mVdc\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eInsulation Resistance:\u003c\/strong\u003e Minimum 5,000 MΩ initially; 1,000 MΩ after life\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eDielectric Strength:\u003c\/strong\u003e 750 V AC initially; 500 V AC after life\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eCurrent Carry Rating:\u003c\/strong\u003e 5 A maximum rise of 20°C\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eOperating Temperature Range:\u003c\/strong\u003e -40°C to +85°C\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eStorage Temperature Range:\u003c\/strong\u003e -55°C to +85°C\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eMaterials:\u003c\/strong\u003e Brass, gold-plated shorting member; copper alloy contacts and terminals; thermoplastic non-conductive parts\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eDimensions \u0026amp; Circuitry\u003c\/h3\u003e\n\u003ctable\u003e\n \u003cthead\u003e\n \u003ctr\u003e\n \u003cth\u003e1 O\u003c\/th\u003e\n \u003cth\u003e2\u003c\/th\u003e\n \u003c\/tr\u003e\n \u003c\/thead\u003e\n \u003ctbody\u003e\n \u003ctr\u003e\n \u003ctd\u003e\u003c\/td\u003e\n \u003ctd\u003e\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003eFor switches with 5, 6, 7, 8, or 10PST circuitry, contact Grayhill for details.\u003c\/p\u003e\n\n\u003ch3\u003eOrdering Information\u003c\/h3\u003e\n\u003ctable\u003e\n \u003cthead\u003e\n \u003ctr\u003e\n \u003cth\u003eCircuitry\u003c\/th\u003e\n \u003cth\u003eNo. of Positions\u003c\/th\u003e\n \u003cth\u003eLength Inches\u003c\/th\u003e\n \u003cth\u003eLength Metric\u003c\/th\u003e\n \u003cth\u003eNo.\/Tube\u003c\/th\u003e\n \u003cth\u003eRaised Slides\u003c\/th\u003e\n \u003cth\u003eRecessed Slides\u003c\/th\u003e\n \u003c\/tr\u003e\n \u003c\/thead\u003e\n \u003ctbody\u003e\n \u003ctr\u003e\n \u003ctd\u003eSPST T\u003c\/td\u003e\n \u003ctd\u003e2-12\u003c\/td\u003e\n \u003ctd\u003e0.280\" to 1.280\"\u003c\/td\u003e\n \u003ctd\u003e7.1mm to 32.5mm\u003c\/td\u003e\n \u003ctd\u003e8 to 35\u003c\/td\u003e\n \u003ctd\u003e78B02T to 78B12T\u003c\/td\u003e\n \u003ctd\u003e78RB02T to 78RB12T\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003e2PST\u003c\/td\u003e\n \u003ctd\u003e1-6\u003c\/td\u003e\n \u003ctd\u003e0.280\" to 1.280\"\u003c\/td\u003e\n \u003ctd\u003e7.1mm to 32.5mm\u003c\/td\u003e\n \u003ctd\u003e8 to 35\u003c\/td\u003e\n \u003ctd\u003e78F01T to 78F06T\u003c\/td\u003e\n \u003ctd\u003eRecessed slides not available\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003e3PST\u003c\/td\u003e\n \u003ctd\u003e1-3\u003c\/td\u003e\n \u003ctd\u003e0.380\" to 0.980\"\u003c\/td\u003e\n \u003ctd\u003e9.7mm to 24.9mm\u003c\/td\u003e\n \u003ctd\u003e27 to 15\u003c\/td\u003e\n \u003ctd\u003e78G01T to 78G03T\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003e4PST\u003c\/td\u003e\n \u003ctd\u003e1-2\u003c\/td\u003e\n \u003ctd\u003e0.480\" to 0.880\"\u003c\/td\u003e\n \u003ctd\u003e12.2mm to 22.4mm\u003c\/td\u003e\n \u003ctd\u003e21 to 12\u003c\/td\u003e\n \u003ctd\u003e78H01T to 78H02T\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e*A top tape seal is required for switches that are machine soldered or heavily cleaned after hand soldering. To order top seal versions, add \"S\" to the Grayhill part number.\u003c\/p\u003e\n\n\u003ch3\u003eSoldering \u0026amp; Environmental Ratings\u003c\/h3\u003e\n\u003cul\u003e\n \u003cli\u003eMeets MIL-STD-202, Method 208 for solderability\u003c\/li\u003e\n \u003cli\u003ePasses water\/detergent immersion cleaning tests\u003c\/li\u003e\n \u003cli\u003eOperating temperature: -40°C to +85°C\u003c\/li\u003e\n \u003cli\u003eStorage temperature: -55°C to +85°C\u003c\/li\u003e\n \u003cli\u003eVibration and shock resistance per MIL-STD standards\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eNote\u003c\/h3\u003e\n\u003cp\u003eDatasheet was not processed please search the internet for the part number for more details.\u003c\/p\u003e","published_at":"2025-08-15T07:07:52+05:30","created_at":"2025-08-15T07:07:55+05:30","vendor":"Waldom Electonics","type":"Switches","tags":["DIP","GRAYH","IMPORT_CSV","IMPORT_PT2","Sip","Switch","WLDM"],"price":57100,"price_min":57100,"price_max":57100,"available":false,"price_varies":false,"compare_at_price":null,"compare_at_price_min":0,"compare_at_price_max":0,"compare_at_price_varies":false,"variants":[{"id":50622160666941,"title":"Default Title","option1":"Default Title","option2":null,"option3":null,"sku":"78B12ST","requires_shipping":true,"taxable":true,"featured_image":null,"available":false,"name":"78B12ST","public_title":null,"options":["Default Title"],"price":57100,"weight":250,"compare_at_price":null,"inventory_management":"shopify","barcode":"78B12ST","requires_selling_plan":false,"selling_plan_allocations":[]}],"images":["\/\/thinkrobotics.com\/cdn\/shop\/files\/78B12ST_DIP_ThruHole_78B_Raised_20Slide_d38afa13.jpg?v=1755221875"],"featured_image":"\/\/thinkrobotics.com\/cdn\/shop\/files\/78B12ST_DIP_ThruHole_78B_Raised_20Slide_d38afa13.jpg?v=1755221875","options":["Title"],"media":[{"alt":null,"id":45847449502013,"position":1,"preview_image":{"aspect_ratio":1.0,"height":200,"width":200,"src":"\/\/thinkrobotics.com\/cdn\/shop\/files\/78B12ST_DIP_ThruHole_78B_Raised_20Slide_d38afa13.jpg?v=1755221875"},"aspect_ratio":1.0,"height":200,"media_type":"image","src":"\/\/thinkrobotics.com\/cdn\/shop\/files\/78B12ST_DIP_ThruHole_78B_Raised_20Slide_d38afa13.jpg?v=1755221875","width":200}],"requires_selling_plan":false,"selling_plan_groups":[],"content":"\u003ch3\u003eGRAYHILL DIP Switches (Part Number: 78B12ST)\u003c\/h3\u003e\n\u003cp\u003eEnhance your electronic projects with the reliable and durable DIP Switches from GRAYHILL. Designed for precision and long-term performance, these SPST (Single Pole Single Throw) switches feature 12 positions and come in tape seal packaging for secure handling and installation.\u003c\/p\u003e\n\n\u003ch3\u003eProduct Features\u003c\/h3\u003e\n\u003cul\u003e\n \u003cli\u003eManufacturer: \u003cstrong\u003eGRAYHILL\u003c\/strong\u003e\n\u003c\/li\u003e\n \u003cli\u003ePart Number: \u003cstrong\u003e78B12ST\u003c\/strong\u003e\n\u003c\/li\u003e\n \u003cli\u003eCountry of Origin: \u003cstrong\u003eCN\u003c\/strong\u003e\n\u003c\/li\u003e\n \u003cli\u003eUnit of Measure: \u003cstrong\u003eEA\u003c\/strong\u003e\n\u003c\/li\u003e\n \u003cli\u003eECCN: \u003cstrong\u003eEAR99\u003c\/strong\u003e\n\u003c\/li\u003e\n \u003cli\u003ePackage Type: \u003cstrong\u003eTUBE\u003c\/strong\u003e\n\u003c\/li\u003e\n \u003cli\u003eRoHS Compliant: \u003cstrong\u003eYes\u003c\/strong\u003e\n\u003c\/li\u003e\n \u003cli\u003eProduct Category: \u003cstrong\u003eSwitches | SIP Switches\u003c\/strong\u003e\n\u003c\/li\u003e\n \u003cli\u003eDatasheet: \u003ca href=\"https:\/\/4donline.ihs.com\/images\/VipMasterIC\/IC\/GRHL\/GRHLS01223\/GRHLS01223-1.pdf?hkey=82A29B72BDB3BD67C626B77C2F032848\" target=\"_blank\" rel=\"noopener noreferrer\"\u003eDownload Datasheet\u003c\/a\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe GRAYHILL 78B12ST DIP Switch is a high-quality SPST (Single Pole Single Throw) switch with 12 positions, designed for applications requiring reliable switching and long operational life. It features a tape seal package for secure handling, suitable for machine soldering or heavy cleaning processes. The switch is compliant with RoHS standards and is ideal for various electronic control systems.\u003c\/p\u003e\n\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003cul\u003e\n \u003cli\u003e\n\u003cstrong\u003eMechanical Life:\u003c\/strong\u003e 2,000 operations per switch position\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eMake-and-break Current Ratings:\u003c\/strong\u003e\n \u003cul\u003e\n \u003cli\u003e1 mA, 5 Vdc; 50 mA, 30 Vdc; 150 mA, 30 Vdc: 2,000 operations\u003c\/li\u003e\n \u003cli\u003e10 mA, 30 Vdc; 10 mA, 50 mVdc: 2,000 operations\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eContact Resistance:\u003c\/strong\u003e ≤ 30 mΩ initially; ≤ 100 mΩ after life at 10 mA, 50 mVdc\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eInsulation Resistance:\u003c\/strong\u003e Minimum 5,000 MΩ initially; 1,000 MΩ after life\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eDielectric Strength:\u003c\/strong\u003e 750 V AC initially; 500 V AC after life\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eCurrent Carry Rating:\u003c\/strong\u003e 5 A maximum rise of 20°C\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eOperating Temperature Range:\u003c\/strong\u003e -40°C to +85°C\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eStorage Temperature Range:\u003c\/strong\u003e -55°C to +85°C\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eMaterials:\u003c\/strong\u003e Brass, gold-plated shorting member; copper alloy contacts and terminals; thermoplastic non-conductive parts\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eDimensions \u0026amp; Circuitry\u003c\/h3\u003e\n\u003ctable\u003e\n \u003cthead\u003e\n \u003ctr\u003e\n \u003cth\u003e1 O\u003c\/th\u003e\n \u003cth\u003e2\u003c\/th\u003e\n \u003c\/tr\u003e\n \u003c\/thead\u003e\n \u003ctbody\u003e\n \u003ctr\u003e\n \u003ctd\u003e\u003c\/td\u003e\n \u003ctd\u003e\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003eFor switches with 5, 6, 7, 8, or 10PST circuitry, contact Grayhill for details.\u003c\/p\u003e\n\n\u003ch3\u003eOrdering Information\u003c\/h3\u003e\n\u003ctable\u003e\n \u003cthead\u003e\n \u003ctr\u003e\n \u003cth\u003eCircuitry\u003c\/th\u003e\n \u003cth\u003eNo. of Positions\u003c\/th\u003e\n \u003cth\u003eLength Inches\u003c\/th\u003e\n \u003cth\u003eLength Metric\u003c\/th\u003e\n \u003cth\u003eNo.\/Tube\u003c\/th\u003e\n \u003cth\u003eRaised Slides\u003c\/th\u003e\n \u003cth\u003eRecessed Slides\u003c\/th\u003e\n \u003c\/tr\u003e\n \u003c\/thead\u003e\n \u003ctbody\u003e\n \u003ctr\u003e\n \u003ctd\u003eSPST T\u003c\/td\u003e\n \u003ctd\u003e2-12\u003c\/td\u003e\n \u003ctd\u003e0.280\" to 1.280\"\u003c\/td\u003e\n \u003ctd\u003e7.1mm to 32.5mm\u003c\/td\u003e\n \u003ctd\u003e8 to 35\u003c\/td\u003e\n \u003ctd\u003e78B02T to 78B12T\u003c\/td\u003e\n \u003ctd\u003e78RB02T to 78RB12T\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003e2PST\u003c\/td\u003e\n \u003ctd\u003e1-6\u003c\/td\u003e\n \u003ctd\u003e0.280\" to 1.280\"\u003c\/td\u003e\n \u003ctd\u003e7.1mm to 32.5mm\u003c\/td\u003e\n \u003ctd\u003e8 to 35\u003c\/td\u003e\n \u003ctd\u003e78F01T to 78F06T\u003c\/td\u003e\n \u003ctd\u003eRecessed slides not available\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003e3PST\u003c\/td\u003e\n \u003ctd\u003e1-3\u003c\/td\u003e\n \u003ctd\u003e0.380\" to 0.980\"\u003c\/td\u003e\n \u003ctd\u003e9.7mm to 24.9mm\u003c\/td\u003e\n \u003ctd\u003e27 to 15\u003c\/td\u003e\n \u003ctd\u003e78G01T to 78G03T\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003ctd\u003e4PST\u003c\/td\u003e\n \u003ctd\u003e1-2\u003c\/td\u003e\n \u003ctd\u003e0.480\" to 0.880\"\u003c\/td\u003e\n \u003ctd\u003e12.2mm to 22.4mm\u003c\/td\u003e\n \u003ctd\u003e21 to 12\u003c\/td\u003e\n \u003ctd\u003e78H01T to 78H02T\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e*A top tape seal is required for switches that are machine soldered or heavily cleaned after hand soldering. To order top seal versions, add \"S\" to the Grayhill part number.\u003c\/p\u003e\n\n\u003ch3\u003eSoldering \u0026amp; Environmental Ratings\u003c\/h3\u003e\n\u003cul\u003e\n \u003cli\u003eMeets MIL-STD-202, Method 208 for solderability\u003c\/li\u003e\n \u003cli\u003ePasses water\/detergent immersion cleaning tests\u003c\/li\u003e\n \u003cli\u003eOperating temperature: -40°C to +85°C\u003c\/li\u003e\n \u003cli\u003eStorage temperature: -55°C to +85°C\u003c\/li\u003e\n \u003cli\u003eVibration and shock resistance per MIL-STD standards\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eNote\u003c\/h3\u003e\n\u003cp\u003eDatasheet was not processed please search the internet for the part number for more details.\u003c\/p\u003e"}
