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MHS122K Equivalent & Substitute Parts
Part Overview
The MHS122K is a slide switch manufactured by APEM Inc., featuring SPDT (Single Pole Double Throw) configuration with 300mA current rating and 30V DC voltage rating. This component is classified as obsolete, necessitating identification of functionally equivalent alternatives for ongoing design support and procurement continuity. The switch employs through-hole mounting with PC pin termination and is sealed with epoxy for environmental protection.
Substiute Parts
Key Parameters
| Parameter | MHS122K Value |
|---|---|
| Manufacturer | APEM Inc. |
| Circuit Configuration | SPDT |
| Current Rating | 300mA (DC) |
| Voltage Rating - DC | 30V |
| Switch Function | On-On |
| Actuator Type | Baton |
| Mounting Type | Through Hole |
| Termination Style | PC Pin |
| Operating Temperature Range | -20°C to 85°C |
| Electrical Life | 10,000 Cycles |
| RoHS Status | ROHS3 Compliant |
| Product Status | Obsolete |
Substitute Part Grouping Explanation
Substitution eligibility for the MHS122K is determined by the following critical parameters:
- Circuit Configuration: Must be SPDT to maintain switching logic compatibility
- Current Rating: Minimum 300mA to support existing load requirements
- DC Voltage Rating: Minimum 30V to ensure safe operation in DC applications
- Mounting Type: Must be through-hole to match PCB design
- Termination Style: Must be PC pin for direct connection compatibility
- Operating Temperature Range: Must encompass -20°C to 85°C or broader
- Electrical Life: Minimum 10,000 cycles for equivalent reliability
- RoHS Compliance: ROHS3 compliance required for regulatory alignment
The SLB12814 meets all substitution criteria, offering equivalent electrical performance with enhanced voltage rating flexibility and maintained mechanical specifications.
Parameter Comparison
| Parameter | MHS122K | SLB12814 |
|---|---|---|
| Manufacturer | APEM Inc. | APEM Inc. |
| Circuit Configuration | SPDT | SPDT |
| Current Rating | 300mA (DC) | 300mA (AC/DC) |
| Voltage Rating - DC | 30V | 30V |
| Voltage Rating - AC | Not Specified | 125V |
| Switch Function | On-On | On-On |
| Mounting Type | Through Hole | Through Hole |
| Termination Style | PC Pin | PC Pin |
| Contact Finish | Silver | Silver |
| Features | Epoxy Sealed Terminals | Epoxy Sealed Terminals |
| Operating Temperature Range | -20°C to 85°C | -20°C to 85°C |
| Electrical Life | 10,000 Cycles | 10,000 Cycles |
| RoHS Status | ROHS3 Compliant | ROHS3 Compliant |
| Product Status | Obsolete | Obsolete |
Engineering Selection Recommendations
The SLB12814 is a direct functional equivalent for the MHS122K in DC applications operating at 30V and 300mA. Both components maintain identical electrical life specifications, operating temperature ranges, and RoHS3 compliance status. The SLB12814 provides additional AC voltage rating capability (125V AC) without compromising DC performance, offering design flexibility for future applications.
Both components are manufactured by APEM Inc. and share identical termination and mounting characteristics, ensuring mechanical compatibility with existing PCB layouts. The epoxy-sealed terminal design is preserved across both parts, maintaining environmental protection standards.
Frequently Asked Questions (FAQ)
Q: Can the SLB12814 directly replace the MHS122K in existing designs?
A: Yes. Both components share identical SPDT circuit configuration, 300mA current rating, 30V DC voltage rating, through-hole mounting, PC pin termination, and operating temperature range. Mechanical compatibility is maintained.
Q: What is the primary difference between these two parts?
A: The SLB12814 includes AC voltage rating capability (125V AC) in addition to the 30V DC rating. The MHS122K is specified for DC operation only. Both maintain equivalent DC performance.
Q: Are there packaging differences between MHS122K and SLB12814?
A: The MHS122K is supplied in standard packaging, while the SLB12814 is supplied in bulk packaging. This affects procurement quantities but does not impact electrical or mechanical performance.
Q: Do both parts meet current regulatory requirements?
A: Yes. Both the MHS122K and SLB12814 are ROHS3 compliant and REACH unaffected, meeting current regulatory standards for electronic component manufacturing and use.
Q: What is the actuator length difference, and does it affect substitution?
A: The MHS122K features a 10.00mm baton actuator, while the SLB12814 features a 4.00mm standard actuator. Actuator length and type may affect user interface ergonomics and panel cutout requirements. Verify mechanical fit within your application before implementation.
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