MSSA22G Equivalent & Substitute Parts

Part Overview

The MSSA22G is a slide switch manufactured by APEM Inc., configured as a Double Pole Double Throw (DPDT) switch with a rated capacity of 0.4VA at 20V. This component is designed for through-hole mounting applications and features epoxy sealed terminals with gold-plated contacts. The product is currently classified as obsolete, making identification of functionally equivalent alternatives necessary for ongoing system support and component procurement.

Substiute Parts

MSSA22G

APEM Inc.In Stock: 1046MSSA22G Datasheet

Current PartRFQ

SSB22

TE Connectivity ALCOSWITCH SwitchesIn Stock: 1568SSB22 Datasheet

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Key Parameters

Substitute Part Grouping Explanation

The SSB22 manufactured by TE Connectivity ALCOSWITCH Switches qualifies as a functional substitute for the MSSA22G based on the following critical parameters:

Matching Parameters:

• Circuit configuration: Both are DPDT switches
• Switch function: Both are On-On configuration
• Mounting type: Both are through-hole mounted
• Termination style: Both use PC Pin termination
• Actuator type: Both feature standard actuators
• Operating force: Both require 250gf
• RoHS compliance: Both are ROHS3 compliant
• ECCN classification: Both are EAR99

Substitution Validity: The SSB22 exceeds the electrical specifications of the MSSA22G. With a 100mA DC rating at 30V, the SSB22 provides higher current and voltage capacity than the 0.4VA at 20V requirement of the MSSA22G. The SSB22 is actively manufactured and available in production quantities, addressing the obsolescence status of the MSSA22G.

Parameter Comparison

Engineering Selection Recommendations

The SSB22 is suitable as a direct substitute for the MSSA22G in applications where the following conditions are met:

1. Electrical Requirements: The application operates at or below 30V DC and draws 100mA or less. The MSSA22G specification of 0.4VA at 20V is fully contained within the SSB22 operating envelope.

2. Mechanical Fit: The SSB22 actuator length of 4.60mm exceeds the MSSA22G actuator length of 2.00mm by 1.50mm. PCB layout and enclosure clearance must accommodate this dimensional difference.

3. Contact Material Compatibility: The SSB22 uses silver-plated contacts versus the gold-plated contacts of the MSSA22G. For applications requiring specific contact material properties, this difference must be evaluated against circuit requirements.

4. Temperature Operating Range: The SSB22 operates across -20°C to 85°C, which encompasses the MSSA22G range of -10°C to 60°C. Applications operating outside the MSSA22G range benefit from the extended SSB22 specification.

5. Compliance Status: Both components are ROHS3 compliant and classified as EAR99 for export control purposes. No compliance barriers exist for substitution.

6. Availability: The SSB22 is actively manufactured and available in production quantities (1526 pieces in stock), whereas the MSSA22G is obsolete.

Frequently Asked Questions (FAQ)

Q: Can the SSB22 directly replace the MSSA22G without circuit modification?

A: The SSB22 is electrically compatible with the MSSA22G for applications operating within the MSSA22G electrical specifications (0.4VA at 20V). No circuit modification is required. Physical layout changes may be necessary due to the 1.50mm difference in actuator length.

Q: What is the significance of the different contact finishes (gold vs. silver)?

A: Contact finish affects corrosion resistance and contact resistance characteristics. Gold provides superior corrosion resistance in low-current applications. Silver offers lower contact resistance but is more susceptible to oxidation. For the specified 0.4VA application, both materials are functionally acceptable. Applications involving low-level signal switching or high-reliability requirements should evaluate contact material compatibility.

Q: Does the longer actuator length of the SSB22 affect functionality?

A: The actuator length difference does not affect electrical function. The SSB22 actuator length of 4.60mm versus the MSSA22G length of 2.00mm may require PCB layout adjustment and enclosure clearance verification. Mechanical engagement and tactile feedback characteristics may differ slightly.

Q: Are there any temperature-related limitations when substituting the SSB22?

A: The SSB22 operates across a wider temperature range (-20°C to 85°C) compared to the MSSA22G (-10°C to 60°C). Applications operating within the MSSA22G temperature range experience no limitations. Applications requiring operation below -10°C or above 60°C benefit from the SSB22 extended specification.

Q: What packaging considerations apply to the SSB22?

A: The SSB22 is supplied in bulk packaging, whereas the MSSA22G packaging specification is not provided. Bulk packaging is standard for through-hole components and does not affect component functionality or performance.

Q: Is the SSB22 suitable for high-reliability applications?

A: The SSB22 is actively manufactured and ROHS3 compliant. Mechanical life is specified at 10,000 cycles. For applications requiring specific reliability metrics or qualification documentation, manufacturer datasheets and application notes should be consulted.