MSS12AG Equivalent & Substitute Parts

Part Overview

The MSS12AG is a slide switch manufactured by APEM Inc., configured as a Single Pole Double Throw (SPDT) switch with gold-plated contacts. This through-hole component operates at 0.4VA across 20V AC/DC ratings and features a 5.00mm actuator with 2.00mm switch travel. The MSS12AG is classified as obsolete, making identification of equivalent substitute parts essential for ongoing design support and component procurement.

Substiute Parts

MSS12AG

APEM Inc.In Stock: 958MSS12AG Datasheet

Current PartRFQ

1825257-2

TE Connectivity ALCOSWITCH SwitchesIn Stock: 21721825257-2 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the MSS12AG is determined by strict equivalence across electrical and mechanical parameters. The substitute part 1825257-2 (TE Connectivity ALCOSWITCH Switches) qualifies as a direct equivalent based on the following criteria:

Electrical Equivalence:

• Identical circuit configuration (SPDT)
• Matching current rating (0.4VA AC/DC)
• Identical voltage ratings (20V AC and 20V DC)
• Gold contact finish for signal integrity

Mechanical Equivalence:

• Matching actuator length (5.00mm)
• Identical switch travel distance (2.00mm)
• Through-hole mounting with PC pin termination
• On-On switch function

Compliance Equivalence:

• Both parts maintain ROHS3 compliance
• Both classified under identical HTSUS code (8536.50.9050)
• Both assigned EAR99 ECCN classification

The substitute part 1825257-2 exceeds the minimum performance requirements of the obsolete MSS12AG across mechanical life (15,000 cycles versus unspecified) and electrical life (15,000 cycles versus 10,000 cycles), while maintaining full backward compatibility with existing circuit designs.

Parameter Comparison

Engineering Selection Recommendations

The part 1825257-2 (TE Connectivity ALCOSWITCH Switches) is the qualified substitute for the obsolete MSS12AG. Selection of this substitute is based on the following engineering factors:

Compliance and Certification: Both the original MSS12AG and substitute 1825257-2 maintain ROHS3 compliance, ensuring regulatory alignment for current manufacturing standards. Both components carry identical HTSUS classification (8536.50.9050) and EAR99 ECCN designation, confirming equivalent trade and export status.

Product Lifecycle Status: The MSS12AG is classified as obsolete, creating supply chain risk for new designs and ongoing production. The 1825257-2 maintains active manufacturing status with documented inventory availability (2064 pcs), ensuring long-term component sourcing and supply continuity.

Electrical and Mechanical Equivalence: The substitute part maintains identical electrical specifications (0.4VA, 20V AC/DC, SPDT configuration) and mechanical dimensions (5.00mm actuator, 2.00mm travel, through-hole PC pin termination). This equivalence ensures direct circuit compatibility without design modification.

Performance Enhancement: The 1825257-2 provides enhanced performance characteristics, including extended operating temperature range (-20°C to 85°C versus -10°C to 60°C) and increased electrical life rating (15,000 cycles versus 10,000 cycles), while maintaining full backward compatibility with existing applications.

Frequently Asked Questions (FAQ)

Q: Can the 1825257-2 be used as a direct replacement for the MSS12AG in existing circuit designs?

A: Yes. The 1825257-2 maintains identical electrical ratings (0.4VA, 20V AC/DC), circuit configuration (SPDT), and mechanical dimensions (5.00mm actuator, 2.00mm travel). Through-hole PC pin termination is identical, enabling direct PCB substitution without circuit modification.

Q: What are the key differences between the MSS12AG and 1825257-2?

A: The primary differences are product status (obsolete versus active), operating temperature range (-10°C to 60°C versus -20°C to 85°C), and documented mechanical life (unspecified versus 15,000 cycles). The 1825257-2 provides enhanced performance specifications while maintaining full electrical and mechanical compatibility.

Q: Are there packaging differences between these components?

A: The MSS12AG is specified with packaging designation "-" (not specified), while the 1825257-2 is supplied in bulk packaging. Both components use identical through-hole PC pin termination, ensuring compatibility with standard PCB assembly processes.

Q: Does the substitute part maintain the same contact material and finish?

A: Both components feature gold contact finish. The MSS12AG contact material is not specified, while the 1825257-2 uses copper alloy with gold plating. Gold finish ensures equivalent signal integrity and corrosion resistance for low-voltage switching applications.

Q: What is the compliance status of the substitute part?

A: The 1825257-2 maintains ROHS3 compliance identical to the MSS12AG. Both components are classified under HTSUS code 8536.50.9050 and assigned EAR99 ECCN designation, confirming equivalent regulatory and trade status.

Q: Is the 1825257-2 suitable for applications requiring extended temperature operation?

A: Yes. The 1825257-2 operates across -20°C to 85°C, providing a wider temperature range than the original MSS12AG (-10°C to 60°C). This extended range supports applications requiring operation in elevated or reduced temperature environments.

Q: How does the electrical life rating comparison affect component selection?

A: The 1825257-2 provides 15,000 electrical life cycles compared to the MSS12AG specification of 10,000 cycles. This 50% increase in rated electrical life extends component service life in high-cycle switching applications while maintaining full electrical compatibility.