SLB1250R8 Equivalent & Substitute Parts

Part Overview

The SLB1250R8 is a slide switch with SPDT (Single Pole Double Throw) configuration manufactured by APEM Inc. This through-hole, right-angle mounted switch is rated for 300mA at 125V AC and 30V DC, with a standard actuator length of 8.00mm and silver contact finish. The product is currently obsolete, making identification of compatible substitute parts essential for design continuity and procurement planning.

Substiute Parts

SLB1250R8

APEM Inc.In Stock: 889SLB1250R8 Datasheet

Current PartRFQ

1103M2S5ABE2

C&KIn Stock: 8661103M2S5ABE2 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the SLB1250R8 is determined by the following critical parameters:

• Circuit Configuration: SPDT topology must be maintained for functional equivalence
• Mounting Type: Through-hole, right-angle orientation required for PCB compatibility
• Termination Style: PC pin termination for direct board mounting
• Voltage and Current Ratings: Substitute must meet or exceed the 125V AC / 30V DC and 300mA specifications
• Actuator Type and Length: Standard actuator with compatible physical dimensions
• Environmental Compliance: RoHS3 compliance required for regulatory alignment

The identified substitute part 1103M2S5ABE2 from C&K maintains SPDT circuit configuration and through-hole, right-angle mounting with PC pin termination. However, electrical ratings differ significantly and must be evaluated against application requirements.

Parameter Comparison

Engineering Selection Recommendations

The 1103M2S5ABE2 from C&K is mechanically and functionally compatible as a through-hole, right-angle SPDT slide switch with PC pin termination. Both parts maintain ROHS3 compliance and REACH unaffected status.

Critical evaluation points for substitution:

• Electrical Ratings: The substitute part is rated for 20V AC/DC and 0.4VA, which is substantially lower than the original 125V AC / 30V DC specification. Substitution is only viable if the application operates within the lower voltage and current envelope.
• Switch Function: The original SLB1250R8 operates as On-On, while the substitute 1103M2S5ABE2 operates as On-Off-On. This functional difference may affect circuit behavior depending on application requirements.
• Operating Temperature: The substitute has a maximum operating temperature of 65°C compared to the original 85°C. Applications requiring higher temperature operation cannot use this substitute.
• Actuator Length: The substitute actuator is 9.04mm versus the original 8.00mm. Physical clearance and panel cutout compatibility must be verified.
• Contact Material: The substitute uses gold-plated contacts versus silver on the original. This may affect contact resistance characteristics in specific applications.
• Product Availability: The substitute is actively manufactured with 787 units in stock, providing supply continuity for the obsolete original part.

Frequently Asked Questions (FAQ)

Q: Can the 1103M2S5ABE2 directly replace the SLB1250R8 in all applications?

A: No. While both are SPDT through-hole, right-angle slide switches with PC pin termination, the substitute has significantly lower voltage and current ratings (20V AC/DC, 0.4VA versus 125V AC, 30V DC, 300mA). Substitution is only valid if your application operates within these lower electrical specifications.

Q: What is the difference between On-On and On-Off-On switch functions?

A: On-On switches maintain contact in both positions without a neutral center state. On-Off-On switches have a center off position between two active positions. This functional difference may require circuit redesign depending on application logic.

Q: Are there physical mounting differences between these parts?

A: Both parts use through-hole, right-angle mounting with PC pin termination. However, the actuator length differs (8.00mm versus 9.04mm). Panel cutout dimensions and clearance must be verified before substitution.

Q: Do both parts meet current compliance requirements?

A: Yes. Both the SLB1250R8 and 1103M2S5ABE2 are ROHS3 compliant and REACH unaffected, meeting current regulatory standards.

Q: What is the impact of different contact materials?

A: The original uses silver contacts while the substitute uses gold-plated contacts. Gold provides superior corrosion resistance and lower contact resistance, which may improve performance in low-signal applications. For high-current applications, verify that contact resistance characteristics remain acceptable.

Q: Can the substitute handle the same temperature range as the original?

A: No. The substitute is rated for -30°C to 65°C, while the original operates to 85°C. Applications requiring operation above 65°C cannot use the 1103M2S5ABE2.