U15SD9ALE Toggle Switch SPDT Equivalent & Substitute Parts

Part Overview

The U15SD9ALE is a through-hole, right-angle toggle switch manufactured by C&K, classified as SPDT (Single Pole Double Throw) with momentary-off-momentary switching function. This component is rated for 5A at 120V AC and 28V DC, with an operating temperature range of -30°C to 85°C. The part is currently obsolete, making identification of functionally equivalent alternatives necessary for ongoing design support and production continuity.

Substiute Parts

U15SD9ALE

C&KIn Stock: 986U15SD9ALE Datasheet

Current PartRFQ

U15SD9ARE

C&KIn Stock: 1023U15SD9ARE Datasheet

DirectRFQ

100SP4T1B4M6QE

E-SwitchIn Stock: 1171100SP4T1B4M6QE Datasheet

SimilarRFQ

WT127S1D1AB

ElectroswitchIn Stock: 1109WT127S1D1AB Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the U15SD9ALE are identified based on strict electrical and mechanical compatibility criteria. The primary substitution parameters are:

• Circuit configuration (SPDT)
• Switch function (Mom-Off-Mom)
• Current rating (5A AC/DC minimum)
• Voltage rating (120V AC / 28V DC minimum)
• Mounting type (Through Hole, Right Angle)
• Termination style (PC Pin)
• Operating temperature range (-30°C to 85°C)
• Actuator type (Standard Round)

Parts meeting all these criteria are classified as direct substitutes. Parts with minor deviations in non-critical parameters (such as actuator length within ±2mm tolerance or electrical life exceeding minimum requirements) are classified as compatible alternatives.

Parameter Comparison

Engineering Selection Recommendations

U15SD9ARE (C&K) is the primary direct substitute. This part maintains identical electrical ratings (5A at 120V AC / 28V DC), mechanical configuration, and actuator dimensions. The part is currently in active production status with 922 units in stock. RoHS compliance is maintained, though REACH status differs from the original part.

100SP4T1B4M6QE (E-Switch) is a compatible alternative meeting all critical electrical and mechanical parameters. The actuator length is 10.41mm compared to 12.45mm in the original part, representing a 2.04mm reduction. This dimension variance may require mechanical clearance verification in panel-mounted applications. The part is active and ROHS3 compliant.

WT127S1D1AB (Electroswitch) is a compatible alternative with notable electrical derating. The current rating is specified as 0.5VA, significantly lower than the 5A requirement of the original part. The AC voltage rating is limited to 28V, below the 120V AC specification of U15SD9ALE. This part is suitable only for low-power applications operating within 28V AC/DC limits. Actuator length is 12.90mm, within acceptable tolerance. Electrical life is 60,000 cycles, exceeding the original specification.

Frequently Asked Questions (FAQ)

Q: Can U15SD9ARE be used as a direct replacement for U15SD9ALE?

A: Yes. U15SD9ARE maintains identical electrical ratings (5A at 120V AC / 28V DC), circuit configuration (SPDT), switch function (Mom-Off-Mom), mounting type (Through Hole, Right Angle), and actuator dimensions (12.45mm). The part is currently in active production.

Q: What is the significance of the actuator length difference in 100SP4T1B4M6QE?

A: The 100SP4T1B4M6QE has an actuator length of 10.41mm versus 12.45mm in the original part. This 2.04mm reduction may affect panel clearance and operator ergonomics. Mechanical fit verification is required before implementation in existing panel designs.

Q: Is WT127S1D1AB suitable for all applications using U15SD9ALE?

A: No. WT127S1D1AB has a current rating of 0.5VA and AC voltage rating of 28V, both significantly lower than the original part's 5A and 120V AC ratings. This part is suitable only for low-power applications operating within 28V AC/DC limits and cannot replace U15SD9ALE in higher-power circuits.

Q: What compliance certifications should be verified when substituting parts?

A: All substitute parts maintain RoHS compliance. REACH status varies: U15SD9ARE is REACH Affected, while 100SP4T1B4M6QE is REACH Unaffected. Verify REACH compliance requirements for your specific application and supply chain.

Q: Are there packaging differences between substitute parts?

A: U15SD9ALE and U15SD9ARE are packaged individually. 100SP4T1B4M6QE and WT127S1D1AB are supplied in bulk packaging. Confirm packaging requirements for your procurement and assembly processes.

Q: What is the electrical life difference between substitute parts?

A: U15SD9ALE and U15SD9ARE are rated for 40,000 cycles. 100SP4T1B4M6QE is also rated for 40,000 cycles. WT127S1D1AB exceeds this specification at 60,000 cycles. For applications requiring extended operational life, WT127S1D1AB provides additional margin within its voltage and current limitations.