C&K 7105SD9ALE Toggle Switch SPDT Equivalent & Substitute Parts

Part Overview

The C&K 7105SD9ALE is a through-hole, right-angle toggle switch with SPDT (Single Pole Double Throw) circuit configuration, rated for 5A at 120V AC and 28V DC. This part is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and procurement. The switch features a momentary-off-momentary (Mom-Off-Mom) function with epoxy sealed terminals and operates across a temperature range of -30°C to 85°C.

Substiute Parts

7105SD9ALE

C&KIn Stock: 7997105SD9ALE Datasheet

Current PartRFQ

7105SD9ARE

C&KIn Stock: 8947105SD9ARE 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 7105SD9ALE are classified based on strict electrical and mechanical parameter alignment:

Direct Equivalent (Same Manufacturer): The 7105SD9ARE from C&K maintains identical electrical specifications (5A at 120V AC, 28V DC), circuit configuration (SPDT), switch function (Mom-Off-Mom), mounting type (through hole, right angle), actuator dimensions (12.45mm), and operating temperature range (-30°C to 85°C). The primary distinction is product status (active versus obsolete) and packaging format (bulk versus standard).

Similar Substitutes (Cross-Manufacturer): The 100SP4T1B4M6QE (E-Switch) and WT127S1D1AB (Electroswitch) share the core electrical and mechanical parameters: SPDT circuit, Mom-Off-Mom function, through-hole right-angle mounting, PC pin termination, and identical operating temperature range. However, these parts exhibit variations in actuator length (10.41mm and 12.90mm respectively versus 12.45mm) and current/voltage ratings that must be evaluated for specific application requirements.

Key Parameters for Substitution Determination:

• Circuit configuration (SPDT)
• Switch function (Mom-Off-Mom)
• Mounting type (through hole, right angle)
• Termination style (PC pin)
• Operating temperature range (-30°C to 85°C)
• RoHS and compliance status

Parameter Comparison

Engineering Selection Recommendations

For Direct Replacement (Preferred): The 7105SD9ARE is the primary substitute for the obsolete 7105SD9ALE. Both parts are manufactured by C&K, share identical electrical ratings (5A at 120V AC, 28V DC), and maintain the same mechanical configuration. The 7105SD9ARE is currently in active production status with 857 units in stock, ensuring long-term availability. Both parts meet ROHS3 compliance and carry identical moisture sensitivity ratings.

For Cross-Manufacturer Substitution: The 100SP4T1B4M6QE (E-Switch) maintains full electrical and functional compatibility with identical current and voltage ratings. The 2.04mm reduction in actuator length (10.41mm versus 12.45mm) may affect panel mounting clearance and should be evaluated against specific mechanical constraints.

The WT127S1D1AB (Electroswitch) is suitable only for applications where the reduced current rating (0.5VA versus 5A) and AC voltage limitation (28V versus 120V) are acceptable. This part offers extended electrical life (60,000 cycles versus 40,000 cycles) but operates at lower power levels. REACH status is vendor-undefined for this part.

Compliance Considerations: All substitute parts maintain RoHS compliance. The 7105SD9ARE carries REACH Affected status, while the 7105SD9ALE and 100SP4T1B4M6QE are REACH Unaffected. The WT127S1D1AB has undefined REACH status.

Frequently Asked Questions (FAQ)

Q: Can the 7105SD9ARE directly replace the 7105SD9ALE without design modification? A: Yes. The 7105SD9ARE is electrically and mechanically identical to the 7105SD9ALE. Both parts share the same current rating (5A AC/DC), voltage ratings (120V AC, 28V DC), circuit configuration (SPDT), switch function (Mom-Off-Mom), mounting type (through hole, right angle), and actuator dimensions (12.45mm). The primary difference is product status and packaging.

Q: What are the key differences between the C&K 7105SD9ARE and the E-Switch 100SP4T1B4M6QE? A: Both parts are electrically equivalent with identical current and voltage ratings. The primary mechanical difference is actuator length: the E-Switch part measures 10.41mm versus 12.45mm for the C&K part. This 2.04mm difference may affect panel cutout alignment and actuator clearance in space-constrained applications. Both parts are ROHS3 compliant and carry identical moisture sensitivity ratings.

Q: Is the Electroswitch WT127S1D1AB suitable as a substitute? A: The WT127S1D1AB shares the same circuit configuration (SPDT), switch function (Mom-Off-Mom), and mounting type (through hole, right angle). However, it operates at significantly lower power levels (0.5VA versus 5A) and is limited to 28V AC/DC operation versus the 120V AC capability of the main part. This part is suitable only for low-power applications within its rated specifications.

Q: What packaging formats are available for these substitute parts? A: The 7105SD9ALE is supplied in standard packaging, while the 7105SD9ARE, 100SP4T1B4M6QE, and WT127S1D1AB are available in bulk packaging format.

Q: Are all substitute parts RoHS compliant? A: Yes. The 7105SD9ARE and 100SP4T1B4M6QE are ROHS3 compliant. The WT127S1D1AB is RoHS compliant. All parts meet environmental compliance requirements for standard industrial applications.

Q: What is the electrical life expectancy for each part? A: The 7105SD9ALE, 7105SD9ARE, and 100SP4T1B4M6QE are rated for 40,000 electrical cycles. The WT127S1D1AB offers extended life at 60,000 cycles, though this advantage applies only within its lower power rating specifications.