A107SYCB Toggle Switch SPDT Equivalent & Substitute Parts

Part Overview

The A107SYCB is a toggle switch manufactured by TE Connectivity ALCOSWITCH Switches, classified as a Single Pole Double Throw (SPDT) panel mount switch with a rated capacity of 0.4VA at 20V. This switch features a standard round actuator with PC pin termination and epoxy sealed terminals for environmental protection. The product is currently obsolete, which necessitates identification of functionally equivalent alternatives for ongoing applications and new designs requiring SPDT toggle switch functionality with similar mechanical interfaces.

Substiute Parts

A107SYCB

TE Connectivity ALCOSWITCH SwitchesIn Stock: 1054A107SYCB Datasheet

Current PartRFQ

7107SYCQE

C&KIn Stock: 14617107SYCQE Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the A107SYCB is determined by compatibility across the following critical parameters:

Mechanical Compatibility Requirements:

• Circuit configuration must be SPDT
• Switch function must be On-Off-Mom
• Mounting type must be Panel Mount
• Actuator type must be Standard Round
• Panel cutout dimensions must be Circular - 6.35mm Dia
• Bushing thread must be 1/4-40
• Termination style must be PC Pin

Electrical Compatibility Requirements:

• Current rating must equal or exceed 0.4VA
• Voltage rating (AC) must equal or exceed 20V
• Voltage rating (DC) must equal or exceed 20V

The substitute part 7107SYCQE from C&K satisfies all mechanical compatibility requirements and exceeds all electrical requirements, making it a valid functional equivalent for applications currently using the A107SYCB.

Parameter Comparison

Engineering Selection Recommendations

The 7107SYCQE from C&K is a direct functional substitute for the obsolete A107SYCB. Selection of this alternative is supported by the following factors:

Mechanical Compatibility: The 7107SYCQE maintains identical panel mount interface specifications, including the 6.35mm circular cutout and 1/4-40 bushing thread, ensuring direct installation compatibility without panel modifications.

Electrical Performance: The 7107SYCQE exceeds the electrical requirements of the A107SYCB across all ratings. The current capacity of 5A (AC/DC) substantially exceeds the 0.4VA requirement, and voltage ratings of 120V AC and 28V DC provide operational margin beyond the original 20V specification.

Product Status and Compliance: The 7107SYCQE is an active product with ROHS3 compliance, addressing regulatory requirements that the obsolete A107SYCB does not meet. The extended operating temperature range of -30°C to 85°C provides improved environmental tolerance compared to the original -20°C to 85°C specification.

Reliability Characteristics: The 7107SYCQE demonstrates superior electrical life rating of 40,000 cycles compared to the 6,000 cycles of the A107SYCB, indicating enhanced durability for extended service applications.

Frequently Asked Questions (FAQ)

Q: Can the 7107SYCQE be used as a direct replacement for the A107SYCB without circuit modifications?

A: Yes. The 7107SYCQE maintains identical mechanical mounting specifications and SPDT circuit configuration. The higher electrical ratings of the substitute part do not require circuit modifications for applications originally designed for the A107SYCB.

Q: What is the significance of the actuator length difference between the two parts?

A: The A107SYCB has an actuator length of 10.41mm while the 7107SYCQE measures 10.67mm. This 0.26mm difference is within typical mechanical tolerance for panel mount toggle switches and does not affect functional compatibility or panel interface compatibility.

Q: Does the higher current rating of the 7107SYCQE affect its suitability for low-current applications?

A: No. The 7107SYCQE is suitable for applications requiring current levels from zero to its maximum rated capacity of 5A. The higher rating provides operational margin and does not degrade performance in low-current applications such as the 0.4VA requirement of the original A107SYCB.

Q: What is the impact of RoHS compliance on part selection?

A: The A107SYCB is RoHS non-compliant, while the 7107SYCQE is ROHS3 compliant. For applications subject to RoHS regulations or customer requirements mandating RoHS compliance, the 7107SYCQE is the appropriate selection.

Q: Are there any packaging differences between the A107SYCB and 7107SYCQE?

A: The A107SYCB is supplied in standard packaging, while the 7107SYCQE is supplied in bulk packaging. Packaging format does not affect component functionality or electrical performance.

Q: How do the electrical life ratings compare between these parts?

A: The A107SYCB is rated for 6,000 electrical cycles, while the 7107SYCQE is rated for 40,000 cycles. The substitute part provides approximately 6.7 times greater cycle life, indicating enhanced durability for applications with frequent switching operations.