TE Connectivity A103SYZB Toggle Switch SPDT Equivalent & Substitute Parts

Part Overview

The TE Connectivity A103SYZB is a toggle switch with Single Pole Double Throw (SPDT) configuration, rated for 0.4VA at 20V AC/DC. This component features panel mount installation with solder lug termination and is classified as obsolete. Due to its obsolete product status, equivalent and substitute parts from active manufacturers are necessary to maintain design continuity and ensure ongoing component availability for new production and field replacements.

Substiute Parts

A103SYZB

TE Connectivity ALCOSWITCH SwitchesIn Stock: 762A103SYZB Datasheet

Current PartRFQ

1-1825137-9

TE Connectivity ALCOSWITCH SwitchesIn Stock: 12061-1825137-9 Datasheet

DirectRFQ

100SP3T1B1M1REH

E-SwitchIn Stock: 2068100SP3T1B1M1REH Datasheet

SimilarRFQ

7103SYZBE

C&KIn Stock: 44077103SYZBE Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the A103SYZB is determined by strict equivalence across the following critical parameters:

Mandatory Matching Parameters:

• Circuit Configuration: SPDT
• Switch Function: On-Off-On
• Current Rating: 0.4VA (AC/DC)
• Voltage Rating: 20V AC and 20V DC
• Mounting Type: Panel Mount
• Termination Style: Solder Lug
• Panel Cutout Dimensions: Circular - 6.35mm Dia
• Bushing Thread: 1/4-40
• Actuator Type: Standard Round
• Features: Epoxy Sealed Terminals

All substitute parts listed meet these mandatory parameters. Variations in operating temperature range, actuator length, electrical life, and compliance certifications are secondary considerations that do not prevent functional substitution but may influence selection based on application requirements and regulatory compliance needs.

Parameter Comparison

Engineering Selection Recommendations

Direct Equivalent - TE Connectivity 1-1825137-9: This part is the direct successor from the same manufacturer (TE Connectivity ALCOSWITCH). It maintains identical electrical specifications and mechanical dimensions to the A103SYZB while offering active product status. The 1-1825137-9 is ROHS3 compliant and provides extended operating temperature range (-30°C to 85°C versus -20°C to 85°C). This part is the preferred choice for applications requiring manufacturer continuity and regulatory compliance.

Cross-Manufacturer Equivalent - E-Switch 100SP3T1B1M1REH: The E-Switch 100SP3T1B1M1REH provides full electrical and mechanical compatibility with identical current and voltage ratings. This part offers extended electrical life (40,000 cycles versus 6,000 cycles) and ROHS3 compliance. The actuator length matches the original specification at 10.41mm. This option is suitable for applications where extended cycle life is beneficial and REACH compliance is not required.

Cross-Manufacturer Equivalent - C&K 7103SYZBE: The C&K 7103SYZBE meets all mandatory electrical and mechanical parameters with identical current, voltage, and circuit specifications. This part features extended electrical life (40,000 cycles) and ROHS3 compliance. The actuator length is 10.67mm, representing a 0.26mm variance from the original specification. This option is suitable for applications where the minor actuator length difference does not impact mechanical fit and REACH compliance is required.

Frequently Asked Questions (FAQ)

Q: Can the 1-1825137-9 be used as a direct replacement for the A103SYZB? A: Yes. The 1-1825137-9 maintains identical electrical ratings (0.4VA at 20V AC/DC), circuit configuration (SPDT), mounting type (panel mount), and mechanical dimensions (6.35mm circular cutout, 1/4-40 bushing thread). The primary advantage is active product status and ROHS3 compliance.

Q: What is the difference between the E-Switch and C&K substitutes? A: Both the E-Switch 100SP3T1B1M1REH and C&K 7103SYZBE provide identical electrical specifications and extended electrical life (40,000 cycles). The C&K part has a 0.26mm longer actuator (10.67mm versus 10.41mm). The E-Switch part is REACH unaffected, while the C&K part is REACH affected. Selection depends on regulatory requirements and mechanical fit constraints.

Q: Are all substitute parts ROHS3 compliant? A: Yes. All three substitute parts (1-1825137-9, 100SP3T1B1M1REH, and 7103SYZBE) are ROHS3 compliant. The original A103SYZB is RoHS non-compliant, making substitution necessary for applications with RoHS compliance requirements.

Q: Does the extended electrical life of the E-Switch and C&K parts affect compatibility? A: No. Extended electrical life (40,000 cycles versus 6,000 cycles) represents an improvement and does not affect functional compatibility. Both parts operate identically within the specified electrical and mechanical parameters.

Q: What is the significance of the 0.26mm actuator length difference in the C&K part? A: The C&K 7103SYZBE has an actuator length of 10.67mm compared to 10.41mm in the original and other substitutes. This minor difference may affect mechanical clearance in space-constrained panel designs. Verify panel geometry before selection if actuator protrusion is a design constraint.

Q: Which substitute part should be selected for new production? A: For new production requiring manufacturer continuity, select the TE Connectivity 1-1825137-9. For applications prioritizing extended cycle life and cross-manufacturer flexibility, select either the E-Switch 100SP3T1B1M1REH (REACH unaffected) or C&K 7103SYZBE (REACH affected) based on regulatory requirements.

Q: Are packaging differences significant between these parts? A: All substitute parts are supplied in bulk packaging. The original A103SYZB packaging specification is not provided. Confirm packaging requirements with procurement specifications before final selection.