TE Connectivity ALCOSWITCH 435802-4 Equivalent & Substitute Parts

Part Overview

The TE Connectivity ALCOSWITCH 435802-4 is a DIP switch with SPST circuit configuration, 5-position piano actuator, rated for 25mA at 24VDC, and designed for through-hole, right-angle mounting. This component is classified as obsolete, necessitating identification of equivalent and substitute parts for ongoing design requirements and production continuity. The part operates across a temperature range of -55°C to 105°C with a mechanical and electrical life of 7,000 cycles. Direct equivalents and functional alternatives are available from TE Connectivity and other manufacturers with varying electrical ratings, actuator types, and compliance certifications.

Substiute Parts

435802-4

TE Connectivity ALCOSWITCH SwitchesIn Stock: 836435802-4 Datasheet

Current PartRFQ

5435802-4

TE Connectivity ALCOSWITCH SwitchesIn Stock: 8695435802-4 Datasheet

DirectRFQ

1-5435802-7

TE Connectivity ALCOSWITCH SwitchesIn Stock: 19131-5435802-7 Datasheet

SimilarRFQ

76PRB05ST

Grayhill Inc.In Stock: 104776PRB05ST Datasheet

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76PRB05T

Grayhill Inc.In Stock: 91376PRB05T Datasheet

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78B05ST

Grayhill Inc.In Stock: 610078B05ST Datasheet

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78B05T

Grayhill Inc.In Stock: 707278B05T Datasheet

SimilarRFQ

78RB05ST

Grayhill Inc.In Stock: 611678RB05ST Datasheet

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78RB05T

Grayhill Inc.In Stock: 93678RB05T Datasheet

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BD05

C&KIn Stock: 2378BD05 Datasheet

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KAP1105E

E-SwitchIn Stock: 863KAP1105E Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the 435802-4 is determined by the following critical parameters: circuit configuration (SPST), number of positions (5), current rating (25mA minimum), voltage rating (24VDC minimum), actuator type (piano or slide), mounting type (through-hole), and pitch (0.100"). Parts are grouped into three categories based on substitution compatibility:

Direct Equivalent (Identical Electrical and Mechanical Specifications): Parts that maintain the same circuit, position count, current rating, voltage rating, and mounting configuration. The TE Connectivity 5435802-4 qualifies as a direct equivalent with identical electrical parameters and improved compliance status.

Functional Equivalent (Higher Electrical Ratings): Parts that exceed the original specifications in current and voltage ratings while maintaining compatible mechanical form factors and circuit configuration. These include Grayhill 76PRB05ST, 76PRB05T, 78B05ST, 78B05T, 78RB05ST, and 78RB05T, which provide 150mA at 30VDC ratings and are suitable for applications requiring higher electrical capacity within the same mechanical envelope.

Compatible Alternative (Different Actuator Type or Reduced Specifications): Parts that maintain SPST circuit and 5-position configuration but differ in actuator type (slide versus piano) or electrical ratings. The C&K BD05 and E-Switch KAP1105E represent alternatives with different actuator mechanisms or operating characteristics.

Parameter Comparison

Engineering Selection Recommendations

Primary Recommendation: TE Connectivity 5435802-4

The 5435802-4 is the optimal substitute for the obsolete 435802-4. This part maintains identical electrical specifications (25mA at 24VDC), circuit configuration (SPST), position count (5), and mechanical form factor (piano actuator, through-hole right-angle mounting). The 5435802-4 carries Last Time Buy status and achieves ROHS3 compliance, addressing regulatory requirements while preserving full functional compatibility. Packaging is supplied in tube format.

Secondary Recommendation: E-Switch KAP1105E

The KAP1105E provides an active-status alternative with matching electrical ratings (25mA at 24VDC), SPST circuit, 5-position configuration, and piano actuator. This part is ROHS3 compliant and currently in active production. The KAP1105E operates within a reduced temperature range (-40°C to 85°C) compared to the original part and exhibits lower mechanical and electrical life (2,000 cycles versus 7,000 cycles). Selection of this part is appropriate for applications not requiring the extended temperature range or cycle life of the original specification.

Higher-Capacity Alternatives: Grayhill 76PRB05ST, 76PRB05T

The Grayhill 76PRB05ST and 76PRB05T are piano-actuator DIP switches with identical mechanical mounting (through-hole, right-angle) and pitch (0.100") but provide elevated electrical ratings (150mA at 30VDC). These parts are ROHS3 compliant and active in production. Selection is appropriate for applications requiring higher current or voltage capacity within the same mechanical envelope. Operating temperature range is reduced to -40°C to 85°C, and mechanical/electrical life is 2,000 cycles.

Slide-Actuator Alternatives: Grayhill 78 Series

The Grayhill 78B05ST, 78B05T, 78RB05ST, and 78RB05T represent slide-actuator alternatives with 150mA at 30VDC ratings. These parts maintain SPST circuit, 5-position configuration, and 0.100" pitch but differ in actuator type (slide versus piano) and mounting configuration (standard through-hole versus right-angle). The 78RB series features flush, recessed actuator level. All are ROHS3 compliant and active in production. Selection requires confirmation that slide actuation is functionally acceptable for the application.

Lower-Voltage Alternative: C&K BD05

The C&K BD05 is a slide-actuator DIP switch with 100mA at 5VDC rating, suitable only for applications operating at 5VDC or lower. This part is ROHS3 compliant and active in production but is not recommended as a substitute for 24VDC applications.

Frequently Asked Questions (FAQ)

Q: Can the 5435802-4 be used as a direct replacement for the 435802-4?

A: Yes. The 5435802-4 is a direct electrical and mechanical equivalent with identical circuit configuration (SPST), position count (5), current rating (25mA), voltage rating (24VDC), actuator type (piano), and mounting configuration (through-hole, right-angle). The primary differences are improved RoHS compliance (ROHS3 versus non-compliant) and Last Time Buy status. No design modifications are required.

Q: What is the difference between the 5435802-4 and the 1-5435802-7?

A: The 1-5435802-7 differs in position count (6 positions versus 5 positions) and includes tape seal and washable features. Electrical ratings, actuator type, and mounting configuration remain identical. The 1-5435802-7 is suitable only if the application requires 6-position switching capability.

Q: Can Grayhill 76PRB05ST be used in place of the 435802-4?

A: The 76PRB05ST is mechanically and functionally compatible but provides higher electrical ratings (150mA at 30VDC versus 25mA at 24VDC). This part is suitable for applications where the original 25mA at 24VDC specification is a minimum requirement. The operating temperature range is reduced (-40°C to 85°C versus -55°C to 105°C), and mechanical life is lower (2,000 cycles versus 7,000 cycles). Confirmation that these reduced specifications are acceptable is required before selection.

Q: Why are the Grayhill 78 series parts listed as alternatives if they use slide actuators instead of piano actuators?

A: The 78 series parts maintain SPST circuit, 5-position configuration, 0.100" pitch, and through-hole mounting, making them mechanically compatible with the same PCB footprint. However, the slide actuator mechanism differs functionally from the piano actuator. These parts are listed as compatible alternatives only for applications where actuator type substitution is acceptable. Confirmation of functional compatibility with the end application is required.

Q: Is the KAP1105E suitable for applications requiring the full -55°C to 105°C temperature range?

A: No. The KAP1105E operates only within -40°C to 85°C. Applications requiring operation at temperatures below -40°C or above 85°C must use the 5435802-4 or 1-5435802-7, which maintain the original -55°C to 105°C specification.

Q: What is the significance of the "Last Time Buy" status for the 5435802-4?

A: Last Time Buy status indicates that TE Connectivity will continue to supply this part for a limited period before discontinuation. Designs utilizing the 5435802-4 should plan for transition to an alternative part within the manufacturer's specified Last Time Buy window. The KAP1105E or Grayhill alternatives with Active status are recommended for new designs requiring long-term availability.

Q: Are all substitute parts RoHS compliant?

A: All substitute parts listed carry ROHS3 compliance status. The original 435802-4 is RoHS non-compliant. Selection of any substitute part addresses RoHS compliance requirements for new designs or production transitions.

Q: What packaging formats are available for the substitute parts?

A: All substitute parts are supplied in tube packaging. The original 435802-4 packaging format is not specified in the provided data. Confirmation of packaging compatibility with assembly processes is recommended.

Q: Can the BD05 be used as a substitute for 24VDC applications?

A: No. The BD05 is rated for 5VDC maximum and is not suitable for 24VDC applications. This part is listed for reference only and should not be selected for the 435802-4 replacement.