TE Connectivity ALCOSWITCH 435802-8 Equivalent & Substitute Parts

Part Overview

The TE Connectivity ALCOSWITCH 435802-8 is a 10-position DIP switch with SPST circuit configuration, piano actuator, and 25mA 24VDC electrical rating. This component is classified as Active product status and is currently in stock with 899 pieces available. The switch features through-hole, right-angle mounting with gold-plated copper alloy contacts and operates across an extended temperature range of -55°C to 105°C.

Substitute parts are identified based on functional equivalence within the SPST DIP switch category. Alternative models may be required due to design revisions, supply chain optimization, manufacturing discontinuation notices, or specific application requirements that demand different actuator types, voltage ratings, or mechanical characteristics.

Key Parameters

Parameter	435802-8 Specification
Manufacturer	TE Connectivity ALCOSWITCH Switches
Circuit Configuration	SPST
Number of Positions	10
Current Rating	25mA
Voltage Rating	24VDC
Actuator Type	Piano
Mounting Type	Through Hole, Right Angle
Contact Material	Copper Alloy
Contact Finish	Gold
Pitch	0.100" (2.54mm)
Operating Temperature Range	-55°C to 105°C
Product Status	Active
RoHS Status	RoHS non-compliant

Substitute Part Grouping Explanation

Substitution logic for the 435802-8 is based on the following critical parameters that must align for functional equivalence:

Primary Matching Criteria:

Circuit configuration: SPST (Single Pole Single Throw)
Number of positions: 10
Current rating: 25mA minimum
Voltage rating: 24VDC or higher
Pitch: 0.100" (2.54mm) full pitch
Mounting type: Through hole
Termination style: PC pin

Secondary Compatibility Factors:

Actuator type (piano, rocker, or slide variants acceptable with design review)
Contact material and finish (copper alloy or phosphor bronze with gold finish)
Operating temperature range (minimum -40°C to 85°C acceptable; extended range -55°C to 105°C preferred)
Mechanical and electrical life cycles (minimum 2,000 cycles acceptable)

Substitute parts are grouped by actuator type and electrical rating. Parts with identical electrical specifications but different actuator geometries require PCB layout verification. Parts with higher current or voltage ratings provide design margin and are directly substitutable. Parts with lower electrical ratings are not substitutable for this application.

Parameter Comparison

Parameter	435802-8	KAP1110E	2-5435668-8	78B10ST	78B10T	78RB10ST	78RB10T	BD10
Manufacturer	TE Connectivity	E-Switch	TE Connectivity	Grayhill Inc.	Grayhill Inc.	Grayhill Inc.	Grayhill Inc.	C&K
Circuit	SPST	SPST	SPST	SPST	SPST	SPST	SPST	SPST
Positions	10	10	8	10	10	10	10	10
Current Rating	25mA	25mA	60mA	150mA	150mA	150mA	150mA	100mA
Voltage Rating	24VDC	24VDC	5VDC	30VDC	30VDC	30VDC	30VDC	5VDC
Actuator Type	Piano	Piano	Rocker	Slide (Standard)	Slide (Standard)	Slide (Standard)	Slide (Standard)	Slide (Standard)
Actuator Level	Raised	Raised	Flush, Recessed	Raised	Raised	Flush, Recessed	Flush, Recessed	Raised
Mounting Type	Through Hole, Right Angle	Through Hole, Right Angle	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole
Contact Material	Copper Alloy	Phosphor Bronze	Copper Alloy	Copper Alloy	Copper Alloy	Copper Alloy	Copper Alloy	Phosphor Bronze
Contact Finish	Gold	Gold	Gold	Gold	Gold	Gold	Gold	Gold
Height Above Board	0.290" (7.37mm)	0.402" (10.20mm)	0.290" (7.37mm)	0.315" (8.00mm)	0.315" (8.00mm)	0.265" (6.73mm)	0.265" (6.73mm)	0.297" (7.54mm)
Pitch	0.100" (2.54mm)	0.100" (2.54mm)	0.100" (2.54mm)	0.100" (2.54mm)	0.100" (2.54mm)	0.100" (2.54mm)	0.100" (2.54mm)	0.100" (2.54mm)
Operating Temperature	-55°C to 105°C	-40°C to 85°C	-55°C to 105°C	-40°C to 85°C	-40°C to 85°C	-40°C to 85°C	-40°C to 85°C	-40°C to 85°C
Mechanical Life	7,000 Cycles	2,000 Cycles	2,000 Cycles	2,000 Cycles	2,000 Cycles	2,000 Cycles	2,000 Cycles	10,000 Cycles
Electrical Life	7,000 Cycles	2,000 Cycles	2,000 Cycles	2,000 Cycles	2,000 Cycles	2,000 Cycles	2,000 Cycles	10,000 Cycles
RoHS Status	RoHS non-compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Product Status	Active	Active	Last Time Buy	Active	Active	Active	Active	Active

Engineering Selection Recommendations

Direct Substitutes (Identical Electrical and Mechanical Specifications):

The E-Switch KAP1110E is the closest functional equivalent to the 435802-8. Both components feature identical SPST circuit configuration, 10-position count, 25mA current rating, 24VDC voltage rating, piano actuator type, and through-hole right-angle mounting. The KAP1110E is ROHS3 compliant and carries Active product status, providing improved regulatory alignment compared to the RoHS non-compliant 435802-8. The primary difference is mechanical life specification (2,000 cycles versus 7,000 cycles) and operating temperature range (-40°C to 85°C versus -55°C to 105°C). The KAP1110E is suitable for applications where extended temperature operation below -40°C is not required.

Substitutes with Higher Electrical Ratings (Upward Compatible):

The Grayhill 78B10ST, 78B10T, 78RB10ST, and 78RB10T series provide 150mA current rating and 30VDC voltage rating, both exceeding the 435802-8 specifications. These components are directly substitutable from an electrical standpoint and provide design margin. All four variants feature 10-position SPST configuration, 0.100" pitch, and through-hole mounting. The primary design consideration is actuator type (slide versus piano) and actuator level (raised versus flush/recessed), which affect PCB layout and user interface ergonomics. The 78B10ST and 78RB10ST variants include tape seal features and washable construction. All Grayhill variants are ROHS3 compliant with Active product status.

Substitutes with Different Voltage Ratings (Application-Dependent):

The TE Connectivity 2-5435668-8 and C&K BD10 operate at 5VDC and are not substitutable for 24VDC applications. These components are listed in the substitute database but require application voltage compatibility verification before selection.

Product Status Considerations:

The TE Connectivity 2-5435668-8 carries Last Time Buy status, indicating discontinued production with limited remaining inventory (5,627 pieces). This part should not be selected for new designs or long-term production requirements. All other substitute options maintain Active product status.

Compliance Considerations:

The 435802-8 is RoHS non-compliant. All identified substitute parts (KAP1110E, 2-5435668-8, 78B10ST, 78B10T, 78RB10ST, 78RB10T, BD10) are ROHS3 compliant, supporting regulatory requirements for new product designs and markets with RoHS mandates.

Frequently Asked Questions (FAQ)

Q: Can the E-Switch KAP1110E replace the TE Connectivity 435802-8 in all applications?

A: The KAP1110E is electrically and mechanically equivalent for applications operating within -40°C to 85°C temperature range. The 435802-8 supports extended operation to -55°C and 105°C. If your application requires operation outside the -40°C to 85°C window, the KAP1110E is not suitable. Additionally, the KAP1110E specifies 2,000 mechanical and electrical cycles compared to 7,000 cycles for the 435802-8; verify cycle requirements for your application.

Q: What is the difference between the Grayhill 78B10ST and 78B10T variants?

A: Both parts are electrically identical with 150mA 30VDC SPST 10-position configuration. The 78B10ST includes tape seal and washable construction features, while the 78B10T does not. The 78B10ST is suitable for applications requiring moisture resistance or cleaning processes. Both variants feature raised actuator level and are ROHS3 compliant with Active product status.

Q: Can I use the Grayhill 78RB10 series as a substitute for the 435802-8?

A: Yes, the 78RB10ST and 78RB10T are electrically substitutable with higher current (150mA) and voltage (30VDC) ratings. The primary design difference is actuator level: the 78RB10 series features flush/recessed actuator positioning compared to the raised piano actuator of the 435802-8. This affects PCB layout height and user interface ergonomics. Verify that your PCB layout accommodates the 0.265" height above board specification (versus 0.290" for the 435802-8).

Q: Why is the C&K BD10 listed as a substitute if it operates at 5VDC?

A: The BD10 is listed in the substitute database based on mechanical compatibility (10-position SPST, 0.100" pitch, through-hole mounting). However, the 5VDC rating is not compatible with 24VDC applications. The BD10 is suitable only for applications operating at 5VDC or lower. Do not select the BD10 for 24VDC circuits.

Q: What does "Last Time Buy" status mean for the TE Connectivity 2-5435668-8?

A: Last Time Buy indicates that the manufacturer has discontinued production and will not accept new orders after a specified date. Existing inventory (5,627 pieces) is available for purchase, but supply is finite and will be exhausted. This part should not be selected for new product designs or applications requiring long-term component availability. Select an Active status part for production designs.

Q: Are all substitute parts RoHS compliant?

A: Yes, all identified substitute parts (KAP1110E, 2-5435668-8, 78B10ST, 78B10T, 78RB10ST, 78RB10T, BD10) are ROHS3 compliant. The original 435802-8 is RoHS non-compliant. If your application or market requires RoHS compliance, select any of the substitute options.

Q: What is the significance of contact material differences (copper alloy versus phosphor bronze)?

A: Both copper alloy and phosphor bronze with gold finish provide equivalent electrical performance for low-current SPST switching applications. Phosphor bronze (used in KAP1110E and BD10) offers slightly improved mechanical durability and corrosion resistance. Copper alloy (used in 435802-8 and Grayhill variants) is standard for general-purpose DIP switches. For most applications, either material is acceptable.

Q: Can I substitute a slide actuator switch for the piano actuator 435802-8?

A: Slide actuator switches (Grayhill 78 series, C&K BD10) are electrically substitutable but require PCB layout verification. The primary design considerations are actuator geometry, height above board, and user interface ergonomics. Piano actuators provide perpendicular actuation, while slide actuators require lateral movement. Verify that your PCB layout and enclosure design accommodate the different actuator type before selection.

Q: What is the pitch specification and why is it important?

A: Pitch is the center-to-center distance between adjacent switch positions, specified as 0.100" (2.54mm) for all listed parts. This standard pitch ensures compatibility with 0.1-inch grid PCB layouts. All substitute parts maintain this pitch specification, ensuring direct PCB footprint compatibility.

Q: How do I determine if a substitute part is suitable for my application?

A: Verify the following parameters against your application requirements: (1) Circuit configuration (SPST), (2) Number of positions (10), (3) Current rating (minimum 25mA), (4) Voltage rating (minimum 24VDC), (5) Operating temperature range (verify your application range is within the part's specification), (6) Mechanical life cycles (verify your application cycle count), (7) Mounting type (through-hole compatibility), and (8) Actuator type (verify PCB layout compatibility). All listed substitute parts meet the first four criteria; verify criteria 5-8 for your specific application.

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