ADE04 Equivalent & Substitute Parts

Part Overview

The ADE04 is a DIP slide switch manufactured by TE Connectivity ALCOSWITCH Switches, configured as a 4-position SPST (Single Pole Single Throw) through-hole component rated for 100mA at 24VDC. The part features a raised slide actuator with gold-plated copper alloy contacts and operates across a temperature range of -30°C to 85°C. The ADE04 is classified as obsolete, necessitating identification of equivalent and substitute components for new designs and ongoing production requirements. Active alternatives from TE Connectivity and other manufacturers provide functional equivalence with improved availability and compliance status.

Key Parameters

Parameter	Value
Circuit Configuration	SPST
Number of Positions	4
Current Rating	100mA
Voltage Rating	24VDC
Actuator Type	Slide (Standard)
Mounting Type	Through Hole
Termination Style	PC Pin
Pitch	0.100" (2.54mm)
Contact Material	Copper Alloy / Beryllium Copper
Contact Finish	Gold
Mechanical Life	1,000 - 2,000 Cycles
Electrical Life	1,000 - 2,000 Cycles

Substitute Part Grouping Explanation

Substitution of the ADE04 is determined by strict equivalence across electrical and mechanical parameters. The primary substitution criteria are:

Electrical Compatibility: Circuit configuration (SPST), number of positions (4), current rating (100mA minimum), and voltage rating (24VDC or higher).

Mechanical Compatibility: Through-hole mounting, PC pin termination, 0.100" (2.54mm) pitch, and slide actuator type.

Physical Fit: Height above board, length, and actuator level (raised or flush) determine board layout compatibility.

Substitute parts are grouped into two categories:

Direct Equivalent (1825057-3): Identical electrical and mechanical specifications to the ADE04, manufactured by TE Connectivity. This part maintains the same series lineage and provides direct form-fit-function replacement with improved product status and RoHS3 compliance.

Functional Equivalents (SD04H0BD, SD04H0B, SD04H1B, 35-964): Parts meeting or exceeding the ADE04's electrical requirements with compatible mechanical interfaces. These substitutes may differ in contact material, actuator level, body material, or lifecycle ratings while maintaining functional compatibility in the target application.

Parameter Comparison

Parameter	ADE04	1825057-3	SD04H0BD	SD04H0B	SD04H1B	35-964
Manufacturer	TE Connectivity	TE Connectivity	C&K	C&K	C&K	GC Electronics
Circuit	SPST	SPST	SPST	SPST	SPST	SPST
Positions	4	4	4	4	4	4
Current Rating	100mA	100mA	100mA	100mA	100mA	100mA
Voltage Rating	24VDC	24VDC	25VDC	25VDC	25VDC	5VDC
Actuator Type	Slide (Standard)	Slide (Standard)	Slide (Standard)	Slide (Standard)	Slide (Standard)	Slide (Standard)
Actuator Level	Raised	Raised	Flush, Recessed	Flush, Recessed	Raised	Raised
Mounting Type	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole
Termination Style	PC Pin	PC Pin	PC Pin	PC Pin	PC Pin	PC Pin
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)
Contact Material	Copper Alloy	Copper Alloy	Beryllium Copper	Beryllium Copper	Beryllium Copper	Not Specified
Contact Finish	Gold	Gold	Gold	Gold	Gold	Not Specified
Height Above Board	0.232" (5.90mm)	0.228" (5.80mm)	0.168" (4.27mm)	0.178" (4.52mm)	0.178" (4.52mm)	Not Specified
Length	0.478" (12.14mm)	0.478" (12.14mm)	0.458" (11.63mm)	0.458" (11.63mm)	0.458" (11.63mm)	Not Specified
Mechanical Life	1,000 Cycles	1,000 Cycles	2,000 Cycles	2,000 Cycles	2,000 Cycles	Not Specified
Electrical Life	1,000 Cycles	1,000 Cycles	2,000 Cycles	2,000 Cycles	2,000 Cycles	Not Specified
Operating Temperature	-30°C ~ 85°C	-30°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 85°C	Not Specified
Product Status	Obsolete	Active	Active	Active	Active	Discontinued
RoHS Status	Non-compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	Non-compliant

Engineering Selection Recommendations

Primary Recommendation: 1825057-3

The 1825057-3 is the preferred substitute for the obsolete ADE04. Manufactured by TE Connectivity ALCOSWITCH Switches, this part provides direct electrical and mechanical equivalence with identical circuit configuration, position count, current rating, and voltage rating. The 1825057-3 maintains the same series heritage as the ADE04 while offering active product status and ROHS3 compliance. Physical dimensions are nearly identical (height difference of 0.004", length identical), ensuring compatibility with existing PCB layouts designed for the ADE04. This part is available in higher inventory quantities (2,910 units) and is packaged in tube format.

Secondary Recommendations: SD04H0B, SD04H0BD, SD04H1B

The C&K SD series parts (SD04H0B, SD04H0BD, SD04H1B) provide functional equivalence with enhanced electrical and mechanical lifecycle ratings (2,000 cycles versus 1,000 cycles). These parts exceed the ADE04's voltage specification (25VDC versus 24VDC) and feature beryllium copper contacts with superior durability. All three C&K alternatives are ROHS3 compliant and active products. Selection among these three depends on actuator level requirements: SD04H1B maintains a raised actuator level matching the ADE04, while SD04H0B and SD04H0BD feature flush, recessed actuators suitable for applications requiring lower profile components. The SD04H0BD differs from SD04H0B in washability specification and height above board (0.168" versus 0.178").

Not Recommended: 35-964

The GC Electronics 35-964 is not suitable as a substitute for the ADE04 in applications requiring 24VDC operation. This part is rated for 5VDC maximum, representing a significant voltage derating that renders it incompatible with the ADE04's 24VDC specification. Additionally, the 35-964 is discontinued at DiGi Electronics and carries RoHS non-compliance status. This part should not be considered for new designs or production transitions.

Frequently Asked Questions (FAQ)

Q: Can the 1825057-3 be used as a direct replacement for the ADE04 without PCB modifications?

A: Yes. The 1825057-3 is electrically and mechanically equivalent to the ADE04. Both parts share identical circuit configuration (SPST), position count (4), current rating (100mA), voltage rating (24VDC), actuator type (slide standard), mounting method (through hole), termination style (PC pin), and pitch (0.100"). Physical dimensions are nearly identical, with height above board differing by only 0.004" (0.228" versus 0.232"). No PCB layout modifications are required.

Q: What are the key differences between the C&K SD series substitutes and the ADE04?

A: The C&K SD series parts (SD04H0B, SD04H0BD, SD04H1B) differ from the ADE04 in the following parameters: voltage rating (25VDC versus 24VDC), contact material (beryllium copper versus copper alloy), body material (polyphthalamide versus polyphenylene sulfide), mechanical and electrical lifecycle (2,000 cycles versus 1,000 cycles), and operating temperature range (-40°C to 85°C versus -30°C to 85°C). These differences represent enhancements in durability and environmental performance. Actuator level varies: SD04H1B is raised (matching ADE04), while SD04H0B and SD04H0BD are flush/recessed.

Q: Are there packaging differences between substitute parts?

A: Yes. The ADE04 is supplied without specified packaging. The 1825057-3 is packaged in tube format. The C&K SD series parts (SD04H0B, SD04H0BD, SD04H1B) are also packaged in tube format. The GC Electronics 35-964 has unspecified packaging. Tube packaging is standard for DIP switches and does not affect component functionality or PCB assembly compatibility.

Q: Why is the 35-964 listed as a substitute if it is not recommended?

A: The 35-964 is included in the substitute list based on shared mechanical and circuit characteristics (SPST, 4-position, 100mA, slide actuator, through-hole mounting, PC pin termination, 0.100" pitch). However, the 5VDC voltage rating is incompatible with the ADE04's 24VDC specification. This part is suitable only for applications designed for 5VDC operation and should not be used in circuits requiring 24VDC switching.

Q: What is the impact of different actuator levels (raised versus flush/recessed) on substitution?

A: Actuator level affects the height above the PCB and the physical accessibility of the switch. The ADE04 and 1825057-3 feature raised actuators (0.232" and 0.228" height respectively), providing easy manual access. The C&K SD04H0B and SD04H0BD feature flush, recessed actuators with lower heights (0.178" and 0.168" respectively), suitable for space-constrained applications. The C&K SD04H1B maintains a raised actuator (0.178" height). Selection depends on available PCB clearance and operator access requirements. Flush actuators are not interchangeable with raised actuators in applications where actuator accessibility is critical.

Q: Are all substitute parts RoHS compliant?

A: No. The ADE04 is RoHS non-compliant. The 1825057-3 and all C&K SD series parts (SD04H0B, SD04H0BD, SD04H1B) are ROHS3 compliant. The GC Electronics 35-964 is RoHS non-compliant. For applications subject to RoHS requirements, the 1825057-3 or C&K SD series parts are required.

Q: What is the significance of the 2,000-cycle lifecycle rating on C&K substitutes versus the 1,000-cycle rating on the ADE04?

A: The C&K SD series parts provide double the mechanical and electrical lifecycle (2,000 cycles versus 1,000 cycles), indicating enhanced durability and extended operational life. This improvement is relevant for applications with frequent switch actuation. For applications with infrequent switching, the 1,000-cycle rating of the ADE04 and 1825057-3 is typically sufficient. The higher lifecycle rating of C&K parts does not create incompatibility; it represents a performance enhancement.

Q: Can the SD04H0BD be used in applications requiring washable components?

A: No. The SD04H0BD is specified as not washable, while the ADE04 and other substitutes (1825057-3, SD04H0B, SD04H1B) are washable. For applications requiring post-assembly washing or cleaning processes, the SD04H0BD is not suitable. The SD04H0B or SD04H1B should be selected instead, both of which are washable and feature tape seal protection.

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