ADE08 DIP Switch Equivalent & Substitute Parts

Part Overview

The ADE08 is an 8-position DIP switch manufactured by TE Connectivity ALCOSWITCH Switches, configured as a single-pole single-throw (SPST) switch with a slide actuator. The device is rated for 100mA at 24VDC and is designed for through-hole mounting on printed circuit boards. The ADE08 is classified as obsolete, making identification of equivalent and substitute parts necessary for ongoing design support, maintenance, and production continuity. Substitute parts must maintain electrical compatibility while meeting current manufacturing and compliance standards.

Key Parameters

Parameter	Value	Criticality for Substitution
Circuit Configuration	SPST	Critical
Number of Positions	8	Critical
Current Rating	100mA	Critical
Voltage Rating	24VDC	Critical
Actuator Type	Slide (Standard)	Critical
Mounting Type	Through Hole	Critical
Pitch	0.100" (2.54mm)	Critical
Termination Style	PC Pin	Critical
Operating Temperature Range	-30°C ~ 85°C	Important
Contact Material	Copper Alloy	Important
Contact Finish	Gold	Important

Substitute Part Grouping Explanation

Substitute parts for the ADE08 are identified based on strict electrical and mechanical compatibility criteria. The following parameters must match or exceed the original specification:

Critical Matching Parameters:

Circuit configuration (SPST)
Number of positions (8)
Current rating (100mA minimum)
Voltage rating (24VDC minimum)
Actuator type (Slide Standard)
Mounting type (Through Hole)
Pitch spacing (0.100" / 2.54mm)
Termination style (PC Pin)

Acceptable Variation Parameters:

Operating temperature range (may exceed original range)
Contact material (alternative alloys acceptable if performance equivalent)
Body material (alternative polymers acceptable)
Height above board (minor variations acceptable within PCB layout constraints)
Mechanical and electrical life cycles (higher values acceptable)

Substitutes are classified as either direct equivalents (same manufacturer, active product status) or similar alternatives (different manufacturer, functionally equivalent).

Parameter Comparison

Parameter	ADE08 (Main Part)	1825057-7 (Direct Equivalent)	SD08H1BD (Similar Alternative)
Manufacturer	TE Connectivity ALCOSWITCH	TE Connectivity ALCOSWITCH	C&K
Product Status	Obsolete	Active	Active
Circuit Configuration	SPST	SPST	SPST
Number of Positions	8	8	8
Current Rating (Amps)	100mA	100mA	100mA
Voltage Rating	24VDC	24VDC	25VDC
Actuator Type	Slide (Standard)	Slide (Standard)	Slide (Standard)
Actuator Level	Raised	Raised	Raised
Contact Material	Copper Alloy	Copper Alloy	Beryllium Copper
Contact Finish	Gold	Gold	Gold
Height Above Board	0.232" (5.90mm)	0.228" (5.80mm)	0.178" (4.52mm)
Mounting Type	Through Hole	Through Hole	Through Hole
Termination Style	PC Pin	PC Pin	PC Pin
Pitch	0.100" (2.54mm)	0.100" (2.54mm)	0.100" (2.54mm)
Washable	Yes	Yes	No
Operating Temperature	-30°C ~ 85°C	-30°C ~ 85°C	-40°C ~ 85°C
Body Material	Polyphenylene Sulfide (PPS)	Polyphenylene Sulfide (PPS)	Polyphthalamide (PPA)
Length	0.878" (22.30mm)	0.878" (22.30mm)	0.858" (21.80mm)
Mechanical Life	1,000 Cycles	1,000 Cycles	2,000 Cycles
Electrical Life	1,000 Cycles	1,000 Cycles	2,000 Cycles
RoHS Status	Non-compliant	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)
REACH Status	REACH Unaffected	REACH Unaffected	REACH Unaffected
Packaging	Bulk	Tube	Tube

Engineering Selection Recommendations

1825057-7 (Direct Equivalent - Recommended Primary Substitute)

The 1825057-7 is the preferred substitute for the obsolete ADE08. Both parts are manufactured by TE Connectivity ALCOSWITCH Switches and share identical electrical specifications (SPST, 8-position, 100mA, 24VDC) and mechanical dimensions. The 1825057-7 is classified as an active product with ROHS3 compliance, addressing regulatory requirements that the original ADE08 does not meet. Height above board differs by 0.004" (0.10mm), which is negligible for standard PCB layouts. The 1825057-7 is available in significantly higher inventory quantities (94,657 pieces), ensuring supply continuity.

SD08H1BD (Similar Alternative - Secondary Substitute)

The SD08H1BD manufactured by C&K is a functionally equivalent alternative when the 1825057-7 is unavailable. This part maintains the critical electrical parameters (SPST, 8-position, 100mA) and mechanical compatibility (through-hole, PC pin, 0.100" pitch). The voltage rating is 25VDC, which exceeds the 24VDC requirement and is acceptable for applications operating at 24VDC. The SD08H1BD offers enhanced mechanical and electrical life (2,000 cycles versus 1,000 cycles) and an extended operating temperature range (-40°C to 85°C). However, the SD08H1BD is not washable and has a lower profile (0.178" height), which may require PCB layout verification. ROHS3 compliance is confirmed.

Compliance Considerations

Both substitute parts are ROHS3 compliant, addressing environmental and regulatory requirements. The original ADE08 is RoHS non-compliant. Both substitutes maintain REACH Unaffected status and identical ECCN and HTSUS classifications. Moisture sensitivity level remains at MSL 1 (Unlimited) across all three parts.

Frequently Asked Questions (FAQ)

Q: Can the 1825057-7 be used as a direct replacement for the ADE08 without PCB modifications?

A: Yes. The 1825057-7 is dimensionally and electrically compatible with the ADE08. The height above board difference of 0.004" (0.10mm) is within standard PCB tolerance and does not require layout changes. Both parts use identical pitch (0.100"), termination style (PC Pin), and mounting type (Through Hole).

Q: What is the primary difference between the ADE08 and 1825057-7?

A: The primary difference is product status and compliance. The ADE08 is obsolete and RoHS non-compliant, while the 1825057-7 is an active product with ROHS3 compliance. Electrical and mechanical specifications are identical.

Q: When should the SD08H1BD be selected over the 1825057-7?

A: The SD08H1BD should be selected only when the 1825057-7 is unavailable. The SD08H1BD is a different manufacturer (C&K versus TE Connectivity) and has different body material (PPA versus PPS) and contact material (Beryllium Copper versus Copper Alloy). The lower profile (0.178" versus 0.228") requires verification against PCB clearance requirements. The SD08H1BD is not washable, which may be a constraint in certain manufacturing processes.

Q: Are there any voltage compatibility concerns with the SD08H1BD rated at 25VDC versus the ADE08 rated at 24VDC?

A: No. The SD08H1BD's 25VDC rating exceeds the 24VDC requirement and is acceptable for applications operating at 24VDC. Higher voltage ratings provide margin and do not create compatibility issues.

Q: What is the impact of the SD08H1BD's 2,000-cycle life versus the ADE08's 1,000-cycle life?

A: The SD08H1BD's extended mechanical and electrical life (2,000 cycles) exceeds the original specification and provides enhanced durability. This is a beneficial characteristic and does not create compatibility concerns.

Q: Does the washability difference between the ADE08 and SD08H1BD affect substitution?

A: Washability is a manufacturing process consideration. The ADE08 and 1825057-7 are both washable, while the SD08H1BD is not. If the PCB assembly process includes aqueous cleaning, the SD08H1BD may not be suitable. Verify manufacturing process requirements before selecting the SD08H1BD.

Q: Are there packaging differences between the substitute parts?

A: Yes. The ADE08 is supplied in bulk packaging, while both 1825057-7 and SD08H1BD are supplied in tube packaging. Tube packaging is standard for active products and does not affect electrical or mechanical performance.

Q: What compliance certifications apply to all three parts?

A: All three parts share identical REACH Unaffected status, ECCN (EAR99), and HTSUS (8536.50.9065) classifications. The 1825057-7 and SD08H1BD are both ROHS3 compliant, while the ADE08 is RoHS non-compliant. Moisture sensitivity level is MSL 1 (Unlimited) for all parts.

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