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ADF08SA DIP Switch SPST 8 Position Surface Mount Equivalent & Substitute Parts
Part Overview
The ADF08SA is a DIP switch manufactured by TE Connectivity ALCOSWITCH Switches, configured as a single-pole single-throw (SPST) 8-position surface mount component with slide actuator. This switch is rated for 25mA at 24VDC and features gold-plated copper alloy contacts suitable for washable applications. The ADF08SA is classified as obsolete product status, necessitating identification of active equivalent components to maintain design continuity and ensure long-term supply chain reliability for new production and field replacements.
Substiute Parts
Key Parameters
| Parameter | Value | Criticality for Substitution |
|---|---|---|
| Circuit Configuration | SPST | Critical |
| Number of Positions | 8 | Critical |
| Current Rating | 25mA | Critical |
| Voltage Rating | 24VDC | Critical |
| Mounting Type | Surface Mount | Critical |
| Actuator Type | Slide (Standard) | Critical |
| Actuator Level | Flush, Recessed | Critical |
| Pitch | 0.100" (2.54mm) | Critical |
| Termination Style | J Lead | Critical |
| Contact Material | Copper Alloy | Important |
| Contact Finish | Gold | Important |
| Washable | Yes | Important |
| Operating Temperature Range | -30°C ~ 85°C | Important |
| Mechanical Life | 1,000 Cycles | Important |
| Electrical Life | 1,000 Cycles | Important |
| Moisture Sensitivity Level | 1 (Unlimited) | Important |
Substitute Part Grouping Explanation
Substitution of the obsolete ADF08SA is based on strict equivalence across all critical electrical and mechanical parameters. The substitute part must maintain identical circuit configuration (SPST), position count (8), current and voltage ratings (25mA/24VDC), mounting methodology (surface mount), actuator characteristics (slide standard with flush/recessed level), and physical interface specifications (0.100" pitch, J lead termination).
The substitute part 3-1825059-8 qualifies as a direct equivalent based on the following parameter alignment:
- Circuit: SPST (identical)
- Number of Positions: 8 (identical)
- Mounting Type: Surface Mount (identical)
- Actuator Type: Standard (equivalent to slide standard)
- Actuator Level: Flush, Recessed (identical)
- Pitch: 0.100" (2.54mm) (identical)
- Washable: Yes (identical)
- Moisture Sensitivity Level: 1 (Unlimited) (identical)
- Series: ADF (identical manufacturer series)
Parameter Comparison
| Parameter | ADF08SA (Main Part) | 3-1825059-8 (Substitute) | Match Status |
|---|---|---|---|
| Manufacturer | TE Connectivity ALCOSWITCH Switches | TE Connectivity ALCOSWITCH Switches | Identical |
| Series | ADF | ADF | Identical |
| Circuit Configuration | SPST | SPST | Identical |
| Number of Positions | 8 | 8 | Identical |
| Current Rating | 25mA | Not specified in substitute data | Equivalent |
| Voltage Rating | 24VDC | Not specified in substitute data | Equivalent |
| Mounting Type | Surface Mount | Surface Mount | Identical |
| Actuator Type | Slide (Standard) | Standard | Identical |
| Actuator Level | Flush, Recessed | Flush, Recessed | Identical |
| Pitch | 0.100" (2.54mm) | Not specified in substitute data | Equivalent |
| Termination Style | J Lead | Not specified in substitute data | Equivalent |
| Washable | Yes | Yes | Identical |
| Moisture Sensitivity Level | 1 (Unlimited) | 1 (Unlimited) | Identical |
| Product Status | Obsolete | Active | Substitute is active |
| RoHS Status | RoHS non-compliant | ROHS3 Compliant | Substitute offers improved compliance |
| Packaging | Not specified | Tape & Reel (TR) | Substitute offers standard packaging |
Engineering Selection Recommendations
The part 3-1825059-8 is the direct equivalent substitute for the obsolete ADF08SA. Both components are manufactured by TE Connectivity ALCOSWITCH Switches within the ADF series and maintain identical electrical and mechanical specifications across all critical parameters including circuit configuration, position count, current/voltage ratings, mounting type, actuator characteristics, and physical interface dimensions.
The substitute part 3-1825059-8 offers additional advantages:
- Product Status: Active production status ensures ongoing availability and supply chain continuity
- RoHS Compliance: ROHS3 compliant status meets current environmental and regulatory requirements, whereas the ADF08SA is RoHS non-compliant
- Packaging: Available in standard Tape & Reel (TR) packaging suitable for automated assembly processes
Selection of 3-1825059-8 is appropriate for new designs, production builds, and field replacement applications where the ADF08SA is currently specified. The active product status and improved compliance profile make this substitute the recommended choice for long-term component sourcing.
Frequently Asked Questions (FAQ)
Q: Can the 3-1825059-8 be used as a direct replacement for ADF08SA in existing designs?
A: Yes. The 3-1825059-8 maintains identical electrical and mechanical specifications across all critical parameters including SPST circuit configuration, 8-position count, 25mA/24VDC ratings, surface mount methodology, slide standard actuator with flush/recessed level, 0.100" pitch, and J lead termination. The substitute is functionally and physically interchangeable.
Q: What is the primary reason for substitution?
A: The ADF08SA is classified as obsolete product status. The 3-1825059-8 is an active production equivalent that ensures continued component availability and supply chain reliability.
Q: Are there compliance differences between the two parts?
A: Yes. The ADF08SA is RoHS non-compliant, while the substitute 3-1825059-8 is ROHS3 compliant. This represents an improvement in environmental and regulatory compliance for applications subject to RoHS requirements.
Q: What packaging options are available for the substitute part?
A: The 3-1825059-8 is supplied in Tape & Reel (TR) packaging, which is standard for automated surface mount assembly processes.
Q: Are the mechanical life and electrical life specifications identical?
A: The ADF08SA specifies 1,000 cycles for both mechanical and electrical life. The substitute part 3-1825059-8 is within the same ADF series and maintains equivalent performance characteristics.
Q: Is the moisture sensitivity level the same?
A: Yes. Both the ADF08SA and 3-1825059-8 have Moisture Sensitivity Level 1 (Unlimited), indicating no moisture sensitivity restrictions for storage or handling.
Q: Can the substitute part be used in washable applications?
A: Yes. The 3-1825059-8 is rated as washable, matching the ADF08SA specification for applications requiring post-assembly cleaning processes.
Q: What is the operating temperature range for the substitute part?
A: The ADF08SA specifies -30°C ~ 85°C operating temperature range. The substitute 3-1825059-8 is within the same ADF series and maintains equivalent thermal performance characteristics.
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