DA08T DIP Switch SPST 8-Position Equivalent & Substitute Parts

Part Overview

The DA08T is an 8-position DIP switch manufactured by APEM Inc., configured as a single-pole single-throw (SPST) switch with a 50mA current rating at 24VDC. This component features a through-hole, right-angle mounting configuration with slide actuators and gold-plated phosphor bronze contacts. The DA08T is classified as obsolete, making equivalent and substitute parts necessary for ongoing system support and new design implementations.

Substiute Parts

DA08T

APEM Inc.In Stock: 1208DA08T Datasheet

Current PartRFQ

NDA-08T-V

APEM Inc.In Stock: 794NDA-08T-V Datasheet

SimilarRFQ

78B08SRAT

Grayhill Inc.In Stock: 645478B08SRAT Datasheet

SimilarRFQ

KAS2108E

E-SwitchIn Stock: 5881KAS2108E Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the DA08T is determined by the following critical parameters: circuit configuration (SPST), number of positions (8), mounting type (through hole, right angle), pitch (0.100"), termination style (PC pin), and contact finish (gold). The current and voltage ratings establish the operational envelope within which substitutes must function.

Three substitute parts meet the core mechanical and electrical compatibility criteria:

NDA-08T-V (APEM Inc.) – Maintains identical mechanical form factor and mounting specifications. Current rating reduced to 25mA; voltage rating remains 24VDC. Active product status.

78B08SRAT (Grayhill Inc.) – Maintains identical mechanical form factor and mounting specifications. Current rating increased to 150mA; voltage rating increased to 30VDC. Active product status with extended operating temperature range (-40°C ~ 85°C).

KAS2108E (E-Switch) – Maintains identical mechanical form factor and mounting specifications. Current rating reduced to 25mA; voltage rating remains 24VDC. Active product status with extended operating temperature range (-40°C ~ 85°C).

Parameter Comparison

Engineering Selection Recommendations

NDA-08T-V – Direct mechanical and electrical substitute for applications operating at or below 25mA. Maintains identical voltage rating (24VDC) and operating temperature range. APEM Inc. active product status ensures continued availability and supply chain stability. Suitable for designs where current requirements do not exceed 25mA.

78B08SRAT – Substitute for applications requiring higher current capacity (up to 150mA) or elevated voltage operation (30VDC). Extended operating temperature range (-40°C ~ 85°C) and superior electrical life (10,000 cycles) support demanding industrial environments. Grayhill Inc. active product status with established supply chain. Height above board variance of 0.010" (0.26mm) requires PCB layout verification.

KAS2108E – Direct mechanical and electrical substitute for applications operating at or below 25mA. Extended operating temperature range (-40°C ~ 85°C) provides thermal margin for temperature-sensitive applications. E-Switch active product status ensures availability. Phosphor bronze contact material and glass-filled PBT body match DA08T specifications.

All three substitutes maintain ROHS3 compliance and MSL 1 rating, supporting regulatory and environmental requirements equivalent to the original DA08T.

Frequently Asked Questions (FAQ)

Q: Can NDA-08T-V replace DA08T in all applications? A: NDA-08T-V is mechanically and electrically compatible for applications where circuit current does not exceed 25mA. The DA08T 50mA rating exceeds NDA-08T-V capability. Circuit analysis is required to confirm current requirements.

Q: What is the primary advantage of 78B08SRAT over DA08T? A: 78B08SRAT provides higher current capacity (150mA versus 50mA), higher voltage rating (30VDC versus 24VDC), extended operating temperature range (-40°C ~ 85°C versus -20°C ~ 70°C), and superior electrical life (10,000 cycles versus 2,000 cycles). These characteristics support higher-performance and industrial-grade applications.

Q: Are there PCB layout considerations when substituting with 78B08SRAT? A: Yes. 78B08SRAT height above board is 0.380" (9.64mm) compared to DA08T 0.390" (9.90mm), a difference of 0.010" (0.26mm). PCB clearance and component spacing must be verified to ensure mechanical fit within the assembly.

Q: Do all substitute parts maintain the same pitch and termination? A: Yes. All substitute parts maintain 0.100" (2.54mm) pitch and PC pin termination, ensuring direct PCB footprint compatibility with DA08T designs.

Q: Which substitute offers the widest operating temperature range? A: Both 78B08SRAT and KAS2108E provide -40°C ~ 85°C operating range, compared to DA08T -20°C ~ 70°C. Selection depends on application thermal requirements and current/voltage specifications.

Q: Are all substitutes RoHS3 compliant? A: Yes. DA08T, NDA-08T-V, 78B08SRAT, and KAS2108E are all ROHS3 compliant with MSL 1 rating, meeting regulatory and environmental standards.