NHDS08T Equivalent & Substitute Parts

Part Overview

The NHDS08T is an 8-position surface mount DIP slide switch manufactured by APEM Inc., rated for 25mA at 24VDC with gold-plated copper alloy contacts. This component is classified as obsolete, making identification of functionally equivalent alternatives essential for ongoing system support and procurement planning. The switch features flush/recessed slide actuation, gull wing termination for surface mount assembly, and is rated for 1,000 mechanical and electrical cycles with operating temperature range of -40°C to 85°C.

Substiute Parts

NHDS08T

APEM Inc.In Stock: 735NHDS08T Datasheet

Current PartRFQ

97C08ST

Grayhill Inc.In Stock: 461497C08ST Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the NHDS08T is determined by strict equivalence across the following critical parameters:

Circuit configuration must remain SPST with 8 positions to maintain functional compatibility with existing PCB layouts and control logic. Current and voltage ratings (25mA at 24VDC) establish the electrical operating envelope and cannot be reduced. Actuator type, level, and termination style (slide standard with flush/recessed actuation and gull wing leads) are mechanical constraints tied to board assembly and user interface requirements. Contact material and finish specifications ensure electrical performance and reliability characteristics. Mounting type (surface mount) and pitch (0.050" half pitch) are PCB footprint determinants. Operating temperature range, mechanical and electrical life cycles, and compliance certifications (RoHS3, REACH Unaffected, EAR99) must be maintained or exceeded.

Parameter Comparison

Engineering Selection Recommendations

The 97C08ST from Grayhill Inc. is a direct functional equivalent to the obsolete NHDS08T. Both components meet identical electrical specifications (25mA at 24VDC, SPST 8-position configuration), mechanical requirements (surface mount gull wing termination, 0.050" half pitch), and regulatory compliance standards (RoHS3, REACH Unaffected, EAR99). The 97C08ST maintains the same operating temperature range (-40°C to 85°C) and lifecycle ratings (1,000 mechanical and electrical cycles). The height above board differential (0.063" versus 0.062") is within standard manufacturing tolerance and does not impact PCB assembly or clearance requirements. The 97C08ST is currently in active production status with established supply availability (4,545 pieces in stock), providing supply chain continuity for applications currently using the NHDS08T.

Frequently Asked Questions (FAQ)

Q: Can the 97C08ST be used as a direct replacement for the NHDS08T on existing PCBs?

A: Yes. The 97C08ST matches all critical parameters including circuit configuration, electrical ratings, actuator type, termination style, and pitch. The 0.001" height difference is within standard tolerance and does not affect assembly or operation.

Q: Are there any compliance or certification differences between these parts?

A: No. Both components are RoHS3 compliant, REACH unaffected, and classified as EAR99. MSL ratings are identical at Level 1 (unlimited moisture sensitivity).

Q: What is the difference in body material between the two parts?

A: The NHDS08T uses thermoplastic material, while the 97C08ST uses polyamide (PA) nylon. Both materials provide equivalent mechanical and electrical performance for this application.

Q: Does the packaging format affect substitution?

A: The NHDS08T is supplied in standard packaging, while the 97C08ST is supplied in tube packaging. This is a logistics consideration only and does not affect component functionality or PCB compatibility.

Q: Are the electrical life specifications equivalent?

A: The NHDS08T specifies 1,000 electrical cycles. The 97C08ST does not list a separate electrical life specification but maintains the same 1,000 mechanical cycle rating and identical electrical operating parameters.