Equivalent & Substitute Parts for Grayhill 90HBW03P DIP Switch

Part Overview

The Grayhill 90HBW03P is a surface mount DIP switch with SPST (Single Pole Single Throw) configuration, rated for 25mA at 24VDC. This component is classified as obsolete, necessitating identification of equivalent and substitute parts for ongoing design support and procurement continuity. The 90HBW03P features a 3-position slide actuator with gold-plated copper alloy contacts, flush-recessed actuator level, and gull wing termination suitable for automated assembly processes.

Substiute Parts

90HBW03P

Grayhill Inc.In Stock: 111390HBW03P Datasheet

Current PartRFQ

90HBW03PT

Grayhill Inc.In Stock: 875490HBW03PT Datasheet

DirectRFQ

219-3LPST

CTS ElectrocomponentsIn Stock: 22726219-3LPST Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 90HBW03P is determined by the following critical parameters: circuit configuration (SPST), number of positions (3), mounting type (surface mount), actuator type (slide standard), termination style (gull wing), and pitch (0.100"). These parameters define the mechanical and electrical interface requirements for direct replacement.

Group 1: Direct Equivalent The 90HBW03PT from Grayhill Inc. maintains identical specifications across all critical parameters. This part differs only in packaging format (tube versus tape) and product status (active versus obsolete). The 90HBW03PT is the primary direct replacement for the 90HBW03P.

Group 2: Functional Substitute with Parameter Deviations The 219-3LPST from CTS Electrocomponents shares the same circuit configuration, number of positions, mounting type, actuator type, termination style, and pitch. However, this part operates at different electrical ratings (100mA at 20VDC versus 25mA at 24VDC) and incorporates beryllium copper contacts with epoxy sealed terminals. The 219-3LPST is suitable only for applications where the lower current and voltage ratings are acceptable.

Parameter Comparison

Engineering Selection Recommendations

Primary Selection: 90HBW03PT

The Grayhill 90HBW03PT is the recommended direct replacement for the obsolete 90HBW03P. Both parts are manufactured by Grayhill Inc., share identical electrical and mechanical specifications, and maintain full ROHS3 compliance. The 90HBW03PT is currently in active production status with substantial inventory availability (8,665 pieces), ensuring long-term procurement reliability. The only difference is packaging format (tube), which does not affect component functionality or performance.

Secondary Selection: 219-3LPST

The CTS Electrocomponents 219-3LPST is a functional substitute applicable only to applications where the electrical requirements differ from the original specification. This part accepts higher current loads (100mA versus 25mA) but operates at a lower voltage rating (20VDC versus 24VDC). The 219-3LPST incorporates beryllium copper contacts with epoxy sealed terminals, providing enhanced environmental protection. This part is suitable for redesigned circuits where the lower voltage and higher current capacity align with system requirements. The 219-3LPST maintains ROHS3 compliance and offers superior moisture sensitivity rating (MSL 1 versus MSL 3).

Frequently Asked Questions (FAQ)

Q: Can the 90HBW03PT directly replace the 90HBW03P without circuit modification?

A: Yes. The 90HBW03PT is a direct equivalent with identical electrical ratings (25mA at 24VDC), circuit configuration (SPST), mechanical dimensions, and actuator specifications. No circuit modification is required. The only difference is packaging format.

Q: What are the limitations of using the 219-3LPST as a substitute?

A: The 219-3LPST operates at 20VDC maximum versus the original 24VDC specification. Applications requiring the full 24VDC rating cannot use this part. Additionally, the 219-3LPST is rated for 100mA, which exceeds the original 25mA specification. Use this part only in circuits where both the lower voltage and higher current capacity are acceptable.

Q: Are all three parts compatible with the same PCB footprint?

A: The 90HBW03P and 90HBW03PT share identical footprints with 0.100" pitch and gull wing termination. The 219-3LPST also uses 0.100" pitch and gull wing termination, making it mechanically compatible. However, the 219-3LPST has a lower height above board (0.160" versus 0.190"), which may affect clearance in space-constrained designs.

Q: What is the difference between the tape and tube packaging options?

A: The 90HBW03P was supplied in tape format (now obsolete), while the 90HBW03PT is supplied in tube packaging. Both formats contain the same component. Tube packaging is standard for active production parts and does not affect electrical or mechanical performance.

Q: Do all substitute parts maintain RoHS3 compliance?

A: Yes. Both the 90HBW03PT and 219-3LPST are ROHS3 compliant, matching the compliance status of the original 90HBW03P. All three parts are REACH unaffected and classified under ECCN EAR99.

Q: Which substitute offers the best environmental protection?

A: The 219-3LPST provides superior environmental protection with MSL 1 (unlimited moisture sensitivity) compared to MSL 3 (168 hours) for the 90HBW03P and 90HBW03PT. The 219-3LPST also features epoxy sealed terminals in addition to tape seal, and operates across a wider temperature range (-55°C to 85°C).