Equivalent & Substitute Parts for Grayhill 90HBW04P DIP Switch

Part Overview

The Grayhill 90HBW04P 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 4-position slide actuator design with gold-plated copper alloy contacts provides reliable switching in applications requiring low-current DC control circuits.

Substiute Parts

90HBW04P

Grayhill Inc.In Stock: 88490HBW04P Datasheet

Current PartRFQ

90HBW04PT

Grayhill Inc.In Stock: 816390HBW04PT Datasheet

DirectRFQ

219-4LPST

CTS ElectrocomponentsIn Stock: 7014219-4LPST Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 90HBW04P is determined by the following critical parameters:

Primary Compatibility Criteria:

• Circuit configuration (SPST)
• Number of positions (4)
• Mounting type (Surface Mount)
• Termination style (Gull Wing)
• Pitch specification (0.100" / 2.54mm)
• Actuator type (Slide Standard with Flush/Recessed level)

Secondary Compatibility Criteria:

• Current rating must equal or exceed 25mA
• Voltage rating must equal or exceed 24VDC
• Operating temperature range must encompass -40°C to 85°C
• RoHS3 compliance required
• Contact finish (Gold preferred for compatibility)

Two substitute parts meet these criteria with varying degrees of parameter alignment.

Parameter Comparison

Engineering Selection Recommendations

90HBW04PT (Grayhill Inc.) - Primary Substitute

The 90HBW04PT is the direct functional equivalent of the obsolete 90HBW04P. Both parts share identical electrical ratings (25mA, 24VDC), mechanical dimensions, and contact specifications. The 90HBW04PT maintains active product status with ROHS3 compliance and REACH unaffected certification. This part is available in tube packaging with significantly higher inventory levels (8,074 pcs). Selection of 90HBW04PT eliminates all compatibility concerns and is the preferred choice for direct replacement in existing designs.

219-4LPST (CTS Electrocomponents) - Secondary Substitute

The 219-4LPST provides functional substitution with notable parameter variations. This part exceeds the current rating requirement (100mA versus 25mA) and extends the operating temperature range (-55°C to 85°C versus -40°C to 85°C). However, the voltage rating is 20VDC, which is below the 24VDC requirement of the main part. The 219-4LPST features beryllium copper contacts and superior moisture sensitivity (MSL 1 versus MSL 3). Physical height is reduced (0.160" versus 0.190"), which may require PCB layout verification. This part is suitable only for applications where the 20VDC rating is acceptable and where the reduced height does not create mechanical conflicts.

Frequently Asked Questions (FAQ)

Q: Can the 90HBW04PT be used as a direct replacement for the 90HBW04P?

A: Yes. The 90HBW04PT is electrically and mechanically identical to the 90HBW04P. Both parts feature 4-position SPST configuration, 25mA current rating, 24VDC voltage rating, and identical physical dimensions. The primary difference is product status: 90HBW04P is obsolete while 90HBW04PT is active. No design modifications are required.

Q: What are the limitations of using the 219-4LPST as a substitute?

A: The 219-4LPST has a maximum voltage rating of 20VDC, which is 4V below the 24VDC requirement. This part is suitable only for applications operating at 20VDC or lower. Additionally, the reduced height (0.160" versus 0.190") requires verification that PCB footprint and mechanical clearances remain acceptable. The beryllium copper contact material differs from the copper alloy used in the Grayhill parts.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. Both 90HBW04PT and 219-4LPST are ROHS3 compliant and REACH unaffected, meeting current environmental and regulatory requirements.

Q: What is the difference in packaging between the main part and substitutes?

A: The 90HBW04P is supplied with tape seal packaging. The 90HBW04PT is supplied in tube packaging. The 219-4LPST is also supplied in tube packaging. Tube packaging is standard for active products and does not affect component functionality.

Q: Can the 219-4LPST be used in applications requiring 24VDC operation?

A: No. The 219-4LPST is rated for maximum 20VDC operation. Using this part in a 24VDC circuit exceeds its voltage specification and may result in component failure or safety hazards.

Q: What is the mechanical life specification for these parts?

A: The 90HBW04P and 90HBW04PT both specify 2,000 mechanical cycles. The 219-4LPST does not provide a mechanical life specification in the available data.

Q: How do the moisture sensitivity levels compare?

A: The 90HBW04P and 90HBW04PT both have MSL 3 rating (168 hours). The 219-4LPST has superior MSL 1 rating (unlimited), indicating lower moisture sensitivity and reduced risk during storage and handling.