Grayhill 76PSB04 DIP Switch - Equivalent & Substitute Parts

Part Overview

The Grayhill 76PSB04 is a 4-position SPST piano DIP switch rated for 150mA at 30VDC with through-hole, right-angle mounting. This component is classified as Obsolete product status. Identifying equivalent and substitute parts is necessary to support ongoing maintenance, repair, and redesign activities for legacy systems utilizing this switch configuration.

Substiute Parts

76PSB04

Grayhill Inc.In Stock: 101576PSB04 Datasheet

Current PartRFQ

76PSB04T

Grayhill Inc.In Stock: 147976PSB04T Datasheet

DirectRFQ

435802-3

TE Connectivity ALCOSWITCH SwitchesIn Stock: 667435802-3 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the 76PSB04 are classified into two categories based on electrical and mechanical parameter alignment:

Direct Equivalent (Grayhill 76PSB04T): This substitute maintains identical electrical specifications (150mA, 30VDC, SPST, 4-position) and mechanical form factor (through-hole, right-angle, piano actuator, 0.100" pitch). The primary distinction is product status (Active vs. Obsolete) and RoHS compliance (ROHS3 Compliant vs. non-compliant). Packaging differs (Tube vs. standard).

Similar Substitute (TE Connectivity 435802-3): This substitute shares the same circuit topology (SPST, 4-position), mounting style (through-hole, right-angle), actuator type (piano, raised), pitch (0.100"), and physical length (0.480"). However, electrical ratings differ: 25mA at 24VDC versus 150mA at 30VDC. This part is suitable only for applications where the lower current and voltage ratings are acceptable. Additional differences include extended mechanical life (7,000 cycles), wider operating temperature range (-55°C to 105°C), and different body material (Polyester with glass fill).

Substitution eligibility is determined by matching: circuit configuration, number of positions, actuator type, mounting orientation, pitch, and compatibility with application voltage and current requirements.

Parameter Comparison

Engineering Selection Recommendations

For Direct Replacement (Electrical and Mechanical Compatibility):

Select Grayhill 76PSB04T when the application requires identical electrical performance (150mA, 30VDC) and mechanical form factor. This part is the preferred substitute due to Active product status and ROHS3 compliance, ensuring long-term availability and regulatory alignment. The 76PSB04T is suitable for new designs and legacy system repairs where the original 76PSB04 specifications must be maintained.

For Constrained Applications (Lower Current/Voltage Requirements):

Select TE Connectivity 435802-3 only when application requirements permit reduced electrical ratings (25mA maximum, 24VDC maximum). This substitute offers extended mechanical and electrical life (7,000 cycles) and wider operating temperature range (-55°C to 105°C), making it suitable for applications with less demanding electrical loads but potentially more severe environmental conditions. The 0.011" (0.28mm) reduction in height above board must be evaluated for PCB layout compatibility.

Compliance Considerations:

The 76PSB04T is ROHS3 compliant, supporting modern supply chain and regulatory requirements. The 435802-3 remains non-compliant but is REACH Affected. Selection should account for end-product regulatory obligations.

Frequently Asked Questions (FAQ)

Q: Can the 76PSB04T be used as a direct replacement for the 76PSB04?

A: Yes. The 76PSB04T maintains identical electrical ratings (150mA, 30VDC), circuit configuration (SPST), number of positions (4), actuator type (piano, raised), mounting style (through-hole, right-angle), and pitch (0.100"). The primary differences are product status (Active vs. Obsolete) and RoHS compliance (ROHS3 vs. non-compliant). No circuit redesign is required.

Q: What are the limitations of using the TE Connectivity 435802-3 as a substitute?

A: The 435802-3 has reduced electrical ratings: 25mA maximum current versus 150mA, and 24VDC maximum voltage versus 30VDC. It is suitable only for applications where these lower ratings are acceptable. Additionally, the height above board is 0.290" compared to 0.301", which may affect PCB layout in space-constrained designs. Verify application current and voltage requirements before selection.

Q: Are there packaging differences between the 76PSB04 and 76PSB04T?

A: Yes. The 76PSB04 is supplied in standard packaging, while the 76PSB04T is supplied in Tube packaging. Both are through-hole components with identical form factors and electrical specifications. Packaging selection depends on assembly process requirements and inventory management practices.

Q: What is the mechanical life difference between these parts?

A: The 76PSB04 and 76PSB04T both have 2,000 mechanical and electrical cycles. The TE Connectivity 435802-3 offers extended life at 7,000 cycles. For applications with frequent switch actuation, the 435802-3 provides longer operational life, provided electrical ratings are sufficient.

Q: How do operating temperature ranges compare?

A: The 76PSB04 and 76PSB04T operate from -40°C to 85°C. The TE Connectivity 435802-3 operates from -55°C to 105°C, providing a 15°C lower minimum and 20°C higher maximum. Select the 435802-3 for applications requiring extended temperature performance, subject to electrical rating constraints.

Q: Is the 76PSB04T suitable for new product designs?

A: Yes. The 76PSB04T is Active product status with ROHS3 compliance, making it appropriate for new designs. The original 76PSB04 is Obsolete and should not be specified for new development. Use 76PSB04T to ensure long-term component availability and regulatory compliance.