DP04T DIP Switch Piano Actuator Equivalent & Substitute Parts

Part Overview

The DP04T is a 4-position DIP switch manufactured by APEM Inc., featuring a piano actuator mechanism with SPST circuit configuration rated for 50mA at 24VDC. This component is classified as obsolete, making equivalent substitute parts necessary for ongoing production, maintenance, and new design implementations. The DP04T provides through-hole, right-angle mounting with gold-plated phosphor bronze contacts and epoxy-sealed terminals suitable for washable applications.

Substiute Parts

DP04T

APEM Inc.In Stock: 973DP04T Datasheet

Current PartRFQ

NDP-04T-V

APEM Inc.In Stock: 1038NDP-04T-V Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the DP04T is determined by the following critical parameters:

• Circuit Configuration: Must be SPST (Single Pole Single Throw)
• Number of Positions: Must be 4-position
• Voltage Rating: Must support 24VDC operation
• Mounting Type: Must be through-hole, right-angle configuration
• Pitch: Must maintain 0.100" (2.54mm) spacing for PCB compatibility
• Actuator Type: Must be piano actuator with flush/recessed actuation level

The NDP-04T-V qualifies as a substitute part based on these core parameters. However, the current rating differs at 25mA versus the original 50mA specification, which represents a functional limitation that must be evaluated against application requirements.

Parameter Comparison

Engineering Selection Recommendations

The NDP-04T-V is suitable as a substitute for the DP04T in applications where the circuit load does not exceed 25mA at 24VDC. Both components maintain ROHS3 compliance and identical MSL ratings, ensuring regulatory and environmental compatibility.

The primary selection criterion is current rating verification. Applications operating at or below 25mA can transition directly to the NDP-04T-V without PCB modifications, as mechanical and electrical interfaces are identical. Applications requiring the full 50mA rating of the original DP04T cannot use the NDP-04T-V and require alternative sourcing strategies.

The NDP-04T-V's active product status provides supply chain advantages over the obsolete DP04T, supporting long-term availability for production and field replacement scenarios.

Frequently Asked Questions (FAQ)

Q: Can the NDP-04T-V replace the DP04T in all applications?

A: No. The NDP-04T-V is rated for 25mA maximum, while the DP04T is rated for 50mA. Substitution is valid only when circuit current requirements do not exceed 25mA at 24VDC.

Q: Are the physical dimensions identical between DP04T and NDP-04T-V?

A: Yes. Both components share identical height above board (0.402"), pitch (0.100"), and through-hole right-angle mounting configuration, enabling direct PCB footprint compatibility.

Q: What is the primary advantage of using NDP-04T-V over DP04T?

A: The NDP-04T-V maintains active product status, ensuring ongoing availability and supply chain support, whereas the DP04T is classified as obsolete.

Q: Do both parts meet the same regulatory standards?

A: Yes. Both the DP04T and NDP-04T-V are ROHS3 compliant with MSL rating 1 (Unlimited), meeting identical environmental and regulatory requirements.

Q: Are there differences in contact material between these parts?

A: The DP04T specifies phosphor bronze contacts with gold finish. The NDP-04T-V contact material is not specified in available documentation, though both maintain gold finish.