DPL04U Equivalent & Substitute Parts

Part Overview

The DPL04U is a 4-position DIP switch manufactured by APEM Inc., featuring a piano actuator with SPST circuit configuration rated for 50mA at 24VDC. This component is classified as obsolete, which necessitates identification of equivalent substitute parts for ongoing design requirements and production continuity. The DPL04U is designed for through-hole, right-angle mounting applications with PC pin termination and gold-plated phosphor bronze contacts.

Substiute Parts

DPL04U

APEM Inc.In Stock: 1257DPL04U Datasheet

Current PartRFQ

NDPL-04-V

APEM Inc.In Stock: 1037NDPL-04-V Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the DPL04U is determined by the following critical parameters that must remain constant or be compatible with the original design:

• Circuit Configuration: SPST topology must be maintained
• Position Count: 4-position requirement
• Voltage Rating: 24VDC operation
• Actuator Type: Piano actuator with raised level
• Mounting Configuration: Through-hole, right-angle orientation with PC pin termination
• Pitch Spacing: 0.100" (2.54mm) full pitch for PCB compatibility
• Operating Temperature: -20°C to 70°C range

The NDPL-04-V qualifies as a substitute based on matching all critical parameters. However, the current rating differs: the NDPL-04-V is rated for 25mA versus the DPL04U's 50mA. This substitution is valid only when the application current requirement does not exceed 25mA.

Parameter Comparison

Engineering Selection Recommendations

The NDPL-04-V is the primary substitute for the obsolete DPL04U. Both components are manufactured by APEM Inc. and share identical mechanical and electrical specifications with one exception: current rating.

Selection Criteria:

• Use NDPL-04-V when: Application current requirement is 25mA or less. The NDPL-04-V is active in production, ensuring long-term availability and supply chain continuity. Both parts maintain ROHS3 compliance and identical operating temperature ranges.

• Current Rating Consideration: The DPL04U supports 50mA operation. If the application requires current handling above 25mA, the NDPL-04-V is not suitable. In such cases, alternative 4-position SPST DIP switches from APEM Inc. or other manufacturers with 50mA or higher ratings must be evaluated.

The NDPL-04-V's active product status provides superior long-term availability compared to the obsolete DPL04U.

Frequently Asked Questions (FAQ)

Q: Can the NDPL-04-V directly replace the DPL04U in all applications?

A: Direct replacement is valid only if the application current requirement does not exceed 25mA. The NDPL-04-V has a lower current rating (25mA) than the DPL04U (50mA). PCB layout compatibility is identical due to matching pitch, height, and mounting configuration.

Q: What is the primary difference between these two parts?

A: The current rating differs. The DPL04U is rated for 50mA, while the NDPL-04-V is rated for 25mA. All other electrical and mechanical parameters are identical.

Q: Are both parts RoHS compliant?

A: Yes, both the DPL04U and NDPL-04-V are ROHS3 compliant.

Q: What is the pitch spacing, and does it affect PCB compatibility?

A: Both parts have a 0.100" (2.54mm) full pitch. This standard spacing ensures PCB footprint compatibility between the two components.

Q: Why is the DPL04U classified as obsolete?

A: The DPL04U is listed as obsolete by the manufacturer. The NDPL-04-V is the active production equivalent from APEM Inc. and should be used for new designs and ongoing production requirements.

Q: Are the operating temperature ranges the same?

A: Yes, both parts operate across the identical temperature range of -20°C to 70°C.

Q: What is the mechanical life specification?

A: The DPL04U specifies 5,000 mechanical cycles. The NDPL-04-V does not provide a published mechanical life specification in the available data.