DPL03 Equivalent & Substitute Parts

Part Overview

The DPL03 is a piano DIP switch manufactured by APEM Inc., configured as a single-pole single-throw (SPST) switch with 3 positions. It is rated for 50mA at 24VDC and features a through-hole, right-angle mounting with PC pin termination. The DPL03 is classified as obsolete, making identification of equivalent and substitute parts necessary for ongoing system maintenance and new design implementations where this component is specified.

Substiute Parts

DPL03

APEM Inc.In Stock: 971DPL03 Datasheet

Current PartRFQ

NDPL-03-V

APEM Inc.In Stock: 861NDPL-03-V Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the DPL03 is evaluated based on the following critical parameters that must align for functional equivalence:

Mandatory Matching Parameters:

• Circuit configuration (SPST)
• Number of positions (3)
• Voltage rating (24VDC)
• Actuator type (Piano, raised level)
• Mounting type (Through hole, right angle)
• Pitch (0.100" / 2.54mm)
• Contact finish (Gold)
• Operating temperature range (-20°C to 70°C)

Allowable Variation:

• Current rating: The DPL03 is rated for 50mA. Substitute parts with lower current ratings (25mA) are acceptable for applications where the actual circuit current does not exceed the substitute part's rating. Substitute parts with equal or higher current ratings are directly compatible.

The NDPL-03-V meets all mandatory matching parameters and represents a valid substitute where circuit current requirements do not exceed 25mA.

Parameter Comparison

Engineering Selection Recommendations

The NDPL-03-V is an active product from APEM Inc. and represents the current production equivalent to the obsolete DPL03. Both parts are ROHS3 compliant and REACH unaffected, meeting modern regulatory requirements.

Selection of the NDPL-03-V as a substitute is appropriate when circuit current requirements do not exceed 25mA. The reduced current rating of the NDPL-03-V compared to the DPL03 (25mA versus 50mA) is the only electrical parameter difference. For applications where the actual operating current is within the 25mA limit, the NDPL-03-V provides full functional equivalence with the advantage of active product status and continued manufacturer support.

For applications requiring the full 50mA current capacity of the original DPL03, alternative APEM Inc. piano DIP switch models with matching mechanical and electrical specifications and higher current ratings should be evaluated.

Frequently Asked Questions (FAQ)

Q: Can the NDPL-03-V directly replace the DPL03 in all applications?

A: The NDPL-03-V is mechanically and electrically compatible with the DPL03 for applications where the circuit current does not exceed 25mA. If your application requires the full 50mA current capacity, the NDPL-03-V is not suitable.

Q: What is the primary difference between the DPL03 and NDPL-03-V?

A: The current rating differs: DPL03 is rated for 50mA, while NDPL-03-V is rated for 25mA. All other electrical and mechanical parameters are identical.

Q: Why is the DPL03 listed as obsolete?

A: The DPL03 has been discontinued by APEM Inc. The NDPL-03-V represents the current active product line for this switch configuration.

Q: Are there any physical differences between these parts?

A: Both parts share the same height above board (0.402"), pitch (0.100"), mounting type (through hole, right angle), and actuator configuration (piano, raised). The DPL03 length is 0.361" while the NDPL-03-V length is 0.350", a negligible difference that does not affect PCB layout compatibility.

Q: Do both parts meet current regulatory requirements?

A: Yes. Both the DPL03 and NDPL-03-V are ROHS3 compliant and REACH unaffected, meeting current environmental and regulatory standards.

Q: How do I determine if my application can use the NDPL-03-V?

A: Measure or calculate the maximum current that will flow through the switch in your application. If this current does not exceed 25mA, the NDPL-03-V is suitable. If your application requires currents above 25mA, consult APEM Inc. documentation for alternative models with higher current ratings.