NHDS04TTR DIP Switch Equivalent & Substitute Parts

Part Overview

The NHDS04TTR is a 4-position surface mount DIP switch manufactured by APEM Inc., designed for 24VDC applications with a 25mA current rating. This component features a slide actuator with gold-plated copper alloy contacts and is classified as obsolete. Due to its obsolete status, identifying functionally equivalent substitute parts is essential for ongoing system maintenance, design updates, and procurement continuity.

Substiute Parts

NHDS04TTR

APEM Inc.In Stock: 1130NHDS04TTR Datasheet

Current PartRFQ

97C04SRT

Grayhill Inc.In Stock: 167897C04SRT Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the NHDS04TTR is determined by strict alignment of the following electrical and mechanical parameters:

• Circuit configuration (SPST)
• Number of positions (4)
• Current rating (25mA)
• Voltage rating (24VDC)
• Actuator type (Slide, Standard)
• Mounting type (Surface Mount)
• Termination style (Gull Wing)
• Pitch specification (0.050", Half)
• Operating temperature range (-40°C ~ 85°C)
• Contact material and finish (Copper Alloy, Gold)
• Mechanical and electrical life ratings (1,000 Cycles)
• Regulatory compliance (ROHS3, REACH Unaffected)

The substitute part 97C04SRT from Grayhill Inc. meets all these criteria and is classified as active, providing a direct functional replacement for the obsolete NHDS04TTR.

Parameter Comparison

Engineering Selection Recommendations

The 97C04SRT from Grayhill Inc. is a direct functional equivalent to the obsolete NHDS04TTR. Both components share identical electrical specifications, mechanical dimensions, and regulatory compliance certifications. The 97C04SRT maintains active product status, ensuring long-term availability and supply chain reliability. Both parts are ROHS3 compliant and REACH unaffected, meeting current environmental and regulatory requirements. The minimal dimensional variance in height above board (0.062" versus 0.063") is within standard manufacturing tolerances and does not impact PCB layout or assembly compatibility. Selection of the 97C04SRT eliminates obsolescence risk while maintaining full functional equivalence.

Frequently Asked Questions (FAQ)

Q: Can the 97C04SRT replace the NHDS04TTR in existing designs?

A: Yes. The 97C04SRT meets all electrical and mechanical specifications of the NHDS04TTR, including circuit configuration, current and voltage ratings, actuator type, mounting method, and termination style. The components are dimensionally compatible within standard manufacturing tolerances.

Q: What is the significance of the product status difference?

A: The NHDS04TTR is classified as obsolete, indicating discontinued manufacturing and limited future availability. The 97C04SRT is active, ensuring ongoing supply and support. This makes the 97C04SRT the preferred choice for new designs and long-term system maintenance.

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

A: The NHDS04TTR uses thermoplastic material, while the 97C04SRT uses polyamide (PA) nylon. Both materials provide equivalent mechanical and environmental performance for this application. The material difference does not affect electrical function or reliability.

Q: Do both parts meet the same regulatory standards?

A: Yes. Both the NHDS04TTR and 97C04SRT are ROHS3 compliant, REACH unaffected, and carry the same ECCN (EAR99) and HTSUS classifications. They meet identical environmental and export compliance requirements.

Q: What packaging options are available for the 97C04SRT?

A: The 97C04SRT is available in Cut Tape (CT) and Digi-Reel® packaging formats, providing flexibility for both manual assembly and automated pick-and-place operations.

Q: Are the mechanical life ratings equivalent?

A: Both components specify 1,000 mechanical cycles. The NHDS04TTR also specifies 1,000 electrical cycles, while the 97C04SRT does not provide a separate electrical life specification. Both are suitable for the same duty cycle applications.