D3501N Equivalent & Substitute Parts

Part Overview

The D3501N is a telecom relay manufactured by TE Connectivity Potter & Brumfield Relays, configured as a DPDT (2 Form C) surface mount component with a 3VDC coil voltage and 2A contact rating. This part is classified as obsolete, necessitating identification of active equivalent components for new designs and ongoing production requirements. The D3501N operates across a wide temperature range of -55°C to 85°C and features palladium, ruthenium, and gold contact materials suitable for telecom switching applications.

Substiute Parts

D3501N

TE Connectivity Potter & Brumfield RelaysIn Stock: 1122D3501N Datasheet

Current PartRFQ

TX2SS-3V

Panasonic Electric WorksIn Stock: 2313TX2SS-3V Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the D3501N is determined by strict equivalence across the following critical parameters: coil voltage (3VDC), contact form (DPDT), contact rating (2A), mounting type (surface mount), termination style (gull wing), and coil type (non-latching). The TX2SS-3V manufactured by Panasonic Electric Works satisfies all mandatory substitution criteria. Both parts operate at identical coil voltage and must-operate/must-release voltage thresholds, maintain the same contact form and current rating, and employ identical surface mount gull wing termination. The substitute part is classified as active product status, ensuring continued availability and supply chain support.

Parameter Comparison

Engineering Selection Recommendations

The TX2SS-3V is a direct functional equivalent for the obsolete D3501N. Both components share identical electrical specifications for coil voltage, contact configuration, current rating, and voltage thresholds. The TX2SS-3V offers the advantage of active product status, ensuring long-term availability and supply chain continuity. The substitute part demonstrates faster switching characteristics (4 ms operate and release time versus 5 ms), lower coil current draw (46.7 mA versus 100 mA), and full sealing for enhanced environmental protection. The TX2SS-3V is ROHS3 compliant, supporting modern regulatory requirements. Both parts maintain REACH unaffected status and identical ECCN classification. The operating temperature range of the TX2SS-3V (-40°C to 85°C) covers the upper portion of the D3501N range; applications requiring operation below -40°C require evaluation of alternative solutions. Contact material differences (silver/gold versus palladium/ruthenium/gold) do not preclude substitution within the specified electrical parameters.

Frequently Asked Questions (FAQ)

Q: Can the TX2SS-3V directly replace the D3501N in existing designs?

A: Yes. Both components share identical coil voltage (3VDC), contact form (DPDT), current rating (2A), mounting type (surface mount), and termination style (gull wing). Electrical performance is equivalent across all critical switching parameters.

Q: What are the differences in operating temperature ranges?

A: The D3501N operates from -55°C to 85°C, while the TX2SS-3V operates from -40°C to 85°C. Applications requiring operation below -40°C must use the D3501N or identify alternative components rated for lower temperatures.

Q: How do the coil current specifications differ?

A: The D3501N draws 100 mA coil current, while the TX2SS-3V draws 46.7 mA. The lower current draw of the TX2SS-3V reduces power consumption and heat generation in the control circuit.

Q: Are there packaging differences between these parts?

A: The D3501N packaging is specified as dash (-), while the TX2SS-3V is supplied in tube packaging. Both employ identical surface mount gull wing termination suitable for automated assembly.

Q: What is the significance of the seal rating difference?

A: The TX2SS-3V is rated as sealed-fully, providing enhanced protection against moisture and environmental contamination. The D3501N seal rating is not specified. The TX2SS-3V is suitable for applications requiring sealed relay performance.

Q: Do the contact material differences affect substitution?

A: Contact materials differ (D3501N uses palladium/ruthenium/gold; TX2SS-3V uses silver/gold), but both compositions are suitable for telecom switching applications within the specified 2A current rating and 220VDC maximum switching voltage.

Q: Is the TX2SS-3V compliant with modern regulatory standards?

A: Yes. The TX2SS-3V is ROHS3 compliant and REACH unaffected, supporting current regulatory requirements. Both parts share identical ECCN (EAR99) classification.

Q: What is the inventory status for these parts?

A: The D3501N is obsolete with 1039 pieces in stock. The TX2SS-3V is active product with 2300 pieces in stock, ensuring continued availability for new production.