D3423 Telecom Relay DPDT 2A 5V Equivalent & Substitute Parts

Part Overview

The D3423 is a telecom-grade double-pole double-throw (DPDT) relay manufactured by TE Connectivity Potter & Brumfield Relays, designed for 5VDC coil operation with 2A contact rating. This through-hole mounted relay operates across a wide temperature range of -55°C to 85°C and features palladium, ruthenium, and gold contact materials for reliable switching performance in telecom applications.

The D3423 carries an obsolete product status. Identifying equivalent substitute parts is necessary to maintain design continuity, ensure component availability, and support ongoing production and field service requirements for systems utilizing this relay architecture.

Substiute Parts

D3423

TE Connectivity Potter & Brumfield RelaysIn Stock: 828D3423 Datasheet

Current PartRFQ

TX2-5V

Panasonic Electric WorksIn Stock: 30149TX2-5V Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the D3423 is determined by strict equivalence across the following critical parameters:

Mandatory Matching Parameters:

• Coil voltage: 5VDC
• Contact form: DPDT (2 Form C)
• Contact rating: 2 A minimum
• Mounting type: Through hole
• Termination style: PC pin
• Coil type: Non latching
• Relay classification: Telecom
• Must operate voltage: 3.75 VDC
• Must release voltage: 0.5 VDC

The TX2-5V from Panasonic Electric Works satisfies all mandatory matching parameters and qualifies as a direct functional equivalent for the D3423. Both relays operate identically within the specified electrical and mechanical constraints required for telecom relay applications.

Parameter Comparison

Engineering Selection Recommendations

The TX2-5V represents the qualified substitute for the obsolete D3423. Selection of the TX2-5V is supported by the following factors:

Product Status: The TX2-5V carries active product status from Panasonic Electric Works, ensuring ongoing availability and manufacturing support. The D3423 is obsolete, making the TX2-5V the appropriate replacement for new designs and ongoing production.

Regulatory Compliance: Both relays share identical ECCN (EAR99) and HTSUS (8536.41.0020) classifications. The TX2-5V carries RoHS3 compliance and REACH unaffected status, meeting current regulatory requirements for electronic component procurement.

Electrical Equivalence: The TX2-5V meets all mandatory electrical parameters. The substitute exhibits lower coil current (28.1 mA versus 40 mA) and faster switching times (4 ms versus 5 ms), representing performance improvements over the original design. The reduced operating temperature floor (-40°C versus -55°C) is acceptable for most telecom applications operating within standard industrial temperature ranges.

Mechanical Compatibility: Both relays employ identical through-hole mounting and PC pin termination, ensuring direct board-level compatibility without redesign.

Frequently Asked Questions (FAQ)

Q: Can the TX2-5V be used as a direct replacement for the D3423 in existing designs?

A: Yes. The TX2-5V satisfies all mandatory electrical and mechanical parameters required for D3423 substitution. Both relays operate at 5VDC with DPDT contact configuration, 2A rating, and identical must-operate and must-release voltage thresholds. Through-hole mounting and PC pin termination are identical, enabling direct board-level substitution without circuit modification.

Q: What are the differences in operating temperature range between these relays?

A: The D3423 operates from -55°C to 85°C, while the TX2-5V operates from -40°C to 85°C. The TX2-5V has a higher minimum operating temperature by 15°C. For applications requiring operation below -40°C, the D3423 specification must be retained. For standard industrial and telecom applications operating within -40°C to 85°C, the TX2-5V is fully compatible.

Q: How do the switching characteristics compare?

A: The TX2-5V exhibits faster switching performance, with operate and release times of 4 ms compared to 5 ms for the D3423. This represents a 20% improvement in switching speed. Both relays meet the same must-operate and must-release voltage thresholds (3.75 VDC and 0.5 VDC respectively), ensuring identical control circuit behavior.

Q: What is the significance of the coil current difference?

A: The TX2-5V draws 28.1 mA compared to 40 mA for the D3423, a 30% reduction in coil current. This lower current requirement results from the higher coil resistance (178 Ohms versus 125 Ohms). The reduced current consumption improves power efficiency in control circuits and reduces thermal load on driving circuitry. Both relays operate from identical 5VDC supply voltage.

Q: Are there contact material differences, and do they affect performance?

A: The D3423 uses palladium, ruthenium, and gold contact materials, while the TX2-5V uses silver and gold. Both material sets are suitable for telecom relay applications. The TX2-5V includes fully sealed construction, providing enhanced environmental protection compared to the D3423. Contact material selection does not affect electrical compatibility for the specified 2A, 220VDC switching application.

Q: What packaging is available for the TX2-5V?

A: The TX2-5V is supplied in tube packaging. The D3423 packaging specification was not provided. Confirm packaging requirements for your procurement process, as tube packaging is standard for through-hole relay distribution.

Q: Are there regulatory or compliance considerations for substitution?

A: Both relays carry identical ECCN (EAR99) and HTSUS (8536.41.0020) classifications. The TX2-5V includes RoHS3 compliance and REACH unaffected status, meeting current environmental and regulatory requirements. Both relays have MSL rating of 1 (Unlimited), indicating no moisture sensitivity constraints during storage or handling.