D3207 Telecom Relay DPDT 2A 4V Equivalent & Substitute Parts

Part Overview

The D3207 is a telecom-grade DPDT (2 Form C) relay manufactured by TE Connectivity Potter & Brumfield Relays, designed for through-hole mounting applications requiring 4VDC coil operation and 2A contact switching capacity. This component operates across a wide temperature range of -40°C to 85°C and features palladium, ruthenium, and gold contact materials optimized for telecom applications.

The D3207 carries an obsolete product status. Identifying equivalent substitute parts ensures design continuity, maintains supply chain reliability, and supports long-term system maintenance and production requirements.

Substiute Parts

D3207

TE Connectivity Potter & Brumfield RelaysIn Stock: 917D3207 Datasheet

Current PartRFQ

V23079A2016B301

TE Connectivity Potter & Brumfield RelaysIn Stock: 818V23079A2016B301 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the D3207 is determined by strict equivalence across the following critical parameters:

Mandatory Matching Parameters:

• Coil Voltage: 4VDC
• Contact Form: DPDT (2 Form C)
• Contact Rating (Current): 2 A
• Switching Voltage: 250VAC, 220VDC - Max
• Coil Current: 35 mA
• Coil Resistance: 114 Ohms
• Mounting Type: Through Hole
• Termination Style: PC Pin
• Operating Temperature Range: -40°C ~ 85°C
• Coil Type: Non Latching

The V23079A2016B301 satisfies all mandatory matching parameters and qualifies as a direct substitute. This part maintains identical electrical specifications, mechanical mounting characteristics, and thermal operating envelope. The transition from telecom-specific relay classification to general-purpose relay classification does not affect functional compatibility within the specified parameter constraints.

Parameter Comparison

Engineering Selection Recommendations

The V23079A2016B301 is the qualified substitute for the obsolete D3207 relay based on the following engineering criteria:

Product Status Alignment: The D3207 is classified as obsolete, creating supply discontinuity risk. The V23079A2016B301 maintains active product status with documented inventory availability, ensuring long-term procurement viability.

Electrical Equivalence: All critical electrical parameters match exactly: 4VDC coil voltage, 2A contact rating, 114-ohm coil resistance, 35mA coil current, and identical switching voltage specifications. The minor variations in must-operate voltage (3VDC versus 2.8VDC) and release time (4ms versus 3ms) remain within acceptable engineering tolerances for non-latching relay applications.

Mechanical Compatibility: Both relays employ identical through-hole mounting with PC pin termination, ensuring direct PCB footprint compatibility without layout modifications.

Regulatory Compliance: The V23079A2016B301 carries RoHS compliance certification, supporting modern manufacturing and environmental regulatory requirements. The D3207 compliance status is not specified.

Thermal Performance: Operating temperature range remains constant at -40°C to 85°C across both parts, maintaining thermal design margins.

Contact Material Consideration: The D3207 employs palladium, ruthenium, and gold contact materials, while the V23079A2016B301 uses silver nickel and gold. Both material compositions support the specified 250VAC and 220VDC maximum switching voltages and 2A current rating.

Frequently Asked Questions (FAQ)

Q: Can the V23079A2016B301 directly replace the D3207 in existing designs?

A: Yes. The V23079A2016B301 matches all mandatory electrical and mechanical parameters of the D3207. Both relays feature identical 4VDC coil voltage, DPDT contact configuration, 2A current rating, through-hole mounting, and PC pin termination. Direct PCB substitution is supported without circuit redesign.

Q: What is the significance of the higher must-operate voltage in the V23079A2016B301?

A: The V23079A2016B301 specifies a must-operate voltage of 3VDC compared to the D3207's 2.8VDC. This indicates the substitute requires slightly higher coil voltage to guarantee relay closure. In applications where coil voltage remains at or above 3VDC, this difference has no functional impact. Applications operating near the 2.8VDC threshold require circuit verification.

Q: Does the 1ms difference in release time affect circuit performance?

A: The V23079A2016B301 specifies a 4ms release time versus the D3207's 3ms release time. This 1ms difference is negligible in most telecom and general-purpose switching applications. Applications with strict timing requirements below 4ms release time should evaluate this parameter against specific circuit demands.

Q: Are there packaging differences between these relays?

A: Yes. The D3207 is supplied in bulk packaging, while the V23079A2016B301 is supplied in tube packaging. Both formats contain identical relay components. Tube packaging provides improved component protection during storage and handling. No functional differences exist between packaging formats.

Q: What contact material differences exist, and do they affect performance?

A: The D3207 uses palladium, ruthenium, and gold contact materials, while the V23079A2016B301 uses silver nickel and gold. Both material compositions support the specified 250VAC and 220VDC maximum switching voltages and 2A current rating. Contact material selection reflects different manufacturing processes but does not affect electrical performance within the specified operating parameters.

Q: Why is RoHS compliance important for the V23079A2016B301?

A: RoHS (Restriction of Hazardous Substances) compliance indicates the V23079A2016B301 meets environmental and regulatory standards for lead-free manufacturing. The D3207 compliance status is not specified. RoHS compliance supports modern manufacturing requirements and regulatory alignment in applications subject to environmental directives.

Q: Are both relays suitable for telecom applications?

A: Yes. The D3207 is classified as a telecom-specific relay, while the V23079A2016B301 is classified as a general-purpose relay. Both relays meet the electrical and thermal specifications required for telecom switching applications. The general-purpose classification of the V23079A2016B301 does not restrict its use in telecom environments.

Q: What is the coil resistance specification, and why is it important?

A: Both relays specify 114-ohm coil resistance. This parameter determines coil current draw (35mA at 4VDC) and is critical for power supply design and circuit protection calculations. Identical coil resistance ensures equivalent power consumption and driver circuit compatibility.