TE Connectivity Potter & Brumfield D3012 Equivalent & Substitute Parts

Part Overview

The TE Connectivity Potter & Brumfield D3012 is a telecom relay with DPDT (2 Form C) contact configuration, rated for 2A at 24VDC coil voltage. This component is classified as obsolete, necessitating identification of equivalent substitute parts for ongoing system support and new designs. The D3012 operates within the FP2 and AXICOM series and is designed for through-hole mounting applications in telecom switching circuits.

Substiute Parts

D3012

TE Connectivity Potter & Brumfield RelaysIn Stock: 890D3012 Datasheet

Current PartRFQ

TQ2-24V

Panasonic Electric WorksIn Stock: 5131TQ2-24V Datasheet

SimilarRFQ

TQ2H-24V

Panasonic Electric WorksIn Stock: 1707TQ2H-24V Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the D3012 are identified based on the following critical parameters that determine functional compatibility:

Primary Matching Criteria:

• Contact Form: DPDT (2 Form C)
• Coil Voltage: 24VDC
• Coil Type: Non Latching
• Mounting Type: Through Hole
• Termination Style: PC Pin
• Relay Type: Telecom
• Coil Resistance: 2.88 kOhms
• Coil Current: 8.3 mA

Secondary Compatibility Factors:

• Contact Rating (Current): Substitute must meet or exceed application requirements
• Switching Voltage: Substitute must support required voltage levels
• Operating Temperature Range: Substitute must cover application temperature envelope
• Must Operate Voltage and Must Release Voltage: Substitute must maintain specified voltage thresholds

The identified substitutes TQ2-24V and TQ2H-24V from Panasonic Electric Works maintain identical coil specifications and contact form configuration. Both parts are active products with current manufacturing status, providing long-term availability advantages over the obsolete D3012.

Parameter Comparison

Engineering Selection Recommendations

Substitution Feasibility:

The TQ2-24V and TQ2H-24V relays from Panasonic Electric Works serve as functional equivalents to the obsolete D3012. Both substitute parts maintain identical coil specifications (24VDC, 8.3 mA, 2.88 kOhms), contact configuration (DPDT), and mounting characteristics (through-hole PC pin termination).

Key Considerations for Selection:

1. Contact Current Rating: The D3012 is rated for 2A contact current, while both Panasonic substitutes are rated for 1A. Applications requiring contact currents exceeding 1A are not suitable for these substitutes.

2. Switching Voltage: The D3012 supports 250VAC and 220VDC maximum switching voltages. The Panasonic substitutes support 125VAC and 110VDC maximum. Applications requiring higher switching voltages must be evaluated against substitute specifications.

3. Operating Temperature Range: The D3012 operates to 85°C maximum, while Panasonic substitutes operate to 70°C maximum. Applications requiring operation above 70°C require alternative solutions.

4. Must Operate Voltage: The D3012 requires 16.8VDC minimum to operate, while Panasonic substitutes require 18VDC minimum. Circuits with coil supply voltages between 16.8VDC and 18VDC may not reliably operate with Panasonic substitutes.

5. Product Status and Compliance: Both Panasonic substitutes are active products with ROHS3 compliance and REACH unaffected status, providing superior long-term availability and regulatory compliance compared to the obsolete D3012.

6. Packaging: The D3012 is supplied in standard packaging, while Panasonic substitutes are supplied in tube packaging. Procurement and assembly processes may require adjustment.

Frequently Asked Questions (FAQ)

Q: Can the TQ2-24V or TQ2H-24V directly replace the D3012 in all applications?

A: Direct replacement is possible only when application requirements do not exceed the following limits: contact current ≤1A, switching voltage ≤125VAC/110VDC, operating temperature ≤70°C, and coil supply voltage ≥18VDC. Applications exceeding any of these parameters require alternative solutions.

Q: What is the difference between TQ2-24V and TQ2H-24V?

A: Both parts share identical electrical specifications, coil voltage, contact form, and operating characteristics. The designation difference reflects Panasonic's product line structure within the TQ series. Both are active products with equivalent availability and compliance status.

Q: Are the Panasonic substitutes pin-compatible with the D3012?

A: Both substitutes maintain through-hole PC pin termination identical to the D3012. Physical pin configuration and spacing are compatible for direct PCB mounting replacement.

Q: What is the impact of the lower contact current rating on system design?

A: Applications currently operating at contact currents between 1A and 2A must be redesigned or alternative relay solutions identified. The 1A rating of Panasonic substitutes represents a hard limit for contact current capacity.

Q: How does the lower maximum switching voltage affect circuit design?

A: Circuits switching voltages above 125VAC or 110VDC cannot use these substitutes. Applications operating at the D3012's maximum ratings (250VAC, 220VDC) require alternative relay selection.

Q: What is the significance of the 18VDC must-operate voltage for the Panasonic substitutes?

A: Coil supply circuits designed for the D3012's 16.8VDC minimum may not reliably energize Panasonic substitutes. Circuits with marginal coil supply voltages require evaluation and potential redesign.

Q: Are there any contact material compatibility considerations?

A: The D3012 uses Palladium, Ruthenium, and Gold contact materials, while Panasonic substitutes use Silver and Gold. Contact material differences may affect performance in specific switching applications. Application-specific contact material requirements should be evaluated.

Q: What is the operational impact of the 3ms operate time versus the D3012's 4ms?

A: The Panasonic substitutes operate 1ms faster than the D3012. Circuits with timing-critical switching sequences may require evaluation to ensure compatibility with faster relay response.

Q: Are the Panasonic substitutes suitable for new design applications?

A: Yes. Both TQ2-24V and TQ2H-24V are active products with current manufacturing status, ROHS3 compliance, and REACH unaffected designation, making them suitable for new designs within their specified electrical and thermal limits.