D3047 Telecom Relay DPDT 24V Equivalent & Substitute Parts

Part Overview

The D3047 is a telecom-grade double-pole double-throw (DPDT) relay manufactured by TE Connectivity Potter & Brumfield Relays, part of the FP2 and AXICOM series. This through-hole mounted relay operates at 24VDC with a 2A contact rating and is designed for telecom switching applications. The D3047 is classified as obsolete, making identification of functionally equivalent substitute components necessary for ongoing system maintenance, repair, and new design implementations where legacy compatibility is not required.

Substiute Parts

D3047

TE Connectivity Potter & Brumfield RelaysIn Stock: 837D3047 Datasheet

Current PartRFQ

TQ2-L-24V

Panasonic Electric WorksIn Stock: 3357TQ2-L-24V Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the D3047 is determined by alignment of critical electrical and mechanical parameters. The following parameters establish substitution eligibility:

Primary Matching Criteria:

• Coil voltage: 24VDC
• Contact form: DPDT (2 Form C)
• Coil type: Latching, Single Coil
• Coil current: 6.3 mA
• Coil resistance: 3.84 kOhms
• Mounting type: Through Hole
• Termination style: PC Pin
• Must operate voltage: 18 VDC

Secondary Compatibility Factors:

• Contact rating (current): Equal or greater capacity
• Switching voltage: Equal or greater rating
• Operating temperature range: Sufficient coverage for application
• RoHS compliance status

The TQ2-L-24V from Panasonic Electric Works meets the primary matching criteria and is classified as an active product with current manufacturing support. Differences in contact rating, switching voltage, and operating temperature range are documented in the parameter comparison table below.

Parameter Comparison

Engineering Selection Recommendations

D3047 to TQ2-L-24V Substitution Criteria:

The TQ2-L-24V is a suitable substitute for the D3047 when the following conditions are met:

1. Contact Current Requirement: Application load current does not exceed 1A. The D3047 supports 2A; the TQ2-L-24V supports 1A. Verify actual circuit current draw before substitution.

2. Switching Voltage Requirement: Maximum switching voltage in the application does not exceed 125VAC or 110VDC. The D3047 supports 250VAC/220VDC; the TQ2-L-24V supports 125VAC/110VDC.

3. Operating Temperature Requirement: Application operating temperature does not exceed 70°C. The D3047 operates to 85°C; the TQ2-L-24V operates to 70°C.

4. Timing Tolerance: The TQ2-L-24V operates and releases in 3ms versus the D3047's 20ms. Applications sensitive to relay switching speed must account for this difference.

5. Compliance Requirements: Both parts meet RoHS compliance. The TQ2-L-24V meets ROHS3 (current standard) and is REACH Unaffected, providing superior regulatory alignment for new designs and long-term availability.

6. Product Availability: The TQ2-L-24V is in active production with documented inventory, whereas the D3047 is obsolete. For new procurement, the TQ2-L-24V provides supply chain continuity.

Non-Substitution Scenarios:

Do not substitute the TQ2-L-24V for the D3047 in applications requiring contact ratings above 1A, switching voltages above 125VAC/110VDC, or operating temperatures above 70°C.

Frequently Asked Questions (FAQ)

Q: Can the TQ2-L-24V directly replace the D3047 in my circuit?

A: Direct replacement is possible only if your application meets all three conditions: contact current ≤1A, switching voltage ≤125VAC/110VDC, and operating temperature ≤70°C. Verify these parameters against your circuit specifications before substitution.

Q: What is the main difference between these two relays?

A: Both relays share identical coil voltage (24VDC), contact form (DPDT), coil current (6.3mA), and coil resistance (3.84kOhms). The primary differences are contact rating (D3047: 2A vs. TQ2-L-24V: 1A), switching voltage (D3047: 250VAC/220VDC vs. TQ2-L-24V: 125VAC/110VDC), operating temperature range (D3047: -40°C to 85°C vs. TQ2-L-24V: -40°C to 70°C), and switching speed (D3047: 20ms vs. TQ2-L-24V: 3ms).

Q: Why is the D3047 obsolete?

A: The D3047 is classified as obsolete by TE Connectivity Potter & Brumfield Relays. The TQ2-L-24V from Panasonic Electric Works is an active product with ongoing manufacturing support and represents the current market equivalent for this relay category.

Q: Does the faster switching time of the TQ2-L-24V affect compatibility?

A: The TQ2-L-24V operates and releases in 3ms compared to the D3047's 20ms. Applications with timing-critical functions must evaluate whether faster switching introduces any system-level effects. For most telecom applications, faster switching is beneficial.

Q: Are there packaging differences between these relays?

A: Both relays use through-hole mounting with PC pin termination. The D3047 is packaged individually; the TQ2-L-24V is packaged in tubes. Both are compatible with standard PCB assembly processes.

Q: What compliance certifications apply to each relay?

A: The D3047 is RoHS Compliant. The TQ2-L-24V is ROHS3 Compliant and REACH Unaffected, meeting current regulatory standards. Both are classified as EAR99 for export control purposes.

Q: Can I use the TQ2-L-24V in a high-temperature application requiring 85°C operation?

A: No. The TQ2-L-24V is rated to 70°C maximum. Applications requiring operation at 85°C require a relay with equivalent or higher temperature rating. The D3047 supports 85°C, but as an obsolete part, alternative active products with 85°C ratings should be evaluated.

Q: Is the TQ2-L-24V suitable for new product designs?

A: Yes. The TQ2-L-24V is in active production with current regulatory compliance (ROHS3, REACH Unaffected) and documented inventory availability. It is suitable for new designs provided application parameters fall within its electrical and thermal specifications.