D3046 Telecom Relay DPDT 12V Equivalent & Substitute Parts

Part Overview

The D3046 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 12VDC with a 2A contact rating and is designed for telecom switching applications. The D3046 is classified as obsolete, making identification of equivalent substitute parts essential for ongoing system maintenance and new design implementations where legacy compatibility is required.

Substiute Parts

D3046

TE Connectivity Potter & Brumfield RelaysIn Stock: 1237D3046 Datasheet

Current PartRFQ

TQ2-L-12V

Panasonic Electric WorksIn Stock: 1763TQ2-L-12V Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the D3046 is determined by strict alignment of the following critical parameters:

Mandatory Matching Parameters:

• Coil Voltage: 12VDC
• Contact Form: DPDT (2 Form C)
• Coil Type: Latching, Single Coil
• Mounting Type: Through Hole
• Termination Style: PC Pin
• Coil Resistance: 1.44 kOhms
• Coil Current: 8.3 mA

Allowable Variation Parameters:

• Contact Rating (Current): Substitute must meet or exceed 2A requirement
• Switching Voltage: Substitute must support minimum 250VAC, 220VDC
• Operating Temperature Range: Substitute must cover minimum -40°C ~ 85°C
• RoHS Compliance: Substitute must maintain equivalent environmental compliance

The TQ2-L-12V from Panasonic Electric Works meets the mandatory matching parameters. However, the contact rating (1A) is lower than the D3046 (2A), and the switching voltage (125VAC, 110VDC) is reduced. These differences require application-level evaluation based on actual circuit current and voltage demands.

Parameter Comparison

Engineering Selection Recommendations

D3046 (TE Connectivity Potter & Brumfield):

• Obsolete status limits long-term availability
• RoHS Compliant certification established
• Higher contact rating (2A) and switching voltage (250VAC, 220VDC) support demanding applications
• Slower switching times (20ms) suitable for applications not requiring rapid response

TQ2-L-12V (Panasonic Electric Works):

• Active product status ensures current manufacturing and availability
• ROHS3 Compliant certification meets current environmental standards
• Lower contact rating (1A) and switching voltage (125VAC, 110VDC) suitable for lower-power applications
• Faster switching times (3ms) enable rapid response applications
• Narrower operating temperature range (-40°C ~ 70°C) excludes high-temperature environments above 70°C

Selection between these parts depends on application-specific requirements for current capacity, voltage switching capability, temperature environment, and switching speed. The TQ2-L-12V is suitable for applications operating within its specified limits and offers the advantage of active product status and current compliance certifications.

Frequently Asked Questions (FAQ)

Q: Can the TQ2-L-12V directly replace the D3046 in all applications?

A: Direct replacement is not universal. The TQ2-L-12V has lower contact rating (1A vs. 2A) and lower switching voltage (125VAC/110VDC vs. 250VAC/220VDC). Replacement is valid only when circuit current does not exceed 1A and switching voltage does not exceed 125VAC or 110VDC. Operating temperature must remain below 70°C.

Q: What is the significance of the identical coil resistance and current specifications?

A: Matching coil resistance (1.44 kOhms) and coil current (8.3 mA) ensure that both relays draw equivalent power from the control circuit. This allows direct substitution at the control interface level without requiring modifications to drive circuitry.

Q: Why does the TQ2-L-12V have faster switching times?

A: The TQ2-L-12V operates at 3ms for both operate and release times compared to the D3046 at 20ms. This is a design characteristic of the Panasonic relay and reflects different mechanical construction. Applications sensitive to switching speed must account for this difference.

Q: Are there packaging differences between these relays?

A: The D3046 is specified with "-" packaging notation, while the TQ2-L-12V is supplied in Tube packaging. Both use identical through-hole PC pin termination, so physical board-level compatibility is maintained. Tube packaging indicates current production format for the Panasonic part.

Q: What compliance certifications apply to each relay?

A: The D3046 carries RoHS Compliant certification. The TQ2-L-12V carries ROHS3 Compliant certification, which represents the current environmental compliance standard. Both parts are classified under ECCN EAR99 and HTSUS 8536.41.0020.

Q: How does the operating temperature range affect substitution decisions?

A: The D3046 operates from -40°C to 85°C, while the TQ2-L-12V operates from -40°C to 70°C. Applications requiring operation above 70°C cannot use the TQ2-L-12V. Applications within the -40°C to 70°C range can use either part, subject to other parameter constraints.