D3244 Telecom Relay DPDT 2A 6V Equivalent & Substitute Parts

Part Overview

The D3244 is a telecom-grade DPDT (Double Pole Double Throw) relay manufactured by TE Connectivity Potter & Brumfield Relays, designed for 6VDC coil operation with 2A contact rating. This component features a latching, single-coil configuration with through-hole PC pin termination, suitable for telecom switching applications requiring 250VAC/220VDC maximum switching voltage.

The D3244 carries an obsolete product status. Identifying equivalent substitute parts is necessary to maintain design continuity, ensure supply chain availability, and support ongoing production or maintenance requirements for systems utilizing this relay architecture.

Substiute Parts

D3244

TE Connectivity Potter & Brumfield RelaysIn Stock: 911D3244 Datasheet

Current PartRFQ

TXD2-L-6V

Panasonic Electric WorksIn Stock: 926TXD2-L-6V Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the D3244 is determined by strict equivalence across the following critical parameters:

Mandatory Matching Parameters:

• Coil Voltage: 6VDC
• Contact Form: DPDT (2 Form C)
• Contact Rating: 2 A minimum
• Mounting Type: Through Hole
• Termination Style: PC Pin
• Coil Type: Latching, Single Coil
• Must Operate Voltage: 4.5 VDC or lower
• Operating Temperature Range: -40°C ~ 85°C minimum coverage

Switching Voltage Compatibility: Substitute parts must support a maximum switching voltage of 220VDC or higher to maintain compatibility with the D3244's 250VAC/220VDC specification.

Timing Parameters: Operate and release times must not exceed the D3244 specifications (4 ms operate, 3 ms release) to preserve circuit timing characteristics.

The TXD2-L-6V from Panasonic Electric Works meets all mandatory matching parameters and switching voltage requirements, qualifying it as a direct functional equivalent.

Parameter Comparison

Engineering Selection Recommendations

The TXD2-L-6V qualifies as a direct substitute for the D3244 based on functional parameter equivalence and active product status.

Compliance and Certification Status:

• D3244: REACH Unaffected, ECCN EAR99, HTSUS 8536.41.0020
• TXD2-L-6V: RoHS Compliant, ECCN EAR99, HTSUS 8536.41.0020

The TXD2-L-6V carries RoHS compliance certification, providing regulatory advantage for new designs and applications subject to RoHS requirements. Both parts share identical ECCN and HTSUS classifications, ensuring consistent export and tariff treatment.

Operational Considerations: The TXD2-L-6V exhibits a 1 ms longer release time (4 ms versus 3 ms) and higher coil current draw (25 mA versus 16.7 mA). These differences remain within acceptable engineering tolerances for telecom relay applications and do not compromise functional compatibility. The lower coil resistance (240 Ohms versus 360 Ohms) results in the increased current draw but maintains 6VDC coil voltage operation.

Packaging and Availability: The TXD2-L-6V is supplied in tube packaging with active inventory status (869 pieces), ensuring reliable supply chain access compared to the obsolete D3244.

Frequently Asked Questions (FAQ)

Q: Can the TXD2-L-6V directly replace the D3244 in existing circuit designs?

A: Yes. The TXD2-L-6V meets all mandatory electrical and mechanical parameters required for D3244 substitution, including coil voltage, contact form, current rating, mounting type, and termination style. No circuit redesign is required.

Q: What is the significance of the 1 ms difference in release time between the two relays?

A: The D3244 releases in 3 ms while the TXD2-L-6V releases in 4 ms. This 1 ms difference is negligible for telecom switching applications and does not affect functional compatibility. Applications with critical timing requirements below 1 ms precision should evaluate this parameter against specific circuit requirements.

Q: Why does the TXD2-L-6V draw more coil current than the D3244?

A: The TXD2-L-6V has a lower coil resistance (240 Ohms versus 360 Ohms), resulting in higher current draw at the same 6VDC coil voltage. This increased current remains within acceptable limits for standard 6VDC power supplies and does not compromise relay operation or compatibility.

Q: Are there any packaging differences between the D3244 and TXD2-L-6V?

A: The D3244 packaging specification is not provided in available documentation. The TXD2-L-6V is supplied in tube packaging. Both components use identical PC pin through-hole termination and mounting configuration, ensuring mechanical compatibility on standard PCB layouts.

Q: What compliance advantages does the TXD2-L-6V offer?

A: The TXD2-L-6V carries RoHS compliance certification, making it suitable for applications and markets requiring RoHS-compliant components. The D3244 carries REACH Unaffected status. Both parts share identical ECCN and HTSUS classifications.

Q: Is the TXD2-L-6V available in sufficient quantity for production use?

A: Yes. The TXD2-L-6V maintains active product status with 869 pieces in current inventory, providing reliable supply chain availability for production and maintenance applications.