TQ2SA-4.5V-W Telecom Relay Equivalent & Substitute Parts

Part Overview

The TQ2SA-4.5V-W is an active-status telecom relay manufactured by Panasonic Electric Works, configured as a DPDT (2 Form C) surface mount component with 2A contact rating and 4.5VDC coil voltage. This relay is designed for telecom switching applications requiring non-latching operation with dual-pole, dual-throw contact configuration. Substitute parts are identified when equivalent electrical and mechanical parameters are maintained across the same product category, enabling direct functional replacement in circuit designs.

Substiute Parts

TQ2SA-4.5V-W

Panasonic Electric WorksIn Stock: 1178TQ2SA-4.5V-W Datasheet

Current PartRFQ

TQ2SL-4.5V

Panasonic Electric WorksIn Stock: 1926TQ2SL-4.5V Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the TQ2SA-4.5V-W are identified based on strict electrical and mechanical parameter equivalence within the telecom relay category. The substitution logic is based on the following critical parameters that must remain constant:

Electrical Parameters (Must Match):

• Coil Voltage: 4.5VDC
• Contact Form: DPDT (2 Form C)
• Contact Rating (Current): 2 A
• Switching Voltage: 125VAC, 220VDC - Max
• Coil Current: 31 mA
• Coil Type: Non Latching
• Must Operate Voltage: 3.38 VDC
• Must Release Voltage: 0.45 VDC
• Operate Time: 4 ms
• Release Time: 4 ms
• Coil Resistance: 145 Ohms

Mechanical Parameters (Must Match):

• Mounting Type: Surface Mount
• Termination Style: Gull Wing
• Operating Temperature Range: -40°C ~ 85°C
• Contact Material: Silver Nickel (AgNi), Gold (Au)

Manufacturer Constraint:

• Manufacturer: Panasonic Electric Works

Parts meeting all these criteria are classified as parametric equivalents and direct substitutes.

Parameter Comparison

Engineering Selection Recommendations

The TQ2SL-4.5V is a direct parametric equivalent to the TQ2SA-4.5V-W. Both components are manufactured by Panasonic Electric Works and maintain identical electrical and mechanical specifications across all critical parameters. Both parts carry Active product status, indicating ongoing manufacturer support and availability.

The TQ2SL-4.5V is ROHS3 compliant and REACH unaffected, with ECCN classification EAR99 and HTSUS code 8536.41.0020. Current inventory for TQ2SL-4.5V is 1828 pieces, compared to 1129 pieces for TQ2SA-4.5V-W.

Selection between these equivalent parts is based on availability, inventory levels, and supply chain requirements rather than functional or electrical differences. Both parts are suitable for direct substitution in telecom relay applications requiring DPDT switching at 4.5VDC coil voltage with 2A contact rating.

Frequently Asked Questions (FAQ)

Q: Can TQ2SL-4.5V replace TQ2SA-4.5V-W in existing designs?

A: Yes. The TQ2SL-4.5V is a parametric equivalent with identical electrical and mechanical specifications. All critical parameters including coil voltage, contact form, contact rating, switching voltage, timing characteristics, and operating temperature range are matched. Direct substitution is supported.

Q: What are the key parameters that determine substitution compatibility?

A: Substitution compatibility is determined by matching: coil voltage (4.5VDC), contact form (DPDT), contact rating (2A), switching voltage (125VAC/220VDC max), coil current (31 mA), operate/release times (4 ms each), must-operate/must-release voltages, operating temperature range (-40°C to 85°C), and termination style (Gull Wing). All these parameters are identical between the main part and substitute.

Q: Are there differences in packaging or series designation?

A: The TQ2SA-4.5V-W belongs to the TQ series, while TQ2SL-4.5V belongs to the TQ-SMD series. Both use Bulk packaging. Series designation reflects internal Panasonic product line organization but does not affect electrical or mechanical compatibility.

Q: What compliance certifications apply to the substitute part?

A: The TQ2SL-4.5V is ROHS3 compliant and REACH unaffected. It carries ECCN classification EAR99 and HTSUS code 8536.41.0020.

Q: How do coil resistance and coil current specifications affect substitution?

A: Both parts maintain identical coil resistance (145 Ohms) and coil current (31 mA) specifications. These parameters determine power consumption and circuit design requirements. Matching values ensure equivalent performance in power supply and control circuit design.

Q: What is the significance of contact material specification?

A: Both parts use Silver Nickel (AgNi) and Gold (Au) contact materials. This specification determines contact reliability, switching performance, and resistance to oxidation. Identical contact material ensures equivalent switching characteristics and contact life.