TX2SL-9V-Z Telecom Relay Equivalent & Substitute Parts

Part Overview

The TX2SL-9V-Z is a surface mount telecom relay manufactured by Panasonic Electric Works, configured as a DPDT (2 Form C) switching device with 2A contact rating and 9VDC coil voltage. This part is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and procurement continuity. The TX2SL series has been superseded by active production alternatives within the Panasonic TX family and compatible cross-manufacturer options that maintain identical electrical and mechanical specifications.

Key Parameters

Parameter	Value
Manufacturer Part Number	TX2SL-9V-Z
Manufacturer	Panasonic Electric Works
Relay Type	Telecom
Contact Form	DPDT (2 Form C)
Coil Voltage	9VDC
Contact Rating (Current)	2 A
Switching Voltage	220VDC - Max
Coil Current	15.5 mA
Coil Resistance	579 Ohms
Mounting Type	Surface Mount
Termination Style	Gull Wing
Operating Temperature Range	-40°C ~ 85°C
Must Operate Voltage	6.75 VDC
Must Release Voltage	0.9 VDC
Operate Time	4 ms
Release Time	4 ms
Contact Material	Silver (Ag), Gold (Au)
Seal Rating	Sealed - Fully
Coil Type	Non Latching
Product Status	Obsolete

Substitute Part Grouping Explanation

Substitute parts for the TX2SL-9V-Z are classified into two categories based on substitution criteria:

Parametric Equivalents (Panasonic TX Series): TX2SA-9V-Z, TX2SA-9V-X, TX2SS-9V-Z, and TX2SS-9V-X are direct functional equivalents manufactured by Panasonic Electric Works. These parts maintain identical electrical parameters across all critical specifications: 9VDC coil voltage, 2A contact rating, DPDT contact form, 579 Ohms coil resistance, 15.5 mA coil current, 220VDC maximum switching voltage, and identical timing characteristics (4 ms operate and release times). All parametric equivalents feature surface mount gull wing termination, sealed construction, and operate within the same temperature range (-40°C ~ 85°C). The primary differences are product status (active versus obsolete) and packaging format (Tape & Reel for active variants).

Similar Substitute (Cross-Manufacturer): V23079D1006B301 and V23079D2006B301 from TE Connectivity Potter & Brumfield Relays are general purpose relays that match the TX2SL-9V-Z across all critical electrical and mechanical parameters. These parts share identical coil voltage (9VDC), contact form (DPDT), contact rating (2A), coil current (15.6 mA, within tolerance of 15.5 mA), timing specifications (4 ms operate and release), operating temperature range, and surface mount gull wing termination. The V23079 series supports higher switching voltage capability (250VAC, 220VDC) and uses Silver Nickel contact material instead of pure silver, representing a functional upgrade path.

Parameter Comparison

Parameter	TX2SL-9V-Z	TX2SA-9V-Z	TX2SA-9V-X	TX2SS-9V-Z	TX2SS-9V-X	V23079D1006B301	V23079D2006B301
Manufacturer	Panasonic	Panasonic	Panasonic	Panasonic	Panasonic	TE Connectivity	TE Connectivity
Coil Voltage	9VDC	9VDC	9VDC	9VDC	9VDC	9VDC	9VDC
Contact Form	DPDT	DPDT	DPDT	DPDT	DPDT	DPDT	DPDT
Contact Rating	2 A	2 A	2 A	2 A	2 A	2 A	2 A
Coil Current	15.5 mA	15.5 mA	15.5 mA	15.5 mA	15.5 mA	15.6 mA	15.6 mA
Coil Resistance	579 Ω	579 Ω	579 Ω	579 Ω	579 Ω	578 Ω	578 Ω
Switching Voltage	220VDC	220VDC	220VDC	220VDC	220VDC	250VAC, 220VDC	250VAC, 220VDC
Operate Time	4 ms	4 ms	4 ms	4 ms	4 ms	4 ms	4 ms
Release Time	4 ms	4 ms	4 ms	4 ms	4 ms	4 ms	4 ms
Must Operate Voltage	6.75 VDC	6.75 VDC	6.75 VDC	6.75 VDC	6.75 VDC	6.75 VDC	6.75 VDC
Must Release Voltage	0.9 VDC	0.9 VDC	0.9 VDC	0.9 VDC	0.9 VDC	0.9 VDC	0.9 VDC
Operating Temperature	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 85°C
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount
Termination Style	Gull Wing	Gull Wing	Gull Wing	Gull Wing	Gull Wing	Gull Wing	Gull Wing
Product Status	Obsolete	Active	Active	Active	Active	Active	Active
RoHS Status	REACH Unaffected	RoHS Compliant	RoHS Compliant	RoHS Compliant	RoHS Compliant	RoHS Compliant	RoHS Compliant

Engineering Selection Recommendations

For applications currently using TX2SL-9V-Z, the Panasonic TX2SA and TX2SS series provide direct substitution with active product status and RoHS compliance. TX2SA-9V-Z and TX2SA-9V-X are preferred for new designs requiring Panasonic sourcing, with TX2SA-9V-Z offering Tape & Reel packaging suitable for automated assembly. TX2SS-9V-Z and TX2SS-9V-X provide equivalent functionality with alternative base product designation within the same manufacturer ecosystem.

TE Connectivity V23079D1006B301 and V23079D2006B301 are suitable cross-manufacturer alternatives when Panasonic supply is constrained. These relays maintain electrical compatibility across all critical parameters and offer enhanced switching voltage capability (250VAC support). Both V23079 variants are RoHS compliant and actively produced, supporting long-term procurement continuity.

Selection between Panasonic and TE Connectivity options should be based on supply availability, existing qualification history, and packaging requirements. All listed substitutes are electrically and mechanically compatible with the TX2SL-9V-Z within the specified operating parameters.

Frequently Asked Questions (FAQ)

Q: Can TX2SA-9V-Z directly replace TX2SL-9V-Z in existing designs?

A: Yes. TX2SA-9V-Z is a parametric equivalent with identical electrical specifications (9VDC coil, 2A DPDT contact form, 579 Ohms coil resistance, 4 ms timing) and mechanical configuration (surface mount, gull wing termination). The primary difference is product status (active versus obsolete) and packaging format (Tape & Reel). PCB layout and circuit design require no modification.

Q: What is the difference between TX2SA and TX2SS variants?

A: Both TX2SA and TX2SS series maintain identical electrical and mechanical parameters specified for the TX2SL-9V-Z. The difference lies in the base product designation (TX2SA versus TX2SS), which may reflect internal Panasonic product line segmentation. Electrical performance, coil voltage, contact rating, timing, and operating temperature are identical across both series.

Q: Are TE Connectivity V23079 relays compatible with Panasonic TX2 designs?

A: Yes. V23079D1006B301 and V23079D2006B301 maintain electrical compatibility across all critical parameters: 9VDC coil voltage, 2A DPDT contact form, 15.6 mA coil current (within tolerance of 15.5 mA), 4 ms operate and release timing, and identical operating temperature range. Surface mount gull wing termination is identical. The V23079 series supports higher switching voltage (250VAC, 220VDC) compared to TX2SL specification (220VDC), representing a functional upgrade.

Q: What packaging options are available for substitute parts?

A: TX2SL-9V-Z was supplied in standard packaging. Active Panasonic equivalents (TX2SA-9V-Z, TX2SA-9V-X, TX2SS-9V-Z, TX2SS-9V-X) are available in Tape & Reel (TR) format suitable for automated pick-and-place assembly. TE Connectivity V23079D1006B301 and V23079D2006B301 are also supplied in Tape & Reel packaging. Confirm packaging requirements with procurement before finalizing part selection.

Q: Are all substitute parts RoHS compliant?

A: All active substitute parts listed (TX2SA, TX2SS, and V23079 series) are RoHS compliant. The original TX2SL-9V-Z is classified as REACH Unaffected due to obsolete status. For new designs and procurement, RoHS-compliant alternatives ensure regulatory compliance with current environmental standards.

Q: What is the coil resistance tolerance across substitute parts?

A: Panasonic TX2SA and TX2SS variants maintain 579 Ohms coil resistance identical to TX2SL-9V-Z. TE Connectivity V23079 relays specify 578 Ohms, representing a 1 Ohm difference within normal manufacturing tolerance. This negligible variance does not affect circuit performance or coil current draw (15.5 mA versus 15.6 mA).

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