ASX21003 Equivalent & Substitute Parts

Part Overview

The ASX21003 is a telecom relay manufactured by Panasonic Electric Works, featuring a DPDT (2 Form C) contact configuration with a 3VDC coil. This component is designed for through-hole mounting applications requiring low-current switching at telecom voltage levels. The part is currently obsolete, making equivalent substitutes necessary for ongoing system maintenance and new designs requiring compatible functionality.

Substiute Parts

ASX21003

Panasonic Electric WorksIn Stock: 934ASX21003 Datasheet

Current PartRFQ

V23079C1108B301

TE Connectivity Potter & Brumfield RelaysIn Stock: 10875V23079C1108B301 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the ASX21003 is based on the following critical parameters that must be maintained or exceeded:

Mandatory Matching Parameters:

• Contact Form: DPDT (2 Form C) configuration
• Coil Voltage: 3VDC nominal
• Mounting Type: Through Hole
• Termination Style: PC Pin

Allowable Parameter Variations:

• Contact Rating (Current): Substitute must equal or exceed 10 mA minimum
• Switching Voltage: Substitute must support at least 10VDC
• Operating Temperature: Substitute range must encompass or exceed -40°C ~ 70°C
• Coil Current: May vary from 11.7 mA
• Coil Resistance: May vary from 64.3 Ohms
• Operate/Release Time: May vary from 5 ms specification

The V23079C1108B301 qualifies as a substitute because it maintains the mandatory parameters while providing enhanced current handling capability (2A vs. 10mA) and extended operating temperature range (-40°C ~ 85°C).

Parameter Comparison

Engineering Selection Recommendations

The V23079C1108B301 is a direct functional substitute for the ASX21003 based on the following engineering criteria:

Electrical Compatibility: Both relays operate at 3VDC with identical DPDT contact configuration. The V23079C1108B301 provides superior current handling (2A vs. 10mA) and higher maximum switching voltage (220VDC vs. 10VDC), making it suitable for applications requiring the ASX21003's specifications.

Mechanical Compatibility: Both components feature through-hole mounting with PC pin termination, ensuring compatibility with existing PCB layouts designed for the ASX21003.

Product Status: The V23079C1108B301 is actively manufactured by TE Connectivity, providing long-term availability and supply chain stability compared to the obsolete ASX21003.

Compliance: The V23079C1108B301 is RoHS Compliant with MSL 1 (Unlimited), meeting modern regulatory requirements. Both parts share identical ECCN (EAR99) and HTSUS (8536.41.0020) classifications.

Performance Enhancement: The substitute offers faster switching times (4ms vs. 5ms) and extended operating temperature range (-40°C ~ 85°C vs. -40°C ~ 70°C), providing improved performance margins for demanding applications.

Frequently Asked Questions (FAQ)

Q: Can the V23079C1108B301 directly replace the ASX21003 in existing designs?

A: Yes. Both relays share identical coil voltage (3VDC), contact configuration (DPDT), mounting type (through-hole), and termination style (PC pin). The substitute's enhanced current rating and switching voltage do not create compatibility issues in applications designed for the ASX21003.

Q: What are the key differences between these two relays?

A: The primary differences are contact current rating (10mA vs. 2A), maximum switching voltage (10VDC vs. 220VDC), operating temperature range (-40°C~70°C vs. -40°C~85°C), and switching speed (5ms vs. 4ms). The V23079C1108B301 provides superior performance in all these parameters.

Q: Is the V23079C1108B301 available in the same packaging as the ASX21003?

A: The ASX21003 uses standard through-hole PC pin termination. The V23079C1108B301 is supplied in tube packaging but maintains identical through-hole pin configuration, ensuring PCB compatibility.

Q: What is the coil current difference between these relays?

A: The ASX21003 draws 11.7mA at 3VDC, while the V23079C1108B301 draws 23.3mA. This increased current requirement must be considered in power supply design, though both operate at the same 3VDC nominal voltage.

Q: Are there any compliance or regulatory differences?

A: Both relays share identical ECCN (EAR99) and HTSUS classifications. The V23079C1108B301 is RoHS Compliant, meeting current regulatory standards. The ASX21003, being obsolete, may not meet modern compliance requirements for new designs.

Q: Can the V23079C1108B301 handle the same switching voltage as the ASX21003?

A: Yes. The V23079C1108B301 is rated for 220VDC maximum switching voltage, which far exceeds the ASX21003's 10VDC maximum. Applications limited to 10VDC switching will operate well within the substitute's specifications.