TN2-L2-H-5V Equivalent & Substitute Parts

Part Overview

The TN2-L2-H-5V is a general purpose DPDT (2 Form C) relay manufactured by Panasonic Electric Works, designed for through-hole mounting applications with a 5VDC coil voltage and 1A contact rating. This component is classified as obsolete, making identification of functionally equivalent substitute parts essential for ongoing system maintenance, repair, and redesign efforts. The relay features latching dual-coil operation, sealed construction, and silver/gold contact materials suitable for industrial control and switching applications.

Substiute Parts

TN2-L2-H-5V

Panasonic Electric WorksIn Stock: 6517TN2-L2-H-5V Datasheet

Current PartRFQ

V23079B1201B301

TE Connectivity Potter & Brumfield RelaysIn Stock: 1872V23079B1201B301 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the TN2-L2-H-5V is determined by the following critical parameters that must remain compatible:

Core Compatibility Requirements:

• Coil voltage: 5VDC (exact match required)
• Contact form: DPDT (2 Form C) configuration
• Mounting type: Through hole with PC pin termination
• Coil type: Latching, dual coil operation
• Must operate voltage: 3.75 VDC minimum

Allowable Parameter Variations:

• Contact rating current: Equal to or greater than 1A
• Switching voltage: Equal to or greater than 125VAC/110VDC
• Operating temperature range: May extend beyond -40°C ~ 70°C
• Coil current: May differ from 40 mA
• Operate/release time: May differ from 3 ms
• Contact material composition: May vary (silver, gold, silver-nickel combinations acceptable)

The V23079B1201B301 from TE Connectivity Potter & Brumfield Relays meets all core compatibility requirements and exceeds minimum performance specifications in contact rating and switching voltage.

Parameter Comparison

Engineering Selection Recommendations

The V23079B1201B301 is a direct functional substitute for the obsolete TN2-L2-H-5V. Selection is supported by the following factors:

Product Status & Availability: The V23079B1201B301 maintains active product status with documented inventory availability (1778 pcs), whereas the TN2-L2-H-5V is obsolete. This ensures long-term supply chain viability for new designs and ongoing production requirements.

Compliance & Certifications: Both components share identical ECCN (EAR99) and HTSUS (8536.41.0020) classifications. The V23079B1201B301 carries RoHS3 compliance certification, meeting modern regulatory requirements. Both components are REACH unaffected and maintain MSL 1 (unlimited) moisture sensitivity ratings.

Performance Enhancement: The substitute part provides superior electrical performance with doubled contact current rating (2A vs 1A) and doubled switching voltage capability (250VAC/220VDC vs 125VAC/110VDC), enabling application in higher-power switching scenarios without circuit redesign.

Operational Compatibility: Identical coil voltage, contact form, mounting configuration, and dual-coil latching operation ensure direct functional replacement. The 1 ms increase in operate/release time and 28 mA coil current (versus 40 mA) represent negligible differences for general purpose relay applications.

Frequently Asked Questions (FAQ)

Q: Can the V23079B1201B301 directly replace the TN2-L2-H-5V in existing PCB designs?

A: Yes. Both relays share identical through-hole PC pin termination, DPDT contact configuration, 5VDC coil voltage, and latching dual-coil operation. No PCB layout modifications are required. Physical dimensions should be verified against the specific PCB footprint, though both are standard through-hole relay packages.

Q: What is the significance of the higher contact rating (2A vs 1A) on the substitute part?

A: The V23079B1201B301 supports twice the continuous contact current of the original part. This provides design margin for applications operating near the 1A limit and enables the relay to function in higher-current switching applications without replacement.

Q: Does the 1 ms difference in operate/release time affect system performance?

A: For general purpose relay applications, the 4 ms operate and release times of the V23079B1201B301 are functionally equivalent to the 3 ms specification of the TN2-L2-H-5V. This difference is negligible in industrial control, switching, and timing-insensitive applications. Applications with strict timing requirements below 1 ms should be evaluated individually.

Q: Why does the substitute part have higher coil resistance (178 Ohms vs 125 Ohms)?

A: Higher coil resistance results in lower coil current draw (28 mA vs 40 mA) while maintaining the same 5VDC activation voltage and 3.75 VDC must-operate threshold. This represents improved power efficiency and reduced thermal load on the driving circuit.

Q: Is the extended operating temperature range (-40°C ~ 85°C vs -40°C ~ 70°C) significant?

A: The extended upper temperature limit of 85°C provides additional thermal margin for applications in elevated ambient conditions or high-density PCB environments. This enhancement does not restrict use in applications within the original -40°C ~ 70°C range.

Q: What packaging differences exist between these relays?

A: The TN2-L2-H-5V uses standard packaging (not specified in available data), while the V23079B1201B301 is supplied in tube packaging. Tube packaging is standard for through-hole relay distribution and does not affect component functionality or PCB assembly compatibility.

Q: Are there any compliance or regulatory differences between the two parts?

A: Both components share identical ECCN and HTSUS classifications. The V23079B1201B301 carries RoHS3 compliance certification, meeting current environmental regulations. Both maintain REACH unaffected status and MSL 1 moisture sensitivity ratings, ensuring equivalent regulatory compliance for modern applications.