TK1-12V Equivalent & Substitute Parts

Part Overview

The TK1-12V is a general purpose relay manufactured by Panasonic Electric Works, configured as a Single Pole Double Throw (SPDT) contact form with a 12VDC coil. This through-hole mounted relay is rated for 2A switching current and features sealed construction with silver and gold contact materials. The product is classified as obsolete, making identification of functionally equivalent alternatives essential for ongoing system support and component procurement.

Substiute Parts

TK1-12V

Panasonic Electric WorksIn Stock: 1922TK1-12V Datasheet

Current PartRFQ

V23026A1002B201

TE Connectivity Potter & Brumfield RelaysIn Stock: 26449V23026A1002B201 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the TK1-12V is determined by the following critical parameters:

• Coil Voltage: 12VDC (must match exactly for direct circuit compatibility)
• Contact Form: SPDT (1 Form C) (functional switching configuration requirement)
• Mounting Type: Through Hole (PCB layout and mechanical fit requirement)
• Termination Style: PC Pin (connection interface requirement)
• Operating Temperature Range: -40°C ~ 85°C (environmental operating envelope)

The V23026A1002B201 from TE Connectivity Potter & Brumfield Relays meets all critical substitution criteria. While the contact current rating differs (1A versus 2A), this represents a derating condition acceptable in applications where the actual switching current does not exceed 1A. The substitute maintains identical coil voltage, contact form, mounting configuration, and operating temperature specifications.

Parameter Comparison

Engineering Selection Recommendations

The V23026A1002B201 serves as a functional equivalent for the obsolete TK1-12V in applications where the switching current requirement does not exceed 1A. Both components share identical coil voltage, contact configuration, mounting methodology, and operating temperature specifications. The substitute demonstrates improved coil efficiency (5.3 mA versus 11.7 mA) and faster operate time (2 ms versus 3 ms).

Selection of the V23026A1002B201 is supported by ROHS3 compliance status and equivalent regulatory classification (EAR99, HTSUS 8536.41.0020). Both components maintain REACH unaffected status and unlimited moisture sensitivity rating.

The primary design consideration is current rating verification. Applications requiring switching currents exceeding 1A must retain the original TK1-12V specification or identify alternative components with higher current ratings.

Frequently Asked Questions (FAQ)

Q: Can the V23026A1002B201 directly replace the TK1-12V in all applications?

A: Direct replacement is valid only when the actual switching current does not exceed 1A. The substitute is rated for 1A maximum, compared to the original 2A rating. Circuit analysis must confirm current requirements before substitution.

Q: Are the coil voltage and contact form identical between these relays?

A: Yes. Both components operate on 12VDC coil voltage and feature SPDT (1 Form C) contact configuration. These parameters are identical and ensure functional compatibility in the switching circuit.

Q: What is the difference in switching voltage capability?

A: The TK1-12V supports 220VDC maximum switching voltage, while the V23026A1002B201 supports 125VDC maximum. Applications switching voltages above 125VDC require the original component or alternative with higher voltage rating.

Q: Are the mounting and termination styles compatible?

A: Yes. Both relays use through-hole mounting with PC pin termination, ensuring mechanical and electrical compatibility with existing PCB layouts.

Q: What is the impact of different coil resistance values?

A: The V23026A1002B201 has higher coil resistance (2.25 kOhms versus 1.03 kOhms), resulting in lower coil current draw (5.3 mA versus 11.7 mA). This improves power efficiency and reduces thermal load on the driving circuit.

Q: Do both components meet the same regulatory requirements?

A: Yes. Both components are classified as REACH unaffected, carry EAR99 export classification, and share the same HTSUS code (8536.41.0020). The substitute additionally carries ROHS3 compliance certification.