TK1-24V General Purpose Relay SPDT Equivalent & Substitute Parts

Part Overview

The TK1-24V is a general purpose relay manufactured by Panasonic Electric Works, featuring a single pole double throw (SPDT) contact configuration with a 24VDC coil. This through-hole mounted relay is designed for switching applications up to 2A at 220VDC maximum. The product is currently obsolete, making equivalent and substitute parts necessary for system maintenance, repair, and legacy equipment support.

Substiute Parts

TK1-24V

Panasonic Electric WorksIn Stock: 90460TK1-24V Datasheet

Current PartRFQ

V23026A1004B201

TE Connectivity Potter & Brumfield RelaysIn Stock: 993V23026A1004B201 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the TK1-24V is determined by the following critical parameters:

• Coil Voltage: Must be 24VDC to match the control circuit
• Contact Form: Must be SPDT (1 Form C) to maintain switching functionality
• Mounting Type: Must be Through Hole to fit existing PCB layouts
• Termination Style: Must be PC Pin for direct board connection
• Operating Temperature Range: Must encompass -40°C ~ 85°C for environmental compatibility
• Coil Type: Must be Non Latching for momentary switching behavior

The V23026A1004B201 from TE Connectivity Potter & Brumfield Relays meets these core substitution criteria. However, the contact rating differs: the substitute part is rated at 1A maximum versus the original 2A rating. This represents a functional limitation that must be evaluated against actual circuit requirements.

Parameter Comparison

Engineering Selection Recommendations

The V23026A1004B201 qualifies as a functional substitute for the TK1-24V based on matching coil voltage, contact form, mounting type, termination style, and operating temperature range. Both parts are obsolete products with REACH Unaffected status and EAR99 export classification.

The primary engineering consideration is the reduced contact current rating of the substitute part (1A versus 2A). Selection of this substitute is appropriate only when the actual circuit load current does not exceed 1A. Applications requiring the full 2A switching capacity of the original TK1-24V cannot use this substitute without circuit redesign.

The substitute part offers lower coil current consumption (5.3 mA versus 11.3 mA) and faster operate time (2 ms versus 3 ms), which may provide operational advantages in power-sensitive or timing-critical applications.

Frequently Asked Questions (FAQ)

Q: Can the V23026A1004B201 directly replace the TK1-24V in all applications?

A: Direct replacement is possible only when the circuit load current does not exceed 1A. The substitute part has a maximum contact rating of 1A, compared to the original 2A rating. If your application requires switching currents above 1A, this substitute is not suitable without circuit modification.

Q: Are the coil drive requirements identical between these parts?

A: Both parts require 24VDC coil voltage and share identical must-operate (18VDC) and must-release (2.4VDC) voltage thresholds. However, the substitute part draws lower coil current (5.3 mA versus 11.3 mA), which may affect driver circuit design if current-limited supplies are used.

Q: What are the switching voltage differences?

A: The TK1-24V supports 220VDC maximum switching voltage, while the V23026A1004B201 supports 150VAC or 125VDC maximum. For DC switching applications above 125V, the original part specification is required.

Q: Are both parts through-hole mounted with PC pin termination?

A: Yes. Both parts use through-hole mounting and PC pin termination, making them mechanically compatible with existing PCB layouts designed for the TK1-24V.

Q: What is the operating temperature compatibility?

A: Both parts operate across the identical temperature range of -40°C to 85°C, ensuring thermal compatibility in the same environmental conditions.

Q: Do these parts have different contact material compositions?

A: Yes. The TK1-24V uses Silver and Gold contact materials, while the V23026A1004B201 uses Palladium Nickel, Rhodium, and Gold. Contact material differences may affect performance in specific switching environments, particularly for low-signal or corrosive applications.