LKT1AF-24V Equivalent & Substitute Parts

Part Overview

The LKT1AF-24V is a general purpose relay manufactured by Panasonic Electric Works, featuring a SPST-NO (1 Form A) contact configuration with a 24VDC coil. This through-hole mounted relay is rated for 5A at 277VAC maximum switching voltage and is designed for non-latching operation in industrial control applications.

The LKT1AF-24V is classified as obsolete. Identifying equivalent substitute parts is necessary to maintain design continuity, ensure supply chain availability, and support ongoing production or maintenance requirements for systems utilizing this relay.

Substiute Parts

LKT1AF-24V

Panasonic Electric WorksIn Stock: 1256LKT1AF-24V Datasheet

Current PartRFQ

ALZN5B24W

Panasonic Electric WorksIn Stock: 1280ALZN5B24W Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the LKT1AF-24V is determined by strict alignment of the following electrical and mechanical parameters:

• Coil voltage must be 24VDC
• Contact configuration must be SPST-NO (1 Form A)
• Mounting type must be through-hole with PC pin termination
• Coil type must be non-latching
• Must operate and release voltage thresholds must be compatible
• Contact material must be Silver Tin Oxide (AgSnO)
• Seal rating must provide flux protection

The ALZN5B24W meets these core substitution criteria. While it offers higher contact current rating (16A versus 5A) and extended temperature range (-40°C ~ 85°C versus -40°C ~ 70°C), these represent performance enhancements rather than incompatibilities. The substitute part maintains identical coil voltage, contact form, mounting configuration, and operational characteristics required for direct replacement.

Parameter Comparison

Engineering Selection Recommendations

The ALZN5B24W is a direct functional substitute for the LKT1AF-24V based on electrical and mechanical compatibility. Both relays share identical coil voltage, contact configuration, timing characteristics, and operational thresholds.

The ALZN5B24W offers the advantage of active product status, ensuring continued availability and supply chain support. It carries ROHS3 compliance and holds cURus and VDE approvals, providing enhanced regulatory coverage compared to the obsolete LKT1AF-24V.

The ALZN5B24W's higher contact current rating (16A) and extended operating temperature range (-40°C ~ 85°C) represent performance margins that do not compromise compatibility with applications designed for the LKT1AF-24V. The higher switching voltage rating (440VAC) provides additional operational headroom.

Selection of the ALZN5B24W is appropriate for new designs, production continuity, and maintenance applications requiring the LKT1AF-24V specification.

Frequently Asked Questions (FAQ)

Q: Can the ALZN5B24W directly replace the LKT1AF-24V in existing PCB designs?

A: Yes. Both relays feature identical through-hole PC pin termination, 24VDC coil voltage, SPST-NO contact form, and non-latching operation. No PCB layout modifications are required.

Q: What is the significance of the higher 16A contact rating on the ALZN5B24W compared to the 5A rating of the LKT1AF-24V?

A: The ALZN5B24W can safely switch higher currents than the original specification. Applications limited to 5A operation remain fully compatible. The higher rating provides design margin and supports potential future current requirements without relay replacement.

Q: Does the extended operating temperature range of the ALZN5B24W affect compatibility?

A: No. The ALZN5B24W operates across -40°C ~ 85°C, which encompasses the LKT1AF-24V range of -40°C ~ 70°C. Applications operating within the original temperature limits experience no change in relay behavior.

Q: Are there packaging differences between these relays?

A: Both relays are supplied in tray packaging and feature through-hole mounting with PC pin termination. No packaging or handling modifications are necessary.

Q: What compliance advantages does the ALZN5B24W provide?

A: The ALZN5B24W holds ROHS3 compliance, cURus, and VDE approvals. The LKT1AF-24V is RoHS compliant. The substitute part provides broader regulatory recognition and certification coverage.

Q: Why is the LKT1AF-24V classified as obsolete?

A: Obsolete status indicates the manufacturer has discontinued production. The ALZN5B24W, with active product status, ensures ongoing availability and manufacturing support for equivalent functionality.