ALE73B24 Equivalent & Substitute Parts

Part Overview

The ALE73B24 is a general purpose relay manufactured by Panasonic Electric Works, featuring SPST-NO (1 Form A) contact configuration with 24VDC coil voltage and 16A contact rating. This through-hole mounted relay is designed for industrial control applications requiring switching of AC loads up to 277VAC. The part is currently obsolete, making identification of functionally equivalent alternatives essential for system maintenance, repair, and redesign applications.

Substiute Parts

ALE73B24

Panasonic Electric WorksIn Stock: 962ALE73B24 Datasheet

Current PartRFQ

PCK-124D2M,000

TE Connectivity Potter & Brumfield RelaysIn Stock: 914PCK-124D2M,000 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the ALE73B24 is determined by strict equivalence in the following electrical and mechanical parameters:

• Coil voltage: 24VDC (exact match required)
• Contact configuration: SPST-NO (1 Form A) (exact match required)
• Contact current rating: 16A minimum (equal or higher acceptable)
• Maximum switching voltage: 277VAC or higher (equal or higher acceptable)
• Mounting type: Through hole (exact match required)
• Termination style: PC Pin, Quick Connect - 0.187" (4.7mm) (exact match required)
• Contact material: Silver Tin Oxide (AgSnO) (exact match required)

The PCK-124D2M,000 manufactured by TE Connectivity Potter & Brumfield Relays meets all mandatory substitution criteria and is classified as a direct functional equivalent.

Parameter Comparison

Engineering Selection Recommendations

The PCK-124D2M,000 is a direct functional equivalent for the obsolete ALE73B24. Both relays share identical electrical specifications for coil voltage, contact configuration, current rating, and switching voltage. The substitute part is currently in active production status, ensuring long-term availability for replacement and new designs.

The ALE73B24 carries RoHS compliance certification, while the PCK-124D2M,000 is marked as not applicable for RoHS status. Both parts carry CSA, TUV, UR, and VDE approvals (Panasonic) or equivalent industrial certifications. Selection between these parts should be based on system compliance requirements and supply chain considerations.

Minor differences exist in coil current (8.3 mA vs. 20.8 mA), coil resistance (2.88 kOhms vs. 1.15 kOhms), release time (25 ms vs. 10 ms), and minimum operating temperature (-40°C vs. -30°C). These differences do not affect functional substitution in standard industrial control applications operating within the specified temperature range of -30°C to 85°C.

Frequently Asked Questions (FAQ)

Q: Can the PCK-124D2M,000 directly replace the ALE73B24 in existing applications?

A: Yes. Both relays meet identical specifications for coil voltage (24VDC), contact configuration (SPST-NO), current rating (16A), switching voltage (277VAC), mounting type (through hole), and termination style (PC Pin, Quick Connect - 0.187"). Direct substitution is electrically and mechanically compatible.

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

A: The ALE73B24 draws 8.3 mA while the PCK-124D2M,000 draws 20.8 mA. This difference reflects different coil designs but does not affect functional performance. Circuit design must accommodate the higher current draw of the substitute part.

Q: Are there temperature range differences that affect substitution?

A: The ALE73B24 operates from -40°C to 85°C, while the PCK-124D2M,000 operates from -30°C to 85°C. For applications requiring operation below -30°C, the original part specification must be maintained. For standard industrial applications within -30°C to 85°C, both parts are equivalent.

Q: What is the difference in release time?

A: The ALE73B24 has a release time of 25 ms, while the PCK-124D2M,000 has a release time of 10 ms. Both meet the same operate time specification of 20 ms. The faster release time of the substitute part does not create compatibility issues in standard switching applications.

Q: Does the difference in coil resistance affect circuit design?

A: The ALE73B24 has 2.88 kOhms coil resistance while the PCK-124D2M,000 has 1.15 kOhms. This difference is reflected in the coil current specifications. Existing drive circuits must be verified to supply the higher current requirement (20.8 mA) of the substitute part.

Q: Are both parts RoHS compliant?

A: The ALE73B24 is RoHS compliant. The PCK-124D2M,000 is marked as not applicable for RoHS status. For applications requiring RoHS compliance certification, verify the substitute part's compliance status with the manufacturer or your procurement requirements.