ALZ22B18 Equivalent & Substitute Parts

Part Overview

The ALZ22B18 is a general purpose relay manufactured by Panasonic Electric Works, featuring SPST-NO (1 Form A) contact configuration with 18VDC coil voltage and 16A contact rating. This part is classified as obsolete, making identification of active equivalent alternatives essential for ongoing production and maintenance applications. The ALZ series provides sealed, fully-rated switching solutions for industrial control circuits operating at 440VAC maximum switching voltage.

Substiute Parts

ALZ22B18

Panasonic Electric WorksIn Stock: 1028ALZ22B18 Datasheet

Current PartRFQ

ALZ52B18

Panasonic Electric WorksIn Stock: 772ALZ52B18 Datasheet

Parametric EquivalentRFQ

ALZ52B18T

Panasonic Electric WorksIn Stock: 857ALZ52B18T Datasheet

Parametric EquivalentRFQ

ALZ52B18W

Panasonic Electric WorksIn Stock: 1176ALZ52B18W Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

The ALZ22B18 has three active equivalent substitutes within the Panasonic Electric Works ALZ series: ALZ52B18, ALZ52B18T, and ALZ52B18W. These parts are classified as parametric equivalents because they maintain identical electrical and mechanical specifications across all critical switching parameters:

Key Parameters Determining Substitution:

• Coil voltage: 18VDC (identical)
• Contact form: SPST-NO (1 Form A) (identical)
• Contact rating: 16A (identical)
• Maximum switching voltage: 440VAC (identical)
• Maximum switching load: 7040VA (identical)
• Coil current: 22.2 mA (identical)
• Coil resistance: 810 Ohms (identical)
• Operating temperature range: -40°C ~ 85°C (identical)
• Contact material: Silver Tin Oxide (AgSnO) (identical)
• Mounting type: Through Hole (identical)
• Termination style: PC Pin (identical)
• Seal rating: Sealed - Fully (identical)
• Timing characteristics: 15 ms operate, 5 ms release (identical)

The substitutes differ only in product status (active vs. obsolete) and packaging configuration (tube vs. dash), with ALZ52B18T and ALZ52B18W variants offering RoHS compliance certification.

Parameter Comparison

Engineering Selection Recommendations

All three substitute parts (ALZ52B18, ALZ52B18T, ALZ52B18W) are direct functional replacements for the obsolete ALZ22B18. Selection between substitutes should be based on the following criteria:

ALZ52B18: Active product with identical electrical and mechanical specifications. Suitable for applications where RoHS compliance is not mandated. Tube packaging provides standard component handling and storage.

ALZ52B18T: Active product with RoHS Compliant certification. Recommended for applications subject to RoHS Directive 2011/65/EU or equivalent regulatory requirements. Tube packaging configuration.

ALZ52B18W: Active product with RoHS Compliant certification. Recommended for applications subject to RoHS Directive 2011/65/EU or equivalent regulatory requirements. Tube packaging configuration. Highest current inventory availability (1069 Pcs).

All substitutes maintain cURus and VDE approval certifications consistent with the original ALZ22B18 specification.

Frequently Asked Questions (FAQ)

Q: Can ALZ52B18, ALZ52B18T, and ALZ52B18W be used interchangeably with ALZ22B18?

A: Yes. All three parts are parametric equivalents with identical electrical ratings, contact configurations, coil specifications, and timing characteristics. Direct substitution is supported without circuit modification.

Q: What is the difference between ALZ52B18, ALZ52B18T, and ALZ52B18W?

A: The three parts are electrically and mechanically identical. ALZ52B18T and ALZ52B18W carry RoHS Compliant certification, while ALZ52B18 does not specify RoHS status. All are supplied in tube packaging. Selection depends on regulatory compliance requirements for your application.

Q: Why is the ALZ22B18 listed as obsolete?

A: The ALZ22B18 has been superseded by the ALZ52B series variants. The ALZ52B18, ALZ52B18T, and ALZ52B18W provide identical performance with active product status and improved availability.

Q: Are there any differences in PCB footprint or pin configuration between these parts?

A: No. All parts share identical through-hole PC pin termination and mounting specifications. PCB layouts designed for ALZ22B18 require no modification for ALZ52B18 series substitution.

Q: What is the inventory status of these substitutes?

A: ALZ52B18: 755 Pcs, ALZ52B18T: 823 Pcs, ALZ52B18W: 1069 Pcs. All are available as new original stock.

Q: Do these relays require any special handling or storage conditions?

A: All parts carry Moisture Sensitivity Level (MSL) 1 (Unlimited), indicating no special moisture control requirements during storage or handling.

Q: Are these parts suitable for high-temperature applications?

A: Yes. All parts operate across the -40°C to 85°C temperature range with Class B coil insulation, supporting industrial control applications in standard environmental conditions.