ALZ22F12 Equivalent & Substitute Parts

Part Overview

The ALZ22F12 is a general purpose relay manufactured by Panasonic Electric Works, configured as a SPST-NO (1 Form A) with 12VDC coil voltage and 16A contact rating. This through-hole mounted relay is designed for general switching applications with sealed construction and Class F coil insulation. The ALZ22F12 is currently obsolete, making identification of equivalent and substitute parts essential for ongoing system support and component procurement.

Key Parameters

Parameter	Value
Manufacturer Part Number	ALZ22F12
Manufacturer	Panasonic Electric Works
Coil Voltage	12VDC
Contact Form	SPST-NO (1 Form A)
Contact Rating (Current)	16 A
Switching Voltage (Max)	440VAC
Mounting Type	Through Hole
Coil Resistance	360 Ohms
Coil Current	33.3 mA
Operating Temperature Range	-40°C ~ 105°C
Product Status	Obsolete

Substitute Part Grouping Explanation

Substitution of the ALZ22F12 is determined by strict equivalence across the following critical parameters:

Coil voltage: 12VDC
Contact form: SPST-NO (1 Form A)
Contact rating: 16A minimum
Mounting type: Through Hole
Coil resistance: 360 Ohms
Coil current: 33.3 mA
Termination style: PC Pin
Coil type: Non Latching

Substitute parts are grouped into two categories:

Parametric Equivalents maintain identical electrical and mechanical specifications across all critical parameters. These parts are direct replacements with no functional differences.

Similar Parts share the same contact form, coil voltage, current rating, and mounting type but may differ in switching voltage capability, operating temperature range, contact material, or seal rating. These parts are functionally compatible for most applications but require verification of specific environmental or load requirements.

Parameter Comparison

Parameter	ALZ22F12	ALZ52F12	ALZ52F12T	1-1415527-1	1-1415536-9	4-1415536-2	4-1415899-9	7-1415899-2	8-1415047-1	RT33K012	RT33L012
Manufacturer	Panasonic	Panasonic	Panasonic	TE Connectivity	TE Connectivity	TE Connectivity	TE Connectivity	TE Connectivity	TE Connectivity	TE Connectivity	TE Connectivity
Coil Voltage	12VDC	12VDC	12VDC	12VDC	12VDC	12VDC	12VDC	12VDC	12VDC	12VDC	12VDC
Contact Form	SPST-NO	SPST-NO	SPST-NO	SPST-NO	SPST-NO	SPST-NO	SPST-NO	SPST-NO	SPST-NO	SPST-NO	SPST-NO
Contact Rating	16A	16A	16A	16A	16A	16A	16A	16A	16A	16A	16A
Switching Voltage (Max)	440VAC	440VAC	440VAC	400VAC	400VAC	400VAC	400VAC	400VAC	400VAC	400VAC	400VAC
Coil Resistance	360Ω	360Ω	360Ω	360Ω	360Ω	360Ω	360Ω	360Ω	360Ω	360Ω	360Ω
Coil Current	33.3mA	33.3mA	33.3mA	33.3mA	33.3mA	33.3mA	33.3mA	33.3mA	33.3mA	33.3mA	33.3mA
Mounting Type	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole
Operating Temperature	-40°C ~ 105°C	-40°C ~ 105°C	-40°C ~ 105°C	-40°C ~ 85°C	-40°C ~ 105°C	-40°C ~ 105°C	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 105°C	-40°C ~ 85°C	-40°C ~ 85°C
Contact Material	Silver Tin Oxide (AgSnO)	Silver Tin Oxide (AgSnO)	Silver Tin Oxide (AgSnO)	Silver Nickel (AgNi)	Silver Nickel (AgNi)	Silver Nickel (AgNi)	Silver Nickel (AgNi)	Silver Nickel (AgNi)	Silver Nickel (AgNi)	Silver Nickel (AgNi)	Silver Tin Oxide (AgSnO)
Seal Rating	Sealed - Fully	Sealed - Fully	Sealed - Fully	Sealed - Flux Protection	Not Specified	Not Specified	Not Specified	Not Specified	Not Specified	Sealed - Flux Protection	Sealed - Flux Protection
Product Status	Obsolete	Active	Active	Obsolete	Obsolete	Obsolete	Active	Active	Active	Active	Active
RoHS Status	Not Specified	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant

Engineering Selection Recommendations

Parametric Equivalents (Direct Replacements)

ALZ52F12 and ALZ52F12T are parametric equivalents manufactured by Panasonic Electric Works. Both maintain identical electrical specifications and operating characteristics to the ALZ22F12. Both are currently in active production status with ROHS3 compliance. ALZ52F12 is available in tube packaging with 2200 units in stock. ALZ52F12T is also tube packaged with 966 units in stock. These parts are suitable for direct substitution in all applications where the ALZ22F12 was originally specified.

Similar Parts with Extended Temperature Range

8-1415047-1 (TE Connectivity, RTH series) maintains the full -40°C ~ 105°C operating temperature range of the original ALZ22F12 while offering active product status and ROHS3 compliance. This part is available in tube packaging with 853 units in stock. Contact material differs (Silver Nickel vs. Silver Tin Oxide), and seal rating is not specified. This part is suitable for applications requiring the extended upper temperature limit.

Similar Parts with Reduced Temperature Range

4-1415899-9, 7-1415899-2, RT33K012, and RT33L012 operate within -40°C ~ 85°C temperature range, which is 20°C lower than the original specification. These parts are suitable only for applications where the maximum operating temperature does not exceed 85°C. All four parts are currently in active production with ROHS3 compliance and adequate inventory availability.

Obsolete Similar Parts

1-1415527-1, 1-1415536-9, and 4-1415536-2 are obsolete TE Connectivity parts. While functionally compatible, these parts should be avoided for new designs or long-term procurement due to discontinued production status.

Frequently Asked Questions (FAQ)

Q: Can ALZ52F12 or ALZ52F12T be used as direct replacements for ALZ22F12?

A: Yes. ALZ52F12 and ALZ52F12T are parametric equivalents with identical coil voltage (12VDC), contact form (SPST-NO), contact rating (16A), coil resistance (360Ω), and operating temperature range (-40°C ~ 105°C). Both are active products with ROHS3 compliance.

Q: What is the difference between ALZ52F12 and ALZ52F12T?

A: Both parts are parametric equivalents with identical electrical and mechanical specifications. The difference is in packaging designation, with ALZ52F12T indicating a specific tube packaging variant. Electrical performance is identical.

Q: Why do TE Connectivity parts show 400VAC maximum switching voltage instead of 440VAC?

A: The TE Connectivity substitute parts are rated for 400VAC maximum switching voltage, which is 40VAC lower than the ALZ22F12 specification of 440VAC. These parts are suitable for applications operating at or below 400VAC. Applications requiring 440VAC switching capability should use ALZ52F12 or ALZ52F12T.

Q: Can I use parts with -40°C ~ 85°C temperature range in place of the ALZ22F12?

A: Parts with -40°C ~ 85°C operating range (4-1415899-9, 7-1415899-2, RT33K012, RT33L012) are suitable only if your application does not require operation above 85°C. The ALZ22F12 is rated to 105°C. Verify your system's maximum operating temperature before selecting these alternatives.

Q: What is the difference between Silver Tin Oxide (AgSnO) and Silver Nickel (AgNi) contact materials?

A: Both materials are standard relay contact materials. Silver Tin Oxide is used in ALZ22F12, ALZ52F12, ALZ52F12T, and RT33L012. Silver Nickel is used in TE Connectivity RTH and RZ series parts. Contact material selection is based on load characteristics and application requirements. Substitution between materials is acceptable for general purpose switching applications with equivalent current ratings.

Q: Are all substitute parts ROHS3 compliant?

A: All active substitute parts listed (ALZ52F12, ALZ52F12T, 4-1415899-9, 7-1415899-2, 8-1415047-1, RT33K012, RT33L012) are ROHS3 compliant. The original ALZ22F12 does not specify RoHS status. Obsolete parts (1-1415527-1, 1-1415536-9, 4-1415536-2) are ROHS3 compliant but are no longer in production.

Q: What packaging options are available for substitute parts?

A: ALZ52F12 and ALZ52F12T are available in tube packaging. 8-1415047-1 is available in tube packaging. TE Connectivity RZ and RTH series parts (4-1415899-9, 7-1415899-2) are available in bulk packaging. Verify packaging requirements for your procurement and assembly processes.

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