Equivalent & Substitute Parts for ALZ22B09W

Part Overview

The ALZ22B09W is a general purpose relay manufactured by Panasonic Electric Works, configured as a SPST-NO (1 Form A) with a 9VDC coil and 16A contact rating. This through-hole mounted relay is designed for general switching applications with a maximum switching voltage of 440VAC and load capacity of 7040VA. The product is currently obsolete, making equivalent substitute parts necessary for ongoing maintenance, repair, and legacy system support where direct replacement is required.

Substiute Parts

ALZ22B09W

Panasonic Electric WorksIn Stock: 711ALZ22B09W Datasheet

Current PartRFQ

1-1415540-6

TE Connectivity Potter & Brumfield RelaysIn Stock: 12271-1415540-6 Datasheet

SimilarRFQ

RZ03-1A4-D009

TE Connectivity Potter & Brumfield RelaysIn Stock: 2193RZ03-1A4-D009 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the ALZ22B09W are qualified based on the following critical parameters that must match or exceed the original specification:

Mandatory Matching Parameters:

• Coil Voltage: 9VDC
• Contact Form: SPST-NO (1 Form A)
• Contact Rating (Current): 16 A minimum
• Mounting Type: Through Hole
• Termination Style: PC Pin
• Coil Resistance: 203 Ohms (±tolerance)

Allowable Variations:

• Switching Voltage: Substitute must support minimum 440VAC
• Operating Temperature Range: Substitute may extend the range
• Coil Insulation Class: May differ (Class B to Class F acceptable)
• Contact Material: May differ (AgSnO to AgNi acceptable)
• Operate/Release Time: Minor variations acceptable within switching performance requirements

The identified substitute parts meet these criteria and are suitable for direct replacement in applications requiring the ALZ22B09W specification.

Parameter Comparison

Engineering Selection Recommendations

RZ03-1A4-D009 (Recommended Primary Substitute)

The RZ03-1A4-D009 is the preferred substitute for the ALZ22B09W. This part maintains active product status with current manufacturing availability, ensuring long-term supply chain reliability. It meets all mandatory electrical parameters including 9VDC coil voltage, SPST-NO contact form, 16A current rating, and PC pin termination. The coil resistance of 200 Ohms is within acceptable tolerance of the original 203 Ohms specification. Both parts share identical must-operate and must-release voltage thresholds (6.3 VDC and 0.9 VDC respectively), ensuring compatible circuit behavior. The RZ03-1A4-D009 carries ROHS3 compliance and REACH unaffected status, matching the regulatory profile of the original part. Operating temperature range matches the ALZ22B09W at -40°C to 85°C. The faster switching times (8 ms operate, 6 ms release versus 15 ms and 5 ms) represent an improvement in response characteristics.

1-1415540-6 (Secondary Substitute)

The 1-1415540-6 provides an alternative substitute with identical electrical specifications to the ALZ22B09W, including coil voltage, contact form, current rating, and coil resistance. However, this part is also obsolete, limiting its suitability for applications requiring long-term component availability. The switching voltage specification of 400VAC is lower than the original 440VAC maximum, which may restrict use in high-voltage switching applications. The extended operating temperature range (-40°C to 105°C) exceeds the original specification. ROHS3 compliance is confirmed, though REACH affected status differs from the original part's REACH unaffected designation.

Frequently Asked Questions (FAQ)

Q: Can the RZ03-1A4-D009 directly replace the ALZ22B09W in existing circuit boards?

A: Yes. The RZ03-1A4-D009 is a direct pin-compatible replacement with identical through-hole PC pin termination, coil voltage (9VDC), contact form (SPST-NO), and current rating (16A). The coil resistance of 200 Ohms is within acceptable tolerance of the original 203 Ohms. No circuit modifications are required.

Q: What is the significance of the switching voltage difference between the ALZ22B09W (440VAC) and the substitute parts (400VAC)?

A: The ALZ22B09W supports a maximum switching voltage of 440VAC, while both substitute parts are rated for 400VAC maximum. For applications switching voltages at or below 400VAC, both substitutes are fully compatible. Applications requiring switching above 400VAC but within the original 440VAC specification should use the ALZ22B09W if available, or evaluate circuit requirements with the 400VAC limitation.

Q: Why is the RZ03-1A4-D009 preferred over the 1-1415540-6?

A: The RZ03-1A4-D009 has active product status with current manufacturing, ensuring ongoing availability for future replacements and repairs. The 1-1415540-6 is obsolete, presenting potential supply chain constraints. Both parts meet the electrical requirements, but the active status of the RZ03-1A4-D009 provides superior long-term support.

Q: Are there any compliance differences between the main part and substitutes?

A: The ALZ22B09W and RZ03-1A4-D009 share identical REACH unaffected status and both carry ROHS3 compliance (RZ03-1A4-D009 explicitly confirmed). The 1-1415540-6 is REACH affected, which may impact regulatory compliance in certain jurisdictions or applications. For new designs or applications with strict compliance requirements, the RZ03-1A4-D009 is the preferred choice.

Q: Do the faster switching times of the substitute parts affect circuit operation?

A: The RZ03-1A4-D009 and 1-1415540-6 both operate faster (8 ms) than the ALZ22B09W (15 ms operate time). Faster switching generally improves response characteristics and is not detrimental to circuit function. However, if the original circuit design specifically depends on the 15 ms operate time for timing or synchronization purposes, this difference should be evaluated in the application context.

Q: What is the coil current requirement for these relays?

A: The ALZ22B09W and RZ03-1A4-D009 both require 44.4 mA coil current at 9VDC. The 1-1415540-6 coil current is not specified in available documentation. For circuit design purposes, use 44.4 mA as the standard coil current requirement for all three parts.