ALZ51F09 General Purpose Relay SPST 16A 9VDC

Part Overview

The ALZ51F09 is a general purpose relay manufactured by Panasonic Electric Works, configured as a single-pole single-throw normally open (SPST-NO) contact form with a 9VDC coil. This through-hole mounted relay is designed for switching applications up to 16A at 440VAC maximum, with a load capacity of 7040VA. The part is currently active in production status. Equivalent and substitute parts become necessary when the primary part experiences supply constraints, obsolescence of related product lines, or when design flexibility across manufacturing sources is required for production continuity.

Substiute Parts

ALZ51F09

Panasonic Electric WorksIn Stock: 848ALZ51F09 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 ALZ51F09 are qualified based on the following critical parameters that must match or exceed the main part specifications:

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 Type: Non Latching

Allowable Variation Parameters:

• Switching Voltage: Substitute must support minimum 400VAC (main part: 440VAC max)
• Operating Temperature Range: Substitute minimum -40°C to 85°C acceptable (main part: -40°C to 105°C)
• Contact Material: Silver Tin Oxide or Silver Nickel acceptable
• Coil Resistance: 200-203 Ohms acceptable
• Operate/Release Time: Minor variations acceptable within relay response characteristics

The identified substitute parts 1-1415540-6 and RZ03-1A4-D009 meet these criteria and are electrically and mechanically compatible for direct substitution in the ALZ51F09 application.

Parameter Comparison

Engineering Selection Recommendations

ALZ51F09 (Primary Selection): The ALZ51F09 remains the preferred choice for new designs and ongoing production. It maintains active product status with full manufacturer support, RoHS compliance, and the widest operating temperature range (-40°C to 105°C). Current inventory of 791 units is available.

RZ03-1A4-D009 (Recommended Substitute): The RZ03-1A4-D009 is the primary substitute option. It carries active product status, ROHS3 compliance, and maintains all critical electrical parameters. The operating temperature range extends to 85°C, which covers most industrial applications. With 2114 units in stock, this part provides superior supply availability. The faster operate time (8 ms vs. 15 ms) and slightly lower coil resistance (200 Ohms vs. 203 Ohms) are within acceptable engineering tolerances for general purpose relay applications.

1-1415540-6 (Secondary Substitute): The 1-1415540-6 is classified as obsolete and should be used only when supply of active alternatives is exhausted. Although it maintains the same operating temperature range as the main part and identical coil resistance, its obsolete status limits long-term availability. This part is suitable for legacy system repairs or temporary production continuity only.

Frequently Asked Questions (FAQ)

Q: Can RZ03-1A4-D009 be used in applications requiring operation above 85°C? A: No. The RZ03-1A4-D009 has a maximum operating temperature of 85°C, while the ALZ51F09 extends to 105°C. For applications requiring the full 105°C range, the ALZ51F09 must be used.

Q: What is the impact of the 40VAC difference in switching voltage between the main part and substitutes? A: The ALZ51F09 supports 440VAC maximum switching voltage, while both substitutes support 400VAC maximum. For applications switching voltages above 400VAC, the ALZ51F09 is required. For applications at or below 400VAC, either part is acceptable.

Q: Are the operate and release time differences between parts significant? A: The ALZ51F09 has operate time of 15 ms and release time of 5 ms, while both substitutes have 8 ms operate time and 6 ms release time. These differences are within typical relay response characteristics. Applications with strict timing requirements should verify compatibility with the specific substitute part's response profile.

Q: Why is 1-1415540-6 listed as obsolete? A: The 1-1415540-6 is classified as obsolete by the manufacturer, indicating it is no longer in active production. While current inventory exists (1154 units), future availability cannot be guaranteed. This part should not be selected for new designs.

Q: Are all three parts pin-compatible for PCB mounting? A: Yes. All three parts use PC Pin termination style and through-hole mounting, making them mechanically compatible for direct PCB substitution without layout modifications.

Q: What compliance certifications apply to these parts? A: The ALZ51F09 holds cURus and VDE approvals with RoHS compliance. Both substitutes carry ROHS3 compliance. The 1-1415540-6 is REACH Affected, while the RZ03-1A4-D009 is REACH Unaffected.