ALE7PB12 Equivalent & Substitute Parts

Part Overview

The ALE7PB12 is a general purpose relay manufactured by Panasonic Electric Works, featuring a SPST-NO (1 Form A) contact configuration with a 12VDC coil. This through-hole mounted relay is rated for 16A at 277VAC maximum switching voltage and is designed for non-latching applications. The part is currently obsolete, making identification of suitable substitute components essential for ongoing system maintenance and new design implementations.

Substiute Parts

ALE7PB12

Panasonic Electric WorksIn Stock: 766ALE7PB12 Datasheet

Current PartRFQ

ALZN5B12W

Panasonic Electric WorksIn Stock: 1246ALZN5B12W Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the ALE7PB12 is determined by the following critical parameters:

• Contact Configuration: SPST-NO (1 Form A) — the substitute must provide identical switching topology
• Coil Voltage: 12VDC — the substitute must operate at the same nominal coil voltage
• Current Rating: 16A minimum — the substitute must support at least this contact current capacity
• Mounting Type: Through Hole with PC Pin termination — physical and electrical interface compatibility
• Operating Temperature: -40°C ~ 85°C — the substitute must function within this range
• Contact Material: Silver Tin Oxide (AgSnO) — ensures compatible switching characteristics

The ALZN5B12W meets all these criteria while offering enhanced electrical performance and active product status.

Parameter Comparison

Engineering Selection Recommendations

The ALZN5B12W is a direct functional substitute for the obsolete ALE7PB12. Both relays share identical contact configuration, coil voltage, and current rating. The ALZN5B12W offers superior electrical performance with higher maximum switching voltage (440VAC vs. 277VAC) and greater load capacity (7040VA vs. 4432VA), making it suitable for applications requiring the original ALE7PB12 specifications.

The ALZN5B12W maintains active product status with current manufacturing support and ROHS3 compliance, eliminating obsolescence concerns. Both relays carry equivalent regulatory approvals (VDE certification present on both). The sealed flux protection rating on the ALZN5B12W provides enhanced environmental protection compared to the original part.

Coil current is higher on the ALZN5B12W (33.3 mA vs. 16.7 mA), requiring circuit design verification to ensure driver capability. Operate and release times are faster on the substitute (15 ms and 5 ms respectively), which may require timing validation in time-critical applications.

Frequently Asked Questions (FAQ)

Q: Can the ALZN5B12W directly replace the ALE7PB12 in existing PCB designs?

A: Yes, both relays feature identical through-hole PC pin termination and SPST-NO contact configuration. Physical footprint compatibility is maintained. However, the increased coil current (33.3 mA vs. 16.7 mA) requires verification that the driving circuit can supply the additional current.

Q: What are the key differences between these two relays?

A: The ALZN5B12W provides higher switching voltage capability (440VAC vs. 277VAC), greater load capacity (7040VA vs. 4432VA), faster switching times, and sealed flux protection. The trade-off is increased coil current consumption.

Q: Is the ALZN5B12W suitable for high-voltage applications?

A: The ALZN5B12W is rated for 440VAC maximum switching voltage, exceeding the original ALE7PB12 specification of 277VAC. This makes it suitable for applications requiring higher voltage switching capability within the 16A current rating.

Q: What packaging differences exist between these parts?

A: The ALE7PB12 uses standard packaging, while the ALZN5B12W is supplied in tray packaging. Both are through-hole mounted components with PC pin termination.

Q: Are there regulatory compliance differences?

A: Both relays carry VDE certification. The ALZN5B12W includes cURus approval and ROHS3 compliance, while the ALE7PB12 carries CSA, TUV, UR, and VDE approvals. Both meet relevant regulatory requirements for their respective applications.

Q: How do the operating characteristics compare?

A: The ALZN5B12W operates faster (15 ms vs. 20 ms) and releases faster (5 ms vs. 25 ms). It also has a lower must-operate voltage (8.4 VDC vs. 9 VDC), providing slightly better sensitivity. These differences should be evaluated for time-critical or low-voltage applications.