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ALE1PF18 Equivalent & Substitute Parts
Part Overview
The ALE1PF18 is a general purpose relay manufactured by Panasonic Electric Works, configured as a single-pole single-throw normally open (SPST-NO) device with an 18VDC coil. This through-hole mounted relay is rated for 16A switching capacity at 277VAC maximum and is designed for non-latching applications requiring reliable electromagnetic switching in industrial and commercial environments.
The ALE1PF18 is classified as obsolete. Identifying equivalent substitute parts ensures continued availability for maintenance, repair, and new production applications where this relay specification remains functionally required.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Coil Voltage | 18VDC |
| Contact Form | SPST-NO (1 Form A) |
| Contact Rating (Current) | 16 A |
| Switching Voltage - Max | 277VAC |
| Mounting Type | Through Hole |
| Termination Style | PC Pin |
| Coil Resistance | 810 Ohms |
| Coil Current | 22.2 mA |
| Operating Temperature Range | -40°C ~ 85°C |
Substitute Part Grouping Explanation
Substitution of the ALE1PF18 is determined by the following critical parameters:
- Coil Voltage: Must be 18VDC to ensure direct compatibility with existing circuit designs
- Contact Form: Must be SPST-NO (1 Form A) to maintain identical switching functionality
- Contact Rating (Current): Must be rated for minimum 16A to support the same load capacity
- Mounting Type: Must be through-hole to fit existing PCB layouts
- Termination Style: Must be PC Pin for direct connection compatibility
- Coil Resistance: Must be 810 Ohms to match circuit impedance requirements
The ALZN5F18W meets all critical substitution criteria while offering enhanced electrical performance characteristics and active product status.
Parameter Comparison
| Parameter | ALE1PF18 | ALZN5F18W |
|---|---|---|
| Manufacturer | Panasonic Electric Works | Panasonic Electric Works |
| Coil Voltage | 18VDC | 18VDC |
| Contact Form | SPST-NO (1 Form A) | SPST-NO (1 Form A) |
| Contact Rating (Current) | 16 A | 16 A |
| Switching Voltage - Max | 277VAC | 440VAC |
| Load - Max Switching | 4432VA | 7040VA |
| Coil Current | 22.2 mA | 22.2 mA |
| Mounting Type | Through Hole | Through Hole |
| Termination Style | PC Pin | PC Pin |
| Coil Resistance | 810 Ohms | 810 Ohms |
| Operating Temperature Range | -40°C ~ 85°C | -40°C ~ 105°C |
| Contact Material | Silver Tin Oxide (AgSnO) | Silver Tin Oxide (AgSnO) |
| Coil Insulation | Class F | Class F |
| Product Status | Obsolete | Active |
| RoHS Status | RoHS Compliant | ROHS3 Compliant |
| Approval Agency | CSA, TUV, UR, VDE | cURus, VDE |
Engineering Selection Recommendations
The ALZN5F18W is a direct functional substitute for the ALE1PF18. Both relays share identical coil voltage, contact form, current rating, mounting type, termination style, and coil resistance—the parameters that determine circuit compatibility and PCB integration.
The ALZN5F18W offers the following advantages:
- Active Product Status: Currently manufactured and supported by Panasonic Electric Works, ensuring long-term availability and supply chain reliability
- Enhanced Electrical Performance: Rated for 440VAC maximum switching voltage (versus 277VAC) and 7040VA maximum load (versus 4432VA), providing greater margin in high-voltage applications
- Extended Operating Temperature Range: Rated to 105°C (versus 85°C), suitable for higher ambient temperature environments
- Sealed Design: Includes flux protection sealing, offering improved environmental resistance
- Faster Release Time: 5ms release time (versus 20ms) enables quicker circuit de-energization
- Current Compliance Standards: ROHS3 Compliant and REACH Unaffected, meeting current regulatory requirements
Selection of the ALZN5F18W eliminates obsolescence risk while maintaining full electrical and mechanical compatibility with existing ALE1PF18 circuit designs.
Frequently Asked Questions (FAQ)
Q: Can the ALZN5F18W be used as a direct replacement for the ALE1PF18 in existing designs?
A: Yes. Both relays have identical coil voltage (18VDC), contact form (SPST-NO), current rating (16A), mounting type (through-hole), termination style (PC pin), and coil resistance (810 Ohms). No circuit modifications are required.
Q: What is the difference in packaging between these parts?
A: The ALE1PF18 uses standard packaging, while the ALZN5F18W is supplied in tray packaging. Both are through-hole mounted components with PC pin termination suitable for PCB assembly.
Q: Does the higher switching voltage rating of the ALZN5F18W affect compatibility?
A: No. The ALZN5F18W is rated for 440VAC maximum switching voltage, which exceeds the 277VAC requirement of the ALE1PF18. This provides additional safety margin and does not impact compatibility in applications designed for the lower voltage specification.
Q: Are there differences in operating temperature ranges?
A: The ALZN5F18W operates from -40°C to 105°C, compared to -40°C to 85°C for the ALE1PF18. The extended upper temperature limit of the ALZN5F18W makes it suitable for higher ambient temperature applications while remaining fully compatible with designs specified for the lower temperature range.
Q: What certifications apply to the ALZN5F18W?
A: The ALZN5F18W carries cURus and VDE approvals and is ROHS3 Compliant and REACH Unaffected, meeting current regulatory and environmental standards.
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