ALFG1PF18 General Purpose Relay - Equivalent & Substitute Parts

Part Overview

The ALFG1PF18 is a general purpose relay manufactured by Panasonic Electric Works, configured as a single-pole single-throw normally open (SPST-NO) contact form with an 18VDC coil. This through-hole mounted relay is designed for switching applications up to 22A at 250VAC maximum, with a maximum switching load of 5500VA. The part is currently active in production with 1210 units in stock. Substitute parts are identified when equivalent electrical and mechanical parameters are maintained across the same product series, enabling direct replacement in circuit designs without functional compromise.

Substiute Parts

ALFG1PF18

Panasonic Electric WorksIn Stock: 1274ALFG1PF18 Datasheet

Current PartRFQ

ALFG1PF181

Panasonic Electric WorksIn Stock: 1181ALFG1PF181 Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

The ALFG1PF181 is identified as a parametric equivalent to the ALFG1PF18 based on strict alignment of the following critical parameters:

• Coil voltage: 18VDC (identical)
• Contact form: SPST-NO (1 Form A) (identical)
• Contact rating: 22 A (identical)
• Switching voltage maximum: 250VAC (identical)
• Maximum switching load: 5500VA (identical)
• Mounting type: Through hole (identical)
• Termination style: PC pin (identical)
• Coil resistance: 230 Ohms (identical)
• Coil current: 78 mA (identical)
• Operating temperature range: -40°C to 60°C (identical)
• Contact material: Silver Tin Oxide (AgSnO) (identical)
• Approval agencies: cURus, VDE (identical)
• RoHS compliance: ROHS3 Compliant (identical)

Both parts belong to the ALFG series and maintain identical electrical and mechanical specifications, confirming direct substitution capability.

Parameter Comparison

Engineering Selection Recommendations

Both the ALFG1PF18 and ALFG1PF181 are active production parts from Panasonic Electric Works with identical electrical and mechanical specifications. Selection between these parts should be based on inventory availability and supply chain considerations. The ALFG1PF18 maintains higher stock levels at 1210 units compared to 1137 units for the ALFG1PF181. Both parts carry cURus and VDE approvals and maintain ROHS3 compliance, confirming suitability for regulated applications. The ALFG1PF181 carries REACH Unaffected status, while the ALFG1PF18 status is vendor undefined; this distinction does not affect functional equivalence. Direct substitution is supported without circuit redesign or performance compromise.

Frequently Asked Questions (FAQ)

Q: Can ALFG1PF181 be used as a direct replacement for ALFG1PF18?

A: Yes. Both parts maintain identical coil voltage (18VDC), contact form (SPST-NO), current rating (22A), switching voltage (250VAC), and all other electrical and mechanical parameters. Direct substitution is supported without modification.

Q: Are there any differences in approval certifications between these parts?

A: Both parts carry cURus and VDE approvals. The ALFG1PF181 specifies REACH Unaffected status, while ALFG1PF18 status is vendor undefined. This does not affect functional equivalence or regulatory compliance for switching applications.

Q: Do these relays have identical mounting and termination?

A: Yes. Both parts are through-hole mounted with PC pin termination, ensuring identical PCB footprint and assembly compatibility.

Q: What is the coil resistance and current draw for these relays?

A: Both parts have 230 Ohms coil resistance and 78 mA coil current at 18VDC, resulting in identical power consumption and circuit design requirements.

Q: Are both parts RoHS compliant?

A: Yes. Both ALFG1PF18 and ALFG1PF181 are ROHS3 compliant, meeting environmental and hazardous substance restrictions.

Q: What is the maximum switching capacity of these relays?

A: Both parts support 22A contact rating at 250VAC maximum switching voltage, with a maximum switching load of 5500VA.