JQ1P-B-18V-F Equivalent & Substitute Parts

Part Overview

The JQ1P-B-18V-F is a general purpose relay manufactured by Panasonic Electric Works, featuring SPDT (1 Form C) contact configuration with 18VDC coil voltage and 10A contact rating. This component is classified as obsolete, making identification of suitable substitute parts essential for ongoing system maintenance and new design implementations. The relay is designed for through-hole mounting with PC pin termination and operates across an industrial temperature range of -40°C to 85°C.

Substiute Parts

JQ1P-B-18V-F

Panasonic Electric WorksIn Stock: 1050JQ1P-B-18V-F Datasheet

Current PartRFQ

ALQ118

Panasonic Electric WorksIn Stock: 1297ALQ118 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the JQ1P-B-18V-F is determined by the following critical parameters that must remain consistent:

• Coil voltage: 18VDC (exact match required)
• Contact form: SPDT (1 Form C) configuration
• Coil current: 22.2 mA (determines drive circuit compatibility)
• Coil resistance: 810 Ohms (ensures proper circuit operation)
• Mounting type: Through Hole with PC Pin termination
• Operating temperature range: -40°C ~ 85°C minimum
• RoHS compliance status

The ALQ118 meets these core substitution criteria. However, the contact rating differs: the JQ1P-B-18V-F supports 10A while the ALQ118 supports 5A maximum. This represents a functional limitation that must be evaluated against specific application requirements. The switching voltage specification also differs, with the ALQ118 rated for 250VAC and 30VDC maximum versus the original part's 250VAC and 110VDC maximum rating.

Parameter Comparison

Engineering Selection Recommendations

The ALQ118 is the identified substitute for the obsolete JQ1P-B-18V-F based on matching core electrical and mechanical parameters. Both relays share identical coil specifications (18VDC, 22.2 mA, 810 Ohms), contact configuration (SPDT), mounting method (through-hole PC pin), and operating temperature range.

The ALQ118 holds active product status with current manufacturing support from Panasonic Electric Works, providing supply chain continuity for the JQ1P-B-18V-F. Both components maintain RoHS compliance and equivalent coil insulation ratings.

Functional differences exist in contact current rating (5A versus 10A), DC switching voltage maximum (30VDC versus 110VDC), and contact material composition (Silver Nickel versus Silver Tin Oxide). The ALQ118 also exhibits a longer release time (20ms versus 10ms) and operates at a lower must-operate voltage (14.6VDC versus 14.4VDC).

Selection of the ALQ118 as a substitute requires verification that application load currents do not exceed 5A and that DC switching voltages remain within the 30VDC maximum specification. The different contact material and extended release time must be evaluated against specific switching performance requirements.

Frequently Asked Questions (FAQ)

Q: Can the ALQ118 directly replace the JQ1P-B-18V-F in all applications?

A: The ALQ118 matches the core coil and contact configuration specifications. However, the reduced contact current rating (5A maximum versus 10A) and lower DC switching voltage limit (30VDC versus 110VDC) require application-specific verification. Direct substitution is valid only when load currents remain below 5A and DC switching voltages do not exceed 30VDC.

Q: What is the significance of the different contact materials?

A: The JQ1P-B-18V-F uses Silver Tin Oxide (AgSnO) contacts while the ALQ118 uses Silver Nickel (AgNi) contacts. These materials exhibit different wear characteristics, contact resistance, and suitability for specific load types. Application requirements for contact material performance must be evaluated independently.

Q: Why does the ALQ118 have a longer release time?

A: The ALQ118 specifies a 20ms release time compared to the JQ1P-B-18V-F's 10ms release time. This difference may impact timing-critical applications. Systems dependent on rapid relay de-energization must account for this extended release interval.

Q: Are both relays suitable for the same circuit board layout?

A: Both relays feature through-hole mounting with PC pin termination and identical operating temperature ranges. Physical footprint compatibility requires verification against specific PCB design specifications, though the matching mounting type and termination style indicate layout compatibility.

Q: What compliance certifications apply to the ALQ118?

A: The ALQ118 holds CQC, cURuus, and VDE approvals in addition to RoHS compliance. These certifications align with the JQ1P-B-18V-F's RoHS status, supporting use in regulated applications.

Q: How does the lower must-operate voltage of the ALQ118 affect circuit design?

A: The ALQ118 operates reliably at 14.6VDC minimum versus the JQ1P-B-18V-F's 14.4VDC minimum. This lower threshold provides improved performance margin in circuits with voltage supply variations, though it does not affect compatibility with standard 18VDC coil drive circuits.