JQ1AP-3V Equivalent & Substitute Parts

Part Overview

The JQ1AP-3V is a general purpose relay manufactured by Panasonic Electric Works, featuring a SPST-NO (1 Form A) contact configuration with a 3VDC coil. This through-hole mounted relay is rated for 10A at 250VAC or 110VDC maximum switching voltage. The product is currently obsolete, making identification of functionally equivalent alternatives necessary for ongoing maintenance, repair, and legacy system support applications.

Substiute Parts

JQ1AP-3V

Panasonic Electric WorksIn Stock: 827JQ1AP-3V Datasheet

Current PartRFQ

SDT-S-103LMR,000

TE Connectivity Potter & Brumfield RelaysIn Stock: 967SDT-S-103LMR,000 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the JQ1AP-3V is determined by the following critical parameters:

• Coil Voltage: Must be 3VDC to ensure direct compatibility with existing circuit designs
• Contact Form: Must be SPST-NO (1 Form A) to maintain identical switching functionality
• Mounting Type: Must be through-hole to fit existing PCB layouts and mechanical assemblies
• Termination Style: Must be PC Pin for direct connection compatibility
• Coil Type: Must be non-latching to preserve operational behavior

The SDT-S-103LMR,000 from TE Connectivity Potter & Brumfield Relays meets these core substitution criteria. However, the contact current rating differs: the substitute is rated for 5A versus the original 10A. This represents a functional limitation that must be evaluated against actual circuit requirements.

Parameter Comparison

Engineering Selection Recommendations

The SDT-S-103LMR,000 provides functional substitution for the JQ1AP-3V based on matching coil voltage, contact form, mounting type, and termination style. The substitute is currently in active production status, ensuring availability for replacement applications.

Key considerations for selection:

• The substitute's 5A contact rating is lower than the original 10A specification. Applications requiring the full 10A switching capacity cannot use this substitute.
• The substitute's maximum DC switching voltage is 30VDC compared to the original 110VDC. Applications involving higher DC voltages require verification against actual circuit requirements.
• Operating temperature range is reduced by 10°C at the lower end (-30°C versus -40°C). Cold environment applications must confirm compatibility.
• Operate and release times are longer in the substitute (15ms and 5ms respectively versus 5ms and 2ms). Time-critical switching applications require evaluation.
• The substitute carries RoHS3 compliance certification, whereas the original part's compliance status is not specified.

Frequently Asked Questions (FAQ)

Q: Can the SDT-S-103LMR,000 directly replace the JQ1AP-3V in all applications?

A: Direct replacement is possible only in applications where the circuit load does not exceed 5A. The substitute's lower current rating and reduced maximum DC switching voltage must be verified against actual circuit specifications before implementation.

Q: What are the mechanical compatibility considerations?

A: Both relays feature through-hole mounting with PC pin termination, ensuring identical PCB footprint compatibility. Physical dimensions and pin spacing are compatible for direct board-level substitution.

Q: How do the switching time differences affect circuit operation?

A: The SDT-S-103LMR,000 has longer operate time (15ms versus 5ms) and release time (5ms versus 2ms). Applications with timing-sensitive switching requirements must evaluate whether these delays are acceptable.

Q: What compliance differences exist between the two parts?

A: The SDT-S-103LMR,000 is RoHS3 compliant and carries active product status. The JQ1AP-3V is obsolete. Both parts are REACH unaffected and carry EAR99 ECCN classification.

Q: Are there coil drive circuit modifications needed?

A: The substitute requires slightly higher coil current (83.3mA versus 66.7mA) and has lower coil resistance (36 Ohms versus 45 Ohms). Existing drive circuits must be verified to supply adequate current without exceeding component ratings.