CM1A-P-12V Equivalent & Substitute Parts

Part Overview

The CM1A-P-12V is a 12VDC automotive relay manufactured by Panasonic Electric Works, featuring SPST-NO contact configuration with 35A switching capacity. This component is classified as obsolete, making equivalent substitute parts necessary for ongoing system maintenance and new design implementations. The relay operates with a 125 mA coil current and includes fully sealed construction suitable for automotive environments.

Substiute Parts

CM1A-P-12V

Panasonic Electric WorksIn Stock: 1113CM1A-P-12V Datasheet

Current PartRFQ

CB1A-P-12V

Panasonic Electric WorksIn Stock: 2419CB1A-P-12V Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

The CB1A-P-12V qualifies as a direct substitute based on the following alignment of critical parameters:

• Identical coil voltage (12VDC)
• Identical contact form (SPST-NO)
• Identical mounting type (Through Hole)
• Identical termination style (PC Pin)
• Identical operating temperature range (-40°C ~ 85°C)
• Identical contact material (Silver Alloy, Cadmium Free)
• Identical sealing specification (Fully Sealed)
• Identical manufacturer (Panasonic Electric Works)

The CB1A-P-12V provides enhanced contact rating (40A versus 35A), lower coil current (117 mA versus 125 mA), and active product status, making it suitable for direct replacement in CM1A-P-12V applications.

Parameter Comparison

Engineering Selection Recommendations

The CB1A-P-12V is the qualified substitute for CM1A-P-12V applications. Selection is based on:

• Active product status of CB1A-P-12V ensures long-term availability and supply chain continuity
• ROHS3 compliance of CB1A-P-12V meets current regulatory requirements
• Identical electrical and mechanical specifications across all critical parameters
• Enhanced contact rating (40A) provides margin above the original 35A specification
• Reduced coil current (117 mA) results in lower power consumption
• Both components maintain REACH Unaffected and EAR99 classifications

Frequently Asked Questions (FAQ)

Q: Can CB1A-P-12V directly replace CM1A-P-12V in existing designs?

A: Yes. The CB1A-P-12V maintains identical coil voltage, contact form, mounting type, termination style, and operating temperature range. The higher contact rating (40A versus 35A) and lower coil current (117 mA versus 125 mA) are compatible with CM1A-P-12V circuit requirements.

Q: What are the differences in switching speed between these relays?

A: The CB1A-P-12V has longer operate and release times (15 ms each) compared to the CM1A-P-12V (10 ms each). This difference must be evaluated against application timing requirements.

Q: Are there packaging differences between these parts?

A: The CM1A-P-12V is supplied in standard packaging, while the CB1A-P-12V is supplied in bulk packaging. Both use identical Through Hole mounting with PC Pin termination.

Q: What is the regulatory compliance status of the substitute?

A: The CB1A-P-12V is ROHS3 compliant and REACH Unaffected. Both components are classified as EAR99 for export control purposes.

Q: Why is the original CM1A-P-12V obsolete?

A: The CM1A-P-12V is classified as obsolete by the manufacturer. The CB1A-P-12V from the same manufacturer provides equivalent functionality with active product status and improved specifications.