DA3C-B1LB Equivalent & Substitute Parts

Part Overview

The DA3C-B1LB is a snap-action SPDT switch manufactured by ZF Electronics, rated for 0.1A at 125V AC with a straight lever actuator and chassis mount configuration. This component is classified as obsolete, making identification of functionally equivalent alternatives essential for ongoing system support and component procurement.

The DA3C-B1LB operates in an On-Momentary configuration with a 27gf operating force and 100,000 cycle electrical life rating. Due to its obsolete status, sourcing direct replacements requires evaluation of active alternatives that maintain electrical and mechanical compatibility within the specified parameter ranges.

Substiute Parts

DA3C-B1LB

ZF ElectronicsIn Stock: 1027DA3C-B1LB Datasheet

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DB3C-B1LC

ZF ElectronicsIn Stock: 958DB3C-B1LC Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the DA3C-B1LB is determined by strict equivalence in the following critical parameters:

• Circuit and Function: SPDT configuration with On-Momentary operation
• Electrical Ratings: 100mA AC current and 125V AC voltage minimum
• Mechanical Interface: Straight lever actuator, chassis mount, and Quick Connect 0.110" (2.8mm) termination
• Environmental Compliance: Operating temperature range and lifecycle ratings

The DB3C-B1LC qualifies as a substitute based on matching all mandatory electrical and mechanical parameters. Variations in operating force (27gf vs. 50gf), operating position, pretravel, and differential travel remain within acceptable tolerances for SPDT snap-action switch applications. The DB3C-B1LC provides enhanced environmental protection (IP50) and extended operating temperature range (-40°C to 120°C), with verified mechanical life of 15,000,000 cycles.

Parameter Comparison

Engineering Selection Recommendations

The DB3C-B1LC is the qualified substitute for the obsolete DA3C-B1LB. Both components are manufactured by ZF Electronics and maintain identical electrical specifications (100mA AC, 125V AC) and mechanical interface (SPDT, On-Momentary, straight lever, chassis mount, Quick Connect termination).

The DB3C-B1LC offers advantages in product lifecycle status (Active vs. Obsolete), regulatory compliance (ROHS3 Compliant vs. Non-compliant), and environmental performance (IP50 ingress protection, extended temperature range to 120°C, documented mechanical life of 15,000,000 cycles). These characteristics support long-term component availability and system reliability.

Mechanical parameter variations (operating force, position, pretravel, overtravel) are within normal tolerances for snap-action switch substitution and do not affect electrical circuit compatibility or switching performance at the specified ratings.

Frequently Asked Questions (FAQ)

Q: Can the DB3C-B1LC directly replace the DA3C-B1LB in existing applications?

A: Yes. Both components share identical electrical ratings (100mA AC, 125V AC), circuit configuration (SPDT), switch function (On-Momentary), actuator type (straight lever), mounting method (chassis mount), and termination style (Quick Connect 0.110"). Mechanical parameter differences do not affect switching performance or circuit compatibility.

Q: What are the key differences between these two parts?

A: The DB3C-B1LC provides enhanced specifications: IP50 dust protection, extended operating temperature range (-40°C to 120°C vs. -40°C to 85°C), higher operating force (50gf vs. 27gf), documented mechanical life (15,000,000 cycles), and ROHS3 compliance. The DA3C-B1LB is obsolete; the DB3C-B1LC is active production.

Q: Are there packaging differences?

A: The DA3C-B1LB packaging is not specified in available data. The DB3C-B1LC is supplied in Bulk packaging. Confirm packaging requirements with your procurement specification.

Q: Does the higher operating force of the DB3C-B1LC affect compatibility?

A: No. The 50gf operating force of the DB3C-B1LC remains within standard snap-action switch operating ranges and does not compromise electrical performance or circuit switching characteristics at the specified 100mA AC, 125V AC ratings.

Q: What is the significance of ROHS3 compliance on the DB3C-B1LC?

A: ROHS3 compliance indicates the DB3C-B1LC meets current environmental and hazardous substance restrictions, supporting regulatory requirements for new system designs and long-term component sourcing. The DA3C-B1LB, as a non-compliant component, may face procurement restrictions in regulated applications.