DA3C-F1LB Equivalent & Substitute Parts

Part Overview

The DA3C-F1LB 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 design continuity and procurement planning. The switch is designed for applications requiring reliable on-momentary switching with quick connect termination.

Substiute Parts

DA3C-F1LB

ZF ElectronicsIn Stock: 932DA3C-F1LB Datasheet

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DB3C-B1LC

ZF ElectronicsIn Stock: 958DB3C-B1LC Datasheet

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Key Parameters

Substitute Part Grouping Explanation

The DB3C-B1LC qualifies as a functional substitute for the DA3C-F1LB based on the following critical parameters:

Electrical Compatibility:

• Identical circuit configuration (SPDT)
• Identical switch function (On-Momentary)
• Identical current rating (100mA AC)
• Identical voltage rating (125V AC)
• Identical electrical life specification (100,000 cycles)

Mechanical Compatibility:

• Identical actuator type (Lever, Straight)
• Identical mounting type (Chassis Mount)
• Quick Connect termination (both use quick connect, though connector size differs)

Operational Differences: The DB3C-B1LC exhibits higher operating force (50gf vs. 27gf), greater operating position travel (0.437" vs. 0.350"), and extended temperature range (-40°C to 120°C vs. -40°C to 85°C). These differences represent design improvements rather than incompatibilities. The DB3C-B1LC is active product status with RoHS3 compliance, addressing the obsolescence and regulatory limitations of the DA3C-F1LB.

Parameter Comparison

Engineering Selection Recommendations

The DB3C-B1LC is the appropriate substitute for the obsolete DA3C-F1LB in new designs and procurement scenarios. Selection is based on the following factors:

Regulatory Compliance: The DB3C-B1LC is RoHS3 compliant, addressing the non-compliance status of the DA3C-F1LB. This is mandatory for applications subject to current environmental regulations.

Product Availability: The DB3C-B1LC maintains active product status with documented inventory, ensuring long-term supply chain reliability. The DA3C-F1LB obsolescence status creates procurement risk.

Electrical and Functional Equivalence: Both switches share identical electrical ratings (100mA, 125V AC), circuit configuration (SPDT), and switch function (On-Momentary), ensuring functional interchangeability in the electrical circuit.

Mechanical Integration Considerations: The DB3C-B1LC requires harness modification due to the larger quick connect termination size (0.110" vs. 0.093"). The increased operating force (50gf vs. 27gf) and operating position (0.437" vs. 0.350") must be evaluated against mechanical design constraints. The extended temperature range (-40°C to 120°C) provides operational margin beyond the DA3C-F1LB specification.

Frequently Asked Questions (FAQ)

Q: Can the DB3C-B1LC be used as a direct replacement for the DA3C-F1LB without modification?

A: Electrical substitution is direct. Mechanical integration requires harness modification due to the different quick connect termination size (0.110" vs. 0.093"). Mounting and actuator compatibility are identical.

Q: What is the impact of the higher operating force on the DB3C-B1LC?

A: The DB3C-B1LC requires 50gf actuation force compared to 27gf for the DA3C-F1LB. This affects user interface feel and may require mechanical lever design adjustment if the application is sensitive to actuation force.

Q: Are there any temperature-related limitations when substituting?

A: The DB3C-B1LC supports operation to 120°C, exceeding the DA3C-F1LB maximum of 85°C. This provides additional thermal margin and is not a limitation for applications within the original temperature range.

Q: What does RoHS3 compliance mean for this substitution?

A: RoHS3 compliance indicates the DB3C-B1LC meets current environmental regulations restricting hazardous substances. The DA3C-F1LB non-compliance status may restrict its use in regulated markets or applications with environmental requirements.

Q: Is the mechanical life specification relevant to this substitution?

A: The DB3C-B1LC specifies 15,000,000 mechanical cycles, while the DA3C-F1LB does not provide this specification. Both share identical electrical life (100,000 cycles), which is the primary switching endurance metric for this application class.

Q: How does the IP50 ingress protection on the DB3C-B1LC affect compatibility?

A: The DB3C-B1LC provides IP50 dust protection, an enhancement not specified for the DA3C-F1LB. This provides additional environmental sealing and is compatible with applications requiring dust protection or operating in contaminated environments.