BZ-2RQ104 Equivalent & Substitute Parts Reference

Part Overview

The BZ-2RQ104 is a snap action SPDT switch manufactured by Honeywell Sensing and Productivity Solutions, designed for panel mount applications with a 15A AC / 500mA DC current rating at 125V. This component features an overtravel plunger actuator with steel construction and solder lug termination.

The BZ-2RQ104 is classified as obsolete. Identifying equivalent substitute parts is necessary to maintain design continuity, ensure supply chain availability, and support ongoing production or maintenance requirements for systems utilizing this switch configuration.

Substiute Parts

BZ-2RQ104

Honeywell Sensing and Productivity SolutionsIn Stock: 943BZ-2RQ104 Datasheet

Current PartRFQ

BZ-2RQ1

Honeywell Sensing and Productivity SolutionsIn Stock: 1438BZ-2RQ1 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the BZ-2RQ104 is determined by strict equivalence across the following critical parameters:

Electrical Compatibility Requirements:

• Circuit configuration: SPDT
• Switch function: On-Mom
• Current rating: 15A (AC) and 500mA (DC)
• Voltage rating: 125V (AC and DC)

Mechanical Compatibility Requirements:

• Actuator type: Overtravel Plunger
• Mounting type: Panel Mount
• Termination style: Solder Lug
• Operating temperature range: -55°C to 85°C
• Mechanical life: 20,000,000 Cycles

Regulatory & Environmental Requirements:

• RoHS Compliance
• Moisture Sensitivity Level: 1 (Unlimited)

The BZ-2RQ1 meets all specified electrical, mechanical, and regulatory parameters and qualifies as a direct substitute for the obsolete BZ-2RQ104.

Parameter Comparison

Engineering Selection Recommendations

The BZ-2RQ1 is the qualified substitute for the obsolete BZ-2RQ104 based on the following engineering criteria:

Electrical Equivalence: Both parts maintain identical current and voltage ratings (15A AC / 500mA DC at 125V), ensuring direct functional replacement in SPDT On-Mom switch applications.

Mechanical Equivalence: Actuator type, mounting configuration, termination style, and all dimensional parameters are identical, confirming mechanical interchangeability in panel mount installations.

Regulatory Compliance: Both parts are RoHS Compliant with MSL 1 (Unlimited) rating, meeting environmental and moisture sensitivity requirements.

Product Status Advantage: The BZ-2RQ1 is classified as Active, providing assured long-term availability and supply chain continuity compared to the obsolete BZ-2RQ104.

Parameter Variance: The BZ-2RQ1 exhibits a lower release force (113gf versus 170gf). This difference does not affect substitution eligibility within the BZ series design parameters but should be noted for applications with specific actuation force requirements.

Frequently Asked Questions (FAQ)

Q: Can the BZ-2RQ1 directly replace the BZ-2RQ104 in existing designs?

A: Yes. The BZ-2RQ1 is electrically and mechanically equivalent to the BZ-2RQ104 across all critical parameters: SPDT circuit, 15A AC / 500mA DC rating, 125V voltage, overtravel plunger actuator, panel mount configuration, and solder lug termination. Both parts operate across -55°C to 85°C and support 20,000,000 mechanical cycles.

Q: What is the significance of the release force difference between these parts?

A: The BZ-2RQ1 has a release force of 113gf compared to 170gf for the BZ-2RQ104. This parameter defines the force required to deactivate the switch after actuation. The difference is within the BZ series design envelope and does not prevent substitution. Applications requiring specific release force characteristics should evaluate this parameter against system requirements.

Q: Does packaging affect substitution compatibility?

A: Packaging format (bulk for BZ-2RQ1 versus unspecified for BZ-2RQ104) does not affect electrical or mechanical compatibility. Packaging selection is determined by procurement and inventory management requirements, not functional performance.

Q: Why is the BZ-2RQ1 preferred over the obsolete BZ-2RQ104?

A: The BZ-2RQ1 is classified as Active, ensuring ongoing manufacturer support, availability, and supply chain reliability. The BZ-2RQ104 is obsolete, presenting supply risk and potential discontinuation of technical support.

Q: Are both parts RoHS compliant?

A: Yes. Both the BZ-2RQ104 and BZ-2RQ1 are RoHS Compliant with Moisture Sensitivity Level 1 (Unlimited), meeting environmental and regulatory requirements.

Q: What is the base product number for these switches?

A: Both parts are derived from the BZ-2 base product number within the Honeywell Sensing and Productivity Solutions BZ snap action switch series.