R1973ABLKREDFF2 Equivalent & Substitute Parts

Part Overview

The R1973ABLKREDFF2 is an illuminated rocker switch manufactured by E-Switch, designed for panel-mount, snap-in applications. This SPST (Single Pole Single Throw) switch operates at 9A AC, 125V with a red neon illumination at 250VAC. The switch features a concave red actuator with O/- marking and quick-connect 0.187" termination. With an active product status and ROHS3 compliance, this component is suitable for general-purpose on-off control applications requiring illuminated feedback. Equivalent parts are identified to support procurement flexibility, inventory management, and supply chain continuity.

Substiute Parts

R1973ABLKREDFF2

E-SwitchIn Stock: 1105R1973ABLKREDFF2 Datasheet

Current PartRFQ

LRA22H2FBRLN

ZF ElectronicsIn Stock: 4913LRA22H2FBRLN Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the R1973ABLKREDFF2 is determined by strict alignment of the following critical parameters:

• Circuit configuration (SPST)
• Voltage rating (125V AC)
• Mounting type (Panel Mount, Snap-In)
• Actuator type (Concave, Illuminated)
• Actuator color (Red)
• Illumination type (Neon, Red)
• Termination style (Quick Connect - 0.187")
• Panel cutout dimensions (within tolerance of 19.20mm x 12.80mm)

Current rating tolerance is permitted within the operational envelope of the application. The substitute part LRA22H2FBRLN meets all critical substitution criteria with a current rating of 10A AC, which exceeds the original 9A specification and remains compatible with the 125V AC voltage class and panel-mount configuration.

Parameter Comparison

Engineering Selection Recommendations

Both the R1973ABLKREDFF2 and LRA22H2FBRLN are active products with ROHS3 compliance. The LRA22H2FBRLN carries additional regulatory approvals (CE, cULus, VDE), which may be advantageous for applications requiring multi-regional certification. The substitute part offers a higher current rating (10A vs. 9A) and superior mechanical life (100,000 vs. 30,000 cycles), making it suitable for applications with extended operational demands. Panel cutout dimensions are nominally equivalent (19.20mm x 12.80mm vs. 19.10mm x 12.90mm), permitting direct mechanical interchange. The illumination voltage difference (250VAC vs. 125VAC) must be evaluated against the specific circuit design to ensure proper neon lamp operation.

Frequently Asked Questions (FAQ)

Q: Can the LRA22H2FBRLN directly replace the R1973ABLKREDFF2 in existing designs?

A: Yes, provided the illumination voltage supply is compatible. The LRA22H2FBRLN requires 125VAC nominal illumination voltage, whereas the R1973ABLKREDFF2 is rated for 250VAC. Panel cutout dimensions are within acceptable tolerance for direct mechanical substitution.

Q: What is the significance of the current rating difference (9A vs. 10A)?

A: The LRA22H2FBRLN's 10A rating exceeds the original 9A specification. This higher rating does not create incompatibility; it indicates the substitute part can handle equal or greater load current within the 125V AC voltage class.

Q: Are there temperature range considerations for substitution?

A: The R1973ABLKREDFF2 operates from -30°C to 65°C, while the LRA22H2FBRLN operates from -20°C to 65°C. Applications requiring operation below -20°C must retain the original part.

Q: How do the mechanical and electrical life ratings affect substitution decisions?

A: The LRA22H2FBRLN provides extended mechanical life (100,000 vs. 30,000 cycles), beneficial for high-cycle applications. The electrical life difference (6,000 vs. 10,000 cycles) is application-dependent and should be evaluated against actual switching frequency requirements.

Q: What packaging and inventory considerations apply?

A: Both parts are supplied in bulk packaging. The LRA22H2FBRLN has higher inventory availability (4,846 pcs vs. 1,075 pcs), supporting procurement lead time optimization.