LR1F2K21 Equivalent & Substitute Parts

Part Overview

The LR1F2K21 is a 2.21 kOhms ±1% 0.6W through-hole resistor manufactured by TE Connectivity Passive Product in the Neohm series. This axial metal film resistor operates across a temperature range of -55°C to 155°C with a temperature coefficient of ±50ppm/°C. The component is classified as Active product status and is RoHS3 compliant. Substitute parts are identified when equivalent electrical specifications and mechanical compatibility requirements are met across alternative manufacturers.

Substiute Parts

LR1F2K21

TE Connectivity Passive ProductIn Stock: 1103LR1F2K21 Datasheet

Current PartRFQ

MRS25000C2211FCT00

Vishay Beyschlag/Draloric/BC ComponentsIn Stock: 65244MRS25000C2211FCT00 Datasheet

DirectRFQ

MRS25000C2211FRP00

Vishay Beyschlag/Draloric/BC ComponentsIn Stock: 12275MRS25000C2211FRP00 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the LR1F2K21 are qualified based on the following electrical and mechanical parameters:

Electrical Equivalence Criteria:

• Resistance value: 2.21 kOhms
• Tolerance: ±1%
• Power rating: 0.6W
• Composition: Metal Film
• Temperature coefficient: ±50ppm/°C
• Operating temperature range: -55°C ~ 155°C

Mechanical Compatibility Criteria:

• Package type: Axial
• Number of terminations: 2
• Through-hole configuration

The substitute parts MRS25000C2211FCT00 and MRS25000C2211FRP00 from Vishay Beyschlag/Draloric/BC Components meet all electrical specifications and mechanical requirements. Both components are manufactured in the MRS25 series and maintain identical electrical performance characteristics. The primary distinction between these substitutes is packaging format: MRS25000C2211FCT00 is supplied in Cut Tape (CT) format, while MRS25000C2211FRP00 is also supplied in Cut Tape (CT) format.

Parameter Comparison

Engineering Selection Recommendations

All three components—LR1F2K21, MRS25000C2211FCT00, and MRS25000C2211FRP00—are Active product status with ROHS3 compliance and identical electrical specifications. Selection between these parts is determined by availability, packaging format requirements, and physical space constraints within the application.

The LR1F2K21 features a smaller physical dimension (0.091" Dia x 0.244" L) compared to the Vishay substitutes (0.098" Dia x 0.256" L). Applications with space-critical layouts may require the TE Connectivity component. Conversely, when the LR1F2K21 is unavailable, the Vishay MRS25 series components provide direct electrical equivalence with minimal dimensional variance.

Both Vishay substitutes maintain identical electrical performance and compliance certifications. The choice between MRS25000C2211FCT00 and MRS25000C2211FRP00 is based on packaging format preference and supply chain availability.

Frequently Asked Questions (FAQ)

Q: Can MRS25000C2211FCT00 or MRS25000C2211FRP00 be used as direct replacements for LR1F2K21?

A: Yes. Both Vishay components provide electrical equivalence across all specified parameters: 2.21 kOhms ±1% resistance, 0.6W power rating, ±50ppm/°C temperature coefficient, and -55°C to 155°C operating range. Both are metal film axial resistors with two terminations and ROHS3 compliance.

Q: What is the physical dimension difference between LR1F2K21 and the Vishay substitutes?

A: The LR1F2K21 measures 0.091" Dia x 0.244" L (2.30mm x 6.20mm), while MRS25000C2211FCT00 and MRS25000C2211FRP00 measure 0.098" Dia x 0.256" L (2.50mm x 6.50mm). The Vishay components are slightly larger in both diameter and length.

Q: Are there packaging differences between MRS25000C2211FCT00 and MRS25000C2211FRP00?

A: Both components are supplied in Cut Tape (CT) packaging format. The primary distinction is inventory availability and supply chain sourcing.

Q: Do all three components meet the same compliance standards?

A: Yes. LR1F2K21, MRS25000C2211FCT00, and MRS25000C2211FRP00 are all ROHS3 compliant with EAR99 ECCN classification and identical HTSUS codes (8533.21.0090).

Q: What determines substitution eligibility for this resistor category?

A: Substitution eligibility is determined by matching resistance value, tolerance, power rating, composition, temperature coefficient, operating temperature range, package type, and termination count. All three components meet these criteria.