LR1F274R Equivalent & Substitute Parts

Part Overview

The LR1F274R is a 274 Ohms ±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 ROHS3 compliant and maintains active product status. Substitute parts are identified when equivalent electrical specifications and mechanical compatibility requirements are met for applications requiring alternative sourcing or inventory management.

Substiute Parts

LR1F274R

TE Connectivity Passive ProductIn Stock: 790LR1F274R Datasheet

Current PartRFQ

MRS25000C2740FCT00

Vishay Beyschlag/Draloric/BC ComponentsIn Stock: 12633MRS25000C2740FCT00 Datasheet

DirectRFQ

MRS25000C2740FRP00

Vishay Beyschlag/Draloric/BC ComponentsIn Stock: 15440MRS25000C2740FRP00 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the LR1F274R are qualified based on the following electrical and mechanical parameters:

Electrical Equivalence Criteria:

• Resistance value: 274 Ohms
• Tolerance: ±1%
• Power rating: 0.6W
• Composition: Metal Film
• Temperature coefficient: ±50ppm/°C
• Operating temperature range: -55°C to 155°C

Mechanical Compatibility Criteria:

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

Compliance Criteria:

• RoHS3 compliance
• REACH unaffected status
• ECCN: EAR99

The substitute parts MRS25000C2740FCT00 and MRS25000C2740FRP00 from Vishay Beyschlag/Draloric/BC Components meet all electrical specifications and mechanical requirements. Both parts are manufactured in the MRS25 series and maintain identical electrical performance characteristics. The primary difference between the main part and substitutes is the packaging format (Tape & Box versus Cut Tape) and minor dimensional variations within acceptable tolerances for axial resistor applications.

Parameter Comparison

Engineering Selection Recommendations

All three parts—LR1F274R, MRS25000C2740FCT00, and MRS25000C2740FRP00—are active products with identical electrical specifications and full regulatory compliance. Selection between these parts is determined by packaging requirements and supply chain considerations rather than electrical performance.

LR1F274R (TE Connectivity): Supplied in Tape & Box packaging format. Suitable for applications requiring boxed component delivery and mixed-volume orders.

MRS25000C2740FCT00 (Vishay): Supplied in Cut Tape packaging. Appropriate for high-volume production environments utilizing automated tape-fed assembly equipment.

MRS25000C2740FRP00 (Vishay): Supplied in Cut Tape packaging. Functionally equivalent to MRS25000C2740FCT00 with identical electrical and mechanical specifications.

All parts maintain ROHS3 compliance and REACH unaffected status, confirming suitability for regulated applications. The dimensional variation between the main part (0.091" Dia x 0.244" L) and substitute parts (0.098" Dia x 0.256" L) remains within standard tolerances for axial resistor through-hole mounting.

Frequently Asked Questions (FAQ)

Q: Can MRS25000C2740FCT00 or MRS25000C2740FRP00 be used as direct replacements for LR1F274R in existing designs?

A: Yes. Both Vishay parts are electrically and mechanically equivalent to the TE Connectivity LR1F274R. All three components share identical resistance, tolerance, power rating, temperature coefficient, and operating temperature specifications. The axial package configuration and two-terminal design ensure compatibility with existing through-hole PCB layouts.

Q: What is the difference between MRS25000C2740FCT00 and MRS25000C2740FRP00?

A: Both parts are functionally identical with matching electrical specifications and physical dimensions. The difference lies in packaging format designation within the Vishay product line. Both are supplied in Cut Tape format and are suitable for automated assembly processes.

Q: Are there dimensional differences between LR1F274R and the Vishay substitutes?

A: Minor dimensional variations exist. The LR1F274R measures 0.091" Dia x 0.244" L (2.30mm x 6.20mm), while both Vishay parts measure 0.098" Dia x 0.256" L (2.50mm x 6.50mm). These variations are within standard tolerances for axial resistor components and do not affect electrical performance or through-hole mounting compatibility.

Q: Do all three parts meet the same regulatory requirements?

A: Yes. LR1F274R, MRS25000C2740FCT00, and MRS25000C2740FRP00 are all ROHS3 compliant, REACH unaffected, and classified under ECCN EAR99. All parts are suitable for applications requiring regulatory compliance in these areas.

Q: Which part should be selected for high-volume production?

A: MRS25000C2740FCT00 or MRS25000C2740FRP00 are optimized for high-volume production due to Cut Tape packaging compatibility with automated tape-fed assembly equipment. LR1F274R in Tape & Box format is suitable for lower-volume or mixed-component orders.

Q: Are there any temperature or performance differences between these parts?

A: No. All three parts operate across the identical temperature range of -55°C to 155°C with a temperature coefficient of ±50ppm/°C. Electrical performance and reliability characteristics are equivalent across all three options.