LR1F499R Equivalent & Substitute Parts

Part Overview

The LR1F499R is a 499 Ohms ±1% 0.6W through-hole resistor manufactured by TE Connectivity Passive Product in the Neohm series. This axial metal film resistor is designed for general-purpose electronic applications requiring precision resistance values with tight tolerance specifications. The part is currently in active production status with 765 pieces available in inventory. Substitute parts are identified when original stock becomes unavailable, when procurement lead times exceed project requirements, or when alternative suppliers offer equivalent electrical and mechanical performance within the same parameter specifications.

Substiute Parts

LR1F499R

TE Connectivity Passive ProductIn Stock: 840LR1F499R Datasheet

Current PartRFQ

MRS25000C4990FRP00

Vishay Beyschlag/Draloric/BC ComponentsIn Stock: 17190MRS25000C4990FRP00 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the LR1F499R is determined by strict equivalence across the following critical parameters:

Electrical Parameters (Must Match Exactly):

• Resistance value: 499 Ohms
• Tolerance: ±1%
• Power rating: 0.6W
• Temperature coefficient: ±50ppm/°C
• Operating temperature range: -55°C ~ 155°C

Mechanical Parameters (Must Match Exactly):

• Package type: Axial
• Composition: Metal Film
• Number of terminations: 2

Compliance Parameters (Must Match or Exceed):

• RoHS3 Compliant status
• ECCN classification: EAR99
• HTSUS code: 8533.21.0090

The MRS25000C4990FRP00 manufactured by Vishay Beyschlag/Draloric/BC Components meets all electrical and mechanical equivalence criteria and maintains full compliance with applicable regulatory standards. Physical dimensions vary slightly within acceptable tolerances for axial through-hole resistor applications.

Parameter Comparison

Engineering Selection Recommendations

Both the LR1F499R and MRS25000C4990FRP00 are active production components with full ROHS3 compliance and EAR99 export classification. Selection between these parts is based on availability, packaging requirements, and supply chain considerations rather than electrical or mechanical performance differences.

The LR1F499R from TE Connectivity is supplied in Tape & Box packaging format with current inventory of 765 pieces. The MRS25000C4990FRP00 from Vishay Beyschlag/Draloric/BC Components is supplied in Cut Tape format with higher inventory availability of 17,108 pieces. Both parts are suitable for direct substitution in through-hole PCB applications where axial metal film resistors with 499 Ohm resistance and ±1% tolerance are specified.

Physical dimensions differ slightly between the two parts. The TE Connectivity LR1F499R measures 0.091" diameter by 0.244" length, while the Vishay MRS25000C4990FRP00 measures 0.098" diameter by 0.256" length. These dimensional variations remain within acceptable tolerances for standard axial resistor footprints and do not affect electrical performance or circuit functionality.

Frequently Asked Questions (FAQ)

Q: Can the MRS25000C4990FRP00 be used as a direct replacement for the LR1F499R in production assemblies?

A: Yes. Both parts are electrically and mechanically equivalent with identical resistance values, tolerances, power ratings, temperature coefficients, and operating temperature ranges. Both are ROHS3 compliant and carry the same ECCN and HTSUS classifications. The parts are suitable for direct substitution in through-hole PCB designs.

Q: What is the difference in physical size between these two parts?

A: The LR1F499R measures 0.091" diameter by 0.244" length (2.30mm x 6.20mm). The MRS25000C4990FRP00 measures 0.098" diameter by 0.256" length (2.50mm x 6.50mm). These dimensional differences are within standard tolerances for axial resistor packages and do not affect PCB footprint compatibility for typical through-hole applications.

Q: Are there packaging format differences between these parts?

A: Yes. The LR1F499R is supplied in Tape & Box (TB) format, while the MRS25000C4990FRP00 is supplied in Cut Tape (CT) format. Packaging format selection depends on assembly process requirements and handling procedures. Both formats are compatible with standard pick-and-place and manual assembly operations.

Q: Do both parts meet the same regulatory compliance standards?

A: Yes. Both the LR1F499R and MRS25000C4990FRP00 are ROHS3 compliant. The MRS25000C4990FRP00 carries REACH Unaffected status, while the LR1F499R lists REACH status as Vendor Undefined. Both parts carry identical ECCN (EAR99) and HTSUS (8533.21.0090) classifications.

Q: What is the temperature coefficient specification for these resistors?

A: Both parts have a temperature coefficient of ±50ppm/°C, indicating stable resistance performance across the operating temperature range of -55°C to 155°C. This specification is identical for both the LR1F499R and MRS25000C4990FRP00.

Q: Can these parts be used interchangeably in high-precision analog circuits?

A: Yes. Both parts feature ±1% tolerance and metal film composition, making them suitable for precision analog applications. The identical temperature coefficient of ±50ppm/°C ensures consistent performance across temperature variations in both parts.