LR1F301R Equivalent & Substitute Parts

Part Overview

The LR1F301R is a 301 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 and is designed for applications requiring precision resistance values with tight tolerance specifications. The part maintains Active product status and is ROHS3 compliant. Substitute parts are identified when equivalent electrical and mechanical parameters are required due to inventory constraints, supply chain considerations, or design flexibility needs.

Substiute Parts

LR1F301R

TE Connectivity Passive ProductIn Stock: 1006LR1F301R Datasheet

Current PartRFQ

MRS25000C3010FRP00

Vishay Beyschlag/Draloric/BC ComponentsIn Stock: 16432MRS25000C3010FRP00 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the LR1F301R is permissible with parts that maintain identical electrical characteristics and compatible mechanical form factors. The critical parameters governing substitution are:

• Resistance Value: 301 Ohms (exact match required)
• Tolerance: ±1% (exact match required)
• Power Rating: 0.6W (exact match required)
• Composition: Metal Film (exact match required)
• Temperature Coefficient: ±50ppm/°C (exact match required)
• Operating Temperature Range: -55°C ~ 155°C (exact match required)
• Package Configuration: Axial through-hole (exact match required)
• Compliance: ROHS3 Compliant (exact match required)

The MRS25000C3010FRP00 manufactured by Vishay Beyschlag/Draloric/BC Components satisfies all substitution criteria. Physical dimensions vary slightly (0.098" Dia x 0.256" L versus 0.091" Dia x 0.244" L), which remains within acceptable tolerances for axial component placement in standard through-hole applications.

Parameter Comparison

Engineering Selection Recommendations

Both the LR1F301R and MRS25000C3010FRP00 are Active product status components with full ROHS3 compliance and identical electrical specifications. Selection between these parts is determined by availability, packaging format, and supply chain requirements rather than electrical performance differences.

The LR1F301R is supplied in Tape & Box (TB) packaging format, while the MRS25000C3010FRP00 is supplied in Cut Tape (CT) format. Both formats are suitable for automated assembly processes. The MRS25000C3010FRP00 maintains significantly higher inventory availability (16,341 pieces versus 913 pieces), which may influence procurement decisions for high-volume applications.

Physical dimension variations between the two parts are minor and do not impact circuit board layout or component placement in standard through-hole PCB designs. Both parts operate identically across the full -55°C to 155°C temperature range with matching temperature coefficients.

Frequently Asked Questions (FAQ)

Q: Can the MRS25000C3010FRP00 be used as a direct replacement for the LR1F301R in existing designs?

A: Yes. The MRS25000C3010FRP00 is electrically and mechanically compatible with the LR1F301R. All critical parameters including resistance value, tolerance, power rating, temperature coefficient, and operating temperature range are identical. Physical dimensions differ slightly but remain within acceptable tolerances for through-hole PCB applications.

Q: What are the key differences between these two parts?

A: The primary differences are manufacturer (TE Connectivity versus Vishay), packaging format (Tape & Box versus Cut Tape), and physical dimensions. Electrical performance is identical. The MRS25000C3010FRP00 offers higher inventory availability.

Q: Are there any compliance or certification differences?

A: Both parts are ROHS3 compliant and share identical ECCN (EAR99) and HTSUS (8533.21.0090) classifications. No compliance differences exist between the two parts.

Q: Does the slight difference in physical dimensions affect PCB layout?

A: No. The dimensional variations (0.007" diameter difference and 0.012" length difference) are negligible for standard through-hole component placement. Both parts fit within standard axial resistor footprints used in PCB design.

Q: Which part should be selected for new designs?

A: Selection is based on supply chain availability and packaging requirements. Both parts deliver identical electrical performance. The MRS25000C3010FRP00 offers higher inventory levels, which may provide supply chain advantages for production quantities.

Q: Are temperature performance characteristics identical?

A: Yes. Both parts operate across -55°C to 155°C with identical ±50ppm/°C temperature coefficients, ensuring matching thermal performance in all operating conditions.