LR1F56K2 Equivalent & Substitute Parts

Part Overview

The LR1F56K2 is a 56.2 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 for direct replacement in circuit applications.

Key Parameters

Parameter	Value
Resistance	56.2 kOhms
Tolerance	±1%
Power Rating	0.6W
Composition	Metal Film
Temperature Coefficient	±50ppm/°C
Operating Temperature Range	-55°C ~ 155°C
Package Type	Axial
Terminations	2
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitute parts for the LR1F56K2 are qualified based on the following electrical and mechanical parameters:

Electrical Equivalence Criteria:

Resistance value: 56.2 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 MRS25000C5622FCT00 and MRS25000C5622FRP00 from Vishay Beyschlag/Draloric/BC Components meet all specified electrical parameters and mechanical requirements. Both components are manufactured in the MRS25 series and maintain identical resistance, tolerance, power rating, temperature coefficient, and operating temperature specifications. Physical dimensions vary slightly (0.098" Dia x 0.256" L versus 0.091" Dia x 0.244" L), which remains within acceptable axial resistor form factor tolerances for standard through-hole PCB applications.

Parameter Comparison

Parameter	LR1F56K2 (TE Connectivity)	MRS25000C5622FCT00 (Vishay)	MRS25000C5622FRP00 (Vishay)
Resistance	56.2 kOhms	56.2 kOhms	56.2 kOhms
Tolerance	±1%	±1%	±1%
Power Rating	0.6W	0.6W	0.6W
Composition	Metal Film	Metal Film	Metal Film
Temperature Coefficient	±50ppm/°C	±50ppm/°C	±50ppm/°C
Operating Temperature	-55°C ~ 155°C	-55°C ~ 155°C	-55°C ~ 155°C
Package Type	Axial	Axial	Axial
Terminations	2	2	2
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Product Status	Active	Active	Active

Engineering Selection Recommendations

Both MRS25000C5622FCT00 and MRS25000C5622FRP00 are direct electrical and mechanical equivalents to the LR1F56K2. Selection between these substitute parts and the original component is based on availability, packaging format, and supply chain requirements.

Packaging Considerations:

LR1F56K2: Supplied in Tape & Box (TB) format
MRS25000C5622FCT00: Supplied in Cut Tape (CT) format
MRS25000C5622FRP00: Supplied in Cut Tape (CT) format

All three components maintain Active product status and ROHS3 compliance. The Vishay substitute parts carry REACH Unaffected status, while the TE Connectivity original part lists REACH status as Vendor Undefined. Both substitute parts demonstrate higher inventory availability (10,973 and 5,752 units respectively) compared to the original LR1F56K2 (833 units).

Frequently Asked Questions (FAQ)

Q: Can MRS25000C5622FCT00 or MRS25000C5622FRP00 be used as direct replacements for LR1F56K2?

A: Yes. Both Vishay parts are direct substitutes. They share identical electrical specifications (56.2 kOhms, ±1%, 0.6W, ±50ppm/°C, -55°C to 155°C operating range) and mechanical configuration (axial, 2 terminations, metal film composition).

Q: What is the difference between MRS25000C5622FCT00 and MRS25000C5622FRP00?

A: Both parts are electrically and mechanically identical. The difference lies in packaging format designation within the Vishay MRS25 series. Both are supplied in Cut Tape format and meet all equivalent specifications.

Q: Are there physical dimension differences between the original and substitute parts?

A: Minor dimensional variations exist. The LR1F56K2 measures 0.091" Dia x 0.244" L (2.30mm x 6.20mm), while both Vishay substitutes measure 0.098" Dia x 0.256" L (2.50mm x 6.50mm). These variations remain within standard axial resistor form factor tolerances and do not affect through-hole PCB mounting compatibility.

Q: Do all three parts meet RoHS compliance requirements?

A: Yes. The LR1F56K2, MRS25000C5622FCT00, and MRS25000C5622FRP00 are all ROHS3 compliant.

Q: What is the temperature coefficient specification, and is it identical across all three parts?

A: The temperature coefficient is ±50ppm/°C for all three components. This specification is identical and ensures consistent performance across the -55°C to 155°C operating temperature range.

Q: Which part should be selected based on availability?

A: Selection should be based on current inventory requirements and supply chain logistics. The Vishay MRS25 series parts (MRS25000C5622FCT00 and MRS25000C5622FRP00) demonstrate significantly higher stock levels, which may provide supply chain advantages for high-volume applications.

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