LR1F820K Equivalent & Substitute Parts

Part Overview

The LR1F820K is an active, through-hole axial metal film resistor manufactured by TE Connectivity Passive Product. This component is rated for 820 kOhms ±1% tolerance with 0.6W power dissipation capability. The resistor operates across a temperature range of -55°C to 155°C and is specified with a temperature coefficient of ±50ppm/°C. This part is ROHS3 compliant and REACH unaffected, making it suitable for modern electronic applications requiring environmental compliance. Equivalent and substitute parts are identified to provide procurement flexibility, inventory alternatives, and supply chain continuity when the primary part number becomes unavailable or when design requirements permit functional interchangeability.

Substiute Parts

LR1F820K

TE Connectivity Passive ProductIn Stock: 792LR1F820K Datasheet

Current PartRFQ

MRS25000C8203FCT00

Vishay Beyschlag/Draloric/BC ComponentsIn Stock: 11467MRS25000C8203FCT00 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the LR1F820K is determined by strict equivalence across all critical electrical and mechanical parameters. The substitute part must satisfy the following criteria:

Electrical Parameters (Must Match Exactly):

• Resistance value: 820 kOhms
• Tolerance: ±1%
• Power rating: 0.6W
• Composition: Metal Film
• Temperature coefficient: ±50ppm/°C
• Operating temperature range: -55°C to 155°C

Mechanical Parameters (Must Match Exactly):

• Package type: Axial
• Number of terminations: 2

Compliance Parameters (Must Match or Exceed):

• RoHS Status: ROHS3 Compliant
• REACH Status: REACH Unaffected

The MRS25000C8203FCT00 manufactured by Vishay Beyschlag/Draloric/BC Components meets all substitution criteria. Physical dimensions vary slightly (0.098" Dia x 0.256" L versus 0.091" Dia x 0.244" L), which is acceptable within standard axial resistor manufacturing tolerances and does not affect electrical performance or circuit board layout compatibility for standard through-hole applications.

Parameter Comparison

Engineering Selection Recommendations

Both the LR1F820K and MRS25000C8203FCT00 are active products with identical electrical specifications and full compliance with ROHS3 and REACH requirements. Selection between these parts is based on the following factors:

Availability and Inventory: The MRS25000C8203FCT00 has significantly higher inventory availability (11,457 pieces) compared to the LR1F820K (688 pieces), making it the preferred choice for high-volume procurement or when supply continuity is critical.

Packaging Format: The LR1F820K is supplied in Tape & Box (TB) packaging, while the MRS25000C8203FCT00 is supplied in Cut Tape (CT) packaging. Selection depends on assembly process requirements and handling procedures.

Physical Dimensions: Minor dimensional variations exist within standard manufacturing tolerances. The MRS25000C8203FCT00 is slightly larger in both diameter and length. For applications with space constraints, verify that the substitute part fits within the allocated board space.

Manufacturer Preference: If design documentation specifies a particular manufacturer, that specification must be honored unless formally revised through engineering change control procedures.

Frequently Asked Questions (FAQ)

Q: Can the MRS25000C8203FCT00 be used as a direct replacement for the LR1F820K in all applications?

A: Yes. Both parts are electrically identical with matching resistance, tolerance, power rating, temperature coefficient, and operating temperature range. Both are ROHS3 compliant and REACH unaffected. Physical dimensions are within standard axial resistor manufacturing tolerances and do not affect circuit functionality or standard through-hole board layouts.

Q: What is the difference between Tape & Box (TB) and Cut Tape (CT) packaging?

A: Tape & Box packaging supplies components on tape wound on a reel and placed in a protective box, suitable for automated pick-and-place assembly. Cut Tape packaging supplies components on tape that has been cut into smaller sections, typically used for manual assembly or lower-volume applications. Selection depends on assembly process capabilities and volume requirements.

Q: Are there any thermal performance differences between these parts?

A: No. Both parts have identical temperature coefficients (±50ppm/°C) and identical operating temperature ranges (-55°C to 155°C). Thermal performance is equivalent.

Q: Do the dimensional differences affect circuit board layout?

A: For standard through-hole applications, the dimensional differences (0.007" diameter and 0.012" length variations) are within acceptable tolerances and do not affect typical PCB hole spacing or component placement. For applications with tight spatial constraints, verify that the substitute part fits within the allocated space.

Q: Which part should be selected for new designs?

A: Either part is acceptable for new designs. Selection should be based on availability, packaging requirements, and supply chain strategy. The MRS25000C8203FCT00 offers higher inventory availability and may provide better supply chain continuity.

Q: Are both parts suitable for high-reliability applications?

A: Both parts are active products with full environmental compliance (ROHS3 and REACH). Suitability for high-reliability applications depends on specific application requirements, qualification procedures, and design documentation specifications. Consult application-specific reliability requirements and qualification standards.