LR1F3K92 Equivalent & Substitute Parts

Part Overview

The LR1F3K92 is a 3.92 kOhms ±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 1118 units available in inventory. Substitute parts are identified when the main part becomes unavailable, when procurement lead times are extended, or when alternative sourcing is required to meet supply chain objectives while maintaining equivalent electrical and mechanical performance.

Substiute Parts

LR1F3K92

TE Connectivity Passive ProductIn Stock: 1216LR1F3K92 Datasheet

Current PartRFQ

MRS25000C3921FRP00

Vishay Beyschlag/Draloric/BC ComponentsIn Stock: 2554MRS25000C3921FRP00 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the LR1F3K92 are qualified based on the following electrical and mechanical parameters:

Electrical Equivalence Criteria:

• Resistance value: 3.92 kOhms (exact match required)
• Tolerance: ±1% (substitute must achieve this specification)
• Power rating: 0.6W (substitute must equal or exceed)
• Composition: Metal Film (maintains performance characteristics)
• Temperature coefficient: ±50ppm/°C (ensures thermal stability)
• Operating temperature range: -55°C ~ 155°C (supports full application envelope)

Mechanical Compatibility Criteria:

• Package type: Axial (through-hole configuration)
• Number of terminations: 2 (standard lead configuration)
• Physical dimensions: Axial form factor (minor dimensional variations acceptable within industry standards)

Compliance Criteria:

• RoHS3 compliance (regulatory requirement)
• ECCN classification: EAR99 (export control consistency)
• HTSUS code: 8533.21.0090 (tariff classification alignment)

The MRS25000C3921FRP00 manufactured by Vishay Beyschlag/Draloric/BC Components meets all electrical and mechanical substitution criteria for the LR1F3K92.

Parameter Comparison

Engineering Selection Recommendations

Primary Part Selection: The LR1F3K92 from TE Connectivity Passive Product is the specified component and should be used when available. This part is in active production status with established supply availability (1118 units in stock) and carries full ROHS3 compliance and EAR99 export classification.

Substitute Part Selection: The MRS25000C3921FRP00 from Vishay Beyschlag/BC Components is a direct electrical and mechanical equivalent. This substitute part meets all critical electrical parameters including resistance value, tolerance, power rating, temperature coefficient, and operating temperature range. Both parts are ROHS3 compliant and carry identical ECCN and HTSUS classifications, ensuring regulatory and trade compliance consistency.

Packaging Consideration: The substitute part is supplied in Cut Tape (CT) format, whereas the primary part is supplied in Tape & Box (TB) format. This difference affects procurement and handling procedures but does not impact electrical or mechanical performance in the final assembly.

Dimensional Compatibility: Minor dimensional variations exist between the two parts (diameter and length differences of approximately 0.007" and 0.012" respectively). These variations remain within acceptable tolerances for standard through-hole PCB assembly processes and do not affect circuit performance or board layout compatibility.

Frequently Asked Questions (FAQ)

Q: Can the MRS25000C3921FRP00 be used as a direct replacement for the LR1F3K92 in existing designs?

A: Yes. Both parts are electrically and mechanically equivalent. They share identical resistance values (3.92 kOhms), tolerance (±1%), power rating (0.6W), temperature coefficient (±50ppm/°C), operating temperature range (-55°C ~ 155°C), and axial package configuration. Both are ROHS3 compliant with matching export classifications.

Q: Are there dimensional differences between these parts?

A: Yes. The MRS25000C3921FRP00 has slightly larger dimensions (0.098" diameter x 0.256" length) compared to the LR1F3K92 (0.091" diameter x 0.244" length). These differences are minor and do not affect PCB layout or assembly compatibility for standard through-hole applications.

Q: What is the difference between Tape & Box and Cut Tape packaging?

A: Tape & Box (TB) packaging includes a full reel of components in tape format with a protective box. Cut Tape (CT) packaging provides components in tape format without the box. Both formats contain the same components; the difference is in handling and storage logistics. Cut Tape format typically offers cost advantages for smaller quantity orders.

Q: Do both parts meet the same regulatory requirements?

A: Yes. Both the LR1F3K92 and MRS25000C3921FRP00 are ROHS3 compliant, carry EAR99 export classification, and share the same HTSUS tariff code (8533.21.0090). They meet identical regulatory and trade compliance standards.

Q: What is the temperature coefficient specification and why does it matter?

A: Both parts have a temperature coefficient of ±50ppm/°C, meaning the resistance value changes by a maximum of 50 parts per million for each degree Celsius change in operating temperature. This specification ensures stable circuit performance across the full operating temperature range of -55°C to 155°C.

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

A: Yes. Both parts meet ±1% tolerance specifications, which qualifies them for precision applications. The identical temperature coefficient (±50ppm/°C) and operating temperature range ensure consistent performance across environmental conditions.

Q: What inventory levels are available for each part?

A: The LR1F3K92 has 1118 units in stock. The MRS25000C3921FRP00 has 2526 units in stock. Both parts are in active production status with established supply availability.