LR1F383R Equivalent & Substitute Parts

Part Overview

The LR1F383R is a 383 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 applications requiring precision resistance values with tight tolerance specifications. The part is currently in active production status with 928 pieces available in stock. Equivalent and substitute parts are identified to provide alternative sourcing options when the primary part is unavailable or when procurement requirements necessitate alternative manufacturers or packaging configurations.

Substiute Parts

LR1F383R

TE Connectivity Passive ProductIn Stock: 974LR1F383R Datasheet

Current PartRFQ

MRS25000C3830FCT00

Vishay Beyschlag/Draloric/BC ComponentsIn Stock: 5239MRS25000C3830FCT00 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the LR1F383R is determined by strict equivalence across the following critical parameters:

Electrical Parameters (Non-Negotiable):

• Resistance value: 383 Ohms
• Tolerance: ±1%
• Power rating: 0.6W
• Temperature coefficient: ±50ppm/°C
• Operating temperature range: -55°C to 155°C

Physical Parameters (Non-Negotiable):

• Package type: Axial through-hole configuration
• Number of terminations: 2
• Composition: Metal Film

Compliance Parameters:

• RoHS3 compliance required
• ECCN classification: EAR99

The substitute part MRS25000C3830FCT00 manufactured by Vishay Beyschlag/Draloric/BC Components meets all electrical and physical requirements for direct substitution. Dimensional variations between the main part and substitute (0.091" Dia x 0.244" L versus 0.098" Dia x 0.256" L) remain within acceptable tolerances for axial through-hole component placement in standard PCB layouts.

Parameter Comparison

Engineering Selection Recommendations

The MRS25000C3830FCT00 is a direct electrical and functional equivalent to the LR1F383R. Both parts are active production components with ROHS3 compliance and EAR99 classification, meeting identical regulatory and environmental requirements.

Selection between these parts is determined by:

1. Availability and Lead Time: The MRS25000C3830FCT00 has higher inventory availability (5141 pieces) compared to the LR1F383R (928 pieces), making it suitable for high-volume procurement scenarios.

2. Packaging Requirements: The LR1F383R is supplied in Tape & Box format, while the MRS25000C3830FCT00 is supplied in Cut Tape format. Packaging selection depends on assembly process requirements and handling procedures.

3. Physical Dimensions: The MRS25000C3830FCT00 exhibits slightly larger dimensions (0.098" Dia x 0.256" L versus 0.091" Dia x 0.244" L). This variation is within standard tolerances for axial through-hole component placement and does not affect electrical performance or PCB layout compatibility for standard applications.

4. Manufacturer Preference: Selection may be driven by established supplier relationships, quality agreements, or procurement policies specific to TE Connectivity or Vishay products.

Frequently Asked Questions (FAQ)

Q: Can MRS25000C3830FCT00 be used as a direct replacement for LR1F383R in all applications?

A: Yes. Both parts are electrically identical with matching resistance values (383 Ohms), tolerance (±1%), power rating (0.6W), temperature coefficient (±50ppm/°C), and operating temperature range (-55°C to 155°C). The slight dimensional difference (0.098" Dia x 0.256" L versus 0.091" Dia x 0.244" L) is compatible with standard PCB through-hole layouts.

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

A: Tape & Box packaging supplies components on continuous tape wound in a box, suitable for automated pick-and-place assembly. Cut Tape packaging supplies components on tape segments cut to specific lengths, typically used for manual assembly or smaller batch operations. Both formats contain identical components; packaging selection depends on assembly process requirements.

Q: Are there compliance differences between the two parts?

A: No. Both LR1F383R and MRS25000C3830FCT00 are ROHS3 compliant and classified as EAR99 for export control purposes. Both meet identical regulatory and environmental standards.

Q: Does the dimensional variation affect circuit performance?

A: No. The dimensional variation between parts (0.091" Dia x 0.244" L versus 0.098" Dia x 0.256" L) does not affect electrical performance. Both parts deliver identical resistance values, tolerance, power dissipation, and temperature characteristics. Dimensional differences are within acceptable tolerances for standard through-hole PCB applications.

Q: Which part should be selected for new designs?

A: Selection is based on procurement availability, packaging requirements, and supplier preference. Both parts are active production components with identical electrical specifications. The MRS25000C3830FCT00 offers higher inventory availability, while the LR1F383R may be preferred for existing designs or established TE Connectivity supply chains.

Q: Are there any temperature or environmental performance differences?

A: No. Both parts operate across the identical temperature range (-55°C to 155°C) with matching temperature coefficients (±50ppm/°C). Environmental performance and reliability characteristics are equivalent.