MR3FB20L0 Equivalent & Substitute Parts

Part Overview

The MR3FB20L0 is a 20 mOhms ±1% 3W axial through-hole resistor manufactured by Stackpole Electronics Inc. This metal foil current sense resistor is designed for precision applications requiring low resistance values with tight tolerance and high power dissipation capability. The part features moisture resistance, non-inductive, and non-magnetic construction, making it suitable for demanding electronic applications. The MR3FB20L0 is currently in active production status. Substitute parts may be required due to packaging availability, inventory constraints, or specific procurement requirements.

Substiute Parts

MR3FB20L0

Stackpole Electronics IncIn Stock: 789MR3FB20L0 Datasheet

Current PartRFQ

MR3FT20L0

Stackpole Electronics IncIn Stock: 4859MR3FT20L0 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

The MR3FT20L0 qualifies as a direct substitute for the MR3FB20L0 based on the following criteria:

All electrical parameters are identical: 20 mOhms resistance value, ±1% tolerance, and 3W power rating. The composition, construction features (current sense, moisture resistant, non-inductive, non-magnetic), and operating temperature range (-55°C to 275°C) are unchanged. Both parts are manufactured by Stackpole Electronics Inc within the same MR series and maintain active product status.

The only difference between these parts is packaging format: MR3FB20L0 is supplied in Bulk packaging, while MR3FT20L0 is supplied in Cut Tape (CT) packaging. This distinction affects procurement and assembly processes but does not alter electrical or mechanical performance.

Compliance certifications remain consistent: both parts are ROHS3 compliant, REACH unaffected, and classified under ECCN EAR99 and HTSUS 8533.21.0090.

Parameter Comparison

Engineering Selection Recommendations

The MR3FT20L0 is a valid substitute for the MR3FB20L0 in all electrical and mechanical applications. Both parts maintain identical performance specifications, dimensional characteristics, and regulatory compliance status. Selection between these parts should be based on procurement and assembly requirements: Bulk packaging (MR3FB20L0) is suitable for high-volume manual assembly or reel-fed processes, while Cut Tape packaging (MR3FT20L0) is optimized for automated pick-and-place assembly systems. Both parts are active products with established supply chains and equivalent reliability profiles.

Frequently Asked Questions (FAQ)

Q: Can MR3FT20L0 be used as a direct replacement for MR3FB20L0? A: Yes. Both parts are electrically and mechanically identical with the same resistance value (20 mOhms), tolerance (±1%), power rating (3W), and physical dimensions. The only difference is packaging format.

Q: What is the difference between Bulk and Cut Tape packaging? A: Bulk packaging supplies loose components suitable for manual handling and reel-fed assembly. Cut Tape packaging provides components on carrier tape, optimized for automated assembly equipment. Both formats contain the same component.

Q: Are there any compliance differences between these parts? A: No. Both MR3FB20L0 and MR3FT20L0 share identical RoHS3 compliance, REACH status, ECCN classification, and HTSUS codes.

Q: Which part should I specify for automated assembly? A: MR3FT20L0 (Cut Tape) is recommended for automated pick-and-place assembly systems. MR3FB20L0 (Bulk) is suitable for manual assembly or reel-fed processes.

Q: Do these parts have the same operating temperature range? A: Yes. Both parts operate across -55°C to 275°C.

Q: Are the physical dimensions identical? A: Yes. Both parts measure 0.205" diameter x 0.560" length (5.21mm x 14.22mm) with identical axial package configuration.