RJ-4EW201 Equivalent & Substitute Parts

Part Overview

The RJ-4EW201 is a 200 Ohm, 0.5W through-hole trimmer potentiometer manufactured by Nidec Components Corporation. This cermet-based component features top adjustment with PC pin termination and is designed for applications requiring precision resistance tuning in compact form factors. The part maintains Active product status with full RoHS3 compliance and unlimited moisture sensitivity rating (MSL 1). Substitute parts are identified when equivalent electrical specifications and mechanical compatibility requirements are met within the same functional category.

Substiute Parts

RJ-4EW201

Nidec Components CorporationIn Stock: 1199RJ-4EW201 Datasheet

Current PartRFQ

25PR200LF

TT Electronics/BIIn Stock: 512025PR200LF Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

The 25PR200LF qualifies as a direct substitute based on the following critical parameters:

• Identical resistance value: 200 Ohms
• Matching power rating: 0.5W (1/2W)
• Equivalent tolerance: ±10%
• Identical temperature coefficient: ±100ppm/°C
• Same number of turns: 1
• Matching adjustment type: Top Adjustment
• Identical resistive material: Cermet
• Same mounting type: Through Hole
• Matching termination style: PC Pins

Both parts operate within the same electrical performance envelope and share identical functional specifications. Physical dimensions differ (RJ-4EW201: Round 0.193" Dia vs. 25PR200LF: Square 0.270" x 0.270"), which may affect PCB layout compatibility but does not alter electrical substitutability.

Parameter Comparison

Engineering Selection Recommendations

Both the RJ-4EW201 and 25PR200LF maintain Active product status with full regulatory compliance. The RJ-4EW201 carries RoHS3 certification, while the 25PR200LF holds RoHS compliance. Both parts are REACH Unaffected and classified under ECCN EAR99 with matching HTSUS code 8533.40.8050.

Selection between these parts should be based on:

• PCB layout constraints: The RJ-4EW201's smaller round form factor (4.90mm diameter) suits space-restricted applications, while the 25PR200LF's larger square footprint (6.86mm x 6.86mm) may require additional board space.
• Packaging requirements: RJ-4EW201 is supplied in Bulk packaging; 25PR200LF is supplied in Tube packaging.
• Supply chain availability: Current inventory shows 1100 pcs for RJ-4EW201 and 5068 pcs for 25PR200LF.

Both parts deliver identical electrical performance and are suitable for direct substitution where mechanical constraints permit.

Frequently Asked Questions (FAQ)

Q: Can the 25PR200LF directly replace the RJ-4EW201 in my circuit?

A: Yes, from an electrical standpoint. Both parts share identical resistance (200 Ohms), power rating (0.5W), tolerance (±10%), temperature coefficient (±100ppm/°C), and adjustment characteristics. Physical dimensions differ, so verify PCB footprint compatibility before implementation.

Q: What is the primary difference between these two parts?

A: The main differences are physical form factor and packaging. The RJ-4EW201 features a round 0.193" diameter body, while the 25PR200LF has a square 0.270" x 0.270" body. The RJ-4EW201 is supplied in Bulk packaging; the 25PR200LF in Tube packaging.

Q: Are both parts RoHS compliant?

A: Yes. The RJ-4EW201 is RoHS3 Compliant, and the 25PR200LF is RoHS Compliant. Both meet environmental regulatory requirements.

Q: Do these parts have the same moisture sensitivity rating?

A: The RJ-4EW201 has MSL 1 (Unlimited). The 25PR200LF lists MSL as Not Applicable. Both are suitable for standard storage and handling conditions.

Q: Which part should I choose for a new design?

A: Selection depends on available PCB space and packaging preferences. The RJ-4EW201's compact round form factor suits space-constrained layouts. The 25PR200LF offers higher current inventory availability. Both deliver equivalent electrical performance.