WW3JB47R0 Equivalent & Substitute Parts

Part Overview

The WW3JB47R0 is a 47 Ohm ±5% 3W axial wirewound resistor manufactured by Stackpole Electronics Inc. This through-hole component features moisture-resistant construction and operates across a wide temperature range from -55°C to 350°C. The part is currently active in production with ROHS3 compliance. Substitute parts are identified when equivalent electrical specifications and mechanical compatibility are required due to inventory constraints, packaging preferences, or tolerance requirements.

Substiute Parts

WW3JB47R0

Stackpole Electronics IncIn Stock: 984WW3JB47R0 Datasheet

Current PartRFQ

WW3FT47R0

Stackpole Electronics IncIn Stock: 4792WW3FT47R0 Datasheet

UpgradeRFQ

43J47RE

OhmiteIn Stock: 99143J47RE Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the WW3JB47R0 is determined by the following critical parameters: resistance value (47 Ohms), power rating (3W), composition (wirewound), package type (axial), and compliance certifications (ROHS3). The substitute parts identified maintain these core electrical and mechanical specifications.

WW3FT47R0 qualifies as an upgrade substitute due to improved tolerance (±1% versus ±5%) while maintaining identical resistance, power rating, composition, package type, temperature coefficient, and operating temperature range. The primary difference is packaging format (Cut Tape versus Bulk) and enhanced tolerance specification.

43J47RE qualifies as a manufacturer-recommended substitute from Ohmite's Ohmicone® 40 series. This part maintains the same resistance (47 Ohms), power rating (3W), tolerance (±5%), composition (wirewound), package type (axial), temperature coefficient (±20ppm/°C), and compliance status (ROHS3). Physical dimensions vary slightly (0.220" Dia x 0.594" L versus 0.187" Dia x 0.560" L), which remains compatible with standard axial component footprints.

Parameter Comparison

Engineering Selection Recommendations

All three parts maintain active product status and ROHS3 compliance, qualifying them for direct substitution in applications requiring 47 Ohm 3W axial wirewound resistors.

WW3FT47R0 is selected when tighter tolerance specifications (±1%) are required without compromising any electrical or thermal characteristics. This upgrade maintains identical performance parameters while offering improved accuracy. Cut Tape packaging suits automated assembly processes.

43J47RE is selected when Stackpole inventory is unavailable or when Ohmite component qualification is required. This part maintains specification parity with the original WW3JB47R0, including identical tolerance (±5%), temperature coefficient, and operating range. Slight dimensional variation does not affect standard through-hole PCB compatibility.

Frequently Asked Questions (FAQ)

Q: Can WW3FT47R0 be used as a direct replacement for WW3JB47R0? A: Yes. WW3FT47R0 is a direct substitute with superior tolerance (±1% versus ±5%). All electrical specifications, power rating, temperature range, and compliance certifications are identical. The only differences are packaging format and tolerance grade.

Q: What is the primary difference between WW3JB47R0 and 43J47RE? A: Both parts share identical electrical specifications: 47 Ohms, ±5% tolerance, 3W power rating, wirewound composition, and ±20ppm/°C temperature coefficient. The 43J47RE is manufactured by Ohmite rather than Stackpole and has slightly larger physical dimensions (0.220" Dia x 0.594" L versus 0.187" Dia x 0.560" L). Both are ROHS3 compliant and operate across the same temperature range.

Q: Are there packaging considerations when substituting these parts? A: WW3JB47R0 and 43J47RE are supplied in Bulk packaging, while WW3FT47R0 is supplied in Cut Tape format. Bulk packaging is typical for manual assembly or reel-fed processes, while Cut Tape suits automated pick-and-place equipment. Electrical performance is unaffected by packaging format.

Q: Do all substitute parts meet the same compliance requirements? A: Yes. WW3JB47R0, WW3FT47R0, and 43J47RE are all ROHS3 compliant and REACH unaffected, meeting identical regulatory standards for electronic component use.

Q: Can 43J47RE be used in applications originally designed for WW3JB47R0? A: Yes. The 43J47RE maintains all critical electrical and thermal specifications. The slight increase in physical dimensions (0.033" diameter and 0.034" length) remains compatible with standard axial component footprints and does not affect circuit performance.