WW3JB150R Equivalent & Substitute Parts

Part Overview

The WW3JB150R is a 150 Ohm, ±5% tolerance, 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 836 units in stock. Equivalent and substitute parts are identified when circuit designs require alternative packaging formats, higher power ratings, or sourcing from different manufacturers while maintaining core electrical specifications.

Substiute Parts

WW3JB150R

Stackpole Electronics IncIn Stock: 894WW3JB150R Datasheet

Current PartRFQ

WW3AJT150R

Stackpole Electronics IncIn Stock: 8359WW3AJT150R Datasheet

MFR RecommendedRFQ

WW5JT150R

Stackpole Electronics IncIn Stock: 3492WW5JT150R Datasheet

MFR RecommendedRFQ

45J150E

OhmiteIn Stock: 104645J150E Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the WW3JB150R is determined by the following core parameters: resistance value (150 Ohms), tolerance (±5%), composition (wirewound), package type (axial), and temperature coefficient (±20ppm/°C). All identified substitutes maintain these electrical specifications. Variations occur in power rating and packaging format. The WW3AJT150R provides an identical 3W rating with alternative Cut Tape packaging. The WW5JT150R and 45J150E both offer increased 5W power capability, suitable for applications requiring higher dissipation margins. The 45J150E represents a cross-manufacturer option from Ohmite's Ohmicone® 40 series.

Parameter Comparison

Engineering Selection Recommendations

All four parts maintain active production status and ROHS3 compliance. The WW3AJT150R is the direct equivalent, differing only in packaging format (Cut Tape versus Bulk). Selection between WW3JB150R and WW3AJT150R depends on assembly process requirements and tape-and-reel handling capabilities.

The WW5JT150R and 45J150E are suitable substitutes when circuit design permits higher power dissipation or when the application benefits from increased thermal margin. These 5W variants feature larger physical dimensions and are electrically interchangeable at the 150 Ohm, ±5% specification level. The WW5JT150R maintains Stackpole sourcing continuity, while the 45J150E provides cross-manufacturer redundancy from Ohmite's established Ohmicone® 40 series.

Frequently Asked Questions (FAQ)

Q: Can WW3AJT150R directly replace WW3JB150R? A: Yes. Both parts are identical in electrical specifications (150 Ohms, ±5%, 3W, wirewound, axial) and physical dimensions. The difference is packaging format: WW3JB150R is supplied in Bulk, while WW3AJT150R is supplied in Cut Tape (CT). Selection depends on assembly equipment compatibility.

Q: Are the 5W substitutes (WW5JT150R and 45J150E) electrically interchangeable? A: Yes, at the 150 Ohm, ±5% specification level. Both maintain wirewound composition, axial package type, and ±20ppm/°C temperature coefficient. The increased 5W power rating provides additional thermal headroom. Physical dimensions are larger due to higher power capability.

Q: What are the physical dimension differences? A: WW3JB150R and WW3AJT150R: 0.187" Dia x 0.560" L (4.75mm x 14.22mm). WW5JT150R: 0.312" Dia x 0.875" L (7.92mm x 22.23mm). 45J150E: 0.343" Dia x 0.937" L (8.70mm x 23.80mm). Larger dimensions for 5W parts may affect PCB layout and board space allocation.

Q: Which substitute offers the best inventory availability? A: WW3AJT150R has the highest stock level at 8256 units, followed by WW5JT150R at 3459 units, 45J150E at 937 units, and WW3JB150R at 836 units.

Q: Can I use a 5W part in a circuit designed for 3W? A: Yes. A 5W resistor can be used in applications rated for 3W operation. The higher power rating provides additional safety margin and does not degrade performance at lower power levels.

Q: What is the difference between Stackpole and Ohmite options? A: Both manufacturers produce wirewound axial resistors meeting the same electrical specifications. WW5JT150R and 45J150E are functionally equivalent. Selection may depend on supply chain strategy, preferred vendor relationships, or specific application certifications.