Equivalent & Substitute Parts for 43JR33E

Part Overview

The 43JR33E is a 330 mOhms ±5% 3W axial wirewound through-hole resistor manufactured by Ohmite in the Ohmicone® 40 series. This component is currently active in production with 768 units in stock. The 43JR33E is ROHS3 compliant and REACH unaffected, making it suitable for modern electronic applications requiring precision current-sensing or load-balancing resistor networks.

Equivalent and substitute parts are identified when design requirements allow tolerance relaxation, improved compliance specifications, or alternative packaging dimensions while maintaining core electrical performance at 330 mOhms and 3W power rating.

Substiute Parts

43JR33E

OhmiteIn Stock: 87843JR33E Datasheet

Current PartRFQ

43FR33E

OhmiteIn Stock: 81643FR33E Datasheet

UpgradeRFQ

ALSR03R3300JE12

Vishay DaleIn Stock: 1211ALSR03R3300JE12 Datasheet

MFR RecommendedRFQ

43JR33

OhmiteIn Stock: 94043JR33 Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the 43JR33E are classified into three categories based on electrical and mechanical compatibility:

Upgrade Substitute (43FR33E): Maintains identical resistance, power rating, package type, and dimensions while improving tolerance from ±5% to ±1%. This part is suitable when tighter tolerance specifications are required without changing physical footprint or thermal characteristics.

Manufacturer-Recommended Substitute (ALSR03R3300JE12): Maintains identical resistance, power rating, tolerance, and composition. Physical dimensions differ slightly (0.180" Dia x 0.500" L versus 0.220" Dia x 0.594" L), and operating temperature range extends to -65°C ~ 250°C. This Vishay Dale part includes moisture-resistant features and is ROHS3 compliant.

Parametric Equivalent (43JR33): Identical electrical specifications and physical dimensions to the 43JR33E. This part differs in RoHS compliance status (non-compliant) and is suitable only for applications where RoHS3 compliance is not required.

Parameter Comparison

Engineering Selection Recommendations

Select 43FR33E when circuit design requires tolerance improvement from ±5% to ±1% without modifying PCB layout. This upgrade maintains identical physical footprint and thermal characteristics while enhancing measurement accuracy in precision current-sensing applications. Both parts are ROHS3 compliant.

Select ALSR03R3300JE12 when PCB space constraints permit smaller physical dimensions (0.180" Dia x 0.500" L) and moisture-resistant construction is beneficial. This Vishay Dale part extends operating temperature range to -65°C and maintains ROHS3 compliance. Verify PCB pad spacing compatibility before substitution due to dimensional differences.

Select 43JR33 only when RoHS3 compliance is not a design requirement and identical electrical and mechanical specifications to the 43JR33E are acceptable. This part is electrically and physically interchangeable with the main part.

Frequently Asked Questions (FAQ)

Q: Can 43FR33E replace 43JR33E in all applications? A: Yes. The 43FR33E is a direct upgrade with improved ±1% tolerance, identical power rating, package type, and physical dimensions. All ROHS3-compliant applications accept this substitution.

Q: What are the physical differences between 43JR33E and ALSR03R3300JE12? A: The ALSR03R3300JE12 has a smaller diameter (0.180" versus 0.220") and shorter length (0.500" versus 0.594"). Verify PCB pad spacing and component clearance before substitution.

Q: Is 43JR33 suitable for new designs? A: The 43JR33 is electrically and mechanically identical to 43JR33E but lacks RoHS3 compliance. Use only in applications where RoHS compliance is not required.

Q: What tolerance specifications determine substitution eligibility? A: All substitute parts maintain 330 mOhms resistance and 3W power rating. Tolerance can be tightened from ±5% to ±1% without affecting compatibility. Tolerance cannot be relaxed below ±5%.

Q: Are all substitute parts rated for the same temperature range? A: No. The 43FR33E operates -55°C ~ 275°C, and ALSR03R3300JE12 operates -65°C ~ 250°C. The 43JR33E and 43JR33 do not specify operating temperature ranges. Verify application temperature requirements before selection.

Q: Which substitute part has the highest inventory availability? A: ALSR03R3300JE12 has 1142 units in stock, compared to 793 units for 43FR33E and 831 units for 43JR33.