F20J5R0 Equivalent & Substitute Parts

Part Overview

The F20J5R0 is a 5 Ohms ±5% 20W wirewound chassis mount resistor manufactured by Ohmite, part of the Stackohm® 250 series. This component is designed for applications requiring high power dissipation with stable resistance values across extended temperature ranges. The part maintains Active product status with 774 units currently in stock.

Substitute parts become necessary when design requirements shift toward lower power ratings, improved compliance certifications, or alternative packaging configurations while maintaining core electrical parameters.

Substiute Parts

F20J5R0

OhmiteIn Stock: 854F20J5R0 Datasheet

Current PartRFQ

F10J5R0E

OhmiteIn Stock: 1021F10J5R0E Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

The F10J5R0E qualifies as a parametric equivalent based on the following criteria:

Matching Parameters:

• Resistance value: 5 Ohms
• Tolerance: ±5%
• Composition: Wirewound
• Temperature Coefficient: ±400ppm/°C
• Operating Temperature Range: -55°C to 350°C
• Coating/Housing Type: Vitreous Enamel Coated
• Mounting Feature: Flange Braces, Right Angle
• Lead Style: Solder Lugs
• Package/Case: Radial, Flat Oval
• Physical Dimensions: 0.750" L x 0.375" W (19.05mm x 9.53mm)
• Height - Seated (Max): 0.375" (9.53mm)

Differentiating Parameter:

• Power Rating: F10J5R0E is rated at 10W versus the F20J5R0 at 20W

The F10J5R0E is suitable for applications where the circuit design requires lower power dissipation than the original 20W specification while maintaining identical electrical and mechanical characteristics.

Parameter Comparison

Engineering Selection Recommendations

F20J5R0 Selection Criteria:

• Applications requiring 20W power dissipation capacity
• Designs where RoHS compliance is not a constraint
• Established supply chain with 774 units in stock

F10J5R0E Selection Criteria:

• Applications with power dissipation requirements of 10W or less
• Designs requiring ROHS3 compliance
• Moisture-sensitive environments where MSL 1 rating is beneficial
• Higher inventory availability (991 units in stock)

Both parts share identical electrical characteristics (5 Ohms ±5%, ±400ppm/°C temperature coefficient, -55°C to 350°C operating range) and mechanical specifications (mounting, lead style, physical dimensions). Selection between these parts depends on actual circuit power requirements and regulatory compliance mandates.

Frequently Asked Questions (FAQ)

Q: Can F10J5R0E replace F20J5R0 in all applications? A: F10J5R0E is suitable only for applications where the actual power dissipation does not exceed 10W. If circuit analysis confirms power dissipation below 10W, the substitute is electrically and mechanically compatible.

Q: What is the primary difference between these parts? A: The power rating differs: F20J5R0 is rated at 20W while F10J5R0E is rated at 10W. All other electrical parameters (resistance, tolerance, temperature coefficient, operating range) and mechanical specifications (dimensions, mounting, lead style) are identical.

Q: Does F10J5R0E offer compliance advantages? A: Yes. F10J5R0E is ROHS3 compliant with MSL 1 rating, whereas F20J5R0 is RoHS non-compliant. For applications subject to RoHS directives or moisture-sensitive environments, F10J5R0E provides regulatory and environmental advantages.

Q: Are the physical dimensions identical? A: Yes. Both parts measure 0.750" L x 0.375" W (19.05mm x 9.53mm) with a maximum seated height of 0.375" (9.53mm). They use identical flange brace mounting and solder lug lead styles, ensuring drop-in mechanical compatibility.

Q: What inventory considerations apply? A: F10J5R0E has higher stock availability (991 units) compared to F20J5R0 (774 units), which may influence procurement timelines for high-volume applications.