Ohmite 20J200 Equivalent & Substitute Parts

Part Overview

The Ohmite 20J200 is a 200 Ohm, 10W axial wirewound resistor with ±5% tolerance and flame retardant coating. This component is designed for through-hole applications requiring high power dissipation in a compact axial package. The part is currently active in production with 1111 units in stock. Substitute parts are identified when equivalent electrical performance can be maintained within the allowed parameter ranges for this resistor category, particularly when improved compliance status or enhanced specifications are required for specific applications.

Substiute Parts

20J200

OhmiteIn Stock: 117720J200 Datasheet

Current PartRFQ

ALSR10200R0FE12

Vishay DaleIn Stock: 1144ALSR10200R0FE12 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the Ohmite 20J200 are qualified based on the following criteria:

• Resistance Value: Must be 200 Ohms
• Package Type: Must be Axial through-hole configuration
• Composition: Must be Wirewound
• Temperature Coefficient: ±30ppm/°C or better
• Tolerance: ±5% or tighter (±1% is acceptable)
• Power Rating: Minimum 7W (lower than 10W original but within acceptable substitution range for most applications)

The Vishay Dale ALSR10200R0FE12 meets all substitution criteria with improved tolerance (±1% vs ±5%), enhanced RoHS3 compliance status, and moisture-resistant construction. The 7W power rating represents a reduction from the original 10W specification and must be evaluated against actual circuit requirements.

Parameter Comparison

Engineering Selection Recommendations

The Vishay Dale ALSR10200R0FE12 is a qualified substitute for the Ohmite 20J200 based on electrical equivalence and compliance improvements. Selection between these parts should be determined by:

RoHS Compliance Requirements: The ALSR10200R0FE12 is ROHS3 compliant, whereas the 20J200 is non-compliant. Applications subject to RoHS regulations must use the Vishay Dale part.

Power Dissipation Capacity: The original 20J200 is rated at 10W, while the substitute is rated at 7W. Circuit designs operating at power levels between 7W and 10W require thermal analysis to confirm the substitute part can safely dissipate the required power without exceeding maximum junction temperature.

Tolerance Specification: The ALSR10200R0FE12 provides ±1% tolerance compared to the ±5% tolerance of the 20J200. This tighter tolerance may improve circuit performance in precision applications but is not required for direct substitution.

Physical Footprint: The substitute part is physically smaller (0.312" diameter vs 0.394" diameter). PCB layout compatibility must be confirmed, though the smaller size typically presents no mechanical obstruction.

Environmental Conditions: The ALSR10200R0FE12 specifies an operating temperature range of -65°C to 250°C. Applications requiring operation outside this range must retain the original 20J200.

Frequently Asked Questions (FAQ)

Q: Can the Vishay Dale ALSR10200R0FE12 directly replace the Ohmite 20J200 in all applications?

A: Direct replacement is possible for applications operating at 7W or below. Applications requiring the full 10W power rating of the original part must be re-evaluated. The substitute part is electrically equivalent in resistance, tolerance, and temperature coefficient. Physical dimensions are smaller, which typically does not present compatibility issues in through-hole designs.

Q: What is the significance of the RoHS compliance difference?

A: The Ohmite 20J200 is RoHS non-compliant, while the Vishay Dale ALSR10200R0FE12 is ROHS3 compliant. Products destined for markets with RoHS regulations (EU, China, and others) must use compliant components. Non-compliant parts may be restricted or prohibited in these markets.

Q: How does the ±1% tolerance of the substitute compare to the ±5% tolerance of the original?

A: The ±1% tolerance of the ALSR10200R0FE12 is tighter than the ±5% tolerance of the 20J200. This means the substitute part will have a resistance value closer to the nominal 200 Ohm specification. For most general-purpose applications, both tolerances are acceptable. Precision circuits may benefit from the tighter tolerance.

Q: Are the physical dimensions compatible with existing PCB layouts?

A: The substitute part is smaller in diameter (0.312" vs 0.394") and slightly shorter (1.730" vs 1.858"). These dimensions are compatible with standard through-hole PCB designs. The smaller size may provide additional PCB routing flexibility.

Q: What is the operating temperature range for each part?

A: The Ohmite 20J200 does not specify an operating temperature range in the provided data. The Vishay Dale ALSR10200R0FE12 operates from -65°C to 250°C. Applications requiring operation outside the Vishay Dale range must use the original Ohmite part or confirm compatibility through the manufacturer.

Q: Can I use the substitute part in a circuit designed for 10W dissipation?

A: The substitute part is rated for 7W maximum. Using it in a circuit requiring 10W dissipation will cause the part to exceed its power rating, resulting in overheating and potential failure. Circuit redesign or use of the original 10W part is required for applications with power requirements above 7W.