Ohmite 20J1K2 Equivalent & Substitute Parts

Part Overview

The Ohmite 20J1K2 is a 1.2 kOhms ±5% 10W through-hole axial wirewound resistor with flame retardant coating and safety features. This component is classified as Active product status and is currently in stock with 1086 units available. Equivalent and substitute parts are identified when electrical parameters (resistance value, tolerance, power rating, temperature coefficient) and mechanical specifications (package type, termination style, dimensions) align within acceptable engineering tolerances for the application.

Substiute Parts

20J1K2

OhmiteIn Stock: 118620J1K2 Datasheet

Current PartRFQ

ALSR101K200FE12

Vishay DaleIn Stock: 1209ALSR101K200FE12 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the Ohmite 20J1K2 are qualified based on the following criteria:

Electrical Compatibility:

• Resistance value: 1.2 kOhms (exact match required)
• Temperature coefficient: ±30ppm/°C (matching specification)
• Composition: Wirewound (same technology)

Mechanical Compatibility:

• Package type: Axial (same form factor)
• Termination style: 2-pin axial leads
• Physical dimensions: Compatible with standard axial component footprints

Performance Parameters:

• Power rating: Equal to or greater than 10W
• Tolerance: Equal to or tighter than ±5%

Substitutes meeting these criteria can be used interchangeably in applications where the Ohmite 20J1K2 is specified, provided that compliance requirements and environmental operating conditions are satisfied.

Parameter Comparison

Engineering Selection Recommendations

Ohmite 20J1K2 Selection Criteria:

• Applications requiring 10W power dissipation capacity
• Designs where RoHS non-compliance is acceptable
• Specifications calling for flame retardant coating and safety features
• Standard tolerance ±5% applications

Vishay Dale ALSR101K200FE12 Selection Criteria:

• Applications requiring ROHS3 compliance
• Designs where 7W power rating is sufficient
• Applications benefiting from tighter ±1% tolerance
• Moisture-resistant environments
• Operating temperature range -65°C to 250°C is required

The Vishay Dale ALSR101K200FE12 provides improved tolerance and regulatory compliance but has a lower power rating (7W versus 10W). Component selection must account for actual circuit power dissipation requirements.

Frequently Asked Questions (FAQ)

Q: Can the Vishay Dale ALSR101K200FE12 replace the Ohmite 20J1K2 in all applications?

A: The Vishay Dale ALSR101K200FE12 is electrically compatible for resistance value and temperature coefficient. However, the 7W power rating is lower than the 10W rating of the Ohmite 20J1K2. Substitution is valid only when circuit power dissipation does not exceed 7W. Additionally, the Ohmite part is RoHS non-compliant while the Vishay Dale part is ROHS3 compliant; regulatory requirements must be evaluated.

Q: Are the physical dimensions compatible?

A: Both parts use axial package type with 2-pin terminations. The Vishay Dale ALSR101K200FE12 is physically smaller (0.312" Dia x 1.730" L versus 0.394" Dia x 1.858" L). This smaller footprint is compatible with standard axial component mounting but may require layout verification in space-constrained designs.

Q: What is the significance of tolerance differences?

A: The Ohmite 20J1K2 has ±5% tolerance while the Vishay Dale ALSR101K200FE12 has ±1% tolerance. The tighter tolerance of the substitute part provides improved accuracy and may be beneficial in precision circuit applications. Both tolerances are acceptable for general-purpose resistor applications.

Q: Does the operating temperature range affect substitution?

A: The Ohmite 20J1K2 does not specify an operating temperature range in the provided data. The Vishay Dale ALSR101K200FE12 specifies -65°C to 250°C. If the application requires operation outside this range, the Ohmite part specifications must be obtained from the manufacturer.

Q: What compliance considerations apply?

A: The Ohmite 20J1K2 is RoHS non-compliant. The Vishay Dale ALSR101K200FE12 is ROHS3 compliant. Applications subject to RoHS regulations must use the Vishay Dale part or confirm that RoHS exemptions apply to the Ohmite part.