Equivalent & Substitute Parts for TWM3J820

Part Overview

The TWM3J820 is an 820 Ohms ±5% 3W through-hole resistor with radial leads, manufactured by Ohmite using metal oxide film composition. This component features flame-proof and safety characteristics suitable for industrial and high-reliability applications. The TWM3J820 is classified as obsolete, making identification of active equivalent parts essential for ongoing procurement and design continuity.

Substiute Parts

TWM3J820

OhmiteIn Stock: 1141TWM3J820 Datasheet

Current PartRFQ

TWM3J820E

OhmiteIn Stock: 1151TWM3J820E Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the TWM3J820 is determined by strict equivalence across all critical electrical and mechanical parameters. The substitute part must match the following criteria:

• Resistance value: 820 Ohms
• Tolerance: ±5%
• Power rating: 3W
• Composition: Metal Oxide Film
• Package configuration: Radial with 2 terminations
• Operating temperature range: -55°C to 275°C
• Temperature coefficient: ±350ppm/°C
• Physical dimensions: 0.492" L x 0.354" W with maximum seated height of 1.024"

The TWM3J820E meets all these parameters and is classified as an active product, providing continuity for applications currently using the obsolete TWM3J820.

Parameter Comparison

Engineering Selection Recommendations

The TWM3J820E is the direct equivalent for the obsolete TWM3J820. Both components are manufactured by Ohmite within the TWM series and share identical electrical specifications and physical dimensions. The primary distinction is product status and regulatory compliance: the TWM3J820E is an active product with ROHS3 compliance, whereas the TWM3J820 is obsolete and RoHS non-compliant.

For new designs or component replacement in existing applications, the TWM3J820E provides full functional and mechanical compatibility with the original TWM3J820. The transition from the obsolete part to the active equivalent presents no technical barriers to implementation.

Frequently Asked Questions (FAQ)

Q: Can TWM3J820E be used as a direct replacement for TWM3J820?

A: Yes. The TWM3J820E is electrically and mechanically identical to the TWM3J820. Both components have the same resistance value (820 Ohms), tolerance (±5%), power rating (3W), operating temperature range (-55°C to 275°C), and physical dimensions. The TWM3J820E is the active equivalent.

Q: What is the difference between TWM3J820 and TWM3J820E?

A: The TWM3J820 is obsolete, while the TWM3J820E is an active product. Additionally, the TWM3J820E is ROHS3 compliant, whereas the TWM3J820 is RoHS non-compliant. All electrical and mechanical parameters are identical.

Q: Are there any packaging differences between these parts?

A: The TWM3J820 is supplied in standard packaging, while the TWM3J820E is supplied in bulk packaging. Both maintain identical radial package configuration and physical dimensions suitable for through-hole PCB assembly.

Q: Can this resistor be used in high-temperature applications?

A: Yes. Both the TWM3J820 and TWM3J820E are rated for operating temperatures from -55°C to 275°C, making them suitable for high-temperature industrial applications.

Q: What does the metal oxide film composition mean for this resistor?

A: Metal oxide film composition provides stable resistance characteristics across the operating temperature range with a temperature coefficient of ±350ppm/°C. This composition also contributes to the flame-proof and safety features of the component.