LTO050FR0200FTE3 Equivalent & Substitute Parts

Part Overview

The LTO050FR0200FTE3 is a 20 mOhms ±1% 50W through-hole resistor manufactured by Vishay Sfernice in the LTO 50 series. This thick film, non-inductive resistor is housed in a TO-220-2 Full Pack configuration and is rated for operating temperatures from -55°C to 150°C. The part is currently listed as obsolete, making identification of suitable substitute components essential for ongoing design support and procurement.

Substiute Parts

LTO050FR0200FTE3

Vishay SferniceIn Stock: 1156LTO050FR0200FTE3 Datasheet

Current PartRFQ

LTO050FR0200JTE3

Vishay SferniceIn Stock: 859LTO050FR0200JTE3 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the LTO050FR0200FTE3 is determined by the following critical parameters:

• Resistance value: 20 mOhms (exact match required)
• Power rating: 50W (exact match required)
• Package type: TO-220-2 Full Pack (exact match required)
• Composition: Thick film, non-inductive construction
• Operating temperature range: -55°C to 150°C (minimum requirement)
• Temperature coefficient: ±700ppm/°C (maximum acceptable drift)
• RoHS compliance: ROHS3 Compliant

The LTO050FR0200JTE3 meets all critical electrical and mechanical parameters. The primary difference is tolerance specification (±5% versus ±1%), which represents a relaxation of the tolerance requirement. This substitution is valid where the application circuit can accommodate the wider tolerance band.

Parameter Comparison

Engineering Selection Recommendations

The LTO050FR0200JTE3 is the primary substitute for the obsolete LTO050FR0200FTE3. Both parts are manufactured by Vishay Sfernice within the LTO 50 series and share identical electrical performance characteristics, thermal specifications, and mechanical dimensions.

The LTO050FR0200JTE3 maintains active product status, ensuring continued availability and supply chain reliability. Both parts carry ROHS3 compliance certification, meeting regulatory requirements for hazardous substance restrictions.

The tolerance difference (±5% versus ±1%) is the only specification variance. Selection of the substitute should be based on circuit tolerance requirements. Applications requiring ±1% tolerance precision must evaluate whether the ±5% tolerance of the substitute part is acceptable for the intended function.

Frequently Asked Questions (FAQ)

Q: Can the LTO050FR0200JTE3 be used as a direct replacement for the LTO050FR0200FTE3?

A: The LTO050FR0200JTE3 is electrically and mechanically compatible with the LTO050FR0200FTE3. Both parts have identical resistance values, power ratings, package configurations, and thermal characteristics. The substitute part has a wider tolerance specification (±5% versus ±1%). Compatibility depends on whether your circuit design can function within the ±5% tolerance band.

Q: What is the significance of the tolerance difference between these parts?

A: Tolerance specifies the maximum deviation of the actual resistance value from the nominal 20 mOhms specification. The main part guarantees ±1% accuracy, while the substitute guarantees ±5% accuracy. In applications where precise resistance values are critical to circuit performance, the wider tolerance may introduce unacceptable variation. In applications where resistance value variation has minimal impact on circuit function, the substitute is suitable.

Q: Are the physical dimensions identical?

A: Yes. Both the LTO050FR0200FTE3 and LTO050FR0200JTE3 share identical dimensions: 0.409" L x 0.126" W (10.40mm x 3.20mm) with a maximum seated height of 0.799" (20.30mm). Both use the TO-220-2 Full Pack configuration with two terminations, ensuring identical PCB footprint and mounting compatibility.

Q: What is the difference in product status between these parts?

A: The LTO050FR0200FTE3 is listed as obsolete, indicating it is no longer manufactured and existing inventory is limited. The LTO050FR0200JTE3 is listed as active, meaning it is currently manufactured and available through normal supply channels. For new designs or long-term production requirements, the active substitute part is recommended.

Q: Are both parts RoHS compliant?

A: Yes. Both the LTO050FR0200FTE3 and LTO050FR0200JTE3 are ROHS3 compliant, meeting regulatory requirements for the restriction of hazardous substances in electrical and electronic equipment.