TNP10SC50R0FE Equivalent & Substitute Parts

Part Overview

The TNP10SC50R0FE is a 50 Ohm, 1% tolerance, 10W through-hole resistor manufactured by Ohmite in the TNP10 series. This thin film, moisture-resistant component features a TO-126-2 package configuration and operates across a temperature range of -55°C to 155°C. The product is currently obsolete, making identification of suitable substitute components essential for ongoing system support and procurement planning.

Substiute Parts

TNP10SC50R0FE

OhmiteIn Stock: 1006TNP10SC50R0FE Datasheet

Current PartRFQ

TBH25PR050JE

OhmiteIn Stock: 837TBH25PR050JE Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the TNP10SC50R0FE is constrained by the following critical parameters: resistance value (50 Ohms), power dissipation capability (10W minimum), package footprint compatibility (TO-126-2), and operating temperature range (-55°C to 155°C). The tolerance specification (±1%) and thin film composition establish baseline accuracy and stability requirements.

The identified substitute, TBH25PR050JE, presents a functional alternative with the same 50 Ohm resistance value and compatible operating temperature range. However, this substitute introduces trade-offs in tolerance (±5% versus ±1%), composition (thick film versus thin film), power rating (25W versus 10W), and package type (TO-220-2 versus TO-126-2). These differences must be evaluated against specific application requirements.

Parameter Comparison

Engineering Selection Recommendations

The TBH25PR050JE serves as an active alternative to the obsolete TNP10SC50R0FE. Both components maintain ROHS3 compliance and are manufactured by Ohmite, ensuring regulatory consistency. The substitute provides higher power dissipation capacity (25W versus 10W), which offers design margin in thermal management scenarios.

Critical differences require circuit-level evaluation: the tolerance specification widens from ±1% to ±5%, the temperature coefficient increases from ±50ppm/°C to ±200ppm/°C, and the package transitions from TO-126-2 to TO-220-2. The operating temperature maximum decreases by 5°C (155°C to 150°C). Applications requiring precision matching, low drift characteristics, or specific thermal performance at the upper temperature limit must account for these parameter shifts.

Frequently Asked Questions (FAQ)

Q: Can TBH25PR050JE directly replace TNP10SC50R0FE in existing designs?

A: Direct replacement requires circuit validation. While both components provide 50 Ohm resistance and operate across overlapping temperature ranges, the tolerance specification (±5% versus ±1%), temperature coefficient (±200ppm/°C versus ±50ppm/°C), and package type (TO-220-2 versus TO-126-2) differ significantly. PCB layout modifications are necessary to accommodate the larger TO-220-2 package.

Q: What are the key substitution criteria for this resistor category?

A: Substitution is determined by resistance value, power rating, tolerance, operating temperature range, and package compatibility. The TNP10SC50R0FE requires a minimum 10W power rating, 50 Ohm nominal value, and TO-126-2 package footprint. Tolerance and temperature coefficient specifications define acceptable performance drift.

Q: Does the higher power rating of TBH25PR050JE create compatibility issues?

A: Higher power rating does not create incompatibility. The 25W rating of TBH25PR050JE provides additional thermal margin and does not negatively impact circuit function when the application requires only 10W dissipation. However, the thicker film composition and increased temperature coefficient may affect circuit stability in precision applications.

Q: Are there package considerations for PCB integration?

A: Yes. The TNP10SC50R0FE uses TO-126-2 package with dimensions 0.335" L x 0.122" W (8.50mm x 3.10mm). The TBH25PR050JE uses TO-220-2 package with dimensions 0.402" L x 0.187" W (10.20mm x 4.75mm). PCB layout redesign is required to accommodate the larger footprint and different lead spacing.

Q: What compliance certifications apply to both components?

A: Both TNP10SC50R0FE and TBH25PR050JE maintain ROHS3 compliance. Both are classified under ECCN EAR99 for export control purposes. Moisture sensitivity levels differ: TNP10SC50R0FE is MSL 1 (Unlimited), while TBH25PR050JE is Not Applicable.