TNP10SC1K00FE Equivalent & Substitute Parts

Part Overview

The TNP10SC1K00FE is a 1 kOhms ±1% 10W through-hole resistor manufactured by Ohmite in TO-126-2 package configuration. This component features thin film construction with moisture-resistant and non-inductive characteristics, designed for precision applications requiring low temperature coefficient performance. The part is currently obsolete, necessitating identification of functionally equivalent alternatives that maintain critical electrical and mechanical compatibility for circuit board replacement and new design applications.

Substiute Parts

TNP10SC1K00FE

OhmiteIn Stock: 992TNP10SC1K00FE Datasheet

Current PartRFQ

AP836 1K J

OhmiteIn Stock: 973AP836 1K J Datasheet

MFR RecommendedRFQ

TBH25P1K00JE

OhmiteIn Stock: 1201TBH25P1K00JE Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the TNP10SC1K00FE requires matching the following critical parameters: resistance value (1 kOhms), package footprint compatibility, power dissipation capability, and regulatory compliance. The identified substitute parts maintain the same resistance value and two-terminal configuration. However, substitutes employ different package types (TO-220-2 instead of TO-126-2), which necessitates circuit board layout modification. Tolerance specifications differ between the main part (±1%) and substitutes (±5%), reflecting the shift from thin film to thick film construction. Power ratings of substitute parts (25W and 35W) exceed the original 10W specification, providing thermal margin. Temperature coefficient values and operating ranges remain within acceptable engineering parameters for most applications. All substitute parts maintain ROHS3 compliance and active product status, ensuring long-term availability.

Parameter Comparison

Engineering Selection Recommendations

Both AP836 1K J and TBH25P1K00JE are active Ohmite products with ROHS3 compliance, ensuring regulatory alignment and supply chain continuity. The TBH25P1K00JE presents the closer electrical match to TNP10SC1K00FE, maintaining identical temperature coefficient (±50ppm/°C) and matching moisture-resistant characteristics. The AP836 1K J offers higher power dissipation (35W) but introduces increased temperature coefficient drift (±100ppm/°C). Both substitutes require PCB layout redesign due to TO-220-2 package transition from the original TO-126-2 footprint. Selection between substitutes depends on circuit tolerance requirements and thermal design constraints. The TBH25P1K00JE is preferred for applications where temperature stability and moisture resistance are critical design parameters.

Frequently Asked Questions (FAQ)

Q: Can TNP10SC1K00FE be directly replaced with AP836 1K J or TBH25P1K00JE without PCB modification?

A: No. The original part uses TO-126-2 package while both substitutes use TO-220-2 package. Physical footprint, lead spacing, and mounting hole patterns differ, requiring PCB layout redesign and potential mechanical fixture changes.

Q: What is the impact of tolerance change from ±1% to ±5%?

A: Tolerance degradation affects circuit accuracy. Applications requiring precision voltage dividers, reference networks, or measurement circuits may experience increased error margins. Circuit simulation and tolerance stack analysis are necessary to determine acceptability for specific applications.

Q: Why do substitute parts have higher power ratings than the original?

A: Higher power ratings (25W and 35W versus 10W) provide thermal margin and extended operational life under sustained current conditions. This does not negatively impact circuit function; the resistor will operate at identical voltage and current levels as the original part.

Q: Are there differences in non-inductive performance between thin film and thick film construction?

A: Thin film resistors (TNP10SC1K00FE) typically exhibit superior high-frequency performance and lower parasitic inductance compared to thick film construction. Applications operating above 1 MHz may experience measurable differences in impedance behavior.

Q: What is the significance of the Current Sense feature in TBH25P1K00JE?

A: Current sense designation indicates the resistor is optimized for precision current measurement applications. This feature does not restrict use in standard resistive applications but indicates suitability for low-noise current monitoring circuits.

Q: Do all parts maintain moisture resistance?

A: TNP10SC1K00FE and TBH25P1K00JE both feature moisture-resistant construction. AP836 1K J does not specify moisture resistance. In high-humidity or condensing environments, TBH25P1K00JE is the preferred substitute.