UB3C-1KF1 Equivalent & Substitute Parts

Part Overview

The UB3C-1KF1 is a 1 kOhms ±1% 3W axial wirewound resistor manufactured by Riedon. This component is designed for through-hole applications requiring current sensing capability with enhanced reliability features including flame proof, moisture resistant, pulse withstanding, and safety certifications. The part maintains Active product status with 895 units in current inventory. Substitute parts are identified when equivalent electrical specifications, mechanical compatibility, and regulatory compliance are maintained across alternative manufacturers.

Substiute Parts

UB3C-1KF1

RiedonIn Stock: 910UB3C-1KF1 Datasheet

Current PartRFQ

43F1K0E

OhmiteIn Stock: 112443F1K0E Datasheet

MFR RecommendedRFQ

RS02B1K000FE70

Vishay DaleIn Stock: 6680RS02B1K000FE70 Datasheet

MFR RecommendedRFQ

WW3FT1K00

Stackpole Electronics IncIn Stock: 4526WW3FT1K00 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the UB3C-1KF1 is determined by strict equivalence across the following parameters: resistance value (1 kOhms), tolerance (±1%), power rating (3W), composition (wirewound), package type (axial), temperature coefficient (±20ppm/°C), and regulatory compliance (ROHS3 Compliant, REACH Unaffected, EAR99 classification). All identified substitute parts meet these core electrical and mechanical criteria. Physical dimensions vary within acceptable ranges for axial through-hole mounting. Operating temperature ranges may extend beyond the primary part specification while maintaining minimum compatibility thresholds.

Parameter Comparison

Engineering Selection Recommendations

All substitute parts maintain Active product status and full compliance with ROHS3 and REACH regulations. Selection between UB3C-1KF1 and substitute options depends on physical space constraints and specific application requirements. The Riedon UB3C-1KF1 features the most compact axial profile (0.157" diameter × 0.350" length) and includes documented current sensing, flame proof, and pulse withstanding capabilities. The Ohmite 43F1K0E (Ohmicone® 40 series) offers the largest diameter (0.220") with extended length (0.594"). The Vishay Dale RS02B1K000FE70 and Stackpole WW3FT1K00 provide intermediate dimensions (0.187" diameter × 0.560" length) with documented moisture resistance. The Stackpole WW3FT1K00 extends the upper operating temperature to 350°C, exceeding the primary part specification. All parts carry identical electrical parameters and regulatory certifications, supporting direct functional substitution within axial through-hole mounting footprints.

Frequently Asked Questions (FAQ)

Q: Can the 43F1K0E substitute for the UB3C-1KF1 in space-constrained applications? A: The 43F1K0E has a larger axial profile (0.220" diameter × 0.594" length) compared to the UB3C-1KF1 (0.157" diameter × 0.350" length). Physical space availability must be confirmed before substitution.

Q: What is the primary difference between the Vishay Dale RS02B1K000FE70 and Stackpole WW3FT1K00? A: Both parts share identical electrical specifications and intermediate dimensions (0.187" diameter × 0.560" length). The Stackpole WW3FT1K00 operates to 350°C maximum, while the Vishay Dale part operates to 250°C maximum. Selection depends on upper temperature requirements.

Q: Are all substitute parts ROHS3 compliant? A: Yes. The UB3C-1KF1 and all listed substitute parts (43F1K0E, RS02B1K000FE70, WW3FT1K00) are ROHS3 Compliant and REACH Unaffected.

Q: Does the UB3C-1KF1 have documented moisture resistance? A: The UB3C-1KF1 includes moisture resistant as a documented feature with MSL rating of 1 (Unlimited). The Ohmite 43F1K0E does not specify moisture resistance features. The Vishay Dale RS02B1K000FE70 and Stackpole WW3FT1K00 both document moisture resistant composition.

Q: Can these parts be used interchangeably in PCB designs? A: Electrical substitution is supported across all parts due to matched resistance, tolerance, power rating, and temperature coefficient values. Physical PCB footprint compatibility must be verified, as axial dimensions vary between manufacturers.