UB3C-1K2F8 Equivalent & Substitute Parts

Part Overview

The UB3C-1K2F8 is a 1.2 kOhms ±1% 3W axial wirewound resistor manufactured by Riedon. This component is designed for through-hole applications requiring precision current sensing with enhanced reliability features including flame proof, moisture resistant, pulse withstanding, and safety certifications. The part maintains Active product status with 703 units currently in stock. Substitute parts are identified when equivalent electrical specifications and mechanical compatibility are maintained across the same resistance value, tolerance, power rating, and package type.

Substiute Parts

UB3C-1K2F8

RiedonIn Stock: 812UB3C-1K2F8 Datasheet

Current PartRFQ

43F1K2E

OhmiteIn Stock: 116243F1K2E Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the UB3C-1K2F8 are qualified based on strict equivalence of the following critical parameters:

• Resistance value: 1.2 kOhms
• Tolerance: ±1%
• Power rating: 3W
• Composition: Wirewound
• Package configuration: Axial through-hole
• Temperature coefficient: ±20ppm/°C
• RoHS3 compliance status

The substitute part 43F1K2E from Ohmite meets all electrical specifications and maintains axial package compatibility. Physical dimensions differ between manufacturers due to design variations, but both parts function identically in circuit applications where axial lead spacing accommodates standard PCB hole patterns.

Parameter Comparison

Engineering Selection Recommendations

Both the UB3C-1K2F8 and 43F1K2E are Active status components with ROHS3 compliance and REACH unaffected certification. Selection between these parts depends on packaging requirements and physical space constraints. The UB3C-1K2F8 offers a more compact form factor with tape and reel packaging suitable for automated assembly. The 43F1K2E provides bulk packaging and larger physical dimensions. Both parts satisfy identical electrical performance requirements for 1.2 kOhms ±1% 3W applications. Inventory availability should be evaluated based on production volume and lead time requirements.

Frequently Asked Questions (FAQ)

Q: Can the 43F1K2E replace the UB3C-1K2F8 in my circuit?

A: Yes. Both parts share identical electrical specifications: 1.2 kOhms resistance, ±1% tolerance, 3W power rating, wirewound composition, and ±20ppm/°C temperature coefficient. The axial package configuration is compatible with standard through-hole PCB layouts.

Q: What are the physical differences between these parts?

A: The UB3C-1K2F8 measures 0.157" diameter × 0.350" length. The 43F1K2E measures 0.220" diameter × 0.594" length. These dimensional variations are typical among wirewound resistor manufacturers and do not affect electrical performance. PCB layout must accommodate the larger body size of the 43F1K2E.

Q: Are there packaging differences I should consider?

A: The UB3C-1K2F8 is supplied in tape and reel format suitable for pick-and-place assembly. The 43F1K2E is supplied in bulk packaging. Packaging selection depends on assembly process requirements and order quantities.

Q: Do both parts meet compliance requirements?

A: Yes. Both the UB3C-1K2F8 and 43F1K2E are ROHS3 compliant and REACH unaffected. Both carry EAR99 ECCN classification and 8533.21.0080 HTSUS code.

Q: What is the temperature operating range for these resistors?

A: The UB3C-1K2F8 operates from -55°C to 250°C. Operating temperature range for the 43F1K2E was not provided in manufacturer specifications but shares the same ±20ppm/°C temperature coefficient.