UB3C-270RF1 Equivalent & Substitute Parts

Part Overview

The UB3C-270RF1 is a 270 Ohms ±1% 3W through-hole resistor in axial package manufactured by Riedon. This wirewound resistor is designed for current sense applications and features flame proof, moisture resistant, pulse withstanding, and safety certifications. The part is active in production with 1115 units in stock. Equivalent and substitute parts are identified to support procurement flexibility, inventory management, and supply chain continuity.

Substiute Parts

UB3C-270RF1

RiedonIn Stock: 1204UB3C-270RF1 Datasheet

Current PartRFQ

RS02B270R0FE70

Vishay DaleIn Stock: 1628RS02B270R0FE70 Datasheet

MFR RecommendedRFQ

WW3FT270R

Stackpole Electronics IncIn Stock: 3356WW3FT270R Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the UB3C-270RF1 are qualified based on the following electrical and mechanical parameters:

• Resistance value: 270 Ohms
• Tolerance: ±1%
• Power rating: 3W
• Composition: Wirewound
• Package: Axial through-hole
• Temperature coefficient: ±20ppm/°C
• RoHS3 compliance
• REACH unaffected status

All substitute parts maintain these core specifications. Variations in physical dimensions, operating temperature range, and packaging format (bulk vs. cut tape) do not affect functional equivalence for standard circuit applications.

Parameter Comparison

Engineering Selection Recommendations

All three parts are active products with ROHS3 compliance and REACH unaffected status, meeting current regulatory requirements for electronic component procurement.

RS02B270R0FE70 (Vishay Dale) extends the lower operating temperature limit to -65°C, providing additional margin for cold environment applications compared to the UB3C-270RF1 baseline of -55°C.

WW3FT270R (Stackpole Electronics Inc) extends the upper operating temperature limit to 350°C, providing enhanced thermal performance for high-temperature circuit environments.

Physical dimensions differ between the UB3C-270RF1 (4.00mm x 8.90mm) and both substitute parts (4.75mm x 14.22mm). PCB layout and mechanical clearance must be verified before substitution in space-constrained applications.

Frequently Asked Questions (FAQ)

Q: Can RS02B270R0FE70 replace UB3C-270RF1 in all applications?

A: RS02B270R0FE70 is electrically equivalent for standard circuit operation. Physical dimensions are larger (4.75mm x 14.22mm vs. 4.00mm x 8.90mm), requiring verification of PCB layout clearance. Operating temperature range extends to -65°C, providing additional low-temperature margin.

Q: What are the key differences between WW3FT270R and UB3C-270RF1?

A: Both parts share identical electrical specifications (270 Ohms, ±1%, 3W, ±20ppm/°C). WW3FT270R operates to 350°C maximum temperature versus 250°C for UB3C-270RF1. Physical dimensions are larger for WW3FT270R (4.75mm x 14.22mm). Both are ROHS3 compliant and REACH unaffected.

Q: Are physical dimension differences critical for substitution?

A: Physical dimensions must be evaluated against PCB layout constraints. The UB3C-270RF1 is smaller (4.00mm x 8.90mm) than both substitute parts (4.75mm x 14.22mm). Verify available board space and component clearance before substitution.

Q: Do all substitute parts meet the same compliance standards?

A: Yes. UB3C-270RF1, RS02B270R0FE70, and WW3FT270R are all ROHS3 compliant and REACH unaffected, meeting current regulatory requirements for electronic component use.

Q: Which substitute part should be selected for extended temperature range applications?

A: WW3FT270R provides the widest operating temperature range (-55°C ~ 350°C). RS02B270R0FE70 extends the lower temperature limit to -65°C. Selection depends on specific application temperature requirements.