UB3C-200RF1 Equivalent & Substitute Parts

Part Overview

The UB3C-200RF1 is a 200 Ohm ±1% 3W axial wirewound resistor manufactured by Riedon. This through-hole component is designed for current sensing applications and features flame-proof, moisture-resistant, and pulse-withstanding characteristics. The part is currently active in production with 830 units in stock. Equivalent and substitute parts are identified when component availability is limited, supply chain disruptions occur, or design flexibility permits alternative manufacturers meeting identical electrical and mechanical specifications.

Key Parameters

Parameter	Value
Resistance	200 Ohms
Tolerance	±1%
Power Rating	3W
Composition	Wirewound
Package Type	Axial
Temperature Coefficient	±20ppm/°C
Operating Temperature Range	-55°C ~ 250°C
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)

Substitute Part Grouping Explanation

Substitute parts for the UB3C-200RF1 are qualified based on strict electrical and mechanical parameter matching:

Electrical Parameters (Must Match):

Resistance value: 200 Ohms
Tolerance: ±1%
Power rating: 3W
Temperature coefficient: ±20ppm/°C
Composition: Wirewound

Mechanical Parameters (Must Match):

Package type: Axial
Number of terminations: 2
Form factor: Through-hole

Compliance Parameters (Must Match or Exceed):

RoHS compliance status
Operating temperature range capability

All three substitute parts meet these core criteria and are therefore electrically and mechanically interchangeable with the UB3C-200RF1 in standard circuit applications.

Parameter Comparison

Parameter	UB3C-200RF1 (Riedon)	43F200E (Ohmite)	RS02B200R0FE70 (Vishay Dale)	WW3FT200R (Stackpole)
Resistance	200 Ohms	200 Ohms	200 Ohms	200 Ohms
Tolerance	±1%	±1%	±1%	±1%
Power Rating	3W	3W	3W	3W
Composition	Wirewound	Wirewound	Wirewound	Wirewound
Temperature Coefficient	±20ppm/°C	±20ppm/°C	±20ppm/°C	±20ppm/°C
Operating Temperature Range	-55°C ~ 250°C	-55°C ~ 275°C	-65°C ~ 250°C	-55°C ~ 350°C
Package Type	Axial	Axial	Axial	Axial
RoHS Status	ROHS3 Compliant	RoHS Compliant	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)	1 (Unlimited)	Not Applicable	Not Applicable
Current Inventory	830 Pcs	1029 Pcs	3352 Pcs	2082 Pcs

Engineering Selection Recommendations

All three substitute parts are active production components with full RoHS compliance certification. Selection among UB3C-200RF1, 43F200E, RS02B200R0FE70, and WW3FT200R is determined by availability and application temperature requirements:

For standard applications within -55°C to 250°C: All four parts are functionally equivalent. Selection should prioritize inventory availability and lead time.

For applications requiring extended upper temperature operation (250°C to 275°C): The 43F200E (Ohmite) extends the operating range to 275°C.

For applications requiring extended lower temperature operation (below -55°C to -65°C): The RS02B200R0FE70 (Vishay Dale) extends the lower operating limit to -65°C.

For applications requiring maximum temperature capability (up to 350°C): The WW3FT200R (Stackpole Electronics) provides the widest operating temperature range.

All parts carry ECCN EAR99 classification and HTSUS code 8533.21.0080 where applicable.

Frequently Asked Questions (FAQ)

Q: Can I substitute the UB3C-200RF1 with any of these parts in my existing design?

A: Yes. All substitute parts match the core electrical specifications (200 Ohms, ±1%, 3W, wirewound) and mechanical form factor (axial, through-hole). Direct substitution is possible without circuit redesign for applications operating within the -55°C to 250°C temperature range.

Q: What is the difference in physical size between these parts?

A: The UB3C-200RF1 measures 0.157" diameter × 0.350" length. The 43F200E is larger at 0.220" diameter × 0.594" length. The RS02B200R0FE70 and WW3FT200R are both 0.187" diameter × 0.560" length. Physical size differences may affect PCB layout and thermal management considerations.

Q: Are all these parts RoHS compliant?

A: Yes. The UB3C-200RF1, RS02B200R0FE70, and WW3FT200R are ROHS3 compliant. The 43F200E is RoHS compliant. All parts meet regulatory requirements for lead-free manufacturing.

Q: Which substitute has the best availability?

A: The RS02B200R0FE70 (Vishay Dale) has the highest current inventory at 3352 units, followed by WW3FT200R (Stackpole) at 2082 units and 43F200E (Ohmite) at 1029 units.

Q: Can I use these parts in high-temperature applications above 250°C?

A: The 43F200E operates to 275°C, and the WW3FT200R operates to 350°C. The UB3C-200RF1 and RS02B200R0FE70 are rated to 250°C maximum. Part selection must match your application's maximum operating temperature requirement.

Q: What is the difference between moisture-resistant and non-moisture-resistant variants?

A: The UB3C-200RF1 explicitly includes moisture-resistant features. The RS02B200R0FE70 and WW3FT200R are specified as moisture-resistant. The 43F200E does not list moisture resistance as a feature. For applications in humid or wet environments, moisture-resistant variants are preferred.

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