UB3C-200RF8 Equivalent & Substitute Parts

Part Overview

The UB3C-200RF8 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 1012 units in stock. Equivalent and substitute parts are identified when component availability changes, supply chain disruptions occur, or design flexibility is required while maintaining electrical and mechanical compatibility.

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-200RF8 are qualified based on the following criteria:

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 through-hole
Number of terminations: 2

Compliance Parameters (Must Match or Exceed):

RoHS compliance status
Operating temperature range capability

All three substitute parts meet these core requirements and are functionally interchangeable in the UB3C-200RF8 application.

Parameter Comparison

Parameter	UB3C-200RF8 (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
Size / Dimension	0.157" Dia x 0.350" L (4.00mm x 8.90mm)	0.220" Dia x 0.594" L (5.60mm x 15.10mm)	0.187" Dia x 0.560" L (4.75mm x 14.22mm)	0.187" Dia x 0.560" L (4.75mm x 14.22mm)
RoHS Status	ROHS3 Compliant	RoHS Compliant	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)	1 (Unlimited)	Not Applicable	Not Applicable
Product Status	Active	Active	Active	Active
Inventory Availability	1012 Pcs	1029 Pcs	3352 Pcs	2082 Pcs

Engineering Selection Recommendations

All three substitute parts are active products with current manufacturing status and meet the electrical specifications of the UB3C-200RF8. Selection among these alternatives should be based on the following factors:

Physical Space Constraints: The UB3C-200RF8 has the smallest physical footprint (4.00mm diameter × 8.90mm length). The 43F200E is significantly larger (5.60mm diameter × 15.10mm length), while RS02B200R0FE70 and WW3FT200R are intermediate in size (4.75mm diameter × 14.22mm length). PCB layout requirements may necessitate selection of the original part or the smaller alternatives.

Temperature Range Requirements: The WW3FT200R offers the widest operating temperature range (-55°C ~ 350°C), followed by 43F200E (-55°C ~ 275°C). The UB3C-200RF8 and RS02B200R0FE70 both operate to 250°C. Applications requiring extended high-temperature performance should consider WW3FT200R.

Compliance and Certifications: All parts are RoHS compliant. The UB3C-200RF8 and RS02B200R0FE70 carry ROHS3 compliance designation. The UB3C-200RF8 and 43F200E maintain MSL 1 (Unlimited) moisture sensitivity ratings, suitable for unrestricted storage and handling.

Supply Chain Availability: RS02B200R0FE70 has the highest inventory level (3352 units), followed by WW3FT200R (2082 units) and 43F200E (1029 units).

Frequently Asked Questions (FAQ)

Q: Can I use any of these substitute parts interchangeably with the UB3C-200RF8?

A: Yes, all three substitute parts are electrically and mechanically compatible. They share identical resistance values (200 Ohms), tolerance (±1%), power rating (3W), temperature coefficient (±20ppm/°C), and axial package configuration. Physical dimensions vary, so PCB layout compatibility must be verified.

Q: What is the primary difference between these substitute parts?

A: The main differences are physical dimensions and maximum operating temperature. The UB3C-200RF8 is the most compact. The WW3FT200R supports the highest operating temperature (350°C). All other electrical parameters are identical.

Q: Are there any moisture sensitivity concerns with these parts?

A: The UB3C-200RF8 and 43F200E are rated MSL 1 (Unlimited), allowing unrestricted storage and handling. The RS02B200R0FE70 and WW3FT200R are rated MSL Not Applicable, indicating no moisture sensitivity restrictions. All parts are suitable for standard manufacturing environments.

Q: Which substitute part should I choose if space is limited on my PCB?

A: The UB3C-200RF8 remains the smallest option. If the original part is unavailable, neither substitute provides a smaller footprint. The RS02B200R0FE70 and WW3FT200R are identical in size (4.75mm × 14.22mm), while the 43F200E is significantly larger (5.60mm × 15.10mm).

Q: Do all parts meet current RoHS requirements?

A: Yes. The UB3C-200RF8, RS02B200R0FE70, and WW3FT200R are ROHS3 compliant. The 43F200E is RoHS compliant. All parts satisfy current regulatory requirements.

Q: What is the inventory status for these parts?

A: Current stock levels are: RS02B200R0FE70 (3352 units), WW3FT200R (2082 units), 43F200E (1029 units), and UB3C-200RF8 (1012 units). Availability may change; verify current inventory with your supplier.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message