RC2012J3R3CS Equivalent & Substitute Parts Reference

Part Overview

The RC2012J3R3CS is a 3.3 Ohm ±5% thick film chip resistor manufactured by Samsung Electro-Mechanics, rated at 0.125W (1/8W) in 0805 (2012 Metric) package format. This component is classified as Active product status and is supplied in Tape & Reel (TR) packaging. The RC2012J3R3CS features moisture-resistant construction with operating temperature range of -55°C to 155°C and is ROHS3 compliant with MSL Level 1 (Unlimited moisture sensitivity).

Equivalent and substitute parts are identified based on matching electrical specifications (resistance value, power rating, tolerance), mechanical compatibility (package size, termination count, physical dimensions), and environmental ratings (temperature range, RoHS compliance, MSL rating). Substitute parts may differ in tolerance grade, packaging format, or manufacturer-specific features while maintaining functional equivalence.

Key Parameters

Parameter	RC2012J3R3CS
Resistance Value	3.3 Ohms
Tolerance	±5%
Power Rating	0.125W (1/8W)
Package / Case	0805 (2012 Metric)
Composition	Thick Film
Operating Temperature	-55°C ~ 155°C
RoHS Status	ROHS3 Compliant
MSL Rating	1 (Unlimited)
Number of Terminations	2

Substitute Part Grouping Explanation

Substitution eligibility for the RC2012J3R3CS is determined by the following criteria:

Primary Matching Parameters:

Resistance Value: 3.3 Ohms (exact match required)
Power Rating: 0.125W / 1/8W (exact match required)
Package / Case: 0805 (2012 Metric) (exact match required)
Number of Terminations: 2 (exact match required)
Composition: Thick Film (exact match required)
Operating Temperature Range: -55°C ~ 155°C (minimum requirement)
RoHS Status: ROHS3 Compliant (minimum requirement)
MSL Rating: 1 (Unlimited) (minimum requirement)

Secondary Variation Parameters:

Tolerance: ±5% (main part) or ±1% (upgrade substitutes acceptable)
Temperature Coefficient: ±300ppm/°C (main part) or ±200ppm/°C (acceptable variation)
Packaging Format: Tape & Reel (TR) or Cut Tape (CT) (interchangeable for component selection)
Manufacturer-Specific Features: Moisture Resistant, Automotive AEC-Q200, Current Sense (optional enhancements)

Substitute parts are grouped into two categories:

Tolerance Upgrade Substitutes (±1%): Parts with tighter tolerance specifications that provide improved accuracy while maintaining all other electrical and mechanical parameters. These include RC2012F3R3CS, RC0805FR-073R3L, ERJ-6RQF3R3V, and RMCF0805FT3R30.

Direct Tolerance Match Substitutes (±5%): Parts with identical tolerance specifications. These include RMCF0805JT3R30 and RC0805JR-073R3L.

Parameter Comparison

Parameter	RC2012J3R3CS	RC2012F3R3CS	RMCF0805FT3R30	RMCF0805JT3R30	ERJ-6RQF3R3V	RC0805FR-073R3L	RC0805JR-073R3L
Manufacturer	Samsung Electro-Mechanics	Samsung Electro-Mechanics	Stackpole Electronics Inc	Stackpole Electronics Inc	Panasonic Electronic Components	YAGEO	YAGEO
Resistance	3.3 Ohms	3.3 Ohms	3.3 Ohms	3.3 Ohms	3.3 Ohms	3.3 Ohms	3.3 Ohms
Tolerance	±5%	±1%	±1%	±5%	±1%	±1%	±5%
Power Rating	0.125W	0.125W	0.125W	0.125W	0.125W	0.125W	0.125W
Package / Case	0805 (2012 Metric)	0805 (2012 Metric)	0805 (2012 Metric)	0805 (2012 Metric)	0805 (2012 Metric)	0805 (2012 Metric)	0805 (2012 Metric)
Composition	Thick Film	Thick Film	Thick Film	Thick Film	Thick Film	Thick Film	Thick Film
Temperature Coefficient	±300ppm/°C	±300ppm/°C	±200ppm/°C	±200ppm/°C	±200ppm/°C	±200ppm/°C	±200ppm/°C
Operating Temperature	-55°C ~ 155°C	-55°C ~ 155°C	-55°C ~ 155°C	-55°C ~ 155°C	-55°C ~ 155°C	-55°C ~ 155°C	-55°C ~ 155°C
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
MSL Rating	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)
Size / Dimension	0.079" L x 0.049" W (2.00mm x 1.25mm)	0.079" L x 0.049" W (2.00mm x 1.25mm)	0.079" L x 0.049" W (2.00mm x 1.25mm)	0.079" L x 0.049" W (2.00mm x 1.25mm)	0.079" L x 0.049" W (2.00mm x 1.25mm)	0.079" L x 0.049" W (2.00mm x 1.25mm)	0.079" L x 0.049" W (2.00mm x 1.25mm)
Height - Seated (Max)	0.026" (0.65mm)	0.026" (0.65mm)	0.026" (0.65mm)	0.026" (0.65mm)	0.028" (0.70mm)	0.024" (0.60mm)	0.024" (0.60mm)
Number of Terminations	2	2	2	2	2	2	2
Packaging Format	Tape & Reel (TR)	Cut Tape (CT)	Tape & Reel (TR)	Tape & Reel (TR)	Tape & Reel (TR)	Cut Tape (CT) & Digi-Reel®	Cut Tape (CT) & Digi-Reel®
Product Status	Active	Active	Active	Active	Active	Active	Active

Engineering Selection Recommendations

For Direct Replacement (Identical Specifications):

RMCF0805JT3R30 (Stackpole Electronics Inc) and RC0805JR-073R3L (YAGEO) are direct functional equivalents with matching ±5% tolerance and 0.125W power rating. Both maintain identical operating temperature range (-55°C ~ 155°C), ROHS3 compliance, and MSL Level 1 rating. RMCF0805JT3R30 includes Automotive AEC-Q200 qualification, suitable for automotive applications. RC0805JR-073R3L offers highest inventory availability (1,447,050 Pcs) and lower seated height (0.024" vs 0.026").

For Tolerance Upgrade (±1% Tolerance):

RC2012F3R3CS (Samsung Electro-Mechanics), RC0805FR-073R3L (YAGEO), ERJ-6RQF3R3V (Panasonic Electronic Components), and RMCF0805FT3R30 (Stackpole Electronics Inc) provide tighter tolerance specifications (±1%) while maintaining all other electrical and mechanical parameters. These upgrades are suitable when circuit design requires improved accuracy. ERJ-6RQF3R3V includes Automotive AEC-Q200 and Current Sense features. RC0805FR-073R3L offers high inventory (48,267 Pcs) and lower seated height (0.024").

For Automotive Applications:

RMCF0805FT3R30 and RMCF0805JT3R30 (both Stackpole Electronics Inc) and ERJ-6RQF3R3V (Panasonic Electronic Components) carry Automotive AEC-Q200 qualification. All three maintain required operating temperature range and compliance certifications.

Inventory Considerations:

RC0805JR-073R3L provides maximum stock availability (1,447,050 Pcs). RMCF0805FT3R30 offers 42,800 Pcs. RC0805FR-073R3L provides 48,267 Pcs. RC2012J3R3CS original part has 1,179 Pcs available.

All substitute parts maintain ROHS3 compliance, MSL Level 1 rating, and identical package dimensions (0805 / 2012 Metric) with two terminations.

Frequently Asked Questions (FAQ)

Q: Can RC0805JR-073R3L replace RC2012J3R3CS directly?

A: Yes. RC0805JR-073R3L is a direct functional equivalent with identical 3.3 Ohm resistance, ±5% tolerance, 0.125W power rating, 0805 package, and operating temperature range (-55°C ~ 155°C). Both are ROHS3 compliant with MSL Level 1 rating. Physical dimensions are identical (0.079" L x 0.049" W). The primary difference is manufacturer (YAGEO vs Samsung Electro-Mechanics) and seated height (0.024" vs 0.026"), which does not affect functional compatibility.

Q: What is the difference between ±5% and ±1% tolerance parts?

A: Tolerance specifies the allowable deviation from the nominal 3.3 Ohm resistance value. ±5% tolerance allows resistance between 3.135 Ohms and 3.465 Ohms. ±1% tolerance allows resistance between 3.267 Ohms and 3.333 Ohms. ±1% parts (RC2012F3R3CS, RC0805FR-073R3L, ERJ-6RQF3R3V, RMCF0805FT3R30) provide improved accuracy for precision circuit applications. Selection depends on circuit design requirements.

Q: Are Tape & Reel (TR) and Cut Tape (CT) packages interchangeable?

A: Both packaging formats contain identical components. Tape & Reel (TR) is supplied on continuous reel for automated assembly. Cut Tape (CT) is supplied in individual tape segments. Selection depends on assembly equipment and production volume. Component electrical and mechanical specifications remain identical regardless of packaging format.

Q: What does Automotive AEC-Q200 qualification mean?

A: AEC-Q200 is an automotive industry standard qualification for passive components. Parts meeting this standard (RMCF0805FT3R30, RMCF0805JT3R30, ERJ-6RQF3R3V) undergo additional testing for reliability in automotive environments including temperature cycling, vibration, and humidity resistance. These parts are suitable for automotive circuit applications where enhanced reliability is required.

Q: Can I use a ±1% tolerance part in place of a ±5% tolerance part?

A: Yes. A ±1% tolerance part (tighter tolerance) is functionally compatible with a circuit designed for ±5% tolerance. The ±1% part provides improved accuracy and will operate within the circuit's tolerance requirements. This is an upgrade substitution with no functional degradation.

Q: What is MSL Level 1 (Unlimited)?

A: MSL (Moisture Sensitivity Level) 1 indicates the component has unlimited shelf life and does not require special moisture-controlled storage or handling. The component can be stored at standard conditions without desiccant packaging or moisture barriers. All listed substitute parts carry MSL Level 1 rating.

Q: Are there height differences between substitute parts?

A: Yes. Seated height (maximum) varies slightly: RC2012J3R3CS and RC2012F3R3CS are 0.026" (0.65mm), RMCF0805FT3R30 and RMCF0805JT3R30 are 0.026" (0.65mm), ERJ-6RQF3R3V is 0.028" (0.70mm), and RC0805FR-073R3L and RC0805JR-073R3L are 0.024" (0.60mm). These minor variations do not affect PCB assembly compatibility for standard 0805 package designs. Verify clearance requirements for space-constrained applications.

Q: What is the temperature coefficient specification?

A: Temperature coefficient (±300ppm/°C or ±200ppm/°C) specifies how resistance changes with temperature. Lower values indicate better temperature stability. RC2012J3R3CS and RC2012F3R3CS have ±300ppm/°C. All other substitutes have ±200ppm/°C (improved stability). Both specifications are acceptable for standard applications. Select ±200ppm/°C parts for temperature-sensitive circuits.

Q: Which substitute part has the highest inventory?

A: RC0805JR-073R3L (YAGEO) has the highest inventory with 1,447,050 Pcs available. This part is a direct ±5% tolerance match with identical electrical specifications to RC2012J3R3CS.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message