RC2012F5491CS Equivalent & Substitute Parts

Part Overview

The RC2012F5491CS is a 5.49 kOhms ±1% thick film chip resistor manufactured by Samsung Electro-Mechanics in the 0805 (2012 Metric) package format. This surface mount device is rated for 0.125W (1/8W) power dissipation and operates across the temperature range of -55°C to 155°C. The component features moisture resistance and is ROHS3 compliant with MSL 1 (Unlimited) moisture sensitivity rating. The part is currently in active production status with 950 pieces available in inventory.

Equivalent and substitute parts are necessary when the primary manufacturer part becomes unavailable, when supply chain constraints require alternative sourcing, or when design specifications allow for functionally identical components from alternative manufacturers that meet the same electrical and mechanical requirements.

Key Parameters

Parameter	Value
Resistance	5.49 kOhms
Tolerance	±1%
Power Rating	0.125W (1/8W)
Package / Case	0805 (2012 Metric)
Composition	Thick Film
Temperature Coefficient	±100ppm/°C
Operating Temperature Range	-55°C ~ 155°C
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)
Number of Terminations	2

Substitute Part Grouping Explanation

Substitution of the RC2012F5491CS is determined by strict equivalence across the following critical parameters:

Electrical Parameters:

Resistance value: 5.49 kOhms (exact match required)
Tolerance: ±1% (exact match required)
Power rating: 0.125W / 1/8W (exact match required)
Temperature coefficient: ±100ppm/°C (exact match required)
Operating temperature range: -55°C ~ 155°C (exact match required)

Mechanical Parameters:

Package type: 0805 (2012 Metric) (exact match required)
Number of terminations: 2 (exact match required)
Physical dimensions: 0.079" L x 0.049" W (2.00mm x 1.25mm) (exact match required)

Compliance Parameters:

RoHS Status: ROHS3 Compliant (exact match required)
Moisture Sensitivity Level: 1 (Unlimited) (exact match required)
REACH Status: REACH Unaffected (exact match required)

All substitute parts listed meet these criteria. Variations in seated height (ranging from 0.020" to 0.028") remain within acceptable PCB assembly tolerances and do not affect substitutability.

Parameter Comparison

Manufacturer	Part Number	Resistance	Tolerance	Power (W)	Package	Temp Coeff	Op. Temp Range	Height Max (in)	RoHS	MSL	Product Status
Samsung Electro-Mechanics	RC2012F5491CS	5.49 kΩ	±1%	0.125	0805	±100ppm/°C	-55 ~ 155°C	0.026	ROHS3	1	Active
Bourns Inc.	CR0805-FX-5491ELF	5.49 kΩ	±1%	0.125	0805	±100ppm/°C	-55 ~ 155°C	0.024	ROHS3	1	Active
Panasonic Electronic Components	ERJ-6ENF5491V	5.49 kΩ	±1%	0.125	0805	±100ppm/°C	-55 ~ 155°C	0.028	ROHS3	1	Active
YAGEO	RC0805FR-075K49L	5.49 kΩ	±1%	0.125	0805	±100ppm/°C	-55 ~ 155°C	0.024	ROHS3	1	Active
Stackpole Electronics Inc	RMCF0805FT5K49	5.49 kΩ	±1%	0.125	0805	±100ppm/°C	-55 ~ 155°C	0.026	ROHS3	1	Active
Vishay Dale	CRCW08055K49FKEA	5.49 kΩ	±1%	0.125	0805	±100ppm/°C	-55 ~ 155°C	0.020	ROHS3	1	Active

Engineering Selection Recommendations

All listed substitute parts are functionally equivalent to the RC2012F5491CS and are suitable for direct replacement in applications where the original part is unavailable.

Direct Substitutes (Moisture Resistant Composition):

CR0805-FX-5491ELF (Bourns Inc.) - 25,937 units in stock
RC0805FR-075K49L (YAGEO) - 91,552 units in stock

These parts maintain the moisture-resistant thick film composition of the original Samsung part and are appropriate for general industrial applications.

Direct Substitutes (Automotive AEC-Q200 Rated):

ERJ-6ENF5491V (Panasonic Electronic Components) - 65,777 units in stock
RMCF0805FT5K49 (Stackpole Electronics Inc) - 18,957 units in stock
CRCW08055K49FKEA (Vishay Dale) - 1,182 units in stock

These parts carry AEC-Q200 automotive qualification and are suitable for applications requiring automotive-grade reliability. They are also compatible with general industrial use.

All substitute parts are ROHS3 compliant, REACH unaffected, and carry MSL 1 (Unlimited) moisture sensitivity ratings. All parts are in active production status.

Frequently Asked Questions (FAQ)

Q: Can I substitute the RC2012F5491CS with any of the listed parts without circuit redesign?

A: Yes. All listed substitute parts are electrically and mechanically equivalent. They share identical resistance values (5.49 kOhms), tolerance (±1%), power rating (0.125W), temperature coefficient (±100ppm/°C), operating temperature range (-55°C to 155°C), and package format (0805). No circuit redesign is required.

Q: What is the difference between moisture-resistant and automotive AEC-Q200 rated substitutes?

A: Moisture-resistant parts (CR0805-FX-5491ELF and RC0805FR-075K49L) are designed for general industrial applications with enhanced moisture protection. Automotive AEC-Q200 rated parts (ERJ-6ENF5491V, RMCF0805FT5K49, and CRCW08055K49FKEA) meet additional automotive qualification standards and are suitable for both automotive and general industrial applications.

Q: Do the differences in seated height affect PCB assembly compatibility?

A: No. The seated height variations (ranging from 0.020" to 0.028") are within standard PCB assembly tolerances for 0805 package components and do not affect placement, soldering, or functional performance.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All listed substitute parts are ROHS3 compliant with MSL 1 (Unlimited) moisture sensitivity ratings and REACH unaffected status, matching the compliance profile of the original RC2012F5491CS.

Q: Which substitute part has the highest inventory availability?

A: RC0805FR-075K49L (YAGEO) has the highest inventory with 91,552 units in stock, followed by ERJ-6ENF5491V (Panasonic) with 65,777 units.

Q: Can I use automotive-rated parts in non-automotive applications?

A: Yes. Automotive AEC-Q200 rated parts exceed the requirements for general industrial applications and are fully compatible with non-automotive designs.

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