RCS3216F49R9CS Equivalent & Substitute Parts Reference

Part Overview

The RCS3216F49R9CS is a 49.9 Ohm ±1% 0.25W (1/4W) thick film chip resistor in 1206 (3216 Metric) package manufactured by Samsung Electro-Mechanics. This component features anti-sulfur and moisture-resistant construction with a temperature coefficient of ±100ppm/°C and operating range of -55°C to 155°C. The part is ROHS3 compliant with MSL 1 (Unlimited) rating.

Equivalent and substitute parts are necessary when the primary part becomes unavailable, when alternative sourcing is required for supply chain optimization, or when design specifications allow for functionally compatible alternatives from different manufacturers. Substitute parts must maintain identical electrical characteristics and mechanical compatibility to ensure proper circuit performance.

Key Parameters

Parameter	Value
Resistance	49.9 Ohms
Tolerance	±1%
Power Rating	0.25W (1/4W)
Package / Case	1206 (3216 Metric)
Composition	Thick Film
Temperature Coefficient	±100ppm/°C
Operating Temperature Range	-55°C to 155°C
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)
Number of Terminations	2

Substitute Part Grouping Explanation

Substitution compatibility for the RCS3216F49R9CS is determined by strict adherence to the following parameters:

Critical Parameters (Must Match Exactly):

Resistance Value: 49.9 Ohms
Tolerance: ±1%
Package / Case: 1206 (3216 Metric)
Composition: Thick Film
Temperature Coefficient: ±100ppm/°C
Operating Temperature Range: -55°C to 155°C
Number of Terminations: 2

Acceptable Variations:

Power Rating: 0.25W (1/4W) is standard; higher power ratings (0.75W) are acceptable as they provide additional margin
Manufacturer: Different manufacturers are acceptable provided all electrical and mechanical specifications are met
Packaging Format: Cut Tape (CT), Digi-Reel®, or Tape & Reel (TR) are interchangeable
Additional Features: Automotive AEC-Q200 certification or pulse withstanding capability are acceptable enhancements
Moisture Resistance: Enhanced moisture resistance features are acceptable

Non-Substitutable Variations:

Different resistance values
Tolerance greater than ±1%
Different package sizes
Power ratings below 0.25W

Parameter Comparison

Part Number	Manufacturer	Resistance	Tolerance	Power (W)	Package	Temp Coeff	Temp Range	Features	Product Status	Inventory
RCS3216F49R9CS	Samsung Electro-Mechanics	49.9 Ω	±1%	0.25	1206	±100ppm/°C	-55 to 155°C	Anti-Sulfur, Moisture Resistant	Active	994 Pcs
RC3216F49R9CS	Samsung Electro-Mechanics	49.9 Ω	±1%	0.25	1206	±100ppm/°C	-55 to 155°C	Moisture Resistant	Active	783 Pcs
AC1206FR-0749R9L	YAGEO	49.9 Ω	±1%	0.25	1206	±100ppm/°C	-55 to 155°C	Automotive AEC-Q200, Moisture Resistant	Active	14792 Pcs
CR1206-FX-49R9ELF	Bourns Inc.	49.9 Ω	±1%	0.25	1206	±100ppm/°C	-55 to 155°C	Moisture Resistant	Active	68163 Pcs
CRCW120649R9FKEA	Vishay Dale	49.9 Ω	±1%	0.25	1206	±100ppm/°C	-55 to 155°C	Automotive AEC-Q200	Active	20100 Pcs
CRCW120649R9FKEAHP	Vishay Dale	49.9 Ω	±1%	0.75	1206	±100ppm/°C	-55 to 155°C	Automotive AEC-Q200, Pulse Withstanding	Active	51037 Pcs
ERJ-8ENF49R9V	Panasonic Electronic Components	49.9 Ω	±1%	0.25	1206	±100ppm/°C	-55 to 155°C	Automotive AEC-Q200	Not For New Designs	358978 Pcs
RC1206FR-0749R9L	YAGEO	49.9 Ω	±1%	0.25	1206	±100ppm/°C	-55 to 155°C	Moisture Resistant	Active	3300 Pcs
RMCF1206FT49R9	Stackpole Electronics Inc	49.9 Ω	±1%	0.25	1206	±100ppm/°C	-55 to 155°C	Automotive AEC-Q200	Active	185185 Pcs

Engineering Selection Recommendations

Primary Substitutes (Recommended for New Designs):

CR1206-FX-49R9ELF (Bourns Inc.) - Highest inventory availability (68163 Pcs). Active product status with moisture-resistant thick film construction. Identical electrical specifications and 1206 package compatibility.
RMCF1206FT49R9 (Stackpole Electronics Inc) - Large inventory (185185 Pcs). Active product status with Automotive AEC-Q200 certification. Suitable for applications requiring automotive-grade reliability.
CRCW120649R9FKEA (Vishay Dale) - Substantial inventory (20100 Pcs). Active product status with Automotive AEC-Q200 certification and 0.25W power rating.

Secondary Substitutes (Acceptable with Verification):

AC1206FR-0749R9L (YAGEO) - High inventory (14792 Pcs). Active product status with Automotive AEC-Q200 certification. Moisture-resistant construction.
RC3216F49R9CS (Samsung Electro-Mechanics) - Same manufacturer as primary part. Active product status. Moisture-resistant thick film without anti-sulfur feature.
RC1206FR-0749R9L (YAGEO) - Lower inventory (3300 Pcs). Active product status with moisture-resistant construction.

Not Recommended for New Designs:

ERJ-8ENF49R9V (Panasonic Electronic Components) - Product status is "Not For New Designs." Although inventory is substantial (358978 Pcs), this designation indicates the manufacturer has discontinued active development and support for this part.

Higher Power Alternative:

CRCW120649R9FKEAHP (Vishay Dale) - 0.75W power rating provides additional thermal margin compared to 0.25W standard. Automotive AEC-Q200 certified with pulse withstanding capability. Suitable for applications requiring enhanced power dissipation capability.

Frequently Asked Questions (FAQ)

Q: Can I use a substitute part with a higher power rating than the original RCS3216F49R9CS?

A: Yes. The CRCW120649R9FKEAHP (0.75W) is a valid substitute. Higher power ratings provide additional thermal margin and do not compromise circuit performance. The 1206 package dimensions remain identical, ensuring mechanical compatibility.

Q: What is the difference between the RCS3216F49R9CS and RC3216F49R9CS?

A: Both are Samsung Electro-Mechanics products with identical electrical specifications (49.9 Ω, ±1%, 0.25W, 1206 package). The primary difference is that RCS3216F49R9CS includes anti-sulfur protection in addition to moisture resistance, while RC3216F49R9CS provides moisture resistance only. Both are functionally equivalent for standard applications.

Q: Why is ERJ-8ENF49R9V marked "Not For New Designs"?

A: This designation indicates that Panasonic Electronic Components has discontinued active development and support for this part number. While the part remains available in inventory and meets all electrical specifications, it should not be selected for new circuit designs. Use CR1206-FX-49R9ELF, RMCF1206FT49R9, or CRCW120649R9FKEA instead.

Q: Are Automotive AEC-Q200 certified parts suitable for non-automotive applications?

A: Yes. Automotive AEC-Q200 certification indicates enhanced reliability testing and quality standards. These parts are fully compatible with non-automotive applications and provide equivalent or superior performance compared to standard industrial-grade resistors.

Q: What packaging formats are available for these substitute parts?

A: Substitute parts are available in three packaging formats: Cut Tape (CT) & Digi-Reel®, Tape & Reel (TR), and standard tape packaging. All formats are mechanically and electrically equivalent. Selection depends on assembly equipment compatibility and procurement requirements.

Q: Can I substitute parts from different manufacturers in the same circuit?

A: Yes. All listed substitute parts meet identical electrical specifications (49.9 Ω, ±1%, 0.25W, 1206 package, ±100ppm/°C, -55°C to 155°C). Parts from Samsung Electro-Mechanics, YAGEO, Bourns Inc., Vishay Dale, Panasonic Electronic Components, and Stackpole Electronics Inc are functionally interchangeable.

Q: What is the significance of Moisture Sensitivity Level (MSL) 1?

A: MSL 1 (Unlimited) indicates that the component has no moisture sensitivity limitations. These parts do not require special moisture-controlled storage or handling procedures and can be stored under standard industrial conditions indefinitely.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All listed substitute parts are ROHS3 compliant, meeting the same environmental and regulatory requirements as the primary RCS3216F49R9CS part.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message