RCS3216J512CS Equivalent & Substitute Parts Reference

Part Overview

The RCS3216J512CS is a 5.1 kOhms ±5% 0.25W 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 rating and is currently in active production status with 846 pieces in stock.

Equivalent and substitute parts are necessary when the primary part becomes unavailable, when design requirements demand higher tolerance specifications, when automotive-grade certifications are required, or when enhanced power ratings are needed for circuit optimization.

Key Parameters

Parameter	Value	Specification Type
Resistance Value	5.1 kOhms	Core Electrical
Tolerance	±5%	Core Electrical
Power Rating	0.25W (1/4W)	Core Electrical
Package / Case	1206 (3216 Metric)	Mechanical
Composition	Thick Film	Construction
Temperature Coefficient	±100ppm/°C	Performance
Operating Temperature Range	-55°C to 155°C	Performance
RoHS Status	ROHS3 Compliant	Compliance
Moisture Sensitivity Level	1 (Unlimited)	Environmental

Substitute Part Grouping Explanation

Substitution of the RCS3216J512CS is determined by strict adherence to the following electrical and mechanical parameters:

Primary Substitution Criteria:

Resistance value: 5.1 kOhms (exact match required)
Package / Case: 1206 (3216 Metric) (exact match required)
Composition: Thick Film (exact match required)
Temperature Coefficient: ±100ppm/°C (exact match required)
Operating Temperature Range: -55°C to 155°C (exact match required)
RoHS Status: ROHS3 Compliant (exact match required)
Moisture Sensitivity Level: 1 (Unlimited) (exact match required)

Secondary Substitution Parameters (Allowable Variations):

Tolerance: Can be equal or tighter (±5%, ±1%, ±0.5% acceptable)
Power Rating: Can be equal or higher (0.25W, 0.5W, 0.75W acceptable)
Manufacturer: Different manufacturers acceptable if all primary criteria met
Packaging Format: Cut Tape (CT), Digi-Reel®, or Tape & Reel (TR) acceptable
Additional Features: Anti-sulfur, moisture-resistant, automotive AEC-Q200, pulse withstanding acceptable as enhancements

All substitute parts listed meet these criteria and are direct functional equivalents for the RCS3216J512CS in standard applications.

Parameter Comparison

Part Number	Manufacturer	Resistance	Tolerance	Power (W)	Package	Temp Coeff	Op. Temp Range	Features	Certifications	Status
RCS3216J512CS	Samsung Electro-Mechanics	5.1 kΩ	±5%	0.25	1206	±100ppm/°C	-55 to 155°C	Anti-Sulfur, Moisture Resistant	ROHS3, MSL 1	Active
RC3216F512CS	Samsung Electro-Mechanics	5.1 kΩ	±1%	0.25	1206	±100ppm/°C	-55 to 155°C	Moisture Resistant	ROHS3, MSL 1	Active
AC1206FR-075K1L	YAGEO	5.1 kΩ	±1%	0.25	1206	±100ppm/°C	-55 to 155°C	Automotive AEC-Q200, Moisture Resistant	ROHS3, MSL 1	Active
AC1206JR-075K1L	YAGEO	5.1 kΩ	±5%	0.25	1206	±100ppm/°C	-55 to 155°C	Automotive AEC-Q200, Moisture Resistant	ROHS3, MSL 1	Active
CR1206-FX-5101ELF	Bourns Inc.	5.1 kΩ	±1%	0.25	1206	±100ppm/°C	-55 to 155°C	Moisture Resistant	ROHS3, MSL 1	Active
CRCW12065K10FKEA	Vishay Dale	5.1 kΩ	±1%	0.25	1206	±100ppm/°C	-55 to 155°C	Automotive AEC-Q200	ROHS3, MSL 1	Active
CRCW12065K10FKEAHP	Vishay Dale	5.1 kΩ	±1%	0.75	1206	±100ppm/°C	-55 to 155°C	Automotive AEC-Q200, Pulse Withstanding	ROHS3, MSL 1	Active
ERJ-8ENF5101V	Panasonic Electronic Components	5.1 kΩ	±1%	0.25	1206	±100ppm/°C	-55 to 155°C	Automotive AEC-Q200	ROHS3, MSL 1	Not For New Designs
ESR18EZPD5101	Rohm Semiconductor	5.1 kΩ	±0.5%	0.5	1206	±100ppm/°C	-55 to 155°C	Automotive AEC-Q200, Pulse Withstanding	ROHS3, MSL 1	Active
KTR18EZPF5101	Rohm Semiconductor	5.1 kΩ	±1%	0.25	1206	±100ppm/°C	-55 to 155°C	Automotive AEC-Q200, High Voltage	ROHS3, MSL 1	Active
RC1206FR-075K1L	YAGEO	5.1 kΩ	±1%	0.25	1206	±100ppm/°C	-55 to 155°C	Moisture Resistant	ROHS3, MSL 1	Active

Engineering Selection Recommendations

For Direct Replacement (Identical Specifications): AC1206JR-075K1L (YAGEO) provides direct replacement with matching ±5% tolerance and 0.25W power rating. This part maintains identical electrical performance while offering automotive AEC-Q200 certification and moisture-resistant construction.

For Improved Tolerance Requirements: RC3216F512CS (Samsung Electro-Mechanics), CR1206-FX-5101ELF (Bourns Inc.), AC1206FR-075K1L (YAGEO), CRCW12065K10FKEA (Vishay Dale), KTR18EZPF5101 (Rohm Semiconductor), and RC1206FR-075K1L (YAGEO) all provide ±1% tolerance while maintaining 0.25W power rating and 1206 package. These parts are suitable when circuit design requires tighter tolerance specifications.

For Enhanced Power Handling: CRCW12065K10FKEAHP (Vishay Dale) provides 0.75W power rating with ±1% tolerance and automotive AEC-Q200 certification. ESR18EZPD5101 (Rohm Semiconductor) provides 0.5W power rating with ±0.5% tolerance and pulse withstanding capability. These parts accommodate applications requiring higher power dissipation or enhanced reliability margins.

For Automotive Applications: AC1206FR-075K1L, AC1206JR-075K1L, CRCW12065K10FKEA, CRCW12065K10FKEAHP, ERJ-8ENF5101V, ESR18EZPD5101, and KTR18EZPF5101 all carry AEC-Q200 automotive certification. These parts are required for automotive-grade circuit designs.

For New Designs: Avoid ERJ-8ENF5101V (Panasonic Electronic Components), which carries "Not For New Designs" status. All other listed parts are in active production and suitable for new design implementations.

For Standard Industrial Applications: RC3216F512CS, CR1206-FX-5101ELF, RC1206FR-075K1L, and AC1206FR-075K1L provide suitable alternatives without automotive certification requirements, offering cost optimization for non-automotive applications.

Frequently Asked Questions (FAQ)

Q: Can I substitute RCS3216J512CS with a part having ±1% tolerance instead of ±5%?

A: Yes. Tighter tolerance specifications are acceptable substitutions. Parts with ±1% tolerance (RC3216F512CS, CR1206-FX-5101ELF, AC1206FR-075K1L, CRCW12065K10FKEA, KTR18EZPF5101, RC1206FR-075K1L) provide improved accuracy while maintaining all other electrical and mechanical parameters. Circuit performance will be enhanced or remain unchanged.

Q: Are all substitute parts in the same 1206 package?

A: Yes. All listed substitute parts use the 1206 (3216 Metric) package with identical footprint dimensions (0.126" L x 0.063" W or 3.20mm x 1.60mm). Physical board layout compatibility is maintained across all substitutes.

Q: Can I use CRCW12065K10FKEAHP (0.75W) as a direct replacement for RCS3216J512CS (0.25W)?

A: Yes. Higher power ratings are acceptable substitutions. CRCW12065K10FKEAHP provides 0.75W capability, which exceeds the 0.25W requirement. This part is suitable for applications where the original 0.25W rating is adequate, and the higher rating provides additional thermal margin. Physical dimensions remain compatible.

Q: What is the difference between Cut Tape (CT) & Digi-Reel® and Tape & Reel (TR) packaging?

A: Both packaging formats contain identical components in 1206 package. Cut Tape (CT) & Digi-Reel® is supplied in cut tape format suitable for manual or small-scale assembly. Tape & Reel (TR) is supplied on continuous reel format optimized for automated pick-and-place assembly. Component electrical and mechanical specifications are identical; packaging format selection depends on assembly process requirements.

Q: Which substitute parts have automotive AEC-Q200 certification?

A: AC1206FR-075K1L, AC1206JR-075K1L, CRCW12065K10FKEA, CRCW12065K10FKEAHP, ERJ-8ENF5101V, ESR18EZPD5101, and KTR18EZPF5101 all carry AEC-Q200 automotive certification. These parts are required for automotive applications and recommended for applications requiring enhanced reliability qualification.

Q: Is ESR18EZPD5101 suitable for my application if I only need 0.25W?

A: Yes. ESR18EZPD5101 provides 0.5W power rating, which exceeds the 0.25W requirement. The higher power rating does not negatively impact applications requiring lower power dissipation. Additionally, this part offers ±0.5% tolerance (tighter than the original ±5%) and pulse withstanding capability, providing enhanced performance margins.

Q: Why should I avoid ERJ-8ENF5101V for new designs?

A: ERJ-8ENF5101V carries "Not For New Designs" product status from Panasonic Electronic Components. This designation indicates the manufacturer is phasing out this part number. For new design implementations, select from parts with "Active" status: RC3216F512CS, AC1206FR-075K1L, AC1206JR-075K1L, CR1206-FX-5101ELF, CRCW12065K10FKEA, CRCW12065K10FKEAHP, ESR18EZPD5101, KTR18EZPF5101, or RC1206FR-075K1L.

Q: Do all substitute parts meet ROHS3 compliance and MSL 1 rating?

A: Yes. All listed substitute parts are ROHS3 compliant and carry MSL 1 (Unlimited) moisture sensitivity level rating, matching the original RCS3216J512CS specifications. Environmental and regulatory compliance is maintained across all substitutes.

Q: What is the temperature coefficient specification, and why is it important?

A: Temperature coefficient of ±100ppm/°C indicates the resistance value changes by 100 parts per million for each degree Celsius change in operating temperature. All listed parts maintain this specification, ensuring consistent performance across the -55°C to 155°C operating range. This parameter is critical for precision analog circuits and temperature-sensitive applications.

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