RC3216J512CS 5.1kΩ ±5% 1/4W 1206 Chip Resistor Equivalent & Substitute Parts

Part Overview

The RC3216J512CS is a 5.1 kOhms ±5% 0.25W thick film chip resistor in 1206 (3216 Metric) package manufactured by Samsung Electro-Mechanics. This component is classified as Active product status with 5,200 pieces currently in stock. The part is ROHS3 compliant, REACH unaffected, and features moisture resistance with MSL Level 1 (unlimited moisture sensitivity rating).

Substitute parts are necessary when the original manufacturer part becomes unavailable, when design requirements demand higher tolerance specifications, when automotive-grade certifications are required, or when alternative sourcing improves supply chain reliability and cost efficiency.

Key Parameters

Parameter	Value	Specification Range
Resistance Value	5.1 kOhms	Fixed
Tolerance	±5%	Acceptable Range
Power Rating	0.25W (1/4W)	Fixed
Package Type	1206 (3216 Metric)	Fixed
Composition	Thick Film	Fixed
Temperature Coefficient	±100ppm/°C	Fixed
Operating Temperature Range	-55°C to +155°C	Fixed
Moisture Resistance	Yes	Required
RoHS Compliance	ROHS3 Compliant	Required
MSL Rating	Level 1 (Unlimited)	Fixed

Substitute Part Grouping Explanation

Substitution logic for the RC3216J512CS is determined by strict adherence to the following electrical and mechanical parameters:

Core Substitution Criteria (Non-Negotiable):

Resistance value: 5.1 kOhms (exact match required)
Power rating: 0.25W (1/4W) (exact match required)
Package: 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 compliance: ROHS3 Compliant (exact match required)
MSL rating: Level 1 (exact match required)

Tolerance Substitution Hierarchy:

Direct substitutes: ±5% tolerance (same as main part)
Upgrade substitutes: ±1% tolerance (tighter tolerance, higher precision, backward compatible)

Feature Enhancement Criteria:

Automotive AEC-Q200 certification (optional enhancement, does not disqualify non-automotive parts)
High voltage capability (optional enhancement)
Moisture resistance (required feature, present in all substitutes)

All substitute parts listed maintain identical electrical performance within their specified tolerance bands and are mechanically compatible with the original part footprint and mounting requirements.

Parameter Comparison

Manufacturer Part Number	Manufacturer	Resistance	Tolerance	Power (W)	Package	Temp Coeff	Op Temp Range	Composition	RoHS	MSL	Product Status	Inventory
RC3216J512CS	Samsung Electro-Mechanics	5.1 kΩ	±5%	0.25	1206	±100ppm/°C	-55 to +155°C	Thick Film	ROHS3	1	Active	5,200
RC3216F512CS	Samsung Electro-Mechanics	5.1 kΩ	±1%	0.25	1206	±100ppm/°C	-55 to +155°C	Thick Film	ROHS3	1	Active	752
RC1206JR-075K1L	YAGEO	5.1 kΩ	±5%	0.25	1206	±100ppm/°C	-55 to +155°C	Thick Film	ROHS3	1	Active	87,423
AC1206FR-075K1L	YAGEO	5.1 kΩ	±1%	0.25	1206	±100ppm/°C	-55 to +155°C	Thick Film	ROHS3	1	Active	18,331
CR1206-FX-5101ELF	Bourns Inc.	5.1 kΩ	±1%	0.25	1206	±100ppm/°C	-55 to +155°C	Thick Film	ROHS3	1	Active	39,621
ERJ-8ENF5101V	Panasonic Electronic Components	5.1 kΩ	±1%	0.25	1206	±100ppm/°C	-55 to +155°C	Thick Film	ROHS3	1	Not For New Designs	55,364
KTR18EZPF5101	Rohm Semiconductor	5.1 kΩ	±1%	0.25	1206	±100ppm/°C	-55 to +155°C	Thick Film	ROHS3	1	Active	13,747
RC1206FR-075K1L	YAGEO	5.1 kΩ	±1%	0.25	1206	±100ppm/°C	-55 to +155°C	Thick Film	ROHS3	1	Active	82,409
RMCF1206FT5K10	Stackpole Electronics Inc	5.1 kΩ	±1%	0.25	1206	±100ppm/°C	-55 to +155°C	Thick Film	ROHS3	1	Active	117,360
AC1206JR-075K1L	YAGEO	5.1 kΩ	±5%	0.25	1206	±100ppm/°C	-55 to +155°C	Thick Film	ROHS3	1	Active	11,303
CRCW12065K10FKEA	Vishay Dale	5.1 kΩ	±1%	0.25	1206	±100ppm/°C	-55 to +155°C	Thick Film	ROHS3	1	Active	20,100

Engineering Selection Recommendations

Direct Substitutes (Same Tolerance ±5%):

RC1206JR-075K1L (YAGEO) and AC1206JR-075K1L (YAGEO) are direct functional equivalents with identical electrical specifications. RC1206JR-075K1L is recommended for general applications requiring standard tolerance. AC1206JR-075K1L includes automotive AEC-Q200 certification and is suitable for automotive and industrial applications where enhanced reliability standards apply.

Upgrade Substitutes (Tighter Tolerance ±1%):

RC3216F512CS (Samsung Electro-Mechanics), RC1206FR-075K1L (YAGEO), AC1206FR-075K1L (YAGEO), CR1206-FX-5101ELF (Bourns Inc.), KTR18EZPF5101 (Rohm Semiconductor), RMCF1206FT5K10 (Stackpole Electronics Inc.), and CRCW12065K10FKEA (Vishay Dale) all provide ±1% tolerance, delivering superior precision compared to the original ±5% specification. These parts are electrically and mechanically compatible and provide enhanced accuracy for precision circuit applications.

Product Status Consideration:

ERJ-8ENF5101V (Panasonic Electronic Components) carries "Not For New Designs" status. This part remains functionally equivalent but should not be selected for new product development. Existing designs using this part may continue with this component for maintenance and repair purposes.

Automotive Applications:

AC1206FR-075K1L, AC1206JR-075K1L, KTR18EZPF5101, RMCF1206FT5K10, and CRCW12065K10FKEA include AEC-Q200 automotive qualification. These parts are suitable for automotive, industrial, and mission-critical applications requiring enhanced reliability documentation and traceability.

Supply Chain Optimization:

RMCF1206FT5K10 (Stackpole Electronics Inc.) offers the highest inventory availability at 117,360 pieces, followed by RC1206JR-075K1L (YAGEO) at 87,423 pieces. RC1206FR-075K1L (YAGEO) provides 82,409 pieces with ±1% tolerance. These options support extended production runs and reduce supply chain risk.

Frequently Asked Questions (FAQ)

Q: Can I substitute RC3216J512CS with a ±1% tolerance part?

A: Yes. All ±1% tolerance substitutes (RC3216F512CS, RC1206FR-075K1L, AC1206FR-075K1L, CR1206-FX-5101ELF, KTR18EZPF5101, RMCF1206FT5K10, CRCW12065K10FKEA) are electrically and mechanically compatible. The tighter tolerance provides superior precision and is backward compatible with designs specified for ±5% tolerance.

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 mounting and PCB layout compatibility is maintained across all substitutes.

Q: Which substitute part should I use for automotive applications?

A: AC1206FR-075K1L, AC1206JR-075K1L, KTR18EZPF5101, RMCF1206FT5K10, and CRCW12065K10FKEA all carry AEC-Q200 automotive qualification. AC1206FR-075K1L combines automotive certification with ±1% tolerance. RMCF1206FT5K10 offers the highest inventory availability among automotive-qualified options.

Q: What is the difference between RC3216J512CS and RC3216F512CS?

A: Both parts are manufactured by Samsung Electro-Mechanics in the same 1206 package with identical electrical characteristics. The primary difference is tolerance: RC3216J512CS specifies ±5%, while RC3216F512CS specifies ±1%. RC3216F512CS provides superior precision for applications requiring tighter resistance values.

Q: Can I use ERJ-8ENF5101V in new product designs?

A: ERJ-8ENF5101V carries "Not For New Designs" product status. This designation indicates the manufacturer recommends against using this part in new development. For new designs, select from parts with "Active" status: RC1206JR-075K1L, AC1206FR-075K1L, CR1206-FX-5101ELF, KTR18EZPF5101, RC1206FR-075K1L, RMCF1206FT5K10, AC1206JR-075K1L, or CRCW12065K10FKEA.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All listed substitute parts are ROHS3 compliant with MSL Level 1 (unlimited moisture sensitivity rating). All parts are REACH unaffected and carry identical environmental compliance certifications as the original RC3216J512CS.

Q: What is the temperature coefficient specification, and does it vary among substitutes?

A: All substitute parts maintain ±100ppm/°C temperature coefficient with operating temperature range of -55°C to +155°C. This specification is identical across all listed alternatives and ensures consistent thermal performance in circuit applications.

Q: Which substitute offers the best supply availability?

A: RMCF1206FT5K10 (Stackpole Electronics Inc.) provides the highest inventory at 117,360 pieces. RC1206JR-075K1L (YAGEO) offers 87,423 pieces, and RC1206FR-075K1L (YAGEO) provides 82,409 pieces. These three options support high-volume production requirements.

Q: Can I mix different substitute parts in the same production batch?

A: Yes. All substitute parts meet identical electrical specifications within their respective tolerance bands (±5% or ±1%), operate across the same temperature range, and use the same 1206 package. Mixing parts from different manufacturers is electrically and mechanically compatible. However, for consistency and traceability, single-source procurement is recommended for production batches.

Q: What is the difference between moisture-resistant and non-moisture-resistant thick film resistors?

A: All listed parts, including the original RC3216J512CS, feature moisture-resistant thick film construction. This provides enhanced protection against humidity and environmental degradation. All substitute parts maintain this moisture-resistant specification with MSL Level 1 rating, indicating unlimited shelf life under standard storage conditions.

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