RC3216F3321CS Equivalent & Substitute Parts

Part Overview

The RC3216F3321CS is a 3.32 kOhms ±1% 0.25W thick film chip resistor manufactured by Samsung Electro-Mechanics in the 1206 (3216 Metric) package. This moisture-resistant component operates across -55°C to 155°C and is ROHS3 compliant with MSL 1 rating. The part is currently active in production with 1119 units in stock.

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

Key Parameters

Parameter	Value	Criticality for Substitution
Resistance Value	3.32 kOhms	Critical - Must be identical
Tolerance	±1%	Critical - Must be identical or tighter
Power Rating	0.25W (1/4W)	Critical - Must be equal or greater
Package Type	1206 (3216 Metric)	Critical - Must be identical for PCB compatibility
Composition	Thick Film	Important - Affects performance characteristics
Temperature Coefficient	±100ppm/°C	Important - Affects stability across temperature range
Operating Temperature Range	-55°C to 155°C	Critical - Must support full range
RoHS Compliance	ROHS3 Compliant	Important - Regulatory requirement
Moisture Sensitivity Level	MSL 1 (Unlimited)	Important - Affects handling and storage

Substitute Part Grouping Explanation

Substitution logic for the RC3216F3321CS is based on strict electrical and mechanical parameter matching. All substitute parts must meet the following criteria:

Mandatory Matching Parameters:

Resistance value: 3.32 kOhms (exact match required)
Tolerance: ±1% (equal or tighter tolerance acceptable)
Power rating: 0.25W minimum (equal or greater acceptable)
Package: 1206 (3216 Metric) form factor
Temperature coefficient: ±100ppm/°C
Operating temperature range: -55°C to 155°C minimum
Composition: Thick film construction
Number of terminations: 2

Compliance Parameters:

RoHS3 compliance required for new designs
MSL 1 rating for unlimited moisture sensitivity
REACH unaffected status preferred

Substitute parts are grouped into two categories: Direct Equivalents (functionally identical with no additional features) and Similar Parts (functionally compatible with enhanced features such as automotive AEC-Q200 qualification or higher power ratings). Parts with different power ratings or specialized certifications are listed separately to allow informed selection based on application requirements.

Parameter Comparison

Manufacturer Part Number	Manufacturer	Resistance	Tolerance	Power (W)	Package	Temp Coeff	Op Temp Range	Features	RoHS Status	Product Status
RC3216F3321CS	Samsung Electro-Mechanics	3.32 kΩ	±1%	0.25	1206	±100ppm/°C	-55 to 155°C	Moisture Resistant	ROHS3	Active
CR1206-FX-3321ELF	Bourns Inc.	3.32 kΩ	±1%	0.25	1206	±100ppm/°C	-55 to 155°C	Moisture Resistant	ROHS3	Active
ERJ-8ENF3321V	Panasonic Electronic Components	3.32 kΩ	±1%	0.25	1206	±100ppm/°C	-55 to 155°C	Automotive AEC-Q200	ROHS3	Not For New Designs
RC1206FR-073K32L	YAGEO	3.32 kΩ	±1%	0.25	1206	±100ppm/°C	-55 to 155°C	Moisture Resistant	ROHS3	Active
RMCF1206FT3K32	Stackpole Electronics Inc	3.32 kΩ	±1%	0.25	1206	±100ppm/°C	-55 to 155°C	Automotive AEC-Q200	ROHS3	Active
AC1206FR-073K32L	YAGEO	3.32 kΩ	±1%	0.25	1206	±100ppm/°C	-55 to 155°C	Automotive AEC-Q200, Moisture Resistant	ROHS3	Active
CRCW12063K32FKEA	Vishay Dale	3.32 kΩ	±1%	0.25	1206	±100ppm/°C	-55 to 155°C	Automotive AEC-Q200	ROHS3	Active
CRCW12063K32FKEAHP	Vishay Dale	3.32 kΩ	±1%	0.75	1206	±100ppm/°C	-55 to 155°C	Automotive AEC-Q200, Pulse Withstanding	ROHS3	Active
CRCW12063K32FKEB	Vishay Dale	3.32 kΩ	±1%	0.25	1206	±100ppm/°C	-55 to 155°C	Automotive AEC-Q200	ROHS3	Discontinued
CRCW12063K32FKTA	Vishay Dale	3.32 kΩ	±1%	0.25	1206	±100ppm/°C	-55 to 155°C	Automotive AEC-Q200	RoHS Non-compliant	Active
KTR18EZPF3321	Rohm Semiconductor	3.32 kΩ	±1%	0.25	1206	±100ppm/°C	-55 to 155°C	Automotive AEC-Q200, High Voltage	ROHS3	Active

Engineering Selection Recommendations

Direct Equivalents (Preferred for Standard Applications):

CR1206-FX-3321ELF (Bourns Inc.) and RC1206FR-073K32L (YAGEO) are direct functional equivalents to the RC3216F3321CS. Both parts maintain identical electrical specifications, package dimensions, and ROHS3 compliance. These parts are suitable for direct substitution in applications where moisture resistance is the primary environmental requirement and automotive qualification is not mandated.

Automotive-Qualified Alternatives (For Automotive and High-Reliability Applications):

RMCF1206FT3K32 (Stackpole Electronics Inc.), AC1206FR-073K32L (YAGEO), CRCW12063K32FKEA (Vishay Dale), and KTR18EZPF3321 (Rohm Semiconductor) are AEC-Q200 qualified alternatives. These parts are suitable for automotive applications and high-reliability circuits where enhanced qualification standards are required. All maintain ROHS3 compliance and identical electrical characteristics to the primary part.

Enhanced Power Rating Option:

CRCW12063K32FKEAHP (Vishay Dale) provides 0.75W power rating with pulse withstanding capability in the same 1206 package. This part is suitable for applications requiring higher power dissipation or pulse tolerance while maintaining all other electrical specifications.

Parts to Avoid:

ERJ-8ENF3321V (Panasonic) is marked "Not For New Designs" and should not be selected for new circuit development. CRCW12063K32FKTA (Vishay Dale) is RoHS non-compliant and REACH affected, making it unsuitable for applications requiring regulatory compliance. CRCW12063K32FKEB (Vishay Dale) is discontinued at DiGi Electronics and should not be considered for new designs.

Frequently Asked Questions (FAQ)

Q: Can I substitute the RC3216F3321CS with any 3.32 kOhm resistor in a 1206 package?

A: No. The substitute must match all critical parameters: 3.32 kOhms resistance, ±1% tolerance, 0.25W minimum power rating, 1206 package, ±100ppm/°C temperature coefficient, and -55°C to 155°C operating range. Additionally, ROHS3 compliance and MSL 1 rating are required for regulatory conformance.

Q: What is the difference between the standard RC3216F3321CS and the AEC-Q200 qualified alternatives?

A: The primary part is a general-purpose thick film resistor with moisture resistance. AEC-Q200 qualified alternatives (RMCF1206FT3K32, AC1206FR-073K32L, CRCW12063K32FKEA, KTR18EZPF3321) undergo additional automotive qualification testing and are suitable for automotive and high-reliability applications. All maintain identical electrical specifications and package compatibility.

Q: Can I use CRCW12063K32FKEAHP (0.75W) as a substitute for the 0.25W RC3216F3321CS?

A: Yes. The 0.75W part is electrically and mechanically compatible and can be used as a direct substitute. The higher power rating provides additional thermal margin and pulse withstanding capability. Physical dimensions remain within the 1206 package specification, ensuring PCB compatibility.

Q: Why is ERJ-8ENF3321V marked "Not For New Designs"?

A: Parts marked "Not For New Designs" are typically in end-of-life status or transitioning to obsolescence. While the part may still be available in inventory, manufacturers recommend using active alternatives for new circuit development to ensure long-term supply availability and support.

Q: What is the significance of MSL 1 rating?

A: MSL (Moisture Sensitivity Level) 1 indicates unlimited moisture sensitivity, meaning the component does not require special moisture control during storage, handling, or assembly. This simplifies logistics and manufacturing processes compared to higher MSL ratings that require controlled humidity environments.

Q: Are there dimensional differences between substitute parts that might affect PCB layout?

A: While all parts conform to the 1206 package specification, minor dimensional variations exist. The RC3216F3321CS has a maximum seated height of 0.026" (0.65mm), while some alternatives range from 0.024" to 0.030". These variations are within standard PCB design tolerances and do not require layout modifications.

Q: Which substitute offers the best supply availability?

A: Based on inventory data, RC1206FR-073K32L (YAGEO) with 73,477 units and ERJ-8ENF3321V (Panasonic) with 72,430 units offer the highest stock levels. However, ERJ-8ENF3321V is marked "Not For New Designs," making RC1206FR-073K32L the preferred choice for new applications requiring maximum supply assurance.

Q: Can I use KTR18EZPF3321 in non-automotive applications?

A: Yes. KTR18EZPF3321 is AEC-Q200 qualified and includes high voltage capability, making it suitable for both automotive and general-purpose applications. The additional qualifications do not restrict its use in standard circuits and provide enhanced reliability margins.

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