RC3216J304CS 300kΩ 1206 Chip Resistor Equivalent & Substitute Parts

Part Overview

The RC3216J304CS is a 300 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 moisture-resistant construction and ROHS3 compliance. Equivalent and substitute parts are identified based on matching electrical specifications (resistance value, tolerance, power rating) and mechanical compatibility (package size, termination count, operating temperature range). Direct equivalents maintain identical tolerance and power ratings, while upgrade substitutes offer improved tolerance (±1%) or enhanced features such as automotive AEC-Q200 qualification.

Key Parameters

Parameter	Value	Specification Basis
Resistance	300 kOhms	Core electrical specification
Tolerance	±5%	Accuracy classification for direct equivalents
Power Rating	0.25W (1/4W)	Thermal dissipation capacity
Package / Case	1206 (3216 Metric)	Physical form factor and PCB footprint
Composition	Thick Film	Manufacturing technology
Operating Temperature	-55°C ~ 155°C	Environmental operating range
Terminations	2	Connection points
RoHS Status	ROHS3 Compliant	Environmental compliance
Moisture Sensitivity Level	1 (Unlimited)	Handling and storage requirements

Substitute Part Grouping Explanation

Substitution logic is based on three primary criteria:

Electrical Compatibility: Resistance value (300 kOhms), power dissipation capacity (0.25W minimum), and operating temperature range (-55°C ~ 155°C) must be maintained or exceeded. Tolerance can be equal (±5%) or tighter (±1%).

Mechanical Compatibility: Package designation (1206 / 3216 Metric), number of terminations (2), and physical dimensions must support direct PCB placement without redesign. Height variation within 0.026" to 0.030" seated maximum is acceptable for standard assembly processes.

Regulatory Compliance: All substitutes maintain ROHS3 compliance, MSL Level 1 (Unlimited), and EAR99 export classification. Automotive-grade parts (AEC-Q200) are identified as upgrades but remain functionally compatible.

Substitution Categories:

Direct Equivalent (±5% Tolerance): RC1206JR-07300KL (YAGEO) maintains identical tolerance and power rating.
Upgrade Substitutes (±1% Tolerance): AC1206FR-07300KL, CR1206-FX-3003ELF, ERJ-8ENF3003V, KTR18EZPF3003, MCR18ERTF3003, RC1206FR-07300KL, RMCF1206FT300K provide improved accuracy with automotive or high-voltage features.
Similar Parts (Higher Power Rating): CRCW1206300KFKEAHP offers 0.75W (3/4W) capacity in identical package for applications requiring higher thermal margin.

Parameter Comparison

Manufacturer Part Number	Manufacturer	Resistance	Tolerance	Power (W)	Package	Temp Coeff	Op. Temp Range	Features	Product Status
RC3216J304CS	Samsung Electro-Mechanics	300 kΩ	±5%	0.25W	1206	±100ppm/°C	-55°C ~ 155°C	Moisture Resistant	Active
RC1206JR-07300KL	YAGEO	300 kΩ	±5%	0.25W	1206	±100ppm/°C	-55°C ~ 155°C	Moisture Resistant	Active
AC1206FR-07300KL	YAGEO	300 kΩ	±1%	0.25W	1206	±100ppm/°C	-55°C ~ 155°C	Automotive AEC-Q200, Moisture Resistant	Active
CR1206-FX-3003ELF	Bourns Inc.	300 kΩ	±1%	0.25W	1206	±100ppm/°C	-55°C ~ 155°C	Moisture Resistant	Active
ERJ-8ENF3003V	Panasonic Electronic Components	300 kΩ	±1%	0.25W	1206	±100ppm/°C	-55°C ~ 155°C	Automotive AEC-Q200	Not For New Designs
KTR18EZPF3003	Rohm Semiconductor	300 kΩ	±1%	0.25W	1206	±100ppm/°C	-55°C ~ 155°C	Automotive AEC-Q200, High Voltage	Active
MCR18ERTF3003	Rohm Semiconductor	300 kΩ	±1%	0.25W	1206	±100ppm/°C	-55°C ~ 155°C	—	Discontinued at DiGi Electronics
RC1206FR-07300KL	YAGEO	300 kΩ	±1%	0.25W	1206	±100ppm/°C	-55°C ~ 155°C	Moisture Resistant	Active
RMCF1206FT300K	Stackpole Electronics Inc	300 kΩ	±1%	0.25W	1206	±100ppm/°C	-55°C ~ 155°C	Automotive AEC-Q200	Active
CRCW1206300KFKEA	Vishay Dale	300 kΩ	±1%	0.25W	1206	±100ppm/°C	-55°C ~ 155°C	Automotive AEC-Q200	Active
CRCW1206300KFKEAHP	Vishay Dale	300 kΩ	±1%	0.75W	1206	±100ppm/°C	-55°C ~ 155°C	Automotive AEC-Q200, Pulse Withstanding	Active

Engineering Selection Recommendations

For Direct Replacement (Identical Specifications):

RC1206JR-07300KL (YAGEO) is the primary direct equivalent, maintaining ±5% tolerance and 0.25W power rating. This part is suitable for applications where the original tolerance specification is a design requirement and no performance upgrade is needed.

For Tolerance Upgrade (±1% Accuracy):

When circuit design permits tighter tolerance, the following active-status parts are recommended:

RC1206FR-07300KL (YAGEO): Moisture-resistant thick film, maintains original feature set with improved accuracy.
CR1206-FX-3003ELF (Bourns Inc.): Moisture-resistant, established reliability in industrial applications.
CRCW1206300KFKEA (Vishay Dale): Automotive AEC-Q200 qualified, suitable for automotive and high-reliability applications.
RMCF1206FT300K (Stackpole Electronics Inc.): Automotive AEC-Q200 qualified, active product status with established supply chain.

For Automotive Applications:

AC1206FR-07300KL, KTR18EZPF3003, RMCF1206FT300K, and CRCW1206300KFKEA all carry AEC-Q200 automotive qualification. KTR18EZPF3003 includes high-voltage capability for specialized automotive circuits.

For Higher Thermal Margin:

CRCW1206300KFKEAHP provides 0.75W (3/4W) power rating in identical 1206 package with pulse-withstanding capability. This part is suitable for applications with higher power dissipation requirements or stringent reliability margins.

Parts to Avoid for New Designs:

ERJ-8ENF3003V (Panasonic) is marked "Not For New Designs" and MCR18ERTF3003 (Rohm) is discontinued at DiGi Electronics. These parts should not be selected for new product development.

Frequently Asked Questions (FAQ)

Q: Can RC1206JR-07300KL directly replace RC3216J304CS without circuit redesign?

A: Yes. RC1206JR-07300KL maintains identical electrical specifications (300 kΩ ±5%, 0.25W) and mechanical compatibility (1206 package, 2 terminations, -55°C ~ 155°C operating range). No circuit redesign is required.

Q: What is the difference between ±5% and ±1% tolerance parts?

A: Tolerance defines the maximum deviation from the nominal resistance value. ±5% tolerance allows ±15 kΩ deviation from 300 kΩ (range: 285–315 kΩ). ±1% tolerance allows ±3 kΩ deviation (range: 297–303 kΩ). Tighter tolerance (±1%) is required in precision circuits such as analog filters, reference networks, or measurement instrumentation. Standard applications typically accept ±5% tolerance.

Q: Are automotive AEC-Q200 parts compatible with non-automotive applications?

A: Yes. AEC-Q200 qualification indicates enhanced reliability testing and stricter manufacturing controls. These parts exceed standard industrial specifications and are fully compatible with non-automotive applications. No design changes are required.

Q: What does "Moisture Resistant" mean for thick film resistors?

A: Moisture-resistant construction uses protective coatings and materials to reduce moisture absorption and prevent performance degradation in humid environments. This feature is beneficial for applications exposed to high humidity, condensation, or outdoor conditions. All listed substitutes maintain moisture resistance or equivalent environmental protection.

Q: Can CRCW1206300KFKEAHP (0.75W) replace the 0.25W original part?

A: Yes, from a thermal perspective. The 0.75W part has higher power dissipation capacity and will operate cooler in the same circuit. However, physical dimensions differ slightly (height 0.024" vs. 0.026" seated maximum). Verify PCB assembly clearance before substitution. This part is suitable for applications requiring higher thermal margin or pulse withstanding capability.

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

A: MSL (Moisture Sensitivity Level) 1 indicates the component requires no special moisture control during storage or handling. Parts can be stored at room temperature and humidity without desiccant packaging or baking requirements. This simplifies inventory management and reduces handling costs compared to higher MSL levels.

Q: Are all listed parts ROHS3 compliant?

A: Yes. All substitute parts listed maintain ROHS3 compliance, confirming absence of restricted substances (lead, cadmium, hexavalent chromium, etc.). This compliance is mandatory for applications subject to EU RoHS Directive or equivalent environmental regulations.

Q: What packaging options are available for these parts?

A: The main part (RC3216J304CS) is supplied in standard packaging. Substitute parts are available in Tape & Reel (TR) for automated assembly or Cut Tape (CT) for manual assembly. Verify packaging format compatibility with your assembly process before procurement.

Q: Is temperature coefficient (±100ppm/°C) critical for substitution?

A: Temperature coefficient defines resistance change per degree Celsius. All listed parts maintain identical ±100ppm/°C specification, ensuring consistent thermal behavior across the -55°C ~ 155°C operating range. This parameter is matched across all substitutes and does not differentiate selection.

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