RC3216J301CS 300 Ohm 1/4W 1206 Chip Resistor Equivalent & Substitute Parts

Part Overview

The RC3216J301CS is a 300 Ohm ±5% thick film chip resistor manufactured by Samsung Electro-Mechanics in 1206 (3216 Metric) package format with 0.25W power rating. This component is classified as Active product status with ROHS3 compliance and unlimited moisture sensitivity level (MSL 1). The part is suitable for general-purpose applications requiring standard tolerance resistive elements in compact surface-mount form factors.

Equivalent and substitute parts are identified based on matching electrical specifications (resistance value, tolerance, power rating, temperature coefficient, operating temperature range) and mechanical compatibility (package type, dimensions, termination count). Substitute parts are categorized as direct equivalents (matching all primary parameters), upgrades (enhanced tolerance or automotive qualification), or similar alternatives (matching tolerance class with different certifications).

Key Parameters

Parameter	Value	Unit
Resistance	300	Ohms
Tolerance	±5%	-
Power Rating	0.25	W (1/4W)
Package / Case	1206 (3216 Metric)	-
Composition	Thick Film	-
Temperature Coefficient	±100	ppm/°C
Operating Temperature Range	-55 to 155	°C
Moisture Sensitivity Level	1 (Unlimited)	-
RoHS Status	ROHS3 Compliant	-
Number of Terminations	2	-

Substitute Part Grouping Explanation

Substitution compatibility for the RC3216J301CS is determined by the following mandatory parameters:

Electrical Parameters:

Resistance value: 300 Ohms (exact match required)
Tolerance: ±5% minimum (upgrades to ±1% are acceptable)
Power rating: 0.25W minimum (higher ratings acceptable)
Temperature coefficient: ±100ppm/°C (matching or better)
Operating temperature range: -55°C to 155°C (matching or extended range acceptable)

Mechanical Parameters:

Package type: 1206 (3216 Metric) (exact match required)
Composition: Thick Film (exact match required)
Number of terminations: 2 (exact match required)
Moisture Sensitivity Level: MSL 1 (matching or better acceptable)

Compliance Parameters:

RoHS Status: ROHS3 Compliant (required)
REACH Status: REACH Unaffected (required)

Substitute parts are grouped into three categories:

Direct Equivalents: Parts matching all electrical and mechanical parameters with ±5% tolerance specification. These provide pin-for-pin and functional compatibility without design modification.

Upgrade Parts: Parts with enhanced tolerance (±1%), automotive AEC-Q200 qualification, or higher power ratings (0.75W) while maintaining 1206 package compatibility. These offer improved performance characteristics suitable for applications requiring tighter tolerance or automotive-grade reliability.

Similar Parts: Parts matching resistance, power rating, and package specifications but with different tolerance classes or certification profiles. These provide functional equivalence with alternative qualification pathways.

Parameter Comparison

Manufacturer Part Number	Manufacturer	Resistance (Ohms)	Tolerance	Power (W)	Package	Temp Coeff (ppm/°C)	Op Temp (°C)	Composition	RoHS	MSL	Product Status
RC3216J301CS	Samsung Electro-Mechanics	300	±5%	0.25	1206	±100	-55 to 155	Thick Film	ROHS3	1	Active
RC1206JR-07300RL	YAGEO	300	±5%	0.25	1206	±100	-55 to 155	Thick Film	ROHS3	1	Active
AC1206FR-07300RL	YAGEO	300	±1%	0.25	1206	±100	-55 to 155	Thick Film	ROHS3	1	Active
CR1206-FX-3000ELF	Bourns Inc.	300	±1%	0.25	1206	±100	-55 to 155	Thick Film	ROHS3	1	Active
ERJ-8ENF3000V	Panasonic Electronic Components	300	±1%	0.25	1206	±100	-55 to 155	Thick Film	ROHS3	1	Not For New Designs
KTR18EZPF3000	Rohm Semiconductor	300	±1%	0.25	1206	±100	-55 to 155	Thick Film	ROHS3	1	Active
RC1206FR-07300RL	YAGEO	300	±1%	0.25	1206	±100	-55 to 155	Thick Film	ROHS3	1	Active
RMCF1206FT300R	Stackpole Electronics Inc	300	±1%	0.25	1206	±100	-55 to 155	Thick Film	ROHS3	1	Active
AC1206JR-07300RL	YAGEO	300	±5%	0.25	1206	±100	-55 to 155	Thick Film	ROHS3	1	Active
CRCW1206300RFKEA	Vishay Dale	300	±1%	0.25	1206	±100	-55 to 155	Thick Film	ROHS3	1	Active
CRCW1206300RFKEAHP	Vishay Dale	300	±1%	0.75	1206	±100	-55 to 155	Thick Film	ROHS3	1	Active

Engineering Selection Recommendations

For Direct Replacement (No Design Modification):

RC1206JR-07300RL (YAGEO) provides direct functional equivalence to RC3216J301CS with matching ±5% tolerance, 0.25W power rating, and 1206 package specifications. Both parts maintain identical electrical performance characteristics and ROHS3 compliance. This part is suitable for applications where tolerance and power specifications are non-critical and cost optimization is prioritized.

For Tolerance-Critical Applications:

AC1206FR-07300RL (YAGEO), CR1206-FX-3000ELF (Bourns Inc.), RC1206FR-07300RL (YAGEO), RMCF1206FT300R (Stackpole Electronics Inc.), and CRCW1206300RFKEA (Vishay Dale) all provide ±1% tolerance upgrade while maintaining 0.25W power rating and 1206 package compatibility. These parts are suitable for applications requiring tighter resistance tolerance specifications. All maintain Active product status and ROHS3 compliance.

For Automotive Applications:

AC1206FR-07300RL (YAGEO), KTR18EZPF3000 (Rohm Semiconductor), RMCF1206FT300R (Stackpole Electronics Inc.), and CRCW1206300RFKEA (Vishay Dale) include AEC-Q200 automotive qualification. These parts are suitable for automotive-grade applications requiring enhanced reliability and qualification documentation.

For High-Power Applications:

CRCW1206300RFKEAHP (Vishay Dale) provides 0.75W power rating (3/4W) with ±1% tolerance and pulse withstanding capability. This part is suitable for applications requiring higher power dissipation while maintaining 1206 package form factor.

Parts to Avoid for New Designs:

ERJ-8ENF3000V (Panasonic Electronic Components) carries "Not For New Designs" product status. While electrically and mechanically compatible, this part should not be selected for new product development. Existing designs using this part may continue with current inventory, but new applications should select from Active status alternatives.

Frequently Asked Questions (FAQ)

Q: Can RC1206JR-07300RL directly replace RC3216J301CS without PCB modification?

A: Yes. RC1206JR-07300RL provides direct pin-for-pin and functional replacement. Both parts share identical 1206 package dimensions (0.122" to 0.126" length, 0.063" width), 2-termination configuration, and electrical specifications (300 Ohms ±5%, 0.25W, ±100ppm/°C, -55°C to 155°C operating range). No PCB layout changes are required.

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

A: Tolerance specifies the maximum deviation of actual resistance from the nominal 300 Ohm value. ±5% tolerance allows resistance between 285 and 315 Ohms. ±1% tolerance restricts resistance between 297 and 303 Ohms. Applications requiring precise resistance values or tight circuit performance specifications should use ±1% parts. General-purpose applications typically accept ±5% tolerance.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All listed substitute parts maintain ROHS3 compliance and REACH Unaffected status, matching the environmental and regulatory requirements of the original RC3216J301CS specification.

Q: What does AEC-Q200 qualification mean?

A: AEC-Q200 is an automotive industry standard qualification for passive components. Parts carrying this certification have undergone enhanced reliability testing and are approved for automotive applications. AC1206FR-07300RL, KTR18EZPF3000, RMCF1206FT300R, and CRCW1206300RFKEA include this qualification. Non-automotive applications do not require AEC-Q200 certification.

Q: Can I use CRCW1206300RFKEAHP (0.75W) in place of RC3216J301CS (0.25W)?

A: Yes, from a functional standpoint. CRCW1206300RFKEAHP provides higher power dissipation capability (0.75W versus 0.25W) while maintaining identical resistance value, ±1% tolerance, and 1206 package compatibility. The higher power rating does not degrade performance in applications designed for 0.25W parts. However, verify that PCB thermal design and component placement accommodate the slightly different physical dimensions (height: 0.026" versus 0.026" maximum).

Q: Why is ERJ-8ENF3000V marked "Not For New Designs"?

A: "Not For New Designs" indicates that the manufacturer (Panasonic Electronic Components) has discontinued active development and promotion of this part. Existing inventory may be available, but new product designs should select from Active status alternatives such as CR1206-FX-3000ELF, RC1206FR-07300RL, or RMCF1206FT300R to ensure long-term supply chain stability and manufacturer support.

Q: What is Moisture Sensitivity Level (MSL)?

A: MSL 1 (Unlimited) indicates that the component has no moisture sensitivity restrictions. The part can be stored indefinitely without special humidity control or baking procedures before soldering. All listed substitute parts maintain MSL 1 classification, ensuring identical handling and storage requirements.

Q: Are there dimensional differences between substitute parts?

A: Minor dimensional variations exist within 1206 package specifications. Length ranges from 0.122" to 0.126", and height ranges from 0.024" to 0.030" maximum. These variations remain within standard 1206 package tolerances and do not affect PCB compatibility or soldering processes. Verify specific dimensions only if PCB layout includes tight component spacing constraints.

Q: Which substitute part offers the best value for cost-sensitive applications?

A: RC1206JR-07300RL (YAGEO) provides direct functional equivalence with ±5% tolerance matching the original specification. For applications where tolerance upgrade is not required, this part typically offers competitive pricing while maintaining full electrical and mechanical compatibility.

Q: Can substitute parts be mixed in the same PCB assembly?

A: Yes. All listed substitute parts maintain identical electrical specifications (300 Ohms, ±5% or ±1% tolerance, 0.25W or higher, -55°C to 155°C operating range) and mechanical compatibility (1206 package, 2 terminations). Mixed sourcing from multiple manufacturers is acceptable provided tolerance and power specifications match circuit requirements. Verify with your procurement and quality assurance processes for any supplier qualification requirements.

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