RCS3216J514CS Equivalent & Substitute Parts

Part Overview

The RCS3216J514CS is a 510 kOhms ±5% 0.25W chip resistor in 1206 (3216 Metric) package manufactured by Samsung Electro-Mechanics. This thick film resistor features anti-sulfur and moisture-resistant construction, operating across -55°C to 155°C with a temperature coefficient of ±100ppm/°C. The part is ROHS3 compliant and carries MSL 1 (Unlimited) moisture sensitivity rating.

Substitute parts are necessary when the original manufacturer part becomes unavailable, when alternative sourcing improves supply chain resilience, or when design requirements permit tolerance or feature upgrades within the same electrical and mechanical specifications.

Key Parameters

Parameter	Value
Resistance	510 kOhms
Tolerance	±5%
Power Rating	0.25W (1/4W)
Package / Case	1206 (3216 Metric)
Composition	Thick Film
Temperature Coefficient	±100ppm/°C
Operating Temperature Range	-55°C ~ 155°C
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution eligibility for the RCS3216J514CS is determined by strict adherence to the following core parameters:

Mandatory Matching Parameters:

Resistance value: 510 kOhms
Package / Case: 1206 (3216 Metric)
Power rating: 0.25W (1/4W)
Composition: Thick Film
Temperature coefficient: ±100ppm/°C
Operating temperature range: -55°C ~ 155°C
RoHS compliance: ROHS3 Compliant
Moisture sensitivity level: 1 (Unlimited)

Allowable Variation:

Tolerance: ±5% (main part) to ±1% (substitute parts). Tighter tolerance in substitute parts is acceptable as it represents improved performance within the same electrical function.

Substitute parts are grouped into two categories:

Direct Substitutes (±5% Tolerance): AC1206JR-07510KL, RC1206JR-07510KL. These maintain identical tolerance specification to the main part.
Enhanced Substitutes (±1% Tolerance): AC1206FR-07510KL, CR1206-FX-5103ELF, CRCW1206510KFKEA, ERJ-8ENF5103V, KTR18EZPF5103, RC1206FR-07510KL. These offer improved tolerance performance while maintaining all other electrical and mechanical compatibility.

All substitute parts meet ROHS3 compliance and MSL 1 requirements.

Parameter Comparison

Manufacturer Part Number	Manufacturer	Resistance	Tolerance	Power (W)	Package	Temp Coeff (ppm/°C)	Operating Temp (°C)	Size L x W (mm)	Height Max (mm)	RoHS	MSL	Product Status
RCS3216J514CS	Samsung Electro-Mechanics	510 kOhms	±5%	0.25	1206	±100	-55 ~ 155	3.20 x 1.60	0.66	ROHS3	1	Active
AC1206JR-07510KL	YAGEO	510 kOhms	±5%	0.25	1206	±100	-55 ~ 155	3.10 x 1.60	0.65	ROHS3	1	Active
AC1206FR-07510KL	YAGEO	510 kOhms	±1%	0.25	1206	±100	-55 ~ 155	3.10 x 1.60	0.65	ROHS3	1	Active
CR1206-FX-5103ELF	Bourns Inc.	510 kOhms	±1%	0.25	1206	±100	-55 ~ 155	3.20 x 1.60	0.75	ROHS3	1	Active
CRCW1206510KFKEA	Vishay Dale	510 kOhms	±1%	0.25	1206	±100	-55 ~ 155	3.20 x 1.60	0.60	ROHS3	1	Active
ERJ-8ENF5103V	Panasonic Electronic Components	510 kOhms	±1%	0.25	1206	±100	-55 ~ 155	3.20 x 1.60	0.70	ROHS3	1	Not For New Designs
KTR18EZPF5103	Rohm Semiconductor	510 kOhms	±1%	0.25	1206	±100	-55 ~ 155	3.20 x 1.60	0.65	ROHS3	1	Active
RC1206FR-07510KL	YAGEO	510 kOhms	±1%	0.25	1206	±100	-55 ~ 155	3.10 x 1.60	0.65	ROHS3	1	Active
RC1206JR-07510KL	YAGEO	510 kOhms	±5%	0.25	1206	±100	-55 ~ 155	3.10 x 1.60	0.65	ROHS3	1	Active

Engineering Selection Recommendations

For Direct Replacement (Identical ±5% Tolerance):

AC1206JR-07510KL and RC1206JR-07510KL are direct functional equivalents to RCS3216J514CS. Both are manufactured by YAGEO, carry Active product status, and maintain ±5% tolerance specification. AC1206JR-07510KL includes Automotive AEC-Q200 qualification. RC1206JR-07510KL is available in Tape & Reel packaging with high inventory (80,300 pcs).

For Enhanced Performance (±1% Tolerance):

When circuit design permits tighter tolerance specifications, the following parts provide improved accuracy:

KTR18EZPF5103 (Rohm Semiconductor): Active status, Automotive AEC-Q200 qualified, High Voltage feature, highest inventory availability (83,527 pcs).
CRCW1206510KFKEA (Vishay Dale): Active status, Automotive AEC-Q200 qualified, lowest seated height (0.60mm).
AC1206FR-07510KL (YAGEO): Active status, Automotive AEC-Q200 qualified, compact dimensions (3.10mm length).
RC1206FR-07510KL (YAGEO): Active status, available in Cut Tape & Digi-Reel packaging.
CR1206-FX-5103ELF (Bourns Inc.): Active status, highest inventory (50,872 pcs).

Parts to Avoid for New Designs:

ERJ-8ENF5103V carries "Not For New Designs" product status despite meeting all electrical and mechanical specifications. This designation indicates manufacturer discontinuation trajectory and should be avoided in new circuit designs.

Frequently Asked Questions (FAQ)

Q: Can I use a ±1% tolerance substitute in place of the ±5% RCS3216J514CS?

A: Yes. Tighter tolerance (±1%) is a performance upgrade that maintains full electrical compatibility. The substitute will perform within the original ±5% specification window while offering improved accuracy. This substitution is valid for all applications where the original part is specified.

Q: Are all substitute parts mechanically compatible with the 1206 package footprint?

A: Yes. All substitute parts use the 1206 (3216 Metric) package designation. However, seated height varies between 0.60mm and 0.75mm. Verify PCB assembly equipment clearance specifications if height-constrained applications exist. CRCW1206510KFKEA offers the lowest profile (0.60mm).

Q: What is the difference between AC1206JR-07510KL and AC1206FR-07510KL?

A: Both are YAGEO parts with identical electrical specifications and package. The primary difference is tolerance: AC1206JR-07510KL maintains ±5% (matching the original part), while AC1206FR-07510KL offers ±1% (improved accuracy). Both carry Automotive AEC-Q200 qualification.

Q: Why is ERJ-8ENF5103V listed if it is "Not For New Designs"?

A: ERJ-8ENF5103V meets all electrical and mechanical substitution criteria and remains in inventory (55,222 pcs). The "Not For New Designs" status indicates Panasonic's discontinuation plan. It remains suitable for legacy system repairs or existing design revisions, but should not be selected for new circuit development.

Q: Which substitute offers the best availability?

A: KTR18EZPF5103 (Rohm Semiconductor) has the highest inventory at 83,527 pcs. CR1206-FX-5103ELF (Bourns Inc.) follows with 50,872 pcs. Both are Active status parts with ±1% tolerance and full compliance certifications.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All listed substitute parts carry ROHS3 compliance and MSL 1 (Unlimited) moisture sensitivity rating, matching the original RCS3216J514CS specifications.

Q: Can I mix different substitute part manufacturers in the same PCB assembly?

A: Yes. All substitute parts meet identical electrical specifications (510 kOhms, ±1% or ±5%, 0.25W, 1206 package, ±100ppm/°C, -55°C to 155°C). Mixing manufacturers is electrically valid. However, verify procurement and quality documentation requirements for your application.

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