RCS3216F514CS 510K Ohm 1206 Chip Resistor Equivalent & Substitute Parts

Part Overview

The RCS3216F514CS is a 510 kOhms ±1% 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 anti-sulfur and moisture-resistant characteristics. The part is ROHS3 compliant and suitable for general industrial and consumer applications requiring precision resistive elements in compact surface-mount form factors.

Equivalent and substitute parts are necessary when the primary part becomes unavailable, when supply chain optimization is required, or when design flexibility across manufacturing sources is needed while maintaining identical electrical and mechanical performance specifications.

Key Parameters

Parameter	Value
Resistance	510 kOhms
Tolerance	±1%
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)
Number of Terminations	2

Substitute Part Grouping Explanation

Substitution eligibility for the RCS3216F514CS is determined by strict equivalence across the following critical parameters:

Electrical Parameters (Must Match Exactly):

Resistance value: 510 kOhms
Tolerance: ±1%
Power rating: 0.25W (1/4W)
Temperature coefficient: ±100ppm/°C
Operating temperature range: -55°C ~ 155°C

Mechanical Parameters (Must Match Exactly):

Package type: 1206 (3216 Metric)
Number of terminations: 2
Composition: Thick Film

Compliance Parameters (Must Match or Exceed):

RoHS Status: ROHS3 Compliant
Moisture Sensitivity Level: 1 (Unlimited)

All substitute parts listed below meet these exact specifications. Dimensional variations within supplier tolerances (length, width, height) do not affect substitutability provided the package designation remains 1206 (3216 Metric).

Parameter Comparison

Manufacturer Part Number	Manufacturer	Resistance	Tolerance	Power (W)	Package	Temp Coeff	Op. Temp Range	RoHS	MSL	Product Status
RCS3216F514CS	Samsung Electro-Mechanics	510 kOhms	±1%	0.25	1206	±100ppm/°C	-55°C ~ 155°C	ROHS3	1	Active
AC1206FR-07510KL	YAGEO	510 kOhms	±1%	0.25	1206	±100ppm/°C	-55°C ~ 155°C	ROHS3	1	Active
CR1206-FX-5103ELF	Bourns Inc.	510 kOhms	±1%	0.25	1206	±100ppm/°C	-55°C ~ 155°C	ROHS3	1	Active
CRCW1206510KFKEA	Vishay Dale	510 kOhms	±1%	0.25	1206	±100ppm/°C	-55°C ~ 155°C	ROHS3	1	Active
ERJ-8ENF5103V	Panasonic Electronic Components	510 kOhms	±1%	0.25	1206	±100ppm/°C	-55°C ~ 155°C	ROHS3	1	Not For New Designs
KTR18EZPF5103	Rohm Semiconductor	510 kOhms	±1%	0.25	1206	±100ppm/°C	-55°C ~ 155°C	ROHS3	1	Active
RC1206FR-07510KL	YAGEO	510 kOhms	±1%	0.25	1206	±100ppm/°C	-55°C ~ 155°C	ROHS3	1	Active

Engineering Selection Recommendations

Primary Substitutes (Active Status, Recommended for New Designs):

AC1206FR-07510KL (YAGEO) - Active product status with AEC-Q200 automotive qualification. Suitable for applications requiring automotive-grade reliability. High inventory availability (15,202 pcs).
CR1206-FX-5103ELF (Bourns Inc.) - Active product status with moisture-resistant composition. Largest inventory position (50,872 pcs) ensures supply continuity. Highest seated height specification (0.030").
CRCW1206510KFKEA (Vishay Dale) - Active product status with AEC-Q200 automotive qualification. Lowest seated height specification (0.024") suitable for space-constrained applications. Inventory: 16,438 pcs.
KTR18EZPF5103 (Rohm Semiconductor) - Active product status with AEC-Q200 automotive qualification and high-voltage features. Largest inventory availability (83,527 pcs). Optimal for high-reliability applications.
RC1206FR-07510KL (YAGEO) - Active product status with moisture-resistant composition. Available in Cut Tape and Digi-Reel packaging. Limited inventory (2,100 pcs).

Secondary Substitute (Legacy Status):

ERJ-8ENF5103V (Panasonic Electronic Components) - Marked as "Not For New Designs" but electrically and mechanically equivalent. Suitable only for replacement or repair of existing assemblies. High inventory (55,222 pcs) available for legacy support.

All listed substitutes maintain identical electrical performance and mechanical compatibility with the RCS3216F514CS. Selection should prioritize Active status parts for new designs. AEC-Q200 qualified parts (AC1206FR-07510KL, CRCW1206510KFKEA, ERJ-8ENF5103V, KTR18EZPF5103) are recommended for automotive and high-reliability applications.

Frequently Asked Questions (FAQ)

Q1: Can I use any of these substitute parts as a direct replacement for RCS3216F514CS?

A: Yes. All listed substitute parts meet identical electrical specifications (510 kOhms ±1%, 0.25W, ±100ppm/°C, -55°C ~ 155°C) and mechanical requirements (1206 package, 2 terminations, thick film composition). They are electrically and mechanically interchangeable at the component level.

Q2: What is the difference between parts marked "Active" and "Not For New Designs"?

A: "Active" status indicates the manufacturer continues production and supports the part for new circuit designs. "Not For New Designs" (ERJ-8ENF5103V) indicates the manufacturer has discontinued active development but may continue limited production for legacy support. For new designs, select only Active status parts.

Q3: Do the dimensional variations (length, width, height) affect substitutability?

A: No. All parts are designated as 1206 (3216 Metric) package. Minor dimensional variations within supplier tolerances (for example, length ranging from 0.122" to 0.126", height from 0.024" to 0.030") do not affect electrical performance or mechanical fit in standard 1206 footprints. Verify PCB layout accommodates the maximum height specification if space is constrained.

Q4: What does AEC-Q200 qualification mean?

A: AEC-Q200 is an automotive electronics qualification standard. Parts with this rating (AC1206FR-07510KL, CRCW1206510KFKEA, ERJ-8ENF5103V, KTR18EZPF5103) have undergone additional reliability testing and are approved for automotive applications. Use AEC-Q200 qualified parts for automotive, industrial, or high-reliability applications.

Q5: Which substitute has the best inventory availability?

A: KTR18EZPF5103 (Rohm Semiconductor) has the highest inventory at 83,527 pcs, followed by CR1206-FX-5103ELF (Bourns Inc.) at 50,872 pcs. These parts offer the best supply security for high-volume production.

Q6: Are all these parts RoHS3 compliant?

A: Yes. All listed parts, including the main part RCS3216F514CS, are ROHS3 compliant and have Moisture Sensitivity Level 1 (Unlimited), indicating no special moisture handling requirements during storage or assembly.

Q7: What packaging options are available?

A: Most substitutes are supplied in Tape & Reel (TR) format for automated assembly. RC1206FR-07510KL is available in Cut Tape (CT) and Digi-Reel format. Verify packaging compatibility with your assembly process before selection.

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