RC3216J510CS Equivalent & Substitute Parts Reference

Part Overview

The RC3216J510CS is a 51 Ohm ±5% 0.25W thick film chip resistor manufactured by Samsung Electro-Mechanics in 1206 (3216 Metric) package format. This component is classified as Active product status with moisture resistant characteristics and ROHS3 compliance. Equivalent and substitute parts are identified based on matching electrical specifications, mechanical dimensions, and environmental ratings. Alternative components may be required due to inventory availability, supply chain considerations, or application-specific performance requirements such as tolerance upgrades or automotive qualification.

Key Parameters

Parameter	Value
Resistance	51 Ohms
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 to 155°C
Moisture Sensitivity Level	1 (Unlimited)
RoHS Status	ROHS3 Compliant
Product Status	Active

Substitute Part Grouping Explanation

Substitute parts for the RC3216J510CS are categorized based on strict electrical and mechanical compatibility criteria. The primary substitution parameters are:

Core Matching Criteria:

Resistance value: 51 Ohms (exact match required)
Package format: 1206 (3216 Metric) (exact match required)
Power rating: 0.25W (1/4W) (exact match required)
Composition: Thick Film (exact match required)
Temperature coefficient: ±100ppm/°C (exact match required)
Operating temperature range: -55°C to 155°C (exact match required)
Moisture Sensitivity Level: 1 (Unlimited) (exact match required)
RoHS compliance: ROHS3 Compliant (exact match required)

Tolerance Consideration: Direct substitutes maintain ±5% tolerance matching. Upgrade substitutes feature improved ±1% tolerance while maintaining all other electrical and mechanical parameters. Upgrade parts provide enhanced precision for applications requiring tighter tolerance specifications.

Automotive Qualification: Certain substitute parts include AEC-Q200 automotive qualification and anti-sulfur features, representing performance enhancements for automotive applications while maintaining base electrical specifications.

Parameter Comparison

Part Number	Manufacturer	Resistance	Tolerance	Power	Package	Temp Coeff	Op Temp	Features	Product Status
RC3216J510CS	Samsung Electro-Mechanics	51Ω	±5%	0.25W	1206	±100ppm/°C	-55~155°C	Moisture Resistant	Active
RC1206JR-0751RL	YAGEO	51Ω	±5%	0.25W	1206	±100ppm/°C	-55~155°C	Moisture Resistant	Active
AC1206FR-0751RL	YAGEO	51Ω	±1%	0.25W	1206	±100ppm/°C	-55~155°C	Automotive AEC-Q200, Moisture Resistant	Active
AF1206FR-0751RL	YAGEO	51Ω	±1%	0.25W	1206	±100ppm/°C	-55~155°C	Anti-Sulfur, Automotive AEC-Q200	Active
CR1206-FX-51R0ELF	Bourns Inc.	51Ω	±1%	0.25W	1206	±100ppm/°C	-55~155°C	Moisture Resistant	Active
ERJ-8ENF51R0V	Panasonic Electronic Components	51Ω	±1%	0.25W	1206	±100ppm/°C	-55~155°C	Automotive AEC-Q200	Not For New Designs
KTR18EZPF51R0	Rohm Semiconductor	51Ω	±1%	0.25W	1206	±100ppm/°C	-55~155°C	Automotive AEC-Q200, High Voltage	Active
MCR18ERTF51R0	Rohm Semiconductor	51Ω	±1%	0.25W	1206	±100ppm/°C	-55~155°C	Thick Film	Discontinued at DiGi Electronics
RC1206FR-0751RL	YAGEO	51Ω	±1%	0.25W	1206	±100ppm/°C	-55~155°C	Moisture Resistant	Active
RMCF1206FT51R0	Stackpole Electronics Inc	51Ω	±1%	0.25W	1206	±100ppm/°C	-55~155°C	Automotive AEC-Q200	Active
AC1206JR-0751RL	YAGEO	51Ω	±5%	0.25W	1206	±100ppm/°C	-55~155°C	Automotive AEC-Q200, Moisture Resistant	Active

Engineering Selection Recommendations

Direct Equivalent (±5% Tolerance): RC1206JR-0751RL from YAGEO serves as the primary direct equivalent to RC3216J510CS. Both components maintain identical electrical specifications, tolerance, and moisture resistant characteristics with Active product status. This part is suitable for direct replacement in applications where ±5% tolerance is specified.

Upgrade Options (±1% Tolerance): RC1206FR-0751RL (YAGEO) provides tolerance upgrade to ±1% while maintaining moisture resistant properties and Active status. This component is recommended for applications requiring improved precision without automotive qualification requirements.

Automotive-Qualified Alternatives: AC1206FR-0751RL, AF1206FR-0751RL (YAGEO), RMCF1206FT51R0 (Stackpole Electronics), and KTR18EZPF51R0 (Rohm Semiconductor) all feature AEC-Q200 automotive qualification with ±1% tolerance. AF1206FR-0751RL additionally includes anti-sulfur protection. These parts are suitable for automotive applications requiring enhanced reliability and environmental performance.

Discontinued Components: ERJ-8ENF51R0V (Panasonic) and MCR18ERTF51R0 (Rohm) are marked as Not For New Designs and Discontinued at DiGi Electronics respectively. These parts should not be selected for new designs despite electrical compatibility.

Bourns Alternative: CR1206-FX-51R0ELF from Bourns Inc. offers ±1% tolerance with moisture resistant features and Active status, providing an alternative source for precision applications.

Frequently Asked Questions (FAQ)

Q: Can RC1206JR-0751RL directly replace RC3216J510CS? A: Yes. RC1206JR-0751RL from YAGEO is a direct equivalent. Both components share identical resistance (51 Ohms), tolerance (±5%), power rating (0.25W), package format (1206), temperature coefficient (±100ppm/°C), operating temperature range (-55°C to 155°C), and moisture resistant characteristics. Product status is Active for both parts.

Q: What is the difference between direct substitutes and upgrade substitutes? A: Direct substitutes maintain ±5% tolerance matching the original RC3216J510CS specification. Upgrade substitutes feature improved ±1% tolerance while maintaining all other electrical and mechanical parameters. Upgrade parts provide enhanced precision for applications requiring tighter tolerance specifications but are electrically compatible with ±5% tolerance designs.

Q: Are automotive-qualified parts compatible with non-automotive applications? A: Yes. Automotive-qualified parts such as AC1206FR-0751RL, RMCF1206FT51R0, and KTR18EZPF51R0 meet AEC-Q200 standards and are fully compatible with non-automotive applications. These parts provide additional reliability margin and environmental performance without compromising compatibility.

Q: Why should ERJ-8ENF51R0V and MCR18ERTF51R0 be avoided? A: ERJ-8ENF51R0V is marked as Not For New Designs, and MCR18ERTF51R0 is Discontinued at DiGi Electronics. While electrically compatible, these parts should not be selected for new designs due to supply chain discontinuation and manufacturer recommendations against new applications.

Q: Are there dimensional differences between substitute parts? A: Minor dimensional variations exist within the 1206 package specification. All parts maintain the 1206 (3216 Metric) package format with length ranging from 0.120" to 0.126" (3.05mm to 3.20mm) and width of 0.063" (1.60mm). Height variations range from 0.026" to 0.030" (0.65mm to 0.75mm). These variations remain within standard PCB footprint tolerances and do not affect mechanical compatibility.

Q: Which substitute offers the best combination of performance and availability? A: RC1206FR-0751RL (YAGEO) combines ±1% tolerance upgrade, moisture resistant features, Active product status, and high inventory availability (57,800 pcs). For automotive applications, RMCF1206FT51R0 (Stackpole Electronics) provides AEC-Q200 qualification with comparable availability (77,669 pcs).

Q: Can I use AC1206JR-0751RL as a substitute? A: AC1206JR-0751RL maintains ±5% tolerance matching the original specification and includes automotive AEC-Q200 qualification with moisture resistant features. This part is compatible but represents a similar-tolerance alternative rather than a direct equivalent, offering automotive-grade reliability for non-automotive applications if required.

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