FCR1206NT5K10 Equivalent & Substitute Parts

Part Overview

The FCR1206NT5K10 is a 5.1 kOhms ±30% 0.25W thick film chip resistor in 1206 (3216 Metric) package manufactured by Stackpole Electronics Inc. This component is actively produced and widely used in general-purpose applications. Substitute parts are necessary when design requirements demand improved tolerance specifications, automotive-grade reliability certifications, enhanced power ratings, or when the original part becomes unavailable from inventory.

Key Parameters

Parameter	Value
Resistance	5.1 kOhms
Tolerance	±30%
Power Rating	0.25W (1/4W)
Package	1206 (3216 Metric)
Composition	Thick Film
Temperature Coefficient	±200ppm/°C
Operating Temperature Range	-55°C ~ 125°C
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution eligibility is determined by the following criteria:

Mandatory Compatibility Parameters:

Resistance value: 5.1 kOhms (exact match required)
Package: 1206 (3216 Metric) (exact match required)
Composition: Thick Film (exact match required)
Number of Terminations: 2 (exact match required)

Allowable Variation Parameters:

Tolerance: May be equal to or tighter than ±30%
Power Rating: May be equal to or greater than 0.25W
Temperature Coefficient: May be equal to or lower absolute value
Operating Temperature Range: May be equal to or wider than -55°C ~ 125°C
Certifications and Features: May include additional automotive or pulse-withstanding capabilities

All substitute parts listed maintain the mandatory compatibility parameters while offering improvements in tolerance, power handling, or operational specifications.

Parameter Comparison

Part Number	Manufacturer	Resistance	Tolerance	Power (W)	Temp Coeff (ppm/°C)	Operating Temp (°C)	Features	Product Status
FCR1206NT5K10	Stackpole Electronics Inc	5.1 kOhms	±30%	0.25	±200	-55 ~ 125	—	Active
RMCF1206JT5K10	Stackpole Electronics Inc	5.1 kOhms	±5%	0.25	±200	-55 ~ 155	Automotive AEC-Q200	Active
CRCW12065K10JNEA	Vishay Dale	5.1 kOhms	±5%	0.25	±200	-55 ~ 155	Automotive AEC-Q200	Active
CRCW12065K10JNEAHP	Vishay Dale	5.1 kOhms	±5%	0.75	±200	-55 ~ 155	Automotive AEC-Q200, Pulse Withstanding	Active
ERJ-8GEYJ512V	Panasonic Electronic Components	5.1 kOhms	±5%	0.25	±200	-55 ~ 155	Automotive AEC-Q200	Not For New Designs
ERJ-P08J512V	Panasonic Electronic Components	5.1 kOhms	±5%	0.667	±200	-55 ~ 155	Automotive AEC-Q200, Pulse Withstanding	Active
SR1206JR-7W5K1L	YAGEO	5.1 kOhms	±5%	0.5	±100	-55 ~ 155	Automotive AEC-Q200, Pulse Withstanding	Active

Engineering Selection Recommendations

For General-Purpose Applications with Improved Tolerance: RMCF1206JT5K10 and CRCW12065K10JNEA are direct functional upgrades offering ±5% tolerance while maintaining 0.25W power rating and 1206 package compatibility. Both are actively produced and ROHS3 compliant.

For Automotive or High-Reliability Applications: RMCF1206JT5K10, CRCW12065K10JNEA, ERJ-P08J512V, and SR1206JR-7W5K1L all carry AEC-Q200 automotive certification. Selection depends on power dissipation requirements and extended temperature operation to 155°C.

For Enhanced Power Dissipation: CRCW12065K10JNEAHP (0.75W) and ERJ-P08J512V (0.667W) accommodate higher power dissipation while maintaining the 1206 package footprint. Both include pulse-withstanding capability and AEC-Q200 certification.

For Superior Temperature Stability: SR1206JR-7W5K1L offers ±100ppm/°C temperature coefficient compared to ±200ppm/°C in other options, providing improved stability across the operating temperature range.

Parts to Avoid for New Designs: ERJ-8GEYJ512V is marked "Not For New Designs" and should not be selected for new product development despite meeting electrical specifications.

Frequently Asked Questions (FAQ)

Q: Can I substitute FCR1206NT5K10 with a tighter tolerance part? A: Yes. Any substitute with tolerance equal to or tighter than ±30% is electrically compatible. RMCF1206JT5K10, CRCW12065K10JNEA, ERJ-8GEYJ512V, ERJ-P08J512V, and SR1206JR-7W5K1L all offer ±5% tolerance.

Q: Are all substitute parts pin-compatible? A: Yes. All substitute parts use the 1206 (3216 Metric) package with 2 terminations, ensuring identical PCB footprint and soldering compatibility.

Q: What is the difference between standard and AEC-Q200 versions? A: AEC-Q200 certification indicates automotive-grade qualification with enhanced reliability testing, extended temperature range to 155°C, and suitability for automotive applications. Standard versions lack this certification.

Q: Can I use a higher power-rated resistor as a substitute? A: Yes. Higher power ratings (0.5W, 0.667W, 0.75W) are compatible substitutes. The component will operate safely at lower power dissipation than its rating. Physical dimensions may vary slightly; verify PCB layout constraints.

Q: Why is ERJ-8GEYJ512V marked "Not For New Designs"? A: This designation indicates the manufacturer has discontinued active development for this part number. While existing inventory may be available, new designs should select actively produced alternatives.

Q: What is the significance of "Pulse Withstanding" feature? A: Pulse withstanding capability indicates the resistor can tolerate transient overvoltage events without degradation. This feature is beneficial in circuits with switching transients or surge conditions.

Q: Are all substitute parts ROHS3 compliant? A: Yes. All listed substitute parts are ROHS3 compliant and suitable for applications requiring RoHS compliance.

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