RT0402FRE072K1L Equivalent & Substitute Parts

Part Overview

The RT0402FRE072K1L is a 2.1 kOhms ±1% thin film chip resistor in 0402 (1005 Metric) package manufactured by YAGEO. This surface-mount device is rated for 0.063W (1/16W) power dissipation with an operating temperature range of -55°C to 155°C. The part is ROHS3 compliant and carries MSL 1 (Unlimited) moisture sensitivity rating. Substitute parts are identified for applications requiring improved tolerance specifications, automotive-grade reliability, or alternative manufacturer sourcing.

Key Parameters

Parameter	Value
Resistance	2.1 kOhms
Tolerance	±1%
Power Rating	0.063W (1/16W)
Package	0402 (1005 Metric)
Composition	Thin Film
Temperature Coefficient	±50ppm/°C
Operating Temperature Range	-55°C to 155°C
RoHS Status	ROHS3 Compliant
MSL Rating	1 (Unlimited)

Substitute Part Grouping Explanation

Substitute parts are grouped into two categories based on allowed electrical and mechanical parameters:

Tolerance Upgrade Substitutes (±0.1% tolerance): RT0402BRD072K1L, CPF0402B2K1E1, ERA-2AEB2101X, and RG1005P-2101-B-T5 provide improved tolerance specifications (±0.1% versus ±1%) while maintaining identical resistance value, power rating, and 0402 package. These parts feature reduced temperature coefficient (±25ppm/°C versus ±50ppm/°C).

Tolerance Downgrade Substitute (±0.5% tolerance): RR0510P-2101-D offers ±0.5% tolerance with identical resistance and power rating in the same 0402 package. This part operates within -55°C to 125°C temperature range.

Automotive-Grade Variants: ERA-2AEB2101X and RG1005P-2101-B-T5 include AEC-Q200 automotive qualification. RG1005P-2101-B-T5 additionally features anti-sulfur construction.

All substitute parts maintain identical resistance value (2.1 kOhms), power rating (0.063W), package format (0402), and ROHS3 compliance.

Parameter Comparison

Part Number	Manufacturer	Resistance	Tolerance	Power (W)	Temp Coeff (ppm/°C)	Operating Temp (°C)	Package	Height Max (mm)	AEC-Q200
RT0402FRE072K1L	YAGEO	2.1 kΩ	±1%	0.063	±50	-55 to 155	0402	0.35	No
RT0402BRD072K1L	YAGEO	2.1 kΩ	±0.1%	0.063	±25	-55 to 155	0402	0.35	No
CPF0402B2K1E1	TE Connectivity	2.1 kΩ	±0.1%	0.063	±25	-55 to 155	0402	0.35	No
ERA-2AEB2101X	Panasonic	2.1 kΩ	±0.1%	0.063	±25	-55 to 155	0402	0.40	Yes
RG1005P-2101-B-T5	Susumu	2.1 kΩ	±0.1%	0.063	±25	-55 to 155	0402	0.40	Yes
RR0510P-2101-D	Susumu	2.1 kΩ	±0.5%	0.063	±25	-55 to 125	0402	0.40	No

Engineering Selection Recommendations

For Standard Applications: RT0402BRD072K1L (YAGEO) or CPF0402B2K1E1 (TE Connectivity) provide tolerance upgrade to ±0.1% with improved temperature coefficient stability while maintaining compatibility with the original 0402 package footprint.

For Automotive Applications: ERA-2AEB2101X (Panasonic) or RG1005P-2101-B-T5 (Susumu) are qualified to AEC-Q200 automotive standards. RG1005P-2101-B-T5 includes anti-sulfur construction for enhanced environmental resistance.

For Relaxed Tolerance Requirements: RR0510P-2101-D (Susumu) accepts ±0.5% tolerance with reduced operating temperature maximum of 125°C. This part is suitable for applications where tolerance specification permits relaxation.

All substitute parts maintain ROHS3 compliance and MSL 1 rating. Physical height differences (0.35mm versus 0.40mm maximum seated height) are within typical PCB assembly tolerances for 0402 components.

Frequently Asked Questions (FAQ)

Q: Can RT0402BRD072K1L replace RT0402FRE072K1L directly? A: Yes. Both parts share identical resistance (2.1 kOhms), power rating (0.063W), and 0402 package. RT0402BRD072K1L provides improved tolerance (±0.1% versus ±1%) and lower temperature coefficient (±25ppm/°C versus ±50ppm/°C). No circuit redesign is required.

Q: What is the difference between tolerance upgrade and downgrade substitutes? A: Tolerance upgrade substitutes (±0.1%) provide tighter resistance accuracy than the original ±1% specification. Tolerance downgrade substitute RR0510P-2101-D offers ±0.5% tolerance. Selection depends on circuit accuracy requirements.

Q: Are automotive-grade parts (ERA-2AEB2101X, RG1005P-2101-B-T5) suitable for non-automotive applications? A: Yes. Automotive-qualified parts exceed standard reliability requirements and are fully compatible with non-automotive circuits. AEC-Q200 certification indicates enhanced qualification testing and environmental stress screening.

Q: Does the 0.05mm height difference between parts affect PCB assembly? A: No. The maximum seated height variation (0.35mm to 0.40mm) is within standard PCB assembly tolerances for 0402 components and does not affect reflow soldering or component placement.

Q: Which substitute offers the best overall performance? A: RG1005P-2101-B-T5 combines ±0.1% tolerance, ±25ppm/°C temperature coefficient, AEC-Q200 automotive qualification, and anti-sulfur construction. ERA-2AEB2101X provides equivalent electrical performance with AEC-Q200 qualification. Both operate across the full -55°C to 155°C temperature range.

Q: Can RR0510P-2101-D be used in high-temperature applications above 125°C? A: No. RR0510P-2101-D maximum operating temperature is 125°C. For applications requiring operation to 155°C, use RT0402BRD072K1L, CPF0402B2K1E1, ERA-2AEB2101X, or RG1005P-2101-B-T5.

Q: Are all substitute parts ROHS3 compliant? A: Yes. All listed substitute parts carry ROHS3 compliance certification and MSL 1 (Unlimited) moisture sensitivity rating, matching the original RT0402FRE072K1L specifications.

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