RT0402FRE073K09L Equivalent & Substitute Parts

Part Overview

The RT0402FRE073K09L is a 3.09 kOhms ±1% thin film chip resistor in 0402 (1005 Metric) package manufactured by YAGEO. This component is actively produced and widely used in precision analog circuits, signal conditioning, and measurement applications where moderate tolerance and stable temperature performance are required. Substitute parts are identified for applications requiring improved tolerance specifications, enhanced temperature stability, or alternative manufacturer sourcing while maintaining identical electrical and mechanical compatibility.

Key Parameters

Parameter	Value
Resistance	3.09 kOhms
Tolerance	±1%
Power Rating	0.063W (1/16W)
Package	0402 (1005 Metric)
Composition	Thin Film
Operating Temperature Range	-55°C to 155°C
Temperature Coefficient	±50ppm/°C
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)

Substitute Part Grouping Explanation

Substitute parts for the RT0402FRE073K09L are grouped based on the following criteria:

Electrical Compatibility: All substitute parts maintain the identical 3.09 kOhms resistance value and 0402 package footprint, ensuring direct PCB compatibility without layout modifications.

Tolerance Grades: Substitutes are available in three tolerance classifications:

±0.1% tolerance (improved precision): RT0402BRD073K09L, RT0402BRE073K09L, CPF0402B3K09E1, ERA-2AEB3091X, RN73C1E3K09BTDF
±0.5% tolerance (intermediate precision): RT0402DRD073K09L
±1% tolerance (original specification): RT0402FRE073K09L

Temperature Coefficient: Substitutes range from ±10ppm/°C to ±50ppm/°C, affecting long-term stability in temperature-sensitive applications.

Manufacturer Diversity: Multiple manufacturers (YAGEO, TE Connectivity, Panasonic) provide equivalent parts, enabling supply chain flexibility.

Automotive Qualification: ERA-2AEB3091X carries AEC-Q200 automotive qualification for applications requiring automotive-grade reliability.

Parameter Comparison

Part Number	Manufacturer	Resistance	Tolerance	Temp Coeff (ppm/°C)	Power Rating	Package	Operating Temp	RoHS Status	Inventory (Pcs)
RT0402FRE073K09L	YAGEO	3.09 kΩ	±1%	±50	0.063W	0402	-55 to 155°C	ROHS3	9,773
RT0402BRD073K09L	YAGEO	3.09 kΩ	±0.1%	±25	0.063W	0402	-55 to 155°C	ROHS3	20,140
RT0402BRE073K09L	YAGEO	3.09 kΩ	±0.1%	±50	0.063W	0402	-55 to 155°C	ROHS3	7,650
RT0402DRD073K09L	YAGEO	3.09 kΩ	±0.5%	±25	0.063W	0402	-55 to 155°C	ROHS3	16,840
CPF0402B3K09E1	TE Connectivity	3.09 kΩ	±0.1%	±25	0.063W	0402	-55 to 155°C	ROHS3	2,820
ERA-2AEB3091X	Panasonic	3.09 kΩ	±0.1%	±25	0.063W	0402	-55 to 155°C	ROHS3	13,712
RN73C1E3K09BTDF	TE Connectivity	3.09 kΩ	±0.1%	±10	0.063W	0402	-55 to 155°C	ROHS3	887

Engineering Selection Recommendations

For Standard Applications: RT0402FRE073K09L remains suitable for general-purpose analog circuits where ±1% tolerance meets design requirements. High inventory availability (9,773 pcs) supports consistent supply.

For Precision Circuits: RT0402BRD073K09L provides ±0.1% tolerance with improved temperature coefficient (±25ppm/°C) and highest inventory (20,140 pcs), making it the primary upgrade path for applications requiring tighter tolerance control.

For Temperature-Sensitive Applications: RN73C1E3K09BTDF offers the lowest temperature coefficient (±10ppm/°C) among available substitutes, suitable for circuits requiring maximum stability across the full operating range. Limited inventory (887 pcs) requires advance planning.

For Automotive Applications: ERA-2AEB3091X carries AEC-Q200 qualification and is the only substitute with automotive-grade certification. Suitable for automotive electronics and safety-critical applications.

For Supply Chain Diversification: CPF0402B3K09E1 (TE Connectivity) and ERA-2AEB3091X (Panasonic) provide manufacturer alternatives to YAGEO, reducing single-source dependency while maintaining identical electrical specifications.

For Intermediate Tolerance Requirements: RT0402DRD073K09L offers ±0.5% tolerance as a middle ground between standard and precision grades, with strong inventory availability (16,840 pcs).

All substitute parts maintain ROHS3 compliance, MSL 1 rating, and identical package dimensions, ensuring direct PCB compatibility without design modifications.

Frequently Asked Questions (FAQ)

Q: Can RT0402BRD073K09L directly replace RT0402FRE073K09L on existing PCBs?

A: Yes. Both parts share identical 0402 package dimensions (1.00mm × 0.50mm), footprint, and termination count. No PCB layout changes are required. The substitute offers improved tolerance (±0.1% vs ±1%) and lower temperature coefficient (±25ppm/°C vs ±50ppm/°C), making it functionally superior for the same application.

Q: What is the difference between RT0402BRD073K09L and RT0402BRE073K09L?

A: Both parts share ±0.1% tolerance and identical resistance value. The primary difference is temperature coefficient: RT0402BRD073K09L operates at ±25ppm/°C while RT0402BRE073K09L operates at ±50ppm/°C. RT0402BRD073K09L is preferred for temperature-sensitive applications. RT0402BRD073K09L also has higher inventory availability (20,140 vs 7,650 pcs).

Q: Is ERA-2AEB3091X suitable for non-automotive applications?

A: Yes. ERA-2AEB3091X meets all standard specifications for general electronics applications. AEC-Q200 qualification indicates enhanced reliability testing and is not restrictive for non-automotive use. The ±0.1% tolerance and ±25ppm/°C temperature coefficient make it suitable for precision circuits.

Q: Why does RN73C1E3K09BTDF have lower inventory than other substitutes?

A: RN73C1E3K09BTDF (887 pcs) has the lowest temperature coefficient (±10ppm/°C) among available substitutes, making it a specialized option for applications requiring maximum temperature stability. Lower inventory reflects its niche application focus. Standard alternatives with adequate temperature performance are available in higher quantities.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All listed substitute parts carry ROHS3 compliance certification, matching the original RT0402FRE073K09L specification. All parts also maintain MSL 1 (Unlimited) moisture sensitivity rating.

Q: Can I use a ±0.1% tolerance part in a circuit designed for ±1% tolerance?

A: Yes. A tighter tolerance part (±0.1%) is functionally compatible with circuits designed for looser tolerance (±1%). The substitute will operate within the original design specifications while providing improved accuracy. No circuit modifications are required.

Q: What is the height difference between ERA-2AEB3091X and other substitutes?

A: ERA-2AEB3091X has a maximum seated height of 0.016" (0.40mm), while all other substitutes are 0.014" (0.35mm). This 0.01" difference is negligible for most applications but should be verified if PCB clearance is constrained or if automated assembly height tolerances are critical.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message