RL73N1JR10FTD Equivalent & Substitute Parts

Part Overview

The RL73N1JR10FTD is a 0.1 ohm, 1% tolerance, 1/10W chip resistor manufactured by TE Connectivity Passive Product. This thick film current sense resistor is designed for precision current measurement applications in 0603 (1608 metric) package format. The part is active in production status and maintains full compliance with RoHS3 and REACH regulations. Substitute parts are identified when equivalent electrical specifications, mechanical dimensions, and packaging requirements are met across alternative manufacturers.

Key Parameters

Parameter	Value
Resistance	100 mOhms (0.1 Ohm)
Tolerance	±1%
Power Rating	0.1W (1/10W)
Package / Case	0603 (1608 Metric)
Composition	Thick Film
Temperature Coefficient	±300ppm/°C
Operating Temperature Range	-55°C to 155°C
Features	Current Sense
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)

Substitute Part Grouping Explanation

Substitute parts for the RL73N1JR10FTD are qualified based on strict electrical and mechanical parameter matching. The following criteria determine substitution eligibility:

Electrical Parameters:

Resistance value: 100 mOhms (0.1 Ohm)
Tolerance: ±1%
Power rating: 0.1W (1/10W)
Temperature coefficient: ±300ppm/°C
Operating temperature range: -55°C to 155°C

Mechanical Parameters:

Package type: 0603 (1608 Metric)
Composition: Thick Film
Number of terminations: 2
Physical dimensions: 0.063" L x 0.031" W (1.60mm x 0.80mm)
Maximum seated height: 0.022" (0.55mm)

Compliance Parameters:

RoHS3 compliance
Moisture sensitivity level: 1 (Unlimited)
REACH unaffected status

All identified substitutes meet these parameters without exception.

Parameter Comparison

Parameter	RL73N1JR10FTD (TE Connectivity)	RL73N1JR10FTDF (TE Connectivity)	ERJ-3RSFR10V (Panasonic)
Manufacturer	TE Connectivity Passive Product	TE Connectivity Passive Product	Panasonic Electronic Components
Resistance	100 mOhms	100 mOhms	100 mOhms
Tolerance	±1%	±1%	±1%
Power Rating	0.1W (1/10W)	0.1W (1/10W)	0.1W (1/10W)
Package / Case	0603 (1608 Metric)	0603 (1608 Metric)	0603 (1608 Metric)
Composition	Thick Film	Thick Film	Thick Film
Temperature Coefficient	±300ppm/°C	±300ppm/°C	±300ppm/°C
Operating Temperature	-55°C to 155°C	-55°C to 155°C	-55°C to 155°C
Features	Current Sense	Current Sense	Automotive AEC-Q200, Current Sense
Size / Dimension	0.063" L x 0.031" W (1.60mm x 0.80mm)	0.063" L x 0.031" W (1.60mm x 0.80mm)	0.063" L x 0.031" W (1.60mm x 0.80mm)
Height - Seated (Max)	0.022" (0.55mm)	0.022" (0.55mm)	0.022" (0.55mm)
Number of Terminations	2	2	2
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)
REACH Status	REACH Unaffected	REACH Unaffected	REACH Unaffected
Product Status	Active	Active	Active

Engineering Selection Recommendations

Direct Manufacturer Substitute: RL73N1JR10FTDF

The RL73N1JR10FTDF is a direct substitute manufactured by TE Connectivity Passive Product. This part shares identical electrical specifications, mechanical dimensions, and compliance certifications with the RL73N1JR10FTD. Both parts are active in production status and maintain ROHS3 compliance and REACH unaffected status. Selection between these two TE Connectivity variants is determined by packaging and inventory requirements.

Cross-Manufacturer Substitute: ERJ-3RSFR10V

The ERJ-3RSFR10V manufactured by Panasonic Electronic Components meets all electrical and mechanical parameters of the RL73N1JR10FTD. This part is qualified to AEC-Q200 automotive standards in addition to standard current sense functionality. The ERJ-3RSFR10V maintains identical resistance, tolerance, power rating, temperature coefficient, operating temperature range, package dimensions, and compliance certifications. Selection of this part is appropriate for applications requiring automotive-grade qualification or when Panasonic component sourcing is preferred.

Frequently Asked Questions (FAQ)

Q: Can the RL73N1JR10FTDF be used as a direct replacement for the RL73N1JR10FTD?

A: Yes. Both parts are manufactured by TE Connectivity Passive Product and share identical electrical specifications (100 mOhms, ±1%, 0.1W), mechanical dimensions (0603 package), composition (thick film), temperature characteristics (±300ppm/°C, -55°C to 155°C), and compliance status (ROHS3, REACH unaffected). The parts are functionally interchangeable.

Q: What is the difference between the RL73N1JR10FTD and the ERJ-3RSFR10V?

A: The primary difference is manufacturer and automotive qualification. The RL73N1JR10FTD is manufactured by TE Connectivity, while the ERJ-3RSFR10V is manufactured by Panasonic. The ERJ-3RSFR10V carries AEC-Q200 automotive qualification. All other electrical parameters, mechanical dimensions, and compliance certifications are identical between the two parts.

Q: Are all three parts suitable for current sense applications?

A: Yes. All three parts—RL73N1JR10FTD, RL73N1JR10FTDF, and ERJ-3RSFR10V—are specified with current sense functionality and are designed for precision current measurement applications.

Q: Do these parts require special handling or storage?

A: All three parts carry Moisture Sensitivity Level 1 (Unlimited), indicating no special moisture control requirements during storage or handling.

Q: Can the ERJ-3RSFR10V be used in non-automotive applications?

A: Yes. The ERJ-3RSFR10V meets all electrical and mechanical specifications required for the RL73N1JR10FTD application. AEC-Q200 qualification is an additional feature that does not restrict use in non-automotive applications.

Q: Are there any differences in packaging between these parts?

A: All three parts are supplied in Tape & Reel (TR) packaging format. The 0603 (1608 metric) package dimensions and termination configuration are identical across all three parts.

Q: What is the operating temperature range for these resistors?

A: All three parts operate across the temperature range of -55°C to 155°C with a temperature coefficient of ±300ppm/°C.

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