Equivalent & Substitute Parts for RK73B1HTTC752J

Part Overview

The RK73B1HTTC752J is a 7.5 kOhms ±5% thick film chip resistor in 0201 package (0.60mm x 0.30mm) rated at 0.05W (1/20W) power dissipation. Manufactured by KOA Speer Electronics, Inc., this component is designed for automotive applications and meets AEC-Q200 qualification standards. The part carries a Product Status designation of "Not For New Designs," indicating it has been superseded in the manufacturer's product line. Equivalent and substitute parts are necessary to ensure design continuity, maintain supply chain flexibility, and support ongoing production requirements for existing applications.

Key Parameters

Parameter	Value
Resistance	7.5 kOhms
Tolerance	±5%
Power Rating	0.05W (1/20W)
Package / Case	0201 (0603 Metric)
Composition	Thick Film
Temperature Coefficient	±200ppm/°C
Operating Temperature Range	-55°C ~ 155°C
Moisture Sensitivity Level	1 (Unlimited)
RoHS Status	ROHS3 Compliant
Automotive Rating	AEC-Q200

Substitute Part Grouping Explanation

Substitution eligibility for the RK73B1HTTC752J is determined by strict adherence to the following electrical and mechanical parameters:

Primary Substitution Criteria (Direct Equivalents):

Resistance value: 7.5 kOhms (exact match required)
Tolerance: ±5% (minimum acceptable)
Power rating: 0.05W / 1/20W (exact match required)
Package: 0201 (0603 Metric) (exact match required)
Composition: Thick Film
Temperature Coefficient: ±200ppm/°C (acceptable range)
Operating Temperature: -55°C minimum to 125°C minimum (RK73B1HTTC752J operates to 155°C)
Moisture Sensitivity Level: 1 (Unlimited)
RoHS Compliance: ROHS3 Compliant

Upgrade Substitution Criteria (Enhanced Performance): Parts meeting all primary criteria with improved specifications:

Tolerance: ±1% (tighter tolerance than original ±5%)
Temperature Coefficient: ±100ppm/°C or ±200ppm/°C (improved stability)
Operating Temperature: -55°C ~ 155°C (extended upper range matching original)

Substitutes are grouped into two categories: Direct Equivalents (matching all original specifications) and Upgrades (offering improved tolerance or temperature performance while maintaining compatibility).

Parameter Comparison

Manufacturer Part Number	Manufacturer	Resistance	Tolerance	Power (W)	Temp Coeff (ppm/°C)	Operating Temp (°C)	Product Status	RoHS
RK73B1HTTC752J	KOA Speer Electronics	7.5k	±5%	0.05	±200	-55 ~ 155	Not For New Designs	ROHS3
RK73B1HTTCM752J	KOA Speer Electronics	7.5k	±5%	0.05	±200	-55 ~ 155	Active	ROHS3
AC0201JR-077K5L	YAGEO	7.5k	±5%	0.05	±200	-55 ~ 155	Active	ROHS3
CRCW02017K50JNED	Vishay Dale	7.5k	±5%	0.05	±200	-55 ~ 155	Active	ROHS3
ERJ-1GNJ752C	Panasonic Electronic Components	7.5k	±5%	0.05	±200	-55 ~ 125	Active	ROHS3
CR0201-JW-752GLF	Bourns Inc.	7.5k	±5%	0.05	±200	-55 ~ 125	Active	ROHS3
CRCW02017K50FKED	Vishay Dale	7.5k	±1%	0.05	±100	-55 ~ 155	Active	ROHS3
CRCW02017K50FNED	Vishay Dale	7.5k	±1%	0.05	±200	-55 ~ 155	Active	ROHS3
CRG0201F7K5	TE Connectivity Passive Product	7.5k	±1%	0.05	±200	-55 ~ 155	Active	Not applicable
ERJ-1GNF7501C	Panasonic Electronic Components	7.5k	±1%	0.05	±200	-55 ~ 125	Active	ROHS3
MCR006YRTF7501	Rohm Semiconductor	7.5k	±1%	0.05	±250	-55 ~ 125	Discontinued at DiGi Electronics	ROHS3

Engineering Selection Recommendations

Direct Equivalent Selection (±5% Tolerance):

For applications requiring direct replacement of RK73B1HTTC752J without design modification, the following parts are qualified substitutes:

RK73B1HTTCM752J (KOA Speer Electronics): Manufacturer-recommended equivalent with Active product status. Identical electrical specifications and operating temperature range (-55°C ~ 155°C). ROHS3 compliant. Preferred choice for KOA-specified designs.
AC0201JR-077K5L (YAGEO): Direct equivalent with Active status. Matches all electrical parameters including ±200ppm/°C temperature coefficient and -55°C ~ 155°C operating range. ROHS3 compliant. Includes moisture-resistant thick film composition.
CRCW02017K50JNED (Vishay Dale): Direct equivalent with Active status. Identical specifications across all critical parameters. ROHS3 compliant. Highest inventory availability (16,591 pcs).

Conditional Direct Equivalents (Operating Temperature Limitation):

The following parts meet all electrical specifications but operate to 125°C maximum instead of 155°C:

ERJ-1GNJ752C (Panasonic Electronic Components): Active status, ±5% tolerance, ±200ppm/°C temperature coefficient. Suitable for applications with maximum operating temperature of 125°C. ROHS3 compliant. Highest inventory among this group (22,387 pcs).
CR0201-JW-752GLF (Bourns Inc.): Active status, identical electrical specifications. Operating temperature limited to -55°C ~ 125°C. ROHS3 compliant.

Upgrade Selection (±1% Tolerance):

For applications requiring improved tolerance performance:

CRCW02017K50FKED (Vishay Dale): ±1% tolerance with ±100ppm/°C temperature coefficient. Operating range -55°C ~ 155°C matches original. ROHS3 compliant. Highest inventory among ±1% options (23,886 pcs).
CRCW02017K50FNED (Vishay Dale): ±1% tolerance with ±200ppm/°C temperature coefficient. Full temperature range -55°C ~ 155°C. ROHS3 compliant. Largest inventory (42,914 pcs).
ERJ-1GNF7501C (Panasonic Electronic Components): ±1% tolerance, ±200ppm/°C temperature coefficient. Operating temperature -55°C ~ 125°C. ROHS3 compliant. Largest overall inventory (178,418 pcs).
CRG0201F7K5 (TE Connectivity Passive Product): ±1% tolerance, ±200ppm/°C temperature coefficient. Full temperature range -55°C ~ 155°C. RoHS status listed as "Not applicable."

Discontinued Part (Not Recommended for New Selection):

MCR006YRTF7501 (Rohm Semiconductor): Marked as "Discontinued at DiGi Electronics." Although specifications are acceptable (±1% tolerance, -55°C ~ 125°C operating range), discontinued status makes this unsuitable for ongoing production planning.

Frequently Asked Questions (FAQ)

Q: Can I use a ±1% tolerance part as a substitute for the original ±5% part?

A: Yes. The ±1% tolerance parts listed as upgrades are electrically compatible and provide superior tolerance performance. They meet or exceed all electrical and mechanical requirements of the RK73B1HTTC752J. No design modification is required. Selection depends on whether the improved tolerance provides value for your application.

Q: What is the significance of the operating temperature range difference between -55°C ~ 155°C and -55°C ~ 125°C?

A: The original RK73B1HTTC752J operates to 155°C maximum. Parts with -55°C ~ 125°C maximum operating temperature are suitable only for applications where the component will not experience temperatures above 125°C. For designs requiring the full 155°C upper limit, select parts explicitly rated to that temperature.

Q: Why is RK73B1HTTC752J marked "Not For New Designs"?

A: This designation indicates the part has been superseded by the manufacturer. The recommended replacement is RK73B1HTTCM752J, which maintains identical specifications but carries Active product status. For new designs, select from parts with Active status.

Q: Are all substitute parts ROHS3 compliant?

A: All listed substitutes except CRG0201F7K5 carry explicit ROHS3 Compliant status. CRG0201F7K5 lists RoHS status as "Not applicable." Verify RoHS compliance requirements for your specific application before selection.

Q: What is Moisture Sensitivity Level (MSL) 1, and why is it important?

A: MSL 1 (Unlimited) indicates the component has unlimited shelf life and requires no special moisture control during storage or handling. All listed substitutes carry MSL 1 rating, ensuring compatibility with standard component storage and assembly processes.

Q: Can I substitute ERJ-1GNJ752C for RK73B1HTTC752J in an automotive application?

A: ERJ-1GNJ752C is electrically compatible and ROHS3 compliant. However, it operates to 125°C maximum versus the original 155°C. If your automotive application requires operation above 125°C, this part is not suitable. Verify the maximum operating temperature requirement of your specific application before selection.

Q: Which substitute offers the best inventory availability?

A: ERJ-1GNF7501C (Panasonic) offers the largest inventory at 178,418 pcs. For direct ±5% equivalents, ERJ-1GNJ752C (Panasonic) provides 22,387 pcs. CRCW02017K50FNED (Vishay Dale) offers 42,914 pcs among ±1% tolerance options.

Q: What is the difference between CRCW02017K50FKED and CRCW02017K50FNED?

A: Both are ±1% tolerance Vishay Dale parts in 0201 package with 0.05W power rating. CRCW02017K50FKED has ±100ppm/°C temperature coefficient, while CRCW02017K50FNED has ±200ppm/°C. Both operate across -55°C ~ 155°C. Selection depends on whether the tighter temperature coefficient of FKED provides value for your application.

Q: Is MCR006YRTF7501 a viable substitute?

A: MCR006YRTF7501 meets electrical specifications (±1% tolerance, 7.5k ohms, 0.05W, 0201 package) but is marked "Discontinued at DiGi Electronics." Discontinued status creates supply chain risk. Use only if existing inventory is available and future supply is not required.

Q: Do all 0201 package parts have identical physical dimensions?

A: Yes. All listed substitutes use the 0201 (0603 Metric) package with identical dimensions: 0.024" L x 0.012" W (0.60mm x 0.30mm) and maximum seated height of 0.010" (0.26mm). Physical interchangeability is guaranteed across all listed parts.

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