RK73B1HTTC473J Equivalent & Substitute Parts

Part Overview

The RK73B1HTTC473J is a 47 kOhms ±5% 0.05W thick film chip resistor in 0201 package (0603 Metric) manufactured by KOA Speer Electronics, Inc. This component is rated for automotive applications under AEC-Q200 standard with operating temperature range of -55°C to 155°C. The part is currently classified as Not For New Designs, making identification of equivalent and substitute components essential for ongoing production support, legacy system maintenance, and design transitions.

Key Parameters

Parameter	Value
Resistance	47 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
Size / Dimension	0.024" L x 0.012" W (0.60mm x 0.30mm)
Height - Seated (Max)	0.010" (0.26mm)
Number of Terminations	2
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution of the RK73B1HTTC473J is determined by strict equivalence across the following critical parameters:

Primary Substitution Criteria:

Resistance value: 47 kOhms (exact match required)
Tolerance: ±5% (minimum acceptable tolerance)
Power rating: 0.05W / 1/20W (exact match required)
Package: 0201 (0603 Metric) (exact match required)
Composition: Thick Film (exact match required)
Temperature coefficient: ±200ppm/°C (exact match required)
Operating temperature range: -55°C minimum to 155°C maximum (minimum acceptable range)
RoHS compliance: ROHS3 Compliant (required)
MSL rating: 1 (Unlimited) (required)

Direct Equivalent Parts maintain all parameters identical to the main part, differing only in manufacturer or product status (Active vs. Not For New Designs).

Upgrade Parts offer improved tolerance (±1% vs. ±5%) while maintaining all other critical parameters. These components are electrically and mechanically interchangeable with enhanced precision characteristics.

Parameter Comparison

Manufacturer Part Number	Manufacturer	Resistance	Tolerance	Power (W)	Temp Coeff (ppm/°C)	Operating Temp (°C)	Package	Product Status	Inventory (Pcs)
RK73B1HTTC473J	KOA Speer	47k	±5%	0.05	±200	-55 ~ 155	0201	Not For New Designs	4,258
RK73B1HTTCM473J	KOA Speer	47k	±5%	0.05	±200	-55 ~ 155	0201	Active	661
AC0201JR-0747KL	YAGEO	47k	±5%	0.05	±200	-55 ~ 155	0201	Active	21,131
CRCW020147K0JNED	Vishay Dale	47k	±5%	0.05	±200	-55 ~ 155	0201	Active	17,786
ERJ-1GNJ473C	Panasonic	47k	±5%	0.05	±200	-55 ~ 125	0201	Active	209,233
RC0201JR-0747KL	YAGEO	47k	±5%	0.05	±200	-55 ~ 125	0201	Active	24,632
RMCF0201JT47K0	Stackpole	47k	±5%	0.05	±200	-55 ~ 155	0201	Active	29,280
CRCW020147K0FKED	Vishay Dale	47k	±1%	0.05	±100	-55 ~ 155	0201	Active	39,122
CRCW020147K0FNED	Vishay Dale	47k	±1%	0.05	±200	-55 ~ 155	0201	Active	14,627
ERJ-1GNF4702C	Panasonic	47k	±1%	0.05	±200	-55 ~ 125	0201	Active	85,437
RC0201FR-0747KL	YAGEO	47k	±1%	0.05	±200	-55 ~ 125	0201	Active	2,300

Engineering Selection Recommendations

Direct Equivalent Selection (±5% Tolerance):

For applications requiring exact parameter matching to RK73B1HTTC473J, the following active alternatives are available:

RK73B1HTTCM473J (KOA Speer): Manufacturer-recommended upgrade from the obsolete RK73B1HTTC473J. Maintains identical electrical and mechanical specifications with Active product status. Limited inventory (661 pcs).
AC0201JR-0747KL (YAGEO): Full parameter equivalence with highest inventory availability (21,131 pcs). Includes moisture-resistant thick film composition. Operating temperature range extends to 155°C.
CRCW020147K0JNED (Vishay Dale): Complete electrical and mechanical equivalence. Substantial inventory (17,786 pcs). Operating temperature range extends to 155°C.
RMCF0201JT47K0 (Stackpole Electronics): Full equivalence with AEC-Q200 rating. Highest inventory among direct equivalents (29,280 pcs). Operating temperature range extends to 155°C.

Conditional Equivalents (Operating Temperature Limitation):

ERJ-1GNJ473C (Panasonic): Electrically and mechanically equivalent with maximum operating temperature of 125°C (vs. 155°C for main part). Largest inventory availability (209,233 pcs). Suitable for applications not requiring full 155°C upper temperature limit.
RC0201JR-0747KL (YAGEO): Equivalent specifications with maximum operating temperature of 125°C. Includes moisture-resistant composition. Inventory: 24,632 pcs.

Upgrade Selection (±1% Tolerance):

For applications requiring improved tolerance performance:

CRCW020147K0FKED (Vishay Dale): ±1% tolerance with ±100ppm/°C temperature coefficient. Full 155°C operating range. Inventory: 39,122 pcs.
CRCW020147K0FNED (Vishay Dale): ±1% tolerance with ±200ppm/°C temperature coefficient. Full 155°C operating range. Inventory: 14,627 pcs.
ERJ-1GNF4702C (Panasonic): ±1% tolerance with ±200ppm/°C temperature coefficient. Maximum operating temperature 125°C. Largest upgrade inventory (85,437 pcs).
RC0201FR-0747KL (YAGEO): ±1% tolerance with moisture-resistant composition. Maximum operating temperature 125°C. Limited inventory (2,300 pcs).

All substitute parts maintain ROHS3 compliance, MSL 1 rating, and 0201 package specifications required for direct substitution.

Frequently Asked Questions (FAQ)

Q: Can RK73B1HTTC473J be replaced with any of the listed substitute parts?

A: Direct equivalents (±5% tolerance parts) are fully interchangeable with RK73B1HTTC473J in all electrical and mechanical aspects. Upgrade parts (±1% tolerance) are also interchangeable but offer improved precision. Conditional equivalents with 125°C maximum operating temperature are suitable only for applications not requiring the full 155°C upper temperature range of the original part.

Q: What is the difference between direct equivalents and upgrade parts?

A: Direct equivalents maintain ±5% tolerance matching the original RK73B1HTTC473J. Upgrade parts offer ±1% tolerance, providing tighter resistance value control. Both categories are mechanically and electrically compatible. Selection depends on circuit tolerance requirements.

Q: Why do some substitute parts have a maximum operating temperature of 125°C instead of 155°C?

A: ERJ-1GNJ473C, RC0201JR-0747KL, ERJ-1GNF4702C, and RC0201FR-0747KL are rated to 125°C maximum. These parts are suitable for applications operating within this temperature range. For designs requiring full 155°C operation, select alternatives rated to 155°C.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All listed substitute parts maintain ROHS3 compliance and MSL 1 (Unlimited) moisture sensitivity rating, matching the environmental and regulatory requirements of RK73B1HTTC473J.

Q: What packaging formats are available for these substitutes?

A: All substitute parts are supplied in 0201 (0603 Metric) package. Packaging delivery formats vary: Tape & Reel (TR), Cut Tape (CT) & Digi-Reel®. Verify packaging format with supplier based on assembly requirements.

Q: Which substitute offers the best inventory availability?

A: ERJ-1GNJ473C (Panasonic) provides the largest inventory at 209,233 pcs. For upgrade tolerance (±1%), ERJ-1GNF4702C offers 85,437 pcs. For direct equivalents with full 155°C rating, RMCF0201JT47K0 (Stackpole) provides 29,280 pcs.

Q: Can upgrade parts (±1% tolerance) be used in place of ±5% tolerance specifications?

A: Yes. Upgrade parts with ±1% tolerance are backward compatible with designs specified for ±5% tolerance. The tighter tolerance provides improved performance. No circuit redesign is required.

Q: What is the significance of temperature coefficient differences?

A: Temperature coefficient indicates resistance value drift with temperature change. RK73B1HTTC473J and most substitutes specify ±200ppm/°C. CRCW020147K0FKED offers ±100ppm/°C, providing superior temperature stability. Selection depends on circuit sensitivity to resistance variation across the operating temperature range.

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