RK73B1HTTC100J Equivalent & Substitute Parts

Part Overview

The RK73B1HTTC100J is a 10 Ohm ±5% 0.05W thick film chip resistor in 0201 package (0603 metric) manufactured by KOA Speer Electronics, Inc. This part is rated for automotive applications under AEC-Q200 standard with operating temperature range of -55°C to 155°C. The product status is listed as Not For New Designs, making identification of equivalent and substitute parts essential for ongoing production support, design updates, and component sourcing flexibility.

Key Parameters

Parameter	Value
Resistance	10 Ohms
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)
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution of the RK73B1HTTC100J is determined by strict equivalence across the following critical parameters:

Direct Substitution Criteria (Same Electrical & Mechanical Specifications):

Resistance value: 10 Ohms
Tolerance: ±5%
Power rating: 0.05W (1/20W)
Package: 0201 (0603 Metric)
Composition: Thick Film
Temperature coefficient: ±200ppm/°C
Operating temperature range: -55°C to 155°C (minimum)
Physical dimensions: 0.024" L x 0.012" W (0.60mm x 0.30mm)
RoHS3 compliance
MSL rating: 1 (Unlimited)

Upgrade Substitution Criteria (Enhanced Tolerance):

All parameters identical to direct substitution except tolerance upgraded to ±1%
Maintains all electrical and mechanical compatibility
Provides improved accuracy for precision applications

Parts are grouped into three categories: MFR Recommended (same series, active status), Direct Manufacturer equivalents (different manufacturers, identical specifications), and Upgrade options (tighter tolerance, same package and electrical characteristics).

Parameter Comparison

Manufacturer Part Number	Manufacturer	Resistance	Tolerance	Power (W)	Temp Coeff (ppm/°C)	Op Temp Range (°C)	Product Status	Packaging	Height Max (mm)	Inventory (Pcs)
RK73B1HTTC100J	KOA Speer	10 Ω	±5%	0.05	±200	-55 ~ 155	Not For New Designs	Tape & Reel	0.26	12088
RK73B1HTTCM100J	KOA Speer	10 Ω	±5%	0.05	±200	-55 ~ 155	Active	Not Specified	0.26	1053
CRCW020110R0JNED	Vishay Dale	10 Ω	±5%	0.05	±200	-55 ~ 155	Active	Tape & Reel	0.26	10200
ERJ-1GNJ100C	Panasonic	10 Ω	±5%	0.05	±200	-55 ~ 125	Active	Cut Tape & Digi-Reel	0.26	163107
RMCF0201JT10R0	Stackpole	10 Ω	±5%	0.05	±200	-55 ~ 155	Active	Tape & Reel	0.28	5253
CRCW020110R0FNED	Vishay Dale	10 Ω	±1%	0.05	±200	-55 ~ 155	Active	Cut Tape & Digi-Reel	0.26	563881
CRG0201F10R	TE Connectivity	10 Ω	±1%	0.05	±400	-55 ~ 155	Active	Tape & Reel	0.26	10290
ERJ-1GNF10R0C	Panasonic	10 Ω	±1%	0.05	±200	-55 ~ 125	Active	Cut Tape & Digi-Reel	0.26	250947
RMCF0201FT10R0	Stackpole	10 Ω	±1%	0.05	±200	-55 ~ 155	Active	Tape & Reel	0.28	668997

Engineering Selection Recommendations

For Direct Replacement (Same Tolerance ±5%):

RK73B1HTTCM100J from KOA Speer is the manufacturer-recommended equivalent with identical electrical and mechanical specifications. This part maintains the same series designation and is in Active product status, providing long-term availability assurance.

CRCW020110R0JNED from Vishay Dale provides direct equivalence with high inventory availability (10200 pcs). This part is suitable for applications where multi-source qualification is required.

RMCF0201JT10R0 from Stackpole Electronics Inc is qualified to AEC-Q200 automotive standard, matching the original part's automotive rating. This part is suitable for automotive applications requiring equivalent qualification levels.

ERJ-1GNJ100C from Panasonic Electronic Components offers the highest inventory availability (163107 pcs) among direct equivalents. Operating temperature range extends to -55°C to 125°C, which is acceptable for applications not requiring the full 155°C upper limit of the original part.

For Upgraded Tolerance (±1%):

CRCW020110R0FNED from Vishay Dale provides ±1% tolerance upgrade while maintaining all other specifications. Inventory availability is substantial (563881 pcs).

RMCF0201FT10R0 from Stackpole Electronics Inc offers ±1% tolerance with AEC-Q200 automotive qualification and extensive inventory (668997 pcs).

ERJ-1GNF10R0C from Panasonic Electronic Components provides ±1% tolerance upgrade with the highest inventory among upgrade options (250947 pcs). Operating temperature range is -55°C to 125°C.

CRG0201F10R from TE Connectivity Passive Product offers ±1% tolerance. Note that temperature coefficient is ±400ppm/°C compared to ±200ppm/°C in other options, which may affect performance in temperature-sensitive applications.

Frequently Asked Questions (FAQ)

Q: Can I use a ±1% tolerance part as a substitute for the ±5% RK73B1HTTC100J?

A: Yes. The ±1% tolerance parts listed as upgrades are fully compatible. They maintain identical resistance value (10 Ohms), power rating (0.05W), package (0201), and operating temperature range. The tighter tolerance provides improved accuracy and is a direct upgrade path.

Q: What is the difference between the direct substitutes and upgrade substitutes?

A: Direct substitutes maintain the original ±5% tolerance specification. Upgrade substitutes provide ±1% tolerance, which is tighter and more accurate. All other electrical and mechanical parameters remain equivalent. Selection depends on circuit accuracy requirements.

Q: Are all listed substitutes compatible with the original RK73B1HTTC100J in terms of physical dimensions?

A: All direct substitutes and upgrades use the 0201 package (0603 metric) with dimensions 0.024" L x 0.012" W (0.60mm x 0.30mm). Maximum seated height is 0.010" (0.26mm) for most parts, with RMCF series parts at 0.011" (0.28mm). This 0.02mm difference is negligible for standard PCB assembly processes.

Q: Which substitute offers the best inventory availability?

A: RMCF0201FT10R0 (upgrade, ±1% tolerance) has the highest inventory at 668997 pcs. For direct ±5% equivalents, ERJ-1GNJ100C from Panasonic offers 163107 pcs.

Q: Can I use ERJ-1GNJ100C or ERJ-1GNF10R0C if my application requires operation up to 155°C?

A: No. Both Panasonic ERJ-1GN series parts are rated to -55°C to 125°C maximum. For applications requiring full -55°C to 155°C range, use KOA Speer, Vishay Dale, or Stackpole alternatives.

Q: What is the significance of AEC-Q200 rating?

A: AEC-Q200 is the automotive electronics council qualification standard for passive components. RK73B1HTTC100J, RK73B1HTTCM100J, and RMCF0201JT10R0 / RMCF0201FT10R0 carry this rating. For automotive applications, these parts are preferred. Non-automotive rated parts may be used in non-automotive applications.

Q: Does packaging format (Tape & Reel vs. Cut Tape & Digi-Reel) affect electrical performance?

A: No. Packaging format affects only handling, storage, and assembly logistics. Electrical and mechanical specifications are identical regardless of packaging type. Selection should be based on manufacturing process requirements.

Q: Why is RK73B1HTTC100J marked as "Not For New Designs"?

A: This status indicates the part is in mature/legacy phase. While suitable for ongoing production of existing designs, new designs should use active alternatives such as RK73B1HTTCM100J or other listed active-status equivalents to ensure long-term availability and support.

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