RK73B1HTTC161J Equivalent & Substitute Parts

Part Overview

The RK73B1HTTC161J is a 160 Ohms ±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," necessitating identification of equivalent alternatives from active product lines that maintain electrical and mechanical compatibility.

Key Parameters

Parameter	Value
Resistance	160 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 (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution of the RK73B1HTTC161J is determined by strict equivalence in the following parameters:

Critical Parameters for Direct Substitution:

Resistance value: 160 Ohms
Tolerance: ±5% (minimum requirement)
Power rating: 0.05W (1/20W)
Package: 0201 (0603 Metric)
Composition: Thick Film
Physical dimensions: 0.024" L x 0.012" W (0.60mm x 0.30mm)
Number of terminations: 2
RoHS3 compliance
MSL rating: 1 (Unlimited)

Acceptable Variations:

Temperature coefficient: ±200ppm/°C or better (lower values acceptable)
Operating temperature range: Must support minimum -55°C to 155°C (extended ranges acceptable)
Automotive rating: AEC-Q200 preferred but not mandatory for general substitution
Product status: Active products preferred over obsolete

Substitute parts are grouped into three categories: direct equivalents (matching all electrical specifications at ±5% tolerance), and upgrade options (improved tolerance at ±1%).

Parameter Comparison

Part Number	Manufacturer	Resistance	Tolerance	Power (W)	Temp Coeff (ppm/°C)	Operating Temp (°C)	Product Status	Inventory (Pcs)
RK73B1HTTC161J	KOA Speer	160 Ω	±5%	0.05	±200	-55 ~ 155	Not For New Designs	1137
RK73B1HTTCM161J	KOA Speer	160 Ω	±5%	0.05	±200	-55 ~ 155	Active	826
AC0201JR-07160RL	YAGEO	160 Ω	±5%	0.05	±200	-55 ~ 155	Active	739
CRCW0201160RJNED	Vishay Dale	160 Ω	±5%	0.05	±200	-55 ~ 155	Active	1136
ERJ-1GNJ161C	Panasonic	160 Ω	±5%	0.05	±200	-55 ~ 125	Active	296534
RC0201JR-07160RL	YAGEO	160 Ω	±5%	0.05	±200	-55 ~ 125	Active	29180
CRCW0201160RFKED	Vishay Dale	160 Ω	±1%	0.05	±100	-55 ~ 155	Active	897
CRCW0201160RFNED	Vishay Dale	160 Ω	±1%	0.05	±200	-55 ~ 155	Active	16687
ERJ-1GNF1600C	Panasonic	160 Ω	±1%	0.05	±200	-55 ~ 125	Active	66819

Engineering Selection Recommendations

Direct Equivalent Substitutes (±5% Tolerance):

The following parts provide direct electrical and mechanical equivalence to RK73B1HTTC161J:

RK73B1HTTCM161J (KOA Speer): Recommended primary substitute. Same manufacturer, identical specifications, active product status. Maintains AEC-Q200 automotive rating and full temperature range (-55°C to 155°C).
CRCW0201160RJNED (Vishay Dale): Active product with matching specifications. Highest inventory availability (1136 pcs) among direct equivalents. Supports full operating temperature range.
AC0201JR-07160RL (YAGEO): Active product with moisture-resistant thick film composition. Maintains AEC-Q200 automotive rating and full temperature range.

Conditional Substitutes (Temperature Range Limitation):

The following parts are electrically equivalent but operate to -55°C to 125°C maximum:

ERJ-1GNJ161C (Panasonic): Highest inventory availability (296534 pcs). Suitable for applications not requiring operation above 125°C.
RC0201JR-07160RL (YAGEO): Moisture-resistant composition. Suitable for applications not requiring operation above 125°C.

Upgrade Options (±1% Tolerance):

For applications requiring improved tolerance specifications:

CRCW0201160RFNED (Vishay Dale): ±1% tolerance with ±200ppm/°C temperature coefficient. Maintains full operating range (-55°C to 155°C). Highest inventory among upgrade options (16687 pcs).
CRCW0201160RFKED (Vishay Dale): ±1% tolerance with improved ±100ppm/°C temperature coefficient. Maintains full operating range (-55°C to 155°C).
ERJ-1GNF1600C (Panasonic): ±1% tolerance with ±200ppm/°C temperature coefficient. Limited to -55°C to 125°C operating range.

Frequently Asked Questions (FAQ)

Q: Can I use ERJ-1GNJ161C or RC0201JR-07160RL as direct replacements for RK73B1HTTC161J?

A: These parts are electrically equivalent at ±5% tolerance and 0.05W power rating in 0201 package. However, they are rated only to 125°C maximum operating temperature, compared to the original part's 155°C. Use these substitutes only if your application does not require operation above 125°C.

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

A: Direct equivalents (RK73B1HTTCM161J, CRCW0201160RJNED, AC0201JR-07160RL) maintain ±5% tolerance matching the original specification. Upgrade options (CRCW0201160RFNED, CRCW0201160RFKED, ERJ-1GNF1600C) provide improved ±1% tolerance for applications requiring tighter resistance values. All maintain the same 160 Ohm resistance and 0.05W power rating.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All listed substitute parts are ROHS3 compliant with MSL rating of 1 (Unlimited), matching the original RK73B1HTTC161J specifications.

Q: Which substitute offers the best inventory availability?

A: ERJ-1GNJ161C (Panasonic) offers the highest inventory at 296534 pcs. This part is electrically equivalent but limited to 125°C maximum operating temperature. For full temperature range support, CRCW0201160RFNED (Vishay Dale) provides 16687 pcs inventory.

Q: Can I use a ±1% tolerance part in place of the ±5% original?

A: Yes. Parts with ±1% tolerance are superior substitutes for applications where tighter tolerance is beneficial or required. CRCW0201160RFNED and CRCW0201160RFKED (Vishay Dale) and ERJ-1GNF1600C (Panasonic) all provide ±1% tolerance with identical mechanical compatibility.

Q: What is the significance of the 0201 package designation?

A: The 0201 package (0603 Metric) is the physical form factor. All listed substitutes use identical 0.024" L x 0.012" W (0.60mm x 0.30mm) dimensions with 0.010" (0.26mm) maximum seated height. This ensures mechanical compatibility with existing PCB layouts and assembly processes.

Q: Why is RK73B1HTTC161J marked "Not For New Designs"?

A: This designation indicates the part is in mature or declining production phase. KOA Speer recommends using RK73B1HTTCM161J for new designs, which provides identical specifications with active product status and continued manufacturing support.

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