Equivalent & Substitute Parts for RK73B1HTTC820J

Part Overview

The RK73B1HTTC820J is an 82 Ohm ±5% thick film chip resistor rated at 0.05W (1/20W) in 0201 package format (0.60mm x 0.30mm metric). Manufactured by KOA Speer Electronics, Inc., this component is designed for automotive applications and meets AEC-Q200 qualification standards. The part is classified as "Not For New Designs," indicating it has been superseded in the manufacturer's product line. Identifying equivalent and substitute parts is necessary to support existing designs, manage inventory transitions, and ensure continued component availability for production and maintenance applications.

Key Parameters

Parameter	Value	Significance for Substitution
Resistance Value	82 Ohms	Must match exactly
Tolerance	±5%	Defines acceptable resistance range; tighter tolerances are upgradeable
Power Rating	0.05W (1/20W)	Must match or exceed
Package / Case	0201 (0603 Metric)	Must match for PCB compatibility
Composition	Thick Film	Defines electrical characteristics and temperature behavior
Temperature Coefficient	±200ppm/°C	Defines resistance stability across temperature range
Operating Temperature Range	-55°C ~ 155°C	Must support application requirements
RoHS Compliance	ROHS3 Compliant	Required for regulatory compliance
Moisture Sensitivity Level	MSL 1 (Unlimited)	Defines storage and handling requirements

Substitute Part Grouping Explanation

Substitute parts for the RK73B1HTTC820J are categorized based on electrical and mechanical compatibility within the following framework:

Direct Equivalents (Same Specifications): Parts that maintain identical resistance value (82 Ohms), tolerance (±5%), power rating (0.05W), package format (0201), composition (thick film), and operating temperature range. These parts are interchangeable without circuit redesign.

Manufacturer Recommended Equivalent: RK73B1HTTCM820J from KOA Speer Electronics represents the active product line successor to the RK73B1HTTC820J, maintaining all electrical and mechanical specifications while offering current production status and availability.

Direct Manufacturer Alternatives: AC0201JR-0782RL (YAGEO), CRCW020182R0JNED (Vishay Dale), ERJ-1GNJ820C (Panasonic), and RC0201JR-0782RL (YAGEO) provide equivalent performance across all critical parameters. These parts are sourced from different manufacturers but deliver identical functional characteristics within the same package footprint.

Upgrade Options (Enhanced Tolerance): CRCW020182R0FKED, CRCW020182R0FNED, ERJ-1GNF82R0C, and RMCF0201FT82R0 offer tighter tolerance specifications (±1% instead of ±5%) and reduced temperature coefficients (±100ppm/°C or ±200ppm/°C). These upgrades provide improved precision and stability while maintaining backward compatibility with the original 0201 package and power rating.

Critical Substitution Parameters:

Resistance: 82 Ohms (exact match required)
Package: 0201 (0603 Metric) (exact match required)
Power Rating: 0.05W minimum (equal or greater acceptable)
Tolerance: ±5% minimum (tighter tolerances acceptable)
Composition: Thick Film (required)
RoHS3 Compliance: Required
MSL Rating: 1 (Unlimited) (required)

Parameter Comparison

Manufacturer Part Number	Manufacturer	Resistance	Tolerance	Power (W)	Temp Coeff (ppm/°C)	Operating Temp (°C)	Product Status	Inventory (Pcs)
RK73B1HTTC820J	KOA Speer	82 Ω	±5%	0.05	±200	-55 ~ 155	Not For New Designs	883
RK73B1HTTCM820J	KOA Speer	82 Ω	±5%	0.05	±200	-55 ~ 155	Active	715
AC0201JR-0782RL	YAGEO	82 Ω	±5%	0.05	±200	-55 ~ 155	Active	942
CRCW020182R0JNED	Vishay Dale	82 Ω	±5%	0.05	±200	-55 ~ 155	Active	10909
ERJ-1GNJ820C	Panasonic	82 Ω	±5%	0.05	±200	-55 ~ 125	Active	14867
RC0201JR-0782RL	YAGEO	82 Ω	±5%	0.05	±200	-55 ~ 125	Active	4620
CRCW020182R0FKED	Vishay Dale	82 Ω	±1%	0.05	±100	-55 ~ 155	Active	10797
CRCW020182R0FNED	Vishay Dale	82 Ω	±1%	0.05	±200	-55 ~ 155	Active	61283
ERJ-1GNF82R0C	Panasonic	82 Ω	±1%	0.05	±200	-55 ~ 125	Active	9143
RMCF0201FT82R0	Stackpole	82 Ω	±1%	0.05	±200	-55 ~ 155	Active	779

Engineering Selection Recommendations

For Direct Replacement (Equivalent Specifications):

Select from RK73B1HTTCM820J, AC0201JR-0782RL, CRCW020182R0JNED, ERJ-1GNJ820C, or RC0201JR-0782RL when the original ±5% tolerance and ±200ppm/°C temperature coefficient are acceptable for circuit operation. All direct equivalents maintain the 0201 package format and 0.05W power rating. RK73B1HTTCM820J is the manufacturer-recommended successor from KOA Speer and carries Active product status. CRCW020182R0JNED offers the highest inventory availability (10,909 pcs) among direct equivalents. ERJ-1GNJ820C provides the largest stock position (14,867 pcs) across all substitute options.

For Enhanced Precision Applications:

Select CRCW020182R0FNED, CRCW020182R0FKED, ERJ-1GNF82R0C, or RMCF0201FT82R0 when circuit design requires tighter tolerance control (±1%) and improved temperature stability. CRCW020182R0FNED combines ±1% tolerance with ±200ppm/°C temperature coefficient and the highest inventory level (61,283 pcs). CRCW020182R0FKED offers the tightest temperature coefficient specification (±100ppm/°C) with extended operating range to 155°C. All upgrade options maintain 0201 package compatibility and 0.05W power rating.

For Automotive Applications:

RK73B1HTTCM820J, AC0201JR-0782RL, and RMCF0201FT82R0 carry explicit AEC-Q200 automotive qualification. These parts are suitable for automotive-grade designs requiring formal qualification documentation. All substitute options maintain ROHS3 compliance and MSL 1 (Unlimited) moisture sensitivity rating.

Temperature Range Considerations:

Parts rated to -55°C ~ 155°C (RK73B1HTTCM820J, AC0201JR-0782RL, CRCW020182R0JNED, CRCW020182R0FKED, CRCW020182R0FNED, RMCF0201FT82R0) support the full automotive temperature specification. Parts rated to -55°C ~ 125°C (ERJ-1GNJ820C, RC0201JR-0782RL, ERJ-1GNF82R0C) are suitable for applications not requiring the extended upper temperature limit.

Frequently Asked Questions (FAQ)

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

A: Yes. Tighter tolerance specifications are functionally superior and backward compatible. A ±1% part will operate correctly in any circuit designed for ±5% tolerance. The substitution introduces no compatibility issues and improves circuit precision.

Q: Are all substitute parts available in the same 0201 package?

A: Yes. All listed substitute parts are manufactured in the 0201 (0603 Metric) package format with identical footprint dimensions (0.024" L x 0.012" W / 0.60mm x 0.30mm). PCB layout and assembly processes require no modification.

Q: What is the difference between parts with ±200ppm/°C and ±100ppm/°C temperature coefficients?

A: Temperature coefficient defines how much the resistance value changes across the operating temperature range. A ±100ppm/°C specification (CRCW020182R0FKED) provides tighter resistance stability across temperature variations compared to ±200ppm/°C parts. For most general-purpose applications, both specifications are acceptable. Select ±100ppm/°C only when circuit design explicitly requires enhanced temperature stability.

Q: Which substitute offers the best inventory availability?

A: CRCW020182R0FNED (Vishay Dale) provides the highest inventory position with 61,283 pcs in stock. This part combines ±1% tolerance, ±200ppm/°C temperature coefficient, and extended operating range (-55°C ~ 155°C) with superior supply security.

Q: Is RoHS3 compliance required for all substitutes?

A: Yes. All listed substitute parts carry ROHS3 Compliant status, matching the original RK73B1HTTC820J specification. This compliance is mandatory for regulatory requirements and supply chain standards.

Q: Can I use a substitute part rated to -55°C ~ 125°C in an application requiring -55°C ~ 155°C operation?

A: No. If your circuit design requires operation at temperatures above 125°C, select only parts with -55°C ~ 155°C operating range: RK73B1HTTCM820J, AC0201JR-0782RL, CRCW020182R0JNED, CRCW020182R0FKED, CRCW020182R0FNED, or RMCF0201FT82R0. Parts limited to 125°C maximum (ERJ-1GNJ820C, RC0201JR-0782RL, ERJ-1GNF82R0C) are not suitable for extended temperature applications.

Q: What does "Not For New Designs" status mean for the original part?

A: This designation indicates the RK73B1HTTC820J has been superseded by newer models in the manufacturer's product line. The part remains available but is no longer recommended for new circuit designs. For new designs, select from Active status alternatives such as RK73B1HTTCM820J (manufacturer recommended), CRCW020182R0JNED, or ERJ-1GNJ820C.

Q: Are moisture sensitivity levels identical across all substitutes?

A: Yes. All substitute parts carry MSL 1 (Unlimited) rating, identical to the original RK73B1HTTC820J. This specification indicates unlimited shelf life under normal storage conditions without special moisture control requirements.

Q: Which substitute is recommended for automotive applications requiring AEC-Q200 qualification?

A: RK73B1HTTCM820J (KOA Speer), AC0201JR-0782RL (YAGEO), and RMCF0201FT82R0 (Stackpole) carry explicit AEC-Q200 automotive qualification ratings. These parts are suitable for automotive-grade designs. Other substitutes do not list AEC-Q200 qualification in their specifications.

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