Equivalent & Substitute Parts for RK73B1HTTC273J

Part Overview

The RK73B1HTTC273J is a 27 kOhm ±5% thick film chip resistor rated at 0.05W (1/20W) in 0201 package format (0.60mm × 0.30mm metric). Manufactured by KOA Speer Electronics, Inc., this component is AEC-Q200 automotive qualified and RoHS3 compliant. The part is designated as "Not For New Designs," indicating it has been superseded. 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
Resistance	27 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 × 0.012" W (0.60mm × 0.30mm)
Height - Seated (Max)	0.010" (0.26mm)
Moisture Sensitivity Level (MSL)	1 (Unlimited)
RoHS Status	ROHS3 Compliant
REACH Status	REACH Unaffected

Substitute Part Grouping Explanation

Substitution of the RK73B1HTTC273J is determined by strict equivalence across the following critical parameters:

Primary Substitution Criteria:

Resistance value: 27 kOhms (exact match required)
Tolerance: ±5% minimum (±1% tolerance parts are upgrades)
Power rating: 0.05W (1/20W) minimum
Package: 0201 (0603 Metric) form factor
Composition: Thick film construction
Temperature coefficient: ±200ppm/°C or better
Operating temperature range: -55°C to 155°C minimum (or -55°C to 125°C for limited-range alternatives)
Moisture sensitivity: MSL 1 (Unlimited)
Regulatory compliance: RoHS3 and REACH Unaffected

Substitution Categories:

Direct Equivalents (±5% Tolerance): Parts meeting all primary criteria with identical tolerance specification. These include RK73B1HTTCM273J (KOA Speer, Active status), AC0201JR-0727KL (YAGEO), CRCW020127K0JNED (Vishay Dale), ERJ-1GNJ273C (Panasonic), and RC0201JR-0727KL (YAGEO).

Upgrade Parts (±1% Tolerance): Parts with superior tolerance specification (±1% vs. ±5%) while maintaining all other electrical and mechanical parameters. These include CRCW020127K0FKED, CRCW020127K0FNED (both Vishay Dale), and ERJ-1GNF2702C (Panasonic). Upgrades provide tighter tolerance performance in the same package footprint.

Parameter Comparison

Manufacturer Part Number	Manufacturer	Resistance	Tolerance	Power (W)	Temp Coeff (ppm/°C)	Operating Temp (°C)	Package	Product Status	Inventory (Pcs)
RK73B1HTTC273J	KOA Speer	27 kΩ	±5%	0.05	±200	-55 ~ 155	0201	Not For New Designs	6929
RK73B1HTTCM273J	KOA Speer	27 kΩ	±5%	0.05	±200	-55 ~ 155	0201	Active	1000
AC0201JR-0727KL	YAGEO	27 kΩ	±5%	0.05	±200	-55 ~ 155	0201	Active	762
CRCW020127K0JNED	Vishay Dale	27 kΩ	±5%	0.05	±200	-55 ~ 155	0201	Active	7027
ERJ-1GNJ273C	Panasonic	27 kΩ	±5%	0.05	±200	-55 ~ 125	0201	Active	28348
RC0201JR-0727KL	YAGEO	27 kΩ	±5%	0.05	±200	-55 ~ 125	0201	Active	1037
CRCW020127K0FKED	Vishay Dale	27 kΩ	±1%	0.05	±100	-55 ~ 155	0201	Active	27308
CRCW020127K0FNED	Vishay Dale	27 kΩ	±1%	0.05	±200	-55 ~ 155	0201	Active	26879
ERJ-1GNF2702C	Panasonic	27 kΩ	±1%	0.05	±200	-55 ~ 125	0201	Active	63103

Engineering Selection Recommendations

For Direct Replacement (Equivalent Performance):

Select from active-status direct equivalents when maintaining existing design specifications. RK73B1HTTCM273J (KOA Speer) is the manufacturer-recommended upgrade path, offering identical electrical and mechanical specifications with active product status. CRCW020127K0JNED (Vishay Dale) provides the highest inventory availability among direct equivalents at 7027 pieces. ERJ-1GNJ273C (Panasonic) offers substantial inventory depth at 28348 pieces, supporting high-volume production requirements.

For Enhanced Performance (Tolerance Upgrade):

When circuit design permits tighter tolerance specifications, upgrade to ±1% tolerance parts. CRCW020127K0FNED (Vishay Dale) maintains ±200ppm/°C temperature coefficient and -55°C to 155°C operating range with 26879 pieces in stock. CRCW020127K0FKED (Vishay Dale) provides superior ±100ppm/°C temperature coefficient with 27308 pieces available. ERJ-1GNF2702C (Panasonic) offers ±1% tolerance with 63103 pieces in inventory, supporting applications requiring precision resistor networks.

Compliance Considerations:

All substitute parts maintain RoHS3 compliance and REACH Unaffected status, ensuring regulatory alignment with the original RK73B1HTTC273J. Moisture sensitivity level remains MSL 1 (Unlimited) across all alternatives, eliminating moisture-related handling constraints.

Temperature Range Limitations:

ERJ-1GNJ273C and RC0201JR-0727KL operate to -55°C to 125°C, providing 30°C less upper temperature margin than the original specification. These parts are suitable for applications not requiring the full -55°C to 155°C range. For designs requiring the complete temperature envelope, select from KOA Speer, YAGEO AC series, or Vishay Dale CRCW series alternatives.

Frequently Asked Questions (FAQ)

Q: Can ERJ-1GNJ273C replace RK73B1HTTC273J in all applications?

A: ERJ-1GNJ273C is electrically equivalent for resistance, tolerance, power rating, and composition. However, it operates to 125°C maximum versus 155°C for the original part. Substitution is valid only for applications not exceeding 125°C ambient or component temperature.

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

A: Direct equivalents (±5% tolerance) maintain identical specifications to RK73B1HTTC273J. Upgrade parts (±1% tolerance) provide tighter tolerance performance, reducing resistance value variation. Upgrades are electrically compatible but offer superior precision for applications requiring closer tolerance control.

Q: Is RK73B1HTTCM273J a direct replacement for RK73B1HTTC273J?

A: Yes. RK73B1HTTCM273J is the active-status equivalent from the same manufacturer (KOA Speer), with identical electrical specifications, package dimensions, and operating parameters. It is the manufacturer-recommended upgrade path.

Q: Which substitute part has the highest inventory availability?

A: ERJ-1GNJ273C (Panasonic) provides the highest inventory at 28348 pieces. For upgrade-tolerance parts, ERJ-1GNF2702C (Panasonic) offers 63103 pieces in stock.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All listed substitute parts maintain RoHS3 compliance and REACH Unaffected status, matching the regulatory profile of RK73B1HTTC273J.

Q: Can I use CRCW020127K0FKED instead of CRCW020127K0FNED?

A: Both are ±1% tolerance upgrades in the same package. CRCW020127K0FKED features ±100ppm/°C temperature coefficient, while CRCW020127K0FNED maintains ±200ppm/°C. Selection depends on temperature stability requirements. Both operate across -55°C to 155°C.

Q: What does MSL 1 (Unlimited) mean for component handling?

A: MSL 1 (Unlimited) indicates no moisture sensitivity restrictions. Components do not require special dry-pack storage, desiccant handling, or bake-out procedures before soldering. All substitute parts share this classification with the original part.

Q: Are YAGEO AC0201JR-0727KL and RC0201JR-0727KL interchangeable?

A: Both are YAGEO 27 kOhm ±5% 0201 resistors with identical electrical specifications. AC0201JR-0727KL includes AEC-Q200 automotive qualification and moisture resistance. RC0201JR-0727KL includes moisture resistance but lacks explicit AEC-Q200 rating. For automotive applications, AC0201JR-0727KL is preferred.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message