RK73B1HTTC131J Equivalent & Substitute Parts

Part Overview

The RK73B1HTTC131J is a 130 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 with AEC-Q200 qualification and operates across -55°C to 155°C. The part carries a "Not For New Designs" status, indicating it has been superseded in the manufacturer's product line.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	130 Ohms	Must match exactly for direct substitution
Tolerance	±5%	Defines acceptable resistance variation; tighter tolerance (±1%) is an upgrade
Power Rating	0.05W (1/20W)	Must match or exceed for thermal compatibility
Package / Case	0201 (0603 Metric)	Physical footprint; must match for PCB compatibility
Composition	Thick Film	Determines electrical characteristics and temperature behavior
Temperature Coefficient	±200ppm/°C	Defines resistance drift over operating temperature range
Operating Temperature Range	-55°C ~ 155°C	Must support application temperature requirements
Automotive Rating	AEC-Q200	Certifies suitability for automotive applications
RoHS Compliance	ROHS3 Compliant	Environmental and regulatory requirement
Moisture Sensitivity Level	MSL 1 (Unlimited)	Indicates no moisture sensitivity restrictions

Substitute Part Grouping Explanation

Substitute parts for the RK73B1HTTC131J are categorized based on electrical and mechanical compatibility:

Direct Equivalents (Same Specifications): Parts matching all critical parameters—130 Ohms resistance, ±5% tolerance, 0.05W power rating, 0201 package, thick film composition, and ±200ppm/°C temperature coefficient—are classified as direct substitutes. These parts maintain identical electrical performance and thermal characteristics.

Manufacturer Recommended Equivalent: RK73B1HTTCM131J from KOA Speer Electronics represents the active product line successor to the obsolete RK73B1HTTC131J. This part carries identical electrical specifications and is the preferred replacement for new procurement.

Upgraded Tolerance Parts (±1%): Parts with ±1% tolerance instead of ±5% represent performance upgrades. These maintain the same 130 Ohm resistance, 0.05W power rating, and 0201 package but offer tighter tolerance and typically lower temperature coefficient (±100ppm/°C in some cases). These are suitable for applications requiring higher precision.

Cross-Manufacturer Substitutes: Direct equivalents from manufacturers including YAGEO, Vishay Dale, Panasonic Electronic Components, and Stackpole Electronics Inc. provide alternative sourcing while maintaining identical or superior specifications.

Key Parameters Determining Substitution:

Resistance value: 130 Ohms (exact match required)
Tolerance: ±5% minimum (±1% acceptable as upgrade)
Power rating: 0.05W minimum
Package: 0201 (0603 Metric) mandatory
Composition: Thick film required
Temperature range: -55°C to 155°C minimum
RoHS3 compliance required

Parameter Comparison

Part Number	Manufacturer	Resistance	Tolerance	Power (W)	Temp Coeff (ppm/°C)	Temp Range (°C)	Package	Status	Inventory (Pcs)
RK73B1HTTC131J	KOA Speer	130 Ω	±5%	0.05	±200	-55 ~ 155	0201	Not For New Designs	1071
RK73B1HTTCM131J	KOA Speer	130 Ω	±5%	0.05	±200	-55 ~ 155	0201	Active	857
AC0201JR-07130RL	YAGEO	130 Ω	±5%	0.05	±200	-55 ~ 155	0201	Active	1132
CRCW0201130RJNED	Vishay Dale	130 Ω	±5%	0.05	±200	-55 ~ 155	0201	Active	30291
ERJ-1GNJ131C	Panasonic	130 Ω	±5%	0.05	±200	-55 ~ 125	0201	Active	83962
RC0201JR-07130RL	YAGEO	130 Ω	±5%	0.05	±200	-55 ~ 125	0201	Active	964
CRCW0201130RFKED	Vishay Dale	130 Ω	±1%	0.05	±100	-55 ~ 155	0201	Active	7916
CRCW0201130RFNED	Vishay Dale	130 Ω	±1%	0.05	±200	-55 ~ 155	0201	Active	1001
ERJ-1GNF1300C	Panasonic	130 Ω	±1%	0.05	±200	-55 ~ 125	0201	Active	139948
RMCF0201FT130R	Stackpole	130 Ω	±1%	0.05	±200	-55 ~ 155	0201	Active	799

Engineering Selection Recommendations

For Direct Replacement (Identical Specifications):

Select RK73B1HTTCM131J as the primary replacement. This part is the active product line equivalent from the original manufacturer KOA Speer Electronics, maintaining all electrical and thermal specifications of the obsolete RK73B1HTTC131J. Both parts carry AEC-Q200 automotive qualification, ROHS3 compliance, and MSL 1 rating.

For cross-manufacturer sourcing with identical specifications, the following parts are qualified substitutes:

CRCW0201130RJNED (Vishay Dale): 30,291 units in stock, highest inventory availability
ERJ-1GNJ131C (Panasonic): 83,962 units in stock, largest available inventory
AC0201JR-07130RL (YAGEO): 1,132 units in stock, includes moisture-resistant features
RC0201JR-07130RL (YAGEO): 964 units in stock, includes moisture-resistant features

For Upgraded Performance (±1% Tolerance):

When circuit design permits tighter tolerance specifications, the following ±1% tolerance parts provide enhanced precision:

CRCW0201130RFNED (Vishay Dale): 1,001 units in stock, ±200ppm/°C temperature coefficient, -55°C to 155°C range
CRCW0201130RFKED (Vishay Dale): 7,916 units in stock, ±100ppm/°C temperature coefficient, -55°C to 155°C range
ERJ-1GNF1300C (Panasonic): 139,948 units in stock, largest inventory for ±1% option
RMCF0201FT130R (Stackpole): 799 units in stock, AEC-Q200 rated, -55°C to 155°C range

Temperature Range Considerations:

Parts with -55°C to 125°C operating range (ERJ-1GNJ131C, RC0201JR-07130RL, ERJ-1GNF1300C) are suitable for applications not exceeding 125°C. Applications requiring full -55°C to 155°C range must use parts explicitly rated to 155°C.

Compliance and Certification:

All recommended substitutes maintain ROHS3 compliance and MSL 1 rating. Parts with AEC-Q200 automotive qualification (RK73B1HTTCM131J, AC0201JR-07130RL, RMCF0201FT130R) are required for automotive applications.

Frequently Asked Questions (FAQ)

Q: Can I use a ±1% tolerance part as a direct replacement for the ±5% RK73B1HTTC131J?

A: Yes. The ±1% tolerance parts (CRCW0201130RFNED, CRCW0201130RFKED, ERJ-1GNF1300C, RMCF0201FT130R) are electrically compatible and represent performance upgrades. They maintain the same 130 Ohm resistance and 0.05W power rating in 0201 package. The tighter tolerance provides improved precision without compromising circuit functionality.

Q: What is the difference between RK73B1HTTC131J and RK73B1HTTCM131J?

A: Both parts are electrically and mechanically identical with 130 Ohms ±5%, 0.05W, 0201 package, and -55°C to 155°C operating range. The primary difference is product status: RK73B1HTTC131J is obsolete ("Not For New Designs"), while RK73B1HTTCM131J is the active replacement from KOA Speer Electronics. For new designs and ongoing production, RK73B1HTTCM131J is the recommended choice.

Q: Are all substitute parts suitable for automotive applications?

A: Not all. Only parts explicitly rated AEC-Q200 are qualified for automotive use: RK73B1HTTCM131J, AC0201JR-07130RL, and RMCF0201FT130R. Other parts (CRCW0201130RJNED, ERJ-1GNJ131C, RC0201JR-07130RL, CRCW0201130RFKED, CRCW0201130RFNED, ERJ-1GNF1300C) lack automotive certification and should not be used in automotive applications unless the circuit design does not require AEC-Q200 compliance.

Q: What is the inventory status for each substitute?

A: ERJ-1GNJ131C has the highest inventory at 83,962 units. CRCW0201130RJNED offers 30,291 units. ERJ-1GNF1300C (±1% upgrade) has 139,948 units available. RK73B1HTTCM131J (recommended equivalent) has 857 units. RMCF0201FT130R has 799 units. Remaining parts range from 964 to 7,916 units.

Q: Can I use parts with -55°C to 125°C range instead of -55°C to 155°C?

A: Only if your application does not exceed 125°C. ERJ-1GNJ131C, RC0201JR-07130RL, and ERJ-1GNF1300C are rated to 125°C maximum. For applications requiring the full 155°C upper limit, use parts explicitly rated -55°C to 155°C: RK73B1HTTCM131J, AC0201JR-07130RL, CRCW0201130RJNED, CRCW0201130RFKED, CRCW0201130RFNED, or RMCF0201FT130R.

Q: What does MSL 1 (Unlimited) mean for moisture sensitivity?

A: MSL 1 indicates the component has no moisture sensitivity restrictions. These parts do not require special moisture-controlled storage or handling procedures and can be stored under standard conditions without desiccant packaging requirements.

Q: Are YAGEO AC0201JR-07130RL and RC0201JR-07130RL different parts?

A: Yes. AC0201JR-07130RL includes moisture-resistant features and AEC-Q200 automotive qualification. RC0201JR-07130RL includes moisture-resistant features but lacks AEC-Q200 rating. Both are ±5% tolerance, 0.05W, 0201 package from YAGEO with -55°C to 125°C operating range. AC0201JR-07130RL is preferred for automotive applications.

Q: What is the temperature coefficient and why does it matter?

A: Temperature coefficient (±200ppm/°C or ±100ppm/°C) defines how much the resistance changes per degree Celsius. Most substitutes have ±200ppm/°C. CRCW0201130RFKED offers ±100ppm/°C, providing better stability across temperature extremes. For precision analog circuits, lower temperature coefficient is beneficial.

Q: Can I mix different manufacturers' parts in the same design?

A: Yes. All recommended substitutes maintain identical electrical specifications (130 Ohms ±5%, 0.05W, 0201 package) and are mechanically compatible. Cross-manufacturer substitution is standard practice for component sourcing and supply chain management. Ensure all parts meet required certifications (AEC-Q200 for automotive applications).

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