Equivalent & Substitute Parts for RK73B1HTTC682J

Part Overview

The RK73B1HTTC682J is a 6.8 kOhms ±5% thick film chip resistor manufactured by KOA Speer Electronics, Inc., rated for 0.05W (1/20W) power dissipation in a 0201 (0603 Metric) surface mount package. This component is classified as "Not For New Designs" and carries AEC-Q200 automotive qualification with ROHS3 compliance.

Due to its obsolete design status, equivalent and substitute parts from active product lines are necessary for ongoing production, maintenance, and new design implementations. Substitute components maintain electrical and mechanical compatibility while offering improved availability and active manufacturer support.

Key Parameters

Parameter	Value	Specification Basis
Resistance	6.8 kOhms	Core electrical requirement
Tolerance	±5% (Standard) / ±1% (Upgrade)	Determines substitution category
Power Rating	0.05W (1/20W)	Thermal and electrical performance
Package / Case	0201 (0603 Metric)	Physical and mechanical compatibility
Composition	Thick Film	Material and performance characteristics
Temperature Coefficient	±200ppm/°C (Standard) / ±100ppm/°C (Upgrade)	Temperature stability performance
Operating Temperature Range	-55°C ~ 155°C (Standard) / -55°C ~ 125°C (Some alternatives)	Environmental operating limits
Terminations	2	Standard for chip resistors
RoHS Status	ROHS3 Compliant	Environmental and regulatory compliance
Moisture Sensitivity Level	1 (Unlimited)	Handling and storage requirements

Substitute Part Grouping Explanation

Substitution logic is based on the following allowed parameters:

Direct Equivalents (Same Electrical Specifications):

Resistance: 6.8 kOhms
Tolerance: ±5%
Power Rating: 0.05W (1/20W)
Package: 0201 (0603 Metric)
Composition: Thick Film
Temperature Coefficient: ±200ppm/°C
Operating Temperature: -55°C ~ 155°C (or -55°C ~ 125°C where specified)

Upgrade Substitutes (Enhanced Tolerance):

Resistance: 6.8 kOhms
Tolerance: ±1% (tighter than original ±5%)
Power Rating: 0.05W (1/20W)
Package: 0201 (0603 Metric)
Composition: Thick Film
Temperature Coefficient: ±100ppm/°C or ±200ppm/°C
Operating Temperature: -55°C ~ 155°C (or -55°C ~ 125°C where specified)

All substitute parts maintain identical package dimensions (0.024" L x 0.012" W / 0.60mm x 0.30mm), height (0.010" / 0.26mm maximum), and two-terminal configuration. All parts carry ROHS3 compliance and MSL 1 rating.

Parameter Comparison

Manufacturer Part Number	Manufacturer	Resistance	Tolerance	Power (W)	Temp Coeff (ppm/°C)	Operating Temp (°C)	Product Status	Inventory (Pcs)
RK73B1HTTC682J	KOA Speer Electronics	6.8 kΩ	±5%	0.05	±200	-55 ~ 155	Not For New Designs	26068
RK73B1HTTCM682J	KOA Speer Electronics	6.8 kΩ	±5%	0.05	±200	-55 ~ 155	Active	1054
AC0201JR-076K8L	YAGEO	6.8 kΩ	±5%	0.05	±200	-55 ~ 155	Active	1113
CRCW02016K80JNED	Vishay Dale	6.8 kΩ	±5%	0.05	±200	-55 ~ 155	Active	1158
ERJ-1GNJ682C	Panasonic Electronic Components	6.8 kΩ	±5%	0.05	±200	-55 ~ 125	Active	100640
CR0201-JW-682GLF	Bourns Inc.	6.8 kΩ	±5%	0.05	±200	-55 ~ 125	Active	874
CRCW02016K80FKED	Vishay Dale	6.8 kΩ	±1%	0.05	±100	-55 ~ 155	Active	27223
CRCW02016K80FNED	Vishay Dale	6.8 kΩ	±1%	0.05	±200	-55 ~ 155	Active	40623
ERJ-1GEF6801C	Panasonic Electronic Components	6.8 kΩ	±1%	0.05	±200	-55 ~ 125	Obsolete	1948799
ERJ-1GNF6801C	Panasonic Electronic Components	6.8 kΩ	±1%	0.05	±200	-55 ~ 125	Active	320837
MCR006YRTF6801	Rohm Semiconductor	6.8 kΩ	±1%	0.05	±250	-55 ~ 125	Discontinued at DiGi Electronics	5239

Engineering Selection Recommendations

For Direct Replacement (Identical Specifications):

Select from active product status components with matching ±5% tolerance and -55°C ~ 155°C operating range:

RK73B1HTTCM682J (KOA Speer Electronics) – Manufacturer-recommended upgrade from RK73B1HTTC682J, maintains all original specifications with active product status
AC0201JR-076K8L (YAGEO) – Direct equivalent with moisture-resistant thick film composition
CRCW02016K80JNED (Vishay Dale) – Direct equivalent with established supply chain

For applications requiring extended temperature stability to -55°C ~ 125°C:

ERJ-1GNJ682C (Panasonic Electronic Components) – Highest inventory availability (100,640 pcs), active status
CR0201-JW-682GLF (Bourns Inc.) – Active status alternative

For Upgraded Performance (±1% Tolerance):

When circuit design permits tighter tolerance specifications:

CRCW02016K80FNED (Vishay Dale) – ±1% tolerance, ±200ppm/°C, -55°C ~ 155°C operating range, highest inventory (40,623 pcs)
CRCW02016K80FKED (Vishay Dale) – ±1% tolerance, ±100ppm/°C temperature coefficient, -55°C ~ 155°C operating range (27,223 pcs available)
ERJ-1GNF6801C (Panasonic Electronic Components) – ±1% tolerance, active status, 320,837 pcs inventory

Avoid for New Designs:

ERJ-1GEF6801C (Panasonic) – Obsolete status despite high inventory
MCR006YRTF6801 (Rohm Semiconductor) – Discontinued at DiGi Electronics

All recommended substitutes maintain ROHS3 compliance, MSL 1 rating, and identical 0201 package dimensions.

Frequently Asked Questions (FAQ)

Q: Can RK73B1HTTC682J be directly replaced with RK73B1HTTCM682J?

A: Yes. RK73B1HTTCM682J is the manufacturer-recommended equivalent from KOA Speer Electronics. Both components share identical electrical specifications (6.8 kOhms ±5%, 0.05W), package (0201), composition (thick film), temperature coefficient (±200ppm/°C), and operating range (-55°C ~ 155°C). The primary difference is product status: RK73B1HTTCM682J is active, while RK73B1HTTC682J is not for new designs.

Q: What is the difference between ±5% and ±1% tolerance substitutes?

A: Tolerance defines the acceptable resistance variation from the nominal 6.8 kOhm value. ±5% tolerance allows variation between 6.46 kOhms and 7.14 kOhms. ±1% tolerance restricts variation to 6.73 kOhms and 6.87 kOhms. Upgrade substitutes with ±1% tolerance provide tighter resistance control, beneficial for precision circuits, impedance matching, or voltage divider applications. All other electrical and mechanical parameters remain compatible.

Q: Are all substitute parts compatible with the original 0201 package footprint?

A: Yes. All listed substitute parts maintain identical package dimensions: 0.024" length × 0.012" width (0.60mm × 0.30mm) and maximum seated height of 0.010" (0.26mm). All components feature two terminations in standard chip resistor configuration. PCB footprints and assembly processes require no modification.

Q: Which substitute offers the best long-term availability?

A: ERJ-1GNJ682C (Panasonic Electronic Components) demonstrates the highest inventory level at 100,640 pieces with active product status. For upgraded ±1% tolerance, CRCW02016K80FNED (Vishay Dale) offers 40,623 pieces in stock with active status and full -55°C ~ 155°C operating range.

Q: Can I use a substitute with a lower operating temperature maximum (-55°C ~ 125°C instead of -55°C ~ 155°C)?

A: Substitution is permissible only if the application's maximum operating temperature does not exceed 125°C. If the circuit requires operation above 125°C, select alternatives with -55°C ~ 155°C range: RK73B1HTTCM682J, AC0201JR-076K8L, CRCW02016K80JNED, CRCW02016K80FKED, or CRCW02016K80FNED.

Q: What is the significance of temperature coefficient (ppm/°C)?

A: Temperature coefficient indicates resistance change per degree Celsius. ±200ppm/°C means resistance changes approximately 0.02% per °C. ±100ppm/°C (CRCW02016K80FKED) provides superior temperature stability. For applications with wide temperature swings or precision requirements, lower temperature coefficient values reduce resistance drift and improve circuit performance.

Q: Are all substitutes ROHS3 compliant?

A: Yes. All listed substitute parts carry ROHS3 compliance certification. All components also maintain MSL 1 (Unlimited) moisture sensitivity level, requiring no special handling or storage conditions beyond standard component practices.

Q: Why is ERJ-1GEF6801C listed despite obsolete status?

A: ERJ-1GEF6801C is documented as an upgrade option with ±1% tolerance and 1,948,799 pieces in inventory. However, its obsolete status indicates discontinued manufacturer support. Selection should prioritize active alternatives: ERJ-1GNF6801C (same specifications, active status, 320,837 pcs) or CRCW02016K80FNED (active status, 40,623 pcs).

Q: Can I substitute a 0201 resistor with a 0603 resistor?

A: No. Package size is not interchangeable. 0201 (0603 Metric) and 0603 (1608 Metric) are different physical packages with distinct footprints, dimensions, and PCB requirements. All listed substitutes maintain the 0201 package specification for direct compatibility.

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