RK73B1HTTC683G Equivalent & Substitute Parts

Part Overview

The RK73B1HTTC683G is a 68 kOhms ±2% thick film chip resistor rated at 0.05W (1/20W) in 0201 package format (0.60mm x 0.30mm metric). This component is manufactured by KOA Speer Electronics, Inc. and meets AEC-Q200 automotive qualification standards. The part is currently classified as Not For New Designs, necessitating identification of active equivalent alternatives that maintain identical electrical and mechanical specifications for ongoing production and maintenance applications.

Substiute Parts

RK73B1HTTC683G

KOA Speer Electronics, Inc.In Stock: 1179RK73B1HTTC683G Datasheet

Current PartRFQ

RK73B1HTTCM683G

KOA Speer Electronics, Inc.In Stock: 1002RK73B1HTTCM683G Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the RK73B1HTTC683G is determined by strict equivalence across the following critical parameters:

Electrical Parameters:

• Resistance value: 68 kOhms (exact match required)
• Tolerance: ±2% (exact match required)
• Power rating: 0.05W / 1/20W (exact match required)
• Temperature coefficient: ±200ppm/°C (exact match required)
• Operating temperature range: -55°C ~ 155°C (exact match required)

Mechanical Parameters:

• Package format: 0201 (0603 Metric) (exact match required)
• Physical dimensions: 0.024" L x 0.012" W / 0.60mm x 0.30mm (exact match required)
• Height seated maximum: 0.010" / 0.26mm (exact match required)
• Termination count: 2 (exact match required)

Compliance & Quality Parameters:

• Composition: Thick Film (exact match required)
• Automotive qualification: AEC-Q200 (exact match required)
• RoHS compliance: ROHS3 Compliant (exact match required)
• Moisture sensitivity: MSL 1 (exact match required)

Substitute parts must satisfy all parameters listed above without deviation. Parts meeting these criteria are functionally and mechanically interchangeable in applications designed for RK73B1HTTC683G.

Parameter Comparison

Engineering Selection Recommendations

The RK73B1HTTCM683G serves as the direct equivalent substitute for RK73B1HTTC683G. Both components are manufactured by KOA Speer Electronics, Inc. within the RK73B series and maintain complete electrical and mechanical parameter equivalence.

Selection Basis:

The primary distinction between the main part and substitute is product lifecycle status. RK73B1HTTC683G is designated Not For New Designs, indicating end-of-life or transition status. RK73B1HTTCM683G carries Active product status, confirming current manufacturing availability and ongoing support from the manufacturer.

All electrical specifications are identical: 68 kOhms resistance, ±2% tolerance, 0.05W power rating, ±200ppm/°C temperature coefficient, and -55°C to 155°C operating range. Mechanical compatibility is complete: both components utilize 0201 (0603 Metric) package format with identical physical dimensions (0.60mm x 0.30mm length and width, 0.26mm maximum seated height).

Compliance certifications are equivalent: both parts meet AEC-Q200 automotive qualification, ROHS3 compliance, and MSL 1 moisture sensitivity rating. These certifications ensure suitability for automotive and high-reliability applications without modification to existing designs.

For applications currently utilizing RK73B1HTTC683G, direct substitution with RK73B1HTTCM683G is supported without circuit redesign, PCB layout modification, or performance degradation.

Frequently Asked Questions (FAQ)

Q: Can RK73B1HTTCM683G be used as a direct replacement for RK73B1HTTC683G in existing designs?

A: Yes. Both components are electrically and mechanically identical. All specifications including resistance value, tolerance, power rating, temperature coefficient, operating temperature range, package dimensions, and automotive certifications match exactly. Direct substitution is supported without design modification.

Q: What is the significance of the product status difference between the two parts?

A: RK73B1HTTC683G is classified as Not For New Designs, indicating the part is in end-of-life or transition phase. RK73B1HTTCM683G is Active, confirming current manufacturing and ongoing availability. For new production and long-term supply assurance, RK73B1HTTCM683G is the appropriate selection.

Q: Are the package formats identical between these parts?

A: Yes. Both components use 0201 package format (0603 Metric designation). Physical dimensions are identical: 0.024" length x 0.012" width (0.60mm x 0.30mm), with maximum seated height of 0.010" (0.26mm). PCB footprints and assembly processes are interchangeable.

Q: Do both parts meet automotive qualification requirements?

A: Yes. Both RK73B1HTTC683G and RK73B1HTTCM683G carry AEC-Q200 automotive qualification rating. Both are ROHS3 compliant and rated MSL 1 (Unlimited moisture sensitivity level). Both are suitable for automotive and high-reliability applications.

Q: What is the temperature coefficient specification, and is it identical for both parts?

A: The temperature coefficient for both parts is ±200ppm/°C. This specification defines the resistance change per degree Celsius across the operating temperature range of -55°C to 155°C. Identical temperature coefficients ensure equivalent performance stability across temperature variations.

Q: Is there any difference in the thick film composition between these parts?

A: No. Both components are thick film resistors with identical composition. Thick film technology provides the specified tolerance (±2%), temperature coefficient (±200ppm/°C), and reliability characteristics required for automotive applications.

Q: What inventory status should be considered when selecting between these parts?

A: RK73B1HTTC683G has 1130 pieces in stock. RK73B1HTTCM683G has 967 pieces in stock. Both are available as new original components. For long-term supply planning, the Active status of RK73B1HTTCM683G provides greater assurance of continued availability beyond current inventory levels.