RK73B1HTTC431G Equivalent & Substitute Parts

Part Overview

The RK73B1HTTC431G is a 430 Ohm ±2% thick film chip resistor rated at 0.05W (1/20W) in 0201 package format (0.60mm x 0.30mm metric). This component is designed for automotive applications and meets AEC-Q200 qualification standards. The part is currently classified as "Not For New Designs," indicating it has been superseded in the manufacturer's product line. Identifying equivalent substitute parts is necessary to maintain design continuity, ensure supply chain availability, and support existing production requirements.

Substiute Parts

RK73B1HTTC431G

KOA Speer Electronics, Inc.In Stock: 1160RK73B1HTTC431G Datasheet

Current PartRFQ

RK73B1HTTCM431G

KOA Speer Electronics, Inc.In Stock: 888RK73B1HTTCM431G Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the RK73B1HTTC431G is determined by strict alignment with the following electrical and mechanical parameters:

Critical Parameters (Must Match Exactly):

• Resistance value: 430 Ohms
• Package format: 0201 (0603 Metric)
• Tolerance: ±2%
• Power rating: 0.05W minimum
• Composition: Thick Film
• Automotive qualification: AEC-Q200

Compliance Parameters (Must Maintain or Exceed):

• Operating temperature range: -55°C ~ 155°C minimum
• Temperature coefficient: ±200ppm/°C maximum
• RoHS status: ROHS3 Compliant
• Moisture sensitivity: MSL 1 (Unlimited)

Substitute parts must satisfy all critical parameters identically and maintain or exceed all compliance parameters. Parts that deviate in resistance value, package size, tolerance, or automotive rating are not considered equivalent.

Parameter Comparison

Engineering Selection Recommendations

RK73B1HTTCM431G is the direct equivalent substitute for RK73B1HTTC431G.

Basis for Selection:

The RK73B1HTTCM431G maintains identical electrical specifications, mechanical dimensions, and automotive compliance ratings as the original part. All critical parameters—resistance value, tolerance, power rating, package format, and AEC-Q200 qualification—are matched exactly. The substitute part is manufactured by the same supplier (KOA Speer Electronics, Inc.) within the same RK73B series.

Key Advantage:

The substitute part carries an "Active" product status, whereas the original is designated "Not For New Designs." This transition indicates that RK73B1HTTCM431G represents the current production equivalent and is the recommended selection for ongoing applications requiring 430 Ohm ±2% 0.05W 0201 automotive-grade thick film resistors.

Compliance Confirmation:

Both parts maintain ROHS3 compliance, REACH unaffected status, and MSL 1 moisture sensitivity rating. No design modifications or circuit re-evaluation are required when substituting RK73B1HTTCM431G for RK73B1HTTC431G.

Frequently Asked Questions (FAQ)

Q: Can RK73B1HTTCM431G be used as a direct replacement for RK73B1HTTC431G without circuit modification?

A: Yes. The substitute part is electrically and mechanically identical. All parameters including resistance, tolerance, power rating, package dimensions, and automotive qualification match exactly. No circuit changes are required.

Q: What is the difference between these two part numbers?

A: The primary difference is product status. RK73B1HTTC431G is classified as "Not For New Designs," indicating it has been superseded. RK73B1HTTCM431G is the active equivalent from the same manufacturer and series. The "M" designation in the part number reflects the updated production variant.

Q: Are the physical dimensions identical?

A: Yes. Both parts are 0201 package format (0.60mm x 0.30mm metric) with identical length, width, and maximum seated height specifications. PCB footprints and assembly processes remain unchanged.

Q: Do both parts meet automotive AEC-Q200 requirements?

A: Yes. Both RK73B1HTTC431G and RK73B1HTTCM431G carry AEC-Q200 qualification and are suitable for automotive applications within the specified operating temperature range of -55°C to 155°C.

Q: Is there any difference in tolerance or temperature coefficient?

A: No. Both parts maintain ±2% tolerance and ±200ppm/°C temperature coefficient. Electrical performance characteristics are identical.

Q: What is the moisture sensitivity level for these parts?

A: Both parts are rated MSL 1 (Unlimited), indicating no moisture sensitivity restrictions. Standard handling and storage procedures apply.

Q: Are there any RoHS or REACH compliance differences?

A: No. Both parts are ROHS3 compliant and REACH unaffected. Regulatory compliance is identical.

Q: Why should I transition from RK73B1HTTC431G to RK73B1HTTCM431G?

A: The original part is no longer recommended for new designs. Transitioning to RK73B1HTTCM431G ensures access to active production inventory, ongoing manufacturer support, and long-term supply chain stability. The substitute provides identical performance with the advantage of current product status.