RK73B1HTTC332G Equivalent & Substitute Parts

Part Overview

The RK73B1HTTC332G is a 3.3 kOhms ±2% thick film chip resistor in 0201 package format, rated for 0.05W (1/20W) power dissipation. This component is manufactured by KOA Speer Electronics, Inc. and meets automotive 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 The part is currently classified as "Not For New Designs," indicating it has been superseded in the manufacturer's product line.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 ensure design continuity, maintain supply chain reliability, and transition to active product status where applicable.

Substiute Parts

RK73B1HTTC332G

KOA Speer Electronics, Inc.In Stock: 1044RK73B1HTTC332G Datasheet

Current PartRFQ

RK73B1HTTCM332G

KOA Speer Electronics, Inc.In Stock: 1184RK73B1HTTCM332G Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the RK73B1HTTC332G is determined by strict equivalence across the following critical parameters:

Electrical Parameters (Non-Negotiable):

• Resistance value: 3.3 kOhms (exact match required)
• Tolerance: ±2% (substitute must not exceed this tolerance)
• Power rating: 0.05W minimum (equal or higher acceptable)
• Temperature coefficient: ±200ppm/°C (equal or superior required)
• Operating temperature range: -55°C to 155°C (must encompass or exceed)

Physical Parameters (Non-Negotiable):

• Package format: 0201 (0603 Metric) - required for PCB footprint compatibility
• Composition: Thick Film - determines frequency response and noise characteristics
• Termination count: 2 (standard for chip resistors)

Compliance & Certification (Application-Dependent):

• AEC-Q200 automotive qualification - required for automotive applications
• RoHS3 compliance - required for regulatory adherence
• MSL rating: 1 (Unlimited) - acceptable for standard handling

Product Status Consideration: Substitutes with "Active" product status are preferred over "Not For New Designs" classifications to ensure long-term supply availability and manufacturer support.

Parameter Comparison

Engineering Selection Recommendations

Primary Recommendation: RK73B1HTTCM332G

The RK73B1HTTCM332G is a direct electrical and mechanical equivalent to the RK73B1HTTC332G. Both components are manufactured by KOA Speer Electronics, Inc., within the same RK73B series, and share identical specifications across all critical parameters: resistance value, tolerance, power rating, package format, temperature coefficient, and operating temperature range.

The key distinction is product status: RK73B1HTTCM332G carries "Active" classification, indicating ongoing manufacturer support and long-term availability. The RK73B1HTTC332G is designated "Not For New Designs," signaling end-of-life status within the manufacturer's portfolio.

Both parts maintain full AEC-Q200 automotive qualification and ROHS3 compliance, making them suitable for automotive and regulated applications. The substitute part demonstrates higher inventory availability (1095 Pcs versus 935 Pcs), supporting supply chain continuity.

Selection Criteria:

• For new designs or long-term production: Select RK73B1HTTCM332G
• For legacy system maintenance: Either part is electrically and mechanically interchangeable
• For automotive applications: Both parts satisfy AEC-Q200 requirements
• For regulated environments: Both parts meet ROHS3 compliance

Frequently Asked Questions (FAQ)

Q1: Can RK73B1HTTCM332G be used as a direct replacement for RK73B1HTTC332G in existing designs?

A: Yes. Both components are electrically and mechanically identical. They share the same resistance value (3.3 kOhms), tolerance (±2%), power rating (0.05W), package format (0201), temperature coefficient (±200ppm/°C), and operating temperature range (-55°C to 155°C). PCB footprints, solder reflow profiles, and circuit performance are unchanged.

Q2: Why is RK73B1HTTC332G marked "Not For New Designs"?

A: This designation indicates the part has reached end-of-life status in the manufacturer's product roadmap. KOA Speer Electronics, Inc. has transitioned this specification to the RK73B1HTTCM332G variant, which carries "Active" status. New designs should incorporate the active substitute to ensure long-term supply availability and manufacturer support.

Q3: Are there any compliance or certification differences between the two parts?

A: No. Both components maintain identical AEC-Q200 automotive qualification, ROHS3 compliance, and MSL rating (1 - Unlimited). Regulatory and certification requirements are fully satisfied by either part.

Q4: What is the significance of the "M" designation in RK73B1HTTCM332G?

A: The "M" in the part number indicates a variant within the RK73B series. In this case, it represents the active production version of the specification. The electrical and mechanical characteristics remain unchanged from the original RK73B1HTTC332G.

Q5: Can I mix RK73B1HTTC332G and RK73B1HTTCM332G in the same production batch?

A: Yes. Both parts are fully interchangeable from electrical, mechanical, and compliance perspectives. However, for supply chain consistency and traceability, it is standard practice to standardize on a single part number per design revision.

Q6: What is the difference in packaging between the two parts?

A: Both components use identical 0201 (0603 Metric) package format. The main part specifies "Tape & Reel (TR)" packaging, while the substitute part does not specify packaging format in the provided data. Confirm packaging requirements with the supplier for procurement purposes.

Q7: Is the temperature coefficient specification critical for substitution?

A: Yes. The temperature coefficient (±200ppm/°C) determines resistance drift across the operating temperature range. Both parts share identical specifications, ensuring equivalent performance in temperature-sensitive applications. Substitutes with superior (lower) temperature coefficients are acceptable; those with inferior (higher) coefficients are not.

Q8: Are there any lead time or availability advantages to selecting the substitute part?

A: The RK73B1HTTCM332G demonstrates higher current inventory (1095 Pcs versus 935 Pcs) and carries "Active" product status, indicating ongoing production. These factors typically correlate with shorter lead times and more stable long-term availability compared to "Not For New Designs" parts.