Equivalent & Substitute Parts for RK73B1HTTC271G

Part Overview

The RK73B1HTTC271G is a 270 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 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 The part is currently classified as "Not For New Designs," indicating it has been superseded in the product line. Identifying equivalent substitute parts is necessary to maintain design continuity, ensure supply chain availability, and support existing applications requiring this specific resistance value and package configuration.

Substiute Parts

RK73B1HTTC271G

KOA Speer Electronics, Inc.In Stock: 1090RK73B1HTTC271G Datasheet

Current PartRFQ

RK73B1HTTCM271G

KOA Speer Electronics, Inc.In Stock: 718RK73B1HTTCM271G Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the RK73B1HTTC271G is determined by strict equivalence across the following critical parameters:

Electrical Parameters:

• Resistance value: 270 Ohms (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)
• Composition: Thick Film (exact match required)

Compliance & Certification:

• Automotive AEC-Q200 qualification (required for automotive applications)
• RoHS3 compliance (required for regulatory conformance)
• Moisture Sensitivity Level 1 (required for handling and storage compatibility)

Only parts meeting all these criteria are considered true electrical and mechanical equivalents. Substitute parts must maintain identical functional performance and environmental ratings.

Parameter Comparison

Engineering Selection Recommendations

The RK73B1HTTCM271G is the direct substitute for RK73B1HTTC271G. Both parts are manufactured by KOA Speer Electronics, Inc. within the RK73B series and share identical electrical specifications, mechanical dimensions, and automotive compliance certifications.

The primary distinction is product status: RK73B1HTTC271G is classified as "Not For New Designs," while RK73B1HTTCM271G maintains "Active" status. This indicates that RK73B1HTTCM271G represents the current production equivalent and is the recommended selection for new applications requiring a 270 Ohm ±2% 0.05W 0201 automotive-grade thick film resistor.

Both parts satisfy AEC-Q200 automotive qualification requirements, ROHS3 regulatory compliance, and MSL 1 moisture sensitivity specifications. Selection between these parts should be based on design phase requirements: existing designs using RK73B1HTTC271G may continue with that part number if inventory permits; new designs should transition to RK73B1HTTCM271G for long-term supply assurance.

Frequently Asked Questions (FAQ)

Q: Can RK73B1HTTCM271G be used as a direct replacement for RK73B1HTTC271G in existing designs?

A: Yes. Both parts are electrically and mechanically identical. They share the same resistance value (270 Ohms), tolerance (±2%), power rating (0.05W), package format (0201), temperature coefficient (±200ppm/°C), operating range (-55°C ~ 155°C), and automotive AEC-Q200 certification. No circuit redesign or re-qualification is required.

Q: What is the significance of the "Not For New Designs" status on RK73B1HTTC271G?

A: This designation indicates the part has been superseded in the manufacturer's product line. While existing inventory remains available and the part continues to function identically to its active equivalent, new product designs should specify RK73B1HTTCM271G to ensure long-term supply continuity and manufacturer support.

Q: Are there any packaging differences between these two parts?

A: No. Both parts are supplied in 0201 (0603 Metric) package format with identical physical dimensions: 0.024" L x 0.012" W (0.60mm x 0.30mm) and maximum seated height of 0.010" (0.26mm). They are mechanically interchangeable on PCB layouts.

Q: Do both parts meet automotive qualification standards?

A: Yes. Both RK73B1HTTC271G and RK73B1HTTCM271G carry AEC-Q200 automotive qualification, confirming suitability for automotive applications requiring this certification level.

Q: What is the difference between the part numbers RK73B1HTTC271G and RK73B1HTTCM271G?

A: The difference is indicated by the "M" character in the middle of the second part number (HTTCM vs. HTTC). This typically denotes a manufacturing or product line revision within the same electrical and mechanical specification. Both parts are functionally equivalent.

Q: Are moisture sensitivity considerations the same for both parts?

A: Yes. Both parts carry MSL 1 (Unlimited) rating, indicating they have unlimited shelf life under normal storage conditions and require no special moisture control measures during handling or assembly.