RK73H1HTTC1740D Equivalent & Substitute Parts

Part Overview

The RK73H1HTTC1740D is a 174 Ohm ±0.5% chip resistor manufactured by KOA Speer Electronics, Inc., rated at 0.05W (1/20W) in 0201 package format. This component is a thick film, automotive-grade resistor compliant with AEC-Q200 standards and features moisture-resistant construction suitable for demanding automotive applications.

The RK73H1HTTC1740D carries a product status of "Not For New Designs," indicating it has been superseded in the manufacturer's active product line. Organizations requiring this component specification for new or ongoing production must identify equivalent alternatives that maintain electrical and mechanical compatibility while utilizing current, actively supported part numbers.

Substiute Parts

RK73H1HTTC1740D

KOA Speer Electronics, Inc.In Stock: 743RK73H1HTTC1740D Datasheet

Current PartRFQ

RK73H1HTTCM1740D

KOA Speer Electronics, Inc.In Stock: 777RK73H1HTTCM1740D Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the RK73H1HTTC1740D is determined by strict equivalence across the following critical parameters:

Electrical Parameters:

• Resistance value: 174 Ohms (exact match required)
• Tolerance: ±0.5% (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 rating: AEC-Q200 (exact match required)
• RoHS compliance: ROHS3 Compliant (exact match required)
• Moisture sensitivity: MSL 1 (exact match required)

Substitute parts must match all parameters listed above. Deviations in any parameter disqualify a part from substitution consideration.

Parameter Comparison

Engineering Selection Recommendations

The RK73H1HTTCM1740D is the direct equivalent substitute for the RK73H1HTTC1740D. Both components are manufactured by KOA Speer Electronics, Inc., and share identical electrical specifications, mechanical dimensions, and automotive compliance certifications.

The primary distinction between these parts is product lifecycle status: the original RK73H1HTTC1740D is designated "Not For New Designs," while the RK73H1HTTCM1740D maintains "Active" status within the manufacturer's current product portfolio. This status change reflects the manufacturer's ongoing support and availability commitment for the substitute part.

Both parts satisfy AEC-Q200 automotive qualification requirements, ROHS3 compliance mandates, and MSL 1 moisture sensitivity specifications. Electrical performance, thermal characteristics, and mechanical compatibility are identical across all specified parameters.

For applications currently utilizing RK73H1HTTC1740D, transition to RK73H1HTTCM1740D is supported by complete parameter equivalence and active manufacturer support status.

Frequently Asked Questions (FAQ)

Q: What is the difference between RK73H1HTTC1740D and RK73H1HTTCM1740D?

A: Both parts are electrically and mechanically identical 174 Ohm ±0.5% chip resistors in 0201 package format with AEC-Q200 automotive certification. The primary difference is product status: RK73H1HTTC1740D is "Not For New Designs," while RK73H1HTTCM1740D is "Active" in the manufacturer's current product line.

Q: Can RK73H1HTTCM1740D be used as a direct replacement for RK73H1HTTC1740D?

A: Yes. All electrical parameters (resistance, tolerance, power rating, temperature coefficient, operating temperature range), mechanical specifications (0201 package, thick film composition), and compliance certifications (AEC-Q200, ROHS3, MSL 1) are identical between the two parts.

Q: Are there any packaging differences between these parts?

A: No. Both parts utilize 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).

Q: What does "Not For New Designs" mean for the RK73H1HTTC1740D?

A: This designation indicates the part has been superseded in the manufacturer's active product line. While existing inventory may remain available, the manufacturer recommends using the active equivalent (RK73H1HTTCM1740D) for new designs and ongoing production to ensure long-term supply continuity and manufacturer support.

Q: Are both parts compliant with automotive standards?

A: Yes. Both RK73H1HTTC1740D and RK73H1HTTCM1740D carry AEC-Q200 automotive qualification, confirming suitability for automotive applications requiring reliability and quality assurance standards.

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

A: Both parts are rated MSL 1 (Unlimited), indicating no moisture sensitivity restrictions and unlimited shelf life under standard storage conditions.