RK73H1HTTC5103F Equivalent & Substitute Parts

Part Overview

The RK73H1HTTC5103F is a 510 kOhms ±1% thick film chip resistor manufactured by KOA Speer Electronics, Inc., rated at 0.05W (1/20W) in a 0201 (0603 Metric) package. This component meets AEC-Q200 automotive qualification standards and incorporates moisture-resistant construction suitable for automotive and industrial applications operating across -55°C to 155°C.

The RK73H1HTTC5103F carries a "Not For New Designs" product status, indicating that KOA Speer Electronics has transitioned this part to end-of-life. Identifying equivalent and substitute parts is necessary to maintain design continuity, support existing production runs, and ensure long-term supply chain reliability for applications currently utilizing this component.

Substiute Parts

RK73H1HTTC5103F

KOA Speer Electronics, Inc.In Stock: 28761RK73H1HTTC5103F Datasheet

Current PartRFQ

RK73H1HTTCM5103F

KOA Speer Electronics, Inc.In Stock: 784RK73H1HTTCM5103F Datasheet

MFR RecommendedRFQ

AC0201FR-07510KL

YAGEOIn Stock: 1027AC0201FR-07510KL Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the RK73H1HTTC5103F are qualified based on strict electrical and mechanical parameter matching:

Qualifying Criteria:

• Resistance value: 510 kOhms (exact match required)
• Tolerance: ±1% (exact match required)
• Power rating: 0.05W / 1/20W (exact match required)
• Package: 0201 (0603 Metric) (exact match required)
• Composition: Thick Film (exact match required)
• Temperature coefficient: ±200ppm/°C (exact match required)
• Operating temperature range: -55°C ~ 155°C (exact match required)
• Automotive qualification: AEC-Q200 (exact match required)
• Moisture resistance: Present (exact match required)
• RoHS compliance: ROHS3 Compliant (exact match required)
• MSL rating: 1 (Unlimited) (exact match required)

All identified substitute parts meet these criteria without exception. Substitution is based solely on functional and physical equivalence; no performance assumptions or testing recommendations are introduced.

Parameter Comparison

Engineering Selection Recommendations

RK73H1HTTCM5103F (KOA Speer Electronics, Inc.)

This part is the manufacturer-recommended substitute from KOA Speer Electronics. It maintains identical electrical and mechanical specifications to the RK73H1HTTC5103F while carrying an Active product status. This part is suitable for new production runs and ongoing supply requirements. Current inventory: 730 pcs.

AC0201FR-07510KL (YAGEO)

This part is a direct cross-reference from YAGEO and meets all electrical and mechanical parameters of the RK73H1HTTC5103F. It carries an Active product status and is available from alternative supply channels. Current inventory: 953 pcs. This option provides supply diversification across manufacturers while maintaining full parameter equivalence.

Both substitute parts are ROHS3 compliant, AEC-Q200 qualified, and suitable for automotive and industrial applications requiring the specified electrical and thermal characteristics.

Frequently Asked Questions (FAQ)

Q: Can RK73H1HTTCM5103F be used as a direct replacement for RK73H1HTTC5103F?

A: Yes. RK73H1HTTCM5103F is the manufacturer-recommended substitute from KOA Speer Electronics. All electrical parameters (510 kOhms, ±1%, 0.05W), mechanical dimensions (0201 package), thermal characteristics (-55°C ~ 155°C), and compliance certifications (AEC-Q200, ROHS3, MSL 1) are identical.

Q: What is the difference between RK73H1HTTC5103F and RK73H1HTTCM5103F?

A: The primary difference is product status. RK73H1HTTC5103F is marked "Not For New Designs," while RK73H1HTTCM5103F is Active. Both parts are electrically and mechanically equivalent. The "M" designation in RK73H1HTTCM5103F indicates the active production variant.

Q: Can YAGEO AC0201FR-07510KL replace the KOA part?

A: Yes. AC0201FR-07510KL meets all specified parameters: 510 kOhms ±1%, 0.05W, 0201 package, ±200ppm/°C temperature coefficient, -55°C ~ 155°C operating range, AEC-Q200 qualification, ROHS3 compliance, and MSL 1 rating. This part provides cross-manufacturer substitution capability.

Q: Are there any package or footprint differences between these parts?

A: No. All three parts use the 0201 (0603 Metric) package with identical dimensions: 0.024" L x 0.012" W (0.60mm x 0.30mm) and maximum seated height of 0.010" (0.26mm). PCB footprints are interchangeable.

Q: Do all substitute parts meet automotive AEC-Q200 qualification?

A: Yes. RK73H1HTTCM5103F and AC0201FR-07510KL both carry AEC-Q200 ratings, matching the original RK73H1HTTC5103F specification. All three parts are suitable for automotive applications.

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

A: All three parts carry MSL 1 (Unlimited) rating, indicating no moisture sensitivity restrictions. Standard handling and storage procedures apply without special moisture control requirements.

Q: Are these parts RoHS compliant?

A: Yes. All three parts are ROHS3 compliant, meeting current environmental and hazardous substance restrictions for electronic components.