RK73H1HTTC1540F Equivalent & Substitute Parts

Part Overview

The RK73H1HTTC1540F is a 154 Ohm ±1% thick film chip resistor manufactured by KOA Speer Electronics, Inc., rated at 0.05W (1/20W) in 0201 package format. This component meets automotive AEC-Q200 qualification standards and incorporates moisture-resistant construction suitable for demanding environmental applications.

The RK73H1HTTC1540F carries a "Not For New Designs" product status, indicating that KOA Speer Electronics has transitioned this part to end-of-life phase. Identifying equivalent and substitute parts is necessary for ongoing production support, legacy system maintenance, and design continuity where this resistor specification remains functionally required.

Substiute Parts

RK73H1HTTC1540F

KOA Speer Electronics, Inc.In Stock: 1112RK73H1HTTC1540F Datasheet

Current PartRFQ

RK73H1HTTCM1540F

KOA Speer Electronics, Inc.In Stock: 834RK73H1HTTCM1540F Datasheet

MFR RecommendedRFQ

AC0201FR-07154RL

YAGEOIn Stock: 905AC0201FR-07154RL Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the RK73H1HTTC1540F are qualified based on strict electrical and mechanical parameter matching:

Substitution Criteria:

• Resistance value: 154 Ohms (exact match required)
• Tolerance: ±1% (exact match required)
• Power rating: 0.05W / 1/20W (exact match required)
• Package format: 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)
• Moisture sensitivity: MSL 1 (exact match required)

Substitute parts are grouped into two categories: manufacturer-recommended alternatives from KOA Speer Electronics and direct cross-reference parts from alternative manufacturers meeting identical electrical and mechanical specifications.

Parameter Comparison

Engineering Selection Recommendations

RK73H1HTTCM1540F (KOA Speer Electronics, Inc. - MFR Recommended):

This part represents the manufacturer-recommended successor to the RK73H1HTTC1540F. It maintains active product status and carries identical electrical specifications including 154 Ohm resistance, ±1% tolerance, 0.05W power rating, and AEC-Q200 automotive qualification. The part is ROHS3 compliant with MSL 1 rating. Selection of this part ensures continuity with the original manufacturer's product line and provides ongoing supply availability. Note that moisture resistance is not explicitly specified for this variant, which represents a potential difference from the original part specification.

AC0201FR-07154RL (YAGEO - Direct Cross-Reference):

This YAGEO part provides a direct electrical and mechanical equivalent with active product status. It matches all critical parameters including 154 Ohm resistance, ±1% tolerance, 0.05W power rating, 0201 package format, ±200ppm/°C temperature coefficient, -55°C ~ 155°C operating range, and AEC-Q200 automotive qualification. The part explicitly includes moisture-resistant construction, matching the original RK73H1HTTC1540F specification. ROHS3 compliance and MSL 1 rating are confirmed. This part is supplied in Tape & Reel packaging, consistent with the original component format.

Frequently Asked Questions (FAQ)

Q: Can RK73H1HTTCM1540F be used as a direct replacement for RK73H1HTTC1540F?

A: RK73H1HTTCM1540F matches all specified electrical and mechanical parameters with the original part. However, moisture resistance is not explicitly documented for the HTTCM variant, whereas the original HTTC part specifies moisture-resistant construction. Applications requiring confirmed moisture resistance should reference the detailed product datasheets from KOA Speer Electronics.

Q: What is the difference between the RK73H1HTTC1540F and RK73H1HTTCM1540F part numbers?

A: Both parts are manufactured by KOA Speer Electronics with identical electrical specifications. The primary difference is product status: RK73H1HTTC1540F is designated "Not For New Designs," while RK73H1HTTCM1540F carries "Active" status, indicating ongoing manufacturing and supply support.

Q: Is AC0201FR-07154RL from YAGEO fully compatible with RK73H1HTTC1540F?

A: AC0201FR-07154RL meets all electrical and mechanical specifications required for substitution, including 154 Ohm resistance, ±1% tolerance, 0.05W power rating, 0201 package, ±200ppm/°C temperature coefficient, -55°C ~ 155°C operating range, AEC-Q200 automotive qualification, moisture resistance, ROHS3 compliance, and MSL 1 rating. The part is supplied in Tape & Reel format matching the original packaging.

Q: Are there any package or form factor differences between these substitute parts?

A: All three parts utilize the 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). Both the original RK73H1HTTC1540F and AC0201FR-07154RL are supplied in Tape & Reel packaging. Packaging format for RK73H1HTTCM1540F is not specified in available documentation.

Q: What certifications and compliance standards apply to these substitute parts?

A: All three parts carry AEC-Q200 automotive qualification, ROHS3 compliance, and MSL 1 (Unlimited) moisture sensitivity rating. REACH status is "REACH Unaffected" for all parts. ECCN classification is EAR99 and HTSUS code is 8533.21.0030 for all parts.

Q: Can these parts be used interchangeably in automotive applications?

A: All substitute parts meet AEC-Q200 automotive qualification standards and operate across the -55°C ~ 155°C temperature range required for automotive use. Electrical specifications including resistance tolerance (±1%), temperature coefficient (±200ppm/°C), and power rating (0.05W) are identical across all parts, supporting interchangeable use in automotive circuit designs.