Equivalent & Substitute Parts for RK73H1HTTC6191F

Part Overview

The RK73H1HTTC6191F is a 6.19 kOhm ±1% thick film chip resistor manufactured by KOA Speer Electronics, Inc., rated at 0.05W (1/20W) in a 0201 package (0.60mm x 0.30mm). This component meets automotive AEC-Q200 qualification and includes moisture-resistant construction suitable for harsh operating environments.

The main part carries a "Not For New Designs" status, indicating it has been superseded. Equivalent and substitute parts are available from both the original manufacturer and alternative suppliers that maintain identical electrical and mechanical specifications, ensuring direct compatibility in existing designs and new applications.

Substiute Parts

RK73H1HTTC6191F

KOA Speer Electronics, Inc.In Stock: 14724RK73H1HTTC6191F Datasheet

Current PartRFQ

RK73H1HTTCM6191F

KOA Speer Electronics, Inc.In Stock: 933RK73H1HTTCM6191F Datasheet

MFR RecommendedRFQ

AC0201FR-076K19L

YAGEOIn Stock: 1163AC0201FR-076K19L Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the RK73H1HTTC6191F is determined by strict equivalence across the following critical parameters:

Electrical Parameters:

• Resistance value: 6.19 kOhms (exact match required)
• Tolerance: ±1% (no deviation permitted)
• Power rating: 0.05W / 1/20W (minimum requirement)
• Temperature coefficient: ±200ppm/°C (maximum allowable drift)
• Operating temperature range: -55°C ~ 155°C (minimum coverage required)

Mechanical Parameters:

• Package type: 0201 (0603 Metric) (physical footprint compatibility)
• Composition: Thick Film (material consistency)
• Number of terminations: 2 (standard configuration)
• Physical dimensions: 0.024" L x 0.012" W (0.60mm x 0.30mm)
• Maximum seated height: 0.010" (0.26mm)

Compliance & Certification:

• Automotive AEC-Q200 qualification (mandatory for automotive applications)
• RoHS3 compliance (regulatory requirement)
• Moisture Sensitivity Level 1 (unlimited shelf life)
• REACH unaffected status (material compliance)

Substitute parts must satisfy all electrical, mechanical, and compliance parameters without exception. Product status (Active vs. Not For New Designs) does not affect substitution eligibility but indicates design lifecycle stage.

Parameter Comparison

Engineering Selection Recommendations

For Existing Designs (Maintenance & Repair):

The RK73H1HTTCM6191F from KOA Speer Electronics, Inc. is the manufacturer-recommended direct equivalent. This part maintains identical electrical and mechanical specifications while carrying Active product status, ensuring continued availability and supply chain stability. Selection of this part preserves design integrity with manufacturer-backed compatibility.

For New Designs:

The AC0201FR-076K19L from YAGEO is a fully qualified substitute meeting all electrical, mechanical, and compliance requirements. This part carries Active status and includes moisture-resistant construction matching the original specification. YAGEO's AC series 0201 resistors are widely adopted in automotive and industrial applications with established supply availability.

Compliance Considerations:

Both substitute parts maintain AEC-Q200 automotive qualification, ROHS3 compliance, and MSL 1 rating. Selection between KOA and YAGEO alternatives depends on supply chain preferences, existing vendor relationships, and procurement lead times. No technical performance differentiation exists between qualified substitutes.

Moisture Resistance:

The RK73H1HTTCM6191F does not explicitly specify moisture-resistant construction in the provided data. For applications requiring confirmed moisture resistance, the AC0201FR-076K19L is the preferred selection.

Frequently Asked Questions (FAQ)

Q: Can RK73H1HTTCM6191F replace RK73H1HTTC6191F in existing assemblies?

A: Yes. Both parts are manufactured by KOA Speer Electronics, Inc. and share identical electrical specifications (6.19 kOhms ±1%, 0.05W), mechanical dimensions (0201 package), and automotive AEC-Q200 qualification. The RK73H1HTTCM6191F is the active production equivalent.

Q: Is AC0201FR-076K19L compatible with designs specified for RK73H1HTTC6191F?

A: Yes. The AC0201FR-076K19L meets all critical parameters: 6.19 kOhms ±1% resistance, 0.05W power rating, 0201 package footprint, ±200ppm/°C temperature coefficient, -55°C ~ 155°C operating range, and AEC-Q200 automotive qualification. Physical and electrical compatibility is confirmed.

Q: What is the difference between RK73H1HTTC6191F and RK73H1HTTCM6191F?

A: The primary difference is product status. RK73H1HTTC6191F is marked "Not For New Designs," while RK73H1HTTCM6191F carries Active status. Electrical and mechanical specifications are identical. The "M" designation in RK73H1HTTCM6191F indicates the active production variant.

Q: Are all substitute parts rated for automotive applications?

A: Yes. Both RK73H1HTTCM6191F and AC0201FR-076K19L carry AEC-Q200 automotive qualification, meeting automotive industry reliability and performance standards.

Q: Does moisture resistance affect substitution eligibility?

A: Moisture resistance is a feature specification, not a substitution criterion. The RK73H1HTTC6191F and AC0201FR-076K19L both specify moisture-resistant construction. The RK73H1HTTCM6191F does not explicitly state this feature in provided data. For applications requiring confirmed moisture resistance, verify with the supplier or select AC0201FR-076K19L.

Q: Can these 0201 resistors be used interchangeably on the same PCB assembly?

A: Yes. All qualified substitutes share identical 0201 (0603 Metric) package dimensions: 0.024" L x 0.012" W (0.60mm x 0.30mm) with maximum seated height of 0.010" (0.26mm). PCB footprints and pick-and-place equipment settings require no modification.

Q: What is the significance of MSL 1 (Unlimited) rating?

A: MSL 1 indicates unlimited shelf life without moisture bake-out requirements. These components can be stored indefinitely under standard warehouse conditions without degradation of solderability or performance.

Q: Are there supply availability differences between KOA and YAGEO alternatives?

A: Supply status varies by distributor and time period. Current inventory shows RK73H1HTTC6191F (14,688 pcs), RK73H1HTTCM6191F (836 pcs), and AC0201FR-076K19L (1,066 pcs). Verify current availability with authorized distributors for procurement planning.