RK73H1HTTC8253D Equivalent & Substitute Parts

Part Overview

The RK73H1HTTC8253D is a 825 kOhms ±0.5% thick film chip resistor manufactured by KOA Speer Electronics, Inc. in 0201 package format with 0.05W power rating. This component is rated for automotive applications under AEC-Q200 standard and features moisture-resistant construction suitable for harsh operating environments.

The RK73H1HTTC8253D carries a product status of "Not For New Designs," indicating it has been superseded in the manufacturer's product line. Identifying equivalent substitute parts is necessary to ensure design continuity, maintain supply chain reliability, and transition to active product alternatives that meet identical electrical and mechanical specifications.

Substiute Parts

RK73H1HTTC8253D

KOA Speer Electronics, Inc.In Stock: 1110RK73H1HTTC8253D Datasheet

Current PartRFQ

RK73H1HTTCM8253D

KOA Speer Electronics, Inc.In Stock: 995RK73H1HTTCM8253D Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the RK73H1HTTC8253D is determined by strict equivalence across the following critical parameters:

Electrical Parameters:

• Resistance value: 825 kOhms (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 / Case: 0201 (0603 Metric) (exact match required)
• Physical dimensions: 0.024" L x 0.012" W / 0.60mm x 0.30mm (exact match required)
• Height - Seated (Max): 0.010" (0.26mm) (exact match required)

Compliance & Certification:

• Automotive rating: AEC-Q200 (exact match required)
• RoHS Status: ROHS3 Compliant (exact match required)
• Moisture Sensitivity Level: 1 (Unlimited) (exact match required)

Substitute parts must maintain identical electrical performance, physical form factor, and regulatory compliance to ensure direct interchangeability in existing designs without circuit modification or re-qualification.

Parameter Comparison

Engineering Selection Recommendations

The RK73H1HTTCM8253D is the manufacturer-recommended substitute for the RK73H1HTTC8253D. Both components are manufactured by KOA Speer Electronics, Inc. within the RK73H series and maintain complete electrical and mechanical equivalence.

Selection Basis:

The RK73H1HTTCM8253D provides direct functional replacement with the following advantages:

• Product Status: The substitute carries Active product status, ensuring continued availability and manufacturer support, whereas the main part is designated "Not For New Designs."
• Compliance Continuity: Both parts maintain identical AEC-Q200 automotive certification, ROHS3 compliance, and MSL 1 moisture sensitivity rating.
• Electrical Equivalence: Resistance, tolerance, power rating, temperature coefficient, and operating temperature range are identical across both parts.
• Mechanical Compatibility: Physical dimensions, package format, and form factor are identical, enabling direct PCB footprint compatibility without layout modification.

For applications currently using RK73H1HTTC8253D, transition to RK73H1HTTCM8253D is supported without circuit re-qualification or design changes.

Frequently Asked Questions (FAQ)

Q: Can RK73H1HTTCM8253D be used as a direct replacement for RK73H1HTTC8253D?

A: Yes. The RK73H1HTTCM8253D is electrically and mechanically equivalent to the RK73H1HTTC8253D. Both components share identical resistance (825 kOhms), tolerance (±0.5%), power rating (0.05W), package format (0201), and AEC-Q200 automotive certification. Direct substitution is supported without design modification.

Q: What is the difference between RK73H1HTTC8253D and RK73H1HTTCM8253D?

A: The primary difference is product status. RK73H1HTTC8253D is designated "Not For New Designs," indicating end-of-life status. RK73H1HTTCM8253D carries Active product status and is the current manufacturer offering. All electrical specifications, mechanical dimensions, and compliance certifications are identical.

Q: Are both parts suitable for automotive applications?

A: Yes. Both RK73H1HTTC8253D and RK73H1HTTCM8253D are rated to AEC-Q200 automotive standard and feature moisture-resistant thick film construction. Both operate across the -55°C ~ 155°C temperature range required for automotive environments.

Q: Will the substitute part fit the existing PCB layout?

A: Yes. Both parts use identical 0201 (0603 Metric) package format with matching physical dimensions of 0.024" L x 0.012" W (0.60mm x 0.30mm) and maximum seated height of 0.010" (0.26mm). No PCB layout modification is required.

Q: Are there any compliance or certification differences?

A: No. Both parts maintain identical ROHS3 compliance, MSL 1 moisture sensitivity rating, and AEC-Q200 automotive certification. Regulatory and environmental compliance is equivalent.

Q: What is the temperature coefficient specification?

A: Both parts specify ±200ppm/°C temperature coefficient, ensuring stable resistance performance across the full -55°C ~ 155°C operating range.