RK73H2ATTD5233F Equivalent & Substitute Parts

Part Overview

The RK73H2ATTD5233F is a 523 kOhms ±1% 0.25W chip resistor in 0805 (2012 Metric) package manufactured by KOA Speer Electronics, Inc. This automotive-grade thick film resistor features AEC-Q200 qualification and moisture resistance, designed for applications requiring high reliability in temperature-variable environments. The part is currently active in production with 3422 units in stock. Substitute parts are identified to provide alternative sourcing options while maintaining electrical and mechanical compatibility.

Substiute Parts

RK73H2ATTD5233F

KOA Speer Electronics, Inc.In Stock: 3474RK73H2ATTD5233F Datasheet

Current PartRFQ

CRCW0805523KFKEA

Vishay DaleIn Stock: 25169CRCW0805523KFKEA Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the RK73H2ATTD5233F is determined by the following critical parameters:

• Resistance value: 523 kOhms (exact match required)
• Tolerance: ±1% (exact match required)
• Package: 0805 (2012 Metric) (exact match required)
• Temperature Coefficient: ±100ppm/°C (exact match required)
• Operating Temperature Range: -55°C ~ 155°C (exact match required)
• Automotive Rating: AEC-Q200 (exact match required)
• Composition: Thick Film (exact match required)
• RoHS Compliance: ROHS3 Compliant (exact match required)

The CRCW0805523KFKEA from Vishay Dale meets all critical electrical and mechanical parameters. The power rating difference (0.125W vs. 0.25W) represents a derating condition; the substitute part operates at reduced power capacity within the same package footprint and maintains all other specifications.

Parameter Comparison

Engineering Selection Recommendations

Both the RK73H2ATTD5233F and CRCW0805523KFKEA are active production parts with ROHS3 compliance and AEC-Q200 automotive qualification. Selection between these parts depends on application power dissipation requirements. The RK73H2ATTD5233F provides 0.25W rated capacity, while the CRCW0805523KFKEA is rated at 0.125W. Applications operating at or below 0.125W dissipation can utilize either part interchangeably. Applications requiring the full 0.25W capacity must use the RK73H2ATTD5233F. Both parts maintain identical electrical performance across the specified temperature range and meet automotive reliability standards.

Frequently Asked Questions (FAQ)

Q: Can CRCW0805523KFKEA replace RK73H2ATTD5233F in all applications?

A: Substitution is valid only when circuit power dissipation does not exceed 0.125W. The CRCW0805523KFKEA has a lower power rating (0.125W vs. 0.25W) and will operate at higher temperature rise under identical power conditions. Verify application power budget before substitution.

Q: Are the physical dimensions identical?

A: Both parts use the 0805 (2012 Metric) package with identical length and width (0.079" x 0.049"). The CRCW0805523KFKEA has a maximum seated height of 0.020" compared to 0.024" for the RK73H2ATTD5233F, making it suitable for space-constrained PCB layouts.

Q: Do both parts meet automotive standards?

A: Yes. Both the RK73H2ATTD5233F and CRCW0805523KFKEA carry AEC-Q200 qualification and are suitable for automotive applications within their respective power ratings.

Q: What is the impact of different power ratings on circuit performance?

A: Power rating affects thermal performance and component lifespan under load. The 0.125W-rated CRCW0805523KFKEA will reach higher junction temperatures at equivalent power dissipation. Ensure thermal analysis confirms acceptable operating conditions for the substitute part.

Q: Are both parts RoHS compliant?

A: Yes. Both parts are ROHS3 compliant with moisture sensitivity level 1 (unlimited), meeting environmental and regulatory requirements.