RC6432F1740CS Equivalent & Substitute Parts

Part Overview

The RC6432F1740CS is a 174 Ohm ±1% 1W chip resistor manufactured by Samsung Electro-Mechanics in the 2512 (6432 Metric) package format. This thick film, moisture-resistant component operates across a temperature range of -55°C to 155°C and maintains ROHS3 compliance with MSL 1 rating. The part is currently in active production status with 893 pieces available in inventory. Substitute parts are identified to provide alternative sourcing options when the primary component becomes unavailable or when design requirements necessitate enhanced performance characteristics such as increased power ratings or automotive qualification.

Substiute Parts

RC6432F1740CS

Samsung Electro-MechanicsIn Stock: 1000RC6432F1740CS Datasheet

Current PartRFQ

CRCW2512174RFKEGHP

Vishay DaleIn Stock: 3281CRCW2512174RFKEGHP Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the RC6432F1740CS is permissible with the CRCW2512174RFKEGHP based on the following alignment of critical electrical and mechanical parameters:

Matching Parameters:

• Resistance value: 174 Ohms
• Tolerance: ±1%
• Package format: 2512 (6432 Metric)
• Composition: Thick Film
• Temperature coefficient: ±100ppm/°C
• Operating temperature range: -55°C ~ 155°C
• Moisture sensitivity level: 1 (Unlimited)
• RoHS compliance: ROHS3 Compliant
• Number of terminations: 2

Enhanced Characteristics in Substitute: The CRCW2512174RFKEGHP provides a higher power rating of 1.5W compared to the 1W rating of the primary part, along with automotive AEC-Q200 qualification and pulse withstanding capability. These enhancements do not create incompatibility; rather, they extend the operational envelope for applications requiring greater thermal margin or automotive-grade reliability.

Parameter Comparison

Engineering Selection Recommendations

Both the RC6432F1740CS and CRCW2512174RFKEGHP are active production components with full ROHS3 compliance and REACH unaffected status, making either suitable for new designs and production environments.

The RC6432F1740CS serves applications where the 1W power rating is sufficient and standard industrial-grade reliability is acceptable. This component is appropriate for general-purpose signal conditioning, biasing networks, and non-critical load applications.

The CRCW2512174RFKEGHP is selected for applications requiring enhanced thermal performance through its 1.5W rating or for designs subject to automotive environmental standards through its AEC-Q200 qualification. The pulse withstanding feature provides additional robustness in transient-rich environments. The marginal dimensional differences (0.002" width reduction and 0.002" height increase) remain within standard PCB layout tolerances for 2512 package footprints.

Selection between these components depends on application-specific power dissipation requirements and regulatory environment rather than functional incompatibility.

Frequently Asked Questions (FAQ)

Q: Can the CRCW2512174RFKEGHP directly replace the RC6432F1740CS in existing designs?

A: Yes. Both components share identical resistance value (174 Ohms), tolerance (±1%), package format (2512), temperature coefficient (±100ppm/°C), and operating temperature range (-55°C ~ 155°C). The substitute part's higher power rating (1.5W vs. 1W) and automotive qualification do not create incompatibility. Dimensional differences are negligible for standard PCB layouts: width difference of 0.002" and height difference of 0.002" remain within manufacturing tolerances for the 2512 package.

Q: What is the significance of the AEC-Q200 qualification on the substitute part?

A: AEC-Q200 is an automotive industry standard for discrete semiconductors and passive components. This qualification indicates the CRCW2512174RFKEGHP has undergone enhanced reliability testing including thermal cycling, humidity bias, and mechanical stress evaluation. For applications outside automotive environments, this certification provides additional assurance of component robustness but is not required for general industrial use.

Q: Does the 1.5W rating of the substitute part affect circuit behavior?

A: No. Power rating defines the maximum continuous power dissipation the component can safely handle without exceeding temperature limits. A higher power rating does not alter electrical performance at equivalent power levels. If the original design dissipates 0.5W through the resistor, both the 1W and 1.5W rated parts will perform identically at that power level.

Q: Are there packaging differences between these parts?

A: The RC6432F1740CS is supplied in standard packaging format, while the CRCW2512174RFKEGHP is supplied in Tape & Reel (TR) format. Both use the 2512 (6432 Metric) package case. Tape & Reel packaging is standard for high-volume production and automated assembly processes. If manual assembly or small-quantity procurement is required, packaging format may influence supplier selection.

Q: What is the moisture sensitivity level, and why is it relevant?

A: Both parts carry MSL 1 (Unlimited) rating, indicating unlimited shelf life without moisture bake-out requirements prior to soldering. This is the least restrictive moisture sensitivity classification and simplifies inventory management and production logistics.

Q: Are there any compliance or regulatory differences between these parts?

A: Both components are ROHS3 compliant and REACH unaffected, meeting current environmental and hazardous substance regulations for electronics manufacturing. No compliance barriers exist for substitution in regulated markets.