RC0402J512CS Equivalent & Substitute Parts

Part Overview

The RC0402J512CS is a 5.1 kOhms ±5% chip resistor manufactured by Samsung Electro-Mechanics, rated at 0.03W (1/32W) power dissipation in the 01005 (0402 Metric) package. This thick film, moisture-resistant component operates across the -55°C to 125°C temperature range and is ROHS3 compliant with MSL 1 rating. The part is currently in active production status with 722 units available in inventory. Equivalent and substitute parts are identified when electrical specifications, mechanical dimensions, and environmental ratings align within acceptable tolerances for direct circuit board replacement.

Substiute Parts

RC0402J512CS

Samsung Electro-MechanicsIn Stock: 739RC0402J512CS Datasheet

Current PartRFQ

CRCW01005K10FREL

Vishay DaleIn Stock: 39062CRCW01005K10FREL Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the RC0402J512CS is determined by the following critical parameters:

Mandatory Matching Parameters:

• Resistance value: 5.1 kOhms
• Package / Case: 01005 (0402 Metric)
• Power rating: 0.03W (1/32W) minimum
• Composition: Thick Film
• Operating temperature range: -55°C ~ 125°C minimum
• Moisture Sensitivity Level: 1 or equivalent
• RoHS compliance: ROHS3 or higher

Allowable Variation:

• Tolerance: ±5% or tighter (±1% is acceptable as a superior specification)
• Temperature coefficient: ±250ppm/°C or better

The CRCW01005K10FREL from Vishay Dale meets all mandatory parameters with an improved tolerance specification of ±1%, making it a direct electrical and mechanical substitute.

Parameter Comparison

Engineering Selection Recommendations

The CRCW01005K10FREL is a qualified substitute for the RC0402J512CS based on the following engineering criteria:

Electrical Compatibility: Both components share identical resistance values, power ratings, temperature coefficients, and operating temperature ranges. The CRCW01005K10FREL provides superior tolerance performance at ±1% compared to the RC0402J512CS at ±5%, which represents an improvement in circuit accuracy without introducing incompatibility.

Mechanical Compatibility: Package dimensions, termination count, and physical footprint are identical between both parts, ensuring direct PCB layout compatibility without design modification.

Compliance and Certification: Both components maintain ROHS3 compliance, MSL 1 rating, and equivalent environmental specifications. No regulatory or certification barriers exist for substitution.

Product Status: Both parts are in active production status, ensuring long-term availability and supply chain stability.

Frequently Asked Questions (FAQ)

Q: Can the CRCW01005K10FREL replace the RC0402J512CS in existing designs?

A: Yes. The CRCW01005K10FREL is a direct mechanical and electrical substitute. Identical package dimensions, power ratings, and operating temperature ranges ensure PCB compatibility without layout modifications. The tighter tolerance specification (±1% versus ±5%) represents an improvement in circuit performance.

Q: What is the significance of the tolerance difference between ±5% and ±1%?

A: Tolerance defines the maximum deviation from the nominal resistance value. The RC0402J512CS allows resistance variation between 4.845 kOhms and 5.355 kOhms. The CRCW01005K10FREL restricts variation to 5.049 kOhms and 5.151 kOhms. In applications requiring tighter resistance control, the ±1% specification provides superior performance. In applications where ±5% tolerance is acceptable, both parts function identically.

Q: Are the physical dimensions identical?

A: Yes. Both components use the 01005 (0402 Metric) package with dimensions of 0.016" L x 0.008" W (0.40mm x 0.20mm) and maximum seated height of 0.006" (0.15mm). No PCB footprint adjustment is required.

Q: Do both parts have the same moisture sensitivity rating?

A: Yes. Both the RC0402J512CS and CRCW01005K10FREL carry MSL 1 (Unlimited) rating, indicating no moisture sensitivity restrictions during storage or handling.

Q: What is the temperature coefficient, and does it differ between parts?

A: Both components specify ±250ppm/°C temperature coefficient, meaning resistance changes by a maximum of 250 parts per million for each degree Celsius change in operating temperature. This specification is identical across both parts.

Q: Are there any RoHS or regulatory compliance differences?

A: No. Both components are ROHS3 compliant and REACH unaffected, meeting identical regulatory requirements for electronic component use in restricted substance directives.