WR04X511 JTL Equivalent & Substitute Parts

Part Overview

The WR04X511 JTL is a 510 Ohm ±5% thick film chip resistor manufactured by Walsin Technology Corporation in the 0402 (1005 Metric) package format. This component is rated for 0.063W (1/16W) power dissipation and operates across the temperature range of -55°C to 155°C. The part is currently in active production status with RoHS3 compliance and unlimited moisture sensitivity rating (MSL 1). Substitute components are identified when original stock availability is limited or when supply chain requirements necessitate alternative sourcing from qualified manufacturers meeting identical electrical and mechanical specifications.

Substiute Parts

WR04X511 JTL

Walsin Technology CorporationIn Stock: 854WR04X511 JTL Datasheet

Current PartRFQ

CR20511J

MeritekIn Stock: 60792CR20511J Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute components for the WR04X511 JTL are qualified based on strict equivalence across all critical electrical and mechanical parameters. The substitution logic is based on the following criteria:

Electrical Parameters:

• Resistance value: 510 Ohms (exact match required)
• Tolerance: ±5% (exact match required)
• Power rating: 0.063W / 1/16W (exact match required)
• Temperature coefficient: ±100ppm/°C (exact match required)
• Operating temperature range: -55°C ~ 155°C (exact match required)

Mechanical Parameters:

• Package format: 0402 (1005 Metric) (exact match required)
• Composition: Thick Film (exact match required)
• Number of terminations: 2 (exact match required)

Compliance Parameters:

• RoHS3 compliance (required)
• Moisture sensitivity level: 1 (Unlimited) (required)
• REACH status: REACH Unaffected (required)

Only components meeting all specified parameters across electrical, mechanical, and compliance categories are listed as direct substitutes.

Parameter Comparison

Engineering Selection Recommendations

The CR20511J manufactured by Meritek is a direct functional equivalent to the WR04X511 JTL. Both components are active production parts with identical electrical specifications, mechanical dimensions, and compliance certifications. Selection between these two parts is based on availability, supply chain logistics, and procurement requirements rather than technical performance differences.

Both parts satisfy the following compliance requirements:

• RoHS3 compliance for restricted substance management
• REACH unaffected status for chemical safety
• Moisture sensitivity level 1 (unlimited) for storage and handling flexibility
• EAR99 export classification

The 0402 (1005 Metric) package format ensures compatibility with standard surface mount assembly processes and PCB layouts designed for this footprint. The thick film composition and ±100ppm/°C temperature coefficient provide stable performance across the full operating temperature range of -55°C to 155°C.

Frequently Asked Questions (FAQ)

Q: Can the CR20511J be used as a direct replacement for the WR04X511 JTL in production assemblies?

A: Yes. The CR20511J meets all electrical, mechanical, and compliance specifications of the WR04X511 JTL. Both components are 510 Ohm ±5% thick film resistors in the 0402 package with identical power ratings, temperature coefficients, and operating ranges. No circuit redesign or validation is required for substitution.

Q: Are there any differences in the physical footprint between these two parts?

A: No. Both the WR04X511 JTL and CR20511J share identical dimensions: 0.039" L x 0.020" W (1.00mm x 0.50mm) with a maximum seated height of 0.016" (0.40mm). They are fully compatible with the same PCB layouts and assembly equipment.

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

A: MSL 1 indicates the component has unlimited shelf life and requires no special moisture control during storage or handling. This eliminates the need for dry-pack storage, desiccant bags, or bake-out procedures prior to assembly, simplifying supply chain management.

Q: Do both parts require the same handling and storage conditions?

A: Yes. Both components carry MSL 1 (Unlimited) ratings, meaning they can be stored at standard ambient conditions without moisture sensitivity concerns. Standard ESD precautions for surface mount components apply to both parts.

Q: Are there any export or regulatory restrictions on either part?

A: Both parts are classified as EAR99 and carry REACH Unaffected status. Both are RoHS3 compliant. No additional export licensing or regulatory documentation is required beyond standard commercial export procedures.

Q: What is the difference between the WR series and CR series designations?

A: The series designation (WR for Walsin, CR for Meritek) identifies the manufacturer. The series letter does not indicate functional differences; it is purely a manufacturer identifier. The electrical and mechanical specifications remain identical across both series for this equivalent part.

Q: Can these parts be mixed in the same production batch or assembly?

A: Yes. Both parts meet identical specifications and can be used interchangeably within the same assembly or production batch. However, standard component traceability and documentation practices should be maintained for quality and compliance records.