WR12X511 JTL Equivalent & Substitute Parts

Part Overview

The WR12X511 JTL is a 510 Ohms ±5% 0.25W thick film chip resistor manufactured by Walsin Technology Corporation in the 1206 (3216 Metric) surface mount package. This component is classified as Active product status and is RoHS3 compliant. Equivalent and substitute parts are identified to provide design flexibility, support supply chain continuity, and accommodate varying inventory availability across manufacturing and procurement cycles.

Key Parameters

Parameter	Value
Resistance	510 Ohms
Tolerance	±5%
Power Rating	0.25W (1/4W)
Package / Case	1206 (3216 Metric)
Composition	Thick Film
Temperature Coefficient	±100ppm/°C
Operating Temperature Range	-55°C ~ 155°C
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution of the WR12X511 JTL is determined by strict equivalence across the following critical parameters:

Resistance Value: 510 Ohms (exact match required)
Tolerance: ±5% (exact match required)
Power Rating: 0.25W / 1/4W (exact match required)
Package Type: 1206 (3216 Metric) surface mount (exact match required)
Composition: Thick Film (exact match required)
Temperature Coefficient: ±100ppm/°C (exact match required)
Operating Temperature Range: -55°C ~ 155°C (exact match required)
Regulatory Compliance: RoHS3 Compliant, REACH Unaffected (exact match required)

The substitute part CR08511J meets all critical electrical and mechanical parameters. Minor dimensional variations in length (0.126" vs 0.122") and height (0.024" vs 0.030") remain within acceptable tolerances for 1206 package specifications and do not affect functional performance or PCB assembly compatibility.

Parameter Comparison

Parameter	WR12X511 JTL (Walsin)	CR08511J (Meritek)	Match Status
Manufacturer	Walsin Technology Corporation	Meritek	Different Manufacturer
Resistance	510 Ohms	510 Ohms	Equivalent
Tolerance	±5%	±5%	Equivalent
Power Rating	0.25W (1/4W)	0.25W (1/4W)	Equivalent
Package / Case	1206 (3216 Metric)	1206 (3216 Metric)	Equivalent
Composition	Thick Film	Thick Film	Equivalent
Temperature Coefficient	±100ppm/°C	±100ppm/°C	Equivalent
Operating Temperature	-55°C ~ 155°C	-55°C ~ 155°C	Equivalent
Length	0.122" (3.10mm)	0.126" (3.20mm)	Within Tolerance
Width	0.063" (1.60mm)	0.063" (1.60mm)	Equivalent
Height - Seated (Max)	0.030" (0.75mm)	0.024" (0.60mm)	Within Tolerance
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	Equivalent
Moisture Sensitivity Level	1 (Unlimited)	1 (Unlimited)	Equivalent
REACH Status	REACH Unaffected	REACH Unaffected	Equivalent
Packaging	Tape & Reel (TR)	Tape & Reel (TR)	Equivalent

Engineering Selection Recommendations

The CR08511J manufactured by Meritek is a direct functional equivalent to the WR12X511 JTL. Both components satisfy identical electrical specifications, thermal performance requirements, and regulatory compliance standards. Selection between these parts is based on availability, supply chain logistics, and procurement requirements rather than technical performance differences.

Both parts maintain Active product status and carry full RoHS3 compliance and REACH unaffected certifications, ensuring compatibility with current environmental and regulatory requirements. The minor dimensional variations in length and seated height do not impact PCB layout, assembly processes, or electrical performance in standard 1206 package applications.

Frequently Asked Questions (FAQ)

Q: Can CR08511J be used as a direct replacement for WR12X511 JTL on existing PCB designs?

A: Yes. Both components are 1206 (3216 Metric) surface mount resistors with identical electrical specifications (510 Ohms ±5%, 0.25W, ±100ppm/°C, -55°C ~ 155°C). The minor dimensional differences (0.004" length variation, 0.006" height variation) remain within standard 1206 package tolerances and do not require PCB redesign.

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

A: No. Both WR12X511 JTL and CR08511J carry identical RoHS3 compliance, REACH unaffected status, and MSL 1 (Unlimited) moisture sensitivity ratings. Both are suitable for applications requiring environmental and regulatory compliance.

Q: What is the tolerance range for the 510 Ohm resistance value?

A: With ±5% tolerance, the acceptable resistance range is 484.5 Ohms to 535.5 Ohms. Both the WR12X511 JTL and CR08511J meet this specification.

Q: Are these parts suitable for high-temperature applications?

A: Both components operate across the -55°C to 155°C temperature range with a temperature coefficient of ±100ppm/°C. This specification applies to both the Walsin and Meritek versions.

Q: What is the difference in packaging between these parts?

A: Both parts are supplied in Tape & Reel (TR) format, the standard packaging for automated PCB assembly. No packaging differences exist between the two manufacturers.

Q: Can these resistors be used in automotive or industrial applications?

A: Both parts meet RoHS3 compliance and carry MSL 1 (Unlimited) moisture sensitivity ratings, supporting use in demanding environments. Specific application suitability depends on circuit design requirements and operating conditions beyond the component specifications provided.

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