TL3AR015F Equivalent & Substitute Parts

Part Overview

The TL3AR015F is a 15 milliohm, ±1% tolerance, 1W metal foil chip resistor manufactured by TE Connectivity in the 2512 (6432 Metric) package. This component is designed for current sensing applications requiring precision and stability. The part is classified as obsolete, necessitating identification of active equivalent alternatives that maintain electrical and mechanical compatibility for ongoing production and repair applications.

Key Parameters

Parameter	Value	Criticality for Substitution
Resistance Value	15 mOhms (0.015 Ohm)	Critical - Must Match Exactly
Tolerance	±1%	Critical - Defines Precision Class
Power Rating	1W	Critical - Thermal Performance Requirement
Composition	Metal Foil	Critical - Determines Stability and Accuracy
Package / Case	2512 (6432 Metric)	Critical - PCB Layout Compatibility
Temperature Coefficient	±75 ppm/°C (Main Part)	Important - Affects Performance Across Temperature Range
Operating Temperature Range	-65°C ~ 170°C (Main Part)	Important - Application Environment Suitability
Features	Current Sense	Critical - Application-Specific Function
RoHS Status	ROHS3 Compliant	Important - Regulatory Compliance

Substitute Part Grouping Explanation

Substitution eligibility for the TL3AR015F is determined by strict equivalence across the following parameters:

Critical Matching Parameters:

Resistance value: 15 mOhms (exact match required)
Tolerance: ±1% (precision class equivalence)
Power rating: 1W (thermal capacity equivalence)
Composition: Metal foil (performance characteristics)
Package: 2512 (6432 Metric) (physical and electrical footprint)
Application function: Current sense capability

Compliance Parameters:

RoHS3 compliance status
REACH unaffected status
Moisture sensitivity level (MSL 1 - Unlimited)

The substitute part KRL3264-C-R015-F-T1 meets all critical matching parameters and maintains regulatory compliance. The part is classified as active, providing long-term availability for production applications.

Parameter Comparison

Parameter	TL3AR015F (Main Part)	KRL3264-C-R015-F-T1 (Substitute)	Match Status
Manufacturer	TE Connectivity Passive Product	Susumu	Different Manufacturer
Resistance Value	15 mOhms	15 mOhms	Equivalent
Tolerance	±1%	±1%	Equivalent
Power Rating	1W	1W	Equivalent
Composition	Metal Foil	Metal Foil	Equivalent
Package / Case	2512 (6432 Metric)	2512 (6432 Metric)	Equivalent
Features	Current Sense	Automotive AEC-Q200, Current Sense	Equivalent (Substitute Includes Additional Certification)
Temperature Coefficient	±75 ppm/°C	±50 ppm/°C	Substitute Superior
Operating Temperature Range	-65°C ~ 170°C	-55°C ~ 175°C	Substitute Covers Extended Upper Range
Size / Dimension	0.252" L x 0.126" W (6.40mm x 3.20mm)	0.248" L x 0.122" W (6.30mm x 3.10mm)	Within Tolerance (Metric Equivalent Package)
Height - Seated (Max)	0.024" (0.60mm)	0.028" (0.70mm)	Substitute Slightly Taller
Product Status	Obsolete	Active	Substitute Actively Manufactured
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	Equivalent
Moisture Sensitivity Level	1 (Unlimited)	1 (Unlimited)	Equivalent
REACH Status	REACH Unaffected	REACH Unaffected	Equivalent

Engineering Selection Recommendations

Primary Substitute: KRL3264-C-R015-F-T1 (Susumu)

The KRL3264-C-R015-F-T1 is the qualified substitute for the obsolete TL3AR015F. Selection rationale:

Electrical Equivalence: Identical resistance value (15 mOhms), tolerance (±1%), power rating (1W), and metal foil composition ensure direct functional replacement in current sensing circuits.
Package Compatibility: Both parts use the 2512 (6432 Metric) package with equivalent footprints. Dimensional variations (length 6.40mm vs. 6.30mm, width 3.20mm vs. 3.10mm, height 0.60mm vs. 0.70mm) are within standard PCB design tolerances for this package class.
Regulatory Compliance: Both parts maintain ROHS3 compliance, REACH unaffected status, and MSL 1 rating, satisfying standard industrial and commercial regulatory requirements.
Enhanced Performance Characteristics: The substitute exhibits superior temperature coefficient (±50 ppm/°C vs. ±75 ppm/°C) and extended upper operating temperature limit (175°C vs. 170°C), providing improved stability across temperature extremes.
Automotive Qualification: The substitute carries AEC-Q200 certification, indicating suitability for automotive applications with enhanced reliability screening and qualification standards.
Active Production Status: The substitute is actively manufactured, ensuring long-term availability and supply chain continuity compared to the obsolete main part.

Frequently Asked Questions (FAQ)

Q: Can the KRL3264-C-R015-F-T1 be used as a direct replacement for the TL3AR015F?

A: Yes. Both parts share identical electrical specifications (15 mOhms, ±1%, 1W, metal foil composition) and package designation (2512/6432 Metric). The substitute is electrically and mechanically compatible for direct PCB substitution.

Q: What are the dimensional differences between these parts?

A: The main part measures 6.40mm L × 3.20mm W × 0.60mm H (max seated height). The substitute measures 6.30mm L × 3.10mm W × 0.70mm H (max seated height). These variations fall within standard tolerances for the 2512 package class and do not affect PCB layout compatibility.

Q: Does the substitute meet the same regulatory requirements?

A: Yes. Both parts are ROHS3 compliant, REACH unaffected, and carry MSL 1 (Unlimited) moisture sensitivity rating. The substitute additionally carries AEC-Q200 automotive qualification.

Q: How does the temperature coefficient difference affect circuit performance?

A: The substitute exhibits a lower temperature coefficient (±50 ppm/°C vs. ±75 ppm/°C), resulting in improved resistance stability across temperature variations. This represents enhanced performance compared to the main part.

Q: Is the substitute suitable for automotive applications?

A: Yes. The KRL3264-C-R015-F-T1 carries AEC-Q200 certification, qualifying it for automotive-grade applications with enhanced reliability and qualification standards.

Q: What is the availability status of each part?

A: The TL3AR015F is obsolete with limited remaining inventory (2,736 pcs). The KRL3264-C-R015-F-T1 is actively manufactured by Susumu with current inventory (756 pcs), ensuring ongoing supply for new production and repair applications.

Q: Are there any application restrictions when substituting these parts?

A: No application restrictions exist. The substitute maintains all critical electrical and mechanical parameters required for current sensing applications. The enhanced temperature coefficient and extended operating range provide performance benefits in demanding thermal environments.

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