TL3AR01FTDG Equivalent & Substitute Parts

Part Overview

The TL3AR01FTDG is a 10 mOhms ±1% 1W chip resistor in 2512 (6432 Metric) package manufactured by TE Connectivity Passive Product. This metal foil current sense resistor is designed for precision current measurement applications. The part is classified as obsolete, necessitating identification of active equivalent components to maintain design continuity and ensure supply chain availability for new production and field replacements.

Substiute Parts

TL3AR01FTDG

TE Connectivity Passive ProductIn Stock: 1026TL3AR01FTDG Datasheet

Current PartRFQ

TLRP3A20WR010FTE

TE Connectivity Passive ProductIn Stock: 1759TLRP3A20WR010FTE Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the TL3AR01FTDG is based on the following critical parameters that must remain constant or be compatible with the original design:

Mandatory Matching Parameters:

• Resistance value: 10 mOhms
• Tolerance: ±1%
• Package / Case: 2512 (6432 Metric)
• Composition: Metal Foil
• Features: Current Sense
• RoHS Status: ROHS3 Compliant
• Moisture Sensitivity Level: 1 (Unlimited)

Allowable Variation Parameters:

• Power Rating: May increase from 1W to higher ratings (2W or greater) without design impact, as higher power ratings provide additional thermal margin
• Temperature Coefficient: May vary within acceptable engineering limits
• Operating Temperature Range: May be adjusted if the substitute range encompasses the original operating window

The TLRP3A20WR010FTE qualifies as a direct substitute based on these criteria. It maintains identical resistance, tolerance, package, composition, and current sense functionality while offering increased power dissipation capability (2W versus 1W) and active product status.

Parameter Comparison

Engineering Selection Recommendations

The TLRP3A20WR010FTE is the qualified substitute for the obsolete TL3AR01FTDG. Selection of this substitute is based on the following engineering factors:

Product Status: The TL3AR01FTDG is obsolete, while the TLRP3A20WR010FTE maintains active product status with confirmed inventory availability (1677 pcs in stock). This ensures long-term supply chain viability.

Electrical Compatibility: Both parts maintain identical resistance (10 mOhms) and tolerance (±1%), ensuring equivalent electrical performance in current sense applications. The increased power rating (2W versus 1W) provides additional thermal headroom without compromising circuit functionality.

Compliance: Both parts are ROHS3 compliant with MSL 1 (Unlimited) moisture sensitivity rating, meeting regulatory and environmental requirements.

Physical Compatibility: Both parts use the 2512 (6432 Metric) package with identical footprint dimensions (0.252" L x 0.126" W). The substitute exhibits a maximum seated height of 0.035" (0.90mm) compared to 0.024" (0.60mm) for the original part. This height difference must be evaluated for clearance in the target application.

Temperature Performance: The substitute operates across -55°C to 170°C, which encompasses the upper temperature limit of the original part's -65°C to 170°C range. Applications requiring operation below -55°C require design review.

Frequently Asked Questions (FAQ)

Q: Can the TLRP3A20WR010FTE be used as a direct replacement for the TL3AR01FTDG?

A: Yes, the TLRP3A20WR010FTE qualifies as a direct substitute. Both parts share identical resistance (10 mOhms), tolerance (±1%), package (2512), composition (metal foil), and current sense functionality. The substitute's increased power rating (2W) and active product status make it suitable for replacement applications.

Q: What is the significance of the power rating increase from 1W to 2W?

A: The 2W power rating of the substitute provides increased thermal dissipation capability. In current sense applications, this allows the resistor to handle higher current levels or ambient temperatures without exceeding maximum junction temperature. The higher rating does not degrade performance in applications designed for 1W operation.

Q: Are there physical compatibility concerns with the height difference?

A: The substitute has a maximum seated height of 0.035" (0.90mm) compared to 0.024" (0.60mm) for the original part. This 0.011" (0.30mm) increase must be verified against PCB clearance requirements, solder reflow profiles, and component placement constraints in the target assembly.

Q: Does the temperature coefficient difference affect circuit performance?

A: The substitute exhibits ±100ppm/°C compared to ±75ppm/°C for the original part. This represents a 25ppm/°C increase in temperature-dependent resistance variation. For precision current measurement circuits, this difference must be evaluated against circuit tolerance budgets and temperature compensation requirements.

Q: What is the minimum operating temperature consideration?

A: The substitute operates from -55°C, while the original part operates from -65°C. Applications requiring operation below -55°C must use the original part or identify alternative components with lower temperature ratings.

Q: Are packaging format differences significant?

A: The original part is supplied in bulk packaging, while the substitute is supplied in Tape & Reel (TR) format. This difference affects handling, storage, and automated assembly processes but does not impact electrical or mechanical performance of the component itself.

Q: Do both parts meet the same regulatory compliance standards?

A: Yes, both parts are ROHS3 compliant with MSL 1 (Unlimited) moisture sensitivity rating. Both carry EAR99 ECCN classification and identical HTSUS codes (8533.21.0030), confirming equivalent regulatory and environmental compliance.