TL3AR022F Equivalent & Substitute Parts

Part Overview

The TL3AR022F is a 22 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 low-resistance applications requiring high accuracy and stable performance across temperature ranges from -65°C to 170°C. The part is classified as obsolete, necessitating identification of equivalent and substitute components for ongoing design requirements and procurement needs.

Substiute Parts

TL3AR022F

TE Connectivity Passive ProductIn Stock: 15608TL3AR022F Datasheet

Current PartRFQ

TLRP3A20WR022FTE

TE Connectivity Passive ProductIn Stock: 4134TLRP3A20WR022FTE Datasheet

MFR RecommendedRFQ

KRL3264-C-R022-F-T1

SusumuIn Stock: 8302KRL3264-C-R022-F-T1 Datasheet

UpgradeRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the TL3AR022F is determined by the following critical parameters:

Primary Matching Criteria:

• Resistance value: 22 mOhms
• Tolerance: ±1%
• Package / Case: 2512 (6432 Metric)
• Composition: Metal Foil or Metal Element
• Features: Current Sense capability
• RoHS Status: ROHS3 Compliant
• Moisture Sensitivity Level: 1 (Unlimited)

Secondary Compatibility Factors:

• Power rating equal to or greater than 1W
• Operating temperature range encompassing or exceeding -65°C to 170°C
• Temperature coefficient within acceptable variance for precision applications
• Number of terminations: 2

The identified substitute parts meet these criteria with variations in power rating, temperature coefficient, and operating temperature range that do not compromise functional equivalence for current sense applications.

Parameter Comparison

Engineering Selection Recommendations

TLRP3A20WR022FTE (TE Connectivity Passive Product): This substitute offers increased power rating (2W versus 1W) while maintaining identical resistance, tolerance, and temperature coefficient specifications. The part is active in production status and includes automotive AEC-Q200 qualification with anti-sulfur protection. The operating temperature range (-55°C to 170°C) covers the upper portion of the original specification. This substitute is suitable for applications where enhanced thermal performance and automotive-grade reliability are beneficial.

KRL3264-C-R022-F-T1 (Susumu): This substitute maintains the 1W power rating and metal foil composition of the original part while providing improved temperature coefficient performance (±50ppm/°C versus ±75ppm/°C). The part carries automotive AEC-Q200 qualification and extends the upper operating temperature limit to 175°C. The physical dimensions are marginally smaller (6.30mm x 3.10mm versus 6.40mm x 3.20mm). This substitute is suitable for precision current sense applications requiring tighter temperature stability and automotive-grade qualification.

Both substitutes are active products with ROHS3 compliance and unlimited moisture sensitivity rating, providing long-term procurement availability compared to the obsolete TL3AR022F.

Frequently Asked Questions (FAQ)

Q: Can TLRP3A20WR022FTE replace TL3AR022F in all applications?

A: TLRP3A20WR022FTE is functionally equivalent for current sense applications. The 2W power rating provides additional thermal margin. The operating temperature minimum is -55°C compared to -65°C for the original part. Applications requiring operation below -55°C require evaluation against specific design requirements.

Q: What is the advantage of KRL3264-C-R022-F-T1 over the original TL3AR022F?

A: KRL3264-C-R022-F-T1 provides superior temperature coefficient stability (±50ppm/°C versus ±75ppm/°C), extended upper operating temperature (175°C versus 170°C), and automotive AEC-Q200 qualification. The metal foil composition and 1W power rating match the original specification.

Q: Are there physical dimension differences between these parts?

A: All three parts use the 2512 (6432 Metric) package. KRL3264-C-R022-F-T1 has slightly smaller dimensions (6.30mm x 3.10mm versus 6.40mm x 3.20mm) and lower maximum seated height (0.70mm versus 0.60mm for TL3AR022F and 0.90mm for TLRP3A20WR022FTE). These differences are within standard PCB layout tolerances for 2512 package footprints.

Q: Which substitute is recommended for automotive applications?

A: Both TLRP3A20WR022FTE and KRL3264-C-R022-F-T1 carry automotive AEC-Q200 qualification. TLRP3A20WR022FTE includes additional anti-sulfur protection. Selection depends on specific automotive environmental requirements and thermal design margins.

Q: What is the difference between metal foil and metal element composition?

A: Both compositions are suitable for current sense applications. Metal foil (TL3AR022F and KRL3264-C-R022-F-T1) and metal element (TLRP3A20WR022FTE) provide the required precision and stability for low-resistance measurement. Composition selection does not affect functional equivalence for the specified resistance and tolerance values.

Q: Can these parts be used interchangeably in existing designs?

A: Yes, for applications where the operating temperature range and power rating requirements are met. Designs operating below -55°C require the original TL3AR022F or equivalent with extended low-temperature rating. Designs with thermal constraints may benefit from the 2W rating of TLRP3A20WR022FTE.