TL3AR027FTDG Equivalent & Substitute Parts

Part Overview

The TL3AR027FTDG is a 27 milliohm, ±1% tolerance, 1W metal foil chip resistor manufactured by TE Connectivity Passive Product in the 2512 (6432 Metric) package. This component is designed for current sensing applications and operates across a temperature range of -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

TL3AR027FTDG

TE Connectivity Passive ProductIn Stock: 811TL3AR027FTDG Datasheet

Current PartRFQ

TLM3ADR027FTE

TE Connectivity Passive ProductIn Stock: 1115TLM3ADR027FTE Datasheet

MFR RecommendedRFQ

KRL3264-C-R027-F-T1

SusumuIn Stock: 4591KRL3264-C-R027-F-T1 Datasheet

UpgradeRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the TL3AR027FTDG is determined by strict equivalence across the following critical parameters:

Mandatory Matching Parameters:

• Resistance value: 27 mOhms
• Tolerance: ±1%
• Power rating: 1W
• Composition: Metal Foil
• Package / Case: 2512 (6432 Metric)
• Features: Current Sense capability
• Number of Terminations: 2

Acceptable Variation Parameters:

• Temperature Coefficient: Substitute parts may have improved specifications (lower ppm/°C values)
• Operating Temperature Range: Substitute parts may have equal or extended ranges
• Product Status: Active substitutes are preferred over obsolete parts
• Packaging Format: Tape & Reel (TR) packaging is compatible with the original dry-pack format for component-level substitution

The identified substitute parts maintain full electrical and mechanical compatibility with the original TL3AR027FTDG while offering improved or equivalent performance characteristics.

Parameter Comparison

Engineering Selection Recommendations

TLM3ADR027FTE (TE Connectivity Passive Product)

This substitute is the manufacturer-recommended equivalent. It maintains identical electrical specifications (27 mOhms, ±1%, 1W, metal foil composition) and package format (2512). The TLM3ADR027FTE offers improved temperature coefficient performance (±50ppm/°C versus ±75ppm/°C) and is currently in active production status. This part is suitable for direct replacement in applications where the operating temperature range of -55°C to 155°C is acceptable. ROHS3 compliance and unlimited moisture sensitivity level are maintained.

KRL3264-C-R027-F-T1 (Susumi)

This substitute provides equivalent electrical performance with additional automotive qualification (AEC-Q200). The KRL3264-C-R027-F-T1 offers an extended upper operating temperature limit of 175°C, compared to the original part's 170°C. Temperature coefficient performance is equivalent to the TLM3ADR027FTE at ±50ppm/°C. This part is recommended for applications requiring automotive-grade reliability or extended high-temperature operation. ROHS3 compliance and unlimited moisture sensitivity level are maintained.

Both substitute parts are in active production and provide superior or equivalent performance characteristics relative to the obsolete TL3AR027FTDG.

Frequently Asked Questions (FAQ)

Q: Can the TLM3ADR027FTE be used as a direct replacement for the TL3AR027FTDG?

A: Yes. Both parts share identical resistance (27 mOhms), tolerance (±1%), power rating (1W), composition (metal foil), and package format (2512). The TLM3ADR027FTE is the manufacturer-recommended substitute and is currently in active production.

Q: What is the difference between the TLM3ADR027FTE and KRL3264-C-R027-F-T1?

A: Both parts provide equivalent electrical performance for current sensing applications. The KRL3264-C-R027-F-T1 includes automotive AEC-Q200 qualification and extends the upper operating temperature to 175°C. Selection depends on application requirements for automotive compliance and temperature range.

Q: Are there physical size differences between the main part and substitutes?

A: Minor dimensional variations exist within the 2512 package specification. The TL3AR027FTDG measures 0.252" L x 0.126" W with a maximum seated height of 0.024". The TLM3ADR027FTE measures 0.248" L x 0.124" W with a maximum seated height of 0.029". The KRL3264-C-R027-F-T1 measures 0.248" L x 0.122" W with a maximum seated height of 0.028". These variations remain within standard 2512 package tolerances and do not affect PCB layout compatibility.

Q: Does the temperature coefficient difference affect substitution?

A: The TL3AR027FTDG has a temperature coefficient of ±75ppm/°C, while both substitutes offer ±50ppm/°C. This represents improved stability in the substitute parts and does not prevent substitution. Applications requiring the original specification must retain the TL3AR027FTDG.

Q: What is the operating temperature range difference?

A: The TL3AR027FTDG operates from -65°C to 170°C. The TLM3ADR027FTE operates from -55°C to 155°C. The KRL3264-C-R027-F-T1 operates from -55°C to 175°C. Substitution is valid only when the application's temperature requirements fall within the substitute part's specified range.

Q: Are both substitute parts RoHS3 compliant?

A: Yes. Both the TLM3ADR027FTE and KRL3264-C-R027-F-T1 are ROHS3 compliant with unlimited moisture sensitivity level (MSL 1), matching the original part's compliance status.

Q: What packaging formats are available for the substitute parts?

A: Both substitute parts are supplied in Tape & Reel (TR) format, which is standard for high-volume production and automated assembly processes.