TL3AR051F Equivalent & Substitute Parts

Part Overview

The TL3AR051F is a 51 milliohm, ±1% tolerance, 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 requiring low resistance values with tight tolerance specifications.

The TL3AR051F carries an Obsolete product status. Locating equivalent substitute parts is necessary to maintain design continuity and ensure component availability for new production builds, repairs, and system upgrades where this resistor specification is required.

Substiute Parts

TL3AR051F

TE Connectivity Passive ProductIn Stock: 12045TL3AR051F Datasheet

Current PartRFQ

TLM3ADR051FTE

TE Connectivity Passive ProductIn Stock: 863TLM3ADR051FTE Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the TL3AR051F is determined by the following critical parameters that must remain constant or compatible:

Mandatory Matching Parameters:

• Resistance value: 51 mOhms
• Tolerance: ±1%
• Power rating: 1W
• Package type: 2512 (6432 Metric)
• Composition: Metal Foil
• Application feature: Current Sense

Allowable Variation Parameters:

• Temperature coefficient (±75ppm/°C to ±50ppm/°C)
• Operating temperature range (within specified limits)
• Physical dimensions (within package specification tolerance)
• Packaging format (Cut Tape to Tape & Reel)
• Product status (Obsolete to Active)

The substitute part TLM3ADR051FTE maintains identical electrical specifications for resistance, tolerance, power rating, and package designation. Variations in temperature coefficient and operating temperature range remain within acceptable engineering tolerances for current sense applications. The transition from Cut Tape to Tape & Reel packaging reflects standard manufacturing evolution while maintaining functional equivalence.

Parameter Comparison

Engineering Selection Recommendations

The TLM3ADR051FTE is the manufacturer-recommended substitute for the obsolete TL3AR051F. Both components are manufactured by TE Connectivity Passive Product and maintain identical electrical performance for current sense applications.

Compliance and Certification: Both parts carry ROHS3 compliance and REACH Unaffected status, ensuring regulatory alignment for commercial and industrial applications. Moisture Sensitivity Level 1 (Unlimited) classification applies to both components, indicating no special moisture handling requirements during storage or assembly.

Product Status Consideration: The TLM3ADR051FTE carries Active product status, ensuring long-term availability and continued manufacturing support. Selection of this substitute eliminates obsolescence risk associated with the TL3AR051F.

Packaging Transition: The shift from Cut Tape to Tape & Reel packaging reflects standard manufacturing practices for active production components. Tape & Reel format provides improved handling efficiency for automated assembly processes while maintaining component integrity.

Thermal Performance: The TLM3ADR051FTE exhibits improved temperature coefficient performance (±50ppm/°C versus ±75ppm/°C), resulting in enhanced stability across temperature variations. The operating temperature range of -55°C ~ 155°C covers standard industrial and commercial application requirements.

Frequently Asked Questions (FAQ)

Q: Can the TLM3ADR051FTE directly replace the TL3AR051F in existing designs?

A: Yes. Both components share identical resistance (51 mOhms), tolerance (±1%), power rating (1W), composition (Metal Foil), and 2512 package designation. The substitute maintains functional equivalence for current sense applications.

Q: What is the significance of the temperature coefficient difference?

A: The TLM3ADR051FTE temperature coefficient of ±50ppm/°C is superior to the TL3AR051F specification of ±75ppm/°C. This represents improved resistance stability across temperature variations, providing enhanced measurement accuracy in current sense circuits.

Q: Are there physical dimension differences that affect PCB layout?

A: Minor dimensional variations exist within 2512 package tolerance. The TLM3ADR051FTE measures 0.248" L x 0.124" W (6.30mm x 3.15mm) compared to the TL3AR051F at 0.252" L x 0.126" W (6.40mm x 3.20mm). Height difference is 0.028" (0.70mm) versus 0.024" (0.60mm). These variations remain within standard 2512 package specifications and do not require PCB redesign.

Q: What packaging format change occurs with substitution?

A: The TL3AR051F is supplied in Cut Tape (CT) format, while the TLM3ADR051FTE is supplied in Tape & Reel (TR) format. Tape & Reel packaging is standard for active production components and provides improved compatibility with automated assembly equipment.

Q: Do both parts meet the same regulatory requirements?

A: Yes. Both the TL3AR051F and TLM3ADR051FTE are ROHS3 Compliant, REACH Unaffected, and carry Moisture Sensitivity Level 1 (Unlimited) classification. Regulatory compliance is maintained across the substitution.

Q: Why is the TL3AR051F listed as Obsolete?

A: Obsolete status indicates the manufacturer has discontinued production of this component. The TLM3ADR051FTE represents the active production equivalent, ensuring continued availability and manufacturing support for this resistor specification.

Q: Are there inventory considerations for component selection?

A: The TLM3ADR051FTE carries Active product status with current manufacturing availability. The TL3AR051F, while listed as Obsolete, may have limited existing inventory. For new designs and production builds, the TLM3ADR051FTE is the appropriate selection.