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Home > Products > Sensors, Transducers > Magnetic Sensors > Linear, Compass (ICs)

Diodes Incorporated AH49FDNTR-G1

Name: AH49FDNTR-G1
Brand: Diodes Incorporated
SKU: AH49FDNTR-G1
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: AH49FDNTR-G1

Manufacturer:: Diodes Incorporated

Category:: Linear, Compass (ICs)

Package:: 6-UDFN Exposed Pad

Datasheet:: AH49FDNTR-G1.pdf

Description:: SENSOR HALL ANALOG 6UDFN

Quantity:: RFQ Add To RFQ list

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Inventory:23,097

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Product details

Overview

AH49FDNTR-G1 from Diodes Incorporated is a linear Hall effect sensor IC in U-DFN2020-6 (Type C) package, designed for contactless magnetic field sensing with proportional voltage output. It delivers 2.1 mV/G typical sensitivity, ±500 G linear range, 2.5 V quiescent output at 5 V supply, -40°C to +105°C operating temperature, and 60 Ω output resistance - used in position, liquid level, and motor control systems.

For engineers reviewing the AH49FDNTR-G1 datasheet, AH49FDNTR-G1 pinout, AH49FDNTR-G1 application, or AH49FDNTR-G1 equivalent, key selection criteria include magnetic polarity response (south-pole-up output rise), low-noise analog output eliminating external filtering, RoHS/Green compliance, and U-DFN2020-6 thermal performance under 3 mA supply current at 5 V.

Technical Context

The AH49FDNTR-G1 integrates a Hall plate, low-noise amplifier, and precision resistor network to deliver ratiometric linear output voltage proportional to magnetic flux density. Its internal architecture ensures <0.7% linearity error over ±500 G and 90 μV RMS noise (10 Hz–10 kHz bandwidth).

It operates from 3 V to 8 V supply, supports bidirectional magnetic field detection (± Gauss), and exhibits symmetrical output swing (V_OUT = 1.0 V to V_CC − 1.0 V). The U-DFN2020-6 package features an exposed GND pad for thermal and electrical performance enhancement.

Key Specifications

Parameter	Value and Actual Design Meaning
Supply Voltage	3 V to 8 V - enables direct interface with 3.3 V or 5 V microcontroller ADCs without level-shifting
Output Sensitivity	2.1 mV/G (typ) - provides 4.2 V full-scale swing across ±200 G, suitable for high-resolution analog sensing
Quiescent Output	2.5 V ±0.25 V at B = 0 G and V_CC = 5 V - establishes stable mid-rail reference for differential signal processing
Linear Range	±500 G - supports robust position/rotation sensing in industrial actuators and encoders
Output Noise	90 μV RMS (10 Hz–10 kHz) - eliminates need for external RC filtering in cost-sensitive consumer designs
ESD Rating	HBM ±6000 V - ensures reliability during PCB handling and assembly in high-volume manufacturing
Operating Temp	-40°C to +105°C - validated for under-hood automotive subsystems and industrial motor drives

Pinout & Package

U-DFN2020-6 (Type C) is a 2.0 mm × 2.0 mm × 0.6 mm low-profile, thermally enhanced surface-mount package with exposed GND pad. Pin 1 (OUT) is located at top-left corner (marking side); Pin 3 (V_CC) and Pin 5 (GND) are power/ground inputs; Pins 2, 4, and 6 are NC (no internal connection).

Pin/Terminal	Circuit Role	Design Meaning
1	OUT	Analog voltage output terminal - directly interfaces with ADC input or op-amp stage; 60 Ω source impedance limits capacitive loading effects
2	NC	No internal connection - may be left floating or tied to GND for mechanical stability; no electrical function
3	V_CC	Positive supply input - accepts 3–8 V DC; internal ESD protection enables robust operation in noisy environments
4	NC	No internal connection - no routing required; PCB copper fill may extend under this pad for thermal conduction
5	GND	Ground reference - connected internally to exposed center pad; must be soldered to large PCB GND plane for optimal thermal dissipation
6	NC	No internal connection - electrically inert; optional grounding improves mechanical anchoring on fine-pitch layouts

Key Features

Feature	Design Value
Single sourcing analog output	Current-sourcing only (no sinking capability) - simplifies interface design with pull-down resistors or ADC input bias networks
Low-noise output architecture	90 μV RMS noise floor - enables 12-bit+ effective resolution without external filtering components
Temperature-stable resistor network	±0.7% linearity drift over -40°C to +105°C - maintains accuracy in unregulated thermal environments
High ESD immunity	6000 V HBM - eliminates need for external TVS diodes in handheld or portable equipment
RoHS/Green compliance	Halogen- and antimony-free (<900 ppm Br/Cl, <1000 ppm Sb) - meets EU and global environmental directives

Applications

Position Sensing

Liquid Level Sensing

Use Scenario: Detecting linear displacement of ferrous target in HVAC damper actuator.

IC Role / Device Role / Timing Role: Linear Hall sensor converting magnetic field shift into analog voltage proportional to plunger position.

Use Value: Delivers ±500 G linear range and 2.1 mV/G sensitivity enabling sub-millimeter resolution without calibration.

Use Scenario: Monitoring fuel tank level via float-mounted magnet in automotive instrumentation.

IC Role / Device Role / Timing Role: Contactless analog transducer translating vertical magnet motion into ratiometric voltage output.

Use Value: -40°C to +105°C rating and 2.5 V quiescent output ensure stable zero-point across engine bay thermal cycles.

Motor Control

Rotary Encoders

Use Scenario: Commutation feedback in BLDC fan motors using embedded ring magnet.

IC Role / Device Role / Timing Role: Analog phase detection element providing sinusoidal back-EMF tracking signal.

Use Value: Low 3 mA supply current and 90 μV noise support efficient, low-heat operation in compact fan modules.

Use Scenario: High-density rotary encoder for industrial servo drives with multi-pole magnet wheel.

IC Role / Device Role / Timing Role: Magnetic field amplitude detector generating analog waveform for interpolation.

Use Value: ±500 G linear range and symmetrical output swing (1.0 V to V_CC−1.0 V) enable precise 12-bit angular reconstruction.

Equivalent & Alternatives

The following parts are listed as comparable options for similar linear Hall effect sensor applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
ALLEGRO A1302LLHLT-T	Higher sensitivity (5 mV/G), wider supply range (3–8.5 V), but larger SOIC-8 package and 5.5 mA ICC	Better SNR in low-field applications; unsuitable for space-constrained U-DFN2020-6 footprints	Select when higher sensitivity outweighs board area and power constraints
MELEXIS MLX90242ESE-AAA-000-SP	Programmable gain (1.5–5 mV/G), integrated EEPROM, 3.3 V only supply, SC-70 package	Enables field calibration and multi-curve compensation; incompatible with 5 V systems or high-temp industrial use	Select when system-level calibration and digital trimming are required

Compared with A1302LLHLT-T and MLX90242ESE-AAA-000-SP, AH49FDNTR-G1 offers the smallest footprint (2.0×2.0 mm), lowest power (3 mA @ 5 V), and widest temperature range (-40°C to +105°C), making it optimal for miniaturized, thermally demanding industrial sensors where fixed-gain analog output suffices.

Availability

AH49FDNTR-G1 is available at Aetrix Electronics and suitable for position sensing, liquid level monitoring, and motor control applications requiring stable component supply, RoHS/Green compliance, and high-volume tape-and-reel delivery.

Supply support for AH49FDNTR-G1 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Diodes Incorporated is a global semiconductor company specializing in discrete, analog, and mixed-signal solutions, with design, manufacturing, and distribution infrastructure across Asia, the Americas, and Europe.

The AH49F series belongs to Diodes' linear Hall effect sensor product line, engineered for high-accuracy, low-power, contactless magnetic measurement in commercial, industrial, and automotive subsystems.

FAQ

What is the magnetic polarity response of AH49FDNTR-G1?

The AH49FDNTR-G1 exhibits south-pole-up response: when a south magnetic pole approaches the marked surface (top side), the output voltage rises above the quiescent 2.5 V level; north pole exposure lowers it symmetrically. This behavior is consistent across TO92S and U-DFN2020-6 packages, unlike SC59 which reverses polarity due to die orientation.

Can AH49FDNTR-G1 operate from a 3.3 V supply?

Yes - AH49FDNTR-G1 is fully specified from 3 V to 8 V supply. At 3.3 V, quiescent output is ~1.65 V, output span narrows to ~0.8 V to 2.5 V, and sensitivity remains proportional (1.39 mV/G typ), enabling direct interface with 3.3 V microcontrollers without level-shifting circuitry.

Is the exposed pad on U-DFN2020-6 (Type C) electrically connected?

Yes - the center exposed pad is internally connected to GND. It must be soldered to a PCB GND plane for optimal thermal dissipation (230 mW max power rating) and EMI suppression. Leaving it unconnected degrades thermal performance and may increase noise susceptibility.

Does AH49FDNTR-G1 require external filtering components?

No - its integrated low-noise amplifier and precision resistor network achieve 90 μV RMS output noise (10 Hz–10 kHz), eliminating the need for external RC filters in most applications. Only high-frequency (>100 kHz) magnetic interference or long cable runs may warrant a 100 nF ceramic capacitor at the output.

AH49FDNTR-G1 Specifications

Product attributes: Attribute value

Manufacturer:: Diodes Incorporated

Series:: -

Package/Case:: 6-UDFN Exposed Pad

Packaging:: Tape & Reel (TR)

Product Status:: Active

Technology:: Hall Effect

Axis:: Single

Output Type:: Analog Voltage

Sensing Range:: ±80mT

Voltage - Supply:: 3V ~ 8V

Current - Supply (Max):: 4mA

Current - Output (Max):: -

Resolution:: -

Bandwidth:: -

Operating Temperature:: -40°C ~ 105°C

Grade:: -

Qualification:: -

Features:: -

Supplier Device Package:: U-DFN2020-6 (Type C)

Mounting Type:: Surface Mount

AH49FDNTR-G1 FAQ

1.How can I place an order for AH49FDNTR-G1 through Aetrix?

Please submit a Request for Quotation (RFQ) for AH49FDNTR-G1 on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.

2.Are the price and stock information for AH49FDNTR-G1 reliable?

The price and inventory of AH49FDNTR-G1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AH49FDNTR-G1 is usually 5 days.

3.What payment methods are accepted for AH49FDNTR-G1?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AH49FDNTR-G1 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for AH49FDNTR-G1?

AH49FDNTR-G1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your AH49FDNTR-G1 order is processed, you will receive an email with the shipment details and tracking number.

Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.

5.How can I obtain technical support or documentation for AH49FDNTR-G1?

For technical support, including AH49FDNTR-G1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AH49FDNTR-G1 requirements.

6.How does Aetrix verify that AH49FDNTR-G1 is sourced from the original manufacturer or authorized distributors?

All AH49FDNTR-G1 products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that AH49FDNTR-G1 meets industry standards.

7.What is the process for return or replacement of AH49FDNTR-G1?

All AH49FDNTR-G1 units undergo pre-shipment inspection (PSI). If there is an issue with AH49FDNTR-G1, returns or replacements are accepted under the following conditions:

1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.

2.The issue is reported within 90 days of delivery.

3.The AH49FDNTR-G1 part is unused and in its original packaging.

Return procedure for AH49FDNTR-G1:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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