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Diodes Incorporated AH9248NTR-G1
- Part No.:
- AH9248NTR-G1
- Manufacturer:
- Diodes Incorporated
- Category:
- Switches (Solid State)
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
AH9248NTR-G1.pdf
- Description:
- MAGNETIC SWITCH OMNIPOL SOT23-3
- Quantity:
- Payment:
- Shipping:
Inventory:1,744
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Product details
Overview
AH9248NTR-G1 from Diodes Incorporated is an ultra-sensitive, micropower omnipolar Hall-effect switch with digital latched output, designed for battery-powered handheld equipment. It operates from 2.5V to 5.5V, draws only 6–10 µA in sleep mode and 2–4 mA awake, and switches on with either north or south magnetic pole (BOP ±30–55 G, BRP ±5–20 G). Its chopper-stabilized architecture ensures stable magnetic thresholds across temperature.
For engineers reviewing the AH9248NTR-G1 datasheet, AH9248NTR-G1 pinout, AH9248NTR-G1 application, or AH9248NTR-G1 equivalent, this device is selected for low-duty-cycle magnet sensing where supply current, thermal stability, and bipolar field response are critical - especially in cover detection, wake-on-approach, and portable device proximity switching.
Technical Context
The AH9248NTR-G1 implements a chopper-stabilized Hall sensor with integrated sleep/awake timing logic to reduce average current. Its comparator uses hysteresis (BHYS ≥10 G) to prevent output oscillation near switching thresholds, and its output stage is open-drain with internal pull-up not present (AH9249 variant includes it).
It operates across –40°C to +85°C with supply voltage tolerance up to 7 V absolute max, and features ESD robustness of 200 V (MM). The device enters sleep mode automatically after ~90–120 ms of no magnetic activity, resuming full sensitivity within 150 µs upon field detection.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 2.5 V to 5.5 V - supports single-cell Li-ion, alkaline, or coin-cell power rails without regulation. |
| Sleep Current (ISL) | 6–10 µA - enables multi-year battery life in infrequently activated sensors (e.g., clamshell lid detection). |
| Omnipolar BOP | ±30–55 G - activates on either pole orientation, simplifying mechanical magnet placement in consumer enclosures. |
| Hysteresis (BHYS) | ≥10 G - prevents chatter during slow or noisy magnetic transitions near threshold. |
| Awake Mode Time (tAW) | 150 µs max - ensures responsive wake-up for real-time user interaction (e.g., PDA cover-open event). |
| Operating Temperature | –40°C to +85°C - qualified for industrial and extended-temperature portable environments. |
| Output Type | Open-drain - allows flexible pull-up voltage selection and wired-OR interfacing with microcontroller GPIO. |
Pinout & Package
AH9248NTR-G1 is packaged in SOT-23-3 - a 2.9 mm × 2.8 mm surface-mount package with gull-wing leads, optimized for space-constrained PCB layouts in handheld devices.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (SOT-23-3) | VCC | Positive supply input - must be decoupled with ≥10 nF ceramic capacitor near pin for chopper noise immunity. |
| 2 (SOT-23-3) | OUTPUT | Open-drain output - sinks current when active (low); requires external pull-up for logic-high state. |
| 3 (SOT-23-3) | GND | Analog/digital ground reference - shared return path for Hall sensor, amplifier, and output driver. |
Key Features
| Feature | Design Value |
|---|---|
| Micropower Sleep Mode | 6–10 µA quiescent current - extends battery life in intermittent-sensing applications like notebook lid switches. |
| Chopper Stabilization | 15 kHz chopping frequency - eliminates offset drift and improves BOP/BRP stability over temperature and time. |
| Omnipolar Magnetic Response | No polarity dependency - eliminates need for magnet orientation control during assembly, reducing manufacturing cost. |
| Wide Supply Range | 2.5–5.5 V operation - compatible with unregulated battery sources across product generations without redesign. |
| RoHS/Green Compliance | Lead-free, halogen- and antimony-free - meets global environmental compliance requirements for consumer electronics. |
Applications
| Cover Switch in Notebook PC/PDA | Handheld Wireless Awake Switch |
|---|---|
Use Scenario: Detecting clamshell lid open/close state in ultraportable computing devices. IC Role / Device Role / Timing Role: Latched Hall switch providing persistent logic-level signal during lid motion and static position hold. Use Value: Enables instant system wake/suspend with <150 µs latency and sub-10 µA standby draw, preserving battery charge between sessions. |
Use Scenario: Activating Bluetooth headset or smartwatch display upon magnet-aided case removal. IC Role / Device Role / Timing Role: Proximity-triggered wake controller that transitions from deep sleep to active sensing on field detection. Use Value: Reduces average system current by >99% versus always-on Hall sensors, enabling months of shelf-life in shipped devices. |
| Magnet Switch in Low Duty Cycle Applications | Industrial Panel Door Interlock |
Use Scenario: Monitoring access panel status in battery-powered IoT gateways or remote telemetry units. IC Role / Device Role / Timing Role: Omnipolar latch detecting presence/absence of a fixed magnet mounted on hinged enclosure. Use Value: Eliminates mechanical switch wear and contact bounce while maintaining <10 µA system idle current under ambient temperature variation. |
Use Scenario: Safety interlock for removable service panels on industrial HMI enclosures. IC Role / Device Role / Timing Role: Fail-safe position monitor verifying panel closure before enabling high-voltage subsystems. Use Value: Provides reliable, polarity-agnostic detection across wide temperature range (–40°C to +85°C) without calibration. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar omnipolar Hall-effect switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AH1808 | Lower sensitivity (BOP ±60 G), no sleep mode - fixed 3.5 mA operating current. | Not suitable for ultra-low-power or battery-critical designs; better for cost-sensitive, always-on systems. | Select AH1808 only if continuous sensing is required and average current >3 mA is acceptable. |
| HAL1506 | Higher supply range (2.7–24 V), integrated pull-up, but 25 µA sleep current - 2.5× higher than AH9248. | Targeted at automotive body electronics; less optimal for compact consumer devices due to larger SOIC-8 footprint. | Prefer HAL1506 only when wide-input voltage tolerance or built-in pull-up simplifies BOM in 12 V systems. |
Compared with AH1808 and HAL1506, AH9248NTR-G1 uniquely balances ultra-low sleep current (6–10 µA), omnipolar response, and SOT-23-3 footprint - making it the only choice for space- and energy-constrained portable applications requiring latched, polarity-agnostic switching.
Availability
AH9248NTR-G1 is available at Aetrix Electronics and suitable for cover detection, wake-on-approach, and low-duty-cycle magnet sensing requiring stable component supply across consumer electronics, industrial HMIs, and portable IoT endpoints.
Supply support for AH9248NTR-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 manufacturer of discrete semiconductors and analog ICs, specializing in power management, signal integrity, and sensing solutions for high-volume electronics markets.
AH9248 belongs to Diodes' Hall-effect switch product line, engineered specifically for ultra-low-power, battery-operated portable devices requiring reliable, maintenance-free position and proximity detection.
FAQ
Is AH9248NTR-G1 pin-compatible with AH9248Z3-G1 or AH9248DNTR-G1?
Yes - all AH9248 variants share identical pin numbering (VCC, OUTPUT, GND) and functional behavior. However, package dimensions differ: SOT-23-3 (AH9248NTR-G1), TO-92S-3 (Z3), and DFN-2×2-3 (DNTR). PCB layout and thermal design must match the specific package's footprint and soldering profile.
Does AH9248NTR-G1 include an internal pull-up resistor on the OUTPUT pin?
No - AH9248NTR-G1 has an open-drain output without internal pull-up. The AH9249 variant includes a built-in pull-up. For AH9248NTR-G1, an external pull-up resistor (typically 10–100 kΩ to VCC) is required to establish a valid logic-high level at the output node.
What is the maximum magnetic field the AH9248NTR-G1 can withstand without damage?
The AH9248NTR-G1 has no specified magnetic field damage limit - its magnetic characteristics are guaranteed from ±55 G (BOP) to unlimited Gauss per Absolute Maximum Ratings. Permanent demagnetization or sensor saturation is not observed below 10,000 G, and typical application fields remain well under 200 G.
Why is AH9248 marked "NRND" (Not Recommended for New Design)?
Diodes Incorporated classifies AH9248 as NRND due to newer-generation alternatives (e.g., AH9250) offering improved sensitivity, lower sleep current, or enhanced ESD rating. However, AH9248NTR-G1 remains fully manufactured, stocked, and supported for legacy design continuity and cost-sensitive volume applications where its specifications meet requirements.
AH9248NTR-G1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- TO-236-3, SC-59, SOT-23-3
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Function:
- Omnipolar Switch
- Technology:
- Hall Effect
- Polarization:
- North Pole, South Pole
- Sensing Range:
- ±5.5mT Trip, ±0.5mT Release
- Test Condition:
- 25°C
- Voltage - Supply:
- 2.5V ~ 5.5V
- Current - Supply (Max):
- 1.5µA
- Current - Output (Max):
- 2mA
- Output Type:
- Open Drain
- Features:
- -
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-3
AH9248NTR-G1 FAQ
1.How can I place an order for AH9248NTR-G1 through Aetrix?
Please submit a Request for Quotation (RFQ) for AH9248NTR-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 AH9248NTR-G1 reliable?
The price and inventory of AH9248NTR-G1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AH9248NTR-G1 is usually 5 days.
3.What payment methods are accepted for AH9248NTR-G1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AH9248NTR-G1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AH9248NTR-G1?
AH9248NTR-G1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AH9248NTR-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 AH9248NTR-G1?
For technical support, including AH9248NTR-G1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AH9248NTR-G1 requirements.
6.How does Aetrix verify that AH9248NTR-G1 is sourced from the original manufacturer or authorized distributors?
All AH9248NTR-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 AH9248NTR-G1 meets industry standards.
7.What is the process for return or replacement of AH9248NTR-G1?
All AH9248NTR-G1 units undergo pre-shipment inspection (PSI). If there is an issue with AH9248NTR-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 AH9248NTR-G1 part is unused and in its original packaging.
Return procedure for AH9248NTR-G1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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