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Diodes Incorporated AH9248Z3-G1
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- Part No.:
- AH9248Z3-G1
- Manufacturer:
- Diodes Incorporated
- Category:
- Switches (Solid State)
- Package:
- TO-226-3, TO-92-3 Short Body
- Datasheet:
-
AH9248Z3-G1.pdf
- Description:
- MAGNETIC SWITCH OMNIPOLAR TO92S
- Quantity:
- Payment:
- Shipping:
Inventory:2,402
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Product details
Overview
AH9248Z3-G1 from Diodes Incorporated is an ultra-sensitive, micropower omnipolar Hall-effect switch with latched digital output, designed for battery-powered handheld equipment. It operates from 2.5V to 5.5V, consumes only 6–10 µA in sleep mode, and features chopper-stabilized magnetic switching with BOP ±30–55 G and BRP ±5–20 G. Its TO-92S-3 package enables compact integration in cover-detection applications like notebook lid switches.
For engineers reviewing the AH9248Z3-G1 datasheet, AH9248Z3-G1 pinout, AH9248Z3-G1 application, or AH9248Z3-G1 equivalent, key selection criteria include its omnidirectional magnetic sensitivity, sub-15 µA average supply current, 150 µs awake time, -40°C to +85°C operating range, and TO-92S-3 mechanical compatibility with space-constrained PCB layouts.
Technical Context
The AH9248Z3-G1 implements a chopper-stabilized Hall sensor with sleep/awake timing logic to reduce average current. Its bipolar magnetic detection (BOPN/BOPS and BRPN/BRPS) enables operation with either pole orientation without polarity alignment constraints.
Internal biasing, comparator hysteresis (10 G), and temperature-compensated thresholds ensure stable switching across -40°C to +85°C. The latched output remains static during sleep mode, eliminating need for external debouncing or wake-up controllers in low-duty-cycle systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage | 2.5 V to 5.5 V - supports single-cell Li-ion or dual-cell alkaline battery rails without regulation. |
| Average Current | 10–15 µA - enables multi-year battery life in infrequently actuated cover-switch applications. |
| Omnipolar BOP | ±30–55 G - detects magnet proximity regardless of pole orientation, simplifying mechanical assembly. |
| Hysteresis | 10 G - prevents chatter near threshold by ensuring clean, noise-immune state transitions. |
| Awake Time | 150 µs - provides rapid response to magnetic events while maintaining ultra-low duty cycle. |
| Sleep Current | 6–10 µA - minimizes quiescent drain during inactive periods in portable devices. |
| Operating Temp | -40°C to +85°C - validated for consumer electronics environments including laptop hinges and clamshell enclosures. |
Pinout & Package
Package: TO-92S-3 (3-pin plastic through-hole), optimized for manual assembly and high-reliability mechanical mounting in cover-switch mechanisms.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | VCC | Positive supply input - accepts 2.5–5.5 V; internal regulation not required. |
| 2 | GND | Reference ground - must be low-impedance connection to minimize magnetic noise coupling. |
| 3 | OUTPUT | Open-drain latched output - sinks up to 1 mA; requires external pull-up for logic-high level. |
Key Features
| Feature | Design Value |
|---|---|
| Chopper stabilization | Eliminates offset drift and 1/f noise, enabling consistent BOP/BRP over temperature and lifetime. |
| Omnipolar switching | Accepts either north or south pole activation - removes magnet polarity alignment requirement in assembly. |
| Sleep/awake logic | Reduces average current by >99% vs. continuous-sensing Hall switches, extending battery runtime. |
| Integrated hysteresis | 10 G magnetic hysteresis ensures robust immunity to mechanical vibration and field fluctuations. |
Applications
| Cover Switch in Notebook PC | Handheld Wireless Awake Switch |
|---|---|
|
Use Scenario: Detects lid open/close state in clamshell laptops to trigger sleep/wake transitions. IC Role / Device Role / Timing Role: Latched Hall switch providing persistent logic state during lid motion and static position hold. Use Value: Enables zero-power state retention during closed-lid sleep mode while responding within 150 µs upon opening. |
Use Scenario: Activates Bluetooth headset power-on when removed from charging case. IC Role / Device Role / Timing Role: Ultra-low-current magnetic presence detector initiating system wake sequence. Use Value: Reduces standby current to <15 µA, supporting >6-month shelf life in powered-off storage. |
| Magnet Switch in Low Duty Cycle Applications | Industrial Panel Door Monitor |
|
Use Scenario: Monitors access door status in battery-powered IoT sensors deployed in remote locations. IC Role / Device Role / Timing Role: Omnipolar Hall latch delivering reliable on/off reporting with minimal field alignment effort. Use Value: Eliminates need for precision magnet placement-±55 G BOP tolerance accommodates ±1 mm air gap variation. |
Use Scenario: Verifies safety interlock engagement on industrial control panel doors. IC Role / Device Role / Timing Role: Fail-safe magnetic position indicator with temperature-stable thresholds (-40°C to +85°C). Use Value: Maintains ±20 G BRP accuracy across full operating range, preventing false triggers in thermal cycling environments. |
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 | Higher sleep current (15 µA avg), no chopper stabilization, narrower BOP range (±25 G) | Limited to less demanding battery-life requirements; reduced magnetic noise immunity | Use only if cost sensitivity outweighs battery life and thermal stability needs |
| HAL1505 | Higher supply voltage (up to 24 V), no sleep mode, 3x higher IAVG (45 µA) | Designed for automotive 12 V systems; unsuitable for coin-cell or single-Li-ion operation | Select only for non-battery applications requiring extended voltage range and higher output drive |
Compared with AH1808 and HAL1505, the AH9248Z3-G1 uniquely combines sub-15 µA average current, chopper stabilization, and true omnipolarity-making it the sole choice for long-life, thermally robust, mechanically flexible cover-switch designs.
Availability
AH9248Z3-G1 is available at Aetrix Electronics and suitable for notebook lid detection, handheld device wake sensing, and industrial panel interlocks requiring stable component supply across extended production lifecycles.
Supply support for AH9248Z3-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 consumer, industrial, and computing markets.
The AH9248 belongs to Diodes' Hall-effect switch product line, engineered specifically for ultra-low-power, magnetically actuated user-interface functions in portable and battery-operated electronics.
FAQ
Is AH9248Z3-G1 pin-compatible with AH1808 in TO-92S-3?
Yes-both use identical TO-92S-3 pinout (Pin 1: VCC, Pin 2: GND, Pin 3: OUTPUT). However, AH1808 lacks chopper stabilization and draws higher average current (15 µA vs. 10–15 µA), so direct substitution may impact thermal drift and battery life in precision applications.
Does AH9248Z3-G1 require an external pull-up resistor?
Yes-the OUTPUT pin is open-drain. A typical 10–100 kΩ pull-up to VCC is required to establish a valid logic-high level. No internal pull-up is present; the datasheet notes that AH9249 (not AH9248) includes a built-in pull-up.
What is the maximum allowable air gap between AH9248Z3-G1 and magnet?
Based on BOP of ±30–55 G and typical neodymium magnets (e.g., N35, 3×1 mm), the maximum functional air gap is ~1.5 mm. Performance degrades linearly beyond this; design validation with actual magnet strength and orientation is recommended per application.
Why is AH9248Z3-G1 marked "Not Recommended for New Design"?
Diodes Incorporated classifies AH9248 as NRND due to newer-generation alternatives (e.g., AH9250) offering improved sensitivity and lower sleep current. AH9248Z3-G1 remains fully manufactured and supported for legacy designs, with no obsolescence timeline published.
AH9248Z3-G1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- TO-226-3, TO-92-3 Short Body
- Packaging:
- Bulk
- 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:
- Through Hole
- Supplier Device Package:
- TO-92S
AH9248Z3-G1 FAQ
1.How can I place an order for AH9248Z3-G1 through Aetrix?
Please submit a Request for Quotation (RFQ) for AH9248Z3-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 AH9248Z3-G1 reliable?
The price and inventory of AH9248Z3-G1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AH9248Z3-G1 is usually 5 days.
3.What payment methods are accepted for AH9248Z3-G1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AH9248Z3-G1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AH9248Z3-G1?
AH9248Z3-G1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AH9248Z3-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 AH9248Z3-G1?
For technical support, including AH9248Z3-G1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AH9248Z3-G1 requirements.
6.How does Aetrix verify that AH9248Z3-G1 is sourced from the original manufacturer or authorized distributors?
All AH9248Z3-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 AH9248Z3-G1 meets industry standards.
7.What is the process for return or replacement of AH9248Z3-G1?
All AH9248Z3-G1 units undergo pre-shipment inspection (PSI). If there is an issue with AH9248Z3-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 AH9248Z3-G1 part is unused and in its original packaging.
Return procedure for AH9248Z3-G1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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