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Diodes Incorporated AH3323Q-W-7
- Part No.:
- AH3323Q-W-7
- Manufacturer:
- Diodes Incorporated
- Category:
- Switches (Solid State)
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
AH3323Q-W-7.pdf
- Description:
- HALL UNIPOLAR SWITCH SC59 T&R 3K
- Quantity:
- Payment:
- Shipping:
Inventory:3,674
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Product details
Overview
AH3323Q-W-7 from Diodes Incorporated is an AEC-Q100 Grade 0 qualified automotive Hall-effect unipolar switch IC in SC59 package, designed for position and proximity sensing in harsh environments. It operates from 3.0V to 28V, features open-drain output with 60mA current limit, 55G typical operate point (BOP), 35G typical release point (BRP), and functions reliably from −40°C to +150°C - deployed in seatbelt buckles and transmission gear position detection.
For engineers reviewing the AH3323Q-W-7 datasheet, AH3323Q-W-7 pinout, AH3323Q-W-7 application, or AH3323Q-W-7 equivalent, key selection criteria include magnetic sensitivity tolerance (±17G BOP hysteresis), load dump protection (40V transient), chopper-stabilized temperature stability, and South-pole activation polarity specific to SC59's non-marking-side orientation.
Technical Context
The AH3323Q-W-7 implements a chopper-stabilized Hall sensor with dynamic offset cancellation and internal bandgap-regulated supply, enabling minimal switch-point drift (<±10G over −40°C to +150°C) and superior immunity to mechanical stress and RF noise. Its architecture integrates low-pass filtering and sample-and-hold circuitry to reject EMI while maintaining sub-10µs response time.
It uses a single open-drain NMOS output stage with built-in overcurrent limiting (30–55mA) and zener clamping on both VDD and OUTPUT pins. The device requires South-pole magnetic activation toward the non-part-marking side of the SC59 package, with hysteresis of 12–28G to prevent chatter in noisy environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| BOP (Operate Point) | 38–72 G: Switches ON when South pole exceeds lower threshold; enables reliable detection in low-field automotive mechanisms. |
| BRP (Release Point) | 20–50 G: Maintains ON state until field drops below this level; provides 12–28 G hysteresis to suppress false toggling. |
| VDD Range | 3.0–28 V: Supports direct connection to automotive battery rails including cold-crank (≥6V) and load-dump transients (up to 40V absolute max). |
| Output Type | Open-drain NMOS: Requires external pull-up; sinks up to 60mA; compatible with 3.3V/5V/12V logic interfaces. |
| Operating Temp | −40°C to +150°C: Validated for under-hood and cabin-mounted applications per AEC-Q100 Grade 0 requirements. |
| ESD Robustness | HBM 8kV / CDM 1kV: Withstands handling and system-level electrostatic events without latch-up or parametric shift. |
| Startup Time | 10 µs typical: Output becomes valid within 10µs after VDD reaches 3V, enabling fast system wake-up in safety-critical modules. |
Pinout & Package
SC59 package: 3-pin surface-mount, 1.3mm height, JEDEC TO-92 compatible outline with gull-wing leads. Pin 1 = VDD, Pin 2 = GND, Pin 3 = OUTPUT - configured for South-pole activation on the non-marking side.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | VDD | Power input with integrated reverse-blocking diode and 28V zener clamp; accepts 3–28V DC with 40V transient rating. |
| 2 | GND | Reference ground for internal regulator and Hall sensor; must be low-impedance to minimize noise coupling. |
| 3 | OUTPUT | Open-drain NMOS output with 60mA continuous sink capability and zener-clamped voltage (≤32V off-state). |
Key Features
| Feature | Design Value |
|---|---|
| Chopper stabilization | Reduces thermal drift of BOP/BRP to <±0.1G/°C and eliminates offset accumulation over time and temperature. |
| Load dump protection | Withstands 40V transients per ISO 7637-2 Pulse 5a without external TVS; internal zener clamps VDD at 28V (5mA test). |
| Magnetic polarity configuration | SC59 variant activates with South pole applied to non-marking side - verified mechanical mounting alignment for gear position sensors. |
| Robust output stage | Integrated overcurrent limit (30–55mA) prevents latch-up during short-circuit faults; output remains functional after fault clearance. |
| AEC-Q100 Grade 0 qualification | Validated for 150°C junction operation and 1000-hour HTOL; supports automotive safety systems requiring zero latent failure risk. |
Applications
| Seatbelt Buckle Detection | Transmission Gear Position Sensing |
|---|---|
Use Scenario: Detect buckle engagement status in driver/passenger seats using magnet-actuated reed-switch replacement. IC Role / Device Role / Timing Role: Unipolar Hall switch providing latched ON/OFF signal to body control module via open-drain interface. Use Value: Eliminates mechanical wear and contact bounce; operates reliably across −40°C to +85°C cabin temperature range with <10µs response latency. | Use Scenario: Identify PRNDL position in automatic transmissions by sensing rotating cam magnet position. IC Role / Device Role / Timing Role: Magnetic position detector feeding discrete gear-state signals to transmission control unit (TCU). Use Value: 55G BOP ensures consistent switching despite magnet aging or air-gap variation; hysteresis prevents misreads during gear transition vibration. |
| Steering Column Lock/Immobilizer | Door/Trunk Closure Monitoring |
Use Scenario: Confirm mechanical lock engagement in steering column anti-theft systems using embedded magnet and fixed sensor. IC Role / Device Role / Timing Role: Proximity switch signaling lock/unlock state to immobilizer ECU via CAN gateway interface. Use Value: AEC-Q100 Grade 0 rating guarantees operation at 150°C near engine heat sources; reverse-voltage protection (-18V) guards against battery reversal. | Use Scenario: Monitor door/trunk open/closed state in vehicle access systems without physical switches or wiring harness strain. IC Role / Device Role / Timing Role: Contactless position indicator generating wake-up interrupt to door module microcontroller. Use Value: 3.0–28V supply range accommodates 12V/24V architectures; 8kV HBM ESD withstand protects against assembly-line static discharge. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Hall-effect unipolar switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AL3323Q-W-7 | Same pinout and sensitivity (BOP 38–72G), but lacks AEC-Q100 qualification and 40V load dump rating. | Restricted to non-safety-critical industrial or consumer use; not PPAP-capable. | Select only if automotive qualification and IATF 16949 traceability are unnecessary. |
| TLE4913-2XUMA1 | Higher BOP (70–110G), bipolar operation, integrated diagnostics; requires separate VDD/GND decoupling and higher quiescent current (5.5mA). | Used in ASIL-B systems with diagnostic coverage; adds complexity for simple on/off detection. | Choose only when functional safety diagnostics or bipolar field detection are required. |
Compared with AL3323Q-W-7, AH3323Q-W-7 delivers certified automotive robustness and transient resilience; versus TLE4913-2XUMA1, it offers simpler integration, lower power, and cost efficiency for basic unipolar sensing - without diagnostic overhead.
Availability
AH3323Q-W-7 is available at Aetrix Electronics and suitable for seatbelt buckle detection, transmission gear position sensing, and steering column lock monitoring requiring stable component supply across automotive production lifecycles.
Supply support for AH3323Q-W-7 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 manufacturer specializing in discrete, analog, and mixed-signal devices, with design and manufacturing facilities certified to IATF 16949 for automotive-grade components.
The AH332XQ product line targets high-reliability automotive position sensing, delivering AEC-Q100 Grade 0 Hall switches optimized for wide voltage operation, thermal stability, and mechanical ruggedness in safety-critical subsystems.
FAQ
What magnetic polarity activates the AH3323Q-W-7?
The AH3323Q-W-7 requires a South pole applied to the non-part-marking side of the SC59 package to activate. This polarity orientation is fixed per package type and differs from SOT23 (Type S) and SIP-3 variants, which require South pole on the marking side. Incorrect orientation results in no switching action.
Does AH3323Q-W-7 require an external pull-up resistor?
Yes - the AH3323Q-W-7 has an open-drain output and must be used with an external pull-up resistor (RL) to the host logic rail (e.g., 3.3V, 5V, or 12V). Typical RL values range from 1kΩ to 10kΩ depending on rise-time requirements and bus capacitance; 10kΩ is recommended for low-power applications.
Can AH3323Q-W-7 operate directly from a 24V truck battery?
Yes - the AH3323Q-W-7 is rated for continuous operation from 3.0V to 28V and withstands 40V load-dump transients per ISO 7637-2. It includes internal reverse-blocking diode and zener clamping on VDD, eliminating need for external protection in standard 24V commercial vehicle applications.
Is AH3323Q-W-7 pin-compatible with other AH332XQ variants?
Yes - all AH332XQ variants (e.g., AH3322Q, AH3324Q, AH3326Q) share identical SC59, SOT23 (Type S), and SIP-3 footprints and pinouts. Only magnetic sensitivity (BOP/BRP) and hysteresis differ between part numbers; electrical and mechanical interfaces remain fully interchangeable.
AH3323Q-W-7 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:
- Active
- Function:
- Unipolar Switch
- Technology:
- Hall Effect
- Polarization:
- South Pole
- Sensing Range:
- 7.2mT Trip, 2mT Release
- Test Condition:
- 25°C
- Voltage - Supply:
- 3V ~ 28V
- Current - Supply (Max):
- 4mA
- Current - Output (Max):
- 60mA
- Output Type:
- Open Drain
- Features:
- Temperature Compensated
- Operating Temperature:
- -40°C ~ 150°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SC-59-3
AH3323Q-W-7 FAQ
1.How can I place an order for AH3323Q-W-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for AH3323Q-W-7 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 AH3323Q-W-7 reliable?
The price and inventory of AH3323Q-W-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AH3323Q-W-7 is usually 5 days.
3.What payment methods are accepted for AH3323Q-W-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AH3323Q-W-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AH3323Q-W-7?
AH3323Q-W-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AH3323Q-W-7 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 AH3323Q-W-7?
For technical support, including AH3323Q-W-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AH3323Q-W-7 requirements.
6.How does Aetrix verify that AH3323Q-W-7 is sourced from the original manufacturer or authorized distributors?
All AH3323Q-W-7 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 AH3323Q-W-7 meets industry standards.
7.What is the process for return or replacement of AH3323Q-W-7?
All AH3323Q-W-7 units undergo pre-shipment inspection (PSI). If there is an issue with AH3323Q-W-7, 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 AH3323Q-W-7 part is unused and in its original packaging.
Return procedure for AH3323Q-W-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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