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Diodes Incorporated AH3326Q-SA-7
- Part No.:
- AH3326Q-SA-7
- Manufacturer:
- Diodes Incorporated
- Category:
- Switches (Solid State)
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
AH3326Q-SA-7.pdf
- Description:
- HALL UNIPOLAR SWITCH SSOT23 T&R
- Quantity:
- Payment:
- Shipping:
Inventory:4,725
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Product details
Overview
AH3326Q-SA-7 from Diodes Incorporated is an AEC-Q100 Grade 0 qualified automotive Hall-effect unipolar switch IC in SOT23 (Type S) package, designed for position and proximity sensing in harsh environments. It operates from 3.0V to 28V supply, features 100G typical operate point (BOP), 85G typical release point (BRP), 15G hysteresis, and delivers open-drain output with 60mA current limit-used in seatbelt buckle detection and gear position sensing.
For engineers reviewing the AH3326Q-SA-7 datasheet, AH3326Q-SA-7 pinout, AH3326Q-SA-7 application, or AH3326Q-SA-7 equivalent, this device supports robust magnetic switching in automotive cabin systems where wide voltage range, high ESD immunity (8kV HBM), and -40°C to +150°C operation are mandatory.
Technical Context
The AH3326Q employs chopper-stabilized architecture with dynamic offset cancellation to minimize thermal drift of magnetic thresholds across temperature. Its internal bandgap regulator supplies temperature-compensated bias to analog blocks, ensuring stable BOP/BRP performance over -40°C to +150°C.
It integrates reverse-blocking diode, zener clamps on VDD and OUTPUT pins, and output overcurrent limiting. Magnetic polarity response depends on package type: for SOT23 (Type S), South pole must be applied to the part marking side to activate the open-drain output.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 3.0V to 28V - enables direct connection to automotive battery rails including load dump transients up to 40V (non-operational stress rating) |
| Operate Point (BOP) | 65G to 135G (typ. 100G) - defines minimum South-pole field strength required to pull output low in SOT23 (Type S) package |
| Release Point (BRP) | 50G to 120G (typ. 85G) - ensures clean magnetic hysteresis to prevent chatter during field decay |
| Output Type | Open-drain, 60mA continuous - requires external pull-up; supports direct interface to 3.3V/5V/12V logic or microcontroller GPIO |
| Startup Time | 10µs typical - guarantees valid output state within 10µs after VDD reaches 3V, critical for fast-response safety systems |
| ESD Robustness | HBM: 8kV, CDM: 1kV - exceeds AEC-Q100 Grade 0 requirements for assembly and in-vehicle handling |
| Operating Temperature | -40°C to +150°C - qualified for under-hood and cabin applications including HVAC actuators and door latches |
Pinout & Package
SOT23 (Type S) package: 3-pin surface-mount, 2.9mm × 2.4mm footprint, 1.0mm max height, lead-free and RoHS compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | VDD | Power supply input - accepts 3.0V–28V; includes reverse-blocking diode and zener clamp for protection |
| 2 | GND | Ground reference - common return for internal regulator, Hall sensor, and output stage |
| 3 | OUTPUT | Open-drain output - sinks up to 60mA when active (B > BOP); requires external pull-up resistor for logic-level signaling |
Key Features
| Feature | Design Value |
|---|---|
| Chopper-stabilized Hall sensor | Reduces thermal drift of BOP/BRP to ±10G over full temperature range, enabling reliable switching without recalibration |
| Integrated protection circuitry | Reverse-blocking diode + zener clamps on VDD and OUTPUT eliminate need for external TVS or reverse-polarity protection components |
| High-voltage tolerance | Withstands 40V load dump transients per ISO 7637-2 Pulse 5a, supporting direct battery connection in 12V/24V systems |
| Unipolar magnetic response | Activates only with South pole applied to marking side - simplifies mechanical design in space-constrained automotive assemblies |
| AEC-Q100 Grade 0 qualification | Validated for 150°C ambient operation and PPAP-capable manufacturing in IATF 16949 certified facilities |
Applications
| Seatbelt Buckle Detection | Steering Column Lock Sensing |
|---|---|
Use Scenario: Detect buckle insertion/removal in driver/passenger seats to enable airbag readiness and occupancy classification. IC Role / Device Role / Timing Role: Unipolar Hall switch provides contactless, wear-free status signal with hysteresis to reject vibration-induced false triggers. Use Value: Enables ASIL-B compatible sensing with 100G BOP sensitivity and guaranteed operation at 150°C near heated seat elements. |
Use Scenario: Confirm mechanical engagement of steering lock actuator during vehicle power-up and immobilizer handshake. IC Role / Device Role / Timing Role: Provides deterministic on/off signal synchronized to solenoid motion; startup time ≤10µs ensures immediate feedback post-power-on. Use Value: Eliminates mechanical switches subject to corrosion and wear, improving long-term reliability in security-critical systems. |
| Transmission Gear Position Sensing | Door/Trunk Closure Monitoring |
Use Scenario: Sense P/R/N/D gear selector lever position in automatic transmissions using magnet-actuated flag. IC Role / Device Role / Timing Role: Hall switch outputs logic-low when magnet aligns with sensor face; hysteresis prevents bounce during gear transition. Use Value: Supports fail-safe diagnostics via consistent BOP/BRP window (65G–135G/50G–120G) across temperature and lifetime. |
Use Scenario: Monitor latch engagement in doors, trunk, or hood to control interior lighting, alarm arming, and power window auto-reverse. IC Role / Device Role / Timing Role: Provides tamper-resistant, non-contact status signal immune to dirt, moisture, and mechanical fatigue. Use Value: Delivers 8kV HBM ESD immunity and 28V zener clamp on output-critical for exposed body electronics exposed to service environments. |
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 |
|---|---|---|---|
| AL3326Q-SA-7 | Same BOP/BRP specs (65–135G / 50–120G), but uses different process node; 5.5V max VDD vs. 28V | Restricted to low-voltage subsystems (e.g., infotainment sensors); not suitable for direct battery-sensing applications | Select AH3326Q-SA-7 for 12V/24V battery-rail interfacing; AL3326Q-SA-7 only where supply is regulated ≤5.5V |
| TLE4913-2SA | BOP = 5mT (50G) min, BRP = 3.5mT (35G) min; wider hysteresis (15G typ); no integrated reverse-blocking diode | Requires external reverse-polarity protection and higher-field magnets; validated for 150°C but lacks 40V load dump rating | AH3326Q-SA-7 offers superior system-level robustness in unregulated automotive domains with fewer external components |
Compared with AL3326Q-SA-7 and TLE4913-2SA, AH3326Q-SA-7 uniquely combines 28V operation, integrated reverse protection, and AEC-Q100 Grade 0 qualification-making it the only choice for direct battery-connected, high-reliability cabin sensing where voltage margin and component count matter.
Availability
AH3326Q-SA-7 is available at Aetrix Electronics and suitable for automotive seatbelt detection, steering lock verification, and transmission gear position sensing requiring stable component supply across extended temperature and voltage ranges.
Supply support for AH3326Q-SA-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 manufacturer of discrete semiconductors and ICs, specializing in high-reliability solutions for automotive, industrial, and computing markets.
The AH332XQ series belongs to Diodes' automotive Hall-effect sensor product line, engineered specifically for contactless position and proximity sensing in AEC-Q100-compliant systems with demanding voltage, temperature, and EMC requirements.
FAQ
What magnetic polarity activates the AH3326Q-SA-7 output?
The AH3326Q-SA-7 in SOT23 (Type S) package activates with a South pole applied to the part marking side. This is confirmed in the datasheet's magnetic characteristics table and pin diagram. Applying North pole or South pole to the opposite side will not trigger the output. Polarity behavior differs for SC59 packages, but SA-7 denotes SOT23 (Type S).
Does AH3326Q-SA-7 require an external capacitor on VDD?
Yes - a 10nF to 100nF ceramic decoupling capacitor (CIN) is required between VDD and GND per the Typical Applications Circuit. This stabilizes the internal bandgap regulator and improves RF noise immunity. Omitting CIN may cause erratic switching or increased susceptibility to conducted EMI in automotive environments.
Can AH3326Q-SA-7 drive a relay directly?
No - its 60mA continuous output current limit is insufficient for most automotive relays (typically requiring 100–300mA coil current). It must interface through a transistor driver or logic-level MOSFET. The open-drain output is intended for signaling, not power switching; exceeding 60mA risks permanent damage per Absolute Maximum Ratings.
Is AH3326Q-SA-7 pin-compatible with other AH332XQ variants?
Yes - all AH332XQ variants (e.g., AH3322Q-SA-7 to AH3329Q-SA-7) share identical SOT23 (Type S) pinout (VDD-GND-OUTPUT), same footprint, and identical electrical interface. Only magnetic sensitivity (BOP/BRP) and hysteresis differ; no layout or schematic changes are needed when substituting within the family.
AH3326Q-SA-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:
- 13.5mT Trip, 5mT 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:
- SOT-23-3
AH3326Q-SA-7 FAQ
1.How can I place an order for AH3326Q-SA-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for AH3326Q-SA-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 AH3326Q-SA-7 reliable?
The price and inventory of AH3326Q-SA-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AH3326Q-SA-7 is usually 5 days.
3.What payment methods are accepted for AH3326Q-SA-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AH3326Q-SA-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AH3326Q-SA-7?
AH3326Q-SA-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AH3326Q-SA-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 AH3326Q-SA-7?
For technical support, including AH3326Q-SA-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AH3326Q-SA-7 requirements.
6.How does Aetrix verify that AH3326Q-SA-7 is sourced from the original manufacturer or authorized distributors?
All AH3326Q-SA-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 AH3326Q-SA-7 meets industry standards.
7.What is the process for return or replacement of AH3326Q-SA-7?
All AH3326Q-SA-7 units undergo pre-shipment inspection (PSI). If there is an issue with AH3326Q-SA-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 AH3326Q-SA-7 part is unused and in its original packaging.
Return procedure for AH3326Q-SA-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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