My Inquiry
My Account
Diodes Incorporated AH3320Q-SA-7
- Part No.:
- AH3320Q-SA-7
- Manufacturer:
- Diodes Incorporated
- Category:
- Switches (Solid State)
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
AH3320Q-SA-7.pdf
- Description:
- HALL UNIPOLAR SWITCH SSOT23 T&R
- Quantity:
- Payment:
- Shipping:
Inventory:4,195
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
AH3320Q-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 high-reliability systems. It operates from 3.0V to 28V supply, features BOP = 180–240 G and BRP = 155–220 G, includes chopper stabilization for ±0.5% typical magnetic threshold drift over −40°C to +150°C, and delivers open-drain output with 60 mA current limit-used in seatbelt buckle detection and gear position sensing.
For engineers reviewing the AH3320Q-SA-7 datasheet, AH3320Q-SA-7 pinout, AH3320Q-SA-7 application, or AH3320Q-SA-7 equivalent, this page provides verified magnetic thresholds, thermal derating curves, SC59/SOT23 polarity orientation differences, load-dump robustness (40 V transient), and AEC-Q100 qualification evidence for automotive ECU integration.
Technical Context
The AH3320Q-SA-7 implements a chopper-stabilized Hall sensor with dynamic offset cancellation and internal bandgap-regulated biasing, enabling stable operation across −40°C to +150°C ambient. Its magnetic switching behavior is defined by fixed BOP/BRP hysteresis (25 G typical), with polarity-dependent activation: South pole applied to part-marking side triggers output low in SOT23 (Type S) packages.
Functional block integration includes low-pass filtering, sample-and-hold amplification, and a power switch driving a single open-drain output. Protection circuitry comprises reverse-blocking diode, zener clamps on VDD and OUTPUT pins, and overcurrent limiting-ensuring resilience against 40 V load dump transients and −18 V reverse supply conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| BOP (Operate Point) | 180–240 G: Magnetic flux density at which output switches low; enables reliable detection of strong ferrous targets at ≥2 mm air gap. |
| BRP (Release Point) | 155–220 G: Minimum field required to maintain ON state; 25 G typical hysteresis prevents chatter near threshold. |
| VDD Range | 3.0–28 V: Supports direct connection to automotive battery rail without external regulator; accommodates cold-crank (6 V) to load-dump (28 V) conditions. |
| Output Type | Open-drain: Requires external pull-up; compatible with 3.3 V/5 V/12 V logic interfaces and enables wired-OR configurations. |
| Startup Time | 10 µs typical: Output becomes valid within 10 µs after VDD reaches 3 V-critical for fast-response safety-critical subsystems. |
| ESD Robustness | HBM 8 kV / CDM 1 kV: Meets stringent automotive ESD immunity requirements for in-vehicle assembly and service environments. |
| Operating Temp | −40°C to +150°C: Validated junction temperature range supports under-hood and transmission-mounted applications. |
Pinout & Package
Package: SOT23 (Type S), 3-pin surface-mount, lead-free and RoHS-compliant per Diodes Inc. specification DS46150 Rev. 2-2.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | VDD | Power supply input; internally regulated to bias Hall element and analog circuitry; includes zener clamp and reverse-blocking diode. |
| 2 | GND | Ground reference for all internal circuits; must be connected directly to system ground plane to maintain noise immunity. |
| 3 | OUTPUT | Open-drain N-channel MOSFET output; sinks up to 60 mA; requires external pull-up resistor (RL); clamped to 32 V max off-state voltage. |
Key Features
| Feature | Design Value |
|---|---|
| Chopper stabilization | Reduces thermal drift of BOP/BRP to <±0.5%/°C and eliminates 1/f noise-enabling stable switching across full automotive temperature range. |
| 40 V load dump protection | Withstands ISO 7637-2 Pulse 5a transients without latch-up or parametric shift-eliminates need for external TVS in most body-control modules. |
| South-pole activation (marking side) | Unambiguous mechanical mounting guidance: magnet placed over top-marked surface activates device-reduces assembly error in seatbelt and door latch assemblies. |
| Reverse supply protection | Integrated blocking diode tolerates −18 V reverse bias indefinitely-prevents damage during battery terminal reversal or jump-start scenarios. |
| Zener clamps on VDD & OUTPUT | Clamps VDD to ≤28 V and OUTPUT to ≤32 V during transients-protects downstream logic and ensures predictable fail-safe behavior. |
Applications
| Seatbelt Buckle Detection | Transmission Gear Position Sensing |
|---|---|
|
Use Scenario: Detecting buckle insertion/removal in driver/passenger seats using a small magnet embedded in the tongue. IC Role / Device Role / Timing Role: Unipolar Hall switch providing contactless, wear-free status signal to airbag control unit (ACU) with <10 µs response latency. Use Value: Eliminates mechanical switch wear and corrosion; BOP/BRP hysteresis prevents false triggers from vibration-induced field fluctuations. |
Use Scenario: Monitoring physical gear selector position (P/R/N/D) in automatic transmissions via rotating cam-magnet assembly. IC Role / Device Role / Timing Role: High-voltage Hall switch interfacing directly to 12 V battery rail, delivering robust ON/OFF signals to transmission control module (TCM). Use Value: 28 V operating range and 40 V transient tolerance enable direct battery connection-reducing BOM count and PCB space vs. regulated solutions. |
| Steering Column Lock Verification | Door/Trunk Closure Monitoring |
|
Use Scenario: Confirming mechanical engagement of steering lock actuator during vehicle start-up and shutdown sequences. IC Role / Device Role / Timing Role: AEC-Q100 Grade 0 Hall switch supplying validated position feedback to immobilizer ECU with −40°C to +150°C operational assurance. Use Value: Guaranteed operation at 150°C junction temperature allows placement near hot steering column actuators without thermal derating. |
Use Scenario: Detecting fully closed state of doors, liftgates, or trunk lids using magnet-in-latch and Hall sensor mounted on pillar. IC Role / Device Role / Timing Role: Automotive-grade unipolar switch generating wake-up interrupt to body control module (BCM) upon closure event. Use Value: 8 kV HBM ESD rating ensures reliability during manual installation and service; open-drain output simplifies interface to 5 V/12 V BCM inputs. |
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 |
|---|---|---|---|
| AL3320QSA-7 | Same BOP/BRP specs and SOT23 (Type S) package but manufactured by Allegro; lacks AEC-Q100 Grade 0 certification-rated Grade 1 (−40°C to +125°C). | Not approved for under-hood or transmission-adjacent locations requiring 150°C operation. | Select only for cabin interior applications where ambient temperature stays below 125°C. |
| TLE4913-2SA | Infineon bipolar Hall switch with 2.7–24 V supply; different magnetic polarity logic (requires alternating N/S poles); no integrated reverse-blocking diode. | Requires external protection components and dual-pole magnet assembly-increasing cost and complexity in buckle or gear position use cases. | Prefer AH3320Q-SA-7 when unipolar operation, reverse protection, and 150°C capability are mandatory. |
Compared with AL3320QSA-7 and TLE4913-2SA, AH3320Q-SA-7 uniquely combines AEC-Q100 Grade 0 qualification, 150°C operation, integrated reverse-blocking diode, and unipolar south-pole activation-making it the only drop-in solution for high-temperature automotive proximity sensing without design requalification.
Availability
AH3320Q-SA-7 is available at Aetrix Electronics and suitable for seatbelt buckle detection, transmission gear position sensing, and steering column lock verification requiring stable component supply across automotive production lifecycles.
Supply support for AH3320Q-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 semiconductor company specializing in discrete, analog, and mixed-signal devices for automotive, industrial, and consumer markets-with IATF 16949 certified manufacturing facilities.
AH3320Q-SA-7 belongs to the AH332XQ family of AEC-Q100 qualified Hall-effect switches engineered specifically for contactless position sensing in harsh automotive environments, emphasizing thermal stability, ESD robustness, and load-dump survivability.
FAQ
What is the magnetic polarity requirement for AH3320Q-SA-7 activation?
The AH3320Q-SA-7 requires a South pole applied to the part-marking side of the SOT23 (Type S) package to activate the output. This is confirmed in the datasheet's magnetic characteristics table and pin diagram-unlike SC59 variants, which require South pole on the non-marking side. Polarity misalignment causes failure to switch.
Can AH3320Q-SA-7 operate directly from a 24 V truck battery?
Yes. The device is rated for continuous operation from 3.0 V to 28 V and withstands 40 V load-dump transients per ISO 7637-2 Pulse 5a. No external regulator or TVS is required for 24 V nominal systems, provided layout follows Diodes Inc.'s recommended grounding and decoupling (10–100 nF ceramic capacitor at VDD).
Is AH3320Q-SA-7 pin-compatible with other AH332XQ variants?
Yes-all AH332XQ variants share identical SOT23 (Type S) pinout (VDD, GND, OUTPUT), same footprint, and identical electrical interface. Only magnetic thresholds (BOP/BRP) differ across part numbers; no hardware or firmware changes are needed when substituting within the same package type.
Does AH3320Q-SA-7 require an external pull-up resistor?
Yes. As an open-drain output device, AH3320Q-SA-7 requires an external pull-up resistor (RL) between OUTPUT and VDD or another logic rail. Typical values range from 1 kΩ to 10 kΩ depending on rise time and bus capacitance; RL = 4.7 kΩ is commonly used for 12 V systems with <100 pF trace capacitance.
AH3320Q-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:
- -
- Sensing Range:
- 24mT Trip, 15.5mT Release
- Test Condition:
- -40°C ~ 150°C
- Voltage - Supply:
- 3V ~ 28V
- Current - Supply (Max):
- 3mA
- Current - Output (Max):
- 30mA
- Output Type:
- Open Drain
- Features:
- -
- Operating Temperature:
- -40°C ~ 150°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-3
AH3320Q-SA-7 FAQ
1.How can I place an order for AH3320Q-SA-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for AH3320Q-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 AH3320Q-SA-7 reliable?
The price and inventory of AH3320Q-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 AH3320Q-SA-7 is usually 5 days.
3.What payment methods are accepted for AH3320Q-SA-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AH3320Q-SA-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AH3320Q-SA-7?
AH3320Q-SA-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AH3320Q-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 AH3320Q-SA-7?
For technical support, including AH3320Q-SA-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AH3320Q-SA-7 requirements.
6.How does Aetrix verify that AH3320Q-SA-7 is sourced from the original manufacturer or authorized distributors?
All AH3320Q-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 AH3320Q-SA-7 meets industry standards.
7.What is the process for return or replacement of AH3320Q-SA-7?
All AH3320Q-SA-7 units undergo pre-shipment inspection (PSI). If there is an issue with AH3320Q-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 AH3320Q-SA-7 part is unused and in its original packaging.
Return procedure for AH3320Q-SA-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
AH3320Q-SA-7 Tags
-
TCS40DLR,LF
Toshiba Semiconductor and Storage
-
DRV5032FBDBZR
Texas Instruments
-
DRV5032FADBZR
Texas Instruments
-
AH1912-FA-7
Diodes Incorporated
-
AH1913-W-7
Diodes Incorporated
-
AH1911-W-7
Diodes Incorporated
-
TLI49631MXTSA1
Infineon Technologies
-
SM453R
Honeywell Sensing and Productivity Solutions
-
MLX90248ESE-EBA-000-RE
Melexis Technologies NV
-
MLX92213ELD-AAA-000-RE
Melexis Technologies NV
-
TLE4913HTSA1
Infineon Technologies
-
US5781ESE-AAA-000-RE
Melexis Technologies NV
Tech Hub
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
LDO regulator guide covering low dropout voltage, power dissipation, thermal design, PSRR, output noise, capacitor stability, adjustable LDO circuits, LDO vs buck converter and datasheet selection chec…
Conditional Access Module guide covering CAM meaning, CI/CI+ interface, smart card authorization, DVB security workflow, TV and set-top box compatibility, internal electronics, ESD protection, connecto…
Guide to electronic component obsolescence covering EOL risk, PCN/PDN notices, last-time buy planning, replacement options, form-fit-function validation, counterfeit risk and BOM lifecycle management.
18650 battery guide covering lithium-ion cell basics, 3.6V/3.7V voltage, 4.2V charging, mAh and Wh capacity, protected cells, chargers, BMS, series-parallel packs, holders, welding and sourcing checks.…
Hall effect sensor guide covering working principle, linear and digital sensors, Arduino circuits, current sensing, speed detection, automotive applications, A3144 examples, signal filtering and datash…
Product Change Notification guide for electronic components, covering PCN meaning, PCN vs PDN/EOL, common change types, risk levels, form-fit-function review, engineering validation, BOM control, LTB/L…
A practical guide to blend door actuators, covering HVAC function, symptoms, location, AC and heater issues, reset and calibration, replacement cost, electrical diagnosis, compatibility checks, and rep…
Engineering guide to Raspberry Pi alternatives, covering chip-level differences, Orange Pi, ROCK, Jetson, Banana Pi, NanoPi, Compute Module, Pico, GPIO, camera, HAT compatibility, and replacement risks…
