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Diodes Incorporated AH3323Q-P-A
- Part No.:
- AH3323Q-P-A
- Manufacturer:
- Diodes Incorporated
- Category:
- Switches (Solid State)
- Package:
- 3-SIP, Formed Leads
- Datasheet:
-
AH3323Q-P-A.pdf
- Description:
- HALL UNIPOLAR SWITCH SIP-3 AMMO
- Quantity:
- Payment:
- Shipping:
Inventory:3,554
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Product details
Overview
AH3323Q-P-A from Diodes Incorporated is an AEC-Q100 Grade 0 qualified automotive Hall-effect unipolar switch IC designed for position and proximity sensing in harsh environments. It operates from 3.0V to 28V, features open-drain output with 60mA current limit, BOP/BRP of 38–72G/20–50G typical, and functions reliably from −40°C to +150°C - deployed in seatbelt buckles, gear position detection, and door/trunk closure systems.
For engineers reviewing the AH3323Q-P-A datasheet, AH3323Q-P-A pinout, AH3323Q-P-A application, or AH3323Q-P-A equivalent, this device delivers verified magnetic switching performance, load-dump robustness (40V), chopper-stabilized temperature stability, and SIP-3 (Ammo Pack) package compatibility for high-volume automotive assembly.
Technical Context
The AH3323Q-P-A implements a chopper-stabilized Hall sensor with dynamic offset cancellation, enabling minimal switch-point drift (<±10G over −40°C to +150°C) and superior immunity to mechanical stress and thermal gradients. Its internal bandgap regulator supplies temperature-compensated bias to analog circuitry, ensuring stable operation across full automotive voltage and temperature ranges.
It uses a single open-drain NMOS output stage with integrated overcurrent limiting (30–55mA) and zener clamping on both VDD and OUTPUT pins. Magnetic actuation requires South pole orientation relative to package marking side for SIP-3 (Ammo Pack), with hysteresis (BHY) of 12–28G to prevent chatter near threshold.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 3.0V to 28V - supports direct connection to automotive battery rail without external regulation |
| Operating Temperature | −40°C to +150°C - qualified for under-hood and cabin-critical automotive zones |
| BOP / BRP (Typ.) | 55G / 35G - enables reliable detection of small ferrous targets at air gaps up to 3.5mm |
| Output Type | Open-drain NMOS - allows flexible pull-up to any logic rail (e.g., 3.3V, 5V, 12V) and wired-OR interfacing |
| Load Dump Protection | 40V transient rating - withstands ISO 7637-2 Pulse 5a without external protection components |
| ESD Robustness | HBM 8kV, CDM 1kV - exceeds AEC-Q100 requirements for handling and assembly reliability |
| Power-On Time | 10µs typical - ensures fast system response after ignition power-up |
Pinout & Package
Package: SIP-3 (Ammo Pack), 3-pin surface-mount package with spread leads, RoHS-compliant and halogen-free.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | VDD | Positive supply input - accepts 3.0V–28V; includes reverse-blocking diode and 28V zener clamp |
| 2 | GND | Ground reference - common return for internal regulator, sensor, and output stage |
| 3 | OUTPUT | Open-drain output - sinks up to 60mA; requires external pull-up; clamped to 32V max off-state |
Key Features
| Feature | Design Value |
|---|---|
| Chopper stabilization | Reduces thermal drift of BOP/BRP to <±0.1G/°C and eliminates mechanical stress-induced offset |
| Integrated protection | Reverse-blocking diode + VDD zener clamp (28V) + OUTPUT zener clamp (32V) + 60mA output current limit |
| Magnetic polarity alignment | South pole actuation on part-marking side - standardized for SIP-3 (Ammo Pack) mounting orientation |
| AEC-Q100 Grade 0 qualification | Validated for 150°C ambient operation and PPAP-capable manufacturing in IATF 16949 facilities |
| RF noise immunity | Validated per ISO 11452-2/4 - maintains switching integrity in high-noise engine bay environments |
Applications
| Seatbelt Buckle Detection | Gear Position Sensing |
|---|---|
Use Scenario: Detect buckle insertion status in driver/passenger seats using a magnet embedded in the tongue and AH3323Q-P-A mounted on the latch housing. IC Role / Device Role / Timing Role: Unipolar Hall switch providing digital occupancy signal to body control module (BCM) with <10µs response latency. Use Value: Eliminates mechanical microswitch wear; operates reliably through 100,000+ cycles and −40°C cold starts. |
Use Scenario: Monitor P/R/N/D gear selector position in automatic transmission assemblies via rotating cam-magnet assembly. IC Role / Device Role / Timing Role: Proximity-sensing switch delivering discrete gear-state logic to transmission control unit (TCU). Use Value: Immune to oil contamination and vibration; meets ASIL-B functional safety requirements when used in dual-redundant configuration. |
| Door/Trunk Closure Monitoring | HVAC Actuator Position Feedback |
Use Scenario: Confirm full latching of vehicle doors or trunk lid using magnet-on-latch and sensor-on-frame placement. IC Role / Device Role / Timing Role: Fail-safe proximity detector feeding door-open warning signal to instrument cluster and anti-theft system. Use Value: Operates continuously at battery voltage (12V nominal); survives load dump transients without latch-up or damage. |
Use Scenario: Sense flap position in HVAC blend/air mode actuators using rotary magnet and fixed AH3323Q-P-A mounting. IC Role / Device Role / Timing Role: Binary end-stop switch indicating fully open/closed state of damper vanes. Use Value: Replaces potentiometers in cost-sensitive modules; avoids contact wear and wiper noise in closed-loop feedback paths. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar unipolar Hall switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Allegro A1120EUA-T | Wider BOP range (20–120G), no load-dump rating, SOIC-3 package only | Lacks AEC-Q100 Grade 0 qualification and 40V transient protection | Prefer AH3323Q-P-A for under-hood use; A1120 suits interior-only, lower-cost modules |
| Melexis US1881EUA-ABA-001-SP | Higher sensitivity (BOP = 25G typ), but only rated to +125°C ambient and lacks zener clamps on VDD/OUTPUT | Not qualified for engine compartment deployment; requires external TVS for load dump | Choose AH3323Q-P-A when operating above 125°C or where board-level protection must be minimized |
Compared with A1120EUA-T and US1881EUA-ABA-001-SP, the AH3323Q-P-A provides guaranteed 150°C operation, integrated 40V load-dump tolerance, and SIP-3 (Ammo Pack) packaging optimized for automated SMT placement in high-volume automotive harness modules.
Availability
AH3323Q-P-A is available at Aetrix Electronics and suitable for seatbelt sensing, gear position monitoring, and door/trunk closure detection requiring stable component supply across extended automotive production lifecycles.
Supply support for AH3323Q-P-A 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 solutions for automotive, industrial, and consumer markets, with IATF 16949-certified wafer fabs and assembly sites.
The AH332XQ series belongs to Diodes' AEC-Q100-qualified Hall-effect sensor product line, engineered specifically for contactless position and proximity sensing in automotive powertrain, chassis, and body electronics.
FAQ
What is the magnetic polarity requirement for AH3323Q-P-A activation?
The AH3323Q-P-A in SIP-3 (Ammo Pack) package requires a South pole applied to the part-marking side for activation. This is confirmed in the datasheet's magnetic characteristics table and pin diagram. The device switches ON (output pulled low) when perpendicular magnetic flux density exceeds 38–72G (BOP), and releases below 20–50G (BRP). Polarity orientation is package-specific and differs for SC59 variants.
Does AH3323Q-P-A require an external capacitor on VDD?
Yes - a 10nF to 100nF ceramic decoupling capacitor (CIN) is required between VDD and GND, as specified in the Typical Applications Circuit. This stabilizes the internal bandgap regulator, improves noise immunity against RF interference, and prevents false triggering during supply transients. Placement within 2mm of the VDD pin is recommended for optimal performance.
Can AH3323Q-P-A drive an LED directly?
No - the AH3323Q-P-A has an open-drain output rated for 60mA continuous sink current, but its VOL is 0.4V max at 20mA. Driving an LED typically requires forward voltage >1.8V and precise current control; direct connection risks insufficient voltage headroom and unregulated current. Use an external NPN transistor or dedicated LED driver stage for reliable illumination control.
Is AH3323Q-P-A pin-compatible with other AH332XQ variants?
Yes - all AH332XQ variants (AH3322Q through AH3329Q, AH3320Q, AH3321Q) share identical SIP-3 (Ammo Pack), SIP-3 (Bulk Pack), SOT23 (Type S), and SC59 packages and pinouts (VDD-GND-OUTPUT). Only magnetic thresholds differ; electrical interface, protection features, timing, and thermal specs are identical across the family, enabling drop-in sensitivity upgrades.
AH3323Q-P-A Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- 3-SIP, Formed Leads
- Packaging:
- Tape & Box (TB)
- 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:
- Through Hole
- Supplier Device Package:
- 3-SIP
AH3323Q-P-A FAQ
1.How can I place an order for AH3323Q-P-A through Aetrix?
Please submit a Request for Quotation (RFQ) for AH3323Q-P-A 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-P-A reliable?
The price and inventory of AH3323Q-P-A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AH3323Q-P-A is usually 5 days.
3.What payment methods are accepted for AH3323Q-P-A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AH3323Q-P-A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AH3323Q-P-A?
AH3323Q-P-A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AH3323Q-P-A 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-P-A?
For technical support, including AH3323Q-P-A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AH3323Q-P-A requirements.
6.How does Aetrix verify that AH3323Q-P-A is sourced from the original manufacturer or authorized distributors?
All AH3323Q-P-A 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-P-A meets industry standards.
7.What is the process for return or replacement of AH3323Q-P-A?
All AH3323Q-P-A units undergo pre-shipment inspection (PSI). If there is an issue with AH3323Q-P-A, 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-P-A part is unused and in its original packaging.
Return procedure for AH3323Q-P-A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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