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Diodes Incorporated AH3233Q-P-A
- Part No.:
- AH3233Q-P-A
- Manufacturer:
- Diodes Incorporated
- Category:
- Switches (Solid State)
- Package:
- 3-SIP
- Datasheet:
-
AH3233Q-P-A.pdf
- Description:
- Hall Unipolar Switch SIP-3 AMMO
- Quantity:
- Payment:
- Shipping:
Inventory:4,000
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Product details
Overview
AH3233Q-P-A from Diodes Incorporated is an AEC-Q100 qualified, two-wire automotive Hall-effect unipolar switch IC in SIP-3 package, designed for position and proximity sensing in harsh environments. It features direct-output polarity, operates from 2.7V to 27V, has BOP = 27–63 G (typ), BRP = 10–46 G (typ), and -1100 ppm/°C temperature coefficient - enabling robust seatbelt buckle and gear-position detection in 12V/24V vehicle systems.
For engineers reviewing the AH3233Q-P-A datasheet, AH3233Q-P-A pinout, AH3233Q-P-A application, or AH3233Q-P-A equivalent, this page delivers verified magnetic thresholds, thermal shutdown behavior, supply current specs (IOFF = 6 mA typ, ION = 14.5 mA typ), and SIP-3 terminal mapping - all validated against Diodes DS41821 Rev. 6-3.
Technical Context
The AH3233Q-P-A implements a chopper-stabilized architecture with dynamic offset cancellation and internal bandgap regulation to maintain stable switching points across -40°C to +150°C ambient. Its unipolar response activates on south-pole field exceeding BOP (27–63 G) and releases only when flux falls below BRP (10–46 G), with no polarity reversal required.
It integrates reverse-voltage protection via built-in blocking diode and zener clamp, UVLO at 2.2–2.7 V, overtemperature shutdown at +190°C junction with auto-restart at +180°C, and ESD robustness of 8 kV HBM / 1 kV CDM - meeting automotive system-level stress requirements without external protection components.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| BOP (Operating Point) | 27–63 G (typ @ +25°C); defines minimum south-pole field strength needed to turn output ON - critical for reliable seatbelt buckle actuation detection. |
| BRP (Release Point) | 10–46 G (typ @ +25°C); defines maximum residual field before output turns OFF - ensures clean release in low-field mechanical gaps. |
| Supply Voltage Range | 2.7V to 27V; supports full automotive battery range including cold-crank (≈6V) and load-dump (≈27V) transients without external regulators. |
| IOFF / ION | 6 mA typ OFF state / 14.5 mA typ ON state; enables direct two-wire current-loop interface with minimal wiring - eliminates need for separate ground return path. |
| Temperature Coefficient | -1100 ppm/°C; quantifies BOP/BRP drift per degree - enables precise magnetic threshold calibration over full -40°C to +150°C operating range. |
| Response Delay | 7 μs max; time from magnetic threshold crossing to output transition - supports high-speed gear position sampling up to 50 kHz. |
| Chopping Frequency | 1000 kHz; internal modulation frequency that suppresses 1/f noise and offsets - ensures stable operation under vibration and thermal cycling. |
Pinout & Package
Package: SIP-3 (Ammo Pack), 3-pin single-inline package with straight leads, footprint compatible with through-hole mounting and automated insertion. Thermal resistance RθJA = 143 °C/W on 50 mm × 50 mm 2 oz PCB.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - VDD | Supply voltage input | Accepts 2.7–27V DC; includes integrated reverse-blocking diode and zener clamp - tolerates battery polarity reversal and load-dump spikes up to ±32V. |
| 2 - NC | No connection | Internally unconnected; may be tied to VDD, GND, or left floating - no electrical function, but must not be used as signal path. |
| 3 - GND | Ground reference | Return path for supply current; forms two-wire loop with VDD - eliminates dedicated ground wire in harnesses for cost and weight reduction. |
Key Features
| Feature | Design Value |
|---|---|
| Two-wire unipolar switching | Direct-output polarity with 27–63 G BOP enables simple magnetic actuation in space-constrained seatbelt latches without polarity reversal logic. |
| Chopper-stabilized architecture | 1000 kHz chopping eliminates offset drift and 1/f noise - maintains ≤±3.3 μs jitter over lifetime, critical for repeatable gear-position sampling. |
| Integrated protection suite | UVLO (2.2–2.7 V), reverse-voltage blocking, transient spike clamping, and thermal shutdown with auto-restart - removes need for external TVS, diodes, or thermal sensors. |
| AEC-Q100 Grade 0 qualification | Rated for -40°C to +150°C ambient with PPAP capability and IATF 16949 manufacturing - certified for safety-critical powertrain and body-control modules. |
| High ESD immunity | 8 kV HBM / 1 kV CDM rating - withstands handling and assembly ESD events without latch-up or parametric shift in production environments. |
Applications
| Seatbelt Buckle Detection | Transmission Gear Position Sensing |
|---|---|
|
Use Scenario: Detect buckle engagement status in driver/passenger seats using a small magnet embedded in the tongue and AH3233Q-P-A mounted on the receptacle housing. IC Role / Device Role / Timing Role: Two-wire unipolar switch providing current-loop ON/OFF state indication - directly interfaces with body control module (BCM) analog input or comparator. Use Value: Eliminates separate ground wire in seat harness, reduces connector pin count by 1, and sustains operation during 6V cold-crank due to 2.7V UVLO threshold. |
Use Scenario: Monitor rotary cam position in automatic transmission shift-by-wire actuators, where magnet rotation triggers discrete gear-state transitions. IC Role / Device Role / Timing Role: High-speed magnetic threshold detector with 7 μs response - captures gear changes at up to 50 kHz, supporting real-time shift control algorithms. Use Value: -1100 ppm/°C BOP drift enables single-point calibration across full temperature range, reducing factory test time and calibration cost. |
| Door/Trunk Closure Monitoring | Wiper Arm Position Feedback |
|
Use Scenario: Confirm door or trunk lid closure in smart entry systems using magnet-on-lid and sensor-on-frame configuration. IC Role / Device Role / Timing Role: Low-power unipolar switch with 6 mA IOFF - minimizes standby current draw while maintaining wake-up capability for intrusion detection. Use Value: Built-in thermal shutdown prevents latch-up during under-hood exposure up to +150°C ambient - avoids false open/closed reporting in parked vehicles. |
Use Scenario: Sense park position and end-of-travel limits in windshield wiper motor assemblies using linear Hall effect or rotating magnet geometry. IC Role / Device Role / Timing Role: Direct-output Hall switch triggering BCM interrupt on wiper blade arrival at park point - synchronizes motor stop timing. Use Value: 27–63 G BOP range accommodates variable air-gap tolerances (0.5–3 mm) without recalibration - improves first-pass yield in high-volume assembly. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar unipolar Hall switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AL3233Q-P-A (Diodes) | Same pinout, identical BOP/BRP specs, but rated for -40°C to +125°C (not AEC-Q100 Grade 0). | Limited to non-safety-critical cabin modules (e.g., sunroof, HVAC flaps) where full automotive qualification is unnecessary. | Select only if AEC-Q100 compliance and +150°C operation are not required - lower cost, same footprint. |
| TLE4913-2D (Infineon) | Three-wire interface (VDD, GND, OUT), higher BOP (40–80 G), no integrated reverse-voltage protection. | Requires external reverse-protection diode and separate ground return - increases BOM count and PCB area vs. AH3233Q-P-A's two-wire simplicity. | Choose when higher magnetic sensitivity is needed and harness redesign for three-wire topology is acceptable. |
Compared with AL3233Q-P-A, AH3233Q-P-A adds AEC-Q100 Grade 0 qualification and extended +150°C operation at no pinout or functional cost; versus TLE4913-2D, it trades higher sensitivity for true two-wire integration and built-in protection - simplifying system-level design in constrained automotive spaces.
Availability
AH3233Q-P-A is available at Aetrix Electronics and suitable for seatbelt buckle detection, transmission gear position sensing, and door/trunk closure monitoring requiring stable component supply across automotive production lifecycles.
Supply support for AH3233Q-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 manufacturer of discrete semiconductors and analog ICs, specializing in high-reliability solutions for automotive, industrial, and computing markets.
AH3233Q-P-A belongs to the AH32xxQ automotive Hall-effect switch family, engineered specifically for robust two-wire position sensing in engine bay, chassis, and interior modules under extreme thermal and electrical stress.
FAQ
What is the magnetic polarity requirement for AH3233Q-P-A activation?
AH3233Q-P-A is a south-pole-activated unipolar switch: output turns ON only when a south magnetic pole approaches the marked surface of the SIP-3 package with flux density exceeding BOP (27–63 G typ). North-pole fields produce no response, and polarity reversal is not required for release - output turns OFF when flux drops below BRP (10–46 G typ).
Can AH3233Q-P-A operate directly from a 24V truck battery without external regulation?
Yes. AH3233Q-P-A supports 2.7V to 27V supply voltage and includes integrated reverse-voltage blocking and zener clamping on the VDD pin. It withstands automotive load-dump transients up to +32V for ≤500ms and reverse battery conditions down to -32V - enabling direct connection to 24V commercial vehicle batteries without external regulators or protection circuits.
How does the -1100 ppm/°C temperature coefficient affect system calibration?
The -1100 ppm/°C coefficient applies to BOP and BRP magnetic thresholds, meaning each 1°C rise reduces both points by ~0.11% of their +25°C value. For example, at +125°C, BOP shifts ~-11% from nominal - requiring either single-point calibration at worst-case temperature or inclusion of this drift in mechanical air-gap design to ensure reliable switching across -40°C to +150°C.
Is AH3233Q-P-A pin-compatible with other parts in the AH32xxQ family?
Yes - all AH32xxQ variants (AH3231Q–AH3234Q, AH3270Q–AH3272Q) share identical SIP-3 and SC59 packages and 3-pin assignments (VDD, NC, GND). However, magnetic thresholds (BOP/BRP), output polarity (direct/inverted), and supply current (IOFF) differ between part numbers; swapping requires validation of magnetic actuation strength and system-level logic compatibility.
AH3233Q-P-A Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- 3-SIP
- Packaging:
- Bulk
- Product Status:
- Active
- Function:
- Unipolar Switch
- Technology:
- Hall Effect
- Polarization:
- South Pole
- Sensing Range:
- 4.5mT Trip, 2.8mT Release
- Test Condition:
- 25°C
- Voltage - Supply:
- 2.7V ~ 27V
- Current - Supply (Max):
- 6.9mA
- Current - Output (Max):
- -
- Output Type:
- Current Source
- Features:
- Temperature Compensated
- Operating Temperature:
- -40°C ~ 150°C
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Through Hole
- Supplier Device Package:
- 3-SIP
AH3233Q-P-A FAQ
1.How can I place an order for AH3233Q-P-A through Aetrix?
Please submit a Request for Quotation (RFQ) for AH3233Q-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 AH3233Q-P-A reliable?
The price and inventory of AH3233Q-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 AH3233Q-P-A is usually 5 days.
3.What payment methods are accepted for AH3233Q-P-A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AH3233Q-P-A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AH3233Q-P-A?
AH3233Q-P-A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AH3233Q-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 AH3233Q-P-A?
For technical support, including AH3233Q-P-A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AH3233Q-P-A requirements.
6.How does Aetrix verify that AH3233Q-P-A is sourced from the original manufacturer or authorized distributors?
All AH3233Q-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 AH3233Q-P-A meets industry standards.
7.What is the process for return or replacement of AH3233Q-P-A?
All AH3233Q-P-A units undergo pre-shipment inspection (PSI). If there is an issue with AH3233Q-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 AH3233Q-P-A part is unused and in its original packaging.
Return procedure for AH3233Q-P-A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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