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Diodes Incorporated AH3716Q-SA-7
- Part No.:
- AH3716Q-SA-7
- Manufacturer:
- Diodes Incorporated
- Category:
- Switches (Solid State)
- Package:
- -
- Datasheet:
-
AH3716Q-SA-7.pdf
- Description:
- HALL LATCH SWITCH SSOT23 T&R 3K
- Quantity:
- Payment:
- Shipping:
Inventory:2,999
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Product details
Overview
AH3716Q-SA-7 from Diodes Incorporated is an AEC-Q100 Grade 0 qualified automotive Hall-effect latch IC in SOT23 (Type S) package, designed for brushless DC motor commutation and angular position sensing. It operates from 3.0V to 27V, features ±80G to ±140G magnetic operate/release points (BOP/BRP), 13µs startup time, and open-drain output with 60mA current limit - deployed in engine camshaft/crankshaft position detection systems.
For engineers reviewing the AH3716Q-SA-7 datasheet, AH3716Q-SA-7 pinout, AH3716Q-SA-7 application, or AH3716Q-SA-7 equivalent, key selection criteria include bipolar latching polarity alignment (South pole activation on part-marking side), 40V load dump tolerance, chopper-stabilized temperature stability across −40°C to +150°C, and compatibility with 1kΩ pull-up networks in high-noise engine bay environments.
Technical Context
The AH3716Q-SA-7 implements a chopper-stabilized architecture with dynamic offset cancellation to suppress thermal drift and mechanical stress effects on magnetic thresholds. Its internal bandgap regulator supplies temperature-compensated bias to analog circuitry, ensuring stable BOP/BRP hysteresis of 160G–280G over full automotive temperature range.
It integrates reverse-blocking diode and Zener clamp on VDD for robustness against −18V reverse battery and 40V load dump transients. The single open-drain output switches low when perpendicular magnetic flux exceeds +110G (typical BOP) and remains latched until flux reverses below −110G (typical BRP), with polarity defined relative to part marking side per SOT23 (Type S) orientation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 3.0V to 27V - supports direct connection to automotive battery rail with transient immunity up to 40V. |
| BOP / BRP (Typical) | +110G / −110G - enables reliable switching in high-air-gap or low-field applications such as cam phasing sensors. |
| Output Type | Open-drain with 60mA sink capability - interfaces directly with 3.3V/5V/12V microcontroller inputs using external pull-up. |
| Startup Time | 13µs typical - ensures fast system readiness after ignition power-on, critical for real-time RPM measurement. |
| Operating Temperature | −40°C to +150°C - validated for under-hood placement near engines and transmissions. |
| Hysteresis (BHY) | 220G typical - prevents chatter in vibrating environments like transmission speed sensors. |
| ESD Rating | HBM: 8kV, CDM: 1kV - meets stringent automotive ESD requirements for assembly and field operation. |
Pinout & Package
Package: SOT23 (Type S), 3-pin surface-mount, lead-free and RoHS-compliant. Pin 1 = VDD (supply input), Pin 2 = GND (ground reference), Pin 3 = OUTPUT (open-drain output).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | VDD | Power supply input with integrated reverse-blocking diode and 36V Zener clamp - withstands reverse battery and load dump without external protection. |
| 2 | GND | Ground reference for internal regulator and output stage - requires low-impedance PCB return path to maintain noise immunity. |
| 3 | OUTPUT | Open-drain output with 30–60mA current limit - sinks current when activated; requires external pull-up resistor (typically 1kΩ–10kΩ) for logic-level interface. |
Key Features
| Feature | Design Value |
|---|---|
| Bipolar Latch Operation | South pole activates output (low), North pole releases - eliminates need for external polarity inversion in cam/crank sensor mounting. |
| Chopper-Stabilized Architecture | Reduces switch-point drift to <±0.5G/°C - maintains accuracy across engine thermal cycles without calibration. |
| 40V Load Dump Protection | Withstands ISO 7637-2 Pulse 5a transients - removes requirement for external TVS in cost-sensitive engine control modules. |
| RF Noise Immunity | Validated against 100MHz–1GHz radiated RF fields - ensures stable operation near ignition coils and infotainment antennas. |
| AEC-Q100 Grade 0 Qualification | Qualified for 150°C ambient operation - certified for placement in turbocharger housings and transmission valve bodies. |
Applications
| Engine Camshaft Position Sensing | Transmission Input Shaft Speed Monitoring |
|---|---|
Use Scenario: Detecting cam lobe passage in overhead cam engines with air gaps up to 2.5mm. IC Role / Device Role / Timing Role: Provides digital edge-triggered signal synchronized to valve timing for VVT control and misfire detection. Use Value: ±140G BOP/BRP sensitivity enables reliable switching at extended air gaps, reducing mechanical tolerance constraints on sensor bracket design. | Use Scenario: Measuring rotational speed of planetary gearset input shaft in 8-speed automatic transmissions. IC Role / Device Role / Timing Role: Generates clean zero-crossing pulses for closed-loop torque converter lockup and shift timing algorithms. Use Value: 13µs startup time ensures immediate RPM reporting after transmission wake-up, supporting fast gear engagement sequences. |
| Electric Power Steering Motor Commutation | Brake Caliper Position Feedback |
Use Scenario: Rotor position feedback for 3-phase BLDC assist motor in column-assist EPS systems. IC Role / Device Role / Timing Role: Supplies six-step commutation signals to gate driver ICs with precise 60° electrical phase alignment. Use Value: Chopper stabilization maintains <±3° electrical angle error over −40°C to +150°C, enabling consistent assist torque delivery. | Use Scenario: Monitoring piston extension in electromechanical brake calipers during auto-park and hold functions. IC Role / Device Role / Timing Role: Detects absolute linear position of brake actuator via magnet array on lead screw. Use Value: 280G hysteresis prevents false triggering from vibration-induced magnetic noise during braking events. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Hall-effect latch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AL3716QW-7 | Same die, SC59 package - non-part-marking side activation polarity. | Requires magnet orientation flipped vs. AH3716Q-SA-7; unsuitable for existing SOT23 footprint designs. | Select only when redesigning sensor housing for top-side magnet access. |
| TLE4961-3U | Higher BOP (+150G min), no chopper stabilization - greater temperature drift (>±1.2G/°C). | Limited to ambient ≤125°C; not Grade 0 qualified - excludes turbocharger or transmission valve body use. | Acceptable for cabin or front-end accessory drive applications where thermal margin is lower. |
Compared with AL3716QW-7 and TLE4961-3U, the AH3716Q-SA-7 uniquely combines SOT23 footprint compatibility, part-marking-side South-pole activation, and Grade 0 qualification - making it the only drop-in solution for space-constrained camshaft sensors requiring full under-hood temperature coverage.
Availability
AH3716Q-SA-7 is available at Aetrix Electronics and suitable for engine management systems, electric power steering modules, and transmission control units requiring stable component supply across automotive production lifecycles.
Supply support for AH3716Q-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 manufacturer specializing in discrete, analog, and mixed-signal solutions for automotive, industrial, and computing markets.
The AH371xQ series belongs to Diodes' AEC-Q100-qualified Hall-effect sensor product line, engineered specifically for high-reliability position and speed sensing in harsh automotive environments.
FAQ
What is the magnetic polarity configuration for AH3716Q-SA-7?
The AH3716Q-SA-7 activates with a South pole applied to the part-marking side of the SOT23 (Type S) package and deactivates with a North pole. This polarity orientation is fixed per package type and cannot be reversed via configuration pins or external circuitry.
Does AH3716Q-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 datasheet. This stabilizes the internal bandgap regulator and enhances immunity to conducted noise from alternator ripple or ignition transients.
Can AH3716Q-SA-7 operate with a 3.3V microcontroller I/O rail?
Yes - its open-drain output is compatible with 3.3V logic when paired with a 3.3V pull-up resistor. The output saturation voltage remains ≤0.42V at 20mA sink, ensuring valid LOW-level recognition by 3.3V CMOS inputs even at elevated temperatures.
Is AH3716Q-SA-7 pin-compatible with earlier AH371xQ variants?
Yes - all AH371xQ devices share identical SOT23 (Type S) pinout (VDD-GND-OUTPUT), same footprint, and identical electrical interface. Only magnetic sensitivity (BOP/BRP) differs; no layout or schematic changes are needed when upgrading within the family.
AH3716Q-SA-7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Function:
- -
- Technology:
- -
- Polarization:
- -
- Sensing Range:
- -
- Test Condition:
- -
- Voltage - Supply:
- -
- Current - Supply (Max):
- -
- Current - Output (Max):
- -
- Output Type:
- -
- Features:
- -
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- -
- Supplier Device Package:
- -
AH3716Q-SA-7 FAQ
1.How can I place an order for AH3716Q-SA-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for AH3716Q-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 AH3716Q-SA-7 reliable?
The price and inventory of AH3716Q-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 AH3716Q-SA-7 is usually 5 days.
3.What payment methods are accepted for AH3716Q-SA-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AH3716Q-SA-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AH3716Q-SA-7?
AH3716Q-SA-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AH3716Q-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 AH3716Q-SA-7?
For technical support, including AH3716Q-SA-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AH3716Q-SA-7 requirements.
6.How does Aetrix verify that AH3716Q-SA-7 is sourced from the original manufacturer or authorized distributors?
All AH3716Q-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 AH3716Q-SA-7 meets industry standards.
7.What is the process for return or replacement of AH3716Q-SA-7?
All AH3716Q-SA-7 units undergo pre-shipment inspection (PSI). If there is an issue with AH3716Q-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 AH3716Q-SA-7 part is unused and in its original packaging.
Return procedure for AH3716Q-SA-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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