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Diodes Incorporated AH3716Q-P-B
- Part No.:
- AH3716Q-P-B
- Manufacturer:
- Diodes Incorporated
- Category:
- Switches (Solid State)
- Package:
- -
- Datasheet:
-
AH3716Q-P-B.pdf
- Description:
- HALL LATCH SWITCH SIP-3 BULK 1K
- Quantity:
- Payment:
- Shipping:
Inventory:1,000
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Product details
Overview
AH3716Q-P-B from Diodes Incorporated is an AEC-Q100 Grade 0 qualified automotive Hall-effect latch IC in SIP-3 (Bulk Pack) 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-P-B datasheet, AH3716Q-P-B pinout, AH3716Q-P-B application, or AH3716Q-P-B equivalent, key selection criteria include bipolar latching polarity configuration, high-voltage transient tolerance (40V load dump), chopper-stabilized temperature stability (−40°C to +150°C), and package-specific magnetic pole orientation (South pole to part-marking side for SIP-3).
Technical Context
The AH3716Q employs 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 (160–280G) across −40°C to +150°C ambient.
It integrates reverse-blocking diode and Zener clamp on VDD, plus output overcurrent limiting and Zener clamping. The single open-drain output switches low when perpendicular magnetic flux exceeds +80G (BOP typ.) and remains latched until flux reverses below −80G (BRP typ.), with polarity defined by SIP-3 package orientation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 3.0V to 27V - supports direct connection to automotive battery rails including cold-crank (6V) and load-dump (up to 40V transient) |
| BOP / BRP (Typ.) | +110G / −110G - enables reliable switching in high-air-gap or high-vibration environments like transmission speed 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 rapid system readiness after ignition power-on, critical for real-time RPM measurement |
| Operating Temperature | −40°C to +150°C - qualified for under-hood placement in engine control modules and electric power steering units |
| Hysteresis (BHY) | 220G typical - prevents chatter in noisy magnetic fields near rotating ferrous targets |
| ESD Robustness | HBM 8kV, CDM 1kV - withstands handling and assembly ESD events without latch-up or parametric shift |
Pinout & Package
SIP-3 (Bulk Pack) package with straight leads; 3-pin through-hole format optimized for high-reliability automotive PCB mounting and automated soldering. Pin 1 = VDD, Pin 2 = GND, Pin 3 = OUTPUT - magnetic sensing face oriented toward part marking side.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (VDD) | Power supply input | Accepts 3.0–27V DC; includes integrated reverse-blocking diode and 36V Zener clamp for load-dump protection |
| 2 (GND) | Ground reference | Common return path for internal regulation, output switch, and magnetic sensor core; must be low-impedance |
| 3 (OUTPUT) | Open-drain output | Sinks up to 60mA; requires external pull-up resistor; logic-low indicates active magnetic field (South pole detected) |
Key Features
| Feature | Design Value |
|---|---|
| Bipolar latching operation | South pole activates output (low), North pole releases - eliminates need for external bias magnet in rotary position sensing |
| Chopper-stabilized architecture | Reduces switch-point drift to <±0.5G/°C - maintains accuracy across full automotive temperature range without calibration |
| 40V load dump protection | Withstands ISO 7637-2 Pulse 5a transients without external TVS - reduces BOM count in engine control units |
| Package-specific pole orientation | SIP-3 requires South pole applied to part-marking side - ensures correct magnetic vector alignment for cam/crank target wheels |
| AEC-Q100 Grade 0 qualification | Validated for 150°C junction operation - supports placement in high-heat zones such as transmission control modules |
Applications
| Engine Crankshaft Position Sensing | Electric Power Steering Motor Commutation |
|---|---|
|
Use Scenario: Detecting toothed wheel rotation on crankshaft to determine engine speed and top-dead-center timing. IC Role / Device Role / Timing Role: Bipolar latch provides robust edge-triggered signal synchronized to gear tooth passage; chopper stabilization rejects thermal drift during extended idle heat soak. Use Value: Enables precise ignition timing and fuel injection control at −40°C cold start and +150°C under-hood operation without recalibration. |
Use Scenario: Providing six-step commutation signals for 3-phase BLDC motor in EPS rack-and-pinion actuator. IC Role / Device Role / Timing Role: Latched output delivers deterministic phase alignment relative to rotor magnet position; 13µs startup ensures immediate torque response on assist demand. Use Value: Eliminates timing jitter in safety-critical steering assist, meeting ASIL-B functional safety requirements via deterministic magnetic switching. |
| Transmission Output Shaft Speed Monitoring | Brake Caliper Position Feedback |
|
Use Scenario: Measuring rotational speed of transmission output shaft using ferrous gear ring mounted on differential carrier. IC Role / Device Role / Timing Role: High-sensitivity BOP (+110G typ.) allows larger air gaps (>2mm) between sensor and target, accommodating mechanical tolerances and thermal expansion. Use Value: Reduces assembly cost by relaxing mechanical alignment requirements while maintaining RPM accuracy within ±0.5% over lifetime. |
Use Scenario: Detecting piston extension/retraction in electromechanical brake calipers for closed-loop position control. IC Role / Device Role / Timing Role: Open-drain output interfaces directly with 5V MCU GPIO; hysteresis (220G) prevents false triggering from vibration-induced field fluctuations. Use Value: Enables fail-safe brake actuation monitoring with no external filtering components, reducing PCB area and validation effort. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Hall-effect latch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AL3716QSA-7 | SOT23-3 package; same magnetic thresholds but requires South pole on non-marking side | Surface-mount assembly; unsuitable for through-hole SIP-3 footprint or high-vibration bulk-pack retention | Select when board space is constrained and reflow compatibility is required; verify pole orientation during layout |
| TLE4961-3U | Higher BOP (+150G min), wider supply (4.5–36V), integrated diagnostics; not AEC-Q100 Grade 0 | Supports higher-temperature zones (e.g., turbocharger housing); adds fault reporting but increases BOM cost | Choose for diagnostic-rich systems where Grade 0 is not mandated; avoid if strict Grade 0 compliance is contractually required |
Compared with AL3716QSA-7 and TLE4961-3U, AH3716Q-P-B uniquely combines SIP-3 mechanical robustness, Grade 0 qualification, and part-marking-side South-pole activation - making it optimal for cost-sensitive, high-reliability crankshaft and transmission speed sensing where through-hole mounting and thermal margin are prioritized.
Availability
AH3716Q-P-B is available at Aetrix Electronics and suitable for engine control units, electric power steering systems, and transmission control modules requiring stable component supply across automotive production lifecycles.
Supply support for AH3716Q-P-B 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, with manufacturing certified to IATF 16949 and AEC-Q100 qualification infrastructure.
AH3716Q belongs to the AH37xxQ automotive Hall-effect latch family, engineered specifically for contactless position and speed sensing in harsh under-hood environments where reliability, temperature resilience, and transient immunity are non-negotiable.
FAQ
What is the magnetic polarity requirement for AH3716Q-P-B activation?
The AH3716Q-P-B in SIP-3 (Bulk Pack) package requires a South pole applied to the part-marking side to activate the output. This orientation is fixed per package type - reversing the magnet polarity or mounting direction will prevent switching. The datasheet specifies this explicitly for SIP-3, distinguishing it from SC59 or SOT23 variants.
Does AH3716Q-P-B require an external capacitor on VDD?
Yes, a 10nF to 100nF ceramic decoupling capacitor (CIN) is recommended between VDD and GND, placed as close as possible to the SIP-3 pins. This stabilizes the internal bandgap regulator, improves noise immunity against RF interference, and ensures clean startup behavior - especially critical during automotive load-dump transients.
Can AH3716Q-P-B be used in systems with 3.3V microcontrollers?
Yes - its open-drain output is compatible with 3.3V logic when paired with a 3.3V pull-up resistor. The output saturation voltage is ≤0.42V at 20mA sink, guaranteeing valid logic-low levels. No level-shifting circuitry is needed, simplifying interface design for modern low-voltage ECUs.
How does the chopper-stabilized architecture improve performance over conventional Hall latches?
Chopper stabilization actively cancels offset voltage drift caused by temperature gradients and mechanical stress, reducing BOP/BRP variation to <±0.5G/°C. This enables consistent switching accuracy across −40°C to +150°C without factory calibration - a key advantage over non-chopped devices that exhibit >2G/°C drift and require complex compensation algorithms.
AH3716Q-P-B Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- -
- Packaging:
- Bulk
- 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-P-B FAQ
1.How can I place an order for AH3716Q-P-B through Aetrix?
Please submit a Request for Quotation (RFQ) for AH3716Q-P-B 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-P-B reliable?
The price and inventory of AH3716Q-P-B are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AH3716Q-P-B is usually 5 days.
3.What payment methods are accepted for AH3716Q-P-B?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AH3716Q-P-B transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AH3716Q-P-B?
AH3716Q-P-B orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AH3716Q-P-B 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-P-B?
For technical support, including AH3716Q-P-B datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AH3716Q-P-B requirements.
6.How does Aetrix verify that AH3716Q-P-B is sourced from the original manufacturer or authorized distributors?
All AH3716Q-P-B 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-P-B meets industry standards.
7.What is the process for return or replacement of AH3716Q-P-B?
All AH3716Q-P-B units undergo pre-shipment inspection (PSI). If there is an issue with AH3716Q-P-B, 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-P-B part is unused and in its original packaging.
Return procedure for AH3716Q-P-B:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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