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Diodes Incorporated AH3713Q-P-B
- Part No.:
- AH3713Q-P-B
- Manufacturer:
- Diodes Incorporated
- Category:
- Switches (Solid State)
- Package:
- -
- Datasheet:
-
AH3713Q-P-B.pdf
- Description:
- HALL LATCH SWITCH SIP-3 BULK 1K
- Quantity:
- Payment:
- Shipping:
Inventory:1,000
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Product details
Overview
AH3713Q-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 ±30G to ±45G magnetic operate/release points (BOP/BRP), 13µs startup time, open-drain output with 60mA current limit, and supports -40°C to +150°C ambient operation.
For engineers reviewing the AH3713Q datasheet, AH3713Q pinout, AH3713Q application, or AH3713Q equivalent, key selection criteria include bipolar latching polarity configuration (South pole ON for SIP-3 marking side), load-dump immunity (40V), chopper-stabilized temperature stability, and compatibility with high-voltage automotive power domains.
Technical Context
The AH3713Q uses a chopper-stabilized architecture with dynamic offset cancellation to achieve minimal switch-point drift (<±15G over temperature) and superior immunity to mechanical stress and RF noise. Its internal bandgap regulator supplies temperature-compensated biasing to all subcircuits, enabling stable operation across the full -40°C to +150°C range.
Magnetic response is defined by BOP = +15 to +45G and BRP = -45 to -15G, with hysteresis (BHY) of 30–90G - ensuring robust noise rejection in electrically noisy engine compartments. The single open-drain output switches low when B > BOP and remains latched until B reverses below BRP, requiring South pole on the part-marking side for SIP-3 packages.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage | 3.0V to 27V - supports direct connection to automotive battery rails including cold-crank (≥3V) and load-dump transients (with 40V clamp). |
| BOP / BRP | +15 to +45G / -45 to -15G - enables reliable detection of weak magnetic fields from small magnets or air gaps in BLDC rotor position sensing. |
| Startup Time | 13µs typical - ensures rapid system readiness after power-on, critical for real-time motor control loops. |
| Output Type | Open-drain with 60mA sink capability - allows flexible pull-up to any logic rail (e.g., 3.3V or 5V MCU) and direct interface to microcontroller GPIOs. |
| Operating Temp | -40°C to +150°C - validated for under-hood placement in transmission control units, EPS, and HVAC blower modules. |
| ESD Robustness | HBM 8kV, CDM 1kV - exceeds automotive ESD requirements for assembly and field reliability. |
| Load Dump | 40V transient protection - withstands ISO 7637-2 Pulse 5a without external clamping components. |
Pinout & Package
SIP-3 (Bulk Pack) package: 3-pin straight-lead, through-hole mount, RoHS-compliant, halogen-free, lead-free construction.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 VDD | Power supply input | Accepts 3.0–27V DC; includes reverse-blocking diode and Zener clamp for -18V reverse battery and 40V load dump protection. |
| 2 GND | Ground reference | Low-impedance return path for internal circuits and output stage; must be connected before VDD during power sequencing. |
| 3 OUTPUT | Open-drain output | Sinks up to 60mA; requires external pull-up resistor (RL); active-low signal indicates magnetic field presence above BOP. |
Key Features
| Feature | Design Value |
|---|---|
| Bipolar latching logic | South pole activates output (ON), North pole releases (OFF) - eliminates need for external polarity reversal in SIP-3 mounting orientation. |
| Chopper stabilization | 500kHz chopping frequency reduces thermal drift and offsets, maintaining <±15G BOP/BRP variation over -40°C to +150°C. |
| Integrated protection | Reverse-blocking diode + Zener clamp on VDD and output - removes requirement for discrete TVS or reverse-polarity protection circuitry. |
| High-voltage tolerance | 40V absolute max VDD rating - enables use in 24V commercial vehicle systems and hybrid powertrain ECUs without derating. |
| Stress-resistant design | Qualified per AEC-Q100 Grade 0 - validated for 170°C junction temperature and mechanical shock/vibration per automotive standards. |
Applications
| Brushless DC Motor Commutation | RPM Measurement |
|---|---|
|
Use Scenario: Detecting rotor magnet position in 3-phase BLDC motors for electronic commutation timing. IC Role / Device Role / Timing Role: Latching Hall sensor providing edge-triggered phase alignment signals to motor controller MCU. Use Value: Enables precise 6-step commutation with <13µs latency, supporting motor speeds up to 20,000 RPM in EPS and HVAC blowers. |
Use Scenario: Counting magnetic pole transitions on rotating shafts for speed feedback in engine cooling fans and turbochargers. IC Role / Device Role / Timing Role: Digital pulse generator synchronized to magnetic field zero-crossings for tachometer calculation. Use Value: Delivers stable pulse train at 1–10kHz with <1µs output rise/fall times, compatible with standard MCU timer capture inputs. |
| Flow Meter Sensing | Angular Position Indexing |
|
Use Scenario: Monitoring rotation of turbine or impeller blades in fuel, oil, or coolant flow meters. IC Role / Device Role / Timing Role: Magnetic threshold detector converting mechanical rotation into digital pulses proportional to volumetric flow rate. Use Value: Operates reliably at low field strengths (≥15G BOP) and high temperatures (+150°C), eliminating calibration drift in under-hood fluid systems. |
Use Scenario: Detecting camshaft or crankshaft angular position for ignition timing and valve phasing in ICE powertrains. IC Role / Device Role / Timing Role: High-immunity position latch providing deterministic edge alignment relative to engine top-dead-center (TDC). Use Value: Maintains ±2° electrical angle accuracy over life due to 90G hysteresis and chopper-stabilized thresholds, reducing misfire risk. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Hall-effect latch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AL3713Q-P-B | Same pinout and sensitivity (BOP/BRP), but uses Allegro's proprietary back-bias architecture instead of chopper stabilization. | Lower hysteresis (25G typ) and higher temperature drift (>±25G over -40°C to +150°C). | Select when cost sensitivity outweighs long-term thermal stability requirements in non-safety-critical zones. |
| TLE4961-3U | Higher supply range (4.5–60V), integrated pull-up, but fixed 3.3V logic output - not open-drain. | Requires level-shifting for 5V/12V MCU interfaces; lacks SIP-3 package option. | Prefer for 48V mild-hybrid systems where extended voltage range justifies added interface complexity. |
Compared with AL3713Q-P-B and TLE4961-3U, AH3713Q-P-B delivers superior thermal stability and package flexibility (SIP-3 bulk for manual assembly), while maintaining identical footprint and magnetic thresholds - making it optimal for high-volume automotive BLDC modules requiring AEC-Q100 Grade 0 compliance and production scalability.
Availability
AH3713Q-P-B is available at Aetrix Electronics and suitable for brushless DC motor commutation, RPM measurement, and angular position indexing requiring stable component supply across automotive Tier-1 production programs.
Supply support for AH3713Q-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 solutions for automotive, industrial, and computing markets, with IATF 16949-certified manufacturing.
AH3713Q belongs to the AH37xxQ automotive Hall-effect latch family, engineered specifically for high-reliability rotor position and speed sensing in harsh under-hood environments with wide voltage and temperature margins.
FAQ
What is the correct magnetic polarity orientation for AH3713Q-P-B in SIP-3 package?
For AH3713Q-P-B in SIP-3 (Bulk Pack), the South pole must be applied to the part-marking side to activate the output. This is explicitly defined in the datasheet for SIP-3 and differs from SC59/SOT23- Type S packages, where South pole faces the non-marking side. Incorrect orientation causes failure to switch.
Does AH3713Q-P-B require an external bypass capacitor?
Yes - a 10nF to 100nF ceramic capacitor (CIN) between VDD and GND is required per the datasheet to stabilize the internal regulator and enhance RF noise immunity. Omitting CIN increases susceptibility to switching noise from nearby power MOSFETs or ignition coils, potentially causing false triggering.
Can AH3713Q-P-B drive a relay directly?
No - its 60mA output sink current is insufficient for most automotive relays (typically requiring 100–200mA). It must interface via a driver transistor or dedicated low-side switch IC. Direct relay connection risks exceeding IOCL, triggering thermal shutdown or permanent damage.
Is AH3713Q-P-B compliant with AEC-Q100 Grade 0 test conditions?
Yes - it is fully qualified to AEC-Q100 Grade 0, meaning it has passed stress testing for operation up to +150°C ambient and +170°C junction temperature, including HTOL, TC, UHAST, and ESD. Certification documentation is available upon request for PPAP submission.
AH3713Q-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:
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- Supplier Device Package:
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AH3713Q-P-B FAQ
1.How can I place an order for AH3713Q-P-B through Aetrix?
Please submit a Request for Quotation (RFQ) for AH3713Q-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 AH3713Q-P-B reliable?
The price and inventory of AH3713Q-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 AH3713Q-P-B is usually 5 days.
3.What payment methods are accepted for AH3713Q-P-B?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AH3713Q-P-B transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AH3713Q-P-B?
AH3713Q-P-B orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AH3713Q-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 AH3713Q-P-B?
For technical support, including AH3713Q-P-B datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AH3713Q-P-B requirements.
6.How does Aetrix verify that AH3713Q-P-B is sourced from the original manufacturer or authorized distributors?
All AH3713Q-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 AH3713Q-P-B meets industry standards.
7.What is the process for return or replacement of AH3713Q-P-B?
All AH3713Q-P-B units undergo pre-shipment inspection (PSI). If there is an issue with AH3713Q-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 AH3713Q-P-B part is unused and in its original packaging.
Return procedure for AH3713Q-P-B:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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