My Inquiry
My Account
Diodes Incorporated AH3715Q-SA-7
- Part No.:
- AH3715Q-SA-7
- Manufacturer:
- Diodes Incorporated
- Category:
- Switches (Solid State)
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
AH3715Q-SA-7.pdf
- Description:
- HALL LATCH SWITCH SSOT23 T&R 3K
- Quantity:
- Payment:
- Shipping:
Inventory:2,999
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
AH3715Q-SA-7 from Diodes Incorporated is an AEC-Q100 Grade 0 qualified automotive Hall-effect bipolar 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 ±50G to ±90G magnetic operate/release points (BOP/BRP), open-drain output with 30–60mA current limit, and supports -40°C to +150°C ambient operation.
For engineers reviewing the AH3715Q-SA-7 datasheet, AH3715Q-SA-7 pinout, AH3715Q-SA-7 application, or AH3715Q-SA-7 equivalent, this device delivers robust magnetic switching performance in high-voltage automotive subsystems including motor control, RPM measurement, and contactless position indexing where supply resilience, thermal stability, and polarity-specific latching behavior are critical.
Technical Context
The AH3715Q employs chopper-stabilized architecture with dynamic offset cancellation to minimize switch-point drift over temperature and stress, achieving ±50G to ±90G BOP/BRP with 100–180G hysteresis (BHY). Its internal bandgap regulator supplies temperature-compensated bias to analog blocks, enabling stable operation across the full -40°C to +150°C range.
It integrates reverse-blocking diode and Zener clamp on VDD (rated to 40V transient), output overcurrent limiting (30–60mA), and ESD protection (8kV HBM, 1kV CDM). The single open-drain output switches low when South pole flux exceeds BOP and remains latched until North pole flux falls below BRP - polarity orientation depends on package marking side.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 3.0V to 27V - supports direct battery connection in 12V/24V automotive systems without external regulation. |
| BOP / BRP (Typical) | +70G / -70G - enables reliable latching at moderate field strengths with 140G hysteresis for noise immunity. |
| Output Type | Open-drain - allows flexible pull-up to any voltage ≤27V and simplifies interfacing with MCU GPIO or logic inputs. |
| Startup Time | 13µs typical - ensures rapid system readiness after power-on, critical for real-time motor commutation timing. |
| Operating Temperature | -40°C to +150°C - qualified for under-hood and transmission-mounted applications per AEC-Q100 Grade 0. |
| Load Dump Protection | 40V transient rating - withstands ISO 7637-2 Pulse 5a surges without external clamping components. |
| Output Current Limit | 30–60mA - protects internal switch and external load during short-circuit or overload conditions. |
Pinout & Package
SOT23 (Type S) package with 3-pin surface-mount footprint; pin 1 = VDD, pin 2 = GND, pin 3 = OUTPUT; part marking side defines South-pole activation orientation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - VDD | Power Supply Input | Accepts 3.0–27V DC; includes reverse-blocking diode and 36V Zener clamp for fault resilience. |
| 2 - GND | Ground Reference | Common return path for internal circuits and output sink current; must be low-impedance for stable operation. |
| 3 - OUTPUT | Open-Drain Output | Sinks up to 60mA; requires external pull-up resistor (RL); active-low latched state driven by magnetic polarity. |
Key Features
| Feature | Design Value |
|---|---|
| Chopper-Stabilized Architecture | Reduces thermal drift of BOP/BRP to <±10% over -40°C to +150°C, ensuring consistent switching thresholds. |
| Package-Specific Polarity Mapping | SOT23 (Type S): South pole to part-marking side activates output - eliminates ambiguity in mechanical mounting orientation. |
| Integrated Supply Protection | Reverse-blocking diode + 36V Zener clamp on VDD enables direct connection to automotive battery without discrete protection. |
| High Immunity to RF Noise | Validated performance in noisy engine bay environments; no external filtering required beyond 10nF–100nF bypass capacitor. |
| AEC-Q100 Grade 0 Qualification | Qualified for ambient temperatures up to +150°C - meets requirements for powertrain, transmission, and turbocharger position sensing. |
Applications
| BLDC Motor Commutation | RPM Measurement |
|---|---|
|
Use Scenario: Detecting rotor magnet position in 12V/24V automotive blower motors or EPS assist motors. IC Role / Device Role / Timing Role: Bipolar latch provides edge-triggered, polarity-sensitive commutation signals synchronized to magnet rotation. Use Value: Enables precise 6-step commutation without external signal conditioning; 13µs startup time supports fast motor enable sequences. |
Use Scenario: Monitoring rotational speed of crankshaft or camshaft in engine management systems. IC Role / Device Role / Timing Role: Generates clean, jitter-free pulse train proportional to shaft speed via magnetic pole transitions. Use Value: Open-drain output interfaces directly to microcontroller timer capture inputs; 140G hysteresis rejects vibration-induced false triggers. |
| Flow Meter Sensing | Transmission Gear Position Indexing |
|
Use Scenario: Detecting rotation of turbine blades in fuel or coolant flow meters exposed to under-hood temperatures. IC Role / Device Role / Timing Role: Latched output maintains state between magnet passes, enabling low-frequency counting with minimal MCU intervention. Use Value: -40°C to +150°C operation ensures reliability in hot fluid environments; 40V load dump rating survives alternator transients. |
Use Scenario: Identifying gear selection in automatic transmissions using stationary magnets and rotating sensor targets. IC Role / Device Role / Timing Role: Provides deterministic on/off states for each gear detent position based on fixed magnet alignment. Use Value: Package-specific polarity mapping ensures repeatable activation regardless of PCB orientation; AEC-Q100 PPAP capability supports OEM production release. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Hall-effect latch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AL3715QSA-7 | Same sensitivity grade (BOP/BRP ≈ ±70G), identical SOT23 (Type S) package, but manufactured by Allegro - different ESD rating (4kV HBM vs. 8kV) and no AEC-Q100 Grade 0 certification. | Lacks Grade 0 qualification; not approved for powertrain-critical positions requiring >125°C ambient operation. | Select only for non-safety-critical cabin or body applications where cost is prioritized over extended temperature compliance. |
| TLE4961-1K | Higher sensitivity (BOP ≈ ±25G), integrated pull-up, but narrower supply range (4.5–24V) and no 40V load dump rating. | Requires external 27V-compatible pull-up for 24V+ systems; unsuitable for 27V nominal battery architectures or load dump survival testing. | Prefer for low-field applications with tight space constraints; avoid where 27V operation or ISO 7637-2 Pulse 5a compliance is mandatory. |
Compared with AL3715QSA-7 and TLE4961-1K, the AH3715Q-SA-7 uniquely combines AEC-Q100 Grade 0 qualification, 3.0–27V operation, 40V transient tolerance, and SOT23 polarity mapping - making it the only option qualified for high-reliability, high-voltage automotive commutation and indexing where thermal margin and surge resilience are non-negotiable.
Availability
AH3715Q-SA-7 is available at Aetrix Electronics and suitable for BLDC motor control, RPM sensing, and transmission position indexing requiring stable component supply across automotive production lifecycles.
Supply support for AH3715Q-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 company specializing in discrete, analog, and mixed-signal solutions for automotive, industrial, and computing markets.
The AH371xQ series belongs to Diodes' automotive Hall-effect sensor product line, engineered specifically for robust magnetic position and speed detection in harsh under-hood environments with emphasis on AEC-Q100 compliance and system-level surge resilience.
FAQ
What is the magnetic polarity requirement for activation in the AH3715Q-SA-7?
The AH3715Q-SA-7 in SOT23 (Type S) package requires a South pole applied to the part-marking side to turn the output ON. This polarity orientation is fixed per package type and confirmed in the datasheet's magnetic characteristics table and pin diagram. Reversing polarity will prevent activation.
Does the AH3715Q-SA-7 require an external bypass capacitor?
Yes - a 10nF to 100nF ceramic capacitor (CIN) between VDD and GND is required for power stabilization and enhanced RF noise immunity, as specified in the Typical Applications Circuit. Omitting it may cause erratic switching or increased susceptibility to electrical interference.
Can the AH3715Q-SA-7 operate from a 27V supply continuously?
Yes - 27V is within the recommended continuous operating range (3.0V to 27V). The 40V absolute maximum rating applies only to transient load dump events (per ISO 7637-2 Pulse 5a), not steady-state operation. Continuous 27V use is fully supported and characterized.
How does the chopper-stabilized design improve performance over conventional Hall latches?
The chopper-stabilized architecture actively cancels offset voltage drift caused by temperature gradients and mechanical stress, reducing BOP/BRP variation to <±10% over -40°C to +150°C. This eliminates need for external calibration and ensures consistent latching behavior in thermally cycling automotive environments.
AH3715Q-SA-7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- TO-236-3, SC-59, SOT-23-3
- 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:
- Surface Mount
- Supplier Device Package:
- SOT-23-3
AH3715Q-SA-7 FAQ
1.How can I place an order for AH3715Q-SA-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for AH3715Q-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 AH3715Q-SA-7 reliable?
The price and inventory of AH3715Q-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 AH3715Q-SA-7 is usually 5 days.
3.What payment methods are accepted for AH3715Q-SA-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AH3715Q-SA-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AH3715Q-SA-7?
AH3715Q-SA-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AH3715Q-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 AH3715Q-SA-7?
For technical support, including AH3715Q-SA-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AH3715Q-SA-7 requirements.
6.How does Aetrix verify that AH3715Q-SA-7 is sourced from the original manufacturer or authorized distributors?
All AH3715Q-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 AH3715Q-SA-7 meets industry standards.
7.What is the process for return or replacement of AH3715Q-SA-7?
All AH3715Q-SA-7 units undergo pre-shipment inspection (PSI). If there is an issue with AH3715Q-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 AH3715Q-SA-7 part is unused and in its original packaging.
Return procedure for AH3715Q-SA-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
AH3715Q-SA-7 Tags
-
TCS40DLR,LF
Toshiba Semiconductor and Storage
-
DRV5032FBDBZR
Texas Instruments
-
DRV5032FADBZR
Texas Instruments
-
AH1912-FA-7
Diodes Incorporated
-
AH1913-W-7
Diodes Incorporated
-
AH1911-W-7
Diodes Incorporated
-
TLI49631MXTSA1
Infineon Technologies
-
SM453R
Honeywell Sensing and Productivity Solutions
-
MLX90248ESE-EBA-000-RE
Melexis Technologies NV
-
MLX92213ELD-AAA-000-RE
Melexis Technologies NV
-
TLE4913HTSA1
Infineon Technologies
-
US5781ESE-AAA-000-RE
Melexis Technologies NV
Tech Hub
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
LDO regulator guide covering low dropout voltage, power dissipation, thermal design, PSRR, output noise, capacitor stability, adjustable LDO circuits, LDO vs buck converter and datasheet selection chec…
Conditional Access Module guide covering CAM meaning, CI/CI+ interface, smart card authorization, DVB security workflow, TV and set-top box compatibility, internal electronics, ESD protection, connecto…
Guide to electronic component obsolescence covering EOL risk, PCN/PDN notices, last-time buy planning, replacement options, form-fit-function validation, counterfeit risk and BOM lifecycle management.
18650 battery guide covering lithium-ion cell basics, 3.6V/3.7V voltage, 4.2V charging, mAh and Wh capacity, protected cells, chargers, BMS, series-parallel packs, holders, welding and sourcing checks.…
Hall effect sensor guide covering working principle, linear and digital sensors, Arduino circuits, current sensing, speed detection, automotive applications, A3144 examples, signal filtering and datash…
Product Change Notification guide for electronic components, covering PCN meaning, PCN vs PDN/EOL, common change types, risk levels, form-fit-function review, engineering validation, BOM control, LTB/L…
A practical guide to blend door actuators, covering HVAC function, symptoms, location, AC and heater issues, reset and calibration, replacement cost, electrical diagnosis, compatibility checks, and rep…
Engineering guide to Raspberry Pi alternatives, covering chip-level differences, Orange Pi, ROCK, Jetson, Banana Pi, NanoPi, Compute Module, Pico, GPIO, camera, HAT compatibility, and replacement risks…
