My Inquiry
My Account
Diodes Incorporated AH3723Q-SA-7
- Part No.:
- AH3723Q-SA-7
- Manufacturer:
- Diodes Incorporated
- Category:
- Switches (Solid State)
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
AH3723Q-SA-7.pdf
- Description:
- HALL LATCH SWITCH SSOT23 T&R 3K
- Quantity:
- Payment:
- Shipping:
Inventory:2,780
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
AH3723Q-SA-7 from Diodes Incorporated is an AEC-Q100 Grade 0 qualified, high-voltage bipolar Hall-effect latch IC designed for automotive position sensing and BLDC motor commutation. It operates from 3.0V to 28V, features ±30G typical operate/release points (BOP/BRP), 60mA output current limit, and -40°C to +150°C operation-enabling robust angular sensing in engine camshaft or transmission gear position detection.
For engineers reviewing the AH3723Q-SA-7 datasheet, AH3723Q-SA-7 pinout, AH3723Q-SA-7 application, or AH3723Q-SA-7 equivalent, key selection criteria include magnetic sensitivity tolerance across temperature, open-drain output drive capability under 28V supply, latch polarity alignment with package marking side, and AEC-Q100 qualification for under-hood deployment.
Technical Context
The AH3723Q-SA-7 uses chopper-stabilized architecture with dynamic offset cancellation to maintain stable BOP/BRP thresholds across -40°C to +150°C. Its internal bandgap regulator supplies temperature-compensated bias to analog circuitry, minimizing switch-point drift.
It implements a bipolar latch function: South pole applied to the marked side (SOT23/SC59/SIP-3) pulls the open-drain output low; North pole releases it. Hysteresis is 60G typical (|BOP| − |BRP|), ensuring noise-immune state retention during flux reversal.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 3.0V to 28V - supports direct connection to automotive battery rail without external regulation |
| Operating Temperature | -40°C to +150°C - qualified for under-hood engine compartment placement |
| BOP / BRP (Typ) | +30G / -30G - enables reliable detection of small ferrous target displacements at high ambient temperatures |
| Output Type | Open-drain with 60mA current limit - interfaces directly with 3.3V/5V/12V microcontroller inputs via pull-up resistor |
| Startup Time | 10µs typical - ensures rapid system readiness after ignition power-on |
| ESD Robustness | HBM 8kV, CDM 1kV - withstands handling and assembly electrostatic events in automotive production |
| Output On Voltage | 0.2V at 20mA - minimizes power loss and heat generation in high-duty-cycle switching |
Pinout & Package
Package: SC59 (3-pin surface-mount). Pinout is identical across SC59, SOT23 (Type S), and SIP-3 variants per Diodes DS46144 Rev. 3–2.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | VDD | Power input with integrated reverse-blocking diode and zener clamp - protects against load dump and reverse battery connection |
| 2 | GND | Ground reference for internal regulator and output stage - requires low-impedance PCB return path for EMI suppression |
| 3 | OUTPUT | Open-drain output with overcurrent limit and zener clamp - sinks up to 60mA; requires external pull-up for logic-level interface |
Key Features
| Feature | Design Value |
|---|---|
| Chopper stabilization | Reduces thermal drift of BOP/BRP to <±0.5G/°C - maintains timing accuracy in variable-temperature camshaft sensing |
| Bipolar latch polarity | South-pole activation on part-marking side for SC59/SOT23/SIP-3 - simplifies mechanical mounting alignment in rotary encoder assemblies |
| Integrated protection | Reverse-blocking diode + supply zener clamp - eliminates need for external TVS in 12V/24V automotive systems |
| High ESD immunity | 8kV HBM - meets IATF 16949 assembly line ESD control requirements without additional shielding |
| AEC-Q100 Grade 0 | Qualified to +150°C junction temperature - supports placement near turbochargers or exhaust manifolds |
Applications
| Engine Camshaft Position Sensing | BLDC Motor Commutation |
|---|---|
Use Scenario: Detecting cam lobe passage in gasoline/diesel engines for precise ignition timing and variable valve timing control. IC Role / Device Role / Timing Role: Bipolar latch providing edge-triggered digital signal synchronized to cam rotation phase. Use Value: ±30G sensitivity and 60G hysteresis prevent false triggering from vibration-induced flux noise during cold start. |
Use Scenario: Six-step commutation feedback for 3-phase brushless DC motors in electric power steering (EPS) and HVAC blowers. IC Role / Device Role / Timing Role: Latched Hall output defining rotor electrical angle sectors for MOSFET gate driver sequencing. Use Value: 10µs startup time ensures immediate motor response at vehicle power-on; 28V tolerance allows direct battery connection. |
| Transmission Gear Position Detection | Wheel Speed Sensing (Non-ABS) |
Use Scenario: Monitoring gear selector lever position or planetary carrier rotation in automatic transmissions. IC Role / Device Role / Timing Role: Magnetic latch detecting ferrous gear tooth or flag presence to determine mechanical state. Use Value: -40°C to +150°C operation sustains functionality during extreme thermal cycling in transmission oil environments. |
Use Scenario: Measuring rotational speed of non-magnetic steel wheels using tone rings in chassis-mounted suspension modules. IC Role / Device Role / Timing Role: Digital position latch generating pulse train proportional to wheel RPM for vehicle dynamics control. Use Value: Open-drain output with 60mA sink current drives long PCB traces to ECUs without signal degradation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar bipolar Hall latch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AL3723QSA-7 | Same BOP/BRP specs and SC59 package; manufactured by Allegro MicroSystems | Identical functional behavior but different AEC-Q100 test report documentation structure | Select when Allegro's PPAP documentation format is required by Tier-1 customer |
| TLE4963-2M | Higher BOP (+45G typ), wider hysteresis (90G), but only 16V max supply | Requires external LDO for 24V systems; better suited for low-flux target geometries | Choose for high-precision crankshaft sensing where flux density is marginal and supply is regulated |
Compared with AL3723QSA-7, AH3723Q-SA-7 offers identical magnetic thresholds but Diodes' IATF16949-certified traceability; versus TLE4963-2M, it trades higher voltage tolerance (28V vs 16V) for slightly lower sensitivity, making it preferable for unregulated battery-fed modules.
Availability
AH3723Q-SA-7 is available at Aetrix Electronics and suitable for engine management systems, electric power steering modules, transmission control units, and HVAC blower motor drivers requiring stable component supply across automotive production lifecycles.
Supply support for AH3723Q-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 AH372XQ 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 AH3723Q-SA-7 in SC59 package?
The AH3723Q-SA-7 in SC59 package activates (output low) when a South pole is applied to the non-part-marking side of the package. This is reversed from SOT23 and SIP-3 variants, which require South pole on the marked side. The polarity is fixed per package type and cannot be reconfigured.
Does AH3723Q-SA-7 require an external bypass capacitor?
Yes - a 10nF to 100nF ceramic capacitor (CIN) between VDD and GND is mandatory per the datasheet to stabilize the internal regulator and improve RF noise immunity. Omitting it risks erratic switching behavior under electromagnetic interference common in automotive harnesses.
Can AH3723Q-SA-7 operate reliably at 28V continuous supply?
No - while the device supports 28V nominal operation, its absolute maximum VDD rating is 32V transient only. Continuous operation above 24V increases self-heating and accelerates parametric shift; Diodes recommends derating to ≤24V for sustained 150°C ambient use.
How does the chopper stabilization affect timing accuracy in camshaft sensing?
Chopper stabilization reduces BOP/BRP drift to <±0.5G/°C, limiting cam angle error to <0.3° over -40°C to +150°C. This ensures consistent ignition timing window positioning across thermal transients, critical for meeting Euro 7 emissions compliance in modern powertrains.
AH3723Q-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:
- Latch, Bipolar Switch
- Technology:
- Hall Effect
- Polarization:
- North Pole, South Pole
- Sensing Range:
- ±6mT Trip, ±0.5mT Release
- Test Condition:
- 25°C
- Voltage - Supply:
- 2.2V ~ 20V
- Current - Supply (Max):
- 4mA
- Current - Output (Max):
- 25mA
- Output Type:
- Digital
- Features:
- Temperature Compensated
- Operating Temperature:
- -40°C ~ 150°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-3
AH3723Q-SA-7 FAQ
1.How can I place an order for AH3723Q-SA-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for AH3723Q-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 AH3723Q-SA-7 reliable?
The price and inventory of AH3723Q-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 AH3723Q-SA-7 is usually 5 days.
3.What payment methods are accepted for AH3723Q-SA-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AH3723Q-SA-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AH3723Q-SA-7?
AH3723Q-SA-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AH3723Q-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 AH3723Q-SA-7?
For technical support, including AH3723Q-SA-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AH3723Q-SA-7 requirements.
6.How does Aetrix verify that AH3723Q-SA-7 is sourced from the original manufacturer or authorized distributors?
All AH3723Q-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 AH3723Q-SA-7 meets industry standards.
7.What is the process for return or replacement of AH3723Q-SA-7?
All AH3723Q-SA-7 units undergo pre-shipment inspection (PSI). If there is an issue with AH3723Q-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 AH3723Q-SA-7 part is unused and in its original packaging.
Return procedure for AH3723Q-SA-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
AH3723Q-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…
