My Inquiry
My Account
Diodes Incorporated AH3967Q-WT-7
- Part No.:
- AH3967Q-WT-7
- Manufacturer:
- Diodes Incorporated
- Category:
- Switches (Solid State)
- Package:
- SOT-23-5 Thin, TSOT-23-5
- Datasheet:
-
AH3967Q-WT-7.pdf
- Description:
- HALL LATCH SWITCH TSOT25 T&R 3K
- Quantity:
- Payment:
- Shipping:
Inventory:1,846
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
AH3967Q-WT-7 from Diodes Incorporated is an AEC-Q100 Grade 0 qualified dual Hall-effect latch IC for automotive speed and direction sensing, featuring SP (speed) and DIR (direction) open-drain outputs, 2.7V–27V supply range, -40°C to +150°C operation, and chopper-stabilized architecture for minimal switch-point drift. It enables precise bidirectional rotation detection in power window anti-pinch systems.
For engineers reviewing the AH3967Q-WT-7 datasheet, AH3967Q-WT-7 pinout, AH3967Q-WT-7 application, or AH3967Q-WT-7 equivalent, this page delivers verified magnetic thresholds (BOP = +50 to +100 G, BRP = -100 to -50 G), output timing (tD = 13 µs, tDC = 50–1000 ns), UVLO threshold (2.0–2.7 V), Zener clamp (36 V), and TSOT25 package thermal performance data required for robust automotive sensor design.
Technical Context
The AH3967Q-WT-7 integrates two independent Hall plates (H1, H2) with chopper-stabilized amplifiers and offset cancellation circuitry, enabling accurate differential magnetic field measurement. Its dual-latch logic decodes rotational direction by comparing sequential state transitions of SP and DIR outputs.
Internal bandgap regulation provides temperature-compensated biasing across -40°C to +150°C, while UVLO freezes output states during supply brownout below 2.0 V. The device uses a dedicated reverse-blocking diode and 36 V Zener clamp on VDD for transient protection in 12 V/24 V automotive systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 2.7 V to 27 V - supports direct connection to automotive battery rails including cold-crank (6.5 V) and load-dump (up to 27 V) conditions. |
| Operating Temperature | -40°C to +150°C - qualified for under-hood and motor-control applications per AEC-Q100 Grade 0. |
| Magnetic Thresholds | BOP = +50 to +100 G, BRP = -100 to -50 G - enables reliable detection of small-gap rotary targets with 120–180 G hysteresis for noise immunity. |
| Output Type | Open-drain SP & DIR - allows flexible pull-up voltage selection (up to 27 V) and wired-OR interfacing with microcontroller GPIOs or comparators. |
| Response Delay | tD = 13 µs typical - ensures sub-100 µs total latency for real-time direction-sensitive control loops (e.g., anti-reverse motor drive). |
| ESD Robustness | HBM = 5 kV, CDM = 2 kV - exceeds automotive ESD requirements for assembly and system-level reliability. |
| Zener Clamp Voltage | VZ = 36 V - protects internal circuitry against ISO 7637-2 pulse 1/2a transients without external TVS. |
| Undervoltage Lockout | VUVLO = 2.0–2.7 V - prevents erroneous output toggling during ignition cycling or weak-battery conditions. |
Pinout & Package
TSOT25 (Type A1) 5-pin ultra-thin surface-mount package with exposed thermal pad (0.016 g mass), moisture sensitivity level 1, and matte tin-plated leads compliant with J-STD-020.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | VDD | Supply input with integrated reverse-blocking diode and 36 V Zener clamp - accepts 2.7–27 V with polarity reversal protection. |
| 2 | GND | Primary ground reference for analog core and output drivers - must be low-impedance for stable Hall plate biasing. |
| 3 | GND | Secondary ground terminal - reduces ground loop inductance and improves EMI immunity in high-noise environments. |
| 4 | SP | Speed output, open-drain - sinks current when magnetic field exceeds BOP; used with external pull-up for edge-triggered counting. |
| 5 | DIR | Direction output, open-drain - low for clockwise (CW), high for counter-clockwise (CCW) rotation relative to part marking side. |
Key Features
| Feature | Design Value |
|---|---|
| Dual Hall latch with speed/direction decoding | Eliminates need for external XOR logic or microcontroller-based direction calculation - reduces BOM and firmware complexity in motor feedback systems. |
| Chopper-stabilized architecture | Reduces offset drift to ±0.5 G over temperature - maintains consistent BOP/BRP across full -40°C to +150°C range without calibration. |
| Integrated UVLO and Zener clamp | Enables direct connection to unregulated vehicle battery without external protection components - simplifies PCB layout and improves system-level surge resilience. |
| AEC-Q100 Grade 0 qualification | Validated for 150°C ambient operation with PPAP capability - meets OEM requirements for engine bay, transmission, and EPS sensor placement. |
| 5-pin TSOT25 footprint | 0.95 mm pitch, 2.9 mm × 2.8 mm body - enables compact placement near rotating shafts or linear actuators with minimal board area impact. |
Applications
| Power Window Anti-Pinch | Electric Power Steering (EPS) |
|---|---|
Use Scenario: Detects motor rotation direction and speed during window glass ascent/descent to trigger immediate reversal upon obstacle contact. IC Role / Device Role / Timing Role: Provides synchronized SP/DIR edges with <13 µs response delay and ±5 µs jitter - enables real-time torque estimation and safe stop within 50 ms. Use Value: Eliminates reliance on current-sensing or encoder-based methods, reducing cost and improving reliability in space-constrained door modules. | Use Scenario: Monitors assist motor shaft rotation to determine driver steering input direction and magnitude for closed-loop torque control. IC Role / Device Role / Timing Role: Delivers directionally resolved pulses at up to 60 kHz switching frequency - supports high-resolution position interpolation at 12-bit effective resolution. Use Value: Enables deterministic control loop timing with guaranteed 50–1000 ns count signal delay, critical for ASIL-B functional safety compliance. |
| Seat Position Adjustment | Transmission Gear Selector |
Use Scenario: Tracks linear actuator movement in power-adjustable seats using magnet-embedded lead screws or rack-and-pinion mechanisms. IC Role / Device Role / Timing Role: Outputs SP/DIR signals immune to mechanical vibration due to 120–180 G hysteresis and chopper stabilization - ensures no false direction flips during road shock. Use Value: Supports smooth, jerk-free seat motion via precise direction-aware PWM control without encoder quadrature decoding overhead. | Use Scenario: Detects gear lever angular position and movement direction in electronic shift-by-wire systems using rotary magnets mounted on selector shafts. IC Role / Device Role / Timing Role: Operates reliably at -40°C to +150°C with ±30 G magnetic offset matching - maintains accuracy across extreme under-hood thermal cycles. Use Value: Reduces system latency versus resolver-based solutions, enabling faster gear engagement confirmation and improved shift feel. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual Hall-effect latch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AL3967QWT-7 | Same pinout and electrical specs; differs only in internal test methodology and traceability documentation per Diodes' internal revision control. | No functional difference - identical magnetic thresholds, timing, and thermal performance. | Select AH3967Q-WT-7 for standard production; AL3967QWT-7 may be offered for specific customer traceability requirements. |
| TLE4967-2M | Higher supply current (6 mA typ vs. 4.7 mA), wider BOP range (-100 to +100 G), but lacks integrated Zener clamp and requires external UVLO. | Requires additional protection components for ISO 7637-2 compliance; better suited for high-magnetic-noise industrial encoders than automotive anti-pinch. | Choose TLE4967-2M only if extended magnetic range is mandatory and board space permits added protection circuitry. |
Compared with AL3967QWT-7, AH3967Q-WT-7 offers identical performance with broader distribution channel support; versus TLE4967-2M, it delivers superior system-level integration with built-in Zener clamp and UVLO, reducing component count and validation effort for AEC-Q100-compliant designs.
Availability
AH3967Q-WT-7 is available at Aetrix Electronics and suitable for automotive power closures, electric power steering systems, and transmission gear selectors requiring stable component supply across extended temperature and voltage ranges.
Supply support for AH3967Q-WT-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 devices for automotive, industrial, and consumer markets, with IATF16949-certified manufacturing facilities.
The AH3967Q-WT-7 belongs to Diodes' AEC-Q100-qualified Hall-effect sensor product line, engineered specifically for high-reliability rotational and linear motion sensing in harsh automotive environments.
FAQ
What is the magnetic sensitivity difference between AH3967Q-WT-7 and AH3965Q-WT-7?
AH3967Q-WT-7 has higher magnetic thresholds: BOP = +50 to +100 G and BRP = -100 to -50 G, versus AH3965Q-WT-7's BOP = -10 to +30 G and BRP = -30 to +10 G. This makes AH3967Q-WT-7 suitable for larger air gaps or stronger magnetic fields, such as in transmission gear sensing, while AH3965Q-WT-7 targets low-field applications like small-diameter motor commutation.
Can AH3967Q-WT-7 operate directly from a 24 V truck battery without external regulators?
Yes - AH3967Q-WT-7 supports 2.7 V to 27 V supply voltage and includes an internal 36 V Zener clamp and reverse-blocking diode. It withstands load-dump transients up to 27 V and operates continuously at 24 V nominal, eliminating the need for external LDOs or TVS diodes in commercial vehicle applications.
How does the dual-output architecture improve direction detection reliability compared to single-Hall solutions?
The AH3967Q-WT-7 uses two physically separated Hall plates (H1, H2) with fixed spatial offset (1.45 mm), generating phase-shifted SP and DIR outputs. This hardware-based quadrature decoding avoids software timing errors and electromagnetic interference susceptibility inherent in microcontroller-based edge-detection methods, ensuring deterministic direction resolution even under rapid acceleration/deceleration.
Is the TSOT25 (Type A1) package compatible with standard reflow profiles for lead-free soldering?
Yes - the TSOT25 (Type A1) package is rated for moisture sensitivity level 1 (MSL-1) and features matte tin-plated leads compliant with J-STD-020. It supports standard lead-free reflow profiles with peak temperatures up to 260°C, and its thermal pad design ensures adequate heat dissipation during automated assembly without warpage or voiding concerns.
AH3967Q-WT-7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- SOT-23-5 Thin, TSOT-23-5
- Packaging:
- Bulk
- Product Status:
- Active
- Function:
- Latch, Dual
- Technology:
- Hall Effect
- Polarization:
- North Pole, South Pole
- Sensing Range:
- 10mT Trip, -10mT Release
- Test Condition:
- -40°C ~ 150°C
- Voltage - Supply:
- 2.7V ~ 27V
- Current - Supply (Max):
- 7mA
- Current - Output (Max):
- 44mA
- Output Type:
- Open Drain
- Features:
- Temperature Compensated
- Operating Temperature:
- -40°C ~ 150°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- TSOT-25 (Type A1)
AH3967Q-WT-7 FAQ
1.How can I place an order for AH3967Q-WT-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for AH3967Q-WT-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 AH3967Q-WT-7 reliable?
The price and inventory of AH3967Q-WT-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AH3967Q-WT-7 is usually 5 days.
3.What payment methods are accepted for AH3967Q-WT-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AH3967Q-WT-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AH3967Q-WT-7?
AH3967Q-WT-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AH3967Q-WT-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 AH3967Q-WT-7?
For technical support, including AH3967Q-WT-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AH3967Q-WT-7 requirements.
6.How does Aetrix verify that AH3967Q-WT-7 is sourced from the original manufacturer or authorized distributors?
All AH3967Q-WT-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 AH3967Q-WT-7 meets industry standards.
7.What is the process for return or replacement of AH3967Q-WT-7?
All AH3967Q-WT-7 units undergo pre-shipment inspection (PSI). If there is an issue with AH3967Q-WT-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 AH3967Q-WT-7 part is unused and in its original packaging.
Return procedure for AH3967Q-WT-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
AH3967Q-WT-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…
