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Diodes Incorporated AH1383-HK4-7
- Part No.:
- AH1383-HK4-7
- Manufacturer:
- Diodes Incorporated
- Category:
- Switches (Solid State)
- Package:
- -
- Datasheet:
-
AH1383-HK4-7.pdf
- Description:
- HALL UNIPOLAR SWITCH X2-DFN1410
- Quantity:
- Payment:
- Shipping:
Inventory:4,000
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Product details
Overview
AH1383-HK4-7 from Diodes Incorporated is a high-sensitivity, ultra-low-power digital unipolar Hall-effect switch IC designed for magnetic position sensing in battery-constrained systems. It operates with 1.6V–5.5V supply, draws only 1.6μA average current at 3V, and switches on with south-pole magnetic fields ≥35G (typ.) at +25°C - used in smart meter lid detection, IoT device cover sensing, and smoke detector door status monitoring.
For engineers reviewing the AH1383-HK4-7 datasheet, AH1383-HK4-7 pinout, AH1383-HK4-7 application, or AH1383-HK4-7 equivalent, key selection criteria include its 45G typical operate point, 35G release point, hysteresis of 10G, SOT23/X2-DFN1410-4 package options, and compatibility with low-voltage microcontrollers in energy-harvesting and portable safety-critical designs.
Technical Context
The AH1383-HK4-7 implements a chopper-stabilized Hall sensor with hibernating clocking architecture to achieve 1.6μA average supply current. Its internal latch and output driver deliver open-drain logic-level switching without external pull-up resistors.
It features temperature-compensated magnetic thresholds (BOPS = 25–60G, BRPS = 20–55G over –40°C to +85°C) and integrates ESD protection rated at 8kV HBM. The device activates only upon sufficient south-pole flux density perpendicular to the package marking side.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage | 1.6V to 5.5V - supports coin-cell and Li-ion battery operation without level-shifting. |
| Average Supply Current | 1.6μA at 3V - enables >10-year battery life in always-on sensing applications. |
| Operate Point (BOPS) | 35G (typ.) at +25°C - optimized for reliable activation with small magnets at air gaps up to 3mm. |
| Release Point (BRPS) | 35G (typ.) at +25°C - provides 10G hysteresis to prevent chatter near threshold. |
| Output Type | Open-drain, sink-only - simplifies interface with 1.8V/3.3V/5V MCUs and eliminates need for external pull-up. |
| ESD Rating | 8kV HBM - reduces system-level transient protection component count. |
| Operating Temperature | –40°C to +85°C - qualified for indoor industrial and consumer environments. |
Pinout & Package
Package: X2-DFN1410-4 (Type B), 1.4mm × 1.0mm × 0.37mm, exposed thermal pad (no internal connection).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | VDD | Power supply input - accepts 1.6V–5.5V; requires 100nF decoupling capacitor placed adjacent to pin. |
| 2 | GND | Ground reference - must be connected to PCB ground plane for stable operation and EMI immunity. |
| 3 | NC | No internal connection - may be left floating or tied to GND for mechanical stability; no electrical function. |
| 4 | OUTPUT | Open-drain output - sinks up to 1mA; pulled low when B ≥ BOPS, high-impedance otherwise. |
Key Features
| Feature | Design Value |
|---|---|
| Chopper-stabilized architecture | Reduces offset drift to <±0.5G/°C, enabling stable switching across –40°C to +85°C without calibration. |
| Hibernating clocking system | Switches internal oscillator on only during sampling, achieving 1.6μA average current at 3V. |
| Unipolar south-pole activation | Eliminates need for bipolar magnet orientation control in mechanical assemblies like flip covers and sliding trays. |
| No external pull-up required | Simplifies BOM and layout - compatible with 1.8V I/O domains without level translators. |
| RF noise immunity | Validated against common 900MHz/2.4GHz interference sources - avoids false triggers in wireless-enabled devices. |
Applications
| Smart Meter Lid Detection | IoT Device Cover Sensing |
|---|---|
|
Use Scenario: Detect opening/closing of utility gas/water meter enclosures for tamper logging and remote reporting. IC Role / Device Role / Timing Role: Unipolar Hall switch providing latched ON/OFF state based on magnet proximity during lid motion. Use Value: Ultra-low 1.6μA average current extends battery life beyond 10 years; 45G operate point ensures reliable actuation with compact magnets even after thermal aging. |
Use Scenario: Sense lid open/close state in battery-powered asset trackers or environmental sensors deployed in field locations. IC Role / Device Role / Timing Role: Magnetic presence detector triggering MCU wake-up and BLE transmission only on state change. Use Value: Eliminates continuous polling; hysteresis prevents bounce-induced spurious wake-ups; 8kV ESD withstands handling and installation transients. |
| Smoke Detector Door Status | Home Appliance Tray Position |
|
Use Scenario: Monitor battery compartment or test-button access panel position in UL-certified smoke alarms. IC Role / Device Role / Timing Role: Safety-critical position indicator that asserts low signal when panel is removed for battery replacement. Use Value: Guaranteed operation down to 1.6V ensures functionality during end-of-battery-life conditions; –40°C to +85°C range covers garage and attic installations. |
Use Scenario: Detect drawer or detergent tray insertion in washing machines and dishwashers for cycle enablement and error prevention. IC Role / Device Role / Timing Role: Proximity switch confirming mechanical alignment before motor activation or water fill. Use Value: Small X2-DFN1410-4 footprint fits tight spaces behind plastic housings; chopper stabilization maintains accuracy despite vibration and thermal cycling. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar unipolar Hall-effect switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AL33030E-7 | Higher 5.5V max VDD but 3.5μA avg current; 30G BOPS (typ.); SOT23-3 only. | Lacks DFN option; less suitable for space-constrained IoT nodes requiring sub-2μA sleep. | Prefer AH1383-HK4-7 when board area and battery life are critical; AL33030E-7 better for legacy SOT23 layouts. |
| TMAG5170AHQDBVR | 3-axis linear Hall sensor with SPI interface; 12-bit output; 120μA active current. | Provides analog field strength data, not digital switching; requires MCU firmware support. | Select AH1383-HK4-7 for simple ON/OFF detection; TMAG5170 for multi-axis position tracking or diagnostics. |
Compared with AL33030E-7 and TMAG5170AHQDBVR, the AH1383-HK4-7 uniquely balances ultra-low power (1.6μA), high sensitivity (45G), and miniature DFN packaging - making it optimal for cost-sensitive, long-life, space-constrained magnetic switch applications where digital latching suffices.
Availability
AH1383-HK4-7 is available at Aetrix Electronics and suitable for smart meters, IoT edge sensors, and smoke detectors requiring stable component supply, long-term lifecycle assurance, and RoHS-compliant sourcing.
Supply support for AH1383-HK4-7 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 power management, signal integrity, and sensing applications.
The AH138x series belongs to Diodes' Hall-effect switch product line, engineered specifically for ultra-low-power magnetic position detection in battery-operated consumer, industrial, and safety-critical systems.
FAQ
What is the magnetic polarity requirement for AH1383-HK4-7 activation?
The AH1383-HK4-7 activates exclusively with the south pole of a magnet oriented toward the marked side of the package. North-pole exposure produces no output change. The specified operate point (BOPS = 35G typ.) and release point (BRPS = 35G typ.) are both defined for south-pole flux perpendicular to the top surface.
Does AH1383-HK4-7 require an external pull-up resistor?
No. The AH1383-HK4-7 features an integrated open-drain output stage capable of sinking 1mA, eliminating the need for external pull-up resistors. It interfaces directly with 1.8V, 3.3V, or 5V logic inputs, reducing component count and PCB area.
How does the hibernating clocking system reduce power consumption?
The hibernating clocking system powers the internal oscillator only during brief sampling intervals (awake time = 45μs typ.), then shuts down all non-essential circuitry. This duty-cycled operation achieves 1.6μA average current at 3V, compared to >100μA for continuously clocked Hall switches.
Can AH1383-HK4-7 be used in automotive interior applications?
The AH1383-HK4-7 is not AEC-Q100 qualified and is specified for –40°C to +85°C operation. While it functions within passenger cabin temperature ranges, Diodes recommends contacting their automotive team for AEC-Q100-qualified alternatives (e.g., AH189x series) if compliance with automotive change control, PPAP, or IATF 16949 is required.
AH1383-HK4-7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Function:
- Latch, Unipolar Switch
- Technology:
- Hall Effect
- Polarization:
- South Pole
- Sensing Range:
- 6mT Trip, 2mT Release
- Test Condition:
- -40°C ~ 85°C
- Voltage - Supply:
- 1.6V ~ 5.5V
- Current - Supply (Max):
- 9µA
- Current - Output (Max):
- 1mA
- Output Type:
- Digital
- Features:
- -
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- -
AH1383-HK4-7 FAQ
1.How can I place an order for AH1383-HK4-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for AH1383-HK4-7 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 AH1383-HK4-7 reliable?
The price and inventory of AH1383-HK4-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AH1383-HK4-7 is usually 5 days.
3.What payment methods are accepted for AH1383-HK4-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AH1383-HK4-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AH1383-HK4-7?
AH1383-HK4-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AH1383-HK4-7 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 AH1383-HK4-7?
For technical support, including AH1383-HK4-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AH1383-HK4-7 requirements.
6.How does Aetrix verify that AH1383-HK4-7 is sourced from the original manufacturer or authorized distributors?
All AH1383-HK4-7 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 AH1383-HK4-7 meets industry standards.
7.What is the process for return or replacement of AH1383-HK4-7?
All AH1383-HK4-7 units undergo pre-shipment inspection (PSI). If there is an issue with AH1383-HK4-7, 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 AH1383-HK4-7 part is unused and in its original packaging.
Return procedure for AH1383-HK4-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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