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Diodes Incorporated AH183-WG-7
- Part No.:
- AH183-WG-7
- Manufacturer:
- Diodes Incorporated
- Category:
- Switches (Solid State)
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
AH183-WG-7.pdf
- Description:
- MAGNETIC SWITCH UNIPOLAR SC59
- Quantity:
- Payment:
- Shipping:
Inventory:1,215
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Product details
Overview
AH183-WG-7 from Diodes Incorporated is a micropower, bipolar-operated Hall-effect switch in SC59 (SOT23) package, designed for battery-powered handheld devices. It activates on north-pole magnetic field exposure, delivers 0.1V typical output-on voltage at 1mA load, consumes 280–500µA average supply current, and operates across –40°C to +85°C for cover detection and speed-sensing applications.
For engineers reviewing the AH183-WG-7 datasheet, AH183-WG-7 pinout, AH183-WG-7 application, or AH183-WG-7 equivalent, key selection criteria include magnetic polarity response (north-activated), ultra-low quiescent power, SC59 thermal derating profile, and Bop/Brp hysteresis of 40–60G / 10–30G at 3V.
Technical Context
The AH183-WG-7 integrates a Hall plate, chopper-stabilized amplifier, offset-cancellation circuitry, and open-drain NMOS output driver. Its internal architecture enables stable switching despite mechanical stress and temperature drift, with hysteresis (Bhy ≥10G) preventing chatter near threshold.
It operates in a fixed duty-cycle mode (25% typical) with 200–400ms period and 50–100µs wake-up time. Magnetic sensitivity is calibrated for north-pole activation in SC59 orientation, differing from the south-pole activation of the SIP-3L variant AH182/AH183-PL-x.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage | 2.5V–5.5V - supports single-cell Li-ion or dual-cell alkaline battery systems without regulation. |
| Avg. Supply Current | 280–500µA - enables multi-year operation in low-duty-cycle cover-detect applications. |
| Output On Voltage | ≤0.3V @ 1mA - ensures strong logic-low assertion into standard CMOS inputs with minimal voltage drop. |
| Operation Point (Bop) | 40–60 Gauss (south pole not active; north pole triggers) - defines reliable turn-on threshold under real-world air-gap conditions. |
| Hysteresis (Bhy) | ≥10 Gauss - prevents oscillation during slow magnetic field transitions near switching point. |
| Operating Temp. | –40°C to +85°C - validated for consumer portable equipment environments, not automotive-grade. |
| Power Dissipation | 230mW @ 25°C (SC59), derates linearly to 0mW at +150°C - constrains PCB copper area and thermal relief design. |
Pinout & Package
AH183-WG-7 is housed in SC59 package (JEDEC TO-236AB), identical to SOT-23 in footprint and lead pitch (1.9mm × 1.3mm × 1.0mm height). Pin 1 = Vdd, Pin 2 = GND, Pin 3 = Open-drain Output - top-view orientation matches standard SOT-23 marking convention with brand-side identification "K3".
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Vdd) | Power Supply Input | Accepts 2.5–5.5V; internal regulator supplies bias to Hall sensor and logic; decoupling capacitor (10–100nF) required. |
| 2 (GND) | Ground Reference | Common return path for Hall plate, amplifier, and output driver; must be low-impedance to minimize noise coupling. |
| 3 (Output) | Open-Drain NMOS Output | Sinks up to 10mA; requires external pull-up (10–100kΩ); asserts logic-low when north pole exceeds Bop. |
Key Features
| Feature | Design Value |
|---|---|
| Micropower Operation | 280–500µA avg. current enables >2-year battery life in intermittent-sense applications like clamshell phone lids. |
| Offset-Canceling Technology | Chopper stabilization eliminates thermal and process-induced DC offsets, ensuring consistent Bop/Brp over temperature. |
| North-Pole Activation (SC59) | Configured for north-pole magnetic field response - simplifies mechanical assembly where magnet polarity is fixed by housing design. |
| Superior Temperature Stability | Bop drift <±10% over –40°C to +85°C - maintains reliable switching without recalibration in consumer ambient ranges. |
| Green Packaging | Lead-free, halogen- and antimony-free SC59 package compliant with RoHS 3 (2015/863/EU) and JEDEC standards. |
Applications
| Clamshell Cover Detection | Rotary Speed Sensing |
|---|---|
Use Scenario: Detect open/closed state of flip-style mobile phone or tablet covers using embedded magnet and PCB-mounted sensor. IC Role / Device Role / Timing Role: Hall-effect switch providing digital lid-status signal to baseband processor via GPIO interrupt. Use Value: 280–500µA avg. current extends standby battery life; north-pole activation aligns with common hinge-magnet orientation. |
Use Scenario: Measure rotational speed of small fans or motorized toys by counting gear-tooth or magnet-pass events. IC Role / Device Role / Timing Role: Edge-triggered magnetic event detector feeding pulse train to microcontroller timer input. Use Value: 50–100µs wake-up time supports ≥100Hz sampling; 10G hysteresis rejects vibration-induced false triggers. |
| Home Appliance Safety Interlock | Portable Medical Device Lid Monitoring |
Use Scenario: Confirm washing machine door or microwave oven cavity closure before enabling high-power operation. IC Role / Device Role / Timing Role: Fail-safe proximity switch interfaced with system controller to block hazardous function activation. Use Value: –40°C to +85°C rating covers appliance thermal environments; open-drain output allows wired-OR fault signaling. |
Use Scenario: Monitor battery compartment or diagnostic port cover on handheld glucose meters or pulse oximeters. IC Role / Device Role / Timing Role: Low-power status indicator that wakes host MCU only upon cover removal for data upload or calibration. Use Value: 15µW total operating power (at 2.75V) minimizes impact on medical device battery budget. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Hall-effect switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AL33030QRTT-7 | Automotive-grade (AEC-Q100 Grade 2), 3.0–5.5V supply, 1.2mA avg. current, south-pole activation. | Qualified for under-hood automotive use; higher power draw limits battery-life suitability. | Select when AEC-Q100 compliance and extended temperature (–40°C to +125°C) are mandatory. |
| US1881EUA-AAA-0000 | Unipolar, 2.5–24V supply, 3.5mA avg. current, TO-92 package, no hysteresis spec. | Broader voltage range but lacks guaranteed hysteresis and micropower optimization. | Choose for industrial panel-mount designs where voltage flexibility outweighs battery runtime needs. |
Compared with AL33030QRTT-7 and US1881EUA-AAA-0000, AH183-WG-7 uniquely balances nanowatt-level average power, SC59 space efficiency, and north-pole magnetic response - making it optimal for compact, long-life consumer electronics where automotive qualification or wide-Vdd operation are unnecessary.
Availability
AH183-WG-7 is available at Aetrix Electronics and suitable for clamshell cover detection, rotary speed sensing, home appliance safety interlocks, and portable medical device lid monitoring requiring stable component supply and RoHS-compliant green packaging.
Supply support for AH183-WG-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 manufacturer of discrete semiconductors and analog ICs, headquartered in Plano, Texas, with design, manufacturing, and sales operations across Asia, Europe, and the Americas.
AH183-WG-7 belongs to Diodes' Hall-effect switch product line, engineered specifically for ultra-low-power, cost-sensitive consumer electronics requiring reliable magnetic presence detection in space-constrained form factors.
FAQ
Is AH183-WG-7 still in production?
No - AH183-WG-7 is officially obsolete per Diodes' DS31024 Rev. 10 (August 2022). Aetrix Electronics holds remaining authorized inventory and provides last-time-buy support, including full traceability and documentation. No new wafer starts are planned.
What is the magnetic polarity requirement for AH183-WG-7 activation?
AH183-WG-7 in SC59 package activates with a north pole applied to the branded (marking) side. This is confirmed in the datasheet's magnetic characteristics table and functional block diagram - opposite to the SIP-3L variant, which responds to south poles.
Can AH183-WG-7 drive an LED directly?
No - AH183-WG-7's open-drain output sinks only up to 10mA with ≤0.3V saturation voltage. Driving even a low-current LED (e.g., 2mA @ 1.8V) would require a series resistor and external Vdd; it is intended for logic-level interfacing, not direct load driving.
Does AH183-WG-7 require an external pull-up resistor?
Yes - the output is open-drain NMOS. A pull-up resistor (10kΩ–100kΩ) between Vdd and Pin 3 is mandatory to establish a valid high-state voltage. Without it, the output floats and cannot assert a logic-high signal to downstream logic or microcontrollers.
AH183-WG-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:
- Obsolete
- Function:
- Unipolar Switch
- Technology:
- Hall Effect
- Polarization:
- North Pole
- Sensing Range:
- -6mT Trip, 1mT Release
- Test Condition:
- 25°C
- Voltage - Supply:
- 2.5V ~ 5.5V
- Current - Supply (Max):
- 500µA
- Current - Output (Max):
- 10mA
- Output Type:
- Open Drain
- Features:
- -
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SC-59-3
AH183-WG-7 FAQ
1.How can I place an order for AH183-WG-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for AH183-WG-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 AH183-WG-7 reliable?
The price and inventory of AH183-WG-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AH183-WG-7 is usually 5 days.
3.What payment methods are accepted for AH183-WG-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AH183-WG-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AH183-WG-7?
AH183-WG-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AH183-WG-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 AH183-WG-7?
For technical support, including AH183-WG-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AH183-WG-7 requirements.
6.How does Aetrix verify that AH183-WG-7 is sourced from the original manufacturer or authorized distributors?
All AH183-WG-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 AH183-WG-7 meets industry standards.
7.What is the process for return or replacement of AH183-WG-7?
All AH183-WG-7 units undergo pre-shipment inspection (PSI). If there is an issue with AH183-WG-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 AH183-WG-7 part is unused and in its original packaging.
Return procedure for AH183-WG-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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