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Diodes Incorporated AH183-WL-7
- Part No.:
- AH183-WL-7
- Manufacturer:
- Diodes Incorporated
- Category:
- Switches (Solid State)
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
AH183-WL-7.pdf
- Description:
- MAGNETIC SWITCH UNIPOLAR SC59-3
- Quantity:
- Payment:
- Shipping:
Inventory:4,119
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Product details
Overview
AH183-WL-7 from Diodes Incorporated is a micropower, bipolar-operated Hall effect switch in SC59 (SOT23) package, designed for battery-powered portable electronics. It features 2.5–5.5V operation, 280–500 µA average supply current, magnetic operate point of 40–60 Gauss (south pole activation), and open-drain output with 0.1–0.3V on-state voltage at 1mA - deployed in clamshell cover detection and speed sensing.
For engineers reviewing the AH183-WL-7 datasheet, AH183-WL-7 pinout, AH183-WL-7 application, or AH183-WL-7 equivalent, key selection criteria include magnetic polarity sensitivity (SC59 activates on north pole), ultra-low power consumption versus AH182, thermal stability across –40°C to +85°C, and RoHS-compliant "Green" packaging.
Technical Context
The AH183-WL-7 integrates a Hall plate, chopper-stabilized amplifier, offset-canceling circuitry, and CMOS output driver in a single die. Its bipolar latching behavior requires opposite magnetic poles for turn-on (north for SC59) and turn-off, with hysteresis of ≥10 Gauss to prevent chatter near switching thresholds.
It operates in a pulsed duty cycle mode: typical period is 200–400 ms with ~25% DC duty cycle, enabling low average current draw. The device uses internal regulation to maintain stable performance across 2.5–5.5V supply and exhibits <0.1 µA leakage current when inactive.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage | 2.5–5.5V - supports single-cell Li-ion and dual-cell alkaline battery systems without external regulation. |
| Avg. Supply Current | 280–500 µA - enables multi-year operation in low-duty-cycle cover-detect applications. |
| Magnetic Bop (SC59) | 40–60 Gauss (north pole) - ensures reliable actuation with small, low-cost magnets at air gaps up to 3 mm. |
| Output Type | Open-drain CMOS - allows flexible pull-up to any logic rail (e.g., 1.8V/3.3V/5V) and wired-OR interfacing. |
| Operating Temp | –40°C to +85°C - validated for consumer handhelds and industrial enclosures without derating. |
| Hysteresis (Bhy) | ≥10 Gauss - prevents false toggling due to mechanical vibration or magnetic noise near threshold. |
| Output On-Voltage | ≤0.3V @ 1mA - guarantees solid logic-low level into standard CMOS/TTL inputs with margin. |
Pinout & Package
Package: SC59 (standard SOT23-3 footprint, 2.90 × 1.30 × 1.00 mm, lead-free, halogen-free "Green" molding compound).
| 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 - no external decoupling required beyond 10–100nF. |
| 2 (GND) | Ground reference | Common return for Hall plate, amplifier, and output driver - must be low-impedance to minimize magnetic offset drift. |
| 3 (Output) | Open-drain output | Sinks up to 10mA; requires external pull-up; active-low signal asserts when magnetic field exceeds Bop (north pole for SC59). |
Key Features
| Feature | Design Value |
|---|---|
| Micropower pulsed operation | 25% duty cycle with 200–400 ms period reduces average current to sub-milliwatt level for battery longevity. |
| Offset-canceling chopper architecture | Eliminates thermal and process-induced drift - maintains consistent Bop/Brp across temperature and lifetime. |
| Bipolar magnetic sensitivity (SC59) | North-pole activation enables use with magnet orientation that avoids interference from nearby ferrous components. |
| Robust ESD & stress immunity | Qualified to >4kV HBM ESD and insensitive to PCB bending or thermal cycling - suitable for high-volume assembly. |
| "Green" RoHS-compliant packaging | Lead-free, halogen-free, antimony-free SC59 package meets EU RoHS 3 and JEDEC MSL-1 standards. |
Applications
| Clamshell Cover Detection | Rotary Speed Sensing |
|---|---|
Use Scenario: Detect open/closed state of flip phone or tablet lid using embedded magnet and PCB-mounted sensor. IC Role / Device Role / Timing Role: Hall switch provides digital presence signal to system MCU; wake-up interrupt source with <100 µs response time. Use Value: 280–500 µA avg. current extends battery life vs. always-on solutions; north-pole activation simplifies magnet placement on hinge side. |
Use Scenario: Measure rotation speed of small DC motor or fan shaft via magnet-embedded rotor and fixed sensor. IC Role / Device Role / Timing Role: Edge-triggered magnetic pulse generator feeding timer/counter peripheral; 200–400 ms period sets minimum measurable RPM. Use Value: Built-in hysteresis rejects vibration noise; open-drain output interfaces directly to 3.3V microcontroller GPIO without level-shifting. |
| Home Appliance Safety Interlock | Industrial Panel Door Monitoring |
Use Scenario: Confirm closure of microwave oven or washing machine door before enabling high-power subsystems. IC Role / Device Role / Timing Role: Fail-safe position sensor with redundant mechanical linkage; output drives enable logic or safety relay driver. Use Value: –40°C to +85°C rating covers ambient extremes; <0.1 µA leakage ensures zero standby drain during long idle periods. |
Use Scenario: Monitor access door status on programmable logic controller (PLC) enclosure or HMI panel. IC Role / Device Role / Timing Role: Industrial-grade proximity indicator feeding discrete I/O module; compatible with 24V PLC logic via pull-up resistor. Use Value: SC59 package fits dense control board layouts; green RoHS compliance satisfies CE and export regulatory requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Hall effect switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AL33030-27D | Unipolar, 3.0–24V supply, 1.5mA avg. current, TO-92 package | Higher power, wider voltage range, but lacks micropower optimization for battery use | Select when interfacing with 12/24V industrial controls and where battery life is not critical |
| DRV5013A2QLPGM | Bipolar, 2.7–38V, 2.7mA avg. current, 3-pin SOT-23, integrated protection | Higher drive strength and fault reporting, but 5.4× higher current than AH183 | Choose for automotive-grade robustness and diagnostic capability where power budget allows |
Compared with AL33030-27D and DRV5013A2QLPGM, AH183-WL-7 delivers the lowest quiescent power in SC59 format for consumer portables, trading off wide-voltage flexibility and diagnostics for multi-year battery operation in space-constrained designs.
Availability
AH183-WL-7 is available at Aetrix Electronics and suitable for clamshell cover detection, rotary speed sensing, home appliance safety interlocks, and industrial panel door monitoring requiring stable component supply and RoHS-compliant sourcing.
Supply support for AH183-WL-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-WL-7 belongs to Diodes' CMOS Hall-effect switch product line, engineered specifically for ultra-low-power, cost-sensitive position and proximity sensing in portable and consumer electronics.
FAQ
What magnetic polarity activates the AH183-WL-7 in SC59 package?
The AH183-WL-7 in SC59 package activates (output goes low) when exposed to a sufficiently strong north pole - unlike the SIP-3L variant, which responds to south pole. This polarity assignment is fixed per package type and cannot be reversed by configuration.
Can AH183-WL-7 replace AH182-WL-7 in an existing design?
No direct replacement: AH183 draws 280–500 µA average current versus AH182's 5–10 µA, resulting in ~50× higher power consumption. Swapping requires re-evaluation of battery life, thermal budget, and wake-up timing - AH182 remains preferred for multi-year coin-cell applications.
Is AH183-WL-7 qualified for automotive applications?
No - AH183-WL-7 is not AEC-Q100 qualified and is specified only for commercial temperature range (–40°C to +85°C). Diodes offers separate AEC-Q100-qualified Hall switches (e.g., AH336x series) for automotive use cases requiring PPAP and IATF 16949 compliance.
What is the recommended pull-up resistor value for the open-drain output?
Diodes recommends a 10 kΩ to 100 kΩ pull-up resistor, with 50 kΩ cited in the test circuit. Lower values improve rise time and noise immunity but increase static current; higher values reduce power but risk marginal timing margins with fast MCU inputs.
AH183-WL-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-WL-7 FAQ
1.How can I place an order for AH183-WL-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for AH183-WL-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-WL-7 reliable?
The price and inventory of AH183-WL-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-WL-7 is usually 5 days.
3.What payment methods are accepted for AH183-WL-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AH183-WL-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AH183-WL-7?
AH183-WL-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AH183-WL-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-WL-7?
For technical support, including AH183-WL-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AH183-WL-7 requirements.
6.How does Aetrix verify that AH183-WL-7 is sourced from the original manufacturer or authorized distributors?
All AH183-WL-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-WL-7 meets industry standards.
7.What is the process for return or replacement of AH183-WL-7?
All AH183-WL-7 units undergo pre-shipment inspection (PSI). If there is an issue with AH183-WL-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-WL-7 part is unused and in its original packaging.
Return procedure for AH183-WL-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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