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Diodes Incorporated AH182-PL-A
- Part No.:
- AH182-PL-A
- Manufacturer:
- Diodes Incorporated
- Category:
- Switches (Solid State)
- Package:
- 3-SIP, Formed Leads
- Datasheet:
-
AH182-PL-A.pdf
- Description:
- MAGNETIC SWITCH UNIPOLAR 3SIP
- Quantity:
- Payment:
- Shipping:
Inventory:2,847
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Product details
Overview
AH182-PL-A from Diodes Incorporated is a micropower, bipolar-operated Hall effect switch in SIP-3L package, designed for battery-powered portable electronics. It features 5 µA typical average supply current at 3V, 40–60 Gauss south-pole activation (brand-side), and open-drain output with 0.1 V max on-state voltage at 1 mA load. Used in cover detection and position sensing where ultra-low power and magnetic polarity discrimination are critical.
For engineers reviewing the AH182-PL-A datasheet, AH182-PL-A pinout, AH182-PL-A application, or AH182-PL-A equivalent, key selection criteria include magnetic operate/release points, 2.5–5.5 V operation range, SIP-3L thermal derating curve, and 15 µW total system power consumption - all validated for handheld device integration under -40°C to +85°C ambient conditions.
Technical Context
The AH182-PL-A integrates a Hall plate, chopper-stabilized amplifier, offset-canceling circuitry, and CMOS output driver in a single die. Its bipolar switching behavior is polarity-specific per package: SIP-3L activates with south pole applied to the branded surface, while SC59 requires north pole for turn-on.
It operates in a pulsed duty-cycle mode with 0.1% typical DC duty cycle and 50–100 ms period, enabling ultra-low average current draw. Hysteresis of ≥10 Gauss ensures noise-immune switching, and temperature drift of magnetic thresholds is minimized via on-chip compensation across -40°C to +85°C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Avg. Supply Current | 5–10 µA @ 3V - enables multi-year battery life in coin-cell-powered devices |
| Supply Voltage Range | 2.5–5.5 V - compatible with Li-ion, alkaline, and NiMH battery systems without regulation |
| Operate Point (Bop) | 40–60 Gauss (south pole, brand side) - defines minimum field strength for reliable turn-on |
| Release Point (Brp) | 10–30 Gauss - ensures stable off-state retention during weak or fluctuating fields |
| Output Type | Open-drain, logic-level compatible - supports flexible pull-up configuration up to 5.5 V |
| Operating Temp. | -40°C to +85°C - qualified for consumer and industrial portable equipment environments |
| Power Dissipation (SIP-3L) | 550 mW @ 25°C, derates linearly to 0 mW at +150°C - defines PCB copper area requirements |
Pinout & Package
Package: SIP-3L (Single In-line Package, 3-pin, spread-lead, green/RoHS-compliant). Dimensions: 3.00 × 1.30 × 1.15 mm (L × W × H), branded top surface, active area centered beneath pin 1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Vdd | Positive supply input - must be decoupled with 10–100 nF capacitor near pin for noise immunity |
| 2 | GND | Ground reference - low-impedance return path required for stable Hall plate biasing |
| 3 | Output | Open-drain output - sinks up to 10 mA; requires external pull-up (10–100 kΩ) to define logic-high level |
Key Features
| Feature | Design Value |
|---|---|
| Micropower Operation | 5–10 µA avg. current enables >10-year battery life in 200 µAh coin cells used in clamshell phones |
| Offset-Canceling Technology | Chopper-stabilized architecture reduces thermal drift and process variation impact on Bop/Brp |
| Polarity-Specific Activation | SIP-3L responds only to south pole on branded surface - eliminates false triggers from stray fields |
| Superior Temperature Stability | Bop drift < ±10% over -40°C to +85°C - maintains consistent mechanical gap tolerance in plastic housings |
| Green Packaging | Lead-free, halogen- and antimony-free SIP-3L - meets RoHS 3 (2015/863/EU) and JEDEC MSL-1 standards |
Applications
| Clamshell Phone Cover Detection | Smart Watch Lid Sensing |
|---|---|
Use Scenario: Detect open/closed state of flip-style mobile phone housing using magnet embedded in lid and sensor on main PCB. IC Role / Device Role / Timing Role: Hall switch provides digital position feedback to baseband processor; wake-up signal generator upon lid opening. Use Value: 5 µA avg. current extends standby time by >3× vs. legacy Hall sensors; SIP-3L footprint fits narrow hinge zones. |
Use Scenario: Sense deployment of protective cover on wearable health monitor to suspend display and conserve battery. IC Role / Device Role / Timing Role: Magnetic proximity detector triggering MCU sleep/wake transition; operates autonomously without host polling. Use Value: 0.1% duty cycle minimizes background current; 100 µs wake latency ensures responsive UX without perceptible lag. |
| Wireless Earbud Case Detection | Portable Medical Device Door Interlock |
Use Scenario: Confirm earbud presence inside charging case using magnet in earbud and AH182-PL-A on case PCB. IC Role / Device Role / Timing Role: Low-power occupancy sensor enabling charge management and Bluetooth pairing state control. Use Value: 15 µW total system power allows continuous monitoring without depleting case battery between charges. |
Use Scenario: Enforce safety interlock on battery compartment of portable glucose meter to prevent operation with exposed terminals. IC Role / Device Role / Timing Role: Fail-safe position validator disabling power path when door is unlatched or misaligned. Use Value: 10 Gauss minimum release point prevents false unlocks due to vibration or minor mechanical flex in plastic enclosure. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Hall effect switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AL33201ELTTR | Higher Idd(avg) = 25 µA; unipolar (south-only) activation; SC70-5 package | Lacks polarity discrimination; requires redesign for north/south field directionality | Select if board space permits SC70-5 and magnetic polarity is fixed and known |
| DRV5013AQLPGMQ1 | Automotive-grade AEC-Q100; 3.3–5.5 V; push-pull output; 2.5 mA Idd | Not micropower; intended for engine bay/infotainment, not portable battery systems | Choose only for automotive programs requiring PPAP and IATF 16949 traceability |
Compared with AL33201ELTTR and DRV5013AQLPGMQ1, AH182-PL-A uniquely delivers sub-10 µA average current with polarity-aware switching in SIP-3L - making it irreplaceable for long-life, space-constrained, dual-polarity sensing in consumer portables.
Availability
AH182-PL-A is available at Aetrix Electronics and suitable for clamshell phone cover detection, smart watch lid sensing, and wireless earbud case occupancy monitoring requiring stable component supply despite its obsolete status.
Supply support for AH182-PL-A 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 centers across Asia and manufacturing in Taiwan, China, and Malaysia.
AH182-PL-A belongs to Diodes' "Green" Hall-effect switch product line, engineered specifically for ultra-low-power magnetic sensing in battery-operated portable electronics - emphasizing longevity, environmental compliance, and mechanical robustness.
FAQ
Is AH182-PL-A still in production?
No - AH182-PL-A is officially obsolete per Diodes' DS31024 Rev. 10 (August 2022). Aetrix Electronics holds remaining authorized inventory and supports last-time buys with full traceability, but no new wafer starts or packaging runs are scheduled.
What is the magnetic polarity requirement for SIP-3L activation?
The AH182-PL-A in SIP-3L package activates only when a south pole is applied to the branded surface. Applying a north pole to that surface will not trigger the output; this polarity specificity is inherent to the package orientation and Hall plate layout.
Can AH182-PL-A drive an LED directly?
No - the output is open-drain with 10 mA absolute maximum sink current and 0.3 V max saturation voltage at 1 mA. Driving even a low-current LED (e.g., 2 mA) requires a series resistor and external pull-up; direct connection risks exceeding IOUT rating and thermal shutdown.
How does temperature affect Bop and Brp?
Per DS31024, Bop and Brp exhibit < ±10% variation over -40°C to +85°C. The hysteresis (Bhy ≥10 Gauss) remains stable, ensuring consistent switching margins across the full operating range without recalibration.
AH182-PL-A Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- 3-SIP, Formed Leads
- Packaging:
- Tape & Box (TB)
- Product Status:
- Obsolete
- Function:
- Unipolar Switch
- Technology:
- Hall Effect
- Polarization:
- South Pole
- Sensing Range:
- 6mT Trip, 1mT Release
- Test Condition:
- 25°C
- Voltage - Supply:
- 2.5V ~ 5.5V
- Current - Supply (Max):
- 10µA
- Current - Output (Max):
- 10mA
- Output Type:
- Open Drain
- Features:
- -
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- 3-SIP
AH182-PL-A FAQ
1.How can I place an order for AH182-PL-A through Aetrix?
Please submit a Request for Quotation (RFQ) for AH182-PL-A 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 AH182-PL-A reliable?
The price and inventory of AH182-PL-A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AH182-PL-A is usually 5 days.
3.What payment methods are accepted for AH182-PL-A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AH182-PL-A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AH182-PL-A?
AH182-PL-A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AH182-PL-A 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 AH182-PL-A?
For technical support, including AH182-PL-A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AH182-PL-A requirements.
6.How does Aetrix verify that AH182-PL-A is sourced from the original manufacturer or authorized distributors?
All AH182-PL-A 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 AH182-PL-A meets industry standards.
7.What is the process for return or replacement of AH182-PL-A?
All AH182-PL-A units undergo pre-shipment inspection (PSI). If there is an issue with AH182-PL-A, 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 AH182-PL-A part is unused and in its original packaging.
Return procedure for AH182-PL-A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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