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Diodes Incorporated AH182-PG-A
- Part No.:
- AH182-PG-A
- Manufacturer:
- Diodes Incorporated
- Category:
- Switches (Solid State)
- Package:
- 3-SIP, Formed Leads
- Datasheet:
-
AH182-PG-A.pdf
- Description:
- MAGNETIC SWITCH UNIPOLAR 3SIP
- Quantity:
- Payment:
- Shipping:
Inventory:4,968
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Product details
Overview
AH182-PG-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 0.3 V max on-state voltage at 1 mA load - enabling ultra-low-power cover detection and position sensing in handheld devices.
For engineers reviewing the AH182-PG-A datasheet, AH182-PG-A pinout, AH182-PG-A application, or AH182-PG-A equivalent, key selection criteria include magnetic operate/release points, micropower consumption (<10 µA avg), SIP-3L thermal derating (550 mW @ 25°C), and polarity-specific switching behavior (south-pole-on for SIP-3L).
Technical Context
The AH182-PG-A integrates a Hall plate, chopper-stabilized amplifier, offset-cancellation circuitry, and CMOS output driver in a single die. Its bipolar latching behavior is defined by Bop = 40–60 G (south pole) and Brp = 10–30 G, yielding ≥10 G hysteresis to prevent chatter near threshold.
It operates across 2.5–5.5 V supply and –40°C to +85°C ambient, with <0.1 µA leakage off-state current and 50–100 µs wake-up time. The device uses internal regulation and requires no external capacitors for basic operation, though 10–100 nF bypassing is recommended for noise immunity.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage | 2.5 V to 5.5 V - supports single-cell Li-ion or dual-cell alkaline battery systems without regulation. |
| Avg. Supply Current | 5 µA (typ), 10 µA (max) - enables multi-year operation in coin-cell–powered cover detectors. |
| Output Type | Open-drain NMOS - requires external pull-up; sinks up to 10 mA for direct LED or MCU GPIO interfacing. |
| Magnetic Sensitivity | Bop: 40–60 G (south pole, brand side); Brp: 10–30 G - ensures reliable actuation with small neodymium magnets at air gaps ≤2 mm. |
| Operating Temp | –40°C to +85°C - qualified for consumer and industrial portable equipment environments. |
| Power Dissipation | 550 mW (SIP-3L, 25°C) - derates linearly to 0 mW at +150°C junction; supports high-reliability PCB layouts. |
Pinout & Package
AH182-PG-A is housed in a lead-free, RoHS-compliant SIP-3L package (3-pin single-inline, spread-lead, green molding compound). Dimensions: 2.00 × 1.15 × 0.51 mm (L × W × H), branded surface facing up.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Vdd | Positive power supply input - must be decoupled locally; tolerates 7 V absolute max. |
| 2 | GND | Ground reference - connects to system common; critical for stable Hall plate biasing. |
| 3 | Output | Open-drain output - active-low; sinks current when magnet field exceeds Bop; floats when inactive. |
Key Features
| Feature | Design Value |
|---|---|
| Micropower Operation | 5 µA typical average current enables >5-year battery life in low-duty-cycle cover-sense applications. |
| Offset-Canceling Technology | Chopper-stabilized architecture eliminates thermal drift and process-induced offset, ensuring stable Bop/Brp over temperature. |
| Superior Temperature Stability | Switch-point drift <±10% over –40°C to +85°C - avoids recalibration in uncontrolled environments. |
| Stress-Insensitive Packaging | SIP-3L mold compound and leadframe design minimize sensitivity to PCB warpage or mechanical stress-induced false triggers. |
Applications
| Cover Detection | Speed Measurement |
|---|---|
|
Use Scenario: Detect flip cover closure on smartphones or tablet keyboards using a small magnet embedded in the lid. IC Role / Device Role / Timing Role: Hall-effect switch providing digital presence signal to system controller upon magnetic field exposure. Use Value: Consumes only 5 µA avg current during monitoring - extends standby battery life without compromising responsiveness. |
Use Scenario: Count rotation pulses from a gear tooth or fan blade passing near a fixed magnet and sensor. IC Role / Device Role / Timing Role: Edge-triggered magnetic event detector generating clean logic-level pulses synchronized to mechanical motion. Use Value: 50–100 µs wake-up time and ≥10 G hysteresis ensure accurate pulse capture at speeds up to 1200 RPM with minimal missed events. |
| Home Safety Sensor | Portable Device Position Sensing |
|
Use Scenario: Monitor door/window opening in smart home security systems using surface-mounted magnet and sensor pair. IC Role / Device Role / Timing Role: Low-power magnetic proximity detector reporting intrusion via wired or wireless alarm interface. Use Value: –40°C to +85°C operating range and <0.1 µA off-state leakage support outdoor-rated enclosures with long-term reliability. |
Use Scenario: Sense stylus docking or accessory attachment in digital pens or modular peripherals. IC Role / Device Role / Timing Role: Compact, polarity-aware Hall switch confirming physical mating alignment before enabling communication or charging. Use Value: SIP-3L footprint (2.0 × 1.15 mm) fits tight spaces; south-pole activation simplifies magnet orientation during assembly. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Hall-effect switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AL33015-S12T | Higher Idd(avg) (15 µA typ), wider Bop range (30–90 G), SC59-only packaging | Less suitable for ultra-low-power coin-cell designs; better for noisy industrial environments requiring higher magnetic margin | Select when robustness to field variation outweighs micropower priority |
| US1881EUA-AAA-000 | Unipolar operation (south-pole only), 12 µA avg current, SOT-23 package | Lacks bipolar hysteresis - prone to chatter near threshold; not drop-in for AH182's latching behavior | Choose only if application requires strict unipolar response and can tolerate higher current draw |
Compared with AL33015-S12T and US1881EUA-AAA-000, AH182-PG-A delivers the lowest quiescent current and unique south-pole–activated latching in SIP-3L - making it optimal for space-constrained, multi-year battery applications where magnetic stability and polarity control are critical.
Availability
AH182-PG-A is available at Aetrix Electronics and suitable for cover detection, speed measurement, home safety sensors, and portable device position sensing requiring stable component supply despite its obsolete status - inventory is secured for legacy design support and production continuity.
Supply support for AH182-PG-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, specializing in power management, signal integrity, and sensor solutions for consumer, industrial, and automotive markets.
AH182-PG-A belongs to Diodes' micropower Hall-effect switch product line, engineered specifically for energy-constrained portable electronics requiring reliable, low-cost magnetic sensing with minimal board space and power budget.
FAQ
Is AH182-PG-A still in active production?
No - AH182/AH183 were officially discontinued by Diodes Incorporated as of August 2022 (DS31024 Rev. 10-4). However, Aetrix Electronics maintains secured legacy inventory with full traceability and offers extended supply support for ongoing production needs.
What is the magnetic polarity requirement for AH182-PG-A activation?
AH182-PG-A activates with the south pole of a magnet applied to the branded (top) surface of the SIP-3L package. North-pole activation is not functional - this polarity specificity is fixed per package type and cannot be reversed via configuration.
Can AH182-PG-A drive an LED directly?
Yes - its open-drain output can sink up to 10 mA, sufficient to drive standard indicator LEDs with appropriate series resistance. At 3V supply and 1 mA load, VOUT(ON) is ≤0.3 V, leaving ≥2.7 V across the LED/resistor network.
Does AH182-PG-A require an external capacitor?
No - the device operates stably without external capacitance. However, a 10–100 nF ceramic capacitor between Vdd and GND is recommended to improve noise immunity in electrically noisy environments such as motor-driven handheld tools or proximity to RF circuits.
AH182-PG-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-PG-A FAQ
1.How can I place an order for AH182-PG-A through Aetrix?
Please submit a Request for Quotation (RFQ) for AH182-PG-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-PG-A reliable?
The price and inventory of AH182-PG-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-PG-A is usually 5 days.
3.What payment methods are accepted for AH182-PG-A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AH182-PG-A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AH182-PG-A?
AH182-PG-A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AH182-PG-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-PG-A?
For technical support, including AH182-PG-A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AH182-PG-A requirements.
6.How does Aetrix verify that AH182-PG-A is sourced from the original manufacturer or authorized distributors?
All AH182-PG-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-PG-A meets industry standards.
7.What is the process for return or replacement of AH182-PG-A?
All AH182-PG-A units undergo pre-shipment inspection (PSI). If there is an issue with AH182-PG-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-PG-A part is unused and in its original packaging.
Return procedure for AH182-PG-A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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