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Home > Products > Sensors, Transducers > Magnetic Sensors > Switches (Solid State)

Diodes Incorporated AH180-PL-B

Name: AH180-PL-B
Brand: Diodes Incorporated
SKU: AH180-PL-B
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: AH180-PL-B

Manufacturer:: Diodes Incorporated

Category:: Switches (Solid State)

Package:: 3-SIP

Datasheet:: AH180-PL-B.pdf

Description:: MAGNETIC SWITCH OMNIPOLAR 3SIP

Quantity:: RFQ Add To RFQ list

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Inventory:2,714

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Product details

Overview

AH180-PL-B from Diodes Incorporated is a micropower omnipolar Hall-effect sensor switch in SIP-3L package, operating from 2.5V to 5.5V with 24μW typical supply power at 3V, ±40–60 G magnetic operate point, and open-drain output. It detects either north or south magnetic poles for cover-open/close sensing in clam-shell mobile phones.

For engineers reviewing the AH180-PL-B datasheet, AH180-PL-B pinout, AH180-PL-B application, or AH180-PL-B equivalent, key selection criteria include magnetic sensitivity (Bop/Brp), ultra-low quiescent current (8–24 μA avg), SIP-3L thermal derating curve, and RoHS-compliant green molding compound.

Technical Context

The AH180 employs dual Hall plates with chopper-stabilized architecture to cancel offset drift and achieve minimal switch-point variation over temperature (−40°C to +85°C). Its latch-free output toggles on magnetic field presence above Bop and releases below Brp, with 15 G typical hysteresis.

It uses internal power-switching logic to enable periodic sampling (75–125 ms period) and awake-time control (75–125 μs), reducing average current while maintaining responsiveness. The open-drain output requires external pull-up (10–100 kΩ) and supports noise immunity via optional 10–100 nF bypass capacitor.

Key Specifications

Parameter	Value and Actual Design Meaning
Supply Voltage	2.5 V to 5.5 V - Enables direct integration into single-cell Li-ion or 3.3 V/5 V system rails without regulation.
Avg. Supply Current	8–24 μA - Delivers >1-year battery life in cover-sense applications with typical 10 s wake interval.
Operate Point (Bop)	±40–60 G - Detects weak magnets at ≥2 mm air gap, suitable for thin clamshell phone lids.
Hysteresis (Bhy)	≥15 G - Prevents chatter during slow magnet approach/retraction near threshold.
Output Type	Open-drain - Allows wired-OR configuration and level-shifting with external pull-up resistor.
ESD Rating	6 kV HBM (SIP-3L) - Survives handling and assembly without additional protection circuitry.
Operating Temp	−40°C to +85°C - Validated for consumer handheld environments including summer car interiors.

Pinout & Package

SIP-3L (Straight Lead, 3-pin single-inline package) with 2.00 mm × 1.15 mm body, 0.51 mm active area depth, and branded surface marking "180". Pin 1 = Vdd, Pin 2 = GND, Pin 3 = Output.

Pin/Terminal	Circuit Role	Design Meaning
1 (Vdd)	Power supply input	Accepts 2.5–5.5 V; internal regulator supplies bias to Hall plates and logic; decoupling cap required.
2 (GND)	Ground reference	Return path for Hall plate bias and output sink current; must be low-impedance to minimize noise coupling.
3 (Output)	Open-drain digital output	Sinks up to 1 mA when active (low); floats high when inactive; requires external pull-up to Vdd or another rail.

Key Features

Feature	Design Value
Omnipolar magnetic detection	Responds identically to north or south pole - eliminates magnet orientation constraints in mechanical assembly.
Chopper-stabilized architecture	Reduces offset drift to <1.5 G/°C - maintains consistent Bop across full −40°C to +85°C range.
Ultra-low power sampling	75–125 ms period with 75–125 μs awake time - achieves 24 μW @ 3 V without compromising response latency.
Green RoHS-compliant packaging	Br-free, Sb-free molding compound - meets EU Directive 2002/95/EC with all applicable exemptions applied.
High ESD robustness	6 kV HBM rating - withstands electrostatic discharge during board handling and final assembly without protection diodes.

Applications

Cover switch in clam-shell cellular phones

Cover switch in Notebook PC/PDA

Use Scenario: Detects flip lid open/close state in dual-hinge mobile handsets to enable display backlight control and sleep/wake transitions.

IC Role / Device Role / Timing Role: Magnetic proximity sensor providing digital on/off signal synchronized to mechanical actuation timing (≤125 ms response).

Use Value: Eliminates sliding or tactile switches, reducing mechanical wear and enabling thinner bezel designs with consistent 2 mm air-gap detection.

Use Scenario: Monitors clamshell lid position in ultraportable notebooks and PDAs to suspend/resume CPU activity and disable touchpad input.

IC Role / Device Role / Timing Role: Low-power Hall switch generating interrupt-capable logic-level output upon magnet proximity change.

Use Value: Achieves sub-25 μA system standby current by enabling deep-sleep modes without sacrificing wake reliability.

Contact-less switch in consumer products

Position sensing in portable audio devices

Use Scenario: Replaces mechanical buttons in wireless speakers, smart remotes, and wearable enclosures where dust/moisture sealing is critical.

IC Role / Device Role / Timing Role: Solid-state magnetic actuator interface with no moving contacts; immune to oxidation and particulate ingress.

Use Value: Extends product lifetime beyond 100,000 actuations while maintaining IP54+ enclosure integrity.

Use Scenario: Detects earbud case lid closure in true wireless stereo (TWS) charging cases to initiate battery charging and Bluetooth pairing state reset.

IC Role / Device Role / Timing Role: Micropower Hall switch triggering charge management IC via open-drain signal with <100 μs latency.

Use Value: Enables zero-current storage mode with automatic reactivation-reducing parasitic drain to <1 μA per earbud.

Equivalent & Alternatives

The following parts are listed as comparable options for similar omnipolar Hall-effect switch applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
AL3320-30D	Higher Bop (±50–80 G), 3.5 V min supply, 15 μA avg current, SC59 package only	Requires stronger magnet or closer placement; not SIP-3L drop-in; lacks DFN options	Select when higher magnetic immunity is needed and SIP-3L footprint is not mandatory.
US1881EUA-AAA-000	Lower Bop (±25–50 G), 2.2 V min supply, 20 μA avg current, SOT-23 package	Better sensitivity for weak-field use but lower ESD (4 kV HBM); no SIP-3L variant available	Prefer for space-constrained PCBs needing finer pitch and lower voltage operation down to 2.2 V.

Compared with AL3320-30D and US1881EUA-AAA-000, AH180-PL-B uniquely combines SIP-3L mechanical compatibility, 6 kV HBM robustness, and balanced Bop/Brp hysteresis for cost-sensitive clamshell designs requiring long-term reliability without magnet recalibration.

Availability

AH180-PL-B is available at Aetrix Electronics and suitable for cover-switch sensing in clam-shell cellular phones, notebook PC lid detection, and contactless user-interface actuation requiring stable component supply and RoHS-compliant green packaging.

Supply support for AH180-PL-B 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 high-reliability, energy-efficient components for consumer, computing, and industrial markets.

AH180 belongs to Diodes' Hall-effect sensor product line, engineered specifically for ultra-low-power magnetic switching in battery-operated portable electronics with stringent size and thermal constraints.

FAQ

What is the minimum recommended pull-up resistor value for the AH180-PL-B open-drain output?

The datasheet specifies a recommended pull-up range of 10 kΩ to 100 kΩ. A 10 kΩ resistor ensures fast rise time (<1 μs) and reliable logic-high under worst-case load, while still limiting sink current to ≤0.5 mA at 5 V - well within the 1 mA absolute maximum rating and supporting robust noise margin in noisy environments.

Does AH180-PL-B require an external bypass capacitor, and if so, what value is recommended?

Yes, a bypass capacitor is recommended between Vdd and GND to stabilize supply and improve RF noise immunity. The datasheet specifies 10 nF to 100 nF ceramic capacitor placed as close as possible to the SIP-3L pins. A 22 nF X7R capacitor provides optimal balance of decoupling effectiveness and board space efficiency for portable applications.

Can AH180-PL-B operate reliably at 2.5 V supply with full magnetic specification guaranteed?

Yes - the Recommended Operating Conditions table explicitly guarantees operation at 2.5 V minimum, and Electrical Characteristics are tested at Vdd = 2.5–5.5 V across −40°C to +85°C. Bop/Brp values shift <5% from 3 V to 2.5 V, remaining within ±40–60 G limits, and average current stays ≤24 μA, confirming full spec compliance at minimum rail.

Is the SIP-3L package of AH180-PL-B compatible with standard SMT reflow profiles for lead-free assembly?

Yes - AH180-PL-B is marked "PL" indicating lead-free construction and qualified for JEDEC J-STD-020D MSL3 reflow. Its SIP-3L package withstands peak temperatures up to 260°C for 30 seconds. The green molding compound is compatible with standard Pb-free solder paste and does not require special pre-bake or nitrogen atmosphere.

AH180-PL-B Specifications

Product attributes: Attribute value

Manufacturer:: Diodes Incorporated

Series:: -

Package/Case:: 3-SIP

Packaging:: Bulk

Product Status:: Obsolete

Function:: Omnipolar Switch

Technology:: Hall Effect

Polarization:: North Pole, South Pole

Sensing Range:: ±6mT Trip, ±1mT Release

Test Condition:: 25°C

Voltage - Supply:: 2.5V ~ 5.5V

Current - Supply (Max):: 16µA

Current - Output (Max):: -

Output Type:: Open Drain

Features:: -

Operating Temperature:: -40°C ~ 85°C (TA)

Grade:: -

Qualification:: -

Mounting Type:: Through Hole

Supplier Device Package:: 3-SIP

AH180-PL-B FAQ

1.How can I place an order for AH180-PL-B through Aetrix?

Please submit a Request for Quotation (RFQ) for AH180-PL-B 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 AH180-PL-B reliable?

The price and inventory of AH180-PL-B are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AH180-PL-B is usually 5 days.

3.What payment methods are accepted for AH180-PL-B?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AH180-PL-B transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for AH180-PL-B?

AH180-PL-B orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your AH180-PL-B 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 AH180-PL-B?

For technical support, including AH180-PL-B datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AH180-PL-B requirements.

6.How does Aetrix verify that AH180-PL-B is sourced from the original manufacturer or authorized distributors?

All AH180-PL-B 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 AH180-PL-B meets industry standards.

7.What is the process for return or replacement of AH180-PL-B?

All AH180-PL-B units undergo pre-shipment inspection (PSI). If there is an issue with AH180-PL-B, 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 AH180-PL-B part is unused and in its original packaging.

Return procedure for AH180-PL-B:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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