Send an Inquiry

To receive a quote for your project, please fill in the following information, and we’ll get back to you promptly.

Submit Inventory List

Please fill in the following information, and we’ll get back to you promptly.

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

Diodes Incorporated AH3524Q-P-B

Name: AH3524Q-P-B
Brand: Diodes Incorporated
SKU: AH3524Q-P-B
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

Compare

Part No.:: AH3524Q-P-B

Manufacturer:: Diodes Incorporated

Category:: Switches (Solid State)

Package:: 3-SIP

Datasheet:: AH3524Q-P-B.pdf

Description:: HALL OMNIPOLAR SWITCH SIP-3 BULK

Quantity:: RFQ Add To RFQ list

Payment:

Shipping:

Inventory:2,042

Please send an inquiry. Send us your inquiry, and we will respond immediately.

Product details

Overview

AH3524Q-P-B from Diodes Incorporated is an AEC-Q100 Grade 0 qualified, high-voltage (3.0–28 V), high-sensitivity omnipolar Hall-effect switch IC with ±20–±60 G operate point, open-drain output, and -40°C to +150°C operation-designed for seatbelt buckle detection, gear position sensing, and door/trunk closure monitoring in automotive systems.

For engineers reviewing the AH3524Q-P-B datasheet, AH3524Q-P-B pinout, AH3524Q-P-B application, or AH3524Q-P-B equivalent, this page delivers verified magnetic thresholds (BOP/BRP), chopper-stabilized temperature stability, load-dump protection, ESD ratings (8 kV HBM), and SIP-3 package terminal mapping-critical for robust automotive proximity sensing design.

Technical Context

The AH3524Q-P-B uses a chopper-stabilized architecture with dynamic offset cancellation and internal bandgap regulation to maintain stable switching points across temperature and supply voltage variations. Its hysteresis (9–22 G) prevents chatter during magnetic transitions, and the Zener clamp on both VDD and OUTPUT pins enables 40 V load-dump tolerance and overvoltage protection.

It operates as a single-pole-independent switch: output turns low when |B| exceeds BOP (±20–±60 G), remains latched until |B| falls below BRP (±10–±45 G), and features integrated reverse-blocking diode, 30–55 mA output current limiting, and <0.4 V saturation voltage at 20 mA-enabling direct interface with 3.3 V/5 V/12 V microcontroller inputs.

Key Specifications

Parameter	Value and Actual Design Meaning
Supply Voltage Range	3.0 V to 28 V - supports direct battery connection in 12 V/24 V automotive systems without external regulators.
Operate Point (BOP)	±20 G to ±60 G typical - enables reliable actuation with small, low-cost magnets at air gaps up to 3 mm.
Release Point (BRP)	±10 G to ±45 G typical - provides 9–22 G hysteresis to reject mechanical vibration and magnetic noise.
Output Type	Open-drain with 30–55 mA current limit - allows flexible pull-up to any logic rail and protects against short-circuit faults.
Temperature Range	-40°C to +150°C - qualified for under-hood and cabin-mounted automotive locations per AEC-Q100 Grade 0.
ESD Rating	8 kV HBM, 1 kV CDM - meets stringent automotive ESD immunity requirements without external protection.
Load Dump Protection	40 V transient rating - withstands ISO 7637-2 Pulse 5a without external TVS diodes.

Pinout & Package

SIP-3 (Bulk Pack) package: 3-pin single-inline package with gull-wing leads, 14.5 mm body length, 3.0 mm width, and 1.5 mm height-optimized for automated through-hole assembly in automotive control modules.

Pin/Terminal	Circuit Role	Design Meaning
1	VDD	Power input with integrated reverse-blocking diode and 28 V Zener clamp-accepts 3–28 V DC and blocks reverse polarity up to -18 V.
2	GND	Ground reference for internal regulator, Hall sensor, and output stage-must be low-impedance for stable chopper operation.
3	OUTPUT	Open-drain NMOS output with 30–55 mA current limit and 28 V Zener clamp-requires external pull-up; sinks current when B > BOP.

Key Features

Feature	Design Value
Omnipolar magnetic sensitivity	Responds to either north or south pole-eliminates magnet orientation constraints in space-constrained assemblies like seatbelt latches.
Chopper-stabilized architecture	Reduces thermal drift of BOP/BRP to <±0.5 G/°C-ensures consistent switching across full -40°C to +150°C range without calibration.
Integrated protection circuitry	Reverse-blocking diode + dual Zener clamps (VDD and OUTPUT)-removes need for 3 external protection components in ISO 16750-compliant designs.
Low power startup	10 µs power-on time at ≥3 V-enables fast system wake-up in always-on vehicle domains (e.g., door-open warning).
RF noise immunity	Validated against 100 MHz–1 GHz radiated RF fields per ISO 11452-2-maintains stable output during infotainment or cellular transmission.

Applications

Seatbelt Buckle Detection

Gear Position Sensing

Use Scenario: Detect buckle insertion/removal in driver/passenger seats to enable airbag readiness and occupant classification.

IC Role / Device Role / Timing Role: Omnipolar Hall switch providing latched ON/OFF state based on magnet presence near buckle tongue.

Use Value: ±20–±60 G sensitivity ensures reliable actuation with miniature magnets embedded in plastic buckles-even after 10-year aging and thermal cycling.

Use Scenario: Monitor P/R/N/D positions in automatic transmission shifters or electronic park brakes.

IC Role / Device Role / Timing Role: Proximity sensor detecting gear lever magnet position; output directly interfaces MCU GPIO with pull-up.

Use Value: 9–22 G hysteresis prevents false toggling during gear transition vibration; 40 V load-dump rating survives battery transients during shifting.

Door/Trunk Closure Monitoring

HVAC Actuator Position Feedback

Use Scenario: Confirm door or trunk lid fully closed for anti-pinch, lighting, and alarm functions in body control modules.

IC Role / Device Role / Timing Role: Hall switch mounted on latch mechanism; magnet on moving striker triggers output state change.

Use Value: -40°C to +150°C operation guarantees function in extreme ambient conditions; SIP-3 package withstands mechanical shock per AEC-Q200.

Use Scenario: Provide feedback on blend door or mode door position in automotive HVAC systems.

IC Role / Device Role / Timing Role: Non-contact position detector replacing potentiometers-immune to dust, moisture, and wear.

Use Value: Chopper stabilization maintains accuracy over 15,000+ actuation cycles; 3.0–28 V supply range matches HVAC module's wide-input DC/DC output.

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
Allegro A1174LUA-T	BOP ±35 G typical, 2.5–24 V supply, SOIC-8 package, no load-dump protection	Lacks 40 V transient rating and AEC-Q100 Grade 0 qualification-requires external TVS and derating for under-hood use	Select only for cabin-only applications with regulated 5 V/12 V supply and lower reliability requirements.
Melexis US1881EUA-ABA-002-SP	BOP ±25 G typical, 3.5–24 V supply, SIP-3 package, 6 kV HBM ESD, no reverse-blocking diode	Requires external reverse-polarity protection; lower ESD rating reduces robustness in high-static environments	Acceptable for cost-sensitive interior modules where reverse battery events are mitigated elsewhere in the system.

Compared with A1174LUA-T and US1881EUA-ABA-002-SP, AH3524Q-P-B uniquely integrates reverse-blocking diode, 40 V load-dump tolerance, and AEC-Q100 Grade 0 qualification-making it the only drop-in solution for unregulated 12 V/24 V automotive nodes requiring zero external protection components.

Availability

AH3524Q-P-B is available at Aetrix Electronics and suitable for seatbelt detection, gear position sensing, door closure monitoring, and HVAC actuator feedback requiring stable component supply across automotive production lifecycles.

Supply support for AH3524Q-P-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 semiconductor company specializing in discrete, analog, and mixed-signal solutions for automotive, industrial, and computing markets-with IATF 16949 certified manufacturing and AEC-Q100 product validation expertise.

The AH352XQ series belongs to Diodes' automotive Hall-effect sensor product line, engineered specifically for contactless position and proximity sensing in harsh environments-emphasizing high-voltage resilience, wide temperature operation, and integrated protection.

FAQ

What is the magnetic operate point (BOP) range for AH3524Q-P-B?

The AH3524Q-P-B has a typical operate point of ±40 G, with a guaranteed range of ±20 G to ±60 G for both north and south poles. This is measured perpendicular to the package marking surface, and the value varies slightly with temperature and supply voltage-full min/typ/max data is provided in the DS46147 datasheet Table 4.

Does AH3524Q-P-B require an external capacitor on VDD?

Yes-a 10 nF to 100 nF ceramic decoupling capacitor (CIN) is required between VDD and GND, placed as close as possible to the device pins. This stabilizes the internal bandgap regulator and enhances immunity to conducted noise, especially in automotive power networks with high ripple and transients.

Can AH3524Q-P-B drive a relay directly?

No-it cannot drive a relay coil directly due to its 30–55 mA output current limit and open-drain topology. It must interface with an external NPN transistor or MOSFET driver stage. The output is designed for logic-level signaling or low-power loads such as LED indicators or MCU GPIO inputs.

Is AH3524Q-P-B pin-compatible with other AH352XQ variants?

Yes-all AH352XQ variants (AH3522Q, AH3523Q, AH3524Q) share identical SIP-3 and SOT23 pinouts, electrical interfaces, and protection features. Only magnetic sensitivity (BOP/BRP) and hysteresis differ; no PCB redesign is needed when upgrading sensitivity grades within the same package.

AH3524Q-P-B Specifications

Product attributes: Attribute value

Manufacturer:: Diodes Incorporated

Series:: -

Package/Case:: 3-SIP

Packaging:: Bulk

Product Status:: Active

Function:: Omnipolar Switch

Technology:: Hall Effect

Polarization:: North Pole, South Pole

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

Test Condition:: -40°C ~ 150°C

Voltage - Supply:: 3V ~ 28V

Current - Supply (Max):: 3mA

Current - Output (Max):: 30mA

Output Type:: Open Drain

Features:: -

Operating Temperature:: -40°C ~ 150°C

Grade:: -

Qualification:: -

Mounting Type:: Through Hole

Supplier Device Package:: 3-SIP

AH3524Q-P-B FAQ

1.How can I place an order for AH3524Q-P-B through Aetrix?

Please submit a Request for Quotation (RFQ) for AH3524Q-P-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 AH3524Q-P-B reliable?

The price and inventory of AH3524Q-P-B are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AH3524Q-P-B is usually 5 days.

3.What payment methods are accepted for AH3524Q-P-B?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AH3524Q-P-B transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for AH3524Q-P-B?

AH3524Q-P-B orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your AH3524Q-P-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 AH3524Q-P-B?

For technical support, including AH3524Q-P-B datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AH3524Q-P-B requirements.

6.How does Aetrix verify that AH3524Q-P-B is sourced from the original manufacturer or authorized distributors?

All AH3524Q-P-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 AH3524Q-P-B meets industry standards.

7.What is the process for return or replacement of AH3524Q-P-B?

All AH3524Q-P-B units undergo pre-shipment inspection (PSI). If there is an issue with AH3524Q-P-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 AH3524Q-P-B part is unused and in its original packaging.

Return procedure for AH3524Q-P-B:

1.Submit a request within 90 days.

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

Tech Hub

2026-08-18 Operational Amplifier (Op Amp): Basics, Configurations, Feedback and Applications

Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…

2026-08-14 Jumper Cables: How to Use, Connect and Choose Them Safely

Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…

2026-08-11 LDO Regulator: Dropout Voltage, Noise, PSRR and Power Dissipation

LDO regulator guide covering low dropout voltage, power dissipation, thermal design, PSRR, output noise, capacitor stability, adjustable LDO circuits, LDO vs buck converter and datasheet selection chec…

2026-08-06 Conditional Access Module: CAM, CI/CI+ and DVB Security

Conditional Access Module guide covering CAM meaning, CI/CI+ interface, smart card authorization, DVB security workflow, TV and set-top box compatibility, internal electronics, ESD protection, connecto…

2026-08-03 Electronic Component Obsolescence: EOL Risks, Replacement Options and Last-Time Buy Strategy

Guide to electronic component obsolescence covering EOL risk, PCN/PDN notices, last-time buy planning, replacement options, form-fit-function validation, counterfeit risk and BOM lifecycle management.

2026-07-29 18650 Battery: Voltage, Capacity, Charging and Pack Design

18650 battery guide covering lithium-ion cell basics, 3.6V/3.7V voltage, 4.2V charging, mAh and Wh capacity, protected cells, chargers, BMS, series-parallel packs, holders, welding and sourcing checks.…

2026-07-27 Hall Effect Sensor: Working Principle, Types, Circuits and Applications

Hall effect sensor guide covering working principle, linear and digital sensors, Arduino circuits, current sensing, speed detection, automotive applications, A3144 examples, signal filtering and datash…

2026-07-20 Product Change Notification (PCN) in Electronic Components: Meaning and Supply Chain Response

Product Change Notification guide for electronic components, covering PCN meaning, PCN vs PDN/EOL, common change types, risk levels, form-fit-function review, engineering validation, BOM control, LTB/L…

2026-07-19 Blend Door Actuator: Symptoms, Location, Reset and Replacement Guide

A practical guide to blend door actuators, covering HVAC function, symptoms, location, AC and heater issues, reset and calibration, replacement cost, electrical diagnosis, compatibility checks, and rep…

2026-07-17 Raspberry Pi Alternatives: Chip-Level Comparison, Compatibility and Replacement Guide

Engineering guide to Raspberry Pi alternatives, covering chip-level differences, Orange Pi, ROCK, Jetson, Banana Pi, NanoPi, Compute Module, Pico, GPIO, camera, HAT compatibility, and replacement risks…