Diodes Incorporated AH1913-W-7

Overview

AH1913-W-7 from Diodes Incorporated is an ultra-high sensitivity digital omnipolar Hall-effect switch IC in SC59 package, operating from 1.6V to 5.5V supply, consuming only 12μA average current at 1.8V, with magnetic operate points of ±9–27 Gauss and 6kV HBM ESD rating-designed for contactless position detection in battery-powered smart covers, smoke detectors, and IoT end nodes.

For engineers reviewing the AH1913-W-7 datasheet, AH1913-W-7 pinout, AH1913-W-7 application, or AH1913-W-7 equivalent, key selection criteria include micropower sleep/awake timing (45μs awake time, 2.8ms period), chopper-stabilized thermal drift performance, omnidirectional pole activation, and dual-package compatibility (SC59 and X1-DFN1216-4).

Technical Context

The AH1913 employs a hibernating clocking system that alternates between ultra-low-power sleep mode (360nA typical) and brief awake periods (45μs) to sample magnetic field, enabling 12μA average supply current. Its chopper-stabilized architecture cancels offset drift, ensuring stable BOP/BRP thresholds across −40°C to +85°C and 1.6V–5.5V supply range.

Omnipolar operation is implemented via dual Hall plates and polarity-insensitive latch logic: either north or south pole applied perpendicular to the package activates the open-drain output (pulled low), with 7G typical hysteresis (BHY) preventing chatter near switching thresholds.

Key Specifications

Pinout & Package

Package: SC59 - 3-pin SOT-23 variant with exposed thermal pad (not electrically connected), 2.8mm × 3.0mm footprint, 1.1mm height, RoHS-compliant lead-free finish.

Key Features

Applications

Equivalent & Alternatives

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

Compared with A3212LLHLT-T and US1881EUA-ABA-000-REEL, AH1913-W-7 uniquely combines omnipolarity, sub-15μA average current, ±9G sensitivity, and SC59 footprint - making it the only choice for miniaturized, battery-critical consumer IoT endpoints requiring zero-magnet-orientation assembly.

Availability

AH1913-W-7 is available at Aetrix Electronics and suitable for smart cover detection, smoke detector tamper sensing, and IoT asset tracking requiring stable component supply, long-lifecycle support, and consistent parametric performance across production batches.

Supply support for AH1913-W-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 North America.

The AH1913 belongs to Diodes' broad Hall-effect switch family, engineered specifically for ultra-low-power, high-reliability contactless sensing in portable and safety-critical consumer and industrial systems.

FAQ

What is the maximum recommended operating voltage for continuous use of AH1913-W-7?

The AH1913-W-7 is rated for continuous operation from 1.6V to 5.5V. Although its absolute maximum supply voltage is 6V, this is a transient stress rating only; sustained operation above 5.5V may cause irreversible damage or accelerated parametric shift. Diodes Incorporated specifies 5.5V as the functional upper limit across the full temperature range.

Does AH1913-W-7 require an external pull-up resistor on the OUTPUT pin?

Yes - the OUTPUT pin is an open-drain structure and must be externally pulled up to a logic-compatible voltage (e.g., VDD or host MCU I/O rail). A 10kΩ resistor is typical; value selection balances rise time (lower R) against power consumption (higher R). No internal pull-up is integrated.

Can AH1913-W-7 reliably detect magnets through 1mm of stainless steel?

Yes - with its ±9G minimum operate point and chopper-stabilized design, AH1913-W-7 maintains reliable switching through 1mm stainless steel (relative permeability ~1.002) when paired with a ≥10mm³ N35 or stronger magnet positioned within 2mm of the package marking side. Performance validation under actual mechanical stack-up is recommended.

Is the NC pin on the X1-DFN1216-4 variant of AH1913 internally connected?

No - Pin 3 (NC) on the X1-DFN1216-4 package is a no-connect terminal with no internal bond wire or silicon connection. It may be left floating or tied to GND for mechanical stability or thermal relief; neither option affects electrical performance or reliability.