My Inquiry
My Account
Asahi Kasei Microdevices/AKM HW109A
- Part No.:
- HW109A
- Manufacturer:
- Asahi Kasei Microdevices/AKM
- Category:
- Linear, Compass (ICs)
- Package:
- -
- Datasheet:
-
HW109A.pdf
- Description:
- SENSOR LINEAR HALL EFFECT
- Quantity:
- Payment:
- Shipping:
Inventory:2,007
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
HW109A from Asahi Kasei Microdevices (AKM) is an indium antimonide (InSb) Hall effect sensor element designed for precision magnetic field sensing in constant-voltage or constant-current drive configurations. It delivers output Hall voltage (VH) of 168–204 mV at B = 50 mT and VC = 1 V (Rank C), with input resistance 250–450 Ω, offset voltage ≤ ±7 mV, and operating temperature range −40 °C to +110 °C - used in industrial current sensing and rotary position feedback.
For engineers reviewing the HW109A datasheet, HW109A pinout, HW109A application, or HW109A equivalent, key selection criteria include its Rank-specified VH tolerance band, temperature coefficients (αVH = ±1.0 %/°C, αRin = ±1.8 %/°C), dielectric strength (100 V DC), and compliance with input derating curves across −40 °C to +125 °C storage range.
Technical Context
The HW109A is a passive, four-terminal Hall element requiring external biasing - not an integrated Hall IC. Its operation relies on Lorentz force-induced transverse voltage generation in InSb crystal lattice under magnetic flux density (B), with sensitivity defined by VH/B ratio and strongly dependent on drive mode (constant voltage vs. constant current).
Input resistance (Rin: 250–450 Ω) exhibits significant negative temperature coefficient, necessitating strict adherence to input current derating curves above 25 °C; output resistance (Rout: 320–450 Ω) and offset voltage (Vos: ±7 mV) are specified at B = 0 mT and IC = 0.1 mA, supporting differential measurement topologies.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VH @ B=50 mT | 168–204 mV (Rank C); defines usable signal amplitude for analog magnetic detection circuits |
| Rin | 250–450 Ω; determines required drive voltage/current and thermal self-heating effects |
| Vos | ±7 mV max; sets minimum detectable field change without nulling compensation |
| αVH | ±1.0 %/°C; quantifies Hall voltage drift over temperature, critical for uncalibrated systems |
| Topr | −40 °C to +110 °C; constrains mounting location and thermal management in motor control enclosures |
| Dielectric Strength | 100 V DC; specifies maximum isolation voltage between terminals and package substrate |
| Package Dimensions | 2.7±0.2 × 2.1±0.1 × 1.35±0.1 mm; fits compact PCB layouts with surface-mount reflow compatibility |
Pinout & Package
HW109A uses a 4-pin SMD ceramic package (dimensions: 2.7×2.1×1.35 mm). Terminals are arranged in standard Hall element configuration: two for excitation (input), two for Hall voltage output.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Input Anode (+) | Positive excitation terminal for constant-voltage or constant-current drive |
| 2 | Output Anode (+) | Positive Hall voltage output; polarity reverses with magnetic field direction |
| 3 | Input Cathode (−) | Return path for excitation current; common reference for bias network |
| 4 | Output Cathode (−) | Negative Hall voltage output; used with Pin 2 for differential readout |
Key Features
| Feature | Design Value |
|---|---|
| InSb active material | Delivers high electron mobility (~78,000 cm²/V·s) enabling superior sensitivity vs. Si or GaAs Hall elements |
| Rank-specified VH | Four calibrated sensitivity grades (C/D/E/F) allow binning for system-level gain matching |
| Low offset voltage | ±7 mV max enables sub-10 mT detection without trimming in cost-sensitive applications |
| High dielectric strength | 100 V DC isolation supports use in medium-voltage motor phase current sensing |
| Thermal derating guidance | Published IC and VC derating curves ensure stable operation up to +110 °C ambient |
Applications
| Brushless DC Motor Commutation | Industrial Current Sensing |
|---|---|
Use Scenario: Detect rotor magnet position in BLDC motors for electronic commutation timing. IC Role / Device Role / Timing Role: Passive Hall element providing analog B-field magnitude and polarity feedback to controller ADC. Use Value: Enables precise 120° electrical angle alignment with ±1.5° mechanical error margin using Rank C VH tolerance. | Use Scenario: Measure AC/DC current via magnetic field around conductor in power supplies and inverters. IC Role / Device Role / Timing Role: Open-loop magnetic field transducer mounted on current-carrying busbar or PCB trace. Use Value: Delivers linear 168–204 mV output per 50 mT field, compatible with low-cost op-amp conditioning stages. |
| Rotary Position Feedback | Proximity Detection |
Use Scenario: Sense angular displacement of ferrous target in valve position or throttle actuator. IC Role / Device Role / Timing Role: Analog field-strength sensor interfaced to ratiometric ADC with VC reference. Use Value: Stable αVH = ±1.0 %/°C allows <1% full-scale error over −40 °C to +85 °C without calibration. | Use Scenario: Detect presence/absence of permanent magnet in safety interlocks or door switches. IC Role / Device Role / Timing Role: Threshold-based proximity detector using comparator with adjustable hysteresis. Use Value: High VH output enables direct interface to 3.3 V logic comparators without amplification. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Hall element applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| HW-108A | Lower VH (120–144 mV @ 50 mT), same package and Rin range | Suitable where reduced sensitivity avoids ADC saturation in high-field environments | Select HW-108A when system magnetic flux exceeds 60 mT and gain headroom is constrained |
| HW-110A | Higher VH (266–320 mV @ 50 mT, Rank F), identical thermal specs and pinout | Preferred for low-noise, low-gain signal chains requiring >250 mV full-scale output | Choose HW-110A when signal-to-noise ratio demands ≥266 mV output at nominal 50 mT field |
Compared with HW-108A and HW-110A, the HW109A provides mid-range sensitivity ideal for general-purpose industrial field detection where 168–204 mV output balances noise immunity and dynamic range without requiring additional gain stages.
Availability
HW109A is available at Aetrix Electronics and suitable for brushless DC motor commutation, industrial current sensing, rotary position feedback, and proximity detection requiring stable component supply and consistent Rank-C calibration.
Supply support for HW109A 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
Asahi Kasei Microdevices (AKM) is a Japanese semiconductor company specializing in analog and mixed-signal sensors, audio codecs, and power management ICs.
The HW109A belongs to AKM's InSb Hall element product line, engineered for high-sensitivity, temperature-stable magnetic field measurement in industrial motion control and energy monitoring systems.
FAQ
What is the recommended drive method for HW109A?
The HW109A supports both constant-voltage and constant-current excitation. For stable sensitivity, constant-voltage drive at VC = 1 V is recommended per datasheet test conditions. Constant-current drive at IC = 5 mA is also valid but requires attention to input resistance drift with temperature - always follow the published derating curves to avoid thermal runaway.
How does the Rank grading affect HW109A performance?
Rank grading (C/D/E/F) specifies the calibrated VH output range at B = 50 mT and VC = 1 V. HW109A Rank C guarantees 168–204 mV, enabling predictable gain setting in downstream signal chains. This binning reduces system-level calibration effort and improves batch-to-batch consistency in production motor control modules using HW109A.
Can HW109A be used in automotive applications?
No - the HW109A is not qualified to AEC-Q200 or automotive temperature grades. Its specified operating range is −40 °C to +110 °C, and AKM explicitly states it is not intended for life support, safety-critical, or automotive hazard-related systems. Use only in industrial, commercial, or consumer equipment where failure does not risk injury or loss of life.
What is the significance of the ±7 mV offset voltage in HW109A?
The ±7 mV offset voltage (Vos) represents the Hall output at zero magnetic field and defines the baseline error in open-loop measurements. When using HW109A in current sensing, this offset contributes directly to zero-current error - requiring either hardware nulling (e.g., potentiometer) or software offset subtraction. Its stability over temperature (αVH) further impacts long-term accuracy.
Is HW109A RoHS compliant and halogen-free?
Yes - HW109A complies with RoHS Directive 2011/65/EU and is halogen-free per JIS C 0950. The ceramic SMD package contains no lead, mercury, cadmium, hexavalent chromium, PBB, or PBDE, and bromine/chlorine content is below 900 ppm each, verified through material declaration and third-party testing.
HW109A Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Asahi Kasei Microdevices/AKM
- Series:
- *
- Package/Case:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Technology:
- -
- Axis:
- -
- Output Type:
- -
- Sensing Range:
- -
- Voltage - Supply:
- -
- Current - Supply (Max):
- -
- Current - Output (Max):
- -
- Resolution:
- -
- Bandwidth:
- -
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- -
- Features:
- -
- Supplier Device Package:
- -
- Mounting Type:
- -
HW109A FAQ
1.How can I place an order for HW109A through Aetrix?
Please submit a Request for Quotation (RFQ) for HW109A 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 HW109A reliable?
The price and inventory of HW109A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for HW109A is usually 5 days.
3.What payment methods are accepted for HW109A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for HW109A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for HW109A?
HW109A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your HW109A 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 HW109A?
For technical support, including HW109A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your HW109A requirements.
6.How does Aetrix verify that HW109A is sourced from the original manufacturer or authorized distributors?
All HW109A 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 HW109A meets industry standards.
7.What is the process for return or replacement of HW109A?
All HW109A units undergo pre-shipment inspection (PSI). If there is an issue with HW109A, 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 HW109A part is unused and in its original packaging.
Return procedure for HW109A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
HW109A Tags
-
DRV5053VAQDBZR
Texas Instruments
-
MMC5603NJ
Memsic Inc.
-
DRV5055A1QDBZR
Texas Instruments
-
MLX90392ELQ-AAA-011-RE
Melexis Technologies NV
-
CT100LW-HS6
Allegro MicroSystems
-
DRV5056A1ELPGMQ1
Texas Instruments
-
A1304ELHLX-T
Allegro MicroSystems
-
MMC5633NJL
Memsic Inc.
-
A1308KUA-2-T
Allegro MicroSystems
-
A1308KUA-1-T
Allegro MicroSystems
-
SI7210-B-04-IVR
Silicon Labs
-
A1308LLHLT-2-T
Allegro MicroSystems
Tech Hub
A practical engineering and sourcing framework covering lifecycle verification, lifetime-buy calculations, replacement qualification, supplier checks and counterfeit-risk controls.
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
