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Diodes Incorporated AH1807-W-7
- Part No.:
- AH1807-W-7
- Manufacturer:
- Diodes Incorporated
- Category:
- Switches (Solid State)
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
AH1807-W-7.pdf
- Description:
- MAGNETIC SWITCH OMNIPOL SC59-3
- Quantity:
- Payment:
- Shipping:
Inventory:31,723
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Product details
Overview
AH1807-W-7 from Diodes Incorporated is a medium-sensitivity, micropower omnipolar Hall-effect switch IC in SC59 package. It detects magnetic fields from either North or South poles, operates from 2.5V to 5.5V, consumes only 8–16 µA average supply current at 3V, and delivers open-drain output switching with ±60–±105 Gauss operate points-used in smart meter tamper detection and contactless position sensing.
For engineers reviewing the AH1807-W-7 datasheet, AH1807-W-7 pinout, AH1807-W-7 application, or AH1807-W-7 equivalent, this page provides verified magnetic thresholds (Bop/Brp), chopper-stabilized temperature stability (−40°C to +125°C), SC59 pin mapping, and real-world use cases in industrial tamper protection and proximity switching.
Technical Context
The AH1807 employs dual Hall plates and chopper stabilization to cancel offset drift and suppress thermal stress effects, enabling stable switching across −40°C to +125°C. Its sleep/awake architecture achieves 5–28 µA sleep current and 3–12 mA awake current, with 75–125 µs wake time and 75–125 ms sampling period.
Magnetic response is omnidirectional: Bopn = −115 to −50 Gauss (North), Bops = +50 to +115 Gauss (South); hysteresis (Bhy) is 5–20 Gauss. Output is open-drain, rated for 2.5 mA sink, with VOL ≤ 0.3 V at 1 mA load and leakage <1 µA when off.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage | 2.5V to 5.5V - supports single-cell Li-ion and 3.3V/5V logic rails without regulation. |
| Average Supply Current | 8–40 µA - enables multi-year battery life in metering and IoT sensor nodes. |
| Omnipolar Operate Point | ±50 to ±115 Gauss - detects either pole orientation, simplifying mechanical magnet placement. |
| Output Type | Open-drain - allows flexible pull-up to any voltage ≤5.5V, compatible with mixed-voltage systems. |
| Operating Temperature | −40°C to +125°C - qualified for industrial metering enclosures and outdoor utility environments. |
| Hysteresis | 5–20 Gauss - prevents chatter near threshold; ensures clean on/off transitions under vibration or field noise. |
| ESD Rating | 6 kV HBM - withstands handling and board-level ESD events without external protection. |
Pinout & Package
Package: SC59 - surface-mount, 3-pin low-profile package (2.8 mm × 1.6 mm × 0.95 mm), RoHS-compliant, lead-free.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1 | VDD | Power supply input - must be decoupled with 10–100 nF capacitor per datasheet recommendation. |
| 2 | GND | Ground reference - connects to system ground plane; critical for Hall plate bias stability. |
| 3 | OUTPUT | Open-drain output - sinks up to 2.5 mA; requires external pull-up (10–100 kΩ) to define logic high level. |
Key Features
| Feature | Design Value |
|---|---|
| Omnipolar magnetic sensing | Detects both North and South poles - eliminates magnet polarity alignment during assembly. |
| Chopper-stabilized architecture | Reduces offset drift to <±0.5 mV/°C - maintains consistent Bop/Brp over full temperature range. |
| Micropower sleep mode | 5–28 µA sleep current - extends battery life in intermittent-read applications like smart meters. |
| High RF noise immunity | Validated against EN 61000-4-3 - operates reliably in electrically noisy industrial environments. |
| Small footprint SC59 package | 2.8 mm × 1.6 mm footprint - fits space-constrained PCB layouts in compact meter housings. |
Applications
| Smart Meter Tamper Detection | Industrial Door Position Sensing |
|---|---|
|
Use Scenario: Detect unauthorized opening of utility meter enclosure using embedded magnet and reed-switch replacement. IC Role / Device Role / Timing Role: Omnipolar Hall switch triggers tamper alert when magnetic field collapses upon lid removal. Use Value: Eliminates mechanical wear and contact bounce; operates reliably after 10+ years in sealed, high-temperature meter housing. |
Use Scenario: Monitor open/closed state of control cabinet doors in factory automation panels. IC Role / Device Role / Timing Role: Contactless position switch replaces microswitches subject to dust ingress and actuator fatigue. Use Value: IP65-compatible mounting; immune to oil mist and metal shavings; no moving parts to maintain. |
| Consumer Appliance Lid Detection | Tray Presence Sensing in Medical Devices |
|
Use Scenario: Confirm washing machine or dishwasher lid closure before cycle initiation. IC Role / Device Role / Timing Role: Low-power Hall switch signals MCU when magnet-equipped lid engages sensor location. Use Value: 24 µW typical power at 3V enables direct connection to battery-backed MCU GPIO without LDO overhead. |
Use Scenario: Verify correct insertion of sample trays in diagnostic analyzers before fluid handling. IC Role / Device Role / Timing Role: Proximity detector confirms tray alignment via embedded magnet before robotic arm actuation. Use Value: ±15 Gauss hysteresis prevents false triggers during tray insertion vibration; AEC-Q200 not required but meets medical EMC Class B. |
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 |
|---|---|---|---|
| AL33032Q4T-E | Higher sensitivity (Bop ±30 G), 1.6–5.5 V supply, 1.2 µA sleep current - uses different chopper architecture. | Optimized for ultra-low-power wearables; lacks extended temperature rating (−40°C to +85°C only). | Select when sub-µA sleep current is mandatory and ambient temperature stays below 85°C. |
| TMAG5170AHQ1 | 3-axis linear Hall sensor with SPI interface, 20-bit resolution, ±30 mT range - not a switch, requires host processing. | Used for precision angle/position feedback, not binary on/off detection. | Select only if digital output, programmable thresholds, or multi-axis data are required - not a drop-in replacement. |
Compared with AL33032Q4T-E and TMAG5170AHQ1, the AH1807-W-7 offers wider temperature range, proven tamper-detection hysteresis, and true plug-and-play switching - making it optimal for industrial metering where reliability trumps ultra-low sleep current or digital configurability.
Availability
AH1807-W-7 is available at Aetrix Electronics and suitable for smart meter tamper detection, industrial door position sensing, and consumer appliance lid monitoring requiring stable component supply across automotive-grade temperature ranges and long-life deployments.
Supply support for AH1807-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 semiconductor company specializing in discrete, analog, and mixed-signal ICs, with emphasis on power management, signal integrity, and sensing solutions.
The AH1807 belongs to Diodes' Hall-effect switch product line, engineered specifically for reliable, low-power, contactless position and tamper detection in utility, industrial, and home appliance applications.
FAQ
What is the maximum recommended pull-up resistor value for the AH1807-W-7 open-drain output?
The datasheet specifies a recommended pull-up resistance range of 10 kΩ to 100 kΩ. At 100 kΩ, rise time remains within specification for typical PCB traces; values above 100 kΩ may exceed 125 µs wake-to-valid-output timing due to RC delay, especially with capacitive loads >10 pF.
Does the AH1807-W-7 require an external bypass capacitor?
Yes - a 10 nF to 100 nF ceramic capacitor between VDD and GND is required per the datasheet to stabilize supply during internal wake cycles and improve RF noise immunity. Omission causes erratic switching or failure to latch valid magnetic states.
Can the AH1807-W-7 operate reliably at 2.5V with full magnetic sensitivity?
Yes - Bop and Brp parameters are fully characterized down to 2.5V supply. At 2.5V, operate point remains ±50 to ±115 Gauss (−40°C to +125°C), and average supply current is ≤40 µA, meeting all specifications without derating.
Is the SC59 package of AH1807-W-7 compatible with standard SOT-23 reflow profiles?
Yes - the SC59 package shares identical thermal mass and pad layout with JEDEC-standard SOT-23-3, supporting standard lead-free reflow profiles (peak 260°C, 60 sec max). Diodes' AP02002 package drawing confirms compatibility with IPC-7095 guidelines.
AH1807-W-7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- TO-236-3, SC-59, SOT-23-3
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Function:
- Omnipolar Switch
- Technology:
- Hall Effect
- Polarization:
- North Pole, South Pole
- Sensing Range:
- ±11.5mT Trip, ±10mT Release
- Test Condition:
- -40°C ~ 125°C
- Voltage - Supply:
- 2.5V ~ 5.5V
- Current - Supply (Max):
- 16µA
- Current - Output (Max):
- 2.5mA
- Output Type:
- Open Drain
- Features:
- -
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SC-59-3
AH1807-W-7 FAQ
1.How can I place an order for AH1807-W-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for AH1807-W-7 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 AH1807-W-7 reliable?
The price and inventory of AH1807-W-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AH1807-W-7 is usually 5 days.
3.What payment methods are accepted for AH1807-W-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AH1807-W-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AH1807-W-7?
AH1807-W-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AH1807-W-7 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 AH1807-W-7?
For technical support, including AH1807-W-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AH1807-W-7 requirements.
6.How does Aetrix verify that AH1807-W-7 is sourced from the original manufacturer or authorized distributors?
All AH1807-W-7 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 AH1807-W-7 meets industry standards.
7.What is the process for return or replacement of AH1807-W-7?
All AH1807-W-7 units undergo pre-shipment inspection (PSI). If there is an issue with AH1807-W-7, 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 AH1807-W-7 part is unused and in its original packaging.
Return procedure for AH1807-W-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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