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Diodes Incorporated AH1807-Z-7
- Part No.:
- AH1807-Z-7
- Manufacturer:
- Diodes Incorporated
- Category:
- Switches (Solid State)
- Package:
- -
- Datasheet:
-
AH1807-Z-7.pdf
- Description:
- MAGNETIC SWITCH OMNIPOLAR SOT553
- Quantity:
- Payment:
- Shipping:
Inventory:2,708
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Product details
Overview
AH1807-Z-7 from Diodes Incorporated is a medium sensitivity, micropower omnipolar Hall-effect switch IC in SOT553 package. It operates from 2.5V to 5.5V, consumes only 8–16 µA average supply current at 3V, and switches its open-drain output on with either North or South magnetic pole-enabling tamper detection in smart electricity meters.
For engineers reviewing the AH1807-Z-7 datasheet, AH1807-Z-7 pinout, AH1807-Z-7 application, or AH1807-Z-7 equivalent, this device is selected for low-power, high-temperature industrial sensing where magnetic polarity independence, chopper-stabilized drift control, and ESD robustness (6 kV HBM) are critical.
Technical Context
The AH1807-Z-7 integrates dual Hall plates and chopper-stabilized amplification to cancel offset drift across temperature, delivering ±15 Gauss operate point stability from −40°C to +125°C. Its sleep/awake duty cycle (0.1% typical) and 75–125 µs awake time enable ultra-low power operation in battery-powered metering systems.
It features a single open-drain output with 0.1 V typical on-state voltage at 1 mA sink, 0.1 µA max leakage when off, and guaranteed hysteresis of 10–20 Gauss-ensuring noise-immune switching in proximity and position-sensing applications without external debouncing.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage | 2.5 V to 5.5 V - supports direct connection to Li-ion, coin cell, or 3.3 V/5 V system rails without regulation. |
| Avg. Supply Current | 8–16 µA @ 3 V, 25°C - enables >10-year battery life in smart meter tamper detection circuits. |
| Operate Point (Bop) | ±60–105 Gauss - medium sensitivity allows reliable actuation with small, low-cost magnets at air gaps up to 3 mm. |
| Hysteresis (Bhy) | 10–20 Gauss - prevents chatter near threshold in vibrating or noisy mechanical environments. |
| Output Type | Open-drain, 2.5 mA sink capability - interfaces directly with microcontroller GPIO or pull-up resistor (10–100 kΩ). |
| Operating Temp. | −40°C to +125°C - qualified for outdoor smart meter enclosures and industrial control panels. |
| ESD Rating | 6 kV HBM - withstands handling and field-level electrostatic discharge without protection circuitry. |
Pinout & Package
Package: SOT553 - 1.6 mm × 1.6 mm × 0.6 mm low-profile surface-mount package with exposed thermal pad (not electrically connected). Optimized for space-constrained PCB layouts in metering and appliance modules.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | NC (No Connection) | Internally unconnected; may be left floating or tied to GND for mechanical stability. |
| 2 | GND | Ground reference for Hall sensor, amplifier, and output driver; must be low-impedance return path. |
| 3 | NC (No Connection) | Internally unconnected; no electrical function; avoid routing signals underneath. |
| 4 | VDD | Power input; requires 10–100 nF bypass capacitor close to pin for noise immunity and stable wake-up timing. |
| 5 | OUTPUT | Open-drain output; sinks current when active; requires external pull-up to VDD or logic rail. |
Key Features
| Feature | Design Value |
|---|---|
| Omnipolar magnetic activation | Responds identically to North or South pole - eliminates magnet orientation constraints during assembly and field maintenance. |
| Chopper-stabilized architecture | Reduces offset drift to <±0.5 mV/°C - maintains consistent Bop/Brp over full temperature range without calibration. |
| Micropower sleep mode | 5–28 µA IDD(sleep) - extends battery life in always-on tamper-detect circuits by minimizing quiescent draw between sampling cycles. |
| RF noise immunity | Validated against common industrial RF sources - avoids false triggers in motor-driven appliances or wireless communication zones. |
| High-temperature reliability | 125°C junction-rated design - sustains performance in sealed meter housings exposed to solar loading or transformer heat. |
Applications
| Smart Electricity Meters | Tamper Protection Switch |
|---|---|
|
Use Scenario: Detect unauthorized opening of meter enclosure using embedded magnet and reed-switch replacement. IC Role / Device Role / Timing Role: Hall switch providing digital tamper flag to meter MCU via open-drain interrupt line. Use Value: Omnipolar operation ensures reliable detection regardless of magnet polarity orientation during field installation or replacement. |
Use Scenario: Monitor cover integrity in industrial control panels or utility distribution boxes. IC Role / Device Role / Timing Role: Low-power magnetic presence detector triggering alarm or log event upon lid removal. Use Value: 8–16 µA average current enables multi-year operation on primary lithium batteries without service interruption. |
| Door/Lid Position Sensing | Proximity-Based On/Off Control |
|
Use Scenario: Confirm closed state of refrigerator doors, washing machine lids, or HVAC access panels. IC Role / Device Role / Timing Role: Contactless position switch replacing mechanical microswitches subject to wear and contamination. Use Value: −40°C to +125°C rating ensures consistent operation in freezer compartments and hot appliance cavities. |
Use Scenario: Enable/disable subsystems (e.g., display backlight, fan) based on user proximity in smart appliances. IC Role / Device Role / Timing Role: Ultra-low-power Hall sensor driving wake-up signal to main controller in sleep-mode systems. Use Value: 75–125 µs awake time and 0.1% duty cycle minimize latency while preserving energy budget in battery-operated UIs. |
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 |
|---|---|---|---|
| AL33035EUA-7 | Higher sensitivity (Bop ±35 G), lower supply current (3 µA avg), but narrower voltage range (1.65–3.6 V). | Requires 3.3 V rail only; unsuitable for 5 V systems or wide-input battery designs. | Select when operating exclusively from regulated 3.3 V and maximum sensitivity is required at minimal current. |
| DRV5013AGQLPGM | Higher output drive (20 mA), ratiometric analog output option, but higher quiescent current (3.5 mA awake). | Designed for analog feedback loops or high-current load switching-not optimized for ultra-low-power wake-up events. | Select when interfacing with analog ADC inputs or driving LEDs/relays directly without external drivers. |
Compared with AL33035EUA-7 and DRV5013AGQLPGM, the AH1807-Z-7 uniquely balances medium sensitivity, 2.5–5.5 V flexibility, and sub-10 µA average consumption-making it optimal for cost-sensitive, wide-voltage, long-life metering and industrial position sensing.
Availability
AH1807-Z-7 is available at Aetrix Electronics and suitable for smart meter tamper detection, industrial door position monitoring, and battery-powered proximity sensing requiring stable component supply across automotive-grade temperature ranges and multi-year field deployments.
Supply support for AH1807-Z-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 integrated circuits, specializing in high-reliability power management, signal integrity, and sensing solutions for industrial and consumer markets.
The AH1807 belongs to Diodes' Hall-effect switch product line, engineered specifically for ultra-low-power, high-temperature magnetic sensing in utility metering, home appliances, and factory automation equipment.
FAQ
What is the minimum magnetic field strength required to activate the AH1807-Z-7?
The AH1807-Z-7 activates at a magnetic flux density exceeding ±60 Gauss (typical 80 G) at 25°C, with full specification down to ±50 Gauss over −40°C to +125°C. This corresponds to a 3 mm air gap with a standard N35 neodymium magnet (5 mm × 2 mm), enabling reliable detection without precision magnet placement.
Can the AH1807-Z-7 operate directly from a 5 V supply without regulation?
Yes-the AH1807-Z-7 is fully specified for 2.5 V to 5.5 V operation and tolerates transient spikes up to 7 V. No external regulator is needed when powered from standard 5 V rails, and its chopper-stabilized design maintains consistent switching thresholds across the entire voltage range.
Is an external capacitor required on the VDD pin?
Yes-a 10 nF to 100 nF ceramic capacitor is recommended between VDD and GND, placed within 2 mm of the pin. This stabilizes internal power domains during wake-up transitions and improves immunity to conducted RF noise, especially in motor-driven or switching-power environments.
How does the AH1807-Z-7 handle mechanical vibration in industrial applications?
The device's 10–20 Gauss hysteresis and chopper-stabilized architecture prevent false triggering caused by vibration-induced magnetic field fluctuations. Combined with its −40°C to +125°C qualification and 6 kV ESD rating, it maintains reliable operation in panel-mounted controls subject to shock, vibration, and thermal cycling.
AH1807-Z-7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- *
- Package/Case:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Function:
- -
- Technology:
- -
- Polarization:
- -
- Sensing Range:
- -
- Test Condition:
- -
- Voltage - Supply:
- -
- Current - Supply (Max):
- -
- Current - Output (Max):
- -
- Output Type:
- -
- Features:
- -
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- -
- Supplier Device Package:
- -
AH1807-Z-7 FAQ
1.How can I place an order for AH1807-Z-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for AH1807-Z-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-Z-7 reliable?
The price and inventory of AH1807-Z-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-Z-7 is usually 5 days.
3.What payment methods are accepted for AH1807-Z-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AH1807-Z-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AH1807-Z-7?
AH1807-Z-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AH1807-Z-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-Z-7?
For technical support, including AH1807-Z-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AH1807-Z-7 requirements.
6.How does Aetrix verify that AH1807-Z-7 is sourced from the original manufacturer or authorized distributors?
All AH1807-Z-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-Z-7 meets industry standards.
7.What is the process for return or replacement of AH1807-Z-7?
All AH1807-Z-7 units undergo pre-shipment inspection (PSI). If there is an issue with AH1807-Z-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-Z-7 part is unused and in its original packaging.
Return procedure for AH1807-Z-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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