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Silicon Labs SI7206-B-00-IV
- Part No.:
- SI7206-B-00-IV
- Manufacturer:
- Silicon Labs
- Category:
- Switches (Solid State)
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
SI7206-B-00-IV.pdf
- Description:
- MAGNETIC SWITCH LATCH SOT23-3
- Quantity:
- Payment:
- Shipping:
Inventory:2,780
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Product details
Overview
SI7206-B-00-IV from Silicon Labs is a high-voltage omnipolar latch Hall effect magnetic position sensor in a 3-pin SOT23 package, featuring ±1.0 mT typical operate/release points, open-drain output, 1000 Hz sample rate, and 3.3–26.5 V supply range - used for robust position sensing in automotive HVAC actuators and industrial motor commutation.
For engineers reviewing the SI7206-B-00-IV datasheet, SI7206-B-00-IV pinout, SI7206-B-00-IV application, or SI7206-B-00-IV equivalent, key selection criteria include its high-voltage operation, latch behavior with bipolar field response, low-power sleep mode, open-drain output drive capability, and -40°C to +125°C temperature grade.
Technical Context
The SI7206-B-00-IV implements a chopper-stabilized Hall element with 13-bit ADC and digital signal processing to compensate for temperature and offset drift. It operates as a latch: output remains latched high or low after crossing Bop/Brp thresholds until the opposite polarity field is applied.
It supports configurable idle timing and delivers 1000 Hz sampling at 950 µA typical current draw under VDD = 3.3–26.5 V. The device uses z-axis field detection (positive field defined as into bottom of SOT23) and provides factory-programmed magnetic thresholds without external calibration.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Operating Voltage | 3.3 V to 26.5 V - enables direct integration into 12 V/24 V automotive and industrial power rails without regulation. |
| Magnetic Operate Point (Bop) | ±0.5 mT min / ±1.0 mT typ / ±1.5 mT max - precise latch switching with immunity to weak stray fields. |
| Output Type | Open-drain - allows wired-OR logic, level shifting, and direct interface with microcontroller GPIO or pull-up networks. |
| Sample Rate | 1000 Hz - supports real-time position tracking in BLDC rotor commutation and fast mechanical actuation feedback. |
| Supply Current (Typ) | 950 µA at 1000 Hz - balances responsiveness and power efficiency for battery-backed or energy-conscious systems. |
| Temperature Range | -40°C to +125°C - qualified for under-hood automotive, industrial control, and harsh-environment applications. |
| Hysteresis | 1.9 mT - prevents chatter near threshold transitions in noisy magnetic environments. |
Pinout & Package
SI7206-B-00-IV is housed in a JEDEC MO-193 compliant 3-pin SOT23 surface-mount package (1.25 mm max height, 2.90 mm × 2.75 mm body). Pin 1 = VDD, Pin 2 = OUT1, Pin 3 = GND.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD (Pin 1) | Power supply input | Accepts 3.3–26.5 V; includes internal ESD protection and transient tolerance per ISO 7637-2 for automotive use. |
| OUT1 (Pin 2) | Open-drain latch output | Sinks up to 11.4 mA; requires external pull-up; asserts low on positive field, high on negative field (omnipolar latch behavior). |
| GND (Pin 3) | Reference ground | Common return path for analog sensing and digital output; must be low-impedance to ensure noise immunity and accurate field measurement. |
Key Features
| Feature | Design Value |
|---|---|
| Omnipolar latch operation | Responds to both north and south pole fields - eliminates magnet orientation dependency in mechanical assemblies. |
| Factory-programmed magnetic thresholds | No external resistor or configuration required - reduces BOM count and simplifies production calibration. |
| Digital temperature compensation | Flat tempco < ±0.05 %/°C over 0–70°C - maintains consistent Bop/Brp across operating range without analog trimming. |
| High-voltage tolerance | Withstands 40 V absolute max on VDD and output - supports direct connection to 24 V systems and EMC transients per ISO 7637-2. |
| Low-noise 13-bit ADC | RMS noise 30 µT at 5 V - enables sub-millitesla resolution for fine-position detection in precision knobs or fluid level sensors. |
Applications
| Automotive HVAC Actuators | Industrial BLDC Motor Commutation |
|---|---|
Use Scenario: Detecting rotary position of blend door actuators in climate control systems using small neodymium magnets mounted on gear shafts. IC Role / Device Role / Timing Role: Latch-based position feedback sensor providing discrete high/low state transitions synchronized to magnet pole passage. Use Value: Enables closed-loop actuator control with ±1.0 mT operate point tolerance, eliminating need for potentiometers or optical encoders in space-constrained duct modules. | Use Scenario: Sensing rotor position in 3-phase brushless DC motors for electronic commutation in pumps, fans, and compressors. IC Role / Device Role / Timing Role: Magnetic latch delivering synchronized edge-triggered signals to motor gate drivers for precise 120° electrical phase alignment. Use Value: Supports 1000 Hz sampling and 1.9 mT hysteresis to reject vibration-induced false triggers during high-speed rotation in industrial environments. |
| Security Door Lock Position | Industrial Fluid Level Detection |
Use Scenario: Monitoring bolt extension/retraction in electromechanical door locks to verify locked/unlocked status in access control panels. IC Role / Device Role / Timing Role: Omnipolar latch detecting presence of ferrous or magnetized strike plate - outputs stable state independent of magnet polarity. Use Value: Eliminates reed switch wear-out and provides ESD-hardened (8 kV HBM), high-voltage (26.5 V) operation suitable for unregulated 12 V lock solenoid supplies. | Use Scenario: Measuring liquid level in stainless steel tanks via float-mounted magnet moving past externally mounted SI7206-B-00-IV sensors. IC Role / Device Role / Timing Role: High-sensitivity magnetic latch detecting discrete fill-level thresholds through tank wall with air gap up to 3 mm. Use Value: Delivers reliable switching at ±1.0 mT with < ±3% sensitivity drift over temperature - enabling accurate multi-point level indication without contact or pressure sensing. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Hall effect latch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Melexis US1881EUA-ABA-000-RE | Unipolar latch, 3.0–24 V supply, TO-92 package, 3.5 mT Bop, no digital filtering | Limited to unipolar field detection; lacks temperature compensation and programmable sample rate | Select when cost-sensitive, low-complexity unipolar sensing suffices and TO-92 through-hole mounting is preferred. |
| Allegro A1220LUA-T | Bipolar latch, 3.0–24 V, 3-pin SOT23, 15 mT Bop, analog output, no ADC or DSP | Higher operate point reduces sensitivity; analog output requires external comparator and lacks built-in hysteresis | Choose for legacy designs requiring analog interface or where large air gaps (>5 mm) dominate magnet geometry constraints. |
Compared with US1881EUA-ABA-000-RE and A1220LUA-T, the SI7206-B-00-IV provides superior sensitivity (±1.0 mT vs ≥3.5 mT), integrated digital signal processing for drift compensation, and factory-configured 1000 Hz operation - making it optimal for high-accuracy, high-reliability latch applications in regulated 12/24 V systems.
Availability
SI7206-B-00-IV is available at Aetrix Electronics and suitable for automotive HVAC actuators, industrial BLDC motor commutation, security door lock position monitoring, and industrial fluid level detection requiring stable component supply across extended temperature and voltage ranges.
Supply support for SI7206-B-00-IV 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
Silicon Labs is a fabless semiconductor company specializing in mixed-signal ICs for sensing, timing, wireless, and security applications, with design centers across North America and Asia.
The Si720x family was engineered specifically for high-reliability magnetic position sensing in automotive, industrial, and consumer systems - emphasizing low power, high sensitivity, and robust EMC performance without external components.
FAQ
What is the magnetic operate point specification for SI7206-B-00-IV?
The SI7206-B-00-IV has a typical magnetic operate point (Bop) of ±1.0 mT, with minimum and maximum values of ±0.5 mT and ±1.5 mT respectively, over its full -40°C to +125°C operating range. This omnipolar latch behavior means it switches on either north or south pole approach, and the value reflects guaranteed switching thresholds under worst-case temperature and voltage conditions as specified in Table 5.2 of the datasheet.
Does SI7206-B-00-IV support sleep or low-power modes?
SI7206-B-00-IV does not include a dedicated disable (DIS) pin or hardware sleep mode - it is a 3-pin variant (VDD, OUT1, GND) without sleep control. Its 950 µA typical current draw at 1000 Hz represents continuous active operation. For ultra-low-power applications, engineers should consider 5-pin Si7204 variants with DIS pin support, as SI7206-B-00-IV is optimized for responsiveness over duty-cycled power savings.
What package type and dimensions does SI7206-B-00-IV use?
SI7206-B-00-IV uses a standard 3-pin SOT23 package conforming to JEDEC MO-193 Variation AB, with body dimensions of 2.90 mm × 2.75 mm and maximum height of 1.25 mm. Pin 1 is VDD, Pin 2 is open-drain OUT1, and Pin 3 is GND - matching the footprint and land pattern defined in Section 7.1 of the datasheet for automated PCB assembly.
Can SI7206-B-00-IV replace a reed switch in high-voltage applications?
Yes, SI7206-B-00-IV is explicitly designed as a solid-state replacement for reed switches in high-voltage applications, supporting 3.3–26.5 V operation and withstanding 40 V absolute maximum on VDD and output pins. Its 8 kV HBM ESD rating and ISO 7637-2 transient tolerance make it suitable for 24 V industrial controls and automotive subsystems where reed switches suffer from bounce, wear, and voltage limitations.
Is SI7206-B-00-IV recommended for new designs?
No - the official Silicon Labs datasheet (Rev. 1.7, May 2025) states "Not Recommended For New Designs" for the SI7206-B-00-IV, citing end-of-life status. While fully functional and supported for existing production, Aetrix Electronics advises new designs to evaluate Silicon Labs' next-generation Hall sensor families or consult our technical team for qualified drop-in alternatives with active product lifecycles.
SI7206-B-00-IV Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Silicon Labs
- Series:
- -
- Package/Case:
- TO-236-3, SC-59, SOT-23-3
- Packaging:
- Strip
- Product Status:
- Obsolete
- Function:
- Latch
- Technology:
- Hall Effect
- Polarization:
- North Pole, South Pole
- Sensing Range:
- 1.5mT Trip, -1.5mT Release
- Test Condition:
- -40°C ~ 125°C
- Voltage - Supply:
- 3.3V ~ 26.5V
- Current - Supply (Max):
- 950µA (Typ)
- Current - Output (Max):
- -
- Output Type:
- Open Drain
- Features:
- -
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-3
SI7206-B-00-IV FAQ
1.How can I place an order for SI7206-B-00-IV through Aetrix?
Please submit a Request for Quotation (RFQ) for SI7206-B-00-IV 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 SI7206-B-00-IV reliable?
The price and inventory of SI7206-B-00-IV are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SI7206-B-00-IV is usually 5 days.
3.What payment methods are accepted for SI7206-B-00-IV?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SI7206-B-00-IV transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SI7206-B-00-IV?
SI7206-B-00-IV orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SI7206-B-00-IV 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 SI7206-B-00-IV?
For technical support, including SI7206-B-00-IV datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SI7206-B-00-IV requirements.
6.How does Aetrix verify that SI7206-B-00-IV is sourced from the original manufacturer or authorized distributors?
All SI7206-B-00-IV 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 SI7206-B-00-IV meets industry standards.
7.What is the process for return or replacement of SI7206-B-00-IV?
All SI7206-B-00-IV units undergo pre-shipment inspection (PSI). If there is an issue with SI7206-B-00-IV, 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 SI7206-B-00-IV part is unused and in its original packaging.
Return procedure for SI7206-B-00-IV:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SI7206-B-00-IV Tags
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