Product Overview
The 44E is a high-voltage, high-sensitivity unipolar Hall effect switch designed with bipolar semiconductor technology. It features a Hall voltage generator, a regulator for operation between 3.8V and 40V, temperature compensation, a small signal amplifier, a Schmitt trigger, and an open-collector output. This sensor is designed for south pole response, where the output is low when magnetic flux density (B) exceeds the operating point (Bop) and switches to high when B falls below the release point (Brp). Available in TO92S and SOT23-3L packages, both compliant with RoHS standards, the 44E is suitable for applications such as brushless motor commutation, flow sensors, position sensors, speed sensors, and distance sensors.
Product Attributes
- Brand: SLKormicro (implied from website URL)
- Certifications: RoHS compliant
Technical Specifications
General Features:
| Feature | Specification |
| Package Types | TO92S, SOT23-3L |
| Sensitivity (Typical) | 50/30 Gauss |
| Operating Voltage Range | 3.8 V to 40 V |
| ESD Performance | Up to 4 kV |
| Operating Temperature Range | -40 to 125 |
| Output Type | Open Collector |
Ordering Information:
| Part Number | Package | Packaging | Operating Environment (TA) |
| SL44E-9 | TO92S | 1000 / Bag | -40 to 125 |
| SL44E-3 | SOT23-3L | 3000 / Reel | -40 to 125 |
Absolute Maximum Ratings:
| Parameter | Symbol | Min | Max | Unit |
| Supply Voltage | VDD | -0.3 | 60 | V |
| Output Current | Isink | 0 | 40 | mA |
| Output Voltage | Vout | -0.5 | 60 | V |
| Operating Temperature | Ta | -40 | 125 | |
| Storage Temperature | Ts | -50 | 165 | |
Electrical Characteristics (Ta=25C, VSUP=5V):
| Parameter | Symbol | Min | Typical | Max | Unit |
| Supply Voltage | VSUP | 3.8 | - | 40 | V |
| Operating Current | ISUP | - | 6 | 9 | mA |
| Output Leakage Current | Ile | - | - | 10 | uA |
| Output Saturation Voltage | Vsat | - | - | 0.4 | V |
| Output Current Sink | Isink | - | - | 30 | mA |
| Rise Time | Tr | - | - | 1 | us |
| Fall Time | Tf | - | - | 1.5 | us |
Magnetic Characteristics (Ta=25C, VSUP=5V):
| Parameter | Symbol | Min | Typical | Max | Unit |
| Operating Point | Bop | 33 | 50 | 60 | Gauss |
| Release Point | Brp | 13 | 30 | 50 | Gauss |
| Hysteresis | Bthys | 10 | 20 | 40 | Gauss |
Pin Descriptions:
| Pin Number (TO92S) | Pin Number (SOT23-3L) | Name | Function |
| 1 | 1 | VSUP | Power Supply |
| 2 | 2 | GND | Ground |
| 3 | 3 | VOUT | Open Collector Output, requires pull-up resistor |
Typical Application Circuit Resistors:
| Component | Value (Application Circuit 1) | Value (Application Circuit 2) |
| RL | 4.7K | 4.7K |
| RV | - | 100 |
| CP | - | 4.7nF |
| CL | - | 1nF |
Package Dimensions:
TO92S:
| Symbol | Min | Typical | Max | Unit |
| A | 2.90 | 3.00 | 3.10 | mm |
| b | 0.35 | 0.39 | 0.40 | mm |
| b1 | 0.44 | - | - | mm |
| c | 0.36 | 0.38 | 0.40 | mm |
| D | 4.00 | 4.10 | 4.20 | mm |
| E | 1.42 | 1.52 | 1.62 | mm |
| E1 | 0.75 | - | - | mm |
| e | 1.27 | - | - | mm |
| e1 | 1.27 | - | - | mm |
| L | 2.54 | - | - | mm |
| L1 | 13.50 | 14.50 | 15.50 | mm |
| 1 | 6 | - | - | - |
| 2 | 3 | - | - | - |
| 3 | 45 | - | - | - |
| 4 | 3 | - | - | - |
| h | 3.6 | - | - | - |
SOT23-3L:
| Symbol | Min (mm) | Max (mm) | Min (inch) | Max (inch) |
| A | 1.05 | 1.25 | 0.041 | 0.049 |
| A1 | 0 | 0.1 | 0 | 0.004 |
| A2 | 1.05 | 1.15 | 0.041 | 0.045 |
| b | 0.3 | 0.5 | 0.012 | 0.02 |
| c | 0.100 | 0.2 | 0.004 | 0.008 |
| D | 2.82 | 3.02 | 0.111 | 0.119 |
| E | 1.5 | 1.7 | 0.059 | 0.067 |
| E1 | 2.65 | 2.95 | 0.104 | 0.116 |
| e | 0.950 TYP | - | 0.037 TYP | - |
| e1 | 1.8 | 2 | 0.071 | 0.079 |
| L | 0.3 | 0.6 | 0.012 | 0.024 |
| x | 1.460 TYP | - | 0.057 TYP | - |
| y | 0.800 TYP | - | 0.032 TYP | - |
| z | 0.600 TYP | - | 0.024 TYP | - |
| 0 | 8 | 0 | 8 |
Precautions:
- Hall sensors are sensitive devices; take electrostatic discharge (ESD) protection measures during handling and storage.
- Minimize mechanical stress on the device casing and leads during installation and use.
- Recommended soldering temperature should not exceed 350 and duration should not exceed 5 seconds.
- To ensure the safety and stability of the Hall chip, it is not recommended to operate beyond the specified parameters for extended periods.
2308281112_Slkor-SL44E-3_C5122582.pdf
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High voltage Hall effect sensor Slkor SL44E-3 with integrated regulator and temperature compensation Images
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