Overview
The SZNUP3125WTT1G is a CAN Bus Protector designed by onsemi to provide robust protection for CAN transceivers in 24V systems. This device is engineered to safeguard against Electrostatic Discharge (ESD) and other harmful surge events, ensuring high reliability and compliance with stringent Electromagnetic Interference (EMI) requirements. It is packaged in a compact SC-70 (SOT-323) case, offering a cost-effective solution for system designers.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Peak Power Dissipation (8/20 μs Waveform) | 120 | W |
| Reverse Working Voltage (VRWM) | 32 | V |
| Breakdown Voltage (VBR) at IT = 1 mA | 35.6 - 39 | V |
| Reverse Leakage Current (IR) | < 100 | nA |
| Clamping Voltage (VC) at IPP = 1 A, 8/20 μs Waveform | 47 - 57 | V |
| Maximum Peak Pulse Current (IPP) 8/20 μs Waveform | 2.0 | A |
| Capacitance (CJ) at VR = 0 V, f = 1 MHz | 5.7 - 10 | pF |
| Operating Junction Temperature Range | -55 to 150 | °C |
| Storage Temperature Range | -55 to 150 | °C |
| Lead Solder Temperature (10 s) | 260 | °C |
| ESD Human Body Model (HBM) | 8.0 kV | |
| ESD Machine Model (MM) | 1.6 kV | |
| Package / Case | SC-70 (SOT-323) |
Key Features
- Bidirectional protection for each data line in a single compact SC-70 (SOT-323) package.
- Diode capacitance matching to ensure consistent performance.
- Low reverse leakage current (< 100 nA).
- Compliance with IEC standards: IEC 61000-4-2 (ESD), IEC 61000-4-4 (EFT), and IEC 61000-4-5 (Lightning).
- Flammability rating UL 94 V-0.
- AEC-Q101 qualified and PPAP capable.
- Pb-free, halogen-free/BFR-free, and RoHS compliant.
Applications
- Automotive Networks: CAN, CAN-FD, Low and High-Speed CAN, Fault Tolerant CAN, and truck systems.
- Industrial Control Networks: Smart Distribution Systems (SDS) and DeviceNet.
Q & A
- What is the primary function of the SZNUP3125WTT1G?
The primary function is to protect CAN transceivers in 24V systems from ESD and other harmful surge events.
- What is the peak power dissipation of the SZNUP3125WTT1G?
The peak power dissipation is 120 W for an 8/20 μs waveform.
- What is the reverse working voltage (VRWM) of the device?
The reverse working voltage (VRWM) is 32 V.
- What are the ESD protection levels of the SZNUP3125WTT1G?
The device complies with IEC 61000-4-2 (ESD) Level 4, IEC 61000-4-4 (EFT) 50 A – 5/50 ns, and IEC 61000-4-5 (Lightning) 2.0 A (8/20 μs).
- What is the operating junction temperature range of the device?
The operating junction temperature range is -55°C to 150°C.
- Is the SZNUP3125WTT1G RoHS compliant?
Yes, the device is Pb-free, halogen-free/BFR-free, and RoHS compliant.
- What are the typical applications of the SZNUP3125WTT1G?
Typical applications include automotive networks (CAN, CAN-FD, etc.) and industrial control networks (Smart Distribution Systems, DeviceNet).
- What is the package type of the SZNUP3125WTT1G?
The device is packaged in a SC-70 (SOT-323) case.
- Is the SZNUP3125WTT1G AEC-Q101 qualified?
Yes, the device is AEC-Q101 qualified and PPAP capable.
- What is the flammability rating of the SZNUP3125WTT1G?
The flammability rating is UL 94 V-0.
