Overview
The SMBJ170A-TR by STMicroelectronics is a Transient Voltage Suppressor (TVS) diode designed to protect electronic devices from high transient voltages. This unidirectional TVS diode is encapsulated in a plastic, ROHS compliant SMB (DO-214AA) package with 2 terminals. It features a peak pulse power dissipation of 600 W and a reverse standoff voltage of 170 V, with a clamping voltage of 275 V at 20.5 A. The device operates efficiently across a broad temperature range from -55 °C to 150 °C, ensuring reliability in varying environmental conditions.
Key Specifications
| Property | Value |
|---|---|
| Manufacturer | STMicroelectronics |
| Type of Diode | Transient Voltage Suppressor (TVS) |
| Polarity | Unidirectional |
| Peak Pulse Power Dissipation | 600 W |
| Maximum Reverse Stand-off Voltage | 170 V |
| Breakdown Voltage | 189 V (min) - 209 V (max) |
| Clamping Voltage | 275 V at 20.5 A |
| Maximum Peak Pulse Current | 11.3 A |
| Leakage Current | 1 µA |
| Operating Temperature Range | -55 °C to 150 °C |
| Package Type | DO-214AA (SMB) |
| Mounting Type | Surface Mount |
| Dimensions | 4.6 x 3.95 x 2.45 mm |
Key Features
- Excellent clamping capability and low incremental surge resistance.
- Typical leakage current less than 1 µA above 12 V.
- Designed for surface-mounted applications to optimize board space.
- Low profile package and robust moisture sensitivity level of 1.
- Compliant with RoHS but not with REACH regulation.
- ESD protection according to IEC 61000-4-2 and EFT protection according to IEC 61000-4-4.
Applications
- Telecommunications: Protects switches, routers, and modems from voltage spikes caused by lightning or other electrical faults.
- Consumer Electronics: Enhances the resistance of personal computers, laptops, and televisions against electrical transients.
- Industrial Automation: Guards machinery and control systems against severe electrical interferences.
- Automotive: Although not specifically designated for automotive standards, similar TVS diodes are used in vehicle electronic systems.
- Aerospace and Defense: Protects avionics and other electronic equipment in extreme conditions, though not specified for military standards).
- I/O Interfaces and VCC buses: Protects vulnerable circuits in various applications).
Q & A
- What is the primary function of the SMBJ170A-TR TVS diode?
The primary function is to protect electronic devices by clamping high transient voltages to a safe level).
- What is the peak pulse power dissipation of the SMBJ170A-TR?
The peak pulse power dissipation is 600 W).
- What is the reverse standoff voltage of the SMBJ170A-TR?
The reverse standoff voltage is 170 V).
- What is the clamping voltage of the SMBJ170A-TR at 20.5 A?
The clamping voltage is 275 V at 20.5 A).
- What is the operating temperature range of the SMBJ170A-TR?
The operating temperature range is from -55 °C to 150 °C).
- Is the SMBJ170A-TR RoHS compliant?
Yes, the SMBJ170A-TR is RoHS compliant).
- What type of package does the SMBJ170A-TR use?
The package type is DO-214AA (SMB)).
- What are some common applications of the SMBJ170A-TR?
Common applications include telecommunications, consumer electronics, industrial automation, and potentially automotive and aerospace sectors).
- What is the maximum peak pulse current of the SMBJ170A-TR?
The maximum peak pulse current is 11.3 A).
- What is the typical leakage current of the SMBJ170A-TR above 12 V?
The typical leakage current is less than 1 µA above 12 V).
