Overview
The SMAJ85CA-TR is a Transient Voltage Suppressor (TVS) diode manufactured by STMicroelectronics. It is designed to protect sensitive electronic equipment from electrostatic discharges (ESD) and electrical overstress (EOS) according to various international standards, including IEC 61000-4-2, IEC 61000-4-4, and MIL STD 883, method 3015. This component is suitable for general-purpose applications and is particularly useful in surface-mounted configurations to optimize board space.
Key Specifications
| Property | Value |
|---|---|
| VR (Vso) | 85 V |
| Watts (W) | 400 W |
| IPP 10x1000µs (A) | 2.9 A |
| MIN VBR@IT (V) | 94.4 V |
| MAX VBR@IT (V) | 104 V |
| Vc (V) | 137 V |
| IT (mA) | 1 mA |
| Ir@Vr (µA) | 1 µA |
| Operating Temperature Max (°C) | 150 °C |
| Polarity | Bipolar |
| Package | DO-214AC (SMA) |
| Peak Pulse Power - 10x1000 (W) | 400 W |
Key Features
- Halogen-free and RoHS compliant.
- Designed for surface-mounted applications to optimize board space.
- Low profile package with built-in strain relief.
- Glass passivated junction for enhanced reliability.
- Low inductance.
- Excellent clamping capability.
- Fast response time: typically less than 1.0 ps from 0 Volts to V(BR) for unidirectional types.
- Typical IR less than 1 mA above 10 V.
Applications
The SMAJ85CA-TR is commonly used in various electronic systems that require protection against transient voltages and electrostatic discharges. These include but are not limited to:
- Automotive electronics.
- Industrial control systems.
- Consumer electronics.
- Telecommunication equipment.
- Medical devices.
Q & A
- What is the primary function of the SMAJ85CA-TR TVS diode?
The primary function of the SMAJ85CA-TR is to protect sensitive electronic equipment from transient voltages and electrostatic discharges. - What are the key standards this component complies with?
The SMAJ85CA-TR complies with IEC 61000-4-2, IEC 61000-4-4, and MIL STD 883, method 3015. - What is the maximum clamping voltage of the SMAJ85CA-TR?
The maximum clamping voltage is 178 V. - What is the peak pulse current rating of the SMAJ85CA-TR?
The peak pulse current rating is 2.9 A for a 10x1000µs pulse. - What is the operating temperature range of the SMAJ85CA-TR?
The maximum operating temperature is 150 °C. - Is the SMAJ85CA-TR RoHS compliant?
Yes, the SMAJ85CA-TR is RoHS compliant and halogen-free. - What package type does the SMAJ85CA-TR use?
The SMAJ85CA-TR uses the DO-214AC (SMA) package. - What are some common applications of the SMAJ85CA-TR?
Common applications include automotive electronics, industrial control systems, consumer electronics, telecommunication equipment, and medical devices. - Does the SMAJ85CA-TR have built-in strain relief?
Yes, the SMAJ85CA-TR has built-in strain relief. - What is the typical response time of the SMAJ85CA-TR?
The typical response time is less than 1.0 ps from 0 Volts to V(BR) for unidirectional types.
