Overview
The 1N5343B/TR12 is a 5-watt Zener diode from Microchip Technology, part of the JEDEC registered 1N5333B through 1N5388B series. This component is designed to provide voltage regulation over a broad range of operating currents and temperatures. It is available with various voltage tolerances, including plus/minus 10%, 5%, and 2%, making it versatile for different applications. The 1N5343B/TR12 is RoHS compliant, ensuring environmental sustainability.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Zener Voltage (VZ) | 7.5 | V |
| Test Current (IZT) | 175 | mA |
| Maximum Dynamic Impedance (ZZT) | 10 | Ohms |
| Maximum Reverse Current (IR) | 10 | µA |
| Maximum Regulator Current (IZM) | 500 | mA |
| Thermal Resistance Junction-to-Lead (RθJL) | 25 | °C/W |
| Thermal Resistance Junction-to-Ambient (RθJA) | 85 | °C/W |
| Off-State Power Dissipation @ 25°C (PD) | 5.0 | W |
| Forward Voltage @ 1.0 A (VF) | 1.2 | V |
| Solder Temperature @ 10 s (TSP) | 260 | °C |
| Junction and Storage Temperature (TJ and TSTG) | -65 to +150 | °C |
Key Features
- Wide selection of Zener voltages from 3.3 V to 200 V.
- Available with plus/minus 10%, 5%, and 2% voltage tolerances.
- RoHS compliant versions available.
- Regulates voltage over broad operating current and temperature ranges.
- Flexible axial-lead mounting terminals.
- Non-sensitive to ESD per MIL-STD-750 method 1020.
- Withstands high surge stresses.
- Minimal changes of voltage versus current.
- High specified maximum current (IZM) with adequate heat sinking.
- Moisture classification is “Level 1” per IPC/JEDEC J-STD-020B with no dry pack required.
Applications
The 1N5343B/TR12 Zener diode is suitable for various applications requiring voltage regulation, including:
- Voltage regulation in power supplies.
- Surge protection and voltage clamping.
- Audio and RF signal processing.
- Automotive and industrial control systems.
- General-purpose voltage stabilization.
Q & A
- What is the Zener voltage of the 1N5343B/TR12? The Zener voltage of the 1N5343B/TR12 is 7.5 V.
- What are the available voltage tolerances for this diode? The diode is available with plus/minus 10%, 5%, and 2% voltage tolerances.
- Is the 1N5343B/TR12 RoHS compliant? Yes, the 1N5343B/TR12 is RoHS compliant.
- What is the maximum power dissipation of the 1N5343B/TR12? The maximum power dissipation is 5.0 watts at 25°C.
- What is the thermal resistance junction-to-ambient of the 1N5343B/TR12? The thermal resistance junction-to-ambient is 85°C/W.
- How is the polarity of the diode indicated? The polarity of the diode is indicated by a band on the cathode end.
- What is the forward voltage at 1.0 A for the 1N5343B/TR12? The forward voltage at 1.0 A is 1.2 V.
- Is the 1N5343B/TR12 sensitive to ESD? No, the diode is non-sensitive to ESD per MIL-STD-750 method 1020.
- What is the maximum surge current the diode can handle? The diode can handle a maximum surge current as specified in the datasheet, typically for a non-repetitive half-sine wave of 8.3 ms duration.
- What are the typical applications of the 1N5343B/TR12? Typical applications include voltage regulation in power supplies, surge protection, audio and RF signal processing, and general-purpose voltage stabilization.
