6.8V 0.5W Zener Diode – Reliable Voltage Regulation

Description

Technical Overview of the 6.8V 0.5W Zener Diode

The 6.8V 0.5W Zener Diode is a highly stable silicon semiconductor designed for voltage regulation and signal conditioning. In the world of Zener diodes, the 6.8V threshold is mathematically significant because it sits at the crossover point between the Zener effect and the Avalanche effect. This results in exceptional temperature stability, making it a favorite for precision reference circuits. Housed in a compact DO-35 glass package, this 500mW (0.5 Watt) diode provides a reliable 6.8V clamp for various electronic assemblies. At BuyCircuitParts, we supply industrial-grade 6.8V 0.5W Zener Diode units to keep your analog and digital designs “on track.“

Key Specifications and Data Sheet Highlights

For precise integration into your electronic designs, here are the technical parameters of the 6.8V 0.5W Zener Diode:

• Zener Voltage ($V_z$): 6.8V (Nominal).

• Power Dissipation ($P_d$): 0.5 Watt (500mW).

• Tolerance: ±5% (Standard precision for C-series).

• Package Type: DO-35 (Hermetically sealed glass axial lead).

• Zener Impedance ($Z_{zt}$): ~5-8 Ohms (at 5mA).

• Reverse Leakage Current: < 3µA at 3.0V.

• Operating Temperature Range: -65°C to +175°C.

The Thermal Advantage of 6.8V Zeners

One of the primary reasons engineers choose the 6.8V 0.5W Zener Diode is its low temperature coefficient. While lower voltage Zeners (like 3.3V) have a negative temperature coefficient and higher voltage ones have a positive one, the 6.8V variant is nearly zero. This means that as the circuit warms up during operation, the 6.8V reference remains remarkably consistent. This makes it ideal for use in high-precision measurement equipment and stable power supplies. At BuyCircuitParts, our Zeners are sourced for their sharp “breakdown knee,” ensuring they transition to the conducting state with high accuracy.

Common Applications for the 6.8V 0.5W Zener Diode

The 6.8V 0.5W Zener Diode is a versatile tool used in numerous precision applications:

1. Stable Voltage References: Providing a temperature-independent 6.8V reference for Op-Amps and ADCs.

2. MOSFET Gate Protection: Clamping the gate-to-source voltage to a safe 6.8V level in low-voltage switching circuits.

3. Battery Level Indicators: Used as a reference point to trigger LEDs or alarms when battery voltage drops.

4. Signal Clipping: Trimming audio or sensor signals to prevent input stages from saturating above 6.8V.

5. Industrial Controls: Acting as a localized regulator for 24V DC lines that need a small, stable 6.8V sub-rail.

Pro-Tips for Circuit Integration

To ensure your 6.8V 0.5W Zener Diode operates with maximum reliability, follow these professional guidelines:

• Current Management: At 6.8V, the maximum safe current is roughly 73mA ($I = P/V$). For the best stability and lowest noise, target an operating current ($I_{zt}$) of 5mA to 15mA using a series resistor.

• Orientation: For regulation and clamping, the diode must be Reverse Biased. The Cathode (the end with the black stripe) should be connected to the more positive potential in the circuit.

• Lead Handling: The DO-35 glass package is delicate. When bending leads for through-hole assembly, avoid applying pressure directly against the glass body to prevent internal micro-cracks that can lead to failure over time.

• Noise Suppression: If used in sensitive analog audio circuits, place a 100nF ceramic capacitor in parallel with the Zener to filter out any “Zener noise” produced during the breakdown process.

Why Buy from BuyCircuitParts?

As a specialized seller, we know that inconsistent Zener voltages can ruin a calibrated circuit. At BuyCircuitParts, our 6.8V 0.5W Zener Diode stock is sourced from reputable manufacturers who adhere to strict tolerance standards. We provide diodes with clearly etched markings and high-purity tinned leads that ensure excellent solderability. With our fast shipping and technical focus, we help you build high-performance electronics and keep your project “on track.“

Durability and Long-Term Stability

The 6.8V 0.5W Zener Diode is built for longevity. Its hermetically sealed glass package prevents moisture and oxidation from affecting the internal silicon junction. This is particularly important for industrial control panels or automotive electronics where environmental factors are a concern. By choosing your semiconductors from BuyCircuitParts, you are building with professional-grade hardware designed for consistent performance over years of operation.

Approximate Dimensions:

Body Length: ~3.5 mm
Diameter: ~2 mm
Lead Pitch: ~25 mm

🧊 Note:
Product colour and markings may vary slightly based on manufacturer and batch. Functionality is guaranteed. (Refer to the product image for illustration only. For precise specifications, consult the datasheet.) For more details, check the Zener Diode Datasheet.

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