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ZY6.8
Diotec Semiconductor
ZENERDIODE,DO-41,6.8V,2W,5%
3397 Pcs New Original In Stock
Zener Diode 6.8 V 2 W ±5% Through Hole DO-41/DO-204AC
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5.0 / 5.0
- (398 Ratings)
ZY6.8
Product Overview
12944488
DiGi Electronics Part Number
ZY6.8-DGManufacturer
Diotec Semiconductor
ZY6.8
Description
ZENERDIODE,DO-41,6.8V,2W,5%Inventory
3397 Pcs New Original In Stock
Zener Diode 6.8 V 2 W ±5% Through Hole DO-41/DO-204AC
Quantity
Minimum 1
Minimum 1
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ZY6.8 Technical Specifications
Category
Diodes, Zener, Single Zener Diodes
Packaging
Strip
Series
-
Product Status
Active
Voltage - Zener (Nom) (Vz)
6.8 V
Tolerance
±5%
Power - Max
2 W
Impedance (Max) (Zzt)
1 Ohms
Current - Reverse Leakage @ Vr
1 µA @ 2 V
Operating Temperature
-50°C ~ 150°C (TJ)
Mounting Type
Through Hole
Package / Case
DO-204AC, DO-41, Axial
Supplier Device Package
DO-41/DO-204AC
Datasheet & Documents
Datasheets
Download ZY6.8 Product Specification (PDF)
HTML Datasheet
ZY6.8-DG
Environmental & Export Classification
RoHS Status
ROHS3 Compliant
Additional Information
Other Names
2721-ZY6.8
Standard Package
30
Reviews
5.0/5.0-(Show up to 5 Ratings)
Dec 02, 2025
Der technische Support hat mir bei einem Problem sofort weitergeholfen, was meine Zufriedenheit stark erhöht hat.
Dec 02, 2025
Their packaging is a perfect blend of function and artistry, elevating the consumer experience.
Dec 02, 2025
Shipping packaging was so sturdy that it prevented any potential damage.
Dec 02, 2025
It's great to see a company prioritize environmentally friendly packaging.
Dec 02, 2025
The product quality and pricing make them a leader in the industry.
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Frequently Asked Questions (FAQ)
Can the ZY6.8 Zener diode from Diotec Semiconductor safely replace a BZX84-C6V8 in a 5V linear regulator circuit, and what are the key electrical trade-offs I should evaluate?
While both the ZY6.8 (6.8V, ±5%) and BZX84-C6V8 (6.8V, ±5%) share similar nominal Zener voltages, the ZY6.8 is rated for 2W continuous power dissipation in a DO-41 package, whereas the BZX84-C6V8 is typically limited to 350mW in an SOT-23 package. This makes the ZY6.8 suitable for higher-current applications like shunt regulation or overvoltage protection where thermal headroom is critical. However, its larger parasitic capacitance and slower response time may affect performance in high-speed or precision reference circuits. For 5V rail regulation with moderate load currents (<100mA), the ZY6.8 can be a robust drop-in replacement if board space allows, but ensure your input voltage and series resistor are sized to keep power dissipation within safe limits—especially under worst-case load conditions.
What thermal management considerations should I account for when using the ZY6.8 in a high-ambient-temperature environment near its 150°C TJ limit?
The ZY6.8’s maximum junction temperature of 150°C allows operation in harsh environments, but real-world reliability depends heavily on PCB layout and airflow. At 2W dissipation, even with a modest thermal resistance (θJA ≈ 50°C/W for typical axial mounting), ambient temperatures above 85°C can push the junction close to its limit. To mitigate risk, mount the ZY6.8 vertically to improve convective cooling, maintain clearance from heat-sensitive components, and consider adding a small heatsink or thermal via array if enclosed. Always derate power linearly above 70°C ambient—never exceed 1.2W above 100°C—to preserve long-term stability and prevent Zener voltage drift due to thermal stress.
Is the ZY6.8 suitable for reverse polarity protection in a 12V automotive system, and how does its leakage current compare to alternatives like the 1N5342B?
The ZY6.8 can be used in reverse polarity protection by placing it in parallel with the load (cathode to ground), clamping reverse voltage to ~6.8V. However, its 1 µA leakage at 2V reverse bias is acceptable for low-power systems but may cause unintended drain in always-on automotive modules. Compared to the 1N5342B (also 6.8V, 5W, DO-41), the ZY6.8 has lower power handling (2W vs. 5W) and higher relative leakage under full reverse bias. For 12V automotive use, ensure the series current-limiting resistor is sized to handle worst-case reverse battery scenarios (e.g., -14V for 1 minute per ISO 16750-2). The ZY6.8 is viable for non-safety-critical applications, but consider higher-wattage diodes like the 1N5342B or TVS diodes (e.g., SMAJ5.0A) for enhanced surge robustness.
How does the ZY6.8’s dynamic impedance (1Ω max) impact its performance as a voltage reference in a low-noise analog front-end, compared to precision references like the LM4040-6.8?
With a dynamic impedance of just 1Ω max, the ZY6.8 offers decent load regulation for general-purpose clamping or biasing, but it’s not ideal as a primary voltage reference in low-noise analog circuits. Unlike the LM4040-6.8—a bandgap reference with <0.1Ω output impedance, ±0.1% initial accuracy, and low temperature drift—the ZY6.8 exhibits significant voltage variation with current changes and is sensitive to temperature (typical TC ~ +2mV/°C near 6.8V). In sensitive applications like ADC references or sensor biasing, the ZY6.8 may introduce unacceptable noise and drift. Use it only for coarse regulation or transient suppression; for precision, pair it with an op-amp buffer or choose a dedicated reference IC, accepting the added cost and complexity for stability.
What failure modes should I anticipate if the ZY6.8 is subjected to repetitive current surges beyond its 2W rating in a crowbar circuit design?
In crowbar overvoltage protection circuits, the ZY6.8 may experience repeated short-duration surges that exceed its 2W average rating—even if peak power seems manageable. DO-41 packages have limited thermal mass, so frequent triggering can cause cumulative heating, leading to Zener voltage shift, increased leakage, or eventual thermal runaway. Unlike avalanche-rated TVS diodes (e.g., P6KE6.8A), the ZY6.8 isn’t optimized for repetitive surge energy absorption. To prevent premature failure, limit surge duty cycle to <1%, include a fast-acting fuse upstream, and verify that total I²t energy per event stays below the diode’s surge capability (typically ~10× rated power for 8/20µs pulses). For mission-critical crowbar designs, consider replacing the ZY6.8 with a dedicated thyristor-based solution or a high-surge Zener like the 1N5913B (3W, DO-41) for better ruggedness.
Quality Assurance (QC)
DiGi ensures the quality and authenticity of every electronic component through professional inspections and batch sampling, guaranteeing reliable sourcing, stable performance, and compliance with technical specifications, helping customers reduce supply chain risks and confidently use components in production.
ZY6.8 CAD Models
Diotec Semiconductor ZY6.8 PCB symbols & footprints
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