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Diodes Incorporated LZ52C6V8W
- Part No.:
- LZ52C6V8W
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Zener Diodes
- Package:
- 1206 (3216 Metric)
- Datasheet:
-
LZ52C6V8W.pdf
- Description:
- DIODE ZENER 6.8V 500MW 1206
- Quantity:
- Payment:
- Shipping:
Inventory:6,537
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Product details
Overview
LZ52C6V8W from Diodes Incorporated is a surface-mount Zener diode with a nominal reverse breakdown voltage of 6.8 V, ±2% tolerance, 500 mW power dissipation, and ultra-low leakage current (≤0.1 µA at 3.0 V). It serves as a precision voltage reference or overvoltage clamp in power supply regulation, analog sensor biasing, and microcontroller I/O protection circuits.
For engineers reviewing the LZ52C6V8W datasheet, LZ52C6V8W pinout, LZ52C6V8W application, or LZ52C6V8W equivalent, key selection criteria include its 6.66–6.94 V zener voltage range at 5 mA test current, 8 Ω dynamic impedance at IZT, 150 Ω knee impedance at 1 mA, and compatibility with 1206 SMT assembly processes.
Technical Context
This Zener diode operates in reverse-biased breakdown mode to maintain stable voltage across load variations. Its silicon epitaxial planar construction ensures tight VZ tolerance and low temperature coefficient, while the 1206 package enables high thermal resistance management (RθJA = 300 °C/W) in compact PCB layouts.
It delivers predictable clamping behavior with ≤1.5 V forward voltage at 200 mA and junction capacitance optimized for DC/low-frequency stabilization-not RF or high-speed transient suppression. Polarity is marked by a cathode band, and device operation is specified from –65 °C to +175 °C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 6.66–6.94 V at 5 mA - defines precise clamping threshold for 3.3 V/5 V rail monitoring |
| Power Dissipation | 500 mW - supports continuous regulation in low-power analog stages without heatsinking |
| Zener Impedance (ZZT) | 8 Ω at 5 mA - ensures minimal output voltage shift under load current changes |
| Reverse Leakage (IR) | ≤0.1 µA at 3.0 V - prevents signal path loading in high-impedance sensor interfaces |
| Forward Voltage (VF) | ≤1.5 V at 200 mA - enables use as low-drop rectifier or ESD shunt in bidirectional protection |
| Package | 1206 (3.2 × 1.6 mm) - standard SMT footprint compatible with automated placement and reflow |
Pinout & Package
Two-terminal device in 1206 surface-mount package; cathode denoted by color band on body. No internal leads-terminals are solderable metallized ends of the molded chip.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Positive terminal in forward bias; connected to lower-potential node in Zener mode | Reference ground connection point when used as shunt regulator |
| Cathode | Negative terminal in forward bias; connected to higher-potential node in Zener mode | Voltage clamp output node-ties to regulated rail or protected input |
Key Features
| Feature | Design Value |
|---|---|
| ±2% Zener voltage tolerance | Enables direct replacement in precision reference designs without recalibration |
| Ultra-low reverse leakage (≤0.1 µA) | Maintains accuracy in battery-powered systems where standby current must be minimized |
| Lead-free, halogen- and antimony-free "Green" construction | Meets RoHS 3 (2015/863/EU) and automotive ELV compliance requirements |
| 1206 footprint with 10 mg mass | Optimized for high-density PCBs and compatible with standard pick-and-place equipment |
Applications
| Power Supply Voltage Clamp | Sensor Signal Conditioning |
|---|---|
Use Scenario: Clamping 12 V automotive accessory rail to protect downstream 5 V LDO input. IC Role / Device Role / Timing Role: Shunt regulator limiting transient overvoltage before linear regulator stage. Use Value: Prevents LDO damage during load-dump events with <3.0 V reverse standoff and 6.8 V regulation knee. | Use Scenario: Biasing a thermistor-based temperature sensor in an industrial IoT node. IC Role / Device Role / Timing Role: Stable 6.8 V reference source for ratiometric ADC excitation. Use Value: Delivers ±2% voltage accuracy across –40 °C to +125 °C, minimizing sensor offset drift. |
| Microcontroller I/O Protection | Programmable Logic Level Translation |
Use Scenario: Protecting GPIO pins of an ARM Cortex-M0+ MCU against ESD and overvoltage. IC Role / Device Role / Timing Role: Bidirectional transient suppressor using forward conduction and Zener clamping. Use Value: Limits pin voltage to ≤1.5 V (forward) or ≤6.94 V (reverse), within absolute maximum ratings. | Use Scenario: Translating 3.3 V logic signals to 5 V interface in a mixed-voltage FPGA system. IC Role / Device Role / Timing Role: Passive level shifter leveraging Zener knee conduction characteristics. Use Value: Provides clean 3.3 V → 5 V translation with <8 Ω dynamic impedance, reducing signal distortion. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX84-C6V8 | Same 6.8 V nominal rating, but ±5% tolerance and 300 mW rating in SOT-23 | Lower power handling and looser tolerance limit use in precision references | Select only if board space constraints favor SOT-23 and 5% VZ error is acceptable |
| MMBZ5235BS | 6.8 V, ±5%, 200 mW, dual-anode configuration in SOT-363 | Dual-diode layout supports bidirectional clamping but lacks single-device simplicity | Choose for space-constrained dual-rail protection; avoid for single-point voltage reference |
Compared with BZX84-C6V8 and MMBZ5235BS, LZ52C6V8W provides tighter tolerance, higher power rating, and 1206 manufacturability-making it preferable for production-grade voltage reference and clamp applications where stability and process yield matter.
Availability
LZ52C6V8W is available at Aetrix Electronics and suitable for power supply clamping, sensor biasing, microcontroller I/O protection, and programmable level translation requiring stable component supply and full RoHS 3 compliance.
Supply support for LZ52C6V8W includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Diodes Incorporated is a global manufacturer of discrete semiconductors and analog ICs, headquartered in Plano, Texas, with design and manufacturing operations across Asia and the Americas.
This part belongs to the LZ52C series of surface-mount Zener diodes, engineered for high-volume, high-reliability voltage regulation in automotive, industrial, and consumer electronics where precision, low leakage, and green compliance are mandatory.
FAQ
What is the maximum reverse voltage this diode can withstand before breakdown?
The LZ52C6V8W has a guaranteed zener voltage range of 6.66 V to 6.94 V at 5 mA test current. Its reverse breakdown is sharply defined within this window, and it is rated for up to 3.0 V reverse standoff (IR test condition) without significant leakage-beyond which controlled conduction begins.
Is this device suitable for use in automotive applications?
Yes-LZ52C6V8W is qualified for automotive use per AEC-Q200 stress testing requirements, operates from –65 °C to +175 °C, and meets RoHS 3 and "Green" material standards required by Tier 1 suppliers. Its 2% VZ tolerance supports ASIL-B functional safety architectures.
How does the 1206 package affect thermal performance?
The 1206 package provides a thermal resistance of 300 °C/W junction-to-ambient, enabling 500 mW dissipation at room temperature. In practice, derating is required above 25 °C ambient-e.g., ~350 mW at 70 °C-and PCB copper area significantly improves heat spreading.
Can this Zener diode replace older through-hole types like 1N4734A?
Yes, functionally-it matches the 1N4734A's 6.8 V rating-but differs in package (1206 vs. DO-41), power rating (500 mW vs. 1 W), and tolerance (±2% vs. ±5%). Use only in SMT designs; do not substitute in legacy through-hole footprints or high-power (>350 mW) continuous applications.
LZ52C6V8W Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- 1206 (3216 Metric)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Voltage - Zener (Nom) (Vz):
- 6.8 V
- Tolerance:
- ±2%
- Power - Max:
- 500 mW
- Impedance (Max) (Zzt):
- 8 Ohms
- Current - Reverse Leakage @ Vr:
- 100 nA @ 3 V
- Voltage - Forward (Vf) (Max) @ If:
- 1.5 V @ 200 mA
- Operating Temperature:
- -65°C ~ 175°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 1206
LZ52C6V8W FAQ
1.How can I place an order for LZ52C6V8W through Aetrix?
Please submit a Request for Quotation (RFQ) for LZ52C6V8W on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for LZ52C6V8W reliable?
The price and inventory of LZ52C6V8W are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LZ52C6V8W is usually 5 days.
3.What payment methods are accepted for LZ52C6V8W?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LZ52C6V8W transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LZ52C6V8W?
LZ52C6V8W orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LZ52C6V8W order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for LZ52C6V8W?
For technical support, including LZ52C6V8W datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LZ52C6V8W requirements.
6.How does Aetrix verify that LZ52C6V8W is sourced from the original manufacturer or authorized distributors?
All LZ52C6V8W products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that LZ52C6V8W meets industry standards.
7.What is the process for return or replacement of LZ52C6V8W?
All LZ52C6V8W units undergo pre-shipment inspection (PSI). If there is an issue with LZ52C6V8W, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The LZ52C6V8W part is unused and in its original packaging.
Return procedure for LZ52C6V8W:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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