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Diodes Incorporated LZ52C16W
- Part No.:
- LZ52C16W
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Zener Diodes
- Package:
- 1206 (3216 Metric)
- Datasheet:
-
LZ52C16W.pdf
- Description:
- DIODE ZENER 16V 500MW 1206
- Quantity:
- Payment:
- Shipping:
Inventory:4,763
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Product details
Overview
LZ52C16W from Diodes Incorporated is a surface-mount Zener diode with nominal reverse breakdown voltage of 16 V (±2% tolerance), 500 mW power dissipation, and ultra-small 1206 package. It delivers stable voltage reference and overvoltage protection in low-power analog circuits, power supply feedback loops, and I/O clamp applications.
For engineers reviewing the LZ52C16W datasheet, LZ52C16W pinout, LZ52C16W application, or LZ52C16W equivalent, key selection criteria include Zener voltage accuracy (15.68–16.32 V at 5 mA), low leakage (<0.1 µA at 12 V), and thermal resistance (300 °C/W) for reliable operation in compact PCB layouts.
Technical Context
This Zener diode operates in reverse-bias breakdown mode to regulate or clamp voltage at precisely defined levels. Its silicon epitaxial planar construction ensures tight VZ tolerance (±2%) and low dynamic impedance (40 Ω at 5 mA, 170 Ω at 1 mA).
Designed for surface-mount assembly, it features a color-band cathode marking, lead-free plating, and halogen/antimony-free "Green" molding compound. Thermal performance is characterized by RθJA = 300 °C/W, supporting operation from –65 °C to +175 °C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 15.68–16.32 V at 5 mA - defines precise clamping/reference level in feedback or protection circuits |
| Power Dissipation (PTOT) | 500 mW - supports continuous regulation in low-current bias networks without heatsinking |
| Zener Impedance (ZZT) | 40 Ω at 5 mA - ensures minimal voltage deviation under load transients in reference paths |
| Reverse Leakage (IR) | <0.1 µA at 12 V - prevents signal path loading in high-impedance sensing or logic-level interfaces |
| Package | 1206 (3.2 × 1.6 mm) - enables automated placement and high-density routing on space-constrained boards |
| Operating Temperature | –65 °C to +175 °C - suitable for automotive under-hood and industrial control environments |
Pinout & Package
Package: 1206 surface-mount package with cathode indicated by color band; terminals are lead-free plated; weight ≈10 mg.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry / Reverse bias reference ground node | Connected to lower-potential side in clamp or shunt regulator configurations |
| Cathode | Forward current exit / Zener breakdown voltage output node | Marked with color band; connects to regulated or clamped voltage rail |
Key Features
| Feature | Design Value |
|---|---|
| ±2% Zener voltage tolerance | Enables accurate voltage referencing without post-production trimming in precision analog designs |
| Ultra-low reverse leakage | <0.1 µA at 12 V minimizes error current in high-impedance feedback networks |
| Lead-free and "Green" compliant | Meets RoHS 3 (2015/863/EU), <900 ppm Br/Cl, <1000 ppm Sb - supports eco-conscious manufacturing |
| Low thermal resistance | RθJA = 300 °C/W allows direct PCB copper pour use for thermal management in compact layouts |
Applications
| Power Supply Feedback | IO Voltage Clamping |
|---|---|
Use Scenario: Stabilizing output voltage in isolated DC-DC converters using optocoupler-coupled feedback. IC Role / Device Role / Timing Role: Shunt reference providing precise 16 V threshold to TL431-like control circuitry. Use Value: Tight ±2% VZ reduces output regulation error to <±0.3%, improving system accuracy. |
Use Scenario: Protecting microcontroller GPIO pins from ESD or transient overvoltage. IC Role / Device Role / Timing Role: Bidirectional clamp limiting input voltage to 16 V while blocking forward conduction. Use Value: Low leakage (<0.1 µA) avoids signal distortion; 1206 footprint fits near connectors without layout rework. |
| Sensor Signal Conditioning | Reference Voltage Generation |
Use Scenario: Biasing bridge-based pressure sensors in automotive cabin modules. IC Role / Device Role / Timing Role: Providing stable excitation voltage reference for ratiometric ADC measurements. Use Value: Stable VZ across –40 °C to +125 °C maintains sensor linearity within ±0.5% full-scale error. |
Use Scenario: Generating fixed 16 V reference for analog comparators in battery monitoring systems. IC Role / Device Role / Timing Role: Passive shunt reference replacing active regulators where low quiescent current is critical. Use Value: 500 mW rating supports up to 31 mA load current at 16 V, enabling multi-comparator sharing. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX84-C16 | Same 16 V nominal, ±5% tolerance, SOT-23 package, higher RθJA (450 °C/W) | Higher thermal resistance limits power handling in dense layouts; less precise voltage setting | Prefer when board space is constrained and ±5% tolerance is acceptable |
| MMSZ5245B | 16 V nominal, ±5% tolerance, SOD-123 package, 500 mW rating, 100 nA leakage at 12 V | Lower leakage improves high-Z circuit accuracy but lacks ±2% tolerance and 1206 mechanical robustness | Choose for ultra-low leakage needs where tighter VZ tolerance is secondary |
Compared with BZX84-C16 and MMSZ5245B, LZ52C16W offers superior voltage accuracy and thermal performance in a larger, more manufacturable 1206 footprint-ideal for cost-sensitive, high-volume industrial power supplies where precision and reliability outweigh miniaturization.
Availability
LZ52C16W is available at Aetrix Electronics and suitable for power supply feedback, IO voltage clamping, sensor signal conditioning, and reference voltage generation requiring stable component supply and RoHS-compliant sourcing.
Supply support for LZ52C16W 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, specializing in high-reliability, industry-standard components for power management, signal integrity, and protection.
LZ52C16W belongs to the LZ52C series of precision Zener diodes designed for stable voltage reference and overvoltage protection in automotive, industrial, and consumer power systems.
FAQ
What is the maximum reverse voltage this diode can withstand before breakdown?
The LZ52C16W has a nominal Zener voltage of 16 V with a guaranteed range of 15.68 V to 16.32 V at 5 mA test current. Breakdown occurs within this range under specified conditions; applying >16.32 V continuously may exceed safe operating area if power dissipation exceeds 500 mW.
Is this diode suitable for use in automotive under-hood applications?
Yes. The device is rated for junction temperatures from –65 °C to +175 °C and meets RoHS 3 and "Green" material requirements. Its 1206 package provides mechanical robustness and thermal stability suitable for engine control units and body electronics exposed to thermal cycling.
How does the ±2% tolerance affect circuit design compared to standard ±5% Zeners?
The tighter tolerance reduces initial calibration effort and improves system-level accuracy-e.g., in feedback loops, output regulation error drops from ±1.5% (±5% part) to ±0.3% (±2% part). This enables simpler compensation and fewer trim components in production.
Can LZ52C16W replace LZ52C15W or LZ52C18W in existing designs?
No direct substitution is recommended without circuit validation. While all share identical package and power rating, the 15 V and 18 V variants have different breakdown thresholds and impedance profiles. A 16 V reference change affects loop gain, stability margins, and clamping behavior in sensitive analog paths.
LZ52C16W 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):
- 16 V
- Tolerance:
- ±2%
- Power - Max:
- 500 mW
- Impedance (Max) (Zzt):
- 40 Ohms
- Current - Reverse Leakage @ Vr:
- 100 nA @ 12 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
LZ52C16W FAQ
1.How can I place an order for LZ52C16W through Aetrix?
Please submit a Request for Quotation (RFQ) for LZ52C16W 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 LZ52C16W reliable?
The price and inventory of LZ52C16W are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LZ52C16W is usually 5 days.
3.What payment methods are accepted for LZ52C16W?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LZ52C16W transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LZ52C16W?
LZ52C16W orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LZ52C16W 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 LZ52C16W?
For technical support, including LZ52C16W datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LZ52C16W requirements.
6.How does Aetrix verify that LZ52C16W is sourced from the original manufacturer or authorized distributors?
All LZ52C16W 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 LZ52C16W meets industry standards.
7.What is the process for return or replacement of LZ52C16W?
All LZ52C16W units undergo pre-shipment inspection (PSI). If there is an issue with LZ52C16W, 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 LZ52C16W part is unused and in its original packaging.
Return procedure for LZ52C16W:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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