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Diodes Incorporated LZ52C36W
- Part No.:
- LZ52C36W
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Zener Diodes
- Package:
- 1206 (3216 Metric)
- Datasheet:
-
LZ52C36W.pdf
- Description:
- DIODE ZENER 36V 500MW 1206
- Quantity:
- Payment:
- Shipping:
Inventory:9,028
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Product details
Overview
LZ52C36W from Diodes Incorporated is a surface-mount Zener diode with a nominal reverse breakdown voltage of 36 V, ±2% tolerance, 500 mW power dissipation, and ultra-small 1206 package; it provides precise voltage regulation in low-power supply rails, overvoltage protection circuits, and reference voltage generation for industrial sensor interfaces and automotive body electronics.
For engineers reviewing the LZ52C36W datasheet, LZ52C36W pinout, LZ52C36W application, or LZ52C36W equivalent, key selection criteria include Zener voltage accuracy (35.28–36.72 V at 5 mA), low leakage current (≤0.1 µA at 27 V), thermal resistance (300 °C/W), and RoHS-compliant lead-free plating for high-reliability PCB assembly.
Technical Context
This Zener diode operates in reverse-biased breakdown mode to maintain stable voltage across its terminals under varying load conditions. It uses silicon epitaxial planar construction for tight VZ tolerance and low dynamic impedance (80 Ω at IZT = 5 mA).
Designed for surface-mount applications, it features a color-band cathode marking, green molding compound (Br/Cl/Sb-free), and a maximum junction temperature of +175 °C - enabling use in thermally constrained environments without derating below ambient.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 35.28–36.72 V at IZT = 5 mA - ensures ±2% regulation accuracy for precision reference designs |
| Power Dissipation (PTOT) | 500 mW at TA = 25 °C - supports continuous operation in compact 1206 footprint without forced cooling |
| Zener Impedance (ZZT) | 80 Ω at IZT = 5 mA - minimizes output voltage variation under dynamic load transients |
| Reverse Leakage (IR) | ≤0.1 µA at VR = 27 V - enables low-quiescent-current biasing in battery-powered systems |
| Thermal Resistance (RθJA) | 300 °C/W - defines junction-to-ambient temperature rise per watt, critical for thermal margin calculation |
| Operating Temperature | −65 to +175 °C - qualifies for under-hood automotive and industrial control cabinet deployments |
Pinout & Package
Package: 1206 surface-mount ceramic-body package (2.2 mm × 1.0 mm × 1.0 mm max); polarity indicated by cathode band; lead-free matte tin plating; weight ≈10 mg.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal / Zener reference ground node | Connected to system ground or lower-potential rail during regulation; forms return path for Zener current |
| Cathode | Reverse-bias input / regulated output node | Connected to unregulated input; voltage at this terminal clamps to VZ when reverse current ≥5 mA |
Key Features
| Feature | Design Value |
|---|---|
| ±2% Zener voltage tolerance | Enables direct replacement in 36 V reference designs without recalibration or resistor trimming |
| Ultra-low reverse leakage (≤0.1 µA) | Reduces standby power loss in always-on monitoring circuits and energy-harvesting nodes |
| Green compound packaging (Br/Cl/Sb-free) | Meets IPC-1752A Class 3 material declarations and EU ELV Directive compliance requirements |
| 1206 footprint compatibility | Supports automated placement with standard SMT pick-and-place equipment and reflow profiles |
Applications
| Industrial Sensor Reference | Automotive Body Control Module |
|---|---|
Use Scenario: Providing stable 36 V reference for analog front-end conditioning of pressure and temperature sensors in factory automation PLCs. IC Role / Device Role / Timing Role: Zener voltage reference element establishing precision bias point for op-amp gain stages and ADC reference dividers. Use Value: Tight ±2% VZ tolerance eliminates need for post-calibration trim resistors, reducing BOM count and test time. |
Use Scenario: Overvoltage clamp on 12 V battery-supplied microcontroller I/O lines exposed to load-dump transients up to 36 V. IC Role / Device Role / Timing Role: Transient voltage suppression device shunting excess energy to ground during ISO 7637-2 Pulse 5a events. Use Value: 500 mW rating and 300 °C/W RθJA allow sustained clamping without thermal runaway in sealed BCM enclosures. |
| Low-Power IoT Node Regulator | Medical Instrument Power Sequencing |
Use Scenario: Generating clean 36 V bias for photodiode transimpedance amplifiers in portable pulse oximeters. IC Role / Device Role / Timing Role: Low-noise voltage reference source stabilizing feedback loop of high-gain current-to-voltage converter. Use Value: 80 Ω ZZT and ≤0.1 µA IR minimize signal offset drift and dark-current error in sub-µA measurement ranges. |
Use Scenario: Enabling controlled power-up sequencing of dual-rail analog subsystems (±18 V) in diagnostic ultrasound beamformers. IC Role / Device Role / Timing Role: Precision voltage threshold detector triggering enable signals when main supply reaches 36 V nominal. Use Value: Consistent 35.28–36.72 V breakdown window ensures deterministic turn-on timing across −40 to +85 °C operating range. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener voltage regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX84-C36 | Same 36 V nominal, but ±5% tolerance (34.2–37.8 V); SOT-23 package; higher ZZT = 100 Ω | Less suitable for precision references; better for general-purpose clamping where size is critical | Select if board space is constrained and ±5% VZ is acceptable |
| MMBZ5241BLT1G | 36 V nominal, ±5% tolerance; SOT-23; 225 mW PTOT; RθJA = 357 °C/W | Lower power handling limits use in sustained-clamp scenarios; requires larger thermal pad for same dissipation | Prefer only for low-duty-cycle transient suppression in space-limited consumer devices |
Compared with BZX84-C36 and MMBZ5241BLT1G, LZ52C36W delivers tighter voltage accuracy, higher power capability, and superior thermal performance in the standardized 1206 footprint - making it optimal for industrial and automotive applications demanding long-term stability and manufacturability.
Availability
LZ52C36W is available at Aetrix Electronics and suitable for industrial sensor reference, automotive body control module protection, and low-power IoT node regulation requiring stable component supply and full traceability.
Supply support for LZ52C36W 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, manufacturing, and sales operations across Asia, Europe, and North America.
The LZ52C series belongs to Diodes' surface-mount Zener diode product line, engineered specifically for high-accuracy, low-leakage voltage regulation in space-constrained, high-reliability applications across automotive, industrial, and medical markets.
FAQ
What is the maximum reverse voltage that LZ52C36W can withstand before breakdown?
LZ52C36W has a specified Zener voltage range of 35.28 V to 36.72 V at 5 mA test current. Its guaranteed breakdown occurs within this window; operation above 36.72 V risks exceeding rated power dissipation unless current is strictly limited by external series resistance.
Does LZ52C36W require a heatsink in standard 1206 PCB layouts?
No heatsink is required. With RθJA = 300 °C/W and PTOT = 500 mW, junction temperature rise is 150 °C above ambient at full power - acceptable within its −65 to +175 °C operating range when mounted on standard FR-4 with recommended pad layout per DS45096.
Is LZ52C36W suitable for use in automotive applications?
Yes. It meets AEC-Q200 stress test requirements for passive components, operates from −65 to +175 °C, and is RoHS- and halogen-free - qualifying it for non-safety-critical automotive functions including body control modules, lighting drivers, and sensor interface circuits.
How does the ±2% tolerance affect circuit design compared to standard ±5% Zeners?
The ±2% tolerance reduces initial calibration effort and improves batch-to-batch consistency in voltage-sensitive circuits like ADC references and analog comparators - eliminating need for post-production trimming and supporting tighter overall system accuracy budgets without added components.
LZ52C36W 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):
- 36 V
- Tolerance:
- ±2%
- Power - Max:
- 500 mW
- Impedance (Max) (Zzt):
- 80 Ohms
- Current - Reverse Leakage @ Vr:
- 100 nA @ 27 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
LZ52C36W FAQ
1.How can I place an order for LZ52C36W through Aetrix?
Please submit a Request for Quotation (RFQ) for LZ52C36W 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 LZ52C36W reliable?
The price and inventory of LZ52C36W are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LZ52C36W is usually 5 days.
3.What payment methods are accepted for LZ52C36W?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LZ52C36W transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LZ52C36W?
LZ52C36W orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LZ52C36W 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 LZ52C36W?
For technical support, including LZ52C36W datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LZ52C36W requirements.
6.How does Aetrix verify that LZ52C36W is sourced from the original manufacturer or authorized distributors?
All LZ52C36W 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 LZ52C36W meets industry standards.
7.What is the process for return or replacement of LZ52C36W?
All LZ52C36W units undergo pre-shipment inspection (PSI). If there is an issue with LZ52C36W, 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 LZ52C36W part is unused and in its original packaging.
Return procedure for LZ52C36W:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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