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Diodes Incorporated BZT52C36-13
- Part No.:
- BZT52C36-13
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Zener Diodes
- Package:
- SOD-123
- Datasheet:
-
BZT52C36-13.pdf
- Description:
- DIODE ZENER 36V 500MW SOD123
- Quantity:
- Payment:
- Shipping:
Inventory:8,667
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Product details
Overview
BZT52C36-13 from Diodes Incorporated is a surface-mount 36 V ±5.6% Zener diode in SOD123 package, rated for 500 mW peak power dissipation at TL = +75°C and 370 mW at TA = +25°C, with 90 Ω maximum Zener impedance at 2 mA test current, used for precision voltage regulation and overvoltage protection in DC power rails and sensor biasing circuits.
For engineers reviewing the BZT52C36-13 datasheet, BZT52C36-13 pinout, BZT52C36-13 application, or BZT52C36-13 equivalent, key selection criteria include nominal Zener voltage (36 V), tolerance (±5.6%), Zener impedance (90 Ω @ 2 mA), reverse leakage (0.1 µA @ 27.4 V), and thermal resistance (338 °C/W junction-to-ambient).
Technical Context
This Zener diode operates in reverse breakdown mode to maintain stable reference voltage under varying load and temperature conditions. Its planar die construction ensures consistent voltage regulation, while the SOD123 package supports automated assembly and provides defined thermal performance on FR-4 PCBs with 1-inch copper pad layout.
The device exhibits a negative temperature coefficient of –3.5 mV/°C below 6 V and transitions toward zero near 36 V; its 0.1 µA reverse leakage at VR = 27.4 V enables low-power standby regulation, and its 90 Ω dynamic impedance at IZT = 2 mA supports stable output under moderate current transients.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 36 V nominal, 34–38 V range at 2 mA - defines regulated rail voltage tolerance |
| Zener Impedance (ZZT) | 90 Ω max @ 2 mA - limits output voltage deviation under load changes |
| Power Dissipation (PD) | 370 mW @ TA = +25°C - sets maximum continuous power in ambient air |
| Reverse Leakage (IR) | 0.1 µA @ VR = 27.4 V - ensures minimal quiescent current in standby regulation |
| Thermal Resistance (RθJA) | 338 °C/W - determines junction temperature rise per watt on standard FR-4 layout |
| Package | SOD123 - surface-mount footprint compatible with reflow and wave soldering |
Pinout & Package
Two-terminal SOD123 package with cathode band marking; anode and cathode terminals are unidirectional, polarity-sensitive, and require correct orientation during placement for proper Zener conduction.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Reference node for reverse-biased operation | Connected to lower-potential side of regulated circuit; forms return path for Zener current |
| Cathode | Input node for reverse-biased operation | Connected to higher-potential side (e.g., supply rail); voltage drop across diode stabilizes at VZ |
Key Features
| Feature | Design Value |
|---|---|
| Planar die construction | Ensures tight VZ distribution and long-term stability under thermal cycling |
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling and HTRB |
| Lead-free & RoHS-compliant | Meets EU Directive 2011/65/EU with <900 ppm Br/Cl and <1000 ppm Sb |
| Moisture Sensitivity Level 1 | Zero bake requirement before reflow; safe for standard SMT handling |
Applications
| Industrial Power Monitoring | Automotive ECU Reference |
|---|---|
Use Scenario: Monitoring 24 V battery rail in industrial PLC I/O modules with analog front-end ADC reference scaling. IC Role / Device Role / Timing Role: Zener diode provides stable 36 V clamp and 27.4 V reference point for overvoltage detection circuitry. Use Value: 0.1 µA leakage ensures negligible loading on high-impedance sensing nodes; 90 Ω impedance maintains accuracy within ±0.5% under 1 mA transient loads. | Use Scenario: Supply rail supervision in engine control unit (ECU) microcontroller reset logic. IC Role / Device Role / Timing Role: Acts as precision voltage threshold detector triggering POR or brown-out reset when 12 V system rises above 36 V during load dump. Use Value: AEC-Q101 qualification guarantees operation across –40°C to +125°C ambient; 370 mW rating sustains 100 ms load-dump pulses without degradation. |
| IoT Sensor Biasing | Medical Diagnostic Equipment |
Use Scenario: Providing stable bias voltage for MEMS pressure sensor signal conditioning in battery-powered wearables. IC Role / Device Role / Timing Role: Zener regulates 3.3 V LDO input rail derived from boost converter, reducing ripple-induced noise on analog outputs. Use Value: 34–38 V tolerance allows use with 3.3 V regulators via resistor divider; low leakage preserves multi-week battery life in sleep mode. | Use Scenario: Overvoltage protection for analog front-end inputs in portable ultrasound probe interface boards. IC Role / Device Role / Timing Role: Clamps transient spikes from piezoelectric transducer coupling to prevent ADC saturation or op-amp damage. Use Value: 500 mW peak power rating handles 100 ns–1 µs ESD-like transients; SOD123 footprint minimizes board space near sensitive analog traces. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MMBZ5236B-7-F | Same 36 V nominal, but 100 Ω Zener impedance @ 20 mA; SOT-23 package | Higher current capability (20 mA vs. 2 mA test), less suitable for ultra-low-power biasing | Select when higher test current alignment with legacy designs is required |
| BZX84-C36 | 36 V nominal, 90 Ω @ 5 mA; SOT-23 package; ±5% tolerance | 5 mA test current increases power dissipation; tighter voltage tolerance but higher leakage (0.5 µA @ 27.4 V) | Prefer for cost-sensitive consumer designs where 0.5 µA leakage is acceptable |
Compared with MMBZ5236B-7-F and BZX84-C36, BZT52C36-13 offers lower leakage (0.1 µA), optimized for low-current regulation, and SOD123 thermal performance (338 °C/W) better suited for compact industrial PCBs than SOT-23 alternatives.
Availability
BZT52C36-13 is available at Aetrix Electronics and suitable for industrial power monitoring, automotive ECU reference, and IoT sensor biasing requiring stable component supply, full traceability, and long-term lifecycle support.
Supply support for BZT52C36-13 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 semiconductor company specializing in discrete, analog, and mixed-signal solutions, with manufacturing and design centers across Asia, Europe, and the US.
The BZT52 series belongs to Diodes' general-purpose Zener diode product line, engineered for medium-current voltage regulation and overvoltage protection in commercial and automotive applications with emphasis on manufacturability and reliability.
FAQ
What is the maximum reverse voltage (VR) at which BZT52C36-13 guarantees ≤0.1 µA leakage?
The datasheet specifies 0.1 µA maximum reverse leakage current at VR = 27.4 V, which is 76% of the nominal 36 V Zener voltage. This value is measured under standard conditions (TA = +25°C) and serves as the guaranteed upper limit for standby current in precision biasing applications.
Can BZT52C36-13 be used in place of a 33 V Zener for overvoltage clamping?
No - BZT52C36-13 has a nominal Zener voltage of 36 V (34–38 V range), making it unsuitable as a direct replacement for a 33 V device like BZT52C33. Substituting would raise the clamping threshold by ~3 V, potentially exposing downstream components to unsafe overvoltage conditions.
Is the SOD123 package of BZT52C36-13 compatible with standard reflow profiles?
Yes - the SOD123 package is rated for moisture sensitivity level 1 (MSL-1), meaning it can be stored indefinitely at ambient conditions and processed using standard lead-free reflow profiles (peak 260°C) without baking or special handling.
Does BZT52C36-13 meet AEC-Q101 requirements for automotive use?
Yes - the BZT52C36-13 is explicitly qualified to AEC-Q101 standards, covering stress tests including high-temperature reverse bias (HTRB), temperature cycling, and mechanical shock, enabling use in automotive powertrain and body electronics applications.
BZT52C36-13 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- SOD-123
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- Voltage - Zener (Nom) (Vz):
- 36 V
- Tolerance:
- ±6%
- Power - Max:
- 500 mW
- Impedance (Max) (Zzt):
- 90 Ohms
- Current - Reverse Leakage @ Vr:
- 100 nA @ 25.2 V
- Voltage - Forward (Vf) (Max) @ If:
- 900 mV @ 10 mA
- Operating Temperature:
- -65°C ~ 150°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOD-123
BZT52C36-13 FAQ
1.How can I place an order for BZT52C36-13 through Aetrix?
Please submit a Request for Quotation (RFQ) for BZT52C36-13 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 BZT52C36-13 reliable?
The price and inventory of BZT52C36-13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZT52C36-13 is usually 5 days.
3.What payment methods are accepted for BZT52C36-13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZT52C36-13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZT52C36-13?
BZT52C36-13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZT52C36-13 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 BZT52C36-13?
For technical support, including BZT52C36-13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZT52C36-13 requirements.
6.How does Aetrix verify that BZT52C36-13 is sourced from the original manufacturer or authorized distributors?
All BZT52C36-13 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 BZT52C36-13 meets industry standards.
7.What is the process for return or replacement of BZT52C36-13?
All BZT52C36-13 units undergo pre-shipment inspection (PSI). If there is an issue with BZT52C36-13, 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 BZT52C36-13 part is unused and in its original packaging.
Return procedure for BZT52C36-13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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