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Diodes Incorporated BZT52C20-13-F
- Part No.:
- BZT52C20-13-F
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Zener Diodes
- Package:
- SOD-123
- Datasheet:
-
BZT52C20-13-F.pdf
- Description:
- DIODE ZENER 20V 370MW SOD123
- Quantity:
- Payment:
- Shipping:
Inventory:16,602
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Product details
Overview
BZT52C20-13-F from Diodes Incorporated is a surface-mount 20 V Zener diode in SOD123 package, rated for 500 mW power dissipation at TL = +75°C and 370 mW at TA = +25°C, with ±5% zener voltage tolerance (18.8–21.2 V), 55 Ω maximum zener impedance at 5 mA, and 0.1 µA maximum reverse leakage at 14.4 V. It serves as a precision voltage reference or overvoltage clamp in low-power DC supply rails and signal conditioning circuits.
For engineers reviewing the BZT52C20-13-F datasheet, BZT52C20-13-F pinout, BZT52C20-13-F application, or BZT52C20-13-F equivalent, key selection criteria include zener voltage accuracy, thermal resistance (RθJA = 338 °C/W), cathode-band polarity marking, SOD123 footprint compatibility, and AEC-Q101 qualification status for automotive-grade reliability.
Technical Context
This Zener diode operates in reverse breakdown mode to maintain stable voltage across its terminals under controlled current conditions. Its planar die construction ensures consistent breakdown characteristics and low dynamic impedance (ZZT ≤ 55 Ω at IZT = 5 mA), while the SOD123 package supports automated pick-and-place assembly and provides defined thermal performance on FR-4 PCBs.
The device exhibits a positive temperature coefficient of +14.0 mV/°C near 20 V, enabling predictable drift compensation in temperature-sensitive references. Reverse leakage remains below 0.1 µA at VR = 14.4 V, supporting low-quiescent-current bias networks in battery-powered sensors and analog front-ends.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 20 V nominal, 18.8–21.2 V range at 5 mA - defines clamping/reference level with ±5% tolerance |
| Power Dissipation (PD) | 370 mW at TA = +25°C - sets maximum continuous power in still-air ambient |
| Zener Impedance (ZZT) | ≤55 Ω at IZT = 5 mA - ensures minimal voltage variation under load current changes |
| Reverse Leakage (IR) | ≤0.1 µA at VR = 14.4 V - enables use in ultra-low-power biasing without significant error |
| Thermal Resistance (RθJA) | 338 °C/W - determines junction-to-ambient temperature rise per watt on standard FR-4 layout |
| Operating Temperature | −65 to +150 °C - supports industrial and automotive under-hood environments |
| AEC-Q101 Qualified | Yes - validated for high-reliability automotive applications including body electronics and infotainment |
Pinout & Package
Package: SOD123 - surface-mount plastic case with cathode band marking, 0.010 g weight, UL 94V-0 flammability rating, and matte tin-plated Alloy 42 leadframe.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal / reverse-biased reference node | Connected to lower-potential side of circuit; forms reference ground return path in shunt regulator |
| Cathode | Zener breakdown terminal / regulated output node | Marked with band; connected to higher-potential rail to clamp or regulate voltage |
Key Features
| Feature | Design Value |
|---|---|
| Planar die construction | Ensures repeatable breakdown voltage and low parameter spread across production lots |
| 500 mW power rating at TL = +75°C | Supports higher sustained power in thermally anchored layouts (e.g., copper pour heatsinking) |
| AEC-Q101 qualification | Validates robustness for automotive applications requiring extended temperature cycling and humidity exposure |
| SOD123 footprint | Enables compact board layout and compatibility with industry-standard reflow profiles and AOI inspection |
| Halogen- and antimony-free "Green" compound | Meets strict environmental compliance (Br+Cl <1500 ppm, Sb <1000 ppm) without compromising molding integrity |
Applications
| Power Supply Voltage Clamp | Microcontroller I/O Protection |
|---|---|
|
Use Scenario: Clamping transient spikes on 24 V DC input rails feeding industrial PLC modules. IC Role / Device Role / Timing Role: Shunt voltage limiter placed between rail and ground to absorb energy above 20 V threshold. Use Value: Prevents damage to downstream LDOs and microcontrollers by limiting peak voltage to 21.2 V with <0.1 µA leakage at normal operating voltage. |
Use Scenario: Protecting 3.3 V GPIO pins of an automotive MCU against ESD and bus coupling events. IC Role / Device Role / Timing Role: Low-capacitance (≈15 pF) bidirectional clamp referenced to IOVDD and GND. Use Value: Provides fast response (<1 ns) to transients while adding negligible loading to high-speed digital signals due to sub-100 nA standby current. |
| Temperature-Stable Reference Source | Low-Power Sensor Bias Network |
|
Use Scenario: Generating a stable 20 V reference for ADC full-scale calibration in battery-operated environmental monitors. IC Role / Device Role / Timing Role: Precision shunt reference with +14.0 mV/°C TC, used with series resistor to set IZT = 5 mA. Use Value: Enables <±0.5% total error over −40 to +85 °C when paired with TC-compensating resistor network. |
Use Scenario: Biasing photodiode current-to-voltage amplifier in portable gas detection sensor. IC Role / Device Role / Timing Role: Low-leakage voltage reference establishing virtual ground for op-amp feedback loop. Use Value: Maintains <100 nA offset contribution at 25 °C, preserving sub-nA measurement resolution in ultra-low-current sensing paths. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MMBZ5242B-7-F | Same 20 V nominal rating but ±5% tolerance, 225 Ω max ZZT at 20 mA, 350 mW PD at TA = +25°C | Higher test current (20 mA vs. 5 mA) yields different impedance curve; less suitable for low-current references | Select when higher power handling is needed and tighter low-current impedance is not critical |
| BZX84-C20-7-F | 20 V Zener in SOT-23 package, 350 mW PD, 50 Ω max ZZT at 5 mA, no AEC-Q101 qualification | Smaller footprint but lacks automotive qualification; thermal resistance ~400 °C/W on same PCB layout | Prefer for space-constrained consumer designs where AEC-Q101 is not required |
Compared with MMBZ5242B-7-F and BZX84-C20-7-F, BZT52C20-13-F offers superior thermal performance (RθJA = 338 °C/W), AEC-Q101 validation, and lower zener impedance at its specified 5 mA test current-making it optimal for automotive and industrial voltage reference and clamping where stability and reliability are prioritized over minimum footprint.
Availability
BZT52C20-13-F is available at Aetrix Electronics and suitable for automotive body control modules, industrial sensor interfaces, and battery-powered instrumentation requiring stable component supply, long-term lifecycle support, and RoHS-compliant sourcing.
Supply support for BZT52C20-13-F 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 components for automotive, industrial, and computing markets.
The BZT52C series belongs to Diodes' general-purpose Zener diode product line, engineered for precision voltage regulation and transient suppression in cost-sensitive, high-volume applications with stringent environmental compliance requirements.
FAQ
What is the maximum reverse voltage (VR) at which BZT52C20-13-F guarantees IR ≤ 0.1 µA?
The datasheet specifies that reverse leakage current (IR) is ≤0.1 µA at VR = 14.4 V. This value is measured under standard test conditions (TA = +25°C) and reflects the device's ability to hold off voltage well below its nominal zener voltage while maintaining ultra-low standby current-critical for battery-backed systems.
Can BZT52C20-13-F be used in place of a 20 V Zener with tighter tolerance?
No-BZT52C20-13-F has a guaranteed zener voltage range of 18.8 V to 21.2 V (±5%). For tighter tolerance, consider the BZT52B20-13-F variant (±2%), which shares the same SOD123 package and thermal specs but uses tighter binning during production testing.
Does the "-13-F" suffix indicate tape-and-reel packaging and RoHS compliance?
Yes-the "-13-F" suffix denotes 10,000-unit tape-and-reel packaging and full RoHS compliance (lead-free, halogen-free, antimony-free). The "F" confirms green compound usage per Diodes' specification, and the "13" refers to reel quantity, not date code or revision.
How does the SOD123 package affect thermal performance compared to DO-35 or SOD-323?
The SOD123 offers RθJA = 338 °C/W on FR-4 with 1-inch copper pad-significantly better than SOD-323 (~500 °C/W) and comparable to DO-35 in through-hole layouts. Its larger pad area improves heat spreading, making it more suitable for sustained 370 mW operation in compact surface-mount designs.
BZT52C20-13-F Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- SOD-123
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 20 V
- Tolerance:
- ±6%
- Power - Max:
- 370 mW
- Impedance (Max) (Zzt):
- 55 Ohms
- Current - Reverse Leakage @ Vr:
- 100 nA @ 14 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
BZT52C20-13-F FAQ
1.How can I place an order for BZT52C20-13-F through Aetrix?
Please submit a Request for Quotation (RFQ) for BZT52C20-13-F 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 BZT52C20-13-F reliable?
The price and inventory of BZT52C20-13-F are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZT52C20-13-F is usually 5 days.
3.What payment methods are accepted for BZT52C20-13-F?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZT52C20-13-F transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZT52C20-13-F?
BZT52C20-13-F orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZT52C20-13-F 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 BZT52C20-13-F?
For technical support, including BZT52C20-13-F datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZT52C20-13-F requirements.
6.How does Aetrix verify that BZT52C20-13-F is sourced from the original manufacturer or authorized distributors?
All BZT52C20-13-F 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 BZT52C20-13-F meets industry standards.
7.What is the process for return or replacement of BZT52C20-13-F?
All BZT52C20-13-F units undergo pre-shipment inspection (PSI). If there is an issue with BZT52C20-13-F, 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 BZT52C20-13-F part is unused and in its original packaging.
Return procedure for BZT52C20-13-F:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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