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Diodes Incorporated BZT52C11-7
- Part No.:
- BZT52C11-7
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Zener Diodes
- Package:
- SOD-123
- Datasheet:
-
BZT52C11-7.pdf
- Description:
- DIODE ZENER 11V 500MW SOD123
- Quantity:
- Payment:
- Shipping:
Inventory:8,281
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Product details
Overview
BZT52C11-7 from Diodes Incorporated is a surface-mount 11 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 (10.4–11.6 V), 20 Ω maximum zener impedance at 5 mA, and 0.1 µA maximum reverse leakage at 8.0 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 BZT52C11-7 datasheet, BZT52C11-7 pinout, BZT52C11-7 application, or BZT52C11-7 equivalent, key selection criteria include its 11 V nominal breakdown voltage, SOD123 thermal resistance (RθJA = 338 °C/W), low leakage (<0.1 µA @ 8.0 V), temperature coefficient (+5.4 mV/°C), and AEC-Q101 qualification for automotive-grade reliability.
Technical Context
This Zener diode operates in reverse-biased breakdown mode to maintain stable voltage across load variations and temperature shifts. Its planar die construction ensures consistent breakdown characteristics, while the SOD123 package supports automated placement and offers 150 °C/W junction-to-lead thermal resistance.
The device exhibits a positive temperature coefficient of +5.4 mV/°C above 6 V, enabling predictable drift compensation in reference designs. It is specified for operation from –65 °C to +150 °C and qualified to AEC-Q101, confirming suitability for under-hood automotive electronics and industrial control systems requiring high-reliability discrete clamping.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 11.0 V nominal, 10.4–11.6 V range at 5 mA - defines precise clamping threshold for 12 V rail protection |
| Power Dissipation (PD) | 370 mW at TA = +25°C - sets maximum continuous power handling on standard FR-4 PCB |
| Zener Impedance (ZZT) | ≤20 Ω at IZT = 5 mA - ensures minimal voltage shift under dynamic load current changes |
| Reverse Leakage (IR) | ≤0.1 µA at VR = 8.0 V - guarantees negligible standby current in battery-powered sensing nodes |
| Temperature Coefficient | +5.4 mV/°C - enables predictable voltage drift correction in temperature-stable references |
| Package | SOD123 - surface-mount outline with 0.57 mm lead width and 2.65 mm body width for compact layout |
| Qualification | AEC-Q101 qualified - validated for automotive applications including engine control and infotainment power domains |
Pinout & Package
Package: SOD123 - molded plastic case with cathode band marking, matte tin-plated alloy 42 leadframe, UL 94V-0 flammability rating, and moisture sensitivity level 1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal / Zener cathode reference node | Connected to lower-potential side of circuit; reverse bias applied between cathode and anode to activate regulation |
| Cathode | Zener breakdown terminal / voltage reference output | Marked by band; connected to regulated voltage node; supplies stable 11 V when reverse biased above breakdown threshold |
Key Features
| Feature | Design Value |
|---|---|
| Planar die construction | Ensures tight VZ distribution and repeatable breakdown behavior across production lots |
| 500 mW power rating at TL = +75°C | Supports higher transient power handling with proper board-level thermal management |
| AEC-Q101 qualification | Validates robustness for automotive environments including thermal cycling, humidity, and mechanical shock |
| Lead-free & RoHS-compliant | Meets global environmental regulations without compromising solderability or long-term reliability |
| Halogen- and antimony-free "Green" compound | Reduces hazardous material content while maintaining UL 94V-0 flame resistance |
Applications
| Automotive Body Control Module (BCM) | Industrial Sensor Signal Conditioning |
|---|---|
Use Scenario: Clamping microcontroller I/O voltage during load dump transients in 12 V vehicle electrical systems. IC Role / Device Role / Timing Role: Zener clamping diode providing overvoltage protection for LIN bus transceivers and GPIO pins. Use Value: Limits voltage excursion to ≤11.6 V, preventing latch-up or damage to 12 V-tolerant peripherals without adding active circuitry. |
Use Scenario: Stabilizing reference voltage for 16-bit ADCs in factory-floor pressure and temperature transmitters. IC Role / Device Role / Timing Role: Passive voltage reference source for ratiometric sensor excitation and analog front-end biasing. Use Value: Delivers <±1% VZ stability over –40°C to +125°C, reducing calibration drift in Class A industrial instrumentation. |
| USB-C Power Delivery Monitoring | Smart Meter Voltage Supervisor |
Use Scenario: Providing a known threshold for CC line voltage detection in USB-C port controllers. IC Role / Device Role / Timing Role: Precision shunt reference for comparator-based VBUS presence and fault detection. Use Value: Enables accurate 11 V trip point with <0.1 µA leakage, minimizing false triggers during low-power suspend states. |
Use Scenario: Monitoring main AC-DC converter output in single-phase electricity meters to detect brownout conditions. IC Role / Device Role / Timing Role: Low-power undervoltage lockout (UVLO) trigger element in metering SoC power management. Use Value: Activates reset at 10.4 V with guaranteed response below 100 nA quiescent current, extending backup battery life. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener voltage regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MMBZ5240BS-7-F | Same 11 V nominal, but SOT-323 package (smaller footprint, higher RθJA = 400 °C/W) | Preferred for space-constrained portable devices; less suitable for sustained 370 mW dissipation | Select when board area is critical and peak power is short-duration only |
| BZX84-C11 | Same 11 V rating, but SOT-23 package and 350 mW PD at TA = +25°C | Lower power capability limits use in thermally dense automotive modules | Choose for cost-sensitive consumer applications where AEC-Q101 is not required |
Compared with MMBZ5240BS-7-F and BZX84-C11, BZT52C11-7 delivers superior thermal performance in SOD123, higher power margin for automotive transients, and formal AEC-Q101 validation-making it the preferred choice for under-hood and industrial control applications demanding long-term stability and reliability.
Availability
BZT52C11-7 is available at Aetrix Electronics and suitable for automotive body control modules, industrial sensor signal conditioning, USB-C power delivery monitoring, and smart meter voltage supervision requiring stable component supply and AEC-Q101 compliance.
Supply support for BZT52C11-7 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 BZT52 series belongs to Diodes' general-purpose Zener diode product line, designed specifically for precision voltage regulation, overvoltage protection, and reference generation in space- and cost-constrained surface-mount applications.
FAQ
What is the maximum reverse leakage current for BZT52C11-7 at 8.0 V?
The maximum reverse leakage current (IR) for BZT52C11-7 is 0.1 µA at VR = 8.0 V and TA = +25°C, as specified in the Electrical Characteristics table. This ultra-low leakage supports energy-efficient designs in battery-backed systems and low-power sensor interfaces where standby current must remain below 100 nA.
Is BZT52C11-7 suitable for automotive applications?
Yes, BZT52C11-7 is AEC-Q101 qualified and manufactured in a green, halogen-free, lead-free process compliant with RoHS 2. Its operating temperature range of –65°C to +150°C, robust SOD123 package, and validated reliability testing make it approved for use in automotive body electronics, infotainment power domains, and engine control subsystems.
How does the temperature coefficient affect BZT52C11-7's regulation accuracy?
BZT52C11-7 has a temperature coefficient of +5.4 mV/°C, meaning its zener voltage increases linearly with temperature. At +125°C, VZ rises by approximately 594 mV above its +25°C value - a total shift of ~5.4%. This behavior is well-documented and predictable, allowing designers to compensate in reference circuits or select it where monotonic drift is acceptable.
What is the recommended PCB pad layout for SOD123 mounting?
The recommended SOD123 pad layout per Diodes Incorporated's package outline specifies X = 0.900 mm (anode pad width), X1 = 4.050 mm (cathode pad length), and Y = 0.950 mm (pad height). This layout ensures reliable solder joint formation, accommodates thermal expansion, and maintains alignment during reflow - critical for achieving the rated 370 mW power dissipation on FR-4 boards.
BZT52C11-7 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):
- 11 V
- Tolerance:
- ±5%
- Power - Max:
- 500 mW
- Impedance (Max) (Zzt):
- 20 Ohms
- Current - Reverse Leakage @ Vr:
- 100 nA @ 8 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
BZT52C11-7 FAQ
1.How can I place an order for BZT52C11-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for BZT52C11-7 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 BZT52C11-7 reliable?
The price and inventory of BZT52C11-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZT52C11-7 is usually 5 days.
3.What payment methods are accepted for BZT52C11-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZT52C11-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZT52C11-7?
BZT52C11-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZT52C11-7 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 BZT52C11-7?
For technical support, including BZT52C11-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZT52C11-7 requirements.
6.How does Aetrix verify that BZT52C11-7 is sourced from the original manufacturer or authorized distributors?
All BZT52C11-7 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 BZT52C11-7 meets industry standards.
7.What is the process for return or replacement of BZT52C11-7?
All BZT52C11-7 units undergo pre-shipment inspection (PSI). If there is an issue with BZT52C11-7, 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 BZT52C11-7 part is unused and in its original packaging.
Return procedure for BZT52C11-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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