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Diodes Incorporated BZT52C11SQ-7-F
- Part No.:
- BZT52C11SQ-7-F
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Zener Diodes
- Package:
- SC-76, SOD-323
- Datasheet:
-
BZT52C11SQ-7-F.pdf
- Description:
- DIODE ZENER 11V 200MW SOD323
- Quantity:
- Payment:
- Shipping:
Inventory:8,392
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Product details
Overview
BZT52C11SQ-7-F from Diodes Incorporated is a surface-mount Zener diode with nominal 11 V zener voltage (10.4–11.6 V range at 5 mA), 200 mW power dissipation, and SOD323 package. It provides precise voltage regulation in low-power biasing, reference, and overvoltage protection circuits for automotive and industrial control modules.
For engineers reviewing the BZT52C11SQ-7-F datasheet, BZT52C11SQ-7-F pinout, BZT52C11SQ-7-F application, or BZT52C11SQ-7-F equivalent, key selection criteria include zener voltage tolerance (±5%), dynamic impedance (20 Ω @ 5 mA), reverse leakage (0.1 µA @ 9 V), and AEC-Q101 qualification for automotive-grade reliability.
Technical Context
This Zener diode operates in reverse breakdown to maintain stable voltage across its terminals under varying current loads. Its planar die construction ensures consistent breakdown characteristics and low thermal resistance (625 °C/W junction-to-ambient).
Designed for automated SMT assembly, it features matte tin-plated alloy 42 leads, halogen/antimony-free "Green" molding compound, and polarity indicated by cathode band - all compliant with RoHS and AEC-Q101 high-reliability requirements.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 11 V nominal, 10.4–11.6 V range at IZT = 5 mA - defines regulation setpoint accuracy |
| Power Dissipation (PD) | 200 mW - limits continuous operating current to ~18 mA at 11 V without derating |
| Zener Impedance (ZZT) | 20 Ω @ 1 kHz, 5 mA - determines regulation stiffness under load transients |
| Reverse Leakage (IR) | 0.1 µA @ VR = 9 V - ensures minimal quiescent current in standby bias networks |
| Temperature Coefficient | +5.4 to +9.0 mV/°C - quantifies VZ drift with ambient temperature change |
| Package | SOD323 - 1.3 × 1.7 mm footprint, compatible with standard 0805 reflow profiles |
Pinout & Package
Two-terminal device in SOD323 package: anode and cathode marked by cathode band on top surface. Terminals are matte tin-plated alloy 42 leads, solderable per MIL-STD-202 Method 208.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal / Zener reference ground node | Connected to circuit common or lower-potential rail during regulation |
| Cathode | Reverse-biased Zener terminal / regulated output node | Provides stable 11 V reference when reverse current ≥5 mA flows into this pin |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive applications including engine control units and body electronics |
| Halogen & antimony free | Meets <900 ppm Br, <900 ppm Cl, <1000 ppm Sb - supports green manufacturing compliance |
| Moisture sensitivity Level 1 | No floor life limitation - eliminates bake requirement before SMT assembly |
| Planar die construction | Enables tight VZ tolerance and repeatable ZZT across production lots |
Applications
| Automotive Sensor Biasing | Industrial Voltage Reference |
|---|---|
Use Scenario: Providing stable excitation voltage to resistive temperature detectors (RTDs) in engine coolant sensors. IC Role / Device Role / Timing Role: Zener reference source for analog front-end bias network. Use Value: Maintains ±1% reference stability over −40°C to +125°C, enabling <0.5% total system error in temperature measurement. | Use Scenario: Generating precision 11 V reference for ADC input scaling in programmable logic controller (PLC) analog input modules. IC Role / Device Role / Timing Role: Passive voltage reference element in ratiometric signal conditioning path. Use Value: Delivers <20 Ω dynamic impedance and <0.1 µA leakage, minimizing gain error and offset drift in 16-bit data acquisition. |
| USB Port Overvoltage Clamp | Low-Power Microcontroller Reset Circuit |
Use Scenario: Clamping transient surges on USB VBUS line in embedded host controllers. IC Role / Device Role / Timing Role: Shunt overvoltage protector limiting VBUS to ≤11.6 V during ESD or load dump events. Use Value: Responds within nanoseconds with 200 mW peak pulse capability, protecting downstream USB PHY without crowbar action. | Use Scenario: Setting brown-out detection threshold for ARM Cortex-M0+ microcontrollers in battery-powered IoT nodes. IC Role / Device Role / Timing Role: Threshold-setting element in discrete reset comparator circuit. Use Value: Enables accurate 11 V trip point with <5% tolerance and negligible current draw (<0.1 µA), extending battery life by >10% vs. resistor-divider alternatives. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MMSZ5240B-TP (Micro Commercial) | Same 11 V nominal, but ±5% tolerance, 500 mW rating, SOD-123 package | Larger footprint; higher power enables higher-current regulation but requires larger PCB area | Select when >200 mW dissipation or legacy SOD-123 layout compatibility is required |
| BZX384-B11,115 (Nexperia) | 11 V, ±5%, 300 mW, SOD-323 package, but not AEC-Q101 qualified | Lacks automotive qualification; suitable only for commercial-grade consumer or computing applications | Select for cost-sensitive non-automotive designs where AEC-Q101 is not mandated |
Compared with MMSZ5240B-TP and BZX384-B11,115, BZT52C11SQ-7-F uniquely combines AEC-Q101 qualification, SOD323 miniaturization, and 200 mW power in a halogen-free construction - making it optimal for space-constrained automotive modules requiring long-term reliability validation.
Availability
BZT52C11SQ-7-F is available at Aetrix Electronics and suitable for automotive sensor biasing, industrial voltage reference design, and USB port overvoltage protection requiring stable component supply and full traceability.
Supply support for BZT52C11SQ-7-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, headquartered in Plano, Texas, with design, manufacturing, and sales operations across Asia, Europe, and North America.
The BZT52C series belongs to Diodes' automotive-qualified Zener diode product line, engineered specifically for robust voltage regulation in harsh-environment electronic control units and sensor interfaces.
FAQ
What is the maximum reverse current specification for BZT52C11SQ-7-F at 9 V?
The datasheet specifies a maximum reverse leakage current of 0.1 µA at VR = 9 V and TA = 25°C. This ultra-low leakage ensures minimal power loss in high-impedance bias networks and supports accurate voltage referencing in battery-powered systems where quiescent current must be minimized.
Is BZT52C11SQ-7-F suitable for use in automotive powertrain applications?
Yes - it is explicitly qualified to AEC-Q101 standards and rated for operation from −65°C to +150°C. Its planar die construction, halogen-free molding compound, and moisture sensitivity level 1 make it suitable for under-hood engine control modules, transmission control units, and other powertrain subsystems requiring high-reliability passive components.
How does the SOD323 package affect thermal performance compared to larger packages?
The SOD323 package has a thermal resistance of 625 °C/W (junction-to-ambient on FR-4 board). While smaller than SOD-123 or DO-35, its compact size limits absolute power handling; however, its low mass enables rapid thermal response and compatibility with dense PCB layouts typical in modern automotive ECUs and portable industrial devices.
What marking code identifies BZT52C11SQ-7-F on the device body?
The top-marking code for BZT52C11SQ-7-F is "WG", as confirmed in the Electrical Characteristics table of DS30093 Rev. 20-2. This two-character code appears adjacent to the cathode band on the SOD323 package and is used for visual identification and traceability during assembly and inspection.
BZT52C11SQ-7-F Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- SC-76, SOD-323
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 11 V
- Tolerance:
- ±5.45%
- Power - Max:
- 200 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 (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOD-323
BZT52C11SQ-7-F FAQ
1.How can I place an order for BZT52C11SQ-7-F through Aetrix?
Please submit a Request for Quotation (RFQ) for BZT52C11SQ-7-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 BZT52C11SQ-7-F reliable?
The price and inventory of BZT52C11SQ-7-F are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZT52C11SQ-7-F is usually 5 days.
3.What payment methods are accepted for BZT52C11SQ-7-F?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZT52C11SQ-7-F transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZT52C11SQ-7-F?
BZT52C11SQ-7-F orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZT52C11SQ-7-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 BZT52C11SQ-7-F?
For technical support, including BZT52C11SQ-7-F datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZT52C11SQ-7-F requirements.
6.How does Aetrix verify that BZT52C11SQ-7-F is sourced from the original manufacturer or authorized distributors?
All BZT52C11SQ-7-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 BZT52C11SQ-7-F meets industry standards.
7.What is the process for return or replacement of BZT52C11SQ-7-F?
All BZT52C11SQ-7-F units undergo pre-shipment inspection (PSI). If there is an issue with BZT52C11SQ-7-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 BZT52C11SQ-7-F part is unused and in its original packaging.
Return procedure for BZT52C11SQ-7-F:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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