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Diodes Incorporated BZT52C11T-7
- Part No.:
- BZT52C11T-7
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Zener Diodes
- Package:
- SC-79, SOD-523
- Datasheet:
-
BZT52C11T-7.pdf
- Description:
- DIODE ZENER 11V 300MW SOD523
- Quantity:
- Payment:
- Shipping:
Inventory:3,000
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Product details
Overview
BZT52C11T-7 from Diodes Incorporated is a surface-mount Zener diode with nominal 11 V zener voltage (10.4–11.6 V range at 5 mA), 300 mW power dissipation, 20 Ω maximum zener impedance at test current, and SOD523 package. It provides precise voltage regulation and overvoltage protection in low-power analog and digital supply rails, such as microcontroller I/O clamping and reference voltage generation.
For engineers reviewing the BZT52C11T-7 datasheet, BZT52C11T-7 pinout, BZT52C11T-7 application, or BZT52C11T-7 equivalent, key selection criteria include zener voltage tolerance, thermal resistance (RθJA = 417 °C/W), reverse leakage at rated voltage (0.1 µA @ 9.0 V), cathode band polarity marking, and JEDEC-qualified reliability for industrial and automotive-adjacent designs.
Technical Context
This Zener diode operates in reverse breakdown to maintain stable voltage across its terminals under controlled current conditions. Its 11 V nominal rating is specified at 5 mA test current (IZT), with ±5% tolerance and a positive temperature coefficient of +5.4 mV/°C - enabling predictable drift compensation in temperature-sensitive references.
The device uses a planar silicon junction structure in a molded plastic SOD523 package with matte tin–annealed alloy 42 leads. Its 0.001 g mass, 1.92 mm² pad area mounting, and 417 °C/W junction-to-ambient thermal resistance define its derating behavior up to +150 °C operating temperature.
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 regulated output voltage under standard bias. |
| Power Dissipation (PD) | 300 mW at TA = 25 °C - sets maximum continuous power before thermal derating applies. |
| Zener Impedance (ZZT) | 20 Ω max at 1 kHz, 5 mA - indicates voltage stability under small-signal AC load variations. |
| Reverse Leakage (IR) | 0.1 µA max at 9.0 V - ensures minimal quiescent current in high-impedance clamp or reference circuits. |
| Thermal Resistance (RθJA) | 417 °C/W on FR-4, 2 oz copper, 1.92 mm² pad - determines junction temperature rise per watt dissipated. |
| Operating Temperature | −55 °C to +150 °C - supports deployment in extended-temperature industrial and under-hood environments. |
Pinout & Package
Package: SOD523 - ultra-compact, low-profile surface-mount package with cathode band marking on the top surface; dimensions: D = 0.75–0.85 mm, E = 1.15–1.25 mm, He = 1.55–1.65 mm, L = 0.10–0.30 mm.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal / Zener breakdown reference node | Connected to lower-potential side of circuit; forms voltage reference ground reference point in shunt regulator topology. |
| Cathode | Reverse-biased terminal / Zener output node | Marked with band; connected to regulated voltage rail; carries full zener current during clamping or regulation. |
Key Features
| Feature | Design Value |
|---|---|
| JEDEC-qualified reliability | Qualified to AEC-Q101 standards for high-reliability applications, including PPAP-capable manufacturing in IATF 16949 facilities. |
| Green compound packaging | Molded plastic UL 94V-0 rated, halogen- and antimony-free (<900 ppm Br/Cl, <1000 ppm Sb), fully RoHS 3 compliant. |
| Low-profile SOD523 footprint | 0.65 mm max height and 1.25 mm length enable dense PCB layouts in space-constrained portable and IoT devices. |
| Cathode band polarity marking | Visible top-side band ensures unambiguous orientation during automated placement and visual inspection. |
Applications
| Microcontroller I/O Protection | Low-Power Reference Voltage Source |
|---|---|
Use Scenario: Clamping 3.3 V or 5 V GPIO lines against ESD transients or overvoltage events in embedded controllers. IC Role / Device Role / Timing Role: Shunt voltage limiter placed between I/O pin and ground, conducting only above 11 V threshold. Use Value: Prevents latch-up or oxide damage by limiting transient voltage to ≤11.6 V while drawing <1 µA at normal operating voltage. |
Use Scenario: Generating a stable 11 V reference for ADC biasing or comparator thresholds in battery-powered sensors. IC Role / Device Role / Timing Role: Passive voltage reference element in high-impedance divider networks with series resistor biasing. Use Value: Delivers ±5% accuracy and +5.4 mV/°C TC for predictable drift compensation in 0–70 °C ambient ranges. |
| Industrial Sensor Signal Conditioning | Automotive Body Control Module Clamp |
Use Scenario: Protecting analog front-end inputs of pressure or temperature sensors exposed to 12 V supply coupling noise. IC Role / Device Role / Timing Role: Reverse-biased Zener placed across sensor output to ground, absorbing induced spikes. Use Value: Limits peak voltage to 11.6 V with 20 Ω dynamic impedance, minimizing signal distortion during 100 ns transients. |
Use Scenario: Suppressing load-dump-induced surges on 12 V auxiliary rails in BCM subassemblies. IC Role / Device Role / Timing Role: Secondary clamping device downstream of TVS diodes, handling residual overshoot after primary suppression. Use Value: Withstands 150 °C operation and maintains <0.1 µA leakage at 9 V, ensuring low standby power in always-on modules. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MMBZ5240BS-7-F | 10 V nominal, 200 mW PD, SOD-323 package, RθJA = 357 °C/W | Lower voltage and power rating; tighter 5% tolerance but higher thermal resistance than BZT52C11T-7 | Select when 10 V regulation suffices and board space allows SOD-323; avoid for >125 °C ambient or >250 mW dissipation. |
| BZX84-C11-7 | 11 V nominal, 350 mW PD, SOT-23 package, RθJA = 300 °C/W, 30 Ω ZZT | Higher power capability and lower thermal resistance, but larger footprint and higher zener impedance | Prefer for higher-current regulation (>10 mA) or improved thermal margin; use only if SOT-23 layout is acceptable. |
Compared with MMBZ5240BS-7-F and BZX84-C11-7, BZT52C11T-7 offers optimal balance of 11 V precision, 300 mW capability, and ultra-compact SOD523 size - making it ideal for space-constrained, thermally moderate applications where 20 Ω impedance and JEDEC qualification are critical.
Availability
BZT52C11T-7 is available at Aetrix Electronics and suitable for microcontroller I/O protection, low-power reference voltage sources, industrial sensor signal conditioning, and automotive body control module clamp circuits requiring stable component supply across production lifecycles.
Supply support for BZT52C11T-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, headquartered in Plano, Texas, with design, manufacturing, and distribution operations across Asia, Europe, and North America.
The BZT52CxxT series belongs to Diodes' general-purpose Zener diode product line, engineered for cost-effective, reliable voltage regulation and transient suppression in consumer, industrial, and automotive-qualified systems.
FAQ
What is the maximum reverse leakage current for BZT52C11T-7 at 9.0 V?
The maximum reverse leakage current is 0.1 µA at VR = 9.0 V and TA = 25 °C, as specified in the Electrical Characteristics table. This value remains ≤0.5 µA across the full −55 °C to +150 °C operating range per Figure 5's reverse characteristic curves.
Can BZT52C11T-7 be used in place of a 12 V Zener diode?
No - BZT52C11T-7 has a nominal 11 V rating (10.4–11.6 V range), not 12 V. The BZT52C12T-7 variant is the correct 12 V part in this series, with 11.4–12.7 V range at 5 mA. Substituting BZT52C11T-7 for 12 V applications risks undershoot in regulation or clamping thresholds.
Is BZT52C11T-7 qualified for automotive applications?
The standard BZT52C11T-7 is not AEC-Q200 qualified; however, the automotive-grade version BZT52C11TQ-7 is AEC-Q101 qualified, PPAP-capable, and manufactured in IATF 16949 certified facilities. Use the Q-suffix part for automotive applications requiring change control and stress testing compliance.
What is the recommended PCB pad layout for SOD523 mounting?
Per Diodes' package outline documentation, the recommended SOD523 pad layout uses G = 0.80 mm, X = 0.60 mm, X1 = 2.00 mm, Y = 0.70 mm, with 0.1 mm radius fillets. Pad spacing must accommodate 0.75–0.85 mm device width and allow for 0.26–0.34 mm lead width and coplanarity tolerance.
BZT52C11T-7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- SC-79, SOD-523
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 11 V
- Tolerance:
- ±5%
- Power - Max:
- 300 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-523
BZT52C11T-7 FAQ
1.How can I place an order for BZT52C11T-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for BZT52C11T-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 BZT52C11T-7 reliable?
The price and inventory of BZT52C11T-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZT52C11T-7 is usually 5 days.
3.What payment methods are accepted for BZT52C11T-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZT52C11T-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZT52C11T-7?
BZT52C11T-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZT52C11T-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 BZT52C11T-7?
For technical support, including BZT52C11T-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZT52C11T-7 requirements.
6.How does Aetrix verify that BZT52C11T-7 is sourced from the original manufacturer or authorized distributors?
All BZT52C11T-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 BZT52C11T-7 meets industry standards.
7.What is the process for return or replacement of BZT52C11T-7?
All BZT52C11T-7 units undergo pre-shipment inspection (PSI). If there is an issue with BZT52C11T-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 BZT52C11T-7 part is unused and in its original packaging.
Return procedure for BZT52C11T-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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