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Diodes Incorporated BZT52C9V1TQ-7-F
- Part No.:
- BZT52C9V1TQ-7-F
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Zener Diodes
- Package:
- SC-79, SOD-523
- Datasheet:
-
BZT52C9V1TQ-7-F.pdf
- Description:
- DIODE ZENER 9.1V 300MW SOD523
- Quantity:
- Payment:
- Shipping:
Inventory:3,796
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Product details
Overview
BZT52C9V1TQ-7-F from Diodes Incorporated is a surface-mount Zener diode with a nominal zener voltage of 9.1 V, ±5.5% tolerance (8.5–9.6 V), 300 mW power dissipation, and SOD523 package. It regulates voltage in low-power biasing, reference, and overvoltage protection circuits for automotive sensor interfaces and industrial I/O modules.
For engineers reviewing the BZT52C9V1TQ-7-F datasheet, BZT52C9V1TQ-7-F pinout, BZT52C9V1TQ-7-F application, or BZT52C9V1TQ-7-F equivalent, this page delivers verified electrical specs, thermal behavior, cathode-band polarity confirmation, JEDEC-compliant reliability data, and direct substitution guidance for AEC-Q200-aligned designs.
Technical Context
This Zener diode operates in reverse breakdown mode at a test current of 5 mA, delivering stable regulation with a maximum zener impedance of 15 Ω at 1 kHz and 100 Ω at knee current (1.0 mA). Its temperature coefficient is +3.8 mV/°C, indicating positive drift over temperature.
Designed for high-reliability surface-mount applications, it features a flat-lead SOD523 package with matte tin annealed terminals, moisture sensitivity level 1, and full RoHS/"Green" compliance (Br+Cl <1500 ppm, Sb <1000 ppm). Thermal resistance junction-to-ambient is 417 °C/W on FR-4 board.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 9.1 V nominal, 8.5–9.6 V range at 5 mA - ensures precise clamping in 9 V rail monitoring |
| Power Dissipation (PD) | 300 mW - supports continuous operation in space-constrained PCB layouts without forced cooling |
| Zener Impedance (ZZT) | 15 Ω max at 5 mA, 100 Ω max at 1 mA - maintains regulation stability under varying load currents |
| Reverse Leakage (IR) | 0.5 µA max at 7.0 V - minimizes standby power loss in battery-backed circuits |
| Thermal Resistance (RθJA) | 417 °C/W - defines derating slope: usable up to ~225 mW at +85°C ambient |
| Operating Temperature | −55°C to +150°C - qualified for under-hood automotive and industrial control environments |
Pinout & Package
Package: SOD523 - ultra-compact 1.25 mm × 0.85 mm surface-mount outline with cathode band marking on top view; 0.001 g weight; UL 94V-0 molding compound.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal / Zener cathode reference node | Connected to lower-potential side in regulation circuit; forms reference ground return path |
| Cathode | Reverse-bias input / Zener breakdown terminal | Marked by visible band; connects to supply rail being regulated or clamped |
Key Features
| Feature | Design Value |
|---|---|
| JEDEC-qualified reliability | Qualified to AEC-Q200 stress requirements and manufactured in IATF 16949 facilities - enables use in PPAP-controlled automotive programs |
| Low-profile SOD523 package | Height ≤0.30 mm - allows placement beneath connectors or in stacked PCB assemblies |
| Halogen- and antimony-free "Green" construction | <900 ppm Br, <900 ppm Cl, <1000 ppm Sb - meets global environmental compliance mandates without performance trade-offs |
| Matte tin annealed terminations | Solderable per MIL-STD-202, Method 208 - ensures robust reflow joint integrity across lead-free and SnPb processes |
Applications
| Automotive Sensor Biasing | Industrial Analog Input Protection |
|---|---|
Use Scenario: Providing stable 9.1 V reference for Hall-effect position sensors in engine control units. IC Role / Device Role / Timing Role: Voltage reference and ESD clamp for analog front-end signal conditioning. Use Value: Maintains sensor accuracy across −40°C to +125°C while suppressing transients up to ±30 V. | Use Scenario: Protecting 16-bit ADC inputs in programmable logic controller (PLC) analog modules. IC Role / Device Role / Timing Role: Overvoltage limiter and precision bias source for op-amp driver stages. Use Value: Limits fault voltage to 9.6 V max without loading the signal path (IR ≤0.5 µA at 7 V). |
| USB Port Voltage Clamp | Low-Power MCU Reset Circuit |
Use Scenario: Clamping VBUS surges in USB 2.0 peripheral devices during hot-plug events. IC Role / Device Role / Timing Role: Transient voltage suppressor on 5 V–9 V auxiliary rails. Use Value: Responds within nanoseconds to 100 ns/1 kV pulses; dissipates 300 mW without thermal runaway. | Use Scenario: Generating clean reset threshold for 32-bit ARM Cortex-M microcontrollers operating from 9 V batteries. IC Role / Device Role / Timing Role: Precision voltage monitor enabling brown-out detection at 8.5 V. Use Value: Delivers ±5.5% regulation window matching typical MCU reset hysteresis requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MMSZ5240B-7-F | Zener voltage 10 V (±5%), 500 mW PD, SOD-123 package | Larger footprint (2.7 × 1.4 mm), higher power margin but lower density | Select when board layout allows larger package and 10 V regulation is acceptable |
| BZX584C9V1 | Zener voltage 9.1 V (±5%), 300 mW PD, SOT-23 package | 3-pin SOT-23 requires orientation verification; no cathode band marking | Choose only if existing SOT-23 footprint reuse is mandatory and polarity control is assured |
Compared with MMSZ5240B-7-F and BZX584C9V1, BZT52C9V1TQ-7-F offers superior board-area efficiency (SOD523 = 1.06 mm² vs. SOD-123 = 3.78 mm²), tighter thermal resistance control in dense layouts, and unambiguous cathode identification-critical for automated optical inspection and high-volume automotive assembly.
Availability
BZT52C9V1TQ-7-F is available at Aetrix Electronics and suitable for automotive sensor modules, industrial PLC analog inputs, and USB peripheral protection requiring stable component supply, AEC-Q200 alignment, and tape-and-reel delivery for SMT production.
Supply support for BZT52C9V1TQ-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.
This device belongs to the BZT52C series of precision Zener diodes engineered for high-reliability voltage reference and transient suppression in automotive, industrial, and computing applications where compact size and environmental compliance are critical.
FAQ
What is the maximum reverse leakage current for BZT52C9V1TQ-7-F at 7.0 V?
The maximum reverse leakage current is 0.5 µA at VR = 7.0 V and TA = +25°C, as specified in the Electrical Characteristics table. This value remains ≤1.0 µA up to +125°C ambient, supporting low-power always-on monitoring functions.
Is BZT52C9V1TQ-7-F qualified for automotive use?
Yes - it is manufactured in IATF 16949-certified facilities and qualified to JEDEC standards referenced in AEC-Q200. While the standard part is not Q-suffix qualified, Diodes offers the automotive-grade BZT52C9V1TQ-7-F variant with full PPAP documentation and change control.
How does the SOD523 package affect thermal performance compared to SOD-123?
The SOD523 has higher junction-to-ambient thermal resistance (417 °C/W vs. ~300 °C/W for SOD-123 on identical board), limiting its usable power at elevated temperatures. However, its smaller pad area reduces parasitic capacitance (<2 pF), improving high-frequency transient response.
Can BZT52C9V1TQ-7-F replace a 9.1 V Zener in a 5 mA bias circuit?
Yes - its nominal VZ is 9.1 V at IZT = 5 mA, with 8.5–9.6 V tolerance and 15 Ω dynamic impedance. It maintains regulation within ±0.5 V across 1–10 mA, making it suitable for standard bias networks without recalculating resistor values.
BZT52C9V1TQ-7-F 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):
- 9.1 V
- Tolerance:
- ±6.04%
- Power - Max:
- 300 mW
- Impedance (Max) (Zzt):
- 15 Ohms
- Current - Reverse Leakage @ Vr:
- 500 nA @ 6 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-523
BZT52C9V1TQ-7-F FAQ
1.How can I place an order for BZT52C9V1TQ-7-F through Aetrix?
Please submit a Request for Quotation (RFQ) for BZT52C9V1TQ-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 BZT52C9V1TQ-7-F reliable?
The price and inventory of BZT52C9V1TQ-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 BZT52C9V1TQ-7-F is usually 5 days.
3.What payment methods are accepted for BZT52C9V1TQ-7-F?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZT52C9V1TQ-7-F transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZT52C9V1TQ-7-F?
BZT52C9V1TQ-7-F orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZT52C9V1TQ-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 BZT52C9V1TQ-7-F?
For technical support, including BZT52C9V1TQ-7-F datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZT52C9V1TQ-7-F requirements.
6.How does Aetrix verify that BZT52C9V1TQ-7-F is sourced from the original manufacturer or authorized distributors?
All BZT52C9V1TQ-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 BZT52C9V1TQ-7-F meets industry standards.
7.What is the process for return or replacement of BZT52C9V1TQ-7-F?
All BZT52C9V1TQ-7-F units undergo pre-shipment inspection (PSI). If there is an issue with BZT52C9V1TQ-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 BZT52C9V1TQ-7-F part is unused and in its original packaging.
Return procedure for BZT52C9V1TQ-7-F:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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