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Diodes Incorporated BZT52C3V3TQ-7-F
- Part No.:
- BZT52C3V3TQ-7-F
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Zener Diodes
- Package:
- SC-79, SOD-523
- Datasheet:
-
BZT52C3V3TQ-7-F.pdf
- Description:
- DIODE ZENER 3.3V 300MW SOD523
- Quantity:
- Payment:
- Shipping:
Inventory:3,780
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Product details
Overview
BZT52C3V3TQ-7-F from Diodes Incorporated is a surface-mount Zener diode with a nominal zener voltage of 3.3 V, ±6% tolerance (3.1–3.5 V), 300 mW power dissipation, and SOD523 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 BZT52C3V3TQ-7-F datasheet, BZT52C3V3TQ-7-F pinout, BZT52C3V3TQ-7-F application, or BZT52C3V3TQ-7-F equivalent, key selection criteria include zener voltage accuracy at 5 mA test current, low dynamic impedance (95 Ω at 1 kHz), reverse leakage ≤5 µA at 1.0 V, and AEC-Q200-compliant construction for automotive-grade reliability.
Technical Context
This Zener diode operates in reverse breakdown mode to maintain stable voltage across its terminals under varying load and temperature conditions. Its thermal resistance (RθJA = 417 °C/W) and junction-to-case resistance (RθJC = 160 °C/W) define its derating behavior on FR-4 PCBs with 2 oz copper.
The device exhibits a negative temperature coefficient of −3.5 mV/°C near 3.3 V, enabling predictable drift compensation in precision references. Its maximum reverse current (IR) is specified at 5.0 µA @ VR = 1.0 V, supporting low-leakage sensing and clamping applications.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 3.3 V nominal, 3.1–3.5 V range at IZT = 5 mA - ensures tight regulation in 3.3 V rail monitoring |
| Power Dissipation (PD) | 300 mW - supports continuous operation in space-constrained SOD523 footprint without forced cooling |
| Zener Impedance (ZZT) | 95 Ω @ 1 kHz - minimizes output voltage variation under dynamic load transients |
| Reverse Leakage (IR) | ≤5.0 µA @ VR = 1.0 V - enables low-current bias networks and high-impedance sensing nodes |
| Temperature Coefficient | −3.5 mV/°C - allows predictable voltage drift modeling for temperature-compensated references |
| Package | SOD523 - 1.25 mm × 0.85 mm × 0.65 mm footprint ideal for dense automotive PCB layouts |
Pinout & Package
Package: SOD523 - ultra-compact, flat-lead surface-mount package with cathode band marking; molded green compound (UL 94V-0), moisture sensitivity level 1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal / Zener cathode reference ground | Connected to lower-potential node in reverse-biased configuration; defines reference point for regulated voltage |
| Cathode | Zener breakdown terminal / voltage regulation output | Connected to higher-potential node; delivers stable 3.3 V reference when reverse biased above breakdown threshold |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q200 qualified construction | Manufactured in IATF 16949-certified facilities with PPAP capability - meets automotive reliability requirements |
| Lead-free & halogen-free | RoHS 3 compliant (<900 ppm Br+Cl, <1000 ppm Sb) - satisfies global environmental compliance mandates |
| Low-profile SOD523 package | Height ≤0.65 mm - enables use in thin-profile modules such as ADAS sensors and body control units |
| Stable 3.3 V reference | ±6% tolerance at 5 mA - supports accurate ADC reference, LDO feedback, and microcontroller reset circuitry |
Applications
| Automotive Body Control Module | Industrial Sensor Signal Conditioning |
|---|---|
Use Scenario: Regulating reference voltage for LIN bus transceiver biasing and microcontroller ADC inputs in door module ECUs. IC Role / Device Role / Timing Role: Zener voltage reference providing stable 3.3 V supply to analog front-end and communication ICs. Use Value: Ensures consistent signal acquisition accuracy across −40°C to +125°C ambient, meeting AEC-Q100 Grade 2 requirements. | Use Scenario: Clamping and biasing thermistor bridge outputs in HVAC temperature sensing circuits. IC Role / Device Role / Timing Role: Precision shunt regulator establishing known reference point for differential amplifier input stages. Use Value: Maintains ≤0.5% measurement error over full operating range due to low dynamic impedance and tight VZ tolerance. |
| USB-C Power Delivery Monitor | Smart Meter Voltage Supervisor |
Use Scenario: Overvoltage protection and voltage-level translation for USB-C CC line monitoring ICs. IC Role / Device Role / Timing Role: Reverse-biased clamp limiting CC line voltage to safe 3.3 V logic levels during fault events. Use Value: Prevents damage to 3.3 V interface ICs with fast response and ≤5 µA leakage at standby. | Use Scenario: Monitoring main supply rail integrity in three-phase smart meter MCU subsystems. IC Role / Device Role / Timing Role: Supervisory reference element triggering brown-out detection when VDD drops below 3.1 V. Use Value: Enables reliable reset assertion with guaranteed 3.1 V minimum threshold across temperature and aging. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MMBZ5226BS-7-F | Zener voltage 3.3 V, but SOT-323 package (larger footprint, RθJA = 350 °C/W) | Higher power handling (350 mW), less suitable for ultra-dense layouts | Select when board layout allows larger pad area and thermal margin is critical |
| BZX384-C3V3,115 | Same 3.3 V rating, SOD-323 package, but ±5% tolerance and higher leakage (10 µA @ 1 V) | Lower cost, non-automotive grade; not AEC-Q200 qualified | Select for consumer-grade applications where automotive qualification is unnecessary |
Compared with MMBZ5226BS-7-F and BZX384-C3V3,115, BZT52C3V3TQ-7-F offers superior space efficiency (SOD523), guaranteed automotive qualification, and tighter leakage performance-making it optimal for safety-critical, high-density embedded systems.
Availability
BZT52C3V3TQ-7-F is available at Aetrix Electronics and suitable for automotive body control modules, industrial sensor interfaces, USB-C power delivery monitors, and smart meter voltage supervisors requiring stable component supply and AEC-Q200 compliance.
Supply support for BZT52C3V3TQ-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, specializing in high-reliability components for automotive, industrial, and computing markets.
The BZT52C series belongs to Diodes' automotive-qualified Zener diode product line, engineered specifically for voltage regulation, reference, and protection in harsh-environment electronic control units.
FAQ
What is the maximum reverse voltage (VR) that BZT52C3V3TQ-7-F can withstand before breakdown?
The device is rated for a nominal zener voltage of 3.3 V at 5 mA test current, with a guaranteed breakdown range of 3.1–3.5 V. It does not have a separate "maximum reverse voltage" rating; operation beyond 3.5 V under sustained current exceeds specification and risks thermal runaway unless current-limited per derating curves.
Is BZT52C3V3TQ-7-F suitable for use in a 3.3 V LDO feedback network?
Yes - its tight 3.1–3.5 V tolerance at 5 mA, low 95 Ω dynamic impedance, and −3.5 mV/°C temperature coefficient enable stable closed-loop regulation in adjustable LDO feedback paths, especially where space constraints favor SOD523 over larger packages.
Does this part meet AEC-Q200 requirements out of the box?
Yes - the "Q" suffix in BZT52C3V3TQ-7-F explicitly denotes AEC-Q200 qualification. It is manufactured in IATF 16949-certified facilities, PPAP-capable, and intended for automotive applications requiring change control and high reliability.
How does the SOD523 package affect thermal performance compared to SOD-123 or SOT-23?
The SOD523 package has higher thermal resistance (RθJA = 417 °C/W) than SOD-123 (~250 °C/W) or SOT-23 (~200 °C/W), limiting continuous power dissipation to 300 mW on standard FR-4. Layout must use adequate copper pour and avoid thermal isolation to maintain safe junction temperatures.
BZT52C3V3TQ-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):
- 3.3 V
- Tolerance:
- ±6.06%
- Power - Max:
- 300 mW
- Impedance (Max) (Zzt):
- 95 Ohms
- Current - Reverse Leakage @ Vr:
- 5 µA @ 1 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
BZT52C3V3TQ-7-F FAQ
1.How can I place an order for BZT52C3V3TQ-7-F through Aetrix?
Please submit a Request for Quotation (RFQ) for BZT52C3V3TQ-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 BZT52C3V3TQ-7-F reliable?
The price and inventory of BZT52C3V3TQ-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 BZT52C3V3TQ-7-F is usually 5 days.
3.What payment methods are accepted for BZT52C3V3TQ-7-F?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZT52C3V3TQ-7-F transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZT52C3V3TQ-7-F?
BZT52C3V3TQ-7-F orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZT52C3V3TQ-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 BZT52C3V3TQ-7-F?
For technical support, including BZT52C3V3TQ-7-F datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZT52C3V3TQ-7-F requirements.
6.How does Aetrix verify that BZT52C3V3TQ-7-F is sourced from the original manufacturer or authorized distributors?
All BZT52C3V3TQ-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 BZT52C3V3TQ-7-F meets industry standards.
7.What is the process for return or replacement of BZT52C3V3TQ-7-F?
All BZT52C3V3TQ-7-F units undergo pre-shipment inspection (PSI). If there is an issue with BZT52C3V3TQ-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 BZT52C3V3TQ-7-F part is unused and in its original packaging.
Return procedure for BZT52C3V3TQ-7-F:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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