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Diodes Incorporated BZT52C3V0T-7
- Part No.:
- BZT52C3V0T-7
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Zener Diodes
- Package:
- SC-79, SOD-523
- Datasheet:
-
BZT52C3V0T-7.pdf
- Description:
- DIODE ZENER 3V 300MW SOD523
- Quantity:
- Payment:
- Shipping:
Inventory:56,149
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Product details
Overview
BZT52C3V0T-7 from Diodes Incorporated is a surface-mount Zener diode with a nominal zener voltage of 3.0 V (min 2.8 V, max 3.2 V) at 5 mA test current, 95 Ω dynamic impedance at 5 mA, and 300 mW power dissipation in SOD523 package. It provides precision voltage regulation and overvoltage protection in low-power analog sensing and biasing circuits.
For engineers reviewing the BZT52C3V0T-7 datasheet, BZT52C3V0T-7 pinout, BZT52C3V0T-7 application, or BZT52C3V0T-7 equivalent, this part serves as a compact, RoHS-compliant, automotive-qualified (Q-suffix variants available) 3.0 V reference for space-constrained PCBs requiring stable reverse breakdown behavior under ≤10 µA leakage at 1.0 V reverse bias.
Technical Context
This Zener diode operates in reverse breakdown mode to maintain a stable reference voltage across its terminals under controlled current conditions. Its 3.0 V nominal zener voltage exhibits a temperature coefficient of −3.5 mV/°C, enabling predictable drift compensation in temperature-sensitive analog front-ends.
The device is rated for 300 mW power dissipation on FR-4 board with 2 oz copper and 1.92 mm² pad area, with thermal resistance junction-to-ambient of 417 °C/W. Reverse leakage remains ≤10 µA at VR = 1.0 V, supporting low-power standby regulation in battery-backed systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 3.0 V nominal (2.8–3.2 V range at 5 mA); defines stable regulation point for reference or clamping |
| Power Dissipation (PD) | 300 mW maximum; limits continuous reverse-bias energy handling on standard FR-4 PCB |
| Zener Impedance (ZZT) | 95 Ω at 5 mA; determines output voltage variation under load current changes |
| Reverse Leakage (IR) | ≤10 µA at VR = 1.0 V; ensures minimal quiescent current in low-power shutdown states |
| Thermal Resistance (RθJA) | 417 °C/W; quantifies self-heating impact on voltage stability during sustained operation |
| Temperature Coefficient | −3.5 mV/°C; enables predictable voltage drift correction in ambient-varying environments |
| Package | SOD523; 1.25 mm × 0.85 mm footprint with cathode band marking for automated assembly |
Pinout & Package
Package: SOD523 - ultra-compact surface-mount plastic package with matte tin annealed terminals, moisture sensitivity level 1, and UL 94V-0 flammability rating. Cathode identified by band marking on top surface.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal / Zener reference ground node | Connected to circuit ground or lower-potential rail when used in shunt regulation |
| Cathode | Reverse breakdown terminal / regulated output node | Connected to input supply or signal node being clamped; voltage referenced to anode |
Key Features
| Feature | Design Value |
|---|---|
| Low-profile SOD523 package | 1.25 mm × 0.85 mm footprint enables high-density routing in portable and wearable electronics |
| Lead-free & halogen-free construction | Meets RoHS 3 (2015/863/EU) and "Green" definition (<900 ppm Br/Cl, <1000 ppm Sb) |
| Stable 3.0 V reference with tight tolerance | ±3.3% voltage spread (2.8–3.2 V) supports accurate analog sensing without external trimming |
| Low leakage at low reverse bias | ≤10 µA at 1.0 V enables use in battery-powered circuits with multi-year shelf life |
| JEDEC-qualified reliability | Qualified to AEC-Q200 stress standards for automotive-grade change control and PPAP capability |
Applications
| Portable Sensor Biasing | USB Port Overvoltage Clamp |
|---|---|
Use Scenario: Providing stable 3.0 V bias to MEMS accelerometers and temperature sensors in wearables. IC Role / Device Role / Timing Role: Shunt voltage reference regulating sensor supply rail against battery voltage drift. Use Value: Maintains sensor accuracy within ±1% full-scale over 0–60°C due to predictable −3.5 mV/°C TC and low ZZT. |
Use Scenario: Clamping D+ and D− lines to prevent >3.3 V transients from damaging USB PHY ICs. IC Role / Device Role / Timing Role: Low-capacitance (≈15 pF) transient suppressor placed adjacent to connector. Use Value: Limits ESD-induced overshoot to ≤3.2 V while adding <0.3 pF parasitic capacitance to high-speed data lines. |
| Low-Power MCU Reset Circuit | Industrial Analog Input Protection |
Use Scenario: Generating clean 3.0 V reset threshold for 3.3 V microcontrollers in smart meters. IC Role / Device Role / Timing Role: Zener-based voltage detector feeding RC delay network to reset pin. Use Value: Delivers precise 3.0 V trip point with <10 µA leakage, extending battery life in metering applications. |
Use Scenario: Protecting 12-bit ADC inputs from field-induced surges in factory automation I/O modules. IC Role / Device Role / Timing Role: Front-end clamp limiting analog channel voltage to 3.2 V before series resistor. Use Value: Prevents ADC saturation and latch-up with 95 Ω dynamic impedance ensuring fast recovery post-transient. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MMBZ5223BS-7-F | Same 3.0 V nominal zener voltage but higher ZZT (150 Ω), lower PD (200 mW), SOT-323 package | Larger footprint (2.1 mm × 1.25 mm) and reduced power margin limit use in thermally constrained layouts | Select when legacy SOT-323 footprint compatibility is required and thermal headroom exceeds 150 mW |
| BZX84-C3V0 | 3.0 V zener with wider tolerance (2.8–3.2 V same), but higher IR (50 µA at 1.0 V), SOT-23 package | Higher leakage increases standby current in battery-critical designs; larger SOT-23 impedes ultra-dense routing | Prefer only if existing SOT-23 land pattern must be reused and leakage budget allows ≥50 µA |
Compared with MMBZ5223BS-7-F and BZX84-C3V0, the BZT52C3V0T-7 delivers superior thermal performance (300 mW vs. ≤200 mW), lower leakage (10 µA vs. ≥50 µA), and smallest footprint (SOD523), making it optimal for miniaturized, low-power, and thermally sensitive regulation tasks.
Availability
BZT52C3V0T-7 is available at Aetrix Electronics and suitable for portable sensor biasing, USB port overvoltage clamp, and low-power MCU reset circuit applications requiring stable component supply and JEDEC-qualified reliability.
Supply support for BZT52C3V0T-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 semiconductor company specializing in discrete, analog, and mixed-signal solutions, with manufacturing certified to IATF 16949 and quality systems aligned with AEC-Q standards.
The BZT52 series targets cost-sensitive, space-constrained applications needing precision voltage references - designed specifically for consumer, industrial, and automotive subsystems where small size, low leakage, and stable zener characteristics are critical.
FAQ
What is the maximum reverse voltage (VR) at which leakage remains ≤10 µA?
The BZT52C3V0T-7 guarantees IR ≤10 µA at VR = 1.0 V, per Electrical Characteristics Table. At VR = 2.0 V, leakage rises to ≤20 µA. This low-leakage behavior supports long-term battery operation in always-on sensor nodes.
Is the SOD523 package compatible with standard reflow profiles for lead-free soldering?
Yes - the device uses matte tin annealed terminals and is qualified for Pb-free reflow per J-STD-020, with moisture sensitivity level 1. Recommended peak temperature is 260°C for ≤30 seconds, matching IPC/JEDEC Class 3 profiles.
Does this Zener diode support automotive qualification?
The base BZT52C3V0T-7 is not AEC-Q200 qualified, but Diodes offers Q-suffix variants (e.g., BZT52C3V0TQ-7-F) manufactured in IATF 16949 facilities, PPAP-capable, and fully qualified to AEC-Q200 for automotive applications.
How does temperature affect the 3.0 V zener voltage in real-world operation?
With a temperature coefficient of −3.5 mV/°C, the zener voltage decreases linearly: at +85°C, VZ ≈ 2.79 V; at −40°C, VZ ≈ 3.18 V. This predictable drift allows system-level compensation in precision analog designs.
BZT52C3V0T-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):
- 3 V
- Tolerance:
- ±7%
- Power - Max:
- 300 mW
- Impedance (Max) (Zzt):
- 95 Ohms
- Current - Reverse Leakage @ Vr:
- 10 µA @ 1 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
BZT52C3V0T-7 FAQ
1.How can I place an order for BZT52C3V0T-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for BZT52C3V0T-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 BZT52C3V0T-7 reliable?
The price and inventory of BZT52C3V0T-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZT52C3V0T-7 is usually 5 days.
3.What payment methods are accepted for BZT52C3V0T-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZT52C3V0T-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZT52C3V0T-7?
BZT52C3V0T-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZT52C3V0T-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 BZT52C3V0T-7?
For technical support, including BZT52C3V0T-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZT52C3V0T-7 requirements.
6.How does Aetrix verify that BZT52C3V0T-7 is sourced from the original manufacturer or authorized distributors?
All BZT52C3V0T-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 BZT52C3V0T-7 meets industry standards.
7.What is the process for return or replacement of BZT52C3V0T-7?
All BZT52C3V0T-7 units undergo pre-shipment inspection (PSI). If there is an issue with BZT52C3V0T-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 BZT52C3V0T-7 part is unused and in its original packaging.
Return procedure for BZT52C3V0T-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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