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Vishay General Semiconductor - Diodes Division BZT52B2V4-G3-08
- Part No.:
- BZT52B2V4-G3-08
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- Single Zener Diodes
- Package:
- SOD-123
- Datasheet:
-
BZT52B2V4-G3-08.pdf
- Description:
- DIODE ZENER 2.4V 410MW SOD123
- Quantity:
- Payment:
- Shipping:
Inventory:15,940
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Product details
Overview
BZT52B2V4-G3-08 from Vishay Semiconductors is a silicon planar Zener diode with nominal zener voltage 2.4 V, ±2 % tolerance, and 5 mA test current, designed for precision voltage regulation and reference in low-power analog circuits such as sensor biasing, power supply feedback, and overvoltage protection in portable electronics.
For engineers reviewing the BZT52B2V4-G3-08 datasheet, BZT52B2V4-G3-08 pinout, BZT52B2V4-G3-08 application, or BZT52B2V4-G3-08 equivalent, key selection criteria include its 2.4 V zener voltage accuracy, 100 Ω dynamic resistance at 5 mA, -9 to -4 ×10⁻⁴/°C temperature coefficient, SOD-123 package thermal performance, and compatibility with automated surface-mount assembly on FR-4 PCBs.
Technical Context
This device operates as a single-element, cathode-marked Zener diode optimized for stable reverse-bias breakdown at 2.4 V under 5 mA test current. Its silicon planar construction ensures tight voltage distribution per E24 standard and supports operation across -55 °C to +150 °C ambient range.
Thermal resistance junction-to-ambient is 420 K/W on FR-4 board with recommended footprint, while junction-to-lead resistance is 250 K/W. Maximum power dissipation is 300 mW on FR-4 and 500 mW at lead level, enabling use in compact, thermally constrained designs without active cooling.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 2.35 V min / 2.4 V nom / 2.45 V max at IZT = 5 mA - enables precise 2.4 V reference within ±2 % tolerance for feedback loops and voltage clamping |
| Dynamic Resistance (ZZ) | 100 Ω at IZT = 5 mA - ensures minimal output impedance variation during regulation, critical for stable reference performance |
| Temperature Coefficient (αVZ) | -9 to -4 ×10⁻⁴/°C - indicates negative drift with temperature, requiring compensation in high-stability applications above 45 °C |
| Max Power Dissipation | 300 mW on FR-4 board - defines safe continuous operating limit with standard PCB layout; exceeds 500 mW when leads are heat-sunk |
| Reverse Leakage Current | <1 µA at VR = 1 V - guarantees low standby current in battery-powered systems where quiescent power matters |
| Junction Temperature Range | -55 °C to +150 °C - supports automotive under-hood, industrial control, and extended-temperature embedded deployments |
| Package | SOD-123 - surface-mount plastic case with cathode bar marking, 2.7 mm × 1.55 mm footprint, MSL Level 1, RoHS-compliant |
Pinout & Package
SOD-123 package: 2-terminal surface-mount device with molded plastic body, cathode identified by a bar on the top surface. Dimensions: 2.7 mm length × 1.55 mm width × 1.175 mm height; lead pitch 2.5 mm; weight 10.6 mg.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal / Zener cathode reference ground | Connected to circuit ground or lower-potential node; forms reference return path in shunt regulator configuration |
| Cathode | Zener breakdown terminal / regulated output node | Connected to input voltage source; maintains 2.4 V relative to anode during reverse conduction; marked with bar on package |
Key Features
| Feature | Design Value |
|---|---|
| ±2 % Zener voltage tolerance | Enables tighter regulation than standard ±5 % parts (e.g., BZT52C2V4-G), reducing need for external trimming in precision references |
| ESD robustness | HBM > 8 kV and MM > 800 V per AEC-Q101 - improves reliability in handling and end-equipment environments with electrostatic risk |
| Low dynamic resistance | 100 Ω at 5 mA - minimizes voltage deviation under load transients, supporting stable feedback in DC-DC converters |
| Green, commercial-grade marking | "G3" suffix denotes halogen-free, RoHS-compliant molding compound and JEDEC-standard green packaging - meets environmental compliance requirements |
| MSL Level 1 rating | No floor life limitation before reflow - eliminates bake-out requirement and simplifies manufacturing logistics for high-volume SMT lines |
Applications
| Power Supply Feedback | Sensor Bias Reference |
|---|---|
Use Scenario: Regulating output voltage of isolated flyback or buck converter via optocoupler-coupled feedback loop. IC Role / Device Role / Timing Role: Shunt voltage reference providing stable 2.4 V threshold to TL431 or similar error amplifier input. Use Value: Tight ±2 % tolerance reduces output voltage drift across production units, improving system-level power accuracy without calibration. | Use Scenario: Providing excitation voltage to resistive temperature detectors (RTDs) or bridge-based pressure sensors in battery-operated IoT nodes. IC Role / Device Role / Timing Role: Low-current, stable bias source replacing higher-power LDOs to minimize quiescent consumption. Use Value: Sub-1 µA leakage at 1 V reverse bias preserves battery life; SOD-123 footprint allows placement near sensor element for minimal trace parasitics. |
| Overvoltage Clamp | Microcontroller I/O Protection |
Use Scenario: Protecting ADC inputs or communication lines (e.g., UART, I²C) from transient surges exceeding 3.3 V rail. IC Role / Device Role / Timing Role: Fast-acting shunt clamp diverting excess energy to ground before damage occurs. Use Value: 2.4 V breakdown ensures clamping begins well below 3.3 V logic thresholds, preventing latch-up while maintaining signal integrity during normal operation. | Use Scenario: Safeguarding GPIO pins of ARM Cortex-M microcontrollers against ESD events and accidental 5 V misconnection. IC Role / Device Role / Timing Role: Primary front-end protection element placed directly at connector or header interface. Use Value: AEC-Q101-qualified ESD robustness (>8 kV HBM) provides certified immunity margin beyond IEC 61000-4-2 Level 4 requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZT52C2V4-G3-08 | Same SOD-123 package and 2.4 V nominal voltage, but ±5 % tolerance instead of ±2 % | Acceptable where cost sensitivity outweighs regulation precision; less suitable for closed-loop feedback requiring tight setpoint stability | Select when budget constraints dominate and system-level calibration compensates for wider voltage spread |
| MMBZ5222BS-7-F | 2.4 V ±5 %, SOT-23 package, 350 mW PD, 120 Ω ZZ - smaller footprint but higher dynamic resistance and lower power rating | Better suited for ultra-compact layouts; not recommended for sustained >100 mA clamp currents due to thermal limits | Choose for space-constrained designs where 0.6 mm² area saving justifies trade-off in regulation stability and thermal headroom |
Compared with BZT52B2V4-G3-08, BZT52C2V4-G3-08 offers lower cost but sacrifices 2.5× voltage accuracy, while MMBZ5222BS-7-F saves board area yet reduces power handling by 40 % and increases dynamic resistance by 20 % - making BZT52B2V4-G3-08 optimal for precision, thermally stable, and production-ready shunt regulation.
Availability
BZT52B2V4-G3-08 is available at Aetrix Electronics and suitable for power supply feedback, sensor biasing, overvoltage clamping, and microcontroller I/O protection requiring stable component supply across automotive, industrial, and consumer electronics programs.
Supply support for BZT52B2V4-G3-08 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
Vishay Intertechnology is a global semiconductor manufacturer specializing in discrete components, passive elements, and sensors, with leadership in reliability-tested, application-optimized devices for demanding environments.
The BZT52-G Series targets cost-effective, high-yield Zener regulation in commercial and automotive applications, emphasizing tight tolerances, AEC-Q101 readiness, and robust SMT manufacturability in the SOD-123 package.
FAQ
What is the exact zener voltage range for BZT52B2V4-G3-08 at 25 °C?
The BZT52B2V4-G3-08 has a guaranteed zener voltage range of 2.35 V minimum to 2.45 V maximum at 5 mA test current and 25 °C ambient temperature, reflecting its ±2 % tolerance grade per the E24 standard. This specification is measured using 5 ms pulses and applies strictly to the BZT52B2V4-G3-08 variant - not the broader BZT52-G family.
Is BZT52B2V4-G3-08 qualified to AEC-Q101?
No, BZT52B2V4-G3-08 is not AEC-Q101 qualified. The Vishay datasheet states AEC-Q101 qualification is "available (part number on request)" for the BZT52-G series, but the specific ordering code BZT52B2V4-G3-08 carries no AEC-Q101 designation in its marking or ordering table. Engineers requiring automotive qualification must contact Vishay for a dedicated AEC-Q101 variant.
What is the maximum continuous zener current for BZT52B2V4-G3-08 at 45 °C ambient?
At 45 °C ambient temperature, the maximum admissible zener current for BZT52B2V4-G3-08 is 124 mA, as specified in the "Admissible Zener Current" column of the electrical characteristics table. This value assumes electrodes remain at ambient temperature and accounts for derating from the 146 mA limit at 25 °C due to thermal constraints.
Does BZT52B2V4-G3-08 have a defined cathode marking, and how is it oriented on the SOD-123 package?
Yes, BZT52B2V4-G3-08 uses a cathode bar marking on the top surface of the SOD-123 package, consistent with industry-standard polarity identification. The bar aligns with the cathode terminal, which must be connected to the higher-potential node in shunt regulation applications - confirmed by Vishay's orientation diagram showing cathode facing tape sprocket holes in carrier tape.
Can BZT52B2V4-G3-08 be used in place of BZT52C2V4-G3-08 without circuit modification?
Yes, BZT52B2V4-G3-08 is a direct functional replacement for BZT52C2V4-G3-08 in most circuits, sharing identical SOD-123 package, pinout, absolute maximum ratings, and nominal 2.4 V zener voltage. The only difference is tighter ±2 % tolerance versus ±5 %, which improves regulation accuracy without requiring layout or schematic changes.
BZT52B2V4-G3-08 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Series:
- BZT52-G
- Package/Case:
- SOD-123
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 2.4 V
- Tolerance:
- ±2%
- Power - Max:
- 410 mW
- Impedance (Max) (Zzt):
- 100 Ohms
- Current - Reverse Leakage @ Vr:
- -
- Voltage - Forward (Vf) (Max) @ If:
- -
- Operating Temperature:
- -55°C ~ 150°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOD-123
BZT52B2V4-G3-08 FAQ
1.How can I place an order for BZT52B2V4-G3-08 through Aetrix?
Please submit a Request for Quotation (RFQ) for BZT52B2V4-G3-08 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 BZT52B2V4-G3-08 reliable?
The price and inventory of BZT52B2V4-G3-08 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZT52B2V4-G3-08 is usually 5 days.
3.What payment methods are accepted for BZT52B2V4-G3-08?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZT52B2V4-G3-08 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZT52B2V4-G3-08?
BZT52B2V4-G3-08 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZT52B2V4-G3-08 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 BZT52B2V4-G3-08?
For technical support, including BZT52B2V4-G3-08 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZT52B2V4-G3-08 requirements.
6.How does Aetrix verify that BZT52B2V4-G3-08 is sourced from the original manufacturer or authorized distributors?
All BZT52B2V4-G3-08 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 BZT52B2V4-G3-08 meets industry standards.
7.What is the process for return or replacement of BZT52B2V4-G3-08?
All BZT52B2V4-G3-08 units undergo pre-shipment inspection (PSI). If there is an issue with BZT52B2V4-G3-08, 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 BZT52B2V4-G3-08 part is unused and in its original packaging.
Return procedure for BZT52B2V4-G3-08:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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