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Vishay General Semiconductor - Diodes Division BZT52C8V2-E3-08
- Part No.:
- BZT52C8V2-E3-08
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- Single Zener Diodes
- Package:
- SOD-123
- Datasheet:
-
BZT52C8V2-E3-08.pdf
- Description:
- DIODE ZENER 8.2V 410MW SOD123
- Quantity:
- Payment:
- Shipping:
Inventory:26,660
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Product details
Overview
BZT52C8V2-E3-08 from Vishay Semiconductors is a silicon planar Zener diode rated for 8.2 V nominal zener voltage at 5 mA test current, ±5% tolerance, 500 mW maximum power dissipation on lead, and operating across -55 °C to +150 °C ambient. It provides precision voltage regulation in low-power analog reference and overvoltage protection circuits.
For engineers reviewing the BZT52C8V2-E3-08 datasheet, BZT52C8V2-E3-08 pinout, BZT52C8V2-E3-08 application, or BZT52C8V2-E3-08 equivalent, this device serves as a commercial-grade, RoHS-compliant SOD-123 packaged Zener with verified thermal resistance (RthJA = 420 K/W), dynamic resistance (7 Ω max at 5 mA), and positive temperature coefficient (+4 to +7 × 10⁻⁴/°C).
Technical Context
This Zener diode operates in reverse breakdown mode with tightly controlled voltage regulation under DC or pulsed conditions (tp = 5 ms). Its silicon planar construction ensures stable performance and low leakage (IR ≤ 100 nA at VR = 6.6 V), while the SOD-123 package enables surface-mount integration with defined thermal path to PCB copper.
The device exhibits a positive temperature coefficient of +4 to +7 × 10⁻⁴/°C, indicating increasing zener voltage with rising junction temperature - critical for biasing stability in temperature-varying environments. Its admissible zener current drops from 57 mA at 25 °C to 48 mA at 45 °C, reflecting thermal derating behavior governed by RthJA = 420 K/W on FR-4 board.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 7.79 V min / 8.2 V nom / 8.61 V max at IZT = 5 mA - defines regulated output voltage window under standard test condition |
| Tolerance | ±5% - specifies allowable deviation from nominal 8.2 V for production binning and circuit margining |
| Dynamic Resistance (ZZ) | ≤ 7 Ω at IZT = 5 mA - determines regulation stiffness and output impedance in shunt regulator designs |
| Power Dissipation (Ptot) | 300 mW on FR-4 board - sets maximum continuous power handling with recommended footprint cooling |
| Temperature Coefficient (αVZ) | +4 to +7 × 10⁻⁴/°C - quantifies voltage drift per degree Celsius, enabling thermal error budgeting |
| Reverse Leakage (IR) | ≤ 100 nA at VR = 6.6 V - impacts high-impedance node loading and standby current in precision references |
| Junction Temperature Range | -55 °C to +150 °C - supports operation in automotive under-hood and industrial control environments |
Pinout & Package
SOD-123 surface-mount package: 2.7 mm × 1.55 mm body, 0.85 mm height, cathode marked by bar on top surface; leads soldered to PCB pads per JEDEC 51-3 footprint recommendation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Reference ground node | Connected to system GND or lower-potential rail; forms return path for zener current |
| Cathode | Regulated output node | Provides stabilized 8.2 V output when reverse-biased; polarity-marked with bar on package |
Key Features
| Feature | Design Value |
|---|---|
| Silicon planar construction | Ensures repeatable breakdown characteristics and long-term stability in voltage reference applications |
| E24-standard zener grading | Enables precise selection across common voltage steps without custom binning |
| ESD robustness | HBM > 8 kV and MM > 800 V - reduces risk of field failure during handling and assembly |
| RoHS-compliant, commercial grade | Meets environmental compliance requirements for consumer, computing, and industrial end equipment |
| MSL Level 1 rating | Allows unlimited floor life before reflow - simplifies inventory and manufacturing logistics |
Applications
| Power Supply Reference | Overvoltage Clamp |
|---|---|
Use Scenario: Providing stable 8.2 V reference for ADC voltage dividers and op-amp bias networks in battery-powered sensors. IC Role / Device Role / Timing Role: Shunt voltage reference regulating node voltage against supply variation and load transients. Use Value: Delivers <±0.41 V regulation window (±5%) and low 7 Ω dynamic resistance to minimize reference error under 1–5 mA load changes. | Use Scenario: Protecting microcontroller I/O pins from ESD-induced voltage spikes on 5 V or 3.3 V data lines. IC Role / Device Role / Timing Role: Fast-acting clamp limiting transient voltage to ≤8.61 V before damage threshold is exceeded. Use Value: Responds within nanoseconds to reverse surges up to 100 nA leakage at 6.6 V, ensuring signal integrity without loading normal operation. |
| Temperature-Stable Biasing | Low-Power Voltage Monitor |
Use Scenario: Setting bias point for transistor amplifiers in automotive cabin controllers exposed to -40 °C to +125 °C ambient. IC Role / Device Role / Timing Role: Precision voltage source compensating for semiconductor parameter drift via known αVZ. Use Value: Predictable +4 to +7 × 10⁻⁴/°C TC enables first-order thermal compensation in analog front-ends. | Use Scenario: Detecting brown-out conditions in embedded systems using comparator input referenced to 8.2 V. IC Role / Device Role / Timing Role: Stable threshold generator triggering reset logic when supply falls below regulated level. Use Value: Maintains ≤100 nA leakage at 6.6 V to avoid false triggers, while supporting 48–57 mA max zener current for reliable trip-point definition. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MMBZ5231BS-7-F | Same 8.2 V nominal, ±5% tolerance, but SOT-23 package (higher RthJA ≈ 500 K/W) and 350 mW Ptot | Lower power density and higher thermal resistance limit use in compact, high-ambient-temperature layouts | Select when SOT-23 footprint compatibility is required and thermal margin allows reduced power derating |
| BZX84-C8V2 | Same 8.2 V, ±5%, but SOT-23 package and higher dynamic resistance (10 Ω typ vs. 7 Ω max) | Reduced regulation accuracy under varying load currents due to higher ZZ | Choose for legacy SOT-23 designs where minor regulation stiffness degradation is acceptable |
Compared with BZT52C8V2-E3-08, MMBZ5231BS-7-F offers identical electrical specs but trades SOD-123 thermal efficiency for SOT-23 board space savings, while BZX84-C8V2 sacrifices dynamic resistance performance for broader second-source availability - making BZT52C8V2-E3-08 optimal for thermally constrained, precision-regulation applications.
Availability
BZT52C8V2-E3-08 is available at Aetrix Electronics and suitable for voltage reference design, overvoltage protection, and low-power biasing applications requiring stable component supply and consistent parametric performance across production lots.
Supply support for BZT52C8V2-E3-08 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 Semiconductors is a global supplier of discrete semiconductors, specializing in diodes, MOSFETs, optoelectronics, and passive components with emphasis on reliability and application-specific optimization.
The BZT52 series belongs to Vishay's small-signal Zener diode product line, engineered for precision voltage regulation and transient suppression in space-constrained, cost-sensitive consumer, industrial, and automotive electronics.
FAQ
What is the zener voltage tolerance of BZT52C8V2-E3-08?
The BZT52C8V2-E3-08 has a ±5% zener voltage tolerance, meaning its measured breakdown voltage at 5 mA test current falls between 7.79 V and 8.61 V. This tolerance is specified per the international E24 standard and applies to commercial-grade units ordered with the "-E3" suffix. The tighter ±2% option is available under the "B" prefix (e.g., BZT52B8V2-E3-08), but BZT52C8V2-E3-08 strictly adheres to the ±5% grade.
Can BZT52C8V2-E3-08 be used in automotive applications?
The standard BZT52C8V2-E3-08 is not AEC-Q101 qualified; it is rated for commercial temperature range (-55 °C to +150 °C) and intended for non-automotive use. For automotive applications, Vishay offers the AEC-Q101 qualified variant BZT52C8V2-HE3_A-08, which undergoes additional stress testing and screening. Engineers must specify the "-HE3_A" suffix and verify qualification status in the ordering code to ensure compliance with automotive reliability standards.
What is the maximum power dissipation of BZT52C8V2-E3-08 on a standard FR-4 PCB?
The BZT52C8V2-E3-08 delivers 300 mW maximum power dissipation when mounted on an FR-4 printed circuit board using the recommended soldering footprint per JEDEC 51-3. This value reflects real-world thermal performance with copper heatsinking; the absolute maximum rating of 500 mW applies only under ideal lead-to-heat-sink conditions (RthJL = 250 K/W), which are not achievable in typical SMD layouts. Designers must apply thermal derating curves from the datasheet when ambient exceeds 25 °C.
How does the temperature coefficient affect BZT52C8V2-E3-08 performance?
The BZT52C8V2-E3-08 exhibits a positive temperature coefficient of +4 to +7 × 10⁻⁴/°C, meaning its zener voltage increases linearly with junction temperature. At 100 °C above ambient, the voltage shift is approximately +0.4 V to +0.7 V - a critical factor in high-temperature circuits like engine control modules. This behavior contrasts with lower-voltage Zeners (<5.6 V), which have negative coefficients, and must be included in reference voltage error budgets.
What is the cathode marking convention for BZT52C8V2-E3-08?
The cathode of BZT52C8V2-E3-08 is identified by a distinct bar mark on the top surface of the SOD-123 package, aligned with the cathode terminal. Per Vishay's marking table, this device uses the "YE" code printed adjacent to the bar. During PCB layout and assembly, the bar must align with the designated cathode pad - reversing polarity will forward-bias the diode and prevent proper regulation or clamping function.
BZT52C8V2-E3-08 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Series:
- BZT52
- Package/Case:
- SOD-123
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 8.2 V
- Tolerance:
- ±5%
- Power - Max:
- 410 mW
- Impedance (Max) (Zzt):
- 7 Ohms
- Current - Reverse Leakage @ Vr:
- 100 nA @ 6 V
- Voltage - Forward (Vf) (Max) @ If:
- -
- Operating Temperature:
- -55°C ~ 150°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOD-123
BZT52C8V2-E3-08 FAQ
1.How can I place an order for BZT52C8V2-E3-08 through Aetrix?
Please submit a Request for Quotation (RFQ) for BZT52C8V2-E3-08 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 BZT52C8V2-E3-08 reliable?
The price and inventory of BZT52C8V2-E3-08 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZT52C8V2-E3-08 is usually 5 days.
3.What payment methods are accepted for BZT52C8V2-E3-08?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZT52C8V2-E3-08 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZT52C8V2-E3-08?
BZT52C8V2-E3-08 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZT52C8V2-E3-08 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 BZT52C8V2-E3-08?
For technical support, including BZT52C8V2-E3-08 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZT52C8V2-E3-08 requirements.
6.How does Aetrix verify that BZT52C8V2-E3-08 is sourced from the original manufacturer or authorized distributors?
All BZT52C8V2-E3-08 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 BZT52C8V2-E3-08 meets industry standards.
7.What is the process for return or replacement of BZT52C8V2-E3-08?
All BZT52C8V2-E3-08 units undergo pre-shipment inspection (PSI). If there is an issue with BZT52C8V2-E3-08, 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 BZT52C8V2-E3-08 part is unused and in its original packaging.
Return procedure for BZT52C8V2-E3-08:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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