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Vishay General Semiconductor - Diodes Division BZG04-8V2TR
- Part No.:
- BZG04-8V2TR
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
BZG04-8V2TR.pdf
- Description:
- TVS DIODE 8.2VWM 14.8VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:4,520
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Product details
Overview
BZG04-8V2TR from Vishay Semiconductors is a glass-passivated, surface-mount Zener diode designed for transient voltage suppression in DC power rails and signal lines. It features a nominal Zener voltage of 8.2 V, 300 W non-repetitive peak surge power (10/1000 µs), 50 A peak forward surge current, and clamps transients to ≤14.8 V at 20.3 A. It is used in automotive body electronics for protecting CAN/LIN bus interfaces against load dump and ESD.
For engineers reviewing the BZG04-8V2TR datasheet, BZG04-8V2TR pinout, BZG04-8V2TR application, or BZG04-8V2TR equivalent, key selection criteria include its 8.2 V standoff voltage, DO-214AC package thermal resistance (RthJA = 125–150 K/W), 1200 pF junction capacitance at 0 V, and compliance with RoHS 2002/95/EC.
Technical Context
The BZG04-8V2TR operates as a unidirectional voltage clamp with a sharp Zener breakdown at 8.2 V ±5 % (measured at IZT = 50 mA). Its glass-passivated junction ensures stable leakage current (IR ≤ 20 µA at VR = 8.2 V) and fast response time (≤1 ps), enabling effective suppression of sub-nanosecond ESD events.
Thermal performance is defined for mounting on epoxy-glass PCBs (RthJA = 125–150 K/W) or Al₂O₃ ceramic substrates (RthJA = 100 K/W), supporting reliable operation up to TJ = 150 °C. The device sustains 3 W continuous power dissipation at Tamb = 50 °C with RthJA < 100 K/W.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 8.2 V ±5 % at IZT = 50 mA - defines precise clamping threshold for 5–12 V rail protection |
| Clamping Voltage (VCL) | 14.8 V max at IPP = 20.3 A (10/1000 µs) - limits transient overvoltage seen by downstream ICs |
| Junction Capacitance | 1200 pF at VR = 0 V, f = 1 MHz - impacts high-frequency signal integrity in data line protection |
| Peak Surge Power | 300 W (10/1000 µs) - withstands automotive load dump and ISO 7637-2 Pulse 5a |
| Forward Voltage | 1.2 V max at IF = 0.5 A - enables low-loss reverse-biased standby operation with minimal leakage path loss |
| Surge Current Rating | 50 A (10 ms half-sine) - supports repeated surge events without degradation in industrial control inputs |
Pinout & Package
Package: DO-214AC (SMA), molded plastic case with axial leads trimmed and formed for surface-mount reflow. Approximate weight: 77 mg. Standard tape-and-reel packaging: TR = 1.5 k per 7″ reel.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (A) | Current entry terminal during forward conduction | Connected to ground or lower-potential node in unidirectional TVS configuration |
| Cathode (K) | Current exit terminal during reverse breakdown | Connected to protected line (e.g., CAN_H); clamps to anode when voltage exceeds 8.2 V |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Enables stable Zener voltage tolerance (±5 %) and low IR drift over temperature and lifetime |
| Fast response time ≤1 ps | Provides effective suppression of nanosecond-scale ESD (IEC 61000-4-2) without signal distortion |
| RoHS-compliant, lead-free | Meets EU Directive 2002/95/EC and WEEE 2002/96/EC for environmentally compliant manufacturing |
| High reliability construction | Validated for automotive-grade operation with TJ up to 150 °C and storage range –65 to +150 °C |
Applications
| Automotive Body Control Module (BCM) | Industrial PLC Digital Input Protection |
|---|---|
Use Scenario: Protecting LIN bus transceivers from battery feed transients and electrostatic discharge during assembly. IC Role / Device Role / Timing Role: Unidirectional transient voltage suppressor placed between LIN line and ground. Use Value: Clamps 10/1000 µs surges to ≤14.8 V while maintaining <20 µA leakage at 8.2 V, preserving LIN signal integrity. |
Use Scenario: Safeguarding 24 V DC digital input channels in programmable logic controllers against field-wiring faults. IC Role / Device Role / Timing Role: Primary overvoltage clamp on input terminals before optocoupler isolation stage. Use Value: Absorbs 300 W surge energy without failure, enabling robust operation under IEC 61000-4-4 EFT testing. |
| Automotive Infotainment Power Supply | Smart Meter Communication Interface |
Use Scenario: Guarding 5 V supply rail of infotainment head unit against load dump coupling via shared ground paths. IC Role / Device Role / Timing Role: Secondary clamp after primary TVS, handling residual fast transients missed by bulk suppressors. Use Value: Fast ≤1 ps response prevents latch-up in downstream LDOs and microcontrollers during ignition transients. |
Use Scenario: Protecting RS-485 transceiver pins in utility smart meters exposed to lightning-induced surges on long outdoor cables. IC Role / Device Role / Timing Role: Line-to-ground TVS on differential pair (A/B) with cathode tied to VCC or ground depending on bias scheme. Use Value: 1200 pF capacitance balanced across both lines minimizes common-mode distortion while meeting IEC 61000-4-5 Level 3 requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener-based transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ8.0A | Higher clamping voltage (13.6 V @ 22.5 A), lower capacitance (1000 pF), same DO-214AA package | Preferred for higher-energy 10/1000 µs surges where tighter clamping is less critical than lower parasitic capacitance | Select SMBJ8.0A if system-level testing shows 13.6 V clamping is acceptable and 200 pF lower capacitance improves signal fidelity |
| P6SMB8.2A | Same Zener voltage (8.2 V), higher surge rating (600 W), larger DO-214AA package (higher RthJA ≈ 180 K/W) | Used where board space allows larger footprint and higher single-event energy absorption is required | Choose P6SMB8.2A only when 600 W surge capacity is validated necessary and thermal derating margin permits higher RthJA |
Compared with SMBJ8.0A and P6SMB8.2A, the BZG04-8V2TR offers tighter 8.2 V tolerance (±5 % vs. ±10 %), lower clamping (14.8 V vs. 13.6–15.0 V), and optimized thermal resistance for compact layouts-making it preferred for space-constrained automotive modules requiring precise voltage limiting.
Availability
BZG04-8V2TR is available at Aetrix Electronics and suitable for automotive body electronics, industrial PLC input stages, infotainment power supplies, and smart meter communication interfaces requiring stable component supply and full traceability.
Supply support for BZG04-8V2TR 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 leader in discrete semiconductors, specializing in high-reliability diodes, MOSFETs, and passive components for automotive, industrial, and computing markets.
The BZG04-Series was developed specifically for high-energy transient suppression in harsh environments, emphasizing glass passivation, tight voltage tolerance, and repeatable surge performance in surface-mount form factors.
FAQ
What is the Zener voltage tolerance of the BZG04-8V2TR?
The BZG04-8V2TR has a Zener voltage tolerance of ±5 % at test current IZT = 50 mA, meaning its breakdown voltage falls between 7.79 V and 8.61 V. This tight tolerance ensures consistent clamping behavior across production lots and supports designs requiring precise overvoltage thresholds. The BZG04-8V2TR achieves this via glass-passivated junction processing and 100 % parametric screening per Vishay Document 85594 Rev. 2.2.
Can the BZG04-8V2TR be used in bidirectional configurations?
No, the BZG04-8V2TR is a unidirectional Zener diode and must be used with cathode oriented toward the protected line. Bidirectional protection requires two devices in series opposition or a dedicated bidirectional TVS like SMAJ8.0CA. Using the BZG04-8V2TR in reverse orientation (anode to line) provides no clamping function and risks forward conduction damage above 1.2 V. The BZG04-8V2TR datasheet specifies operation only in reverse-biased mode for transient suppression.
What is the maximum operating temperature for the BZG04-8V2TR?
The BZG04-8V2TR has a maximum junction temperature (TJ) of 150 °C and a storage temperature range of –65 °C to +150 °C. Continuous operation at TJ = 150 °C requires thermal design ensuring RthJA ≤ 100 K/W (e.g., mounting on Al₂O₃ ceramic) and derated power dissipation. At ambient temperatures above 50 °C, the BZG04-8V2TR's continuous power rating drops to 1.25 W per Vishay's absolute maximum ratings table.
How does the BZG04-8V2TR perform under IEC 61000-4-2 ESD testing?
The BZG04-8V2TR's ≤1 ps response time enables effective suppression of IEC 61000-4-2 contact discharges up to ±15 kV when properly laid out with short traces and low-inductance grounding. Its 1200 pF junction capacitance is compatible with low-speed data lines (e.g., LIN, RS-232), but may limit bandwidth on high-speed interfaces. System-level validation of the BZG04-8V2TR in target PCB layout is required per IEC 61000-4-2 test setup.
Is the BZG04-8V2TR suitable for 24 V industrial control applications?
Yes, the BZG04-8V2TR is commonly deployed on 24 V DC inputs in PLCs and motor drives to suppress switching transients and inductive kickback. Its 300 W surge rating (10/1000 µs) and 50 A IFSM meet IEC 61000-4-4 EFT requirements for industrial environments. However, for 24 V rails, ensure the BZG04-8V2TR is paired with upstream current limiting (e.g., series resistor or PTC) to avoid sustained conduction during overvoltage events.
BZG04-8V2TR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AC, SMA
- Series:
- BZG04
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 8.2V
- Voltage - Breakdown (Min):
- 9.4V
- Voltage - Clamping (Max) @ Ipp:
- 14.8V
- Current - Peak Pulse (10/1000µs):
- 20.3A
- Power - Peak Pulse:
- 300W
- Power Line Protection:
- No
- Applications:
- -
- Capacitance @ Frequency:
- 1200pF @ 1MHz
- Operating Temperature:
- -
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AC (SMA)
BZG04-8V2TR FAQ
1.How can I place an order for BZG04-8V2TR through Aetrix?
Please submit a Request for Quotation (RFQ) for BZG04-8V2TR 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 BZG04-8V2TR reliable?
The price and inventory of BZG04-8V2TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZG04-8V2TR is usually 5 days.
3.What payment methods are accepted for BZG04-8V2TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZG04-8V2TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZG04-8V2TR?
BZG04-8V2TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZG04-8V2TR 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 BZG04-8V2TR?
For technical support, including BZG04-8V2TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZG04-8V2TR requirements.
6.How does Aetrix verify that BZG04-8V2TR is sourced from the original manufacturer or authorized distributors?
All BZG04-8V2TR 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 BZG04-8V2TR meets industry standards.
7.What is the process for return or replacement of BZG04-8V2TR?
All BZG04-8V2TR units undergo pre-shipment inspection (PSI). If there is an issue with BZG04-8V2TR, 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 BZG04-8V2TR part is unused and in its original packaging.
Return procedure for BZG04-8V2TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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