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Vishay General Semiconductor - Diodes Division BZG04-68TR
- Part No.:
- BZG04-68TR
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
BZG04-68TR.pdf
- Description:
- TVS DIODE 68VWM 114VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:6,636
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Product details
Overview
BZG04-68TR from Vishay Semiconductors is a glass-passivated, surface-mount Zener diode designed for transient voltage suppression in high-energy surge environments. It features a nominal standoff voltage of 68 V, a minimum breakdown voltage of 77 V at 10 mA, a clamping voltage of 114 V at 2.6 A (10/1000 µs pulse), 300 W non-repetitive peak surge power capability, and DO-214AC package compatibility - deployed in DC power rail protection for industrial motor drives.
For engineers reviewing the BZG04-68TR datasheet, BZG04-68TR pinout, BZG04-68TR application, or BZG04-68TR equivalent, key selection criteria include verified clamping performance under 10/1000 µs transients, thermal resistance to ambient (125 K/W on epoxy-glass hard tissue), junction temperature limit (150 °C), and RoHS-compliant lead-free construction.
Technical Context
The BZG04-68TR operates as a unidirectional voltage-clamping device with a fast response time ≤ 1 ps from 0 to VZmin, enabling effective suppression of ESD and lightning-induced surges. Its glass-passivated junction ensures stable Zener characteristics and high reliability across temperature extremes.
Thermal management relies on defined mounting configurations: RthJA is 125 K/W when mounted per Figure 1b on epoxy-glass hard tissue, and 100 K/W on Al2O3 ceramic - critical for sustained surge duty cycles. Junction-to-lead thermal resistance is fixed at 25 K/W.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Standoff Voltage (VR) | 68 V - maximum continuous reverse voltage before significant leakage current begins |
| Breakdown Voltage (VBR) | 77 V min @ 10 mA - guaranteed conduction threshold under standardized test current |
| Clamping Voltage (VCL) | 114 V @ 2.6 A, 10/1000 µs - peak voltage seen by protected circuit during specified surge event |
| Non-repetitive Surge Power | 300 W - maximum single-pulse energy dissipation capability without failure |
| Junction Temperature Limit | 150 °C - absolute maximum operating temperature defining thermal derating envelope |
| Package Type | DO-214AC (SMA) - industry-standard surface-mount outline with defined thermal pad layout |
| RoHS Compliance | Fully compliant per 2002/95/EC - lead-free construction with no restricted substances above thresholds |
Pinout & Package
Package: DO-214AC (SMA), molded plastic case with axial leads trimmed and formed for surface-mount soldering; weight ≈ 77 mg.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (marked end) | Surge current sink | Connected to protected line; conducts transient energy to ground reference during overvoltage |
| Anode | Reference node | Typically tied to system ground or low-impedance return path; completes clamping loop |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Ensures long-term stability of Zener voltage and leakage current under humidity and thermal cycling |
| Fast response time ≤ 1 ps | Enables clamping before transient energy couples into sensitive downstream circuitry |
| 300 W peak surge power (10/1000 µs) | Supports IEC 61000-4-5 Level 4 surge immunity compliance in industrial interfaces |
| DO-214AC package | Provides standardized thermal path and board-level reliability for automated SMT assembly |
| Lead (Pb)-free & RoHS-compliant | Meets global environmental regulations without requiring special handling or exemptions |
Applications
| Industrial Motor Drive Protection | DC Power Supply Input Clamping |
|---|---|
Use Scenario: Suppresses switching transients generated by IGBTs in three-phase inverters feeding AC induction motors. IC Role / Device Role / Timing Role: Unidirectional transient voltage suppressor placed across DC bus rails to clamp inductive kickback spikes. Use Value: Limits voltage excursions to ≤114 V during 2.6 A surges, preventing gate oxide damage to power semiconductors rated for 120 V max. |
Use Scenario: Protects input stage of 48 V telecom rectifier modules against lightning-induced surges on outdoor feeder lines. IC Role / Device Role / Timing Role: Primary clamping element in Class III surge protection circuit per IEC 61643-31. Use Value: Delivers 300 W single-pulse energy absorption while maintaining <5 µA leakage at 68 V, minimizing standby loss. |
| Programmable Logic Controller I/O Protection | Renewable Energy Inverter DC Link |
Use Scenario: Shields 24 V digital input channels from field-wiring induced transients in factory automation cabinets. IC Role / Device Role / Timing Role: Standoff-rated Zener placed between signal line and chassis ground to shunt ESD and inductive coupling. Use Value: Clamps 8 kV contact ESD events to <114 V within ≤1 ps, preserving signal integrity of optocoupler inputs. |
Use Scenario: Guards DC link capacitors in solar string inverters against grid-switching transients and capacitor bank resonance spikes. IC Role / Device Role / Timing Role: Secondary overvoltage limiter parallel to main MOV stack, providing precise 68 V threshold control. Use Value: Offers tighter voltage tolerance (±1.5 % typical VZ drift) than MOVs, reducing risk of premature capacitor overvoltage stress. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ68A | Higher clamping voltage (113 V min @ 2.6 A), same DO-214AA package, lower surge rating (600 W vs. 300 W peak) | Designed for bidirectional surge suppression; requires external polarity handling for unidirectional use | Select SMBJ68A only if bidirectional protection or higher surge margin is required; verify PCB footprint compatibility (DO-214AA vs. DO-214AC) |
| P6KE68A | Through-hole DO-15 package, 300 W rating, clamping voltage 118 V @ 2.2 A, slower response (>1 ns) | Intended for prototyping or legacy through-hole designs; lacks SMT thermal efficiency | Choose P6KE68A for manual assembly or cost-sensitive non-SMT applications; expect 25 % higher RthJA due to leadframe thermal path |
Compared with SMBJ68A and P6KE68A, the BZG04-68TR delivers tighter clamping (114 V), faster response (≤1 ps), and optimized SMT thermal performance (RthJA = 125 K/W), making it preferred for space-constrained, high-reliability industrial power electronics.
Availability
BZG04-68TR is available at Aetrix Electronics and suitable for industrial motor drives, DC power supply input clamping, and programmable logic controller I/O protection requiring stable component supply and full traceability.
Supply support for BZG04-68TR 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 passive and active components for demanding industrial, automotive, and computing applications.
The BZG04-Series was engineered specifically for robust transient voltage suppression in harsh electromagnetic environments, emphasizing stable Zener parameters, surge survivability, and RoHS-compliant manufacturability.
FAQ
What is the maximum clamping voltage of the BZG04-68TR under standard surge conditions?
The BZG04-68TR has a maximum clamping voltage of 114 V when subjected to a 10/1000 µs surge pulse at 2.6 A, as specified in the Electrical Characteristics table. This value defines the upper voltage limit imposed on protected circuitry during transient events and is measured with the device mounted per Figure 1b configuration. The BZG04-68TR maintains this clamping performance across its qualified operating temperature range.
Is the BZG04-68TR suitable for bidirectional transient suppression?
No, the BZG04-68TR is a unidirectional Zener diode intended for reverse-biased clamping only. It does not provide symmetrical clamping for both polarities. For bidirectional protection, a pair of BZG04-68TR devices in series opposition or a dedicated bidirectional TVS like SMBJ68CA would be required. The BZG04-68TR datasheet specifies parameters exclusively for reverse operation.
What is the thermal resistance from junction to ambient for the BZG04-68TR in standard mounting?
The BZG04-68TR exhibits a junction-to-ambient thermal resistance (RthJA) of 125 K/W when mounted on epoxy-glass hard tissue per Figure 1b in the datasheet. This value assumes a defined copper pad layout and is critical for calculating safe power derating. Mounting on Al2O3 ceramic reduces RthJA to 100 K/W, while free-air conditions yield significantly higher resistance.
Does the BZG04-68TR meet RoHS requirements?
Yes, the BZG04-68TR is certified lead (Pb)-free and fully compliant with the EU RoHS Directive 2002/95/EC and WEEE Directive 2002/96/EC. Vishay explicitly states compliance in the datasheet Features section and confirms absence of ozone-depleting substances. No exemptions apply, and the device carries standard RoHS marking per manufacturing lot traceability.
What is the minimum breakdown voltage specification for the BZG04-68TR?
The BZG04-68TR has a minimum breakdown voltage (VBR) of 77 V at a test current of 10 mA, as confirmed in the Electrical Characteristics table. This parameter guarantees that the device will begin conducting in the reverse breakdown region no earlier than 77 V, ensuring reliable standoff behavior up to its rated 68 V reverse voltage. The BZG04-68TR also specifies a typical VBR of 81 V under the same conditions.
BZG04-68TR 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):
- 68V
- Voltage - Breakdown (Min):
- 77V
- Voltage - Clamping (Max) @ Ipp:
- 114V
- Current - Peak Pulse (10/1000µs):
- 2.6A
- Power - Peak Pulse:
- 300W
- Power Line Protection:
- No
- Applications:
- -
- Capacitance @ Frequency:
- 275pF @ 1MHz
- Operating Temperature:
- -
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AC (SMA)
BZG04-68TR FAQ
1.How can I place an order for BZG04-68TR through Aetrix?
Please submit a Request for Quotation (RFQ) for BZG04-68TR 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 BZG04-68TR reliable?
The price and inventory of BZG04-68TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZG04-68TR is usually 5 days.
3.What payment methods are accepted for BZG04-68TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZG04-68TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZG04-68TR?
BZG04-68TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZG04-68TR 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 BZG04-68TR?
For technical support, including BZG04-68TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZG04-68TR requirements.
6.How does Aetrix verify that BZG04-68TR is sourced from the original manufacturer or authorized distributors?
All BZG04-68TR 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 BZG04-68TR meets industry standards.
7.What is the process for return or replacement of BZG04-68TR?
All BZG04-68TR units undergo pre-shipment inspection (PSI). If there is an issue with BZG04-68TR, 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 BZG04-68TR part is unused and in its original packaging.
Return procedure for BZG04-68TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZG04-68TR Tags
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