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Vishay General Semiconductor - Diodes Division BZG04-30TR
- Part No.:
- BZG04-30TR
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
BZG04-30TR.pdf
- Description:
- TVS DIODE 30VWM 50.1VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:3,856
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Product details
Overview
BZG04-30TR from Vishay Semiconductors is a glass-passivated Zener diode designed for transient voltage suppression in power rails and signal lines. It features a 30 V standoff voltage, 50.1 V clamping voltage at 6.0 A peak pulse current, 300 W non-repetitive surge power rating, and DO-214AC (SMC) package for high-energy surge protection in industrial power supplies.
For engineers reviewing the BZG04-30TR datasheet, BZG04-30TR pinout, BZG04-30TR application, or BZG04-30TR equivalent, key selection criteria include clamping voltage tolerance, surge current capability, thermal resistance (RthJA = 125 K/W on epoxy-glass hard tissue), junction temperature limit (150 °C), and RoHS-compliant lead-free construction.
Technical Context
The BZG04-30TR operates as a unidirectional voltage-clamping device with fast response time (≤1 ps), leveraging a glass-passivated PN junction to ensure stable breakdown behavior under repetitive transients. Its design targets high-reliability protection against ESD, lightning-induced surges, and inductive switching spikes.
Thermal performance is defined by junction-to-lead resistance of 25 K/W and junction-to-ambient resistance varying from 100–150 K/W depending on PCB mounting configuration (Al₂O₃ ceramic vs. epoxy-glass). The device sustains 50 A peak forward surge current (10 ms half-sine) and 3 W steady-state power dissipation at 100 °C ambient when RthJA < 25 K/W.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Standoff Voltage (VR) | 30 V - Maximum reverse voltage before significant conduction begins; defines operating margin below clamping threshold. |
| Clamping Voltage (VCL) | 50.1 V at IPP = 6.0 A - Peak voltage seen across protected circuit during 10/1000 µs surge; critical for IC-level overvoltage margining. |
| Surge Power Rating (PZSM) | 300 W - Non-repetitive peak power handling for transient suppression; enables robust protection against IEC 61000-4-5 Level 4 surges. |
| Junction Temperature (Tj) | 150 °C - Maximum allowable silicon temperature; sets thermal derating limits for continuous operation in enclosed environments. |
| Package Type | DO-214AC (SMC) - Surface-mount case with 77 mg mass and standardized footprint for automated assembly and thermal pad routing. |
| RoHS Compliance | Lead-free per 2002/95/EC - Meets EU environmental directives; eliminates Pb contamination risk in recycling and manufacturing. |
Pinout & Package
Package: DO-214AC (SMC), molded plastic case with axial leads trimmed and formed for surface-mount use; mechanical outline per Vishay Doc. 85594 Rev. 2.2.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (Marked Band) | Reverse-biased terminal | Connected to protected line; conducts during overvoltage to clamp voltage to VCL. |
| Anode | Reference/ground terminal | Typically tied to system ground or low-impedance return path; completes clamping current loop. |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Ensures long-term stability of Zener voltage and leakage current under humidity and thermal cycling stress. |
| Fast response time ≤1 ps | Enables effective suppression of nanosecond-scale ESD events before downstream ICs experience overstress. |
| High surge current capability (50 A) | Supports compliance with IEC 61000-4-5 surge immunity testing using 2 Ω source impedance. |
| Low junction capacitance (450 pF) | Minimizes signal distortion on data lines while maintaining effective clamping on DC/low-frequency power rails. |
Applications
| Industrial Power Supply Protection | Automotive Body Control Module |
|---|---|
Use Scenario: Protecting 24 V DC input rails in programmable logic controllers against load dump and alternator ripple. IC Role / Device Role / Timing Role: Primary transient voltage suppressor placed at board edge before DC-DC converters and microcontrollers. Use Value: Clamps 50.1 V surges within 1 ps, limiting stress on downstream 36 V-rated regulators and ensuring >100,000 surge cycles without degradation. | Use Scenario: Safeguarding LIN bus transceivers and sensor inputs from battery voltage transients during cold-cranking and jump-start conditions. IC Role / Device Role / Timing Role: Unidirectional TVS diode connected between LIN line and chassis ground to absorb negative-going spikes. Use Value: Withstands 50 A surge current and maintains 30 V standoff to preserve signal integrity while meeting ISO 16750-2 pulse 5a requirements. |
| Telecom AC-DC Adapter Input Stage | Renewable Energy Inverter DC Link |
Use Scenario: Front-end protection of universal-input SMPS against AC line surges and neutral-ground potential shifts. IC Role / Device Role / Timing Role: Bidirectional clamping achieved via back-to-back configuration; BZG04-30TR used in single-diode mode for DC-side suppression. Use Value: 300 W surge rating enables compliance with UL 1449 Type 2 SPD requirements without external series impedance. | Use Scenario: Overvoltage protection on photovoltaic string inputs subjected to lightning-induced common-mode surges. IC Role / Device Role / Timing Role: Parallel-connected TVS on DC+ to DC− rail to limit differential-mode transients before MPPT controller input stage. Use Value: 125 K/W RthJA on epoxy-glass PCB allows sustained operation at 70 °C ambient with no thermal runaway under repeated 10/1000 µs pulses. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener-based transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ30A | Higher clamping voltage (53.3 V), same DO-214AA package, 600 W surge rating | Designed for higher-energy surges but less precise clamping margin for 3.3 V/5 V logic rails | Select SMBJ30A when surge energy exceeds 300 W but tighter VCL tolerance is not required. |
| P6SMB30A | Same clamping voltage (53.3 V), identical DO-214AA package, lower thermal resistance (RthJA = 100 K/W on FR4) | Optimized for cost-sensitive consumer electronics with shorter surge duration requirements | Choose P6SMB30A for high-volume production where thermal margin is prioritized over exact VCL matching. |
Compared with SMBJ30A and P6SMB30A, the BZG04-30TR offers lower clamping voltage (50.1 V vs. 53.3 V) and tighter Zener tolerance, making it preferable for protecting 30 V-rated components where voltage margin is constrained; its DO-214AC package also provides superior mechanical robustness in industrial vibration environments.
Availability
BZG04-30TR is available at Aetrix Electronics and suitable for industrial power supply protection, automotive body control modules, telecom adapter input stages, and renewable energy inverter DC link circuits requiring stable component supply and long-term obsolescence management.
Supply support for BZG04-30TR 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, optoelectronics, and passive components for industrial, automotive, and computing markets.
The BZG04-Series was developed specifically for high-energy transient suppression in harsh-environment applications, emphasizing glass passivation, surge endurance, and tight parametric consistency across voltage grades.
FAQ
What is the maximum clamping voltage of the BZG04-30TR under standard test conditions?
The BZG04-30TR has a maximum clamping voltage of 50.1 V when subjected to a 10/1000 µs surge waveform at a peak current of 6.0 A. This value is measured at Tj = 25 °C and defines the upper voltage limit imposed on protected circuits during transient events. The BZG04-30TR achieves this clamping performance while maintaining low leakage and stable Zener characteristics due to its glass-passivated junction structure.
Is the BZG04-30TR suitable for bidirectional transient protection?
No, the BZG04-30TR is a unidirectional Zener diode intended for reverse-biased clamping only. For bidirectional protection, two BZG04-30TR devices must be connected in series opposition, or a dedicated bidirectional TVS such as SMAJ30CA should be selected. The BZG04-30TR's electrical specifications-including VR = 30 V and VCL = 50.1 V-are defined for single-polarity operation, and forward conduction is limited to VF = 1.2 V at 0.5 A.
What is the thermal resistance from junction to ambient for the BZG04-30TR on a standard PCB layout?
The BZG04-30TR exhibits a junction-to-ambient thermal resistance (RthJA) of 125 K/W when mounted on epoxy-glass hard tissue per Figure 1b in Vishay Document 85594. This value assumes standard SMC footprint with copper pour and is critical for calculating safe power derating above 25 °C ambient. The BZG04-30TR's RthJA improves to 100 K/W on Al₂O₃ ceramic substrates, enabling higher sustained power in thermally demanding applications.
Does the BZG04-30TR meet RoHS and lead-free requirements?
Yes, the BZG04-30TR is a lead-free component compliant with RoHS Directive 2002/95/EC and WEEE Directive 2002/96/EC. Vishay confirms that no ozone-depleting substances are used in its manufacture, and the device carries the "e3" marking indicating matte tin termination. The BZG04-30TR supports reflow soldering profiles compatible with Pb-free assembly processes without compromising Zener voltage stability or surge performance.
How does the BZG04-30TR compare to the BZG04-30TR3 variant?
The BZG04-30TR and BZG04-30TR3 share identical electrical and thermal specifications, differing only in packaging: BZG04-30TR ships on a 7-inch reel with 1.5 k units, while BZG04-30TR3 uses a 13-inch reel containing 6 k units per reel (6 k/box). Both variants use the same DO-214AC package and are functionally interchangeable in design; the choice depends solely on production volume and pick-and-place feeder compatibility. The BZG04-30TR remains the standard orderable part for medium-volume prototyping and pilot runs.
BZG04-30TR 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):
- 30V
- Voltage - Breakdown (Min):
- 34V
- Voltage - Clamping (Max) @ Ipp:
- 50.1V
- Current - Peak Pulse (10/1000µs):
- 6A
- Power - Peak Pulse:
- 300W
- Power Line Protection:
- No
- Applications:
- -
- Capacitance @ Frequency:
- 450pF @ 1MHz
- Operating Temperature:
- -
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AC (SMA)
BZG04-30TR FAQ
1.How can I place an order for BZG04-30TR through Aetrix?
Please submit a Request for Quotation (RFQ) for BZG04-30TR 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 BZG04-30TR reliable?
The price and inventory of BZG04-30TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZG04-30TR is usually 5 days.
3.What payment methods are accepted for BZG04-30TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZG04-30TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZG04-30TR?
BZG04-30TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZG04-30TR 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 BZG04-30TR?
For technical support, including BZG04-30TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZG04-30TR requirements.
6.How does Aetrix verify that BZG04-30TR is sourced from the original manufacturer or authorized distributors?
All BZG04-30TR 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 BZG04-30TR meets industry standards.
7.What is the process for return or replacement of BZG04-30TR?
All BZG04-30TR units undergo pre-shipment inspection (PSI). If there is an issue with BZG04-30TR, 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 BZG04-30TR part is unused and in its original packaging.
Return procedure for BZG04-30TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZG04-30TR Tags
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