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Vishay General Semiconductor - Diodes Division BZG04-150TR
- Part No.:
- BZG04-150TR
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
BZG04-150TR.pdf
- Description:
- TVS DIODE 150VWM 249VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:5,774
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Product details
Overview
BZG04-150TR from Vishay Semiconductors is a glass-passivated, high-reliability Zener diode designed for transient voltage suppression in power rails and signal lines. It features a 150 V standoff voltage, 249 V clamping voltage at 1.2 A peak pulse current, 300 W non-repetitive surge power rating, and DO-214AC (SMA) package with 77 mg mass. It is used in industrial power supply overvoltage protection circuits.
For engineers reviewing the BZG04-150TR datasheet, BZG04-150TR pinout, BZG04-150TR application, or BZG04-150TR equivalent, key selection criteria include clamping voltage margin versus system rail, surge current capability under 10/1000 µs waveform, thermal resistance to PCB pad layout, junction temperature limit of 150 °C, and RoHS-compliant lead-free construction.
Technical Context
The BZG04-150TR operates as a unidirectional voltage clamp, leveraging avalanche breakdown at precisely defined reverse bias to divert transient energy away from sensitive downstream circuitry. Its fast response time (≤ 1 ps) ensures effective suppression of nanosecond-scale ESD and lightning-induced surges.
Thermal performance depends on mounting: RthJA ranges from 100 K/W (on Al₂O₃ ceramic) to 150 K/W (on epoxy-glass hard tissue), directly impacting sustained power handling. The device sustains 50 A peak forward surge current for 10 ms half-sine wave and 300 W non-repetitive surge power under 10/1000 µs pulse conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Standoff Voltage (VR) | 150 V - Maximum continuous reverse voltage before significant leakage; defines operating rail margin. |
| Clamping Voltage (VCL) | 249 V @ IPP = 1.2 A (10/1000 µs) - Peak voltage seen by protected circuit during surge event. |
| Surge Power (PZSM) | 300 W - Maximum single-pulse energy dissipation capability under standard test waveform. |
| Junction Temp (Tj) | 150 °C - Absolute maximum operating temperature; dictates thermal design headroom. |
| Package | DO-214AC (SMA) - Surface-mount case with standardized footprint and thermal pad compatibility. |
| Leakage Current (IR) | 5 µA @ VR = 150 V - Low standby power loss and minimal loading on high-impedance nodes. |
| Capacitance (Cj) | 140 pF @ 0 V, 1 MHz - Limits high-frequency signal integrity impact in data line protection. |
Pinout & Package
DO-214AC (SMA) package: molded plastic body with axial leads trimmed and formed for surface-mount soldering; cathode indicated by band; typical weight 77 mg.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal | Connected to lower-potential side (e.g., ground or return path) in clamping configuration. |
| Cathode | Reverse-biased Zener terminal | Connected to protected node (e.g., +150 V rail); avalanche conduction occurs here during overvoltage. |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Enables stable Zener voltage and low leakage across temperature and lifetime without hermetic sealing. |
| Fast response time ≤ 1 ps | Ensures clamping activation before transient energy couples into IC inputs or power stages. |
| Lead (Pb)-free & RoHS compliant | Meets EU Directive 2002/95/EC and WEEE 2002/96/EC; suitable for global commercial and industrial shipments. |
| High surge current rating (50 A) | Supports robust protection against IEC 61000-4-5 Level 4 (4 kV/2 Ω) surge events in AC/DC front-ends. |
Applications
| Industrial Power Supply Protection | Telecom Line Interface Protection |
|---|---|
Use Scenario: 150 V DC intermediate bus in programmable logic controller (PLC) power module exposed to load dump and inductive switching transients. IC Role / Device Role / Timing Role: Unidirectional transient voltage suppressor placed between bus rail and chassis ground. Use Value: Clamps surges to ≤249 V, preserving downstream DC-DC converter input stage rated for 250 V absolute max. | Use Scenario: -48 V telecom central office line card with tip/ring interface susceptible to lightning-induced common-mode surges. IC Role / Device Role / Timing Role: Standoff-rated Zener clamp on feed resistor network to limit voltage excursion on SLIC interface. Use Value: Withstands 300 W surge pulses while maintaining <5 µA leakage at nominal -48 V, minimizing quiescent power loss. |
| Automotive Body Control Module (BCM) | Renewable Energy Inverter DC Link |
Use Scenario: 12 V battery-supplied BCM subsystem experiencing load dump up to 120 V per ISO 7637-2 Pulse 5a. IC Role / Device Role / Timing Role: Secondary overvoltage clamp after primary TVS, providing precise 150 V threshold with tight tolerance. Use Value: 150 V standoff allows safe margin above 120 V pulse peak while enabling compact DO-214AC placement near microcontroller power pins. | Use Scenario: 600 V DC link in solar inverter where auxiliary control supply derives from tapped voltage divider. IC Role / Device Role / Timing Role: Zener reference and overvoltage limiter for 150 V auxiliary rail feeding gate drivers and sensors. Use Value: Stable 150 V regulation with ±5 % tolerance and 0.09 %/K tempco enables accurate sensing and timing in high-temperature environments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ150A | Higher clamping voltage (243 V vs. 249 V), same DO-214AA package, 600 W Ppp rating | Designed for higher-energy IEC 61000-4-5 surges; less precise voltage tolerance (±5 % vs. ±5 %) | Select SMBJ150A when higher surge energy handling is required and board space permits larger DO-214AA footprint. |
| P6SMB150A | Same clamping voltage (249 V), identical DO-214AA package, 600 W Ppp, but higher IR (10 µA vs. 5 µA) | Broader industrial qualification; slightly higher leakage may affect ultra-low-power monitoring circuits | Choose P6SMB150A for extended temperature range (-65 °C to +175 °C) and automotive-qualified variants. |
Compared with SMBJ150A and P6SMB150A, the BZG04-150TR offers tighter thermal resistance control (RthJA = 125–150 K/W specified per mounting method), lower leakage (5 µA), and optimized response for fast-rising transients-making it preferred for precision-clamp applications where layout-constrained thermal management is critical.
Availability
BZG04-150TR is available at Aetrix Electronics and suitable for industrial power supply protection, telecom line interface hardening, and renewable energy inverter auxiliary rail stabilization requiring stable component supply and traceable sourcing.
Supply support for BZG04-150TR 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 manufacturer of discrete semiconductors, specializing in diodes, MOSFETs, optoelectronics, and passive components with emphasis on reliability and high-performance specifications.
The BZG04-Series targets high-energy transient suppression in harsh environments, with design focus on stable Zener voltage, low leakage, and repeatable clamping behavior across temperature and surge cycles.
FAQ
What is the maximum clamping voltage of the BZG04-150TR under standard surge conditions?
The BZG04-150TR has a maximum clamping voltage of 249 V when subjected to a 10/1000 µs surge pulse at 1.2 A peak current. This value is measured per IEC 61000-4-5 test methodology and defines the upper voltage limit imposed on protected circuitry during transient events. The BZG04-150TR maintains this clamping performance consistently across its qualified operating temperature range.
Is the BZG04-150TR suitable for bidirectional transient suppression?
No, the BZG04-150TR is a unidirectional Zener diode intended for reverse-bias clamping only. It does not provide symmetrical protection for both polarities. For bidirectional applications, a pair of BZG04-150TR devices in series opposition or a dedicated bidirectional TVS such as SMAJ150A would be required. The BZG04-150TR's cathode-band marking indicates polarity-sensitive placement.
What is the thermal resistance from junction to ambient for the BZG04-150TR on standard FR-4 PCB?
When mounted on epoxy-glass hard tissue (FR-4) per Figure 1a in the datasheet, the BZG04-150TR exhibits a junction-to-ambient thermal resistance (RthJA) of 150 K/W. With enhanced copper pour per Figure 1b, RthJA improves to 125 K/W. These values assume standard 35 µm copper thickness and define the maximum steady-state power dissipation achievable without exceeding 150 °C junction temperature.
Does the BZG04-150TR meet RoHS and lead-free requirements?
Yes, the BZG04-150TR is lead (Pb)-free and complies with the EU RoHS Directive 2002/95/EC and WEEE Directive 2002/96/EC. Vishay confirms that no ozone-depleting substances are used in its manufacture. The BZG04-150TR carries the "e3" termination code indicating matte tin plating and full environmental compliance for global commercial deployment.
How does the BZG04-150TR compare to standard 1N4744A Zener diodes in surge handling?
The BZG04-150TR delivers 300 W non-repetitive surge power (PZSM) and 50 A peak forward surge current-orders of magnitude higher than the 1N4744A's ~1.3 W steady-state rating and lack of surge specification. Unlike general-purpose Zeners, the BZG04-150TR is engineered specifically for transient suppression with controlled clamping, fast response, and validated surge endurance. The BZG04-150TR is not a drop-in replacement for 1N4744A in voltage-reference roles.
BZG04-150TR 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):
- 150V
- Voltage - Breakdown (Min):
- 168V
- Voltage - Clamping (Max) @ Ipp:
- 249V
- Current - Peak Pulse (10/1000µs):
- 1.2A
- Power - Peak Pulse:
- 300W
- Power Line Protection:
- No
- Applications:
- -
- Capacitance @ Frequency:
- 140pF @ 1MHz
- Operating Temperature:
- -
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AC (SMA)
BZG04-150TR FAQ
1.How can I place an order for BZG04-150TR through Aetrix?
Please submit a Request for Quotation (RFQ) for BZG04-150TR 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 BZG04-150TR reliable?
The price and inventory of BZG04-150TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZG04-150TR is usually 5 days.
3.What payment methods are accepted for BZG04-150TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZG04-150TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZG04-150TR?
BZG04-150TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZG04-150TR 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 BZG04-150TR?
For technical support, including BZG04-150TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZG04-150TR requirements.
6.How does Aetrix verify that BZG04-150TR is sourced from the original manufacturer or authorized distributors?
All BZG04-150TR 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 BZG04-150TR meets industry standards.
7.What is the process for return or replacement of BZG04-150TR?
All BZG04-150TR units undergo pre-shipment inspection (PSI). If there is an issue with BZG04-150TR, 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 BZG04-150TR part is unused and in its original packaging.
Return procedure for BZG04-150TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZG04-150TR Tags
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