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Vishay General Semiconductor - Diodes Division BZG04-75TR3
- Part No.:
- BZG04-75TR3
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
BZG04-75TR3.pdf
- Description:
- TVS DIODE 75VWM 126VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:4,499
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Product details
Overview
BZG04-75TR3 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 75 V standoff voltage, 300 W non-repetitive peak surge power (10/1000 µs), 2.4 pF junction capacitance at 0 V, 150 °C max junction temperature, and DO-214AC (SMC) package - used in industrial power supply overvoltage clamping.
For engineers reviewing the BZG04-75TR3 datasheet, BZG04-75TR3 pinout, BZG04-75TR3 application, or BZG04-75TR3 equivalent, key selection criteria include clamping voltage (126 V @ 2.4 A), thermal resistance (100 K/W on Al₂O₃ ceramic), surge current capability (50 A half-sine), and RoHS-compliant lead-free construction.
Technical Context
The BZG04-75TR3 operates as a unidirectional voltage-clamping device with fast response time (≤1 ps), leveraging glass-passivated junction technology to ensure stable breakdown behavior under repetitive transients. Its low dynamic impedance and tight tolerance (±5 % on VZ) support precise regulation in protection circuits.
Designed for surface-mount mounting on epoxy-glass or alumina substrates, it delivers 100 K/W thermal resistance when mounted on Al₂O₃ ceramic (Fig. 1b), enabling reliable power dissipation up to 1.25 W at 50 °C ambient with RthJA < 100 K/W - critical for compact industrial DC-DC converter designs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Standoff Voltage (VR) | 75 V - defines maximum continuous reverse voltage before conduction begins; sets operating margin for 48 V–60 V DC bus protection. |
| Clamping Voltage (VCL) | 126 V @ 2.4 A (10/1000 µs) - actual voltage seen by protected circuit during surge; ensures downstream ICs remain below absolute max ratings. |
| Junction Capacitance | 2.6 pF @ 0 V, 1 MHz - minimal loading on high-speed signal lines; suitable for CAN, RS-485, and sensor interface protection without bandwidth degradation. |
| Peak Surge Power | 300 W (10/1000 µs) - enables robust handling of IEC 61000-4-5 Level 4 surges (4 kV line-earth) without degradation. |
| Thermal Resistance (RthJA) | 100 K/W on Al₂O₃ ceramic - allows sustained 1.25 W dissipation at 50 °C ambient; supports thermally constrained PCB layouts. |
| Surge Current (IFSM) | 50 A (10 ms half-sine) - withstands motor-commutation spikes and relay-coil flyback events in PLC I/O modules. |
Pinout & Package
Package: DO-214AC (SMC), surface-mount, molded plastic case with cathode band marking; dimensions per Vishay spec 19628; weight ≈ 77 mg.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry terminal during forward bias or surge conduction path | Connected to ground or low-impedance return path; must be routed with low-inductance trace for effective clamping. |
| Cathode | Current exit terminal during reverse-bias clamping | Connected to protected node (e.g., DC rail); polarity marking (band) must align with system ground reference. |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Eliminates moisture-induced parameter drift and improves long-term stability in humid industrial environments. |
| Fast response time ≤1 ps | Clamps ESD and lightning-induced transients before sensitive logic or analog circuitry sustains damage. |
| Lead (Pb)-free & RoHS-compliant | Meets EU Directive 2002/95/EC and WEEE 2002/96/EC; supports global manufacturing compliance without requalification. |
| High reliability rating | Validated for >10⁵ surge cycles under specified conditions; reduces field failure risk in mission-critical power systems. |
Applications
| Industrial Power Supply Protection | Automotive Body Control Module (BCM) |
|---|---|
Use Scenario: Clamping 48 V DC bus against load-dump transients in programmable logic controller (PLC) power stages. IC Role / Device Role / Timing Role: Unidirectional transient voltage suppressor placed between rail and chassis ground. Use Value: Limits voltage to 126 V during 2.4 A surge, protecting 150 V-rated MOSFETs and gate drivers without derating. |
Use Scenario: Protecting LIN bus transceivers from battery voltage spikes during alternator load dump. IC Role / Device Role / Timing Role: Standoff clamp on LIN VCC input, activated only above 75 V threshold. Use Value: 2.6 pF capacitance avoids signal distortion on 20 kbps LIN; 300 W surge rating exceeds ISO 7637-2 Pulse 5a requirements. |
| Telecom DC Feeder Protection | Renewable Energy Inverter DC Link |
Use Scenario: Safeguarding PoE midspan injectors against induced surges on 57 V DC feed lines. IC Role / Device Role / Timing Role: Primary overvoltage clamp on output side of DC-DC isolation stage. Use Value: 100 K/W RthJA on ceramic substrate maintains <125 °C junction temp during repeated 10/1000 µs events. |
Use Scenario: Suppressing switching transients on 600 V DC link of solar string inverters during IGBT turn-off. IC Role / Device Role / Timing Role: Secondary clamping element parallel to bulk MOV, handling fast-rising edge components. Use Value: ≤1 ps response captures sub-microsecond dv/dt spikes missed by slower MOVs; extends overall protection bandwidth. |
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 |
|---|---|---|---|
| SMBJ75A | Higher clamping voltage (123 V @ 3.2 A), same DO-214AA package, lower surge rating (600 W vs. 300 W) | Designed for higher-energy IEC 61000-4-5 surges; less suitable for space-constrained layouts due to larger SMB footprint | Select SMBJ75A only if system-level surge testing requires >300 W rating and board area permits larger package. |
| P6SMB75A | Same 75 V standoff, but 600 W peak power, DO-214AA package, higher junction capacitance (45 pF) | Higher capacitance limits use to low-frequency power rails; unsuitable for data-line protection | Choose P6SMB75A for cost-sensitive AC/DC front-end protection where signal integrity is not required. |
Compared with SMBJ75A and P6SMB75A, the BZG04-75TR3 offers superior high-frequency performance (2.6 pF) and tighter thermal management (100 K/W on Al₂O₃), making it optimal for compact, high-speed, and thermally demanding industrial electronics - despite lower peak power than alternatives.
Availability
BZG04-75TR3 is available at Aetrix Electronics and suitable for industrial power supply protection, automotive body control modules, telecom DC feeder systems, and renewable energy inverter DC links requiring stable component supply and full RoHS compliance.
Supply support for BZG04-75TR3 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 industrial, automotive, and computing markets.
The BZG04-Series was developed specifically for high-energy transient suppression in harsh-environment power electronics, emphasizing glass passivation, low capacitance, and repeatable clamping performance across temperature and life cycle.
FAQ
What is the maximum clamping voltage of the BZG04-75TR3 under standard surge conditions?
The BZG04-75TR3 has a maximum clamping voltage of 126 V when subjected to a 10/1000 µs surge waveform at 2.4 A peak current, as specified in Vishay's Document 85594 Rev. 2.2. This value ensures protected circuits remain within safe operating limits during standardized transient events. The BZG04-75TR3 achieves this with low dynamic impedance and tight VZ tolerance, making it suitable for precision rail protection.
Is the BZG04-75TR3 compatible with lead-free reflow soldering processes?
Yes, the BZG04-75TR3 is fully compatible with lead-free reflow soldering per JEDEC J-STD-020. Its glass-passivated junction and DO-214AC package withstand peak temperatures up to 260 °C for 10 seconds. Vishay confirms RoHS compliance and Pb-free construction in Document 85594, and the BZG04-75TR3 is rated for standard IPC-A-610 Class 2 and Class 3 assembly. Always verify profile with actual board thermal mass.
How does the thermal resistance of the BZG04-75TR3 vary with PCB mounting method?
The BZG04-75TR3 exhibits RthJA = 100 K/W when mounted on Al₂O₃ ceramic (Fig. 1b), 125 K/W on epoxy-glass hard tissue (Fig. 1b), and 150 K/W on epoxy-glass hard tissue (Fig. 1a), per Vishay's thermal characterization. These values directly impact allowable power dissipation: at 50 °C ambient, 1.25 W is permitted only with RthJA < 100 K/W. The BZG04-75TR3 datasheet specifies all three configurations to guide layout decisions.
Can the BZG04-75TR3 be used for bidirectional transient suppression?
No, the BZG04-75TR3 is a unidirectional Zener diode intended for single-polarity clamping - it conducts only when cathode voltage exceeds anode by ≥75 V. For bidirectional protection (e.g., AC lines or differential data buses), a pair of BZG04-75TR3 devices in series opposition or a dedicated bidirectional TVS like SMAJ75CA is required. The BZG04-75TR3 datasheet explicitly defines it as a unidirectional device with cathode band marking.
What is the typical junction capacitance of the BZG04-75TR3 and why does it matter?
The BZG04-75TR3 has a typical junction capacitance of 2.6 pF measured at 0 V and 1 MHz, per Vishay's Electrical Characteristics table. This low value minimizes signal loading and preserves rise/fall times in high-speed interfaces such as CAN FD, RS-485, and sensor analog outputs. Because the BZG04-75TR3 is often placed directly at connector entrances, its 2.6 pF enables effective ESD protection without compromising data integrity.
BZG04-75TR3 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):
- 75V
- Voltage - Breakdown (Min):
- 85V
- Voltage - Clamping (Max) @ Ipp:
- 126V
- Current - Peak Pulse (10/1000µs):
- 2.4A
- Power - Peak Pulse:
- 300W
- Power Line Protection:
- No
- Applications:
- -
- Capacitance @ Frequency:
- 260pF @ 1MHz
- Operating Temperature:
- -
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AC (SMA)
BZG04-75TR3 FAQ
1.How can I place an order for BZG04-75TR3 through Aetrix?
Please submit a Request for Quotation (RFQ) for BZG04-75TR3 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 BZG04-75TR3 reliable?
The price and inventory of BZG04-75TR3 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZG04-75TR3 is usually 5 days.
3.What payment methods are accepted for BZG04-75TR3?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZG04-75TR3 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZG04-75TR3?
BZG04-75TR3 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZG04-75TR3 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 BZG04-75TR3?
For technical support, including BZG04-75TR3 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZG04-75TR3 requirements.
6.How does Aetrix verify that BZG04-75TR3 is sourced from the original manufacturer or authorized distributors?
All BZG04-75TR3 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 BZG04-75TR3 meets industry standards.
7.What is the process for return or replacement of BZG04-75TR3?
All BZG04-75TR3 units undergo pre-shipment inspection (PSI). If there is an issue with BZG04-75TR3, 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 BZG04-75TR3 part is unused and in its original packaging.
Return procedure for BZG04-75TR3:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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