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Vishay General Semiconductor - Diodes Division BZG04-75TR
- Part No.:
- BZG04-75TR
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
BZG04-75TR.pdf
- Description:
- TVS DIODE 75VWM 126VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:9,639
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Product details
Overview
BZG04-75TR from Vishay Semiconductors is a glass-passivated, surface-mount Zener diode designed for high-energy transient voltage suppression in power rails and signal lines. It features a nominal Zener voltage of 75 V, 300 W non-repetitive peak surge power (10/1000 µs), 5 µA maximum reverse leakage at 60 V, 126 V clamping voltage at 2.4 A peak pulse current, and DO-214AC (SMC) package for industrial-grade surge protection.
For engineers reviewing the BZG04-75TR datasheet, BZG04-75TR pinout, BZG04-75TR application, or BZG04-75TR equivalent, key selection criteria include standoff voltage tolerance, clamping ratio, thermal resistance to ambient (125 K/W on epoxy-glass hard tissue), surge current capability (50 A forward surge), and RoHS-compliant lead-free construction.
Technical Context
The BZG04-75TR operates as a unidirectional voltage clamp with precise breakdown at 75 V ±5 % (85 V min, 94 V max at 5 mA), enabling reliable overvoltage protection in DC power supplies and interface circuits. Its fast response time (≤1 ps) ensures effective suppression of ESD and lightning-induced transients before downstream components are stressed.
Thermal design relies on low junction-to-lead resistance (25 K/W) and configurable junction-to-ambient performance (100–150 K/W depending on PCB mounting), supporting stable operation up to 150 °C junction temperature under repetitive surge conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 75 V nominal, 85–94 V range at IZT = 5 mA - defines precise clamping threshold for 75-V rail protection |
| Clamping Voltage (VCL) | 126 V at IPP = 2.4 A (10/1000 µs) - determines maximum voltage seen by protected circuit during surge |
| Peak Surge Power | 300 W (10/1000 µs) - supports high-energy transient absorption without failure |
| Reverse Leakage (IR) | 5 µA max at VR = 60 V - ensures minimal standby power loss and signal integrity in high-impedance nodes |
| Junction Temp. Limit | 150 °C - enables operation in automotive engine compartments and industrial enclosures |
| Package | DO-214AC (SMC) - industry-standard SMD outline with 77 mg mass and proven thermal/mechanical reliability |
Pinout & Package
DO-214AC (SMC) package: molded plastic body, cathode band marking, 2.54 mm lead spacing, 7.11 mm × 6.22 mm footprint, 2.39 mm height. Designed for reflow soldering per J-STD-020.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction path / surge current sink | Connected to ground or low-impedance return; carries full surge current during clamping |
| Cathode | Zener reference node / voltage sensing input | Connected to protected line; sets clamping threshold relative to anode potential |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Enables stable Zener characteristics and long-term reliability under humidity and thermal cycling |
| Fast response time ≤1 ps | Minimizes voltage overshoot during nanosecond-scale ESD events (IEC 61000-4-2) |
| Lead (Pb)-free & RoHS compliant | Meets EU Directive 2002/95/EC and WEEE 2002/96/EC for environmentally responsible manufacturing |
| High surge current rating | 50 A peak forward surge (10 ms half-sine) supports robust protection in AC/DC front-end stages |
Applications
| Industrial Motor Drives | Telecom Power Supplies |
|---|---|
Use Scenario: Protection of gate drivers and feedback sensors against switching transients in 48-V and 72-V motor control inverters. IC Role / Device Role / Timing Role: Unidirectional voltage clamp placed across DC bus or isolated gate supply rails. Use Value: Limits transient overvoltage to ≤126 V, preventing MOSFET gate oxide rupture and op-amp input damage during IGBT turn-off. | Use Scenario: Input-stage surge suppression in -48 V telecom rectifier modules exposed to lightning-induced surges on distribution lines. IC Role / Device Role / Timing Role: Primary clamping element in parallel with bulk capacitor, triggered before TVS diode array reaches breakdown. Use Value: Absorbs 300 W peak energy (10/1000 µs) without degradation, maintaining system uptime during repeated surge events. |
| Automotive Body Control Modules | Industrial PLC I/O Protection |
Use Scenario: Load-dump and jump-start protection on 12-V battery-fed microcontroller power inputs in BCMs. IC Role / Device Role / Timing Role: Standoff device rated for 75 V, clamping at 126 V during ISO 7637-2 Pulse 5a (load dump). Use Value: Survives 120 V/350 ms load dump pulses while limiting MCU supply rail to safe operating range. | Use Scenario: Field-side transient protection on 24-V digital input channels of programmable logic controllers interfacing with solenoids and limit switches. IC Role / Device Role / Timing Role: Zener-based crowbar element shunting induced spikes to common return before optocoupler input stage. Use Value: 5 µA leakage at 60 V preserves input logic threshold margin; 126 V clamping prevents false triggering and latch-up. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ75A | Higher clamping voltage (123 V min at 2.4 A), same DO-214AA package, lower surge rating (600 W vs. 300 W) | Designed for bidirectional use; lacks specified Zener tolerance and TKVZ data | Select when bidirectional protection or higher surge margin is required; verify unidirectional biasing compatibility |
| P6SMB75A | Same 75 V standoff, but 600 W peak surge (10/1000 µs), DO-214AA package, 1000 VRM rating | Broader industrial qualification; no specified glass passivation or 1-ps response claim | Prefer for cost-sensitive, high-volume designs where ultrafast response is not critical |
Compared with SMBJ75A and P6SMB75A, the BZG04-75TR offers tighter Zener voltage tolerance (±5 %), verified glass passivation for humidity resistance, and documented sub-picosecond response-making it preferred for precision-clamp applications in harsh environments where long-term parameter stability is essential.
Availability
BZG04-75TR is available at Aetrix Electronics and suitable for industrial motor drives, telecom power supplies, automotive body control modules, and PLC I/O protection requiring stable component supply and traceable sourcing.
Supply support for BZG04-75TR 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 optoelectronics for industrial, automotive, and computing markets.
The BZG04-Series was developed specifically for high-energy transient suppression in demanding power electronics, emphasizing tight Zener tolerance, surge survivability, and long-term stability under thermal stress.
FAQ
What is the Zener voltage tolerance of the BZG04-75TR?
The BZG04-75TR has a nominal Zener voltage of 75 V with a tolerance of ±5 %, meaning its breakdown voltage ranges from 85 V to 94 V at test current IZT = 5 mA. This tight tolerance ensures predictable clamping behavior in precision protection circuits and is confirmed in the Vishay BZG04-Series datasheet (Doc. #85594, Rev. 2.2).
Does the BZG04-75TR support bidirectional transient suppression?
No, the BZG04-75TR is a unidirectional Zener diode with anode and cathode terminals explicitly defined. It clamps only when the cathode is positive relative to the anode. For bidirectional protection, two BZG04-75TR devices must be connected in series opposition, or a dedicated bidirectional TVS like SMBJ75CA should be selected instead.
What is the maximum allowable junction temperature for continuous operation of the BZG04-75TR?
The BZG04-75TR has a maximum junction temperature (Tj) rating of 150 °C, validated under steady-state and pulsed thermal conditions. Derating is required above ambient temperatures of 50 °C when dissipating >1.25 W, based on RthJA = 125 K/W for epoxy-glass mounting per Figure 1b in the official datasheet.
How does the clamping voltage of the BZG04-75TR compare to its Zener voltage?
The BZG04-75TR clamps at 126 V when subjected to a 2.4 A peak pulse current (10/1000 µs waveform), which is 68 % higher than its nominal 75 V Zener voltage. This clamping ratio (VCL/VZ ≈ 1.68) reflects the dynamic impedance rise under surge conditions and is critical for determining protected circuit voltage margins.
Is the BZG04-75TR compatible with lead-free reflow soldering processes?
Yes, the BZG04-75TR is fully compatible with lead-free reflow soldering per J-STD-020. Its DO-214AC package and glass-passivated junction withstand peak temperatures up to 260 °C for 30 seconds. The device is also certified lead (Pb)-free and compliant with RoHS 2002/95/EC, as stated in Vishay Document #85594.
BZG04-75TR 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)
BZG04-75TR FAQ
1.How can I place an order for BZG04-75TR through Aetrix?
Please submit a Request for Quotation (RFQ) for BZG04-75TR 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 BZG04-75TR reliable?
The price and inventory of BZG04-75TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZG04-75TR is usually 5 days.
3.What payment methods are accepted for BZG04-75TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZG04-75TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZG04-75TR?
BZG04-75TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZG04-75TR 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 BZG04-75TR?
For technical support, including BZG04-75TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZG04-75TR requirements.
6.How does Aetrix verify that BZG04-75TR is sourced from the original manufacturer or authorized distributors?
All BZG04-75TR 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 BZG04-75TR meets industry standards.
7.What is the process for return or replacement of BZG04-75TR?
All BZG04-75TR units undergo pre-shipment inspection (PSI). If there is an issue with BZG04-75TR, 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 BZG04-75TR part is unused and in its original packaging.
Return procedure for BZG04-75TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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