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Vishay General Semiconductor - Diodes Division BZG04-11TR3
- Part No.:
- BZG04-11TR3
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
BZG04-11TR3.pdf
- Description:
- TVS DIODE 11VWM 18.9VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:9,786
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Product details
Overview
BZG04-11TR3 from Vishay Semiconductors is a glass-passivated, surface-mount Zener diode optimized for transient voltage suppression in high-energy surge environments. It features a nominal standoff voltage of 11 V, clamping voltage of 18.9 V at 20.3 A peak pulse current, 300 W non-repetitive surge power rating (10/1000 µs), and DO-214AC (SMA) package with 77 mg mass. It is used in DC power rail protection for industrial control modules.
For engineers reviewing the BZG04-11TR3 datasheet, BZG04-11TR3 pinout, BZG04-11TR3 application, or BZG04-11TR3 equivalent, key selection criteria include clamping voltage margin relative to protected IC VDD, surge current capability under IEC 61000-4-5 waveform compliance, thermal resistance to PCB copper area, and RoHS-compliant lead-free construction.
Technical Context
The BZG04-11TR3 operates as a unidirectional voltage-clamping device with a specified breakdown voltage of 12.4 V at 5 mA test current and a temperature coefficient of 0.05 %/K. Its fast response time (≤1 ps) enables effective suppression of nanosecond-scale transients before downstream circuitry is stressed.
Thermal performance is defined by junction-to-lead resistance of 25 K/W and junction-to-ambient resistance ranging from 100 K/W (on Al₂O₃ ceramic) to 150 K/W (on epoxy-glass PCB), directly impacting sustained power handling in repetitive surge scenarios.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Standoff Voltage (VR) | 11 V - Maximum continuous reverse voltage before significant leakage; sets upper limit for protected line operating voltage. |
| Breakdown Voltage (V(BR)) | 12.4 V @ 5 mA - Precise Zener conduction onset; ensures predictable clamping threshold under low-current conditions. |
| Clamping Voltage (VCL) | 18.9 V @ 20.3 A - Peak voltage seen by protected circuit during 10/1000 µs surge; defines worst-case stress on downstream components. |
| Surge Power (PZSM) | 300 W - Non-repetitive peak power dissipation capability; determines survivability against single high-energy transients. |
| Junction Temperature (Tj) | 150 °C - Maximum allowable semiconductor junction temperature; constrains thermal design and PCB copper area requirements. |
| Junction Capacitance (Cj) | 850 pF @ 0 V - Parasitic capacitance affecting high-frequency signal integrity; relevant for data line or RF-coupled protection applications. |
Pinout & Package
Package: DO-214AC (SMA), surface-mount, molded plastic case with axial leads trimmed and formed for gull-wing mounting. Approximate weight: 77 mg.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | High-impedance reference node | Connected to protected line; conducts when transient exceeds VR; polarity must match system ground reference. |
| Anode | Return path to system ground | Low-impedance connection required to minimize clamping voltage rise; trace inductance directly impacts VCL performance. |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Enables stable long-term Zener voltage tolerance and low leakage (<5 µA at VR), critical for precision voltage reference stability over temperature and life. |
| Fast response time ≤1 ps | Minimizes delay between transient onset and clamping action, reducing overshoot into sensitive logic or analog circuits before protection engages. |
| Lead (Pb)-free & RoHS-compliant | Meets EU Directive 2002/95/EC and WEEE 2002/96/EC; supports environmentally compliant manufacturing without solderability or reliability trade-offs. |
| DO-214AC package | Standardized SMT footprint compatible with automated assembly; provides mechanical robustness and thermal path via soldered leads to PCB copper pour. |
Applications
| Industrial PLC I/O Protection | Automotive Body Control Module (BCM) Power Input |
|---|---|
Use Scenario: Protects 12 V DC input rails of programmable logic controller digital input modules against load dump and inductive switching transients. IC Role / Device Role / Timing Role: Unidirectional transient voltage suppressor placed between VIN and GND, clamping surges before they reach regulator ICs and microcontrollers. Use Value: Limits peak voltage to 18.9 V during 20.3 A surge, ensuring downstream 24 V tolerant regulators remain within safe operating area. |
Use Scenario: Shields BCM main 12 V supply from alternator load dump events (ISO 7637-2 Pulse 5a) in automotive interior electronics. IC Role / Device Role / Timing Role: Primary clamping element on battery feed line, absorbing up to 300 W for <1 ms to prevent brownout or latch-up of CAN transceivers and MCU. Use Value: Withstands 50 A peak forward surge current and maintains clamping below 19 V, preserving functional safety integrity per ISO 26262 ASIL-B requirements. |
| Telecom Power Supply ESD Clamping | Renewable Energy Inverter DC Link Surge Suppression |
Use Scenario: Suppresses ESD and lightning-induced surges on -48 V telecom rectifier output lines feeding base station backplane power distribution. IC Role / Device Role / Timing Role: Secondary-level TVS device mounted near connector entry point, complementing upstream MOVs with faster response and tighter voltage tolerance. Use Value: 850 pF junction capacitance avoids signal distortion on adjacent data traces; 12.4 V breakdown ensures compatibility with -48 V nominal systems using positive-ground architecture. |
Use Scenario: Protects DC link capacitors and IGBT gate drivers in solar string inverters from grid-switching transients and capacitor bank discharge events. IC Role / Device Role / Timing Role: Parallel-connected Zener clamp across DC bus, activated only during overvoltage excursions exceeding 11 V to avoid steady-state power loss. Use Value: 150 °C max junction temperature allows operation in high-ambient enclosures; 3 W steady-state dissipation supports thermal management with minimal heatsinking. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ11A | Higher clamping voltage (18.2 V @ 32.4 A), lower surge rating (600 W), same DO-214AA package but larger body than DO-214AC. | Designed for higher-energy IEC 61000-4-5 Level 4 testing; less suitable for space-constrained layouts requiring SMA footprint. | Select SMBJ11A only when >600 W surge capability is required and board area permits larger package. |
| P6SMB11A | Same 11 V standoff, but 600 W PZSM rating, 1000 pF Cj, and DO-214AA package with higher RthJA (160 K/W). | Targeted at general-purpose industrial surge suppression where clamping speed is secondary to energy absorption capacity. | Prefer P6SMB11A for cost-sensitive designs accepting higher clamping voltage and reduced high-frequency performance. |
Compared with SMBJ11A and P6SMB11A, the BZG04-11TR3 offers tighter clamping (18.9 V), lower parasitic capacitance (850 pF), and smaller DO-214AC footprint-making it optimal for compact, high-speed DC rail protection where layout density and signal integrity are prioritized over maximum surge energy handling.
Availability
BZG04-11TR3 is available at Aetrix Electronics and suitable for industrial PLC I/O protection, automotive BCM power input, and telecom power supply ESD clamping requiring stable component supply, consistent parametric performance, and RoHS-compliant manufacturing.
Supply support for BZG04-11TR3 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 specializing in discrete semiconductors, passive components, and sensors, with emphasis on reliability, precision, and high-power handling.
The BZG04-Series was designed specifically for robust transient voltage suppression in harsh industrial and automotive environments, balancing fast response, tight voltage tolerance, and standardized SMT packaging.
FAQ
What is the maximum clamping voltage of the BZG04-11TR3 under standard surge conditions?
The BZG04-11TR3 has a maximum clamping voltage of 18.9 V when subjected to a 10/1000 µs surge pulse at 20.3 A peak current. This value is measured per the Electrical Characteristics table in Vishay Document 85594 Rev. 2.2 and defines the highest voltage the protected circuit will experience during such an event. The BZG04-11TR3 achieves this while maintaining low leakage and stable Zener voltage across temperature.
Is the BZG04-11TR3 suitable for bidirectional transient suppression?
No, the BZG04-11TR3 is a unidirectional Zener diode intended for DC line protection with defined polarity. It conducts only in reverse bias above its 12.4 V breakdown threshold and does not provide symmetrical clamping for AC or bipolar transients. For bidirectional protection, a pair of BZG04-11TR3 devices in series opposition or a dedicated bidirectional TVS like SMAJ11CA would be required-not the BZG04-11TR3 alone.
What is the thermal resistance from junction to ambient for the BZG04-11TR3 on a standard PCB?
The BZG04-11TR3 exhibits a junction-to-ambient thermal resistance (RthJA) of 150 K/W when mounted on epoxy-glass hard tissue PCB per Figure 1a in the datasheet. With increased copper area or use of Al₂O₃ ceramic substrate, RthJA improves to 100 K/W. This directly affects steady-state power derating: at 50 °C ambient, the BZG04-11TR3 supports only 1.25 W continuous dissipation under those conditions.
Does the BZG04-11TR3 meet RoHS and lead-free soldering requirements?
Yes, the BZG04-11TR3 is explicitly marked as lead (Pb)-free and compliant with RoHS Directive 2002/95/EC and WEEE 2002/96/EC per Vishay Document 85594 Rev. 2.2. Its termination finish is compatible with standard lead-free reflow profiles (JEDEC J-STD-020), and no exemptions apply. The BZG04-11TR3 has been qualified for use in environmentally regulated markets without modification.
How does the junction capacitance of the BZG04-11TR3 affect high-speed signal lines?
The BZG04-11TR3 has a typical junction capacitance of 850 pF at 0 V, which makes it unsuitable for direct placement on high-speed data lines (e.g., USB, CAN, Ethernet) where sub-10 pF loading is required. It is intended for power rail protection only. Using the BZG04-11TR3 on signal paths would cause excessive rise/fall time degradation and impedance mismatch-confirming that the BZG04-11TR3 must be applied exclusively to DC supply nodes.
BZG04-11TR3 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):
- 11V
- Voltage - Breakdown (Min):
- 12.4V
- Voltage - Clamping (Max) @ Ipp:
- 18.9V
- Current - Peak Pulse (10/1000µs):
- 15.9A
- Power - Peak Pulse:
- 300W
- Power Line Protection:
- No
- Applications:
- -
- Capacitance @ Frequency:
- 850pF @ 1MHz
- Operating Temperature:
- -
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AC (SMA)
BZG04-11TR3 FAQ
1.How can I place an order for BZG04-11TR3 through Aetrix?
Please submit a Request for Quotation (RFQ) for BZG04-11TR3 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 BZG04-11TR3 reliable?
The price and inventory of BZG04-11TR3 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZG04-11TR3 is usually 5 days.
3.What payment methods are accepted for BZG04-11TR3?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZG04-11TR3 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZG04-11TR3?
BZG04-11TR3 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZG04-11TR3 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 BZG04-11TR3?
For technical support, including BZG04-11TR3 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZG04-11TR3 requirements.
6.How does Aetrix verify that BZG04-11TR3 is sourced from the original manufacturer or authorized distributors?
All BZG04-11TR3 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 BZG04-11TR3 meets industry standards.
7.What is the process for return or replacement of BZG04-11TR3?
All BZG04-11TR3 units undergo pre-shipment inspection (PSI). If there is an issue with BZG04-11TR3, 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 BZG04-11TR3 part is unused and in its original packaging.
Return procedure for BZG04-11TR3:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZG04-11TR3 Tags
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