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Vishay General Semiconductor - Diodes Division BZG04-47TR3
- Part No.:
- BZG04-47TR3
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
BZG04-47TR3.pdf
- Description:
- TVS DIODE 47VWM 78.6VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:8,413
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Product details
Overview
BZG04-47TR3 from Vishay Semiconductors is a glass-passivated, surface-mount Zener diode designed for transient voltage suppression in high-energy surge environments. It features a nominal Zener breakdown voltage of 52 V at 10 mA, clamping voltage of 78.6 V at 3.8 A (10/1000 µs pulse), junction capacitance of 330 pF at 0 V, and peak surge power dissipation of 300 W. It is used in DC power rail protection for industrial motor drives and telecom power supplies.
For engineers reviewing the BZG04-47TR3 datasheet, BZG04-47TR3 pinout, BZG04-47TR3 application, or BZG04-47TR3 equivalent, key selection criteria include its 47 V standoff rating, DO-214AC package thermal resistance (125 K/W on epoxy-glass hard tissue), 150 °C max junction temperature, and lead (Pb)-free RoHS-compliant construction.
Technical Context
The BZG04-47TR3 operates as a unidirectional, single-junction Zener diode optimized for fast clamping response (≤1 ps rise time) and high-reliability surge immunity. Its glass-passivated junction ensures stable leakage current (IR ≤ 5 µA at VR = 47 V) and low temperature coefficient (TKVZ = +0.07 %/K).
Thermal performance is defined for mounting on epoxy-glass hard tissue (RthJA = 125 K/W per Fig. 1b) or Al₂O₃ ceramic (RthJA = 100 K/W), with junction-to-lead thermal resistance of 25 K/W. It sustains non-repetitive 10 ms half-sine forward surge current up to 50 A.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 52 V min at IZT = 10 mA - defines precise clamping threshold under standard test conditions |
| Clamping Voltage (VCL) | 78.6 V max at IPP = 3.8 A (10/1000 µs) - maximum voltage seen by protected circuit during surge |
| Standoff Voltage (VR) | 47 V - maximum continuous reverse voltage before significant leakage begins |
| Junction Capacitance (Cj) | 330 pF at VR = 0 V, f = 1 MHz - impacts high-frequency signal integrity in data-line protection |
| Peak Surge Power (PZSM) | 300 W for tp = 10/1000 µs - determines energy-handling capability against lightning-induced transients |
| Forward Voltage (VF) | 1.2 V max at IF = 0.5 A - relevant for bidirectional configurations or forward-biased fault paths |
| Thermal Resistance (RthJA) | 125 K/W on epoxy-glass hard tissue - governs steady-state power derating above 25 °C ambient |
Pinout & Package
Package: DO-214AC (SMA), molded plastic case with axial leads trimmed and formed for surface-mount soldering; weight ≈ 77 mg.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (marked band) | Reverse-biased Zener terminal | Connected to protected line; conducts when transient exceeds VZ to shunt current to ground |
| Anode | Reference/ground return path | Typically tied to system ground or low-impedance return plane to complete clamping loop |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Enables stable long-term Zener voltage tolerance and low IR drift over temperature and life |
| Fast response time (≤1 ps) | Minimizes voltage overshoot during nanosecond-scale ESD or EFT events |
| 300 W non-repetitive surge rating | Supports IEC 61000-4-5 Level 4 (4 kV surge) compliance in compact form factor |
| DO-214AC surface-mount package | Enables automated assembly and provides better thermal coupling than through-hole alternatives |
| RoHS-compliant, lead-free | Meets EU Directive 2002/95/EC and WEEE 2002/96/EC for environmentally responsible manufacturing |
Applications
| Industrial Motor Drive Protection | Telecom DC Power Input |
|---|---|
Use Scenario: Suppresses inductive kickback and load-dump transients on 48 V DC bus lines in variable-frequency drives. IC Role / Device Role / Timing Role: Standalone unidirectional TVS device placed across input terminals to clamp surges before they reach upstream regulators or controllers. Use Value: Limits transient voltage to ≤78.6 V, protecting 60 V-rated MOSFETs and gate drivers without requiring active control circuitry. |
Use Scenario: Guards primary-side DC input of telecom power modules against lightning-induced surges on -48 V distribution lines. IC Role / Device Role / Timing Role: Primary-level transient suppressor mounted directly at board edge connector, operating in parallel with bulk capacitors. Use Value: Absorbs 300 W surge energy within 1 ms, maintaining downstream rectifier and controller reliability under repeated stress. |
| Automotive Body Control Module | Industrial PLC I/O Protection |
Use Scenario: Protects 12 V supply rails in BCMs from jump-start spikes and alternator load dump (ISO 7637-2 Pulse 5a). IC Role / Device Role / Timing Role: Zener-based clamping element in passive front-end protection network, paired with series impedance. Use Value: Withstands 50 A peak forward surge and maintains 47 V standoff, enabling robust operation in harsh automotive environments. |
Use Scenario: Shields digital I/O channels of programmable logic controllers from field-wiring induced transients in factory automation. IC Role / Device Role / Timing Role: Discrete Zener clamp on each channel's power rail, providing localized, low-capacitance protection. Use Value: 330 pF capacitance avoids signal distortion on 100 kHz–1 MHz digital lines while delivering 78.6 V clamping performance. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ47A | Higher clamping voltage (80.3 V at 3.7 A), same DO-214AA package, lower PZSM (600 W but higher RthJA) | Designed for higher-energy surges but exhibits greater voltage overshoot during fast transients | Select SMBJ47A only if system margin allows >78.6 V clamping and thermal layout supports higher RthJA |
| P6SMB47A | Same 47 V standoff, 79.4 V clamping at 3.8 A, but larger DO-214AA package and higher Cj (400 pF) | Offers improved surge handling (600 W) but adds parasitic capacitance unsuitable for high-speed signal lines | Prefer P6SMB47A where PCB space permits and signal bandwidth < 10 MHz; avoid for data-line protection |
Compared with SMBJ47A and P6SMB47A, the BZG04-47TR3 delivers tighter clamping (78.6 V), lower junction capacitance (330 pF), and superior thermal resistance on standard FR4 (125 K/W), making it optimal for space-constrained, high-density industrial power designs requiring precise voltage limiting.
Availability
BZG04-47TR3 is available at Aetrix Electronics and suitable for industrial motor drives, telecom power inputs, and automotive body control modules requiring stable component supply, consistent surge performance, and RoHS-compliant sourcing.
Supply support for BZG04-47TR3 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 developed for high-energy transient suppression in industrial, telecom, and automotive power systems, prioritizing fast response, stable Zener characteristics, and surface-mount manufacturability.
FAQ
What is the Zener breakdown voltage tolerance for BZG04-47TR3?
The BZG04-47TR3 has a specified Zener breakdown voltage range of 52 V minimum at IZT = 10 mA, with no maximum value given in the datasheet; actual units typically measure 52–54 V. This tight lower bound ensures reliable clamping onset without premature conduction under normal 47 V standby conditions. The BZG04-47TR3 is not binned for tighter tolerance - design margins must accommodate this variation.
Can BZG04-47TR3 be used in bidirectional transient protection?
No - the BZG04-47TR3 is a unidirectional Zener diode and conducts only in reverse bias above VZ. For bidirectional protection, two BZG04-47TR3 devices must be connected in series opposition (anode-to-anode), or a dedicated bidirectional TVS like SMAJ47CA should be selected. Using a single BZG04-47TR3 in AC-coupled or floating applications risks forward conduction damage during negative transients.
What is the maximum allowable PCB trace length between BZG04-47TR3 and protected node?
To maintain effective clamping, PCB trace inductance must be minimized: total loop inductance (anode-to-ground + cathode-to-line) should remain below 10 nH. This typically requires trace lengths under 5 mm with direct ground-plane connection beneath the BZG04-47TR3. Longer traces increase voltage overshoot during fast transients, degrading the BZG04-47TR3's ≤1 ps response advantage.
How does thermal resistance change when BZG04-47TR3 is mounted on aluminum oxide ceramic?
When mounted on Al₂O₃ ceramic (Fig. 1b), the BZG04-47TR3 achieves RthJA = 100 K/W - a 20 % improvement over the 125 K/W value on epoxy-glass hard tissue. This allows higher sustained power dissipation: at Tamb = 50 °C, the BZG04-47TR3 can handle 1.25 W continuously on FR4 but up to ~1.5 W on ceramic, extending safe operation in thermally demanding enclosures.
Is BZG04-47TR3 suitable for IEC 61000-4-5 surge testing?
Yes - the BZG04-47TR3's 300 W peak surge power rating (10/1000 µs) supports compliance with IEC 61000-4-5 Level 3 (2 kV line-earth, 1 kV line-line) and Level 4 (4 kV line-earth) when properly laid out. Its 78.6 V clamping voltage ensures protected circuits see less than their 80 V absolute maximum rating. Full compliance requires validation with system-level testing including source impedance and coupling network.
BZG04-47TR3 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):
- 47V
- Voltage - Breakdown (Min):
- 52V
- Voltage - Clamping (Max) @ Ipp:
- 78.6V
- Current - Peak Pulse (10/1000µs):
- 3.8A
- Power - Peak Pulse:
- 300W
- Power Line Protection:
- No
- Applications:
- -
- Capacitance @ Frequency:
- 330pF @ 1MHz
- Operating Temperature:
- -
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AC (SMA)
BZG04-47TR3 FAQ
1.How can I place an order for BZG04-47TR3 through Aetrix?
Please submit a Request for Quotation (RFQ) for BZG04-47TR3 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 BZG04-47TR3 reliable?
The price and inventory of BZG04-47TR3 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZG04-47TR3 is usually 5 days.
3.What payment methods are accepted for BZG04-47TR3?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZG04-47TR3 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZG04-47TR3?
BZG04-47TR3 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZG04-47TR3 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 BZG04-47TR3?
For technical support, including BZG04-47TR3 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZG04-47TR3 requirements.
6.How does Aetrix verify that BZG04-47TR3 is sourced from the original manufacturer or authorized distributors?
All BZG04-47TR3 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 BZG04-47TR3 meets industry standards.
7.What is the process for return or replacement of BZG04-47TR3?
All BZG04-47TR3 units undergo pre-shipment inspection (PSI). If there is an issue with BZG04-47TR3, 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 BZG04-47TR3 part is unused and in its original packaging.
Return procedure for BZG04-47TR3:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZG04-47TR3 Tags
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