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Vishay General Semiconductor - Diodes Division BZG04-51TR3
- Part No.:
- BZG04-51TR3
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
BZG04-51TR3.pdf
- Description:
- TVS DIODE 51VWM 86.5VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:4,284
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Product details
Overview
BZG04-51TR3 from Vishay Semiconductors is a glass-passivated, lead-free Zener diode designed for transient voltage suppression in high-energy surge environments. It features a 51 V standoff voltage, 86.5 V clamping voltage at 3.5 A peak pulse current, 300 W non-repetitive surge power rating, and DO-214AC (SMC) package with 77 mg mass for robust PCB-level protection.
For engineers reviewing the BZG04-51TR3 datasheet, BZG04-51TR3 pinout, BZG04-51TR3 application, or BZG04-51TR3 equivalent, key selection criteria include clamping performance under 10/1000 µs surges, thermal resistance to ambient (125 K/W on epoxy-glass hard tissue), junction temperature limit (150 °C), and RoHS-compliant packaging in 6 k/13" reel (TR3).
Technical Context
The BZG04-51TR3 operates as a unidirectional voltage-clamping device with precise Zener breakdown at 58 V (min) / 64 V (max) under 10 mA test current. Its fast response time (≤1 ps) enables effective suppression of ESD and lightning-induced transients before downstream IC damage occurs.
Thermal design relies on low junction-to-lead resistance (25 K/W) and configurable junction-to-ambient paths depending on PCB layout - 150 K/W on standard epoxy-glass, 125 K/W with enhanced copper area (Fig. 1b), or 100 K/W on Al₂O₃ ceramic substrates - enabling reliable operation up to 150 °C junction temperature.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Standoff Voltage | 51 V - maximum continuous reverse voltage before conduction begins |
| Clamping Voltage | 86.5 V @ 3.5 A - peak voltage seen by protected circuit during 10/1000 µs surge |
| Surge Power Rating | 300 W - non-repetitive peak power dissipation capability for transient events |
| Junction Temperature | 150 °C - maximum allowable operating junction temperature for reliability |
| Package | DO-214AC (SMC) - surface-mount case with 77 mg mass and standardized footprint |
| RoHS Compliance | Yes - lead-free construction per EU Directive 2002/95/EC and WEEE 2002/96/EC |
Pinout & Package
DO-214AC (SMC) package: molded plastic body with axial leads trimmed and formed for surface mounting; cathode band marked; typical weight 77 mg; outline per Vishay Doc. 85594 Rev. 2.2.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry point during forward bias or surge clamp path | Connected to lower-potential side of protected line; defines polarity of clamping action |
| Cathode | Current exit point during reverse breakdown or surge clamp | Marked with band; connected to higher-potential rail or signal line requiring overvoltage protection |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Ensures stable Zener voltage over lifetime and improved moisture resistance vs. epoxy-passivated alternatives |
| Fast response time ≤1 ps | Enables clamping before transient energy couples into sensitive analog or digital circuitry |
| High surge current capability (50 A IFSM) | Supports single half-sine wave surges without bond-wire fusing or junction failure |
| Low junction capacitance (310 pF @ 0 V) | Minimizes signal distortion in high-speed data lines while maintaining clamping integrity |
Applications
| Industrial Motor Drives | Automotive Power Distribution |
|---|---|
Use Scenario: Protection of gate drivers and microcontroller I/O against inductive kickback from relay coils and solenoid switching. IC Role / Device Role: Primary transient voltage suppressor placed across DC bus rails and control signal lines. Use Value: Clamps 86.5 V surges at 3.5 A, preventing latch-up or permanent damage to 3.3 V/5 V logic interfaces. | Use Scenario: Suppressing load-dump transients (up to 120 V) in 12 V automotive subsystems such as infotainment and body control modules. IC Role / Device Role: Standoff-rated Zener clamp on battery-supplied rails upstream of LDO regulators. Use Value: Withstands 300 W surge pulses and operates reliably at 150 °C junction temperature under hood conditions. |
| Telecom Line Interface Cards | Renewable Energy Inverters |
Use Scenario: Secondary protection stage after gas discharge tube (GDT) on Ethernet PHY or RS-485 data lines exposed to lightning-induced surges. IC Role / Device Role: Fast-response clamping element that handles residual energy not shunted by primary GDT. Use Value: 310 pF junction capacitance avoids signal integrity degradation at 100 Mbps data rates while delivering sub-nanosecond response. | Use Scenario: DC-link overvoltage protection in solar string inverters subjected to grid fault transients and rapid PV array voltage changes. IC Role / Device Role: Parallel-connected Zener clamp across high-voltage DC bus (e.g., 600 V nominal) with series current-limiting resistor. Use Value: 51 V standoff allows stacking configurations; 300 W surge rating handles repetitive switching transients without thermal runaway. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ51A | Same DO-214AA package; 51 V standoff; 87.1 V clamping @ 3.5 A; 600 W surge rating | Higher surge rating supports longer-duration transients but larger package footprint than DO-214AC | Select when higher surge margin is required and board space permits SMB footprint |
| P6SMB51A | DO-214AA package; identical 51 V standoff and 87.1 V clamping; 600 W rating; same RoHS compliance | Wider availability and broader distributor stock, but slightly higher RthJA (160 K/W typical) | Prefer for cost-sensitive designs where thermal budget allows higher junction rise |
Compared with SMBJ51A and P6SMB51A, the BZG04-51TR3 offers tighter clamping (86.5 V vs. 87.1 V), lower thermal resistance (125 K/W vs. ≥160 K/W), and smaller DO-214AC footprint - making it optimal for space-constrained, thermally demanding industrial and automotive PCB layouts.
Availability
BZG04-51TR3 is available at Aetrix Electronics and suitable for industrial motor drives, automotive power distribution systems, telecom line interface cards, and renewable energy inverters requiring stable component supply and long-term lifecycle support.
Supply support for BZG04-51TR3 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, optoelectronics, and passive components for industrial, automotive, and computing markets.
The BZG04-Series was engineered specifically for high-energy transient suppression in harsh environments, emphasizing stable Zener voltage, fast response, and robust thermal performance in surface-mount packages.
FAQ
What is the exact Zener breakdown voltage range for BZG04-51TR3?
The BZG04-51TR3 has a specified Zener breakdown voltage range of 58 V (minimum) to 64 V (maximum) at 10 mA test current, per Vishay Document 85594 Rev. 2.2. This tolerance ensures consistent clamping behavior across production lots while accommodating manufacturing variance. The 51 V value refers to its nominal standoff voltage, not the actual breakdown threshold.
Does BZG04-51TR3 support bidirectional transient suppression?
No, BZG04-51TR3 is a unidirectional Zener diode intended for reverse-bias clamping only. It conducts during positive overvoltage events on the cathode relative to anode and does not protect against negative-going transients. For bidirectional protection, two BZG04-51TR3 devices must be connected in series opposition, or a dedicated bidirectional TVS like SMAJ51CA should be used instead.
What is the maximum allowable PCB trace length between BZG04-51TR3 and protected IC inputs?
To maintain effective clamping, PCB trace inductance must be minimized: total loop inductance (anode-to-cathode path) should remain below 10 nH. For typical 1 oz copper, this corresponds to ≤8 mm straight trace length with adjacent ground plane. Longer traces increase voltage overshoot during fast transients, reducing the protective efficacy of the BZG04-51TR3.
Can BZG04-51TR3 be used in parallel for higher surge current handling?
Parallel operation of BZG04-51TR3 devices is not recommended due to mismatch in Zener voltage tolerances (±5% to ±10%), which causes uneven current sharing and potential thermal runaway in one device. For higher surge capability, select a single higher-rated part like SMBJ51A or implement external current-sharing resistors - though this adds complexity and reduces clamping speed.
Is BZG04-51TR3 qualified for automotive AEC-Q200 stress testing?
No, BZG04-51TR3 is not AEC-Q200 qualified. While it meets RoHS and operates up to 150 °C junction temperature, Vishay's official qualification documentation (Document 85594) does not list AEC-Q200 test results. For automotive-grade designs requiring formal qualification, consider Vishay's AEC-Q200-certified alternatives such as the VTVS51A series or contact Vishay directly for qualified variants of the BZG04 family.
BZG04-51TR3 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):
- 51V
- Voltage - Breakdown (Min):
- 58V
- Voltage - Clamping (Max) @ Ipp:
- 86.5V
- Current - Peak Pulse (10/1000µs):
- 3.5A
- Power - Peak Pulse:
- 300W
- Power Line Protection:
- No
- Applications:
- -
- Capacitance @ Frequency:
- 310pF @ 1MHz
- Operating Temperature:
- -
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AC (SMA)
BZG04-51TR3 FAQ
1.How can I place an order for BZG04-51TR3 through Aetrix?
Please submit a Request for Quotation (RFQ) for BZG04-51TR3 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 BZG04-51TR3 reliable?
The price and inventory of BZG04-51TR3 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZG04-51TR3 is usually 5 days.
3.What payment methods are accepted for BZG04-51TR3?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZG04-51TR3 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZG04-51TR3?
BZG04-51TR3 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZG04-51TR3 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 BZG04-51TR3?
For technical support, including BZG04-51TR3 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZG04-51TR3 requirements.
6.How does Aetrix verify that BZG04-51TR3 is sourced from the original manufacturer or authorized distributors?
All BZG04-51TR3 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 BZG04-51TR3 meets industry standards.
7.What is the process for return or replacement of BZG04-51TR3?
All BZG04-51TR3 units undergo pre-shipment inspection (PSI). If there is an issue with BZG04-51TR3, 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 BZG04-51TR3 part is unused and in its original packaging.
Return procedure for BZG04-51TR3:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZG04-51TR3 Tags
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