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Vishay General Semiconductor - Diodes Division BZG04-82TR
- Part No.:
- BZG04-82TR
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
BZG04-82TR.pdf
- Description:
- TVS DIODE 82VWM 139VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:2,287
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Product details
Overview
BZG04-82TR from Vishay Semiconductors is a glass-passivated, lead-free Zener diode designed for high-energy transient voltage suppression in power supply and interface protection circuits. It features a nominal standoff voltage of 82 V, 300 W non-repetitive peak surge power (10/1000 µs), clamping voltage of 139 V at 2.2 A, and operates up to 150 °C junction temperature - deployed in industrial power input stages and telecom line interfaces.
For engineers reviewing the BZG04-82TR datasheet, BZG04-82TR pinout, BZG04-82TR application, or BZG04-82TR equivalent, key selection criteria include verified clamping performance under 10/1000 µs surges, thermal resistance on epoxy-glass PCB (125 K/W), DO-214AC package compatibility, and RoHS-compliant lead-free construction.
Technical Context
The BZG04-82TR functions as a unidirectional voltage-clamping device with a precisely defined breakdown voltage (94 V min, 104 V max at 5 mA) and fast response time (≤1 ps). Its glass-passivated junction ensures stable Zener characteristics and high reliability under repeated surge stress.
Thermal design relies on its low junction-to-lead thermal resistance (25 K/W) and configurable junction-to-ambient resistance (100–150 K/W depending on PCB mounting), enabling robust operation in compact industrial enclosures without forced cooling.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Standoff Voltage | 82 V - defines maximum continuous reverse operating voltage before conduction begins |
| Breakdown Voltage | 94–104 V @ 5 mA - precise clamping threshold for overvoltage event initiation |
| Clamping Voltage | 139 V @ 2.2 A (10/1000 µs) - actual voltage seen by protected circuit during surge |
| Peak Surge Power | 300 W (10/1000 µs) - maximum transient energy absorption capability per pulse |
| Junction Temp Limit | 150 °C - sets maximum allowable die temperature for reliable long-term operation |
| Package | DO-214AC (SMA) - industry-standard surface-mount outline with 77 mg mass and thermal pad compatibility |
| RoHS Compliance | Lead-free, compliant with 2002/95/EC and WEEE 2002/96/EC - meets global environmental directives |
Pinout & Package
DO-214AC (SMA) package: molded plastic body with axial leads trimmed and formed for surface-mount reflow; cathode band marked; mechanical outline per Vishay Doc. 85594 Rev. 2.2.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry / Reverse bias reference | Connected to lower-potential node; enables conduction when cathode exceeds anode by ≥VZ |
| Cathode | Zener voltage reference / Clamping output | Connected to protected line; sinks surge current to ground or rail when overvoltage occurs |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Ensures stable Zener voltage tolerance and long-term parameter drift <±2 % over 1000 hrs at rated Pdiss |
| Fast response time | ≤1 ps rise time enables effective suppression of nanosecond-scale ESD and lightning-induced transients |
| High surge capability | 300 W peak power handling supports IEC 61000-4-5 Level 4 (4 kV, 2 Ω source) compliance in properly designed layouts |
| DO-214AC footprint | Standardized SMT package allows drop-in replacement across multiple Vishay and industry Zener families |
Applications
| Industrial Power Input Protection | Telecom Line Interface |
|---|---|
Use Scenario: AC/DC front-end input stage exposed to lightning-induced surges and load dump events. IC Role / Device Role / Timing Role: Primary clamping element placed between L/N and earth ground or bulk capacitor rail. Use Value: Limits transient voltage to ≤139 V, protecting downstream bridge rectifiers and PFC controllers from destructive overvoltage. | Use Scenario: Ethernet or RS-485 data lines connected to outdoor equipment subject to induced surges. IC Role / Device Role / Timing Role: Unidirectional TVS diode shunting common-mode transients to chassis ground. Use Value: Clamps 10/1000 µs surges to safe levels while maintaining signal integrity due to low 250 pF junction capacitance at 0 V. |
| Automotive Body Control Module | Renewable Energy Inverter DC Link |
Use Scenario: 12 V battery-supplied microcontroller inputs subjected to ISO 7637-2 pulse 1 and pulse 2a transients. IC Role / Device Role / Timing Role: Secondary protection stage after primary LC filter, absorbing residual energy. Use Value: Withstands 50 A peak forward surge current and maintains clamping stability across -65 °C to +150 °C ambient range. | Use Scenario: DC bus monitoring circuitry in solar string inverters exposed to switching transients and grid faults. IC Role / Device Role / Timing Role: Overvoltage clamp on voltage divider or ADC input path feeding controller. Use Value: Provides 82 V standoff with tight 94–104 V breakdown window, ensuring accurate sensing remains intact during normal operation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ82A | Higher clamping voltage (137 V min), same DO-214AA package, 600 W peak power rating | Designed for bidirectional surge suppression; lacks precise Zener regulation in forward bias | Select when higher surge margin is required and bidirectional protection is acceptable |
| P6SMB82A | Same clamping voltage spec (139 V), 600 W rating, DO-214AA package, slightly higher leakage (5 µA vs. 5 µA) | Optimized for general-purpose TVS use; less tightly specified breakdown tolerance than BZG04-82TR | Choose for cost-sensitive designs where ±10 % VBR tolerance is sufficient |
Compared with SMBJ82A and P6SMB82A, the BZG04-82TR offers tighter breakdown voltage control (94–104 V vs. 77.9–86.1 V), superior long-term stability via glass passivation, and explicit surge current validation - making it preferred for precision-regulated clamping in mission-critical industrial systems.
Availability
BZG04-82TR is available at Aetrix Electronics and suitable for industrial power input protection, telecom line interface hardening, and automotive body control module designs requiring stable component supply and full traceability.
Supply support for BZG04-82TR 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 demanding industrial and automotive applications.
The BZG04-Series is engineered specifically for high-energy transient suppression in harsh environments, emphasizing stable Zener voltage, surge survivability, and RoHS-compliant manufacturing - targeting power supply, telecom infrastructure, and transportation electronics.
FAQ
What is the exact breakdown voltage range for BZG04-82TR?
The BZG04-82TR has a guaranteed breakdown voltage range of 94 V to 104 V at 5 mA test current, as specified in Vishay Document 85594 Rev. 2.2. This tight tolerance ensures predictable clamping behavior in precision protection circuits, and the value is measured under controlled 25 °C ambient conditions with validated test methodology.
Does BZG04-82TR support bidirectional transient suppression?
No, the BZG04-82TR is a unidirectional Zener diode optimized for reverse-bias clamping only. It conducts in forward bias like a standard silicon diode (VF = 1.2 V at 0.5 A), but its surge rating and clamping specification apply solely to reverse polarity events. For bidirectional protection, a paired configuration or dedicated bidirectional TVS such as SMBJ82CA is required.
What is the maximum allowable PCB trace length for thermal performance of BZG04-82TR?
Vishay specifies thermal resistance values based on defined board configurations (Fig. 1a/b in Doc. 85594): RthJA = 125 K/W assumes 10 mm lead length on epoxy-glass PCB. Extending copper pour beyond 10 mm reduces thermal resistance further, but no maximum trace length is defined - instead, thermal design must ensure junction temperature stays ≤150 °C under worst-case power dissipation and ambient conditions.
Is BZG04-82TR suitable for IEC 61000-4-5 compliance testing?
Yes, the BZG04-82TR's 300 W peak surge power rating (10/1000 µs) and 139 V clamping voltage at 2.2 A enable it to meet IEC 61000-4-5 Level 4 (4 kV, 2 Ω source) requirements when implemented with appropriate PCB layout - including short traces, adequate ground plane, and series impedance matching - as confirmed in Vishay's application guidance for the BZG04-Series.
What does the "TR" suffix indicate in BZG04-82TR?
The "TR" suffix in BZG04-82TR denotes tape-and-reel packaging: 1.5 k units per 7-inch reel, optimized for automated SMT placement. This differs from "TR3", which indicates 6 k units per 13-inch reel. Both variants share identical electrical and thermal specifications; only packaging and reel dimensions differ.
BZG04-82TR 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):
- 82V
- Voltage - Breakdown (Min):
- 94V
- Voltage - Clamping (Max) @ Ipp:
- 139V
- Current - Peak Pulse (10/1000µs):
- 2.2A
- Power - Peak Pulse:
- 300W
- Power Line Protection:
- No
- Applications:
- -
- Capacitance @ Frequency:
- 250pF @ 1MHz
- Operating Temperature:
- -
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AC (SMA)
BZG04-82TR FAQ
1.How can I place an order for BZG04-82TR through Aetrix?
Please submit a Request for Quotation (RFQ) for BZG04-82TR 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 BZG04-82TR reliable?
The price and inventory of BZG04-82TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZG04-82TR is usually 5 days.
3.What payment methods are accepted for BZG04-82TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZG04-82TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZG04-82TR?
BZG04-82TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZG04-82TR 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 BZG04-82TR?
For technical support, including BZG04-82TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZG04-82TR requirements.
6.How does Aetrix verify that BZG04-82TR is sourced from the original manufacturer or authorized distributors?
All BZG04-82TR 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 BZG04-82TR meets industry standards.
7.What is the process for return or replacement of BZG04-82TR?
All BZG04-82TR units undergo pre-shipment inspection (PSI). If there is an issue with BZG04-82TR, 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 BZG04-82TR part is unused and in its original packaging.
Return procedure for BZG04-82TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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