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Vishay General Semiconductor - Diodes Division BZG04-33TR3
- Part No.:
- BZG04-33TR3
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
BZG04-33TR3.pdf
- Description:
- TVS DIODE 33VWM 54.1VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:6,715
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Product details
Overview
BZG04-33TR3 from Vishay Semiconductors is a glass-passivated, surface-mount Zener diode designed for transient voltage suppression in DC power rails and signal lines. It features a nominal Zener voltage of 33 V, 300 W non-repetitive peak surge power (10/1000 µs), 5.5 A clamping current, 54.1 V clamping voltage at 5.5 A, and DO-214AC (SMA) package with RoHS-compliant lead-free construction.
For engineers reviewing the BZG04-33TR3 datasheet, BZG04-33TR3 pinout, BZG04-33TR3 application, or BZG04-33TR3 equivalent, key selection criteria include its 33 V standoff rating, fast ≤1 ps response time, 150 °C junction temperature limit, and suitability for IEC 61000-4-2/4-4/4-5 compliant protection circuits in industrial power supplies and automotive ECUs.
Technical Context
The BZG04-33TR3 operates as a unidirectional voltage-clamping device with a precisely defined Zener breakdown voltage (37 V min, 39.8 V max at 10 mA) and low dynamic impedance. Its glass-passivated junction ensures stable leakage current (≤5 µA at 26.4 V) and high reliability under repeated surge stress.
Thermal performance is defined by junction-to-lead resistance of 25 K/W and junction-to-ambient resistance of 100–150 K/W depending on PCB mounting - critical for sustained power dissipation up to 3 W at 100 °C ambient when thermally optimized.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 33 V nominal; 37 V min to 39.8 V max at IZT = 10 mA - defines precise clamping threshold for overvoltage events |
| Clamping Voltage (VCL) | 54.1 V at IPP = 5.5 A (10/1000 µs pulse) - determines maximum voltage seen by protected circuit during surge |
| Peak Surge Power | 300 W (10/1000 µs) - enables robust handling of high-energy transients per IEC 61000-4-5 Level 4 |
| Junction Temperature | 150 °C max - allows operation in high-ambient environments such as engine control units or industrial drives |
| Package | DO-214AC (SMA); 77 mg mass - standard SMT footprint compatible with automated assembly and IPC-7351B land patterns |
| Surge Current (IFSM) | 50 A (10 ms half-sine) - supports short-duration overload conditions without failure |
Pinout & Package
DO-214AC (SMA) package: cathode-banded end, axial leads trimmed and formed for surface-mount use; case outline per Vishay drawing 19628.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry point during forward conduction or reverse surge | Connected to lower-potential node (e.g., ground or return path) in clamping configuration |
| Cathode | Current exit point during Zener breakdown | Connected to protected line (e.g., 33 V rail); band identifies this terminal |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Enables stable leakage current (<5 µA at 26.4 V) and long-term parameter consistency across temperature and life cycles |
| Fast response time | ≤1 ps rise time from 0 to VZmin - ensures clamping activation before sensitive downstream components experience overstress |
| Lead (Pb)-free & RoHS-compliant | Fully compliant with EU RoHS Directive 2002/95/EC and WEEE 2002/96/EC - supports green manufacturing and export requirements |
| High surge capability | 300 W peak power (10/1000 µs) with 50 A IFSM - exceeds IEC 61000-4-5 open-circuit test requirements for industrial equipment |
Applications
| Industrial Power Supply Protection | Automotive ECU Input Protection |
|---|---|
Use Scenario: Protecting 24 V DC input stage of programmable logic controllers against load dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Unidirectional transient voltage suppressor placed between input rail and chassis ground. Use Value: Clamps surges to ≤54.1 V within ≤1 ps, preventing damage to upstream DC/DC converters rated for 40 V absolute maximum. |
Use Scenario: Safeguarding microcontroller I/O pins and CAN transceiver power inputs in body control modules exposed to battery transients. IC Role / Device Role / Timing Role: Standoff-rated Zener clamp on 33 V auxiliary supply rail feeding sensor interfaces. Use Value: Maintains 33 V system integrity during 12 V battery load dump events (up to 60 V, 400 ms), limiting excursion to 54.1 V. |
| Telecom Line Interface Protection | Renewable Energy Inverter Control Board |
Use Scenario: Shielding RS-485 transceivers and isolated power supplies on base station backhaul cards from lightning-induced surges. IC Role / Device Role / Timing Role: Secondary-level TVS in cascade with gas discharge tube (GDT) front-end. Use Value: Provides low-clamping-voltage follow-on protection after GDT fires, reducing residual let-through to <55 V. |
Use Scenario: Protecting gate driver IC bias rails in solar inverter motor control boards subjected to grid switching transients. IC Role / Device Role / Timing Role: Zener clamp on isolated 33 V auxiliary supply feeding high-side gate drivers. Use Value: Ensures gate driver undervoltage lockout remains inactive during 300 W surge events, preserving PWM fidelity. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener-based transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ33A | Higher clamping voltage (64.3 V at 5.5 A), larger SMB package (DO-214AA), bidirectional variant available | Less precise 33 V rail clamping; better suited for general-purpose board-level ESD where tighter voltage tolerance is not required | Select SMBJ33A only if PCB layout accommodates larger footprint and higher clamping voltage is acceptable for protected ICs |
| P6SMB33A | Same DO-214AA (SMB) package; 300 W rating but 64.3 V clamping; higher leakage (≤10 µA at 26.4 V) | Designed for cost-sensitive consumer electronics; lacks BZG04-33TR3's glass passivation and tight VZ tolerance | Prefer BZG04-33TR3 for industrial or automotive designs requiring long-term stability and low leakage under thermal stress |
Compared with SMBJ33A and P6SMB33A, the BZG04-33TR3 delivers tighter Zener voltage tolerance (±2.1%), lower clamping voltage (54.1 V vs. ≥64.3 V), and superior thermal resistance (25 K/W junction-to-lead), making it optimal for space-constrained, high-reliability 33 V rail protection where precision and longevity are critical.
Availability
BZG04-33TR3 is available at Aetrix Electronics and suitable for industrial power supply protection, automotive ECU input protection, and telecom line interface protection requiring stable component supply, consistent parametric performance, and full traceability across production batches.
Supply support for BZG04-33TR3 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 passive and active components for demanding industrial, automotive, and computing applications.
The BZG04-Series was engineered specifically for high-energy transient suppression in compact SMT formats, targeting designers needing precise Zener voltage control, fast response, and proven surge endurance in harsh environments.
FAQ
What is the Zener voltage tolerance of the BZG04-33TR3?
The BZG04-33TR3 has a Zener voltage range of 37 V minimum to 39.8 V maximum at test current IZT = 10 mA, corresponding to a ±2.1% tolerance around the nominal 33 V standoff rating. This tight tolerance ensures predictable clamping behavior in precision 33 V rail protection circuits and is verified per Vishay Document Number 85594 Rev. 2.2.
Does the BZG04-33TR3 meet RoHS and lead-free requirements?
Yes, the BZG04-33TR3 is a lead (Pb)-free component fully compliant with EU RoHS Directive 2002/95/EC and WEEE 2002/96/EC, as confirmed in the official Vishay BZG04-Series datasheet. Its termination finish uses matte tin plating, and no ozone-depleting substances were used in manufacturing.
What is the maximum clamping voltage for the BZG04-33TR3 under surge conditions?
The BZG04-33TR3 clamps to 54.1 V at a peak pulse current of 5.5 A using a 10/1000 µs waveform, as specified in the Electrical Characteristics table of the Vishay datasheet. This value represents the maximum voltage imposed on the protected circuit during standardized surge testing.
Can the BZG04-33TR3 be used in automotive applications?
Yes, the BZG04-33TR3 is qualified for automotive use with a junction temperature range of -65 °C to +150 °C and surge ratings exceeding ISO 7637-2 Pulse 5a requirements. Its glass-passivated junction and DO-214AC package support reliability in engine bay and ECU environments where thermal cycling and vibration are present.
What is the thermal resistance from junction to ambient for the BZG04-33TR3?
The BZG04-33TR3 exhibits a junction-to-ambient thermal resistance (RthJA) of 150 K/W when mounted on epoxy-glass hard tissue (Fig. 1a), 125 K/W on same substrate with improved copper area (Fig. 1b), and 100 K/W on Al2O3 ceramic - values critical for calculating safe power derating in real-world PCB layouts.
BZG04-33TR3 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):
- 33V
- Voltage - Breakdown (Min):
- 37V
- Voltage - Clamping (Max) @ Ipp:
- 54.1V
- Current - Peak Pulse (10/1000µs):
- 5.5A
- Power - Peak Pulse:
- 300W
- Power Line Protection:
- No
- Applications:
- -
- Capacitance @ Frequency:
- 420pF @ 1MHz
- Operating Temperature:
- -
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AC (SMA)
BZG04-33TR3 FAQ
1.How can I place an order for BZG04-33TR3 through Aetrix?
Please submit a Request for Quotation (RFQ) for BZG04-33TR3 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 BZG04-33TR3 reliable?
The price and inventory of BZG04-33TR3 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZG04-33TR3 is usually 5 days.
3.What payment methods are accepted for BZG04-33TR3?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZG04-33TR3 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZG04-33TR3?
BZG04-33TR3 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZG04-33TR3 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 BZG04-33TR3?
For technical support, including BZG04-33TR3 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZG04-33TR3 requirements.
6.How does Aetrix verify that BZG04-33TR3 is sourced from the original manufacturer or authorized distributors?
All BZG04-33TR3 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 BZG04-33TR3 meets industry standards.
7.What is the process for return or replacement of BZG04-33TR3?
All BZG04-33TR3 units undergo pre-shipment inspection (PSI). If there is an issue with BZG04-33TR3, 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 BZG04-33TR3 part is unused and in its original packaging.
Return procedure for BZG04-33TR3:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZG04-33TR3 Tags
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