My Inquiry
My Account
Vishay General Semiconductor - Diodes Division BZG04-120TR3
- Part No.:
- BZG04-120TR3
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
BZG04-120TR3.pdf
- Description:
- TVS DIODE 120VWM 204VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:6,442
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
BZG04-120TR3 from Vishay Semiconductors is a glass-passivated, high-reliability Zener diode designed for transient voltage suppression in power rails and signal lines. It features a 120 V standoff voltage, 204 V clamping voltage at 1.5 A peak pulse current, 300 W non-repetitive surge power rating, and DO-214AC (SMA) package with RoHS-compliant lead-free construction. It is used in industrial power supply overvoltage protection circuits.
For engineers reviewing the BZG04-120TR3 datasheet, BZG04-120TR3 pinout, BZG04-120TR3 application, or BZG04-120TR3 equivalent, key selection criteria include clamping voltage margin vs. system rail, surge current capability under 10/1000 µs waveform, thermal resistance to PCB pad layout, and compatibility with automated SMT placement on 7" or 13" reels.
Technical Context
The BZG04-120TR3 operates as a unidirectional voltage-clamping device with a precisely defined breakdown voltage of 138 V (min) to 153 V (max) at 5 µA test current. Its fast response time (≤1 ps) enables effective suppression of nanosecond-scale transients such as ESD and lightning-induced surges.
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 real-world mounting configurations.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Standoff Voltage (VR) | 120 V - Maximum continuous reverse voltage before significant leakage begins |
| Breakdown Voltage (V(BR)) | 138–153 V @ 5 µA - Ensures stable clamping onset across manufacturing variation |
| Clamping Voltage (VCL) | 204 V @ 1.5 A, 10/1000 µs - Defines worst-case voltage seen by protected circuit during surge |
| Surge Power (PZSM) | 300 W - Peak non-repetitive dissipation capability for transient events |
| Junction Temp Limit | 150 °C - Sets maximum allowable operating temperature for reliability |
| Package | DO-214AC (SMA) - Standard surface-mount outline compatible with IPC-7351B footprint |
| RoHS Compliance | e3 matte tin lead finish - Lead-free, halogen-free, compliant with EU directives |
Pinout & Package
DO-214AC (SMA) package: molded plastic body with axial leads trimmed and formed for surface-mount use; cathode indicated by band; typical weight 77 mg.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal | Connected to lower-potential side of protected node; carries forward current up to 0.5 A |
| Cathode | Zener breakdown terminal | Connected to higher-potential rail; defines clamping reference point and surge return path |
Key Features
| Feature | Design Value |
|---|---|
| Glass passivated junction | Enables stable long-term Zener voltage and low leakage (<5 µA at VR) under humidity and thermal cycling |
| Fast response time ≤1 ps | Provides effective suppression of sub-nanosecond ESD events without delay-induced overshoot |
| 300 W surge rating (10/1000 µs) | Supports IEC 61000-4-5 Level 4 (4 kV) surge immunity when properly mounted |
| DO-214AC package | Offers standardized SMT assembly, thermal pad compatibility, and mechanical robustness for industrial reflow |
Applications
| Industrial Power Supply Protection | Automotive Body Control Module |
|---|---|
Use Scenario: Protecting 120 V DC intermediate bus in programmable logic controller (PLC) power stages from load dump and inductive switching spikes. IC Role / Device Role / Timing Role: Unidirectional transient voltage suppressor placed between rail and ground, activated only during overvoltage events. Use Value: Limits transient voltage to ≤204 V, preventing damage to downstream DC-DC converters and microcontrollers rated for 220 V max. | Use Scenario: Safeguarding LIN bus interface ICs in door module ECUs against battery reverse connection and jump-start surges. IC Role / Device Role / Timing Role: Standby clamping diode connected anode-to-ground, cathode-to-LIN line, conducting only during negative transients. Use Value: Withstands 50 A peak forward surge current, enabling survival of 12 V system reverse polarity tests per ISO 16750-2. |
| Telecom AC/DC Front-End | Renewable Energy Inverter DC Link |
Use Scenario: Secondary-side overvoltage clamp on 48 V telecom rectifier output, guarding against regulator failure-induced overvoltage. IC Role / Device Role / Timing Role: Precision Zener reference and surge limiter combined in single device; operates in reverse-bias clamping mode. Use Value: Tight 138–153 V breakdown tolerance ensures predictable activation without false triggering during normal 48 V ±10 % ripple. | Use Scenario: DC link voltage clamp in 1000 V solar string inverters, protecting IGBT gate drivers during DC bus overvoltage faults. IC Role / Device Role / Timing Role: High-energy transient suppressor mounted directly across DC+ and DC− terminals near power stage. Use Value: 300 W surge rating and 100 K/W RthJA on ceramic substrate allow safe dissipation of 100 µs energy bursts 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 |
|---|---|---|---|
| SMBJ120A | Higher clamping voltage (209 V), same DO-214AA package, 600 W surge rating | Designed for bidirectional TVS use; lacks tight Zener tolerance and precision breakdown control | Select when higher surge margin is needed and bidirectional protection is acceptable |
| P6SMB120A | Same 120 V standoff, but 600 W Pppm, DO-214AA package, wider VBR tolerance (133–147 V) | Optimized for general-purpose surge suppression, not precision voltage regulation | Choose for cost-sensitive designs where ±5 % VBR tolerance is sufficient and 6 kV IEC 61000-4-5 compliance is required |
Compared with SMBJ120A and P6SMB120A, the BZG04-120TR3 offers tighter breakdown voltage control (138–153 V vs. 133–147 V), lower clamping voltage (204 V), and Zener-specific stability for applications requiring predictable turn-on behavior-not just energy absorption.
Availability
BZG04-120TR3 is available at Aetrix Electronics and suitable for industrial power supplies, automotive body electronics, telecom rectifiers, and renewable energy inverters requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for BZG04-120TR3 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 precision transient voltage suppression in high-voltage DC systems, emphasizing stable Zener characteristics, low capacitance, and repeatable surge performance under real-world PCB thermal conditions.
FAQ
What is the exact breakdown voltage range for BZG04-120TR3?
The BZG04-120TR3 has a guaranteed breakdown voltage range of 138 V minimum to 153 V maximum when tested at 5 µA reverse current, as specified in the Vishay BZG04-Series datasheet (Doc. #85594, Rev. 2.2). This tolerance reflects process-controlled Zener characteristics essential for predictable clamping behavior in safety-critical protection circuits.
Does BZG04-120TR3 support automated SMT assembly?
Yes, BZG04-120TR3 uses the DO-214AC (SMA) package, which is fully compatible with standard surface-mount reflow processes including lead-free soldering profiles. Its e3 matte tin finish and 77 mg mass ensure reliable pick-and-place yield and thermal stability during reflow, making BZG04-120TR3 suitable for high-volume production lines.
What is the maximum clamping voltage of BZG04-120TR3 under surge conditions?
The BZG04-120TR3 exhibits a maximum clamping voltage of 204 V when subjected to a 10/1000 µs surge waveform at 1.5 A peak current, per the official Vishay datasheet. This value defines the upper voltage limit imposed on protected circuitry during transient events and is critical for ensuring downstream component survivability.
Can BZG04-120TR3 be used for bidirectional transient suppression?
No, BZG04-120TR3 is a unidirectional Zener diode intended for reverse-bias clamping only. It does not provide symmetrical protection for both positive and negative transients. For bidirectional applications, a dedicated bidirectional TVS like SMBJ120CA would be required - BZG04-120TR3 must be used with correct polarity orientation in the circuit.
What thermal resistance values apply to BZG04-120TR3 in PCB design?
BZG04-120TR3 has a junction-to-lead thermal resistance (RthJL) of 25 K/W and junction-to-ambient resistance (RthJA) ranging from 100 K/W (on Al₂O₃ ceramic) to 150 K/W (on standard epoxy-glass PCB), depending on copper area and mounting method. These values directly impact power derating and must be applied in thermal modeling for BZG04-120TR3 in sustained surge scenarios.
BZG04-120TR3 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):
- 120V
- Voltage - Breakdown (Min):
- 138V
- Voltage - Clamping (Max) @ Ipp:
- 204V
- Current - Peak Pulse (10/1000µs):
- 1.5A
- Power - Peak Pulse:
- 300W
- Power Line Protection:
- No
- Applications:
- -
- Capacitance @ Frequency:
- 150pF @ 1MHz
- Operating Temperature:
- -
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AC (SMA)
BZG04-120TR3 FAQ
1.How can I place an order for BZG04-120TR3 through Aetrix?
Please submit a Request for Quotation (RFQ) for BZG04-120TR3 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 BZG04-120TR3 reliable?
The price and inventory of BZG04-120TR3 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZG04-120TR3 is usually 5 days.
3.What payment methods are accepted for BZG04-120TR3?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZG04-120TR3 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZG04-120TR3?
BZG04-120TR3 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZG04-120TR3 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 BZG04-120TR3?
For technical support, including BZG04-120TR3 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZG04-120TR3 requirements.
6.How does Aetrix verify that BZG04-120TR3 is sourced from the original manufacturer or authorized distributors?
All BZG04-120TR3 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 BZG04-120TR3 meets industry standards.
7.What is the process for return or replacement of BZG04-120TR3?
All BZG04-120TR3 units undergo pre-shipment inspection (PSI). If there is an issue with BZG04-120TR3, 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 BZG04-120TR3 part is unused and in its original packaging.
Return procedure for BZG04-120TR3:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZG04-120TR3 Tags
-
ESD9B5.0ST5G
onsemi
-
DESD3V3E1BL-7B
Diodes Incorporated
-
ESD5Z3.3T1G
onsemi
-
D5V0H1B2LP-7B
Diodes Incorporated
-
D5V0P1B2LP-7B
Diodes Incorporated
-
DESD5V0U1BA-7
Diodes Incorporated
-
ESD5Z5.0T1G
onsemi
-
DESD5V0U1BB-7
Diodes Incorporated
-
D12V0L1B2LP-7B
Diodes Incorporated
-
PESD2V0Y1BSFYL
Nexperia USA Inc.
-
DF2S5M4CT,L3F
Toshiba Semiconductor and Storage
-
D5V0L1B2WS-7
Diodes Incorporated
Tech Hub
Schmitt triggers use separate rising and falling thresholds to stabilize slow or noisy signals. This guide covers hysteresis, 74HC14 and 74HCT14 selection, comparator calculations, RC oscillators and p…
Counterfeit components can hide behind convincing markings and passing basic function tests. This engineering reference covers source traceability, external inspection, X-ray, XRF, electrical testing, …
A practical engineering and sourcing framework covering lifecycle verification, lifetime-buy calculations, replacement qualification, supplier checks and counterfeit-risk controls.
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
