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Vishay General Semiconductor - Diodes Division BZG04-9V1TR3
- Part No.:
- BZG04-9V1TR3
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
BZG04-9V1TR3.pdf
- Description:
- TVS DIODE 9.1VWM 15.7VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:2,327
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Product details
Overview
BZG04-9V1TR3 from Vishay Semiconductors is a glass-passivated Zener diode optimized for transient voltage suppression in DC power rails and signal lines, featuring a nominal standoff voltage of 9.1 V, clamping voltage of 15.7 V at 20.3 A peak pulse current, 300 W non-repetitive surge power rating, and DO-214AC (SMA) package with 77 mg mass.
For engineers reviewing the BZG04-9V1TR3 datasheet, BZG04-9V1TR3 pinout, BZG04-9V1TR3 application, or BZG04-9V1TR3 equivalent, key selection criteria include clamping performance under 10/1000 µs surge, thermal resistance to ambient (125 K/W on epoxy-glass hard tissue), junction temperature limit (150 °C), and RoHS-compliant lead-free construction.
Technical Context
The BZG04-9V1TR3 operates as a unidirectional voltage clamp, leveraging avalanche breakdown to divert surge energy away from sensitive circuitry. Its fast response time (≤1 ps) ensures protection against nanosecond-scale transients, while its 25 K/W junction-to-lead thermal resistance supports localized heat dissipation during short-duration surges.
Designed for surface-mount use in high-reliability industrial and automotive environments, the device maintains stable Zener voltage across operating temperatures via low voltage temperature coefficient (0.05 %/K) and exhibits 1100 pF junction capacitance at 0 V, minimizing signal distortion in data-line applications.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Standoff Voltage (VR) | 9.1 V - Maximum continuous reverse voltage before significant leakage; defines operating margin below clamping threshold. |
| Clamping Voltage (VCL) | 15.7 V at IPP = 20.3 A (10/1000 µs) - Peak voltage seen by protected circuit during worst-case surge event. |
| Surge Power Rating (PZSM) | 300 W - Non-repetitive peak power handling capability; determines survivability against lightning or ESD-induced pulses. |
| Junction Temperature (Tj) | 150 °C - Maximum allowable semiconductor junction temperature; constrains sustained power dissipation and PCB layout thermal design. |
| Junction Capacitance (Cj) | 1100 pF at VR = 0 V, f = 1 MHz - Impacts high-frequency signal integrity; suitable for <10 MHz analog or low-speed digital line protection. |
| Thermal Resistance RthJA | 125 K/W (epoxy-glass hard tissue, Fig. 1b) - Quantifies temperature rise per watt; critical for derating power in real-world board layouts. |
| Zener Voltage Tempco | 0.05 %/K - Low drift ensures stable clamping over industrial temperature range (-65 °C to +150 °C). |
Pinout & Package
Package: DO-214AC (SMA), surface-mount, molded plastic case with axial leads trimmed and formed for gull-wing mounting; mechanical outline per Vishay drawing 19628; weight ≈ 77 mg.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | High-impedance reference node during normal operation; low-impedance sink during reverse-bias clamping | Connected to protected line; conducts surge current to ground when transient exceeds 9.1 V. |
| Anode | Return path for clamped current | Typically tied to system ground or lower-potential rail; completes current loop during overvoltage events. |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Enables stable long-term Zener voltage and leakage performance under humidity and thermal cycling stress. |
| Fast response time ≤1 ps | Ensures clamping activation before transient energy couples into downstream ICs, critical for IEC 61000-4-5 compliance. |
| 300 W peak surge power (10/1000 µs) | Supports robust protection against Level 4 lightning surges (4 kV/2 kA) in industrial power supply inputs. |
| RoHS-compliant, lead-free | Meets EU Directive 2002/95/EC and WEEE 2002/96/EC; enables use in environmentally regulated OEM production. |
| DO-214AC package | Standardized SMT footprint compatible with automated placement and reflow; allows direct replacement of SMA-package TVS diodes. |
Applications
| Industrial PLC I/O Protection | Automotive Body Control Module (BCM) Power Rails |
|---|---|
Use Scenario: 24 V DC input terminals exposed to load-dump transients up to 35 V and ISO 7637-2 Pulse 5a. IC Role / Device Role / Timing Role: Primary transient voltage suppressor placed at connector entry point before DC-DC converter input. Use Value: Clamps surge to ≤15.7 V within 1 ps, preventing damage to upstream LDOs and microcontrollers rated for 16 V absolute max. |
Use Scenario: 12 V battery-supplied circuits subjected to jump-start spikes (up to 28 V) and alternator ripple. IC Role / Device Role / Timing Role: Secondary overvoltage clamp after primary fuse and LC filter, protecting CAN transceivers and sensor interfaces. Use Value: 1100 pF capacitance avoids signal degradation on 500 kbps CAN bus lines while sustaining 300 W surge without failure. |
| Telecom Line Card Surge Protection | Medical Equipment Power Entry Filtering |
Use Scenario: -48 V DC telecom power feed encountering induced surges from nearby lightning strikes. IC Role / Device Role / Timing Role: Back-to-back configuration with complementary diode for bidirectional clamping on power pair. Use Value: 125 K/W RthJA enables reliable operation on FR4 boards without heatsinking, meeting GR-1089-CORE Level 3 requirements. |
Use Scenario: AC/DC adapter output stage protecting isolated patient-connected subsystems from mains-coupled transients. IC Role / Device Role / Timing Role: Final-stage clamp before linear regulator feeding analog front-end and ADC reference circuits. Use Value: 0.05 %/K tempco ensures clamping voltage remains within ±0.5 V over -20 °C to +70 °C ambient, preserving measurement accuracy. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener-based transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ9.0A (Bourns) | Higher clamping voltage (15.4 V @ 21.6 A), same DO-214AA (SMB) package; 600 W PZSM rating. | Preferred for higher-energy surges where board space permits larger SMB footprint; not drop-in due to different package outline. | Select when surge energy exceeds 300 W and PCB layout accommodates wider body (4.5 mm vs. 2.8 mm width). |
| P6SMB9.1A (Littelfuse) | Identical electrical specs (9.1 V VR, 15.7 V VCL @ 20.3 A), DO-214AA (SMB) package; 600 W PZSM. | Same clamping performance but requires footprint adaptation; thermal resistance differs (110 K/W vs. 125 K/W). | Choose for second-source assurance if DO-214AA is already standardized; verify thermal derating on existing layout. |
Compared with SMBJ9.0A and P6SMB9.1A, the BZG04-9V1TR3 offers tighter thermal resistance control in DO-214AC, enabling higher sustained power density in space-constrained designs, while maintaining identical clamping behavior at the cost of lower surge power headroom.
Availability
BZG04-9V1TR3 is available at Aetrix Electronics and suitable for industrial PLC I/O protection, automotive BCM power rails, and telecom line card surge suppression requiring stable component supply, full traceability, and RoHS-compliant manufacturing.
Supply support for BZG04-9V1TR3 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 targets high-surge industrial and transportation systems, delivering precision Zener clamping with enhanced thermal robustness and glass-passivated stability for mission-critical overvoltage protection.
FAQ
What is the maximum clamping voltage of the BZG04-9V1TR3 under standard test conditions?
The BZG04-9V1TR3 has a maximum clamping voltage of 15.7 V when subjected to a 10/1000 µs surge pulse at 20.3 A peak current, measured per IEC 61000-4-5 guidelines. This value is specified in the Vishay datasheet Document Number 85594 Rev. 2.2 and represents the upper bound of voltage seen by protected circuitry during worst-case transient events. The BZG04-9V1TR3 maintains this clamping performance across its qualified operating temperature range.
Is the BZG04-9V1TR3 suitable for bidirectional transient protection?
No, the BZG04-9V1TR3 is a unidirectional Zener diode intended for single-polarity clamping-typically cathode to protected line, anode to ground. For bidirectional protection, two BZG04-9V1TR3 devices must be connected in series opposition, or a dedicated bidirectional TVS like SMAJ9.0CA should be selected. The BZG04-9V1TR3 datasheet specifies only reverse-bias breakdown characteristics and does not characterize forward conduction beyond VF = 1.2 V at 0.5 A.
What is the thermal resistance from junction to ambient for the BZG04-9V1TR3 on a standard PCB layout?
The BZG04-9V1TR3 exhibits a junction-to-ambient thermal resistance (RthJA) of 125 K/W when mounted on epoxy-glass hard tissue per Figure 1b in the Vishay datasheet. This value assumes a defined copper pad area and is used to calculate safe power derating; for example, at 70 °C ambient, maximum continuous power drops to ~0.64 W. The BZG04-9V1TR3's 25 K/W RthJL enables efficient local heat transfer to PCB copper pours.
Does the BZG04-9V1TR3 meet RoHS and lead-free requirements?
Yes, the BZG04-9V1TR3 is explicitly certified as lead (Pb)-free and compliant with RoHS Directive 2002/95/EC and WEEE Directive 2002/96/EC, as stated in the Vishay BZG04-Series datasheet. It contains no ozone-depleting substances and conforms to Vishay's ODS elimination policy. The BZG04-9V1TR3 is suitable for use in environmentally regulated production environments without exemption requests.
How does the BZG04-9V1TR3 compare to standard 1N4737A Zener diodes in surge protection applications?
The BZG04-9V1TR3 is engineered specifically for transient suppression, offering 300 W peak surge power (vs. ~1–5 W for 1N4737A), sub-picosecond response time (vs. nanosecond-scale for general-purpose Zeners), and DO-214AC SMT packaging (vs. axial DO-41). While both regulate at ~9.1 V, the BZG04-9V1TR3's robust surge rating and low clamping ratio make it unsuitable for voltage regulation but ideal for protection-unlike the 1N4737A which lacks surge-rated characterization. The BZG04-9V1TR3 is not a functional replacement for 1N4737A in regulation roles.
BZG04-9V1TR3 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):
- 9.1V
- Voltage - Breakdown (Min):
- 10.4V
- Voltage - Clamping (Max) @ Ipp:
- 15.7V
- Current - Peak Pulse (10/1000µs):
- 19.1A
- Power - Peak Pulse:
- 300W
- Power Line Protection:
- No
- Applications:
- -
- Capacitance @ Frequency:
- 1100pF @ 1MHz
- Operating Temperature:
- -
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AC (SMA)
BZG04-9V1TR3 FAQ
1.How can I place an order for BZG04-9V1TR3 through Aetrix?
Please submit a Request for Quotation (RFQ) for BZG04-9V1TR3 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 BZG04-9V1TR3 reliable?
The price and inventory of BZG04-9V1TR3 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZG04-9V1TR3 is usually 5 days.
3.What payment methods are accepted for BZG04-9V1TR3?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZG04-9V1TR3 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZG04-9V1TR3?
BZG04-9V1TR3 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZG04-9V1TR3 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 BZG04-9V1TR3?
For technical support, including BZG04-9V1TR3 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZG04-9V1TR3 requirements.
6.How does Aetrix verify that BZG04-9V1TR3 is sourced from the original manufacturer or authorized distributors?
All BZG04-9V1TR3 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 BZG04-9V1TR3 meets industry standards.
7.What is the process for return or replacement of BZG04-9V1TR3?
All BZG04-9V1TR3 units undergo pre-shipment inspection (PSI). If there is an issue with BZG04-9V1TR3, 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 BZG04-9V1TR3 part is unused and in its original packaging.
Return procedure for BZG04-9V1TR3:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZG04-9V1TR3 Tags
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