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Vishay General Semiconductor - Diodes Division BZG04-24TR3
- Part No.:
- BZG04-24TR3
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
BZG04-24TR3.pdf
- Description:
- TVS DIODE 24VWM 42.2VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:2,763
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Product details
Overview
BZG04-24TR3 from Vishay Semiconductors is a glass-passivated Zener diode designed for high-energy transient voltage suppression in power supply and interface protection circuits. It features a 24 V standoff voltage, 42.2 V clamping voltage at 7.1 A peak pulse current, 300 W non-repetitive surge power rating, and DO-214AC (SMA) package with 150 °C junction temperature rating - deployed in industrial power input stages and automotive body control modules.
For engineers reviewing the BZG04-24TR3 datasheet, BZG04-24TR3 pinout, BZG04-24TR3 application, or BZG04-24TR3 equivalent, key selection criteria include clamping voltage margin vs. protected IC rail, surge current handling under 10/1000 µs waveform, thermal resistance to PCB pad layout, and RoHS-compliant lead-free termination for reflow compatibility.
Technical Context
The BZG04-24TR3 operates as a unidirectional voltage clamp, leveraging avalanche breakdown to divert transient energy away from downstream circuitry. Its fast response time (≤1 ps) ensures sub-nanosecond turn-on during ESD or lightning-induced surges, while its glass-passivated junction guarantees stable Zener voltage tolerance and long-term reliability under repeated stress.
Thermal performance is defined by junction-to-lead resistance of 25 K/W and junction-to-ambient resistance ranging from 100–150 K/W depending on PCB mounting configuration (epoxy-glass or Al₂O₃ ceramic). Power derating follows linear reduction above 50 °C ambient, with full 3 W dissipation only achievable below 100 °C when RthJA < 25 K/W.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Standoff Voltage (VR) | 24 V - maximum continuous reverse voltage before significant leakage; sets minimum operating margin for protected 24 V systems. |
| Clamping Voltage (VCL) | 42.2 V at IPP = 7.1 A (10/1000 µs) - peak voltage seen by protected circuit during worst-case surge event. |
| Surge Power Rating (PZSM) | 300 W - defines single-pulse energy handling capability (≈300 mJ for 1 ms pulse), critical for IEC 61000-4-5 compliance. |
| Junction Temperature (Tj) | 150 °C - maximum allowable junction temperature; requires thermal design to limit steady-state power and transient heating. |
| Package | DO-214AC (SMA) - surface-mount package with 2.5 mm x 4.5 mm footprint, compatible with standard reflow profiles and automated placement. |
| RoHS Compliance | Lead-free, per Directive 2002/95/EC - enables use in consumer, industrial, and automotive electronics without hazardous substance restrictions. |
Pinout & Package
DO-214AC (SMA) package: molded epoxy case with axial leads trimmed and formed for surface-mount soldering; cathode indicated by band; total weight ≈ 77 mg.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry point during forward conduction; grounded or connected to lower potential node in clamp configuration. | Must be routed with low-inductance path to ground plane when used in TVS mode to minimize clamping overshoot. |
| Cathode | Current exit point during reverse-bias clamping; connected to protected line (e.g., 24 V rail). | Band-marked terminal; connects directly to the node requiring overvoltage protection - determines polarity of transient suppression. |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Enables stable Zener voltage over lifetime and improved moisture resistance vs. silicon nitride passivation - critical for outdoor or high-humidity environments. |
| Fast response time ≤1 ps | Ensures clamping activation before transient edge propagates into sensitive ICs - essential for protecting CAN transceivers and microcontroller I/O pins. |
| 300 W peak surge power (10/1000 µs) | Supports Level 4 IEC 61000-4-5 surge immunity (4 kV line-to-earth) without external series impedance in many 24 V industrial designs. |
| DO-214AC surface-mount package | Reduces board space vs. axial DO-41; enables automated assembly and consistent thermal coupling to copper pour for enhanced power handling. |
Applications
| Industrial PLC Input Protection | Automotive Body Control Module (BCM) |
|---|---|
Use Scenario: 24 V DC digital input channel exposed to load dump and inductive switching transients in factory automation cabinets. IC Role / Device Role / Timing Role: Unidirectional transient voltage suppressor placed between field wiring and optocoupler input stage. Use Value: Limits voltage to ≤42.2 V during 10/1000 µs surges up to 7.1 A, preventing optocoupler damage and false triggering. |
Use Scenario: 24 V supply rail feeding microcontroller peripherals in vehicle door module subject to ISO 7637-2 Pulse 5a (load dump). IC Role / Device Role / Timing Role: Primary clamping device shunting surge current to chassis ground before reaching LDO regulators. Use Value: Absorbs 300 W peak surge energy within 1 ms, maintaining downstream rail stability and avoiding brownout resets. |
| Telecom Power Interface | Renewable Energy Charge Controller |
Use Scenario: 24 V PoE-powered remote radio unit input subjected to lightning-induced surges on outdoor cabling. IC Role / Device Role / Timing Role: First-stage protection element ahead of DC-DC converter and Ethernet PHY. Use Value: Clamps induced transients to safe levels before they couple into signal lines, preserving data integrity and link uptime. |
Use Scenario: 24 V battery charging circuit in solar off-grid system exposed to generator switching spikes and grid coupling noise. IC Role / Device Role / Timing Role: Reverse-polarity and overvoltage protector across charge controller input terminals. Use Value: Blocks >24 V transients while allowing normal charging current flow; withstands repeated 50 A surge events per spec. |
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 |
|---|---|---|---|
| SMBJ24A | Higher clamping voltage (38.9 V @ 7.7 A), larger SMB package (3.5 × 4.5 mm), 600 W surge rating. | Better suited for higher-energy surges but requires more PCB area; less precise voltage matching for tight 24 V margins. | Select when surge energy exceeds 300 mJ or when higher Ipp derating margin is required. |
| P6SMB24A | Same DO-214AC package, identical 24 V standoff, but 600 W PZSM rating and 38.9 V clamping at 10.3 A. | Offers greater surge headroom but slightly higher clamping voltage; may require revalidation of downstream voltage tolerances. | Prefer when legacy P6SMB footprint compatibility is needed or when designing for extended surge life cycles. |
Compared with SMBJ24A and P6SMB24A, the BZG04-24TR3 delivers tighter clamping (42.2 V vs. ≥38.9 V) in a compact DO-214AC outline, making it optimal for space-constrained 24 V systems where voltage margin is critical and surge energy remains within 300 W limits.
Availability
BZG04-24TR3 is available at Aetrix Electronics and suitable for industrial PLC input protection, automotive BCM power rails, and telecom power interfaces requiring stable component supply and RoHS-compliant transient suppression.
Supply support for BZG04-24TR3 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, and optoelectronics for industrial, automotive, and computing markets.
The BZG04-Series was engineered specifically for robust, high-surge transient voltage suppression in 8.2–220 V DC systems, emphasizing glass passivation, fast response, and repeatable clamping performance under real-world surge conditions.
FAQ
What is the maximum clamping voltage of the BZG04-24TR3 under standard test conditions?
The BZG04-24TR3 has a maximum clamping voltage of 42.2 V when subjected to a 10/1000 µs surge pulse at 7.1 A peak current, as specified in the Vishay datasheet Document Number 85594. This value defines the upper voltage limit imposed on protected circuitry during transient events and must be compared against the absolute maximum ratings of downstream components to ensure safe operation. The BZG04-24TR3 maintains this clamping performance across its rated junction temperature range.
Is the BZG04-24TR3 suitable for bidirectional transient suppression?
No, the BZG04-24TR3 is a unidirectional Zener diode intended for single-polarity clamping - it conducts only in reverse breakdown and blocks forward current above ~1.2 V. For bidirectional protection (e.g., AC lines or differential data buses), a pair of BZG04-24TR3 devices in series opposition or a dedicated bidirectional TVS like SMAJ24CA would be required. The BZG04-24TR3 datasheet confirms its unidirectional construction and specifies parameters only for reverse-bias operation.
What is the thermal resistance from junction to ambient for the BZG04-24TR3 in standard mounting?
The BZG04-24TR3 exhibits a junction-to-ambient thermal resistance (RthJA) of 150 K/W when mounted on an epoxy-glass hard tissue PCB per Figure 1a in the Vishay datasheet, and 125 K/W using the configuration in Figure 1b. With an aluminum oxide ceramic substrate (Al₂O₃), RthJA improves to 100 K/W. These values directly impact steady-state power dissipation limits and must be applied in thermal calculations for the BZG04-24TR3 in continuous or repetitive surge scenarios.
Does the BZG04-24TR3 meet automotive qualification standards?
The BZG04-24TR3 is not AEC-Q200 qualified, though it is widely used in automotive body control modules due to its 150 °C junction rating, RoHS compliance, and robust surge performance. Vishay does not list AEC-Q200 testing for the BZG04-Series in Document 85594. For production automotive applications requiring formal qualification, designers should verify with Vishay's latest automotive-grade alternatives or perform in-house stress validation of the BZG04-24TR3 per their specific environmental and lifetime requirements.
How does the BZG04-24TR3 differ from the BZG04-24TR variant?
The BZG04-24TR3 differs from BZG04-24TR solely in packaging quantity and reel size: BZG04-24TR3 ships on a 13-inch reel with 6,000 units per reel and 6,000 units per box, whereas BZG04-24TR uses a 7-inch reel with 1,500 units. Both share identical electrical specifications, DO-214AC package, glass-passivated die, and thermal characteristics per Vishay Document 85594. No parametric or reliability differences exist between the TR and TR3 suffixes.
BZG04-24TR3 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):
- 24V
- Voltage - Breakdown (Min):
- 28V
- Voltage - Clamping (Max) @ Ipp:
- 42.2V
- Current - Peak Pulse (10/1000µs):
- 7.1A
- Power - Peak Pulse:
- 300W
- Power Line Protection:
- No
- Applications:
- -
- Capacitance @ Frequency:
- 505pF @ 1MHz
- Operating Temperature:
- -
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AC (SMA)
BZG04-24TR3 FAQ
1.How can I place an order for BZG04-24TR3 through Aetrix?
Please submit a Request for Quotation (RFQ) for BZG04-24TR3 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 BZG04-24TR3 reliable?
The price and inventory of BZG04-24TR3 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZG04-24TR3 is usually 5 days.
3.What payment methods are accepted for BZG04-24TR3?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZG04-24TR3 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZG04-24TR3?
BZG04-24TR3 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZG04-24TR3 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 BZG04-24TR3?
For technical support, including BZG04-24TR3 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZG04-24TR3 requirements.
6.How does Aetrix verify that BZG04-24TR3 is sourced from the original manufacturer or authorized distributors?
All BZG04-24TR3 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 BZG04-24TR3 meets industry standards.
7.What is the process for return or replacement of BZG04-24TR3?
All BZG04-24TR3 units undergo pre-shipment inspection (PSI). If there is an issue with BZG04-24TR3, 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 BZG04-24TR3 part is unused and in its original packaging.
Return procedure for BZG04-24TR3:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZG04-24TR3 Tags
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