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Vishay General Semiconductor - Diodes Division BZG04-24TR
- Part No.:
- BZG04-24TR
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
BZG04-24TR.pdf
- Description:
- TVS DIODE 24VWM 42.2VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:2,174
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Product details
Overview
BZG04-24TR from Vishay Semiconductors is a glass-passivated Zener diode designed for transient voltage suppression in DC power rails and signal lines, with a nominal Zener voltage of 24 V, 3 W steady-state power dissipation at 100 °C ambient, 300 W non-repetitive surge power (10/1000 µs), and clamping voltage of 42.2 V at 7.1 A peak pulse current - deployed in industrial motor drives for IGBT gate protection.
For engineers reviewing the BZG04-24TR datasheet, BZG04-24TR pinout, BZG04-24TR application, or BZG04-24TR equivalent, key selection criteria include verified clamping performance under 10/1000 µs surges, DO-214AC package thermal resistance (125 K/W on epoxy-glass hard tissue), and junction temperature limit of 150 °C for sustained reliability in overvoltage-prone environments.
Technical Context
The BZG04-24TR operates as a voltage-reference and transient-clamping device using a glass-passivated PN junction optimized for fast response (≤1 ps rise time) and high-energy surge absorption. Its design targets unidirectional clamping in low-inductance layouts where precise standoff (24 V) and predictable clamping (42.2 V @ 7.1 A) are required to protect downstream MOSFETs or controllers.
Thermal management relies on its DO-214AC case with junction-to-lead resistance of 25 K/W and junction-to-ambient resistance varying from 100 K/W (on Al₂O₃ ceramic) to 150 K/W (on standard epoxy-glass), directly impacting maximum allowable surge repetition rate and continuous power derating above 50 °C ambient.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 24 V nominal, min 25.1 V, max 28 V at IZT = 25 mA - defines precise DC regulation threshold and initial clamping onset. |
| Clamping Voltage (VCL) | 42.2 V at IPP = 7.1 A (10/1000 µs pulse) - determines maximum voltage seen by protected IC during surge events. |
| Surge Power (PZSM) | 300 W non-repetitive, 10/1000 µs waveform - enables single-event suppression of high-energy transients like inductive kickback. |
| Steady-State Power (Pdiss) | 1.25 W at Tamb = 50 °C with RthJA ≤ 100 K/W - sets continuous dissipation limit under typical board-mount conditions. |
| Junction Temperature (Tj) | 150 °C maximum - constrains thermal design margin when operating near power limits or in high-ambient environments. |
| Junction Capacitance (Cj) | 505 pF at VR = 0 V, f = 1 MHz - impacts high-frequency noise coupling and signal integrity in RF-adjacent circuits. |
Pinout & Package
Package: DO-214AC (SMA), molded plastic case with axial leads, 77 mg weight, RoHS-compliant, lead (Pb)-free construction.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (A) | Current entry during forward conduction | Connected to lower-potential side of protected circuit; used for polarity-sensitive placement in series or shunt configurations. |
| Cathode (K) | Current exit during reverse breakdown | Connected to higher-potential rail (e.g., VDD or gate drive node); carries full surge current during clamping operation. |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Enables stable Zener characteristics and long-term reliability under thermal cycling and humidity exposure. |
| Fast response time (≤1 ps) | Minimizes voltage overshoot during nanosecond-scale ESD or lightning-induced transients before clamping engages. |
| High surge capability (300 W, 10/1000 µs) | Supports robust protection against IEC 61000-4-5 Level 4 surges without degradation or failure. |
| DO-214AC package | Provides standardized mechanical footprint compatible with automated SMT placement and reflow profiles (J-STD-020). |
Applications
| Industrial Motor Drive Protection | Automotive Body Control Module |
|---|---|
Use Scenario: Suppressing inductive kickback from solenoid drivers and relay coils in PLC output modules. IC Role / Device Role / Timing Role: Shunt-connected Zener clamp placed across IGBT gate-source terminals to prevent overvoltage damage during switching transitions. Use Value: Limits gate voltage to ≤42.2 V during 7.1 A surge events, preserving gate oxide integrity and ensuring reliable turn-off behavior. | Use Scenario: Protecting LIN bus transceivers and microcontroller I/O pins from load-dump and jump-start transients. IC Role / Device Role / Timing Role: Standoff device in parallel with supply rail (VBAT) to clamp voltage excursions above 24 V during battery connection anomalies. Use Value: Maintains system operation below 42.2 V clamping threshold while surviving 300 W surge pulses per ISO 7637-2 Pulse 5a. |
| Telecom Power Supply Input | Renewable Energy Inverter Control Board |
Use Scenario: Guarding AC-DC converter primary-side controller ICs against line surges and lightning-induced spikes. IC Role / Device Role / Timing Role: Primary-side transient suppressor mounted between rectified DC bus and ground, triggered only during overvoltage events. Use Value: Delivers 24 V reference stability and 42.2 V clamping with <505 pF capacitance to avoid interfering with PWM control loop stability. | Use Scenario: Safeguarding isolated gate drivers and current-sense amplifiers in solar inverter half-bridge stages. IC Role / Device Role / Timing Role: Secondary-side Zener clamp on isolated 15 V auxiliary supply rail feeding gate driver ICs. Use Value: Ensures gate driver supply remains within safe operating range (≤42.2 V) during fast-rising common-mode transients coupled through isolation barriers. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ24A | Higher clamping voltage (38.9 V @ 7.5 A), same DO-214AA package, 600 W surge rating | Designed for higher-energy surges but less precise 24 V regulation (standoff 24 V ±5 % vs. BZG04-24TR's tighter 24 V nominal with 25.1–28 V range) | Select SMBJ24A when surge energy exceeds 300 W but 24 V regulation tolerance is secondary to clamping headroom. |
| P6KE27A | Higher Zener voltage (27 V), larger DO-15 package, 600 W surge, slower response (>1 ns) | Used in legacy through-hole designs; lacks glass passivation and fails RoHS compliance without lead-free variant | Choose P6KE27A only for backward-compatible through-hole replacement where 27 V standoff is acceptable and RoHS is not mandated. |
Compared with SMBJ24A and P6KE27A, the BZG04-24TR offers tighter Zener voltage tolerance, faster response, and RoHS-compliant DO-214AC packaging - making it optimal for modern SMT-based industrial and automotive systems requiring precise 24 V clamping with minimal layout impact.
Availability
BZG04-24TR is available at Aetrix Electronics and suitable for industrial motor drives, automotive body control modules, telecom power supplies, and renewable energy inverter control boards requiring stable component supply and consistent surge performance across production batches.
Supply support for BZG04-24TR 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 manufacturer of discrete semiconductors and passive components, specializing in high-reliability devices for automotive, industrial, and computing applications.
The BZG04-Series was developed specifically for high-energy transient voltage suppression in compact surface-mount formats, targeting applications where precise Zener voltage, fast response, and repeatable surge endurance are critical.
FAQ
What is the Zener voltage tolerance of the BZG04-24TR?
The BZG04-24TR has a specified Zener voltage range of 25.1 V minimum to 28 V maximum at test current IZT = 25 mA, with a nominal value of 24 V. This tolerance reflects manufacturing variation and ensures reliable clamping onset within defined bounds. The BZG04-24TR does not specify a ±% tolerance band but provides explicit min/max values per the Vishay datasheet Document Number 85594 Rev. 2.2.
Is the BZG04-24TR suitable for bidirectional transient suppression?
No, the BZG04-24TR is a unidirectional Zener diode intended for single-polarity clamping. It conducts only in reverse breakdown (cathode positive relative to anode) and forward conduction (anode positive). For bidirectional protection, two BZG04-24TR devices must be connected in series opposition, or a dedicated TVS array such as SMAJ24CA should be used instead of the BZG04-24TR.
What is the maximum surge current the BZG04-24TR can handle?
The BZG04-24TR supports a peak forward surge current (IFSM) of 50 A for a 10 ms single half-sine wave, and a peak pulse current (IPP) of 7.1 A under 10/1000 µs surge conditions. These values are distinct: IFSM applies to forward conduction during fault conditions, while IPP relates to reverse clamping duty. Both are validated limits for the BZG04-24TR per its absolute maximum ratings table.
Does the BZG04-24TR require a heatsink for 3 W continuous operation?
No - the BZG04-24TR's 3 W power dissipation rating applies only at Tamb = 100 °C with RthJA < 25 K/W, a condition unachievable on standard PCBs. At practical mounting (RthJA = 125 K/W), the BZG04-24TR is rated for 1.25 W at 50 °C ambient. Continuous 3 W operation would exceed its thermal limits; the BZG04-24TR is intended for transient, not steady-state, power dissipation.
How does the BZG04-24TR's clamping voltage compare to its Zener voltage?
The BZG04-24TR's clamping voltage (VCL) is 42.2 V at 7.1 A peak pulse current, significantly higher than its Zener voltage (24 V nominal). This difference reflects dynamic impedance rise under surge conditions - the BZG04-24TR's internal resistance causes voltage to increase above VZ during high-current transients. Designers must use VCL, not VZ, to verify protected circuit voltage margins during surge events.
BZG04-24TR 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)
BZG04-24TR FAQ
1.How can I place an order for BZG04-24TR through Aetrix?
Please submit a Request for Quotation (RFQ) for BZG04-24TR 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 BZG04-24TR reliable?
The price and inventory of BZG04-24TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZG04-24TR is usually 5 days.
3.What payment methods are accepted for BZG04-24TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZG04-24TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZG04-24TR?
BZG04-24TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZG04-24TR 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 BZG04-24TR?
For technical support, including BZG04-24TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZG04-24TR requirements.
6.How does Aetrix verify that BZG04-24TR is sourced from the original manufacturer or authorized distributors?
All BZG04-24TR 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 BZG04-24TR meets industry standards.
7.What is the process for return or replacement of BZG04-24TR?
All BZG04-24TR units undergo pre-shipment inspection (PSI). If there is an issue with BZG04-24TR, 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 BZG04-24TR part is unused and in its original packaging.
Return procedure for BZG04-24TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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