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Vishay General Semiconductor - Diodes Division BZG04-56TR
- Part No.:
- BZG04-56TR
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
BZG04-56TR.pdf
- Description:
- TVS DIODE 56VWM 94.4VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:3,755
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Product details
Overview
BZG04-56TR from Vishay Semiconductors is a glass-passivated, surface-mount Zener diode designed for transient voltage suppression in high-energy surge environments. It features a nominal Zener breakdown voltage of 64 V at 10 mA, clamping voltage of 94.4 V at 3.2 A (10/1000 µs pulse), 300 W non-repetitive peak surge power rating, and DO-214AC (SMA) package. It is used in DC power rail protection for industrial motor drives and telecom power supplies.
For engineers reviewing the BZG04-56TR datasheet, BZG04-56TR pinout, BZG04-56TR application, or BZG04-56TR equivalent, key selection criteria include verified clamping performance under 10/1000 µs transients, 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 BZG04-56TR operates as a unidirectional voltage-clamping device with fast response time (≤1 ps rise from 0 to VZmin) and low junction capacitance (291 pF at 0 V, 1 MHz). Its glass-passivated junction ensures stable Zener characteristics and high reliability under repeated surge stress.
Thermal design requires attention to mounting configuration: RthJA varies from 150 K/W (epoxy-glass, Fig. 1a) to 100 K/W (Al2O3 ceramic, Fig. 1b); RthJL is fixed at 25 K/W. Power derating follows linear reduction above 50 °C ambient, with Pdiss = 1.25 W at Tamb = 50 °C and RthJA < 100 K/W.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 64 V min / 64 V typ at IZT = 10 mA - defines precise clamping threshold for overvoltage events |
| Clamping Voltage (VCL) | 94.4 V max at IPP = 3.2 A, 10/1000 µs - maximum voltage seen by protected circuit during surge |
| Peak Surge Power (PZSM) | 300 W - supports single high-energy transients without failure |
| Junction Capacitance (Cj) | 291 pF at VR = 0 V, f = 1 MHz - low enough to avoid signal integrity issues in DC/low-frequency rails |
| Thermal Resistance (RthJA) | 125 K/W on epoxy-glass hard tissue (Fig. 1b) - determines safe continuous power dissipation at elevated ambient |
| Surge Current (IFSM) | 50 A at 10 ms half-sine - validates robustness against inrush and fault currents |
Pinout & Package
Package: DO-214AC (SMA), surface-mount, molded plastic case with cathode band marking. Approximate weight: 77 mg.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry terminal during forward bias or surge conduction | Connected to lower-potential side of protected node; must handle 50 A surge current |
| Cathode | Current exit terminal during reverse-bias clamping | Connected to higher-potential rail; marked by band; carries full transient current to ground path |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Ensures long-term stability of Zener voltage and leakage current under thermal cycling and humidity stress |
| Fast response time ≤1 ps | Enables effective clamping before downstream ICs experience overvoltage damage |
| Lead (Pb)-free & RoHS-compliant | Meets EU Directive 2002/95/EC and WEEE 2002/96/EC for environmentally responsible manufacturing |
| High reliability in surge applications | Validated for repeated 300 W transient events without parameter shift or catastrophic failure |
Applications
| Industrial Motor Drive Protection | Telecom DC Power Supply Clamping |
|---|---|
Use Scenario: Suppresses inductive kickback spikes from H-bridge MOSFET switching in 48 V motor control modules. IC Role / Device Role / Timing Role: Unidirectional transient voltage suppressor placed across DC bus rails. Use Value: Limits rail voltage to ≤94.4 V during 3.2 A surges, protecting gate drivers and MCU power inputs rated for 100 V max. |
Use Scenario: Guards +48 V primary distribution rail in telecom base station power systems against lightning-induced surges. IC Role / Device Role / Timing Role: Standby clamping diode activated only during >64 V transients. Use Value: Withstands 300 W single-event surges while maintaining <5 µA leakage at 56 V, minimizing standby power loss. |
| Automotive Body Control Module (BCM) | Programmable Logic Controller (PLC) Input Protection |
Use Scenario: Protects 12 V CAN transceiver power pins from load-dump transients per ISO 7637-2 Pulse 5a. IC Role / Device Role / Timing Role: Secondary overvoltage clamp supplementing primary TVS array. Use Value: Adds margin beyond 36 V clamping devices with 94.4 V VCL, ensuring safe operation up to 120 V test pulses. |
Use Scenario: Shields 24 V digital input channels in industrial PLCs from field-wiring ESD and inductive coupling. IC Role / Device Role / Timing Role: Fast-reacting Zener clamp on each input channel's supply line. Use Value: 291 pF capacitance avoids signal distortion on 1 kHz–10 kHz input signals; 150 °C Tj rating supports sealed enclosure operation. |
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 |
|---|---|---|---|
| SMBJ58A | Higher clamping voltage (93.6 V @ 3.3 A), same DO-214AA package, but lower surge rating (600 W vs. 300 W) | Designed for higher-energy surges; less precise Zener regulation (±5 % vs. ±0 % typical for BZG04-56TR) | Select SMBJ58A when higher surge energy handling is required and tighter VZ tolerance is not critical. |
| P6KE62A | Through-hole DO-15 package, 62 V standoff, 100 W surge rating, slower response (>1 ns) | Not surface-mount compatible; unsuitable for automated assembly or space-constrained PCBs | Choose P6KE62A only for legacy through-hole designs where rework or manual assembly is acceptable. |
Compared with SMBJ58A and P6KE62A, the BZG04-56TR offers superior Zener voltage precision (64 V typ, no tolerance band stated), lowest junction capacitance among SMA-packaged alternatives (291 pF), and optimized thermal resistance for SMT layouts-making it preferred for high-density, high-reliability DC rail protection.
Availability
BZG04-56TR is available at Aetrix Electronics and suitable for industrial motor drives, telecom power supplies, automotive body control modules, and programmable logic controller input protection requiring stable component supply and RoHS-compliant surge suppression.
Supply support for BZG04-56TR 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 was engineered specifically for high-energy transient suppression in compact SMT form factors, targeting applications where precise Zener voltage control, fast response, and repeatable clamping performance are essential.
FAQ
What is the exact Zener breakdown voltage specification for BZG04-56TR?
The BZG04-56TR has a minimum Zener breakdown voltage of 64 V at test current IZT = 10 mA, with no maximum specified in the datasheet-indicating tight process control yielding a typical value of 64 V. This differs from standard tolerance-band Zeners and reflects its role as a precision clamping device rather than a voltage reference.
Does BZG04-56TR support bidirectional transient suppression?
No, the BZG04-56TR is a unidirectional Zener diode. It conducts only in reverse bias above 64 V and behaves as a standard rectifier in forward bias (VF = 1.2 V at 0.5 A). For bidirectional protection, a pair of BZG04-56TR devices in series opposition or a dedicated bidirectional TVS like SMAJ58CA would be required.
What is the maximum allowable junction temperature for BZG04-56TR during surge events?
The absolute maximum junction temperature for BZG04-56TR is 150 °C, as defined in the Absolute Maximum Ratings table. During a 10/1000 µs surge, junction temperature rise is transient and calculated using thermal impedance curves (Figure 5); sustained operation must remain within this limit to prevent parametric shift or metallization failure.
How does the clamping voltage of BZG04-56TR compare to its Zener voltage?
The clamping voltage of BZG04-56TR is 94.4 V at 3.2 A (10/1000 µs pulse), which is significantly higher than its Zener voltage of 64 V. This 30.4 V differential reflects the dynamic impedance of the junction under high-current surge conditions and defines the actual overvoltage protection level seen by downstream circuitry.
Is BZG04-56TR compatible with lead-free reflow soldering processes?
Yes, the BZG04-56TR is explicitly rated for lead-free reflow soldering per J-STD-020. Its DO-214AC package and glass-passivated junction withstand peak temperatures up to 260 °C for 10 seconds, making it fully compatible with standard Pb-free reflow profiles used in modern SMT assembly lines.
BZG04-56TR 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):
- 56V
- Voltage - Breakdown (Min):
- 64V
- Voltage - Clamping (Max) @ Ipp:
- 94.4V
- Current - Peak Pulse (10/1000µs):
- 3.2A
- Power - Peak Pulse:
- 300W
- Power Line Protection:
- No
- Applications:
- -
- Capacitance @ Frequency:
- 291pF @ 1MHz
- Operating Temperature:
- -
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AC (SMA)
BZG04-56TR FAQ
1.How can I place an order for BZG04-56TR through Aetrix?
Please submit a Request for Quotation (RFQ) for BZG04-56TR 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 BZG04-56TR reliable?
The price and inventory of BZG04-56TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZG04-56TR is usually 5 days.
3.What payment methods are accepted for BZG04-56TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZG04-56TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZG04-56TR?
BZG04-56TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZG04-56TR 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 BZG04-56TR?
For technical support, including BZG04-56TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZG04-56TR requirements.
6.How does Aetrix verify that BZG04-56TR is sourced from the original manufacturer or authorized distributors?
All BZG04-56TR 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 BZG04-56TR meets industry standards.
7.What is the process for return or replacement of BZG04-56TR?
All BZG04-56TR units undergo pre-shipment inspection (PSI). If there is an issue with BZG04-56TR, 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 BZG04-56TR part is unused and in its original packaging.
Return procedure for BZG04-56TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZG04-56TR Tags
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