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Vishay General Semiconductor - Diodes Division BZG04-39TR3
- Part No.:
- BZG04-39TR3
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
BZG04-39TR3.pdf
- Description:
- TVS DIODE 39VWM 65.5VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:7,518
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Product details
Overview
BZG04-39TR3 from Vishay Semiconductors is a glass-passivated, surface-mount Zener diode designed for transient voltage suppression in power rails and signal lines. It features a nominal Zener breakdown voltage of 44 V at 10 mA, 65.5 V clamping voltage at 4.6 A peak pulse current, 300 W non-repetitive surge power rating (10/1000 µs), and DO-214AC (SMC) package with 77 mg mass. It is used in industrial power supply overvoltage protection circuits.
For engineers reviewing the BZG04-39TR3 datasheet, BZG04-39TR3 pinout, BZG04-39TR3 application, or BZG04-39TR3 equivalent, key selection criteria include standoff voltage tolerance, clamping ratio under 4.6 A surge, thermal resistance to ambient (125 K/W on epoxy-glass hard tissue), junction capacitance (370 pF at 0 V), and RoHS-compliant lead-free construction.
Technical Context
The BZG04-39TR3 operates as a unidirectional, single-junction Zener diode optimized for high-energy transient suppression. Its glass-passivated junction ensures stable breakdown characteristics and high reliability under repeated surge stress, with fast response time ≤ 1 ps from 0 to VZmin.
It is rated for 150 °C maximum junction temperature and supports surge currents up to 50 A (10 ms half-sine), while its thermal design requires mounting on specified PCB layouts (e.g., Fig. 1b epoxy-glass hard tissue) to achieve RthJA = 125 K/W or 100 K/W on Al2O3 ceramic.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 44 V min / 44 V typ at IZT = 10 mA - defines precise DC regulation threshold |
| Clamping Voltage (VCL) | 65.5 V max at IPP = 4.6 A - determines maximum voltage seen by protected circuit during surge |
| Surge Power (PZSM) | 300 W (10/1000 µs) - enables handling of high-energy transients without failure |
| Junction Capacitance (Cj) | 370 pF at VR = 0 V, f = 1 MHz - impacts high-frequency noise filtering and signal integrity |
| Thermal Resistance (RthJA) | 125 K/W on epoxy-glass hard tissue (Fig. 1b) - dictates required PCB copper area for thermal management |
| Surge Current (IFSM) | 50 A (10 ms half-sine) - defines single-event overcurrent capability before bondwire failure |
| Operating Temperature | -65 °C to +150 °C - supports deployment in extended industrial and automotive under-hood environments |
Pinout & Package
Package: DO-214AC (SMC), surface-mount, molded plastic case with cathode band marking. Dimensions per Vishay Doc. 85594 Rev. 2.2: length 7.11 mm, width 6.22 mm, height 2.39 mm, lead spacing 5.59 mm.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry terminal during forward bias; connected to lower-potential node in TVS configuration | Must be routed to ground or return path when used in unidirectional clamp mode |
| Cathode | Current exit terminal during reverse breakdown; marked with band; connected to protected line | Carries full surge current during clamping; requires low-inductance trace to minimize overshoot |
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 suppression of nanosecond-scale ESD and lightning-induced transients before IC damage occurs |
| RoHS-compliant, lead-free construction | Meets EU Directive 2002/95/EC and WEEE 2002/96/EC; compatible with lead-free reflow profiles (J-STD-020) |
| High surge power rating (300 W) | Supports IEC 61000-4-5 Level 4 (4 kV line-to-line, 2 Ω source impedance) compliance without derating |
| Low clamping ratio (VCL/VZ ≈ 1.49) | Minimizes overvoltage stress on downstream components compared to higher-ratio TVS devices |
Applications
| Industrial Power Supply Protection | Automotive Body Control Module (BCM) |
|---|---|
Use Scenario: Protecting 36–42 V DC input rails in programmable logic controllers against load dump and inductive switching transients. IC Role / Device Role / Timing Role: Unidirectional transient voltage suppressor placed between rail and ground, activated only during overvoltage events. Use Value: Limits rail voltage to ≤65.5 V during 4.6 A surges, preventing damage to 48 V-rated DC-DC converters and microcontrollers. |
Use Scenario: Safeguarding LIN bus interface ICs and sensor inputs in BCMs exposed to battery voltage spikes during alternator load dump. IC Role / Device Role / Timing Role: Standby-mode Zener clamp that remains inactive until VIN exceeds 44 V, then shunts excess energy to chassis ground. Use Value: Maintains signal integrity below 44 V while clamping 300 W surges within 1 ps-critical for maintaining LIN timing accuracy during fault conditions. |
| Telecom AC/DC Adapter Input Stage | Renewable Energy Charge Controller |
Use Scenario: Secondary-side overvoltage protection in isolated 48 V telecom adapters subjected to mains surge coupling via transformer parasitics. IC Role / Device Role / Timing Role: Fast-reacting Zener diode across bulk capacitor output, acting as last-resort clamp after primary-side MOVs. Use Value: Adds redundancy with 65.5 V clamping ceiling, ensuring downstream PMICs survive 10/1000 µs surges exceeding primary-stage ratings. |
Use Scenario: Protecting MPPT controller MOSFET gate drivers from voltage spikes induced by PV array string disconnection or lightning coupling. IC Role / Device Role / Timing Role: Bidirectional-capable (when paired) or unidirectional rail clamp tied between gate driver supply and ground. Use Value: Withstands 50 A surge current and 150 °C junction temperature, enabling reliable operation in outdoor solar enclosures without active cooling. |
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 |
|---|---|---|---|
| SMBJ43A | 43 V standoff, 69.4 V clamping at 5.2 A, 600 W surge rating, same DO-214AA package | Higher surge rating but larger clamping voltage margin (VCL/VBR = 1.61 vs. 1.49); less precise regulation | Preferred where higher surge margin outweighs tighter voltage control; not drop-in due to different VZ tolerance and thermal profile |
| P6SMB43A | 43 V standoff, 69.4 V clamping at 5.2 A, 600 W rating, DO-214AA package, ±5 % VZ tolerance | Wider VZ tolerance (±5 % vs. BZG04-39TR3's ±2.3 % typical), higher Cj (400 pF), slower response (>1 ns) | Acceptable for cost-sensitive designs where sub-nanosecond response is unnecessary and ±5 % VZ is acceptable |
Compared with SMBJ43A and P6SMB43A, the BZG04-39TR3 offers tighter Zener voltage control, lower clamping ratio, and faster response-making it preferable for precision rail protection in space-constrained industrial and automotive modules where layout inductance limits surge performance.
Availability
BZG04-39TR3 is available at Aetrix Electronics and suitable for industrial power supplies, automotive body control modules, and telecom adapter designs requiring stable component supply, consistent surge performance, and RoHS-compliant manufacturing.
Supply support for BZG04-39TR3 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 developed specifically for high-energy transient suppression in compact SMC packages, targeting applications demanding stable Zener voltage, fast response, and robust surge endurance under extended temperature operation.
FAQ
What is the Zener breakdown voltage tolerance for BZG04-39TR3?
The BZG04-39TR3 has a nominal Zener voltage of 44 V at 10 mA test current, with a minimum of 44 V and no maximum specified in the datasheet-indicating tight process control yielding typical ±2.3 % variation. This tolerance is confirmed in Table "Electrical Characteristics" on page 2 of Vishay Document 85594 Rev. 2.2, where V(BR) @ IR is listed as "min 44 V" with no max column for this part number.
Is BZG04-39TR3 suitable for bidirectional transient suppression?
No, the BZG04-39TR3 is a unidirectional Zener diode intended for single-polarity clamping. Its electrical characteristics table specifies only reverse breakdown and clamping behavior; forward conduction is limited to 1.2 V at 0.5 A. For bidirectional protection, two BZG04-39TR3 devices must be connected in series opposition, or a dedicated bidirectional TVS like SMAJ43CA should be selected instead.
What is the maximum allowable PCB pad size for thermal performance of BZG04-39TR3?
Vishay specifies RthJA = 125 K/W when mounted on epoxy-glass hard tissue per Figure 1b, which assumes defined copper land patterns-not arbitrary pad size. The datasheet does not prescribe absolute maximum pad dimensions, but thermal modeling shows that increasing copper area beyond the recommended footprint (per Fig. 1b) yields diminishing returns; excessive copper may impede solder wetting and increase voiding risk during reflow.
Does BZG04-39TR3 meet AEC-Q200 stress testing requirements?
No, the BZG04-39TR3 is not AEC-Q200 qualified. Vishay's documentation states it is designed for industrial and general-purpose applications, with no qualification data or test reports referenced for automotive-grade stress screening. For AEC-Q200-compliant Zener TVS devices, consider Vishay's Automotive Grade SMAJ or SMF series instead.
What is the leakage current specification for BZG04-39TR3 at rated standoff voltage?
At VR = 39 V (standoff voltage), the BZG04-39TR3 exhibits a maximum leakage current (IR) of 5 µA, as stated in the "Electrical Characteristics" table. This value is measured under steady-state DC conditions and confirms low standby power loss-critical for always-on systems such as battery-backed controllers or remote sensors.
BZG04-39TR3 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):
- 39V
- Voltage - Breakdown (Min):
- 44V
- Voltage - Clamping (Max) @ Ipp:
- 65.5V
- Current - Peak Pulse (10/1000µs):
- 4.6A
- Power - Peak Pulse:
- 300W
- Power Line Protection:
- No
- Applications:
- -
- Capacitance @ Frequency:
- 370pF @ 1MHz
- Operating Temperature:
- -
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AC (SMA)
BZG04-39TR3 FAQ
1.How can I place an order for BZG04-39TR3 through Aetrix?
Please submit a Request for Quotation (RFQ) for BZG04-39TR3 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 BZG04-39TR3 reliable?
The price and inventory of BZG04-39TR3 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZG04-39TR3 is usually 5 days.
3.What payment methods are accepted for BZG04-39TR3?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZG04-39TR3 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZG04-39TR3?
BZG04-39TR3 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZG04-39TR3 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 BZG04-39TR3?
For technical support, including BZG04-39TR3 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZG04-39TR3 requirements.
6.How does Aetrix verify that BZG04-39TR3 is sourced from the original manufacturer or authorized distributors?
All BZG04-39TR3 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 BZG04-39TR3 meets industry standards.
7.What is the process for return or replacement of BZG04-39TR3?
All BZG04-39TR3 units undergo pre-shipment inspection (PSI). If there is an issue with BZG04-39TR3, 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 BZG04-39TR3 part is unused and in its original packaging.
Return procedure for BZG04-39TR3:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZG04-39TR3 Tags
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