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Vishay General Semiconductor - Diodes Division BZG05C39TR3
- Part No.:
- BZG05C39TR3
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- Single Zener Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
BZG05C39TR3.pdf
- Description:
- DIODE ZENER 39V 1.25W DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:7,341
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Product details
Overview
BZG05C39TR3 from Vishay Semiconductors is a unidirectional, single-junction Zener diode in DO-214AC (SMA) package, rated for 39 V nominal zener voltage at 6 mA test current, 50 Ω dynamic impedance, and 3000 mW peak power dissipation at 60 °C ambient with low thermal resistance (RthJL = 30 K/W). It delivers precise voltage regulation in automotive power rail clamping circuits.
For engineers reviewing the BZG05C39TR3 datasheet, BZG05C39TR3 pinout, BZG05C39TR3 application, or BZG05C39TR3 equivalent, key selection criteria include its AEC-Q101 qualification option (HE3 variant), 0.07 %/K zener voltage temperature coefficient, 30 V maximum reverse working voltage, and compatibility with wave/reflow soldering on standard 5 mm SMD footpads.
Technical Context
This device operates as a precision shunt regulator, maintaining stable reference voltage under varying load and line conditions via controlled reverse-biased avalanche breakdown. Its 39 V nominal zener voltage is specified at IZT = 6 mA with ±2 V tolerance (37–41 V range) and exhibits 50 Ω dynamic resistance at that current.
The DO-214AC package enables high-power handling (3000 mW at Tamb = 60 °C with RthJA < 30 K/W) and supports automotive-grade reliability with optional AEC-Q101 qualification. Junction temperature is limited to 150 °C, and storage range spans –65 °C to +150 °C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 37–41 V range at 6 mA test current - defines stable regulation window for 3.3 V tolerant control ICs in 42 V automotive systems |
| Power Dissipation (Ptot) | 3000 mW at Tamb = 60 °C with RthJA < 30 K/W - enables robust transient suppression without heatsink in compact layouts |
| Dynamic Resistance (ZZ) | 50 Ω at IZT = 6 mA - ensures minimal output voltage shift under load variation in feedback loops |
| Temperature Coefficient (TCVZ) | +0.07 %/K - provides predictable, positive drift for compensation in temperature-critical bias networks |
| Reverse Leakage (IR) | ≤0.5 μA at VR = 30 V - guarantees negligible standby current in always-on vehicle modules |
| Junction-to-Lead Thermal Resistance | 30 K/W - allows direct thermal coupling to PCB copper pour for sustained surge handling |
Pinout & Package
DO-214AC (SMA) surface-mount package: 4.5 mm × 2.8 mm body, 2.3 mm lead width, 3.3 mm lead spacing, 6.7 mm overall length; molded UL 94 V-0 compound, MSL level 1, compatible with 260 °C/10 s reflow profile.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (marked end) | High-impedance reference node | Connected to regulated voltage rail; reverse-biased operation requires cathode at higher potential than anode |
| Anode | Reference ground return path | Serves as current sink to system ground or low-side switch node; must handle full zener current during clamping |
Key Features
| Feature | Design Value |
|---|---|
| Unidirectional Zener operation | Enables dedicated overvoltage clamping on positive rails without bidirectional leakage concerns |
| AEC-Q101 qualification option (HE3) | Validated for automotive powertrain and chassis applications requiring zero-failure reliability over 15-year service life |
| Wave and reflow solderable | Eliminates manual assembly steps; supports high-volume automated PCB assembly with standard SMT processes |
| Single-junction construction | Delivers tight VZ tolerance and predictable TCVZ vs. multi-junction alternatives used in wide-voltage-range regulators |
| UL 94 V-0 molding compound | Meets flammability requirements for under-hood electronics and battery management enclosures |
Applications
| Automotive Load Dump Protection | Industrial PLC Analog Input Protection |
|---|---|
Use Scenario: Suppresses 120 V transients induced by alternator load dump in 12 V/42 V dual-battery vehicles. IC Role / Device Role / Timing Role: Shunt clamping element placed across DC-DC converter input to limit voltage excursion below 45 V. Use Value: Withstands 60 W non-repetitive surge (tp = 100 μs) and maintains regulation within 37–41 V window during event. |
Use Scenario: Guards 24 V industrial analog input channels against field-wiring faults and ESD events. IC Role / Device Role / Timing Role: Front-end voltage limiter before precision op-amp buffer stage in 4–20 mA receiver circuit. Use Value: 0.5 μA leakage at 30 V ensures ≤12.5 nA error contribution to 20 mA full-scale current loop. |
| Telecom Power Supply Reference | Medical Equipment Overvoltage Clamp |
Use Scenario: Provides stable 39 V reference for isolated flyback controller feedback network in PoE-powered infrastructure gear. IC Role / Device Role / Timing Role: Precision voltage reference node tied to optocoupler LED anode in secondary-side regulation loop. Use Value: +0.07 %/K TCVZ allows predictable drift compensation when paired with NTC thermistor in reference divider. |
Use Scenario: Clamps auxiliary 36 V logic supply in portable diagnostic devices during ESD discharge events per IEC 61000-4-2 Level 4. IC Role / Device Role / Timing Role: Fast-response shunt protector placed directly at LDO input to prevent downstream IC damage. Use Value: 50 Ω dynamic impedance ensures clamp voltage stays within 39 ±0.5 V during 8 kV contact discharge. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N5377BRLG | 39 V nominal, 5 W rating, DO-201AD package (larger footprint, RthJA ≈ 50 K/W) | Higher power margin but incompatible with space-constrained SMD layouts; not AEC-Q101 qualified | Select when board area permits larger through-hole or axial-leaded replacement and automotive qualification is not required. |
| BZX84-C39LT1G | 39 V nominal, 300 mW rating, SOT-23 package (RthJA ≈ 300 K/W, 10× lower power capability) | Limited to low-current signal-level protection; unsuitable for power rail clamping above 10 mA | Choose only for cost-sensitive, low-power bias networks where 3000 mW surge handling is unnecessary. |
Compared with 1N5377BRLG and BZX84-C39LT1G, the BZG05C39TR3 uniquely balances 3000 mW power handling, DO-214AC SMD compatibility, and AEC-Q101 availability-making it the sole option for automotive-grade, high-energy transient suppression in compact PCB designs.
Availability
BZG05C39TR3 is available at Aetrix Electronics and suitable for automotive load dump protection, industrial PLC analog input protection, and telecom power supply reference applications requiring stable component supply across extended production lifecycles.
Supply support for BZG05C39TR3 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 Intertechnology is a global semiconductor manufacturer specializing in discrete components, sensors, and passive elements with emphasis on reliability, power handling, and automotive qualification.
The BZG05C-Series is designed for high-stability voltage regulation and transient suppression in harsh-environment applications including automotive power systems, industrial controls, and telecom infrastructure.
FAQ
What is the zener voltage tolerance of BZG05C39TR3 at 6 mA test current?
The BZG05C39TR3 has a zener voltage range of 37 V to 41 V at IZT = 6 mA, corresponding to a ±2 V absolute tolerance. This specification is measured under standard conditions (Tamb = 25 °C) and reflects the device's guaranteed regulation window for precision clamping applications. The BZG05C39TR3 maintains this tolerance across its qualified operating temperature range.
Is BZG05C39TR3 qualified for automotive applications?
The BZG05C39TR3 itself is the commercial-grade (E3) variant and is not AEC-Q101 qualified. However, the identical device in HE3 packaging (BZG05C39HE3TR3) carries full AEC-Q101 qualification. Engineers selecting BZG05C39TR3 for automotive use must verify whether their design accepts commercial-grade reliability or requires the HE3 version - both share identical electrical specs and DO-214AC mechanical form.
What is the maximum non-repetitive surge power the BZG05C39TR3 can withstand?
The BZG05C39TR3 is rated for 60 W non-repetitive peak surge power dissipation (PZSM) under a 100 μs square pulse at Tj = 25 °C prior to surge. This capability enables reliable suppression of ISO 7637-2 Pulse 5a load dump transients in 12 V automotive systems. Derating applies for longer pulses or elevated junction temperatures, per Figure 4 in the official Vishay datasheet.
Does BZG05C39TR3 support automated PCB assembly processes?
Yes, the BZG05C39TR3 is fully compatible with both wave and reflow soldering processes. Its DO-214AC package meets J-STD-020 MSL level 1 requirements and is rated for 260 °C/10 s at terminals. The device ships in 6000-unit reels (13″) and is optimized for pick-and-place placement accuracy with defined footprint dimensions per Vishay document S8-V-3848.01-003.
How does the temperature coefficient affect BZG05C39TR3 performance in wide-temperature environments?
The BZG05C39TR3 has a nominal temperature coefficient of +0.07 %/K, meaning its zener voltage increases by approximately 27.3 mV per °C rise above 25 °C. This positive drift is stable and repeatable, enabling predictable compensation in temperature-critical references. At +125 °C, the VZ shift remains within ±1.5 V of nominal - well within the 37–41 V specification band.
BZG05C39TR3 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Series:
- -
- Package/Case:
- DO-214AC, SMA
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- Voltage - Zener (Nom) (Vz):
- 39 V
- Tolerance:
- -
- Power - Max:
- 1.25 W
- Impedance (Max) (Zzt):
- 1000 Ohms
- Current - Reverse Leakage @ Vr:
- 500 nA @ 30 V
- Voltage - Forward (Vf) (Max) @ If:
- 1.2 V @ 200 mA
- Operating Temperature:
- -65°C ~ 150°C
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AC (SMA)
BZG05C39TR3 FAQ
1.How can I place an order for BZG05C39TR3 through Aetrix?
Please submit a Request for Quotation (RFQ) for BZG05C39TR3 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 BZG05C39TR3 reliable?
The price and inventory of BZG05C39TR3 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZG05C39TR3 is usually 5 days.
3.What payment methods are accepted for BZG05C39TR3?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZG05C39TR3 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZG05C39TR3?
BZG05C39TR3 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZG05C39TR3 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 BZG05C39TR3?
For technical support, including BZG05C39TR3 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZG05C39TR3 requirements.
6.How does Aetrix verify that BZG05C39TR3 is sourced from the original manufacturer or authorized distributors?
All BZG05C39TR3 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 BZG05C39TR3 meets industry standards.
7.What is the process for return or replacement of BZG05C39TR3?
All BZG05C39TR3 units undergo pre-shipment inspection (PSI). If there is an issue with BZG05C39TR3, 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 BZG05C39TR3 part is unused and in its original packaging.
Return procedure for BZG05C39TR3:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZG05C39TR3 Tags
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