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STMicroelectronics BZW06-40RL
- Part No.:
- BZW06-40RL
- Manufacturer:
- STMicroelectronics
- Category:
- TVS Diodes
- Package:
- DO-204AC, DO-15, Axial
- Datasheet:
-
BZW06-40RL.pdf
- Description:
- TVS DIODE 40.2VWM 84VC DO15
- Quantity:
- Payment:
- Shipping:
Inventory:3,282
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Product details
Overview
BZW06-40RL from STMicroelectronics is a unidirectional transient voltage suppression (TVS) diode in DO-15 package, designed for IEC 61000-4-2 ESD and IEC 61000-4-4 surge protection. It features 600 W peak pulse power (10/1000 µs), 40 V stand-off voltage (VRM), 64.6 V minimum breakdown voltage (VBR), and clamps to ≤92.0 V at 6.5 A (IPP). Used in AC/DC power supplies and industrial control interfaces where low leakage (<0.2 µA) and high junction temperature operation (up to +175 °C) are required.
For engineers reviewing the BZW06-40RL datasheet, BZW06-40RL pinout, BZW06-40RL application, or BZW06-40RL equivalent, key selection criteria include clamping voltage at rated surge current, dynamic resistance, junction capacitance under reverse bias, thermal impedance, and compliance with UL 497B and IEC 61000-4-2 level 4 (30 kV contact/air discharge).
Technical Context
This TVS diode employs planar silicon technology to achieve low leakage current (<0.2 µA at VRM ≥10 V) and stable performance across –55 °C to +175 °C junction temperature range. Its unidirectional configuration provides forward conduction path while suppressing transients on the protected line relative to ground.
The device meets IEC 61000-4-4 level 4 (4 kV) and exceeds IEC 61000-4-2 level 4 (30 kV air/contact discharge), with dynamic resistance (RD) of 3.17 Ω at 8/20 µs and 1.50 Ω at 10/1000 µs - enabling precise clamping behavior during fast- and slow-rising surges.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Stand-off Voltage (VRM) | 40 V - maximum continuous reverse operating voltage before significant leakage |
| Breakdown Voltage (VBR) | 64.6 V min at 1 mA - onset of avalanche conduction under controlled DC test |
| Clamping Voltage (VCL) | 92.0 V max at 6.5 A (10/1000 µs) - peak voltage seen by protected circuit during surge |
| Peak Pulse Power (PPP) | 600 W (10/1000 µs) - energy-handling capability for standard lightning-surge waveform |
| Dynamic Resistance (RD) | 3.17 Ω (8/20 µs), 1.50 Ω (10/1000 µs) - determines voltage rise per unit surge current |
| Junction Temperature Range | –55 °C to +175 °C - enables deployment in high-ambient industrial and automotive under-hood environments |
| Leakage Current (IRM) | ≤0.2 µA at VRM - ensures minimal loading on sensitive signal or bias lines |
Pinout & Package
DO-15 (JEDEC DO-204AC) axial-leaded package with matte tin-plated leads. Cathode indicated by band marking; anode is unmarked end. Compatible with wave and reflow soldering per J-STD-020 MSL level 1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry / Surge return path | Connected to protected line; conducts during positive transients when cathode is grounded |
| Cathode | Reference node / Ground reference | Typically tied to system ground; defines polarity and clamping reference point |
Key Features
| Feature | Design Value |
|---|---|
| High surge robustness | 600 W (10/1000 µs) and up to 4 kW (8/20 µs) - supports both lightning and EFT immunity testing |
| Low dynamic resistance | 1.50 Ω (10/1000 µs) - minimizes clamping voltage overshoot under high-current transients |
| High-temperature reliability | Rated Tj max = +175 °C - maintains parameter stability in thermally constrained enclosures |
| ESD immunity beyond level 4 | 30 kV contact/air discharge (IEC 61000-4-2) - protects against human-body-model events without degradation |
| UL 497B certification | File QVGQ2.E136224 - validates suitability for telecom/data-line primary protection per safety standards |
Applications
| Industrial PLC I/O Protection | AC/DC SMPS Input Stage |
|---|---|
Use Scenario: Protecting 24 V DC digital input channels in programmable logic controllers against induced surges from relay switching and field wiring. IC Role / Device Role / Timing Role: Unidirectional TVS placed between input terminal and ground to clamp negative-going transients and absorb 600 W surge energy. Use Value: Prevents microcontroller GPIO damage and false triggering by limiting clamped voltage to ≤92 V at 6.5 A, with <0.2 µA leakage preserving signal integrity. | Use Scenario: Safeguarding bridge rectifier inputs in offline switch-mode power supplies subjected to AC line surges and load dump events. IC Role / Device Role / Timing Role: Standoff-rated TVS connected across AC input lines to suppress common-mode transients before rectification. Use Value: Withstands 175 °C junction temperature and delivers 600 W pulse power, ensuring long-term reliability without derating in compact, thermally limited designs. |
| Telecom Line Interface | Motor Drive Control Board |
Use Scenario: Primary protection for RS-485 transceivers and Ethernet PHYs in outdoor base stations exposed to lightning-induced surges on data lines. IC Role / Device Role / Timing Role: UL 497B-certified unidirectional TVS used in conjunction with gas discharge tubes for staged protection. Use Value: Meets UL 497B (QVGQ2.E136224) and IEC 61000-4-4 level 4 (4 kV), enabling compliance with EN 61000-4-x for telecom infrastructure. | Use Scenario: Protecting gate driver supply rails and feedback sensing nodes in three-phase inverter boards from switching noise and cross-talk. IC Role / Device Role / Timing Role: Low-capacitance TVS placed across isolated DC-DC converter outputs to suppress fast-rising edge transients. Use Value: Junction capacitance <100 pF at 1 V (typ.) avoids signal distortion on high-speed analog feedback paths while maintaining 92 V clamping performance. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ40A | DO-214AA package; 600 W rating; slightly higher VBR (44.4 V min); RD = 1.25 Ω (10/1000 µs) | Surface-mount footprint; lower thermal resistance to PCB; better suited for automated assembly | Select when board space is constrained and reflow compatibility is prioritized over axial lead serviceability |
| P6KE40A | DO-15 package; same 40 V VRM; lower PPP (600 W); higher VCL (95.0 V at 6.3 A); RD = 1.75 Ω | Legacy design; wider VCL tolerance; less stringent ESD rating (IEC 61000-4-2 level 3 only) | Acceptable for cost-sensitive legacy replacements where 3 kV ESD margin suffices and 95 V clamping is acceptable |
Compared with SMBJ40A and P6KE40A, BZW06-40RL offers superior ESD robustness (30 kV vs. ≤20 kV), tighter clamping (92.0 V vs. ≥95 V), and UL 497B certification - making it preferred for new industrial and telecom designs requiring full IEC 61000-4-2/4-4 compliance.
Availability
BZW06-40RL is available at Aetrix Electronics and suitable for industrial PLC I/O protection, AC/DC SMPS input stages, and telecom line interface circuits requiring stable component supply, long-lifecycle support, and certified surge immunity.
Supply support for BZW06-40RL 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
STMicroelectronics is a global semiconductor leader headquartered in Geneva, Switzerland, delivering innovative solutions across automotive, industrial, power, and smart mobility markets.
The BZW06 series belongs to ST's high-reliability TVS portfolio, engineered specifically for robust front-end protection in harsh electromagnetic environments - emphasizing low leakage, high-temperature operation, and certified compliance with UL, IEC, and MIL standards.
FAQ
What is the maximum clamping voltage of BZW06-40RL at 6.5 A?
The maximum clamping voltage (VCL) is 92.0 V under 10/1000 µs waveform at 6.5 A peak pulse current, measured at Tamb = 25 °C. This value increases with junction temperature at a coefficient of 10.4 × 10⁻⁴/°C, reaching ~101 V at Tj = 125 °C per datasheet Equation 2.
Is BZW06-40RL RoHS-compliant and halogen-free?
Yes. BZW06-40RL is manufactured in ST's ECOPACK2-compliant DO-15 package, meeting RoHS Directive 2011/65/EU and EU REACH Regulation (SVHC-free). Halogen content is below 900 ppm chlorine and 900 ppm bromine per IEC 61249-2-21.
Can BZW06-40RL be used in bidirectional configurations?
No. BZW06-40RL is unidirectional only. For bidirectional protection at 40 V standoff, ST offers BZW06-40B - which shares identical electrical ratings but features symmetrical breakdown in both polarities and dual-band marking.
What is the thermal impedance junction-to-ambient for BZW06-40RL on FR4 PCB?
On standard FR4 (70 µm Cu, 1 cm² copper area per lead), Zth(j-a) is 45 °C/W for a 10 ms pulse (per Figure 11). With 2.5 cm² copper per lead, Rth(j-a) drops to ~2.2 °C/W (per Figure 12), enabling sustained 300 W dissipation at Tj = 175 °C.
BZW06-40RL Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Package/Case:
- DO-204AC, DO-15, Axial
- Series:
- BZW06, TRANSIL™
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 40.2V
- Voltage - Breakdown (Min):
- 44.7V
- Voltage - Clamping (Max) @ Ipp:
- 84V
- Current - Peak Pulse (10/1000µs):
- 48A (8/20µs)
- Power - Peak Pulse:
- 600W
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- 800pF @ 1MHz
- Operating Temperature:
- -55°C ~ 175°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- DO-204AC (DO-15)
BZW06-40RL FAQ
1.How can I place an order for BZW06-40RL through Aetrix?
Please submit a Request for Quotation (RFQ) for BZW06-40RL 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 BZW06-40RL reliable?
The price and inventory of BZW06-40RL are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZW06-40RL is usually 5 days.
3.What payment methods are accepted for BZW06-40RL?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZW06-40RL transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZW06-40RL?
BZW06-40RL orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZW06-40RL 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 BZW06-40RL?
For technical support, including BZW06-40RL datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZW06-40RL requirements.
6.How does Aetrix verify that BZW06-40RL is sourced from the original manufacturer or authorized distributors?
All BZW06-40RL 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 BZW06-40RL meets industry standards.
7.What is the process for return or replacement of BZW06-40RL?
All BZW06-40RL units undergo pre-shipment inspection (PSI). If there is an issue with BZW06-40RL, 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 BZW06-40RL part is unused and in its original packaging.
Return procedure for BZW06-40RL:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZW06-40RL Tags
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