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STMicroelectronics BZW06-28RL
- Part No.:
- BZW06-28RL
- Manufacturer:
- STMicroelectronics
- Category:
- TVS Diodes
- Package:
- DO-204AC, DO-15, Axial
- Datasheet:
-
BZW06-28RL.pdf
- Description:
- TVS DIODE 28.2VWM 59VC DO15
- Quantity:
- Payment:
- Shipping:
Inventory:6,379
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Product details
Overview
BZW06-28RL from STMicroelectronics is a unidirectional 600 W transient voltage suppression diode in DO-15 package, designed for IEC 61000-4-2 ESD protection (30 kV air/contact) and IEC 61000-4-4 surge immunity (4 kV level 4). It features a 28 V stand-off voltage (VRM), 45.7 V clamping voltage at 13.1 A (10/1000 µs), and operates up to 175 °C junction temperature. It is used in AC/DC power supplies and industrial control inputs requiring robust overvoltage protection.
For engineers reviewing the BZW06-28RL datasheet, BZW06-28RL pinout, BZW06-28RL application, or BZW06-28RL equivalent, key selection criteria include clamping voltage at rated peak pulse current, dynamic resistance, leakage current at VRM, thermal derating above 25 °C, and DO-15 mechanical compatibility with high-density PCB layouts.
Technical Context
The BZW06-28RL employs planar silicon junction technology optimized for low leakage (<0.2 µA at 28 V) and stable clamping performance across –55 °C to +175 °C operating range. Its unidirectional polarity enables DC-side protection with cathode-anode orientation defined by DO-15 marking layout.
It delivers 600 W peak pulse power under 10/1000 µs waveform at 25 °C ambient, derating to 300 W at Tj = 175 °C per Figure 3. Dynamic resistance is 0.835 Ω (10/1000 µs) and 0.357 Ω (8/20 µs), enabling predictable voltage overshoot during fast transients.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Stand-off Voltage (VRM) | 28 V - Maximum continuous reverse working voltage before breakdown; defines minimum system operating margin. |
| Breakdown Voltage (VBR) | 31.4–34.8 V at 1 mA - Tight tolerance ensures consistent triggering across production lots. |
| Clamping Voltage (VCL) | 45.7 V at 13.1 A (10/1000 µs) - Limits downstream voltage stress during surge events. |
| Peak Pulse Power (PPP) | 600 W (10/1000 µs, Tamb = 25 °C) - Sustains energy-limited surges without failure. |
| Dynamic Resistance (RD) | 0.835 Ω (10/1000 µs) - Determines voltage rise per amp of surge current; critical for precision clamping. |
| Leakage Current (IRM) | ≤0.2 µA at VRM - Ensures minimal standby power loss and signal integrity in high-impedance circuits. |
| Junction Temperature Range | –55 °C to +175 °C - Supports operation in harsh environments including industrial motor drives and outdoor power converters. |
Pinout & Package
DO-15 (JEDEC DO-204AC) axial-leaded package with cathode band marking. Leads are matte tin-plated for solderability and RoHS compliance. Dimensions: A = 6.05–6.75 mm length, B = 26–31 mm overall length, D = 0.71–0.88 mm lead diameter.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction path | Connected to ground or low-impedance return in unidirectional TVS configuration. |
| Cathode | Reverse-biased protection node | Connected to protected line (e.g., AC input, DC rail); clamps when voltage exceeds VRM. |
Key Features
| Feature | Design Value |
|---|---|
| IEC 61000-4-2 ESD immunity | 30 kV contact/air discharge - Eliminates need for external ESD staging in Class 4-compliant designs. |
| High-temperature reliability | Rated for 175 °C junction operation - Enables placement near heat sources (e.g., rectifiers, transformers) without derating. |
| Low dynamic resistance | 0.357 Ω at 8/20 µs - Reduces clamping voltage overshoot during lightning-induced surges. |
| Planar junction construction | Stable leakage <0.2 µA at VRM - Preserves accuracy in sensor front-ends and low-power monitoring circuits. |
| UL 497B certified | QVGQ2.E136224 file number - Validates suitability for telecom/data line protection per UL safety standards. |
Applications
| AC/DC Power Supply Input Protection | Industrial PLC Digital Input Protection |
|---|---|
Use Scenario: Protects bridge rectifier inputs against line transients and induced surges in off-line SMPS. IC Role / Device Role / Timing Role: Unidirectional TVS placed between L/N and earth ground to clamp common-mode surges. Use Value: Clamps 45.7 V at 13.1 A (10/1000 µs), limiting stress on bridge diodes and bulk capacitor to safe levels. | Use Scenario: Shields 24 V digital input channels from field-wiring induced transients in factory automation systems. IC Role / Device Role / Timing Role: Series-connected TVS on input line, referenced to isolated logic ground. Use Value: Withstands 30 kV ESD per IEC 61000-4-2 and maintains <0.2 µA leakage to avoid false triggering. |
| Motor Drive Control Board Surge Suppression | Outdoor LED Driver Overvoltage Protection |
Use Scenario: Installed on gate driver supply rails to suppress switching noise and inductive kickback in IGBT modules. IC Role / Device Role / Timing Role: Localized clamping device adjacent to sensitive CMOS drivers. Use Value: 175 °C rating allows mounting directly on heatsink-adjacent PCB areas without thermal derating penalties. | Use Scenario: Safeguards constant-current LED driver ICs from lightning-induced surges on outdoor-rated 120/230 VAC inputs. IC Role / Device Role / Timing Role: Primary-level TVS on AC input before bridge rectifier. Use Value: 600 W peak power rating handles repetitive 10/1000 µs surges per IEC 61000-4-4 level 4 without degradation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar TVS diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ28A | DO-214AA package; 28 V VRM; 45.4 V VCL at 13.2 A; 600 W PPP; higher capacitance (~100 pF) | Suitable for surface-mount boards with space constraints; less suitable for axial-leaded legacy designs | Select when SMT assembly is required and board real estate is limited. |
| P6KE27A | DO-15 package; 27 V VRM; 43.5 V VCL at 13.8 A; 600 W PPP; older design with higher leakage (5 µA) | Compatible mechanical fit but lower ESD rating (25 kV) and reduced thermal margin (150 °C max) | Acceptable for cost-sensitive, non-safety-critical applications where 175 °C operation is not needed. |
Compared with SMBJ28A and P6KE27A, BZW06-28RL offers superior high-temperature capability (175 °C vs. 150 °C), lower leakage (0.2 µA vs. ≥5 µA), and full IEC 61000-4-2 level 4 compliance - making it preferred for industrial-grade power conversion and long-life embedded systems.
Availability
BZW06-28RL is available at Aetrix Electronics and suitable for AC/DC power supplies, industrial PLC inputs, and motor drive control boards requiring stable component supply and long-term lifecycle support.
Supply support for BZW06-28RL 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 diode product line, engineered specifically for robust surge and ESD protection in demanding industrial and power-conversion applications where thermal stability and long-term parametric consistency are critical.
FAQ
What is the maximum clamping voltage for BZW06-28RL under an 8/20 µs surge?
The clamping voltage is 59 V at 68 A for the 8/20 µs waveform, as specified in Table 2. This value reflects worst-case voltage seen by downstream circuitry during fast-rising lightning surges and is measured at 25 °C ambient with proper PCB copper area per Figure 12.
Is BZW06-28RL suitable for bidirectional signal line protection?
No - BZW06-28RL is unidirectional and intended for DC-biased lines like power rails or grounded inputs. For bidirectional AC or data lines, use the BZW06-28B variant, which has symmetrical clamping in both polarities and identical VRM/VCL ratings.
How does thermal derating affect its 600 W rating?
Per Figure 3, peak pulse power drops linearly from 600 W at 25 °C to 300 W at 175 °C junction temperature. Designers must calculate actual Tj using Rth(j-a), copper area, and pulse repetition rate to ensure sustained reliability under repeated surge conditions.
Does BZW06-28RL meet UL 497B for telecom surge protection?
Yes - it carries UL 497B certification under file number QVGQ2.E136224, confirming compliance with requirements for primary protector devices in telecommunications and data line applications, including impulse withstand and flammability (UL94 V0).
BZW06-28RL 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):
- 28.2V
- Voltage - Breakdown (Min):
- 31.4V
- Voltage - Clamping (Max) @ Ipp:
- 59V
- Current - Peak Pulse (10/1000µs):
- 68A (8/20µs)
- Power - Peak Pulse:
- 600W
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- 1000pF @ 1MHz
- Operating Temperature:
- -55°C ~ 175°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- DO-204AC (DO-15)
BZW06-28RL FAQ
1.How can I place an order for BZW06-28RL through Aetrix?
Please submit a Request for Quotation (RFQ) for BZW06-28RL 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 BZW06-28RL reliable?
The price and inventory of BZW06-28RL are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZW06-28RL is usually 5 days.
3.What payment methods are accepted for BZW06-28RL?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZW06-28RL transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZW06-28RL?
BZW06-28RL orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZW06-28RL 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 BZW06-28RL?
For technical support, including BZW06-28RL datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZW06-28RL requirements.
6.How does Aetrix verify that BZW06-28RL is sourced from the original manufacturer or authorized distributors?
All BZW06-28RL 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 BZW06-28RL meets industry standards.
7.What is the process for return or replacement of BZW06-28RL?
All BZW06-28RL units undergo pre-shipment inspection (PSI). If there is an issue with BZW06-28RL, 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 BZW06-28RL part is unused and in its original packaging.
Return procedure for BZW06-28RL:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZW06-28RL Tags
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Diodes Incorporated
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