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STMicroelectronics BZW06-188RL
- Part No.:
- BZW06-188RL
- Manufacturer:
- STMicroelectronics
- Category:
- TVS Diodes
- Package:
- DO-204AC, DO-15, Axial
- Datasheet:
-
BZW06-188RL.pdf
- Description:
- TVS DIODE 188VWM 388VC DO15
- Quantity:
- Payment:
- Shipping:
Inventory:6,873
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Product details
Overview
BZW06-188RL from STMicroelectronics is a unidirectional transient voltage suppression (TVS) diode in DO-15 package, designed for high-energy surge protection in power supply and interface lines. It features a standoff voltage (VRM) of 188 V, clamping voltage (VCL) of 301 V at 10/1000 µs (IPP = 2.0 A), peak pulse power of 600 W, and operates up to 175 °C junction temperature - enabling robust ESD and EFT protection in industrial AC/DC adapters and telecom power rails.
For engineers reviewing the BZW06-188RL datasheet, BZW06-188RL pinout, BZW06-188RL application, or BZW06-188RL equivalent, key selection criteria include its 188 V reverse standoff rating, 301 V clamping performance at 2 A, low dynamic resistance (150 Ω), DO-15 mechanical compatibility, and compliance with IEC 61000-4-2 (30 kV contact/air) and IEC 61000-4-4 Level 4 (4 kV).
Technical Context
The BZW06-188RL uses planar silicon junction technology optimized for low leakage (<0.2 µA at VRM) and stable clamping over temperature (αT = 10 × 10⁻⁴ /°C). Its unidirectional configuration provides asymmetric conduction - forward-biased operation supports surge current handling up to 100 A (10 ms), while reverse-biased operation clamps transients above 188 V.
Thermal design is enabled by a maximum junction temperature of 175 °C and thermal resistance Rth(j-a) as low as 3.5 °C/W with 5 cm² copper area per lead. The device meets J-STD-020 MSL Level 1 and UL 497B (QVGQ2.E136224) for telecom surge protection applications.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Standoff Voltage (VRM) | 188 V - maximum continuous reverse operating voltage before clamping initiates |
| Clamping Voltage (VCL) | 301 V at 2.0 A (10/1000 µs) - limits transient voltage seen by downstream circuitry |
| Peak Pulse Power (PPP) | 600 W (10/1000 µs) - sustains short-duration surges without failure under standard test conditions |
| Junction Temperature Range | −55 °C to +175 °C - enables deployment in high-ambient environments like enclosed power supplies |
| ESD Withstand (IEC 61000-4-2) | 30 kV air/contact discharge - exceeds Level 4 for front-panel and connector protection |
| Dynamic Resistance (RD) | 150 Ω - determines voltage rise above VBR under surge current (ΔV = RD × IPP) |
| Leakage Current (IRM) | ≤0.2 µA at 188 V - minimizes standby power loss in high-impedance bias networks |
Pinout & Package
DO-15 (JEDEC DO-204AC) axial-leaded package with matte tin-plated leads. Cathode indicated by band marking; anode is unmarked end. Lead spacing 28.5 mm typical, body diameter 3.24 mm, overall length 6.40 mm.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal | Connected to lower-potential side of protected line; conducts surge current toward ground when reverse-biased |
| Cathode | Reverse-biased clamping terminal | Marked end; connected to higher-potential side (e.g., VIN rail); initiates avalanche breakdown above VRM |
Key Features
| Feature | Design Value |
|---|---|
| High-temperature reliability | Rated for continuous operation up to 175 °C junction temperature - suitable for thermally constrained SMPS designs |
| Low leakage current | ≤0.2 µA at 188 V - preserves signal integrity and reduces quiescent power in high-impedance circuits |
| Stable clamping over temperature | Temperature coefficient αT = 10 × 10⁻⁴ /°C - ensures predictable VCL shift across industrial temperature range |
| UL 497B certified | File QVGQ2.E136224 - validates suitability for primary-side surge protection in telecom and AC-powered equipment |
Applications
| Industrial AC/DC Power Adapters | Telecom Line Interface Protection |
|---|---|
|
Use Scenario: Protecting input rectifier stage against lightning-induced surges on 230 VAC mains-fed adapters. IC Role / Device Role / Timing Role: Unidirectional TVS placed between bridge rectifier output and bulk capacitor to clamp positive-going transients. Use Value: Clamps 600 W surges (10/1000 µs) at ≤301 V, preventing overvoltage stress on electrolytic capacitors and controller ICs. |
Use Scenario: Shielding RS-485 transceivers and isolation transformers from induced surges on outdoor telecom lines. IC Role / Device Role / Timing Role: Primary-side TVS on isolated DC feed line (e.g., 48 V phantom power) to absorb coupled EFT bursts. Use Value: Withstands 4 kV IEC 61000-4-4 fast transients and 30 kV ESD, maintaining signal integrity without latch-up or degradation. |
| Motor Drive DC Bus Protection | Industrial PLC Input Module |
|
Use Scenario: Safeguarding IGBT gate drivers and bus voltage sense circuits against switching-induced voltage spikes. IC Role / Device Role / Timing Role: TVS mounted across DC link capacitor terminals to suppress dV/dt spikes during inverter commutation. Use Value: 175 °C max junction rating allows placement near heat-generating power stages without derating. |
Use Scenario: Protecting 24 V digital input channels from field-wiring transients in factory automation cabinets. IC Role / Device Role / Timing Role: Series-connected TVS on each input channel, referenced to common ground, to shunt induced surges. Use Value: Low 0.2 µA leakage avoids false triggering of optocoupler-based input detection logic. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ188A | DO-214AA package; 188 V VRM; 301 V VCL @ 2.0 A; 600 W PPP; 1.5 pF capacitance | Surface-mount form factor requires PCB redesign; lower thermal mass limits sustained surge duty cycle | Select when space-constrained layouts or automated assembly mandate SMD packaging |
| P6KE188A | DO-15 package; 188 V VRM; 302 V VCL @ 2.0 A; 600 W PPP; 100 nA IR at VRM | Higher leakage (100 nA vs. 0.2 µA) and no UL 497B certification; older process with wider VBR tolerance | Acceptable for cost-sensitive, non-certified industrial controls where leakage is not critical |
Compared with SMBJ188A and P6KE188A, BZW06-188RL offers superior thermal endurance (175 °C Tj), UL 497B validation for telecom use, and tighter leakage control - making it preferred for high-reliability, thermally demanding, or safety-certified power systems.
Availability
BZW06-188RL is available at Aetrix Electronics and suitable for industrial AC/DC power adapters, telecom line interface protection, and motor drive DC bus protection requiring stable component supply and long-term lifecycle support.
Supply support for BZW06-188RL 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, specializing in power management, analog, MEMS, and microcontrollers for industrial, automotive, and consumer markets.
The BZW06 series belongs to ST's high-power TVS portfolio, engineered specifically for robust surge immunity in AC mains, telecom, and industrial power systems where reliability under extreme thermal and electrical stress is mandatory.
FAQ
What is the maximum surge current the BZW06-188RL can handle?
The BZW06-188RL supports a non-repetitive surge peak forward current (IFSM) of 100 A at 10 ms pulse width with initial junction temperature at 25 °C. This rating applies only to unidirectional conduction mode and assumes proper PCB thermal relief (≥5 cm² copper per lead) to maintain junction temperature below 175 °C.
Does BZW06-188RL meet IEC 61000-4-5 requirements?
No - BZW06-188RL is rated for IEC 61000-4-2 (ESD) and IEC 61000-4-4 (EFT) up to Level 4 (4 kV), but it is not characterized for IEC 61000-4-5 (surge immunity), which requires higher energy handling (e.g., 2 Ω source impedance, 1.2/50 µs voltage wave). For IEC 61000-4-5, consider higher-energy TVS arrays or hybrid protection solutions.
How does the clamping voltage change with temperature?
VCL increases linearly with junction temperature at a rate of αT = 10 × 10⁻⁴ /°C. At 125 °C, VCL rises ~1% above its 25 °C value (301 V → ~304 V at 2.0 A). This shift is fully specified in DS0661 Rev 7 and must be accounted for in worst-case overvoltage margin calculations.
Is the BZW06-188RL RoHS and REACH compliant?
Yes - BZW06-188RL is manufactured in ST's ECOPACK®-compliant facilities and meets RoHS Directive 2011/65/EU and REACH Regulation (EC) No. 1907/2006. It carries the "ECOPACK2" designation, indicating halogen-free and lead-free matte tin plating per JEDEC J-STD-020 MSL Level 1.
BZW06-188RL 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):
- 188V
- Voltage - Breakdown (Min):
- 209V
- Voltage - Clamping (Max) @ Ipp:
- 388V
- Current - Peak Pulse (10/1000µs):
- 10.3A (8/20µs)
- Power - Peak Pulse:
- 600W
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- 330pF @ 1MHz
- Operating Temperature:
- -55°C ~ 175°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- DO-204AC (DO-15)
BZW06-188RL FAQ
1.How can I place an order for BZW06-188RL through Aetrix?
Please submit a Request for Quotation (RFQ) for BZW06-188RL 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 BZW06-188RL reliable?
The price and inventory of BZW06-188RL are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZW06-188RL is usually 5 days.
3.What payment methods are accepted for BZW06-188RL?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZW06-188RL transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZW06-188RL?
BZW06-188RL orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZW06-188RL 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 BZW06-188RL?
For technical support, including BZW06-188RL datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZW06-188RL requirements.
6.How does Aetrix verify that BZW06-188RL is sourced from the original manufacturer or authorized distributors?
All BZW06-188RL 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 BZW06-188RL meets industry standards.
7.What is the process for return or replacement of BZW06-188RL?
All BZW06-188RL units undergo pre-shipment inspection (PSI). If there is an issue with BZW06-188RL, 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 BZW06-188RL part is unused and in its original packaging.
Return procedure for BZW06-188RL:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZW06-188RL Tags
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