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STMicroelectronics BZW06-33RL
- Part No.:
- BZW06-33RL
- Manufacturer:
- STMicroelectronics
- Category:
- TVS Diodes
- Package:
- DO-204AC, DO-15, Axial
- Datasheet:
-
BZW06-33RL.pdf
- Description:
- TVS DIODE 33.3VWM 69.7VC DO15
- Quantity:
- Payment:
- Shipping:
Inventory:3,580
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Product details
Overview
BZW06-33RL from STMicroelectronics is a unidirectional transient voltage suppression (TVS) diode in DO-15 package, designed for primary-level surge protection against IEC 61000-4-2 ESD (30 kV air/contact) and IEC 61000-4-4 EFT (4 kV level 4). It features a 33 V stand-off voltage (VRM), 53.9 V clamping voltage at 11.1 A (10/1000 µs), and 600 W peak pulse power rating. Used in AC/DC power supplies and industrial control inputs where low leakage (<0.2 µA) and high junction temperature operation (up to +175 °C) are required.
For engineers reviewing the BZW06-33RL datasheet, BZW06-33RL pinout, BZW06-33RL application, or BZW06-33RL equivalent, key selection criteria include clamping voltage margin relative to protected IC VDD, dynamic resistance (1.16 Ω), junction capacitance (<100 pF at 1 V), thermal derating above 25 °C, and DO-15 mechanical compatibility with legacy PCB footprints.
Technical Context
The BZW06-33RL operates as a silicon planar avalanche diode, triggered by reverse-biased breakdown when transient voltage exceeds its 33 V stand-off rating. Its unidirectional configuration provides forward conduction path only during positive surges on the cathode side, enabling asymmetric protection in DC rails.
It delivers 53.9 V clamping at 11.1 A (10/1000 µs) and 69.7 V at 57 A (8/20 µs), with dynamic resistance of 1.16 Ω - critical for limiting let-through energy into downstream circuitry. Junction temperature range spans –55 °C to +175 °C, supporting operation in high-ambient industrial environments without derating loss up to 125 °C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Stand-off Voltage (VRM) | 33 V - maximum continuous reverse operating voltage before breakdown; sets minimum system rail margin |
| Breakdown Voltage (VBR) | 37.1–41.1 V at 1 mA - defines precise avalanche onset; enables predictable clamping threshold |
| Clamping Voltage (VCL) | 53.9 V at 11.1 A (10/1000 µs) - peak voltage seen by protected circuit during surge |
| Peak Pulse Power (PPP) | 600 W (10/1000 µs) - maximum transient energy dissipation capability at 25 °C ambient |
| Dynamic Resistance (RD) | 1.16 Ω - determines voltage rise per ampere of surge current; lower value improves clamping linearity |
| Junction Capacitance | <100 pF at 1 V - minimal signal distortion in data lines; suitable for <1 MHz analog/sensor interfaces |
| Leakage Current (IRM) | 0.2 µA max at VRM - negligible standby power loss; avoids false triggering in high-impedance circuits |
Pinout & Package
DO-15 (JEDEC DO-204AC) axial-leaded package with matte tin-plated leads. Dimensions: A = 6.05–6.75 mm length, B = 26–31 mm body length, C = 2.95–3.53 mm diameter, D = 0.71–0.88 mm lead diameter. RoHS-compliant ECOPACK2 grade.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (lead) | Forward current entry / surge return path | Connected to ground or low-side reference; completes conduction loop during transient |
| Cathode (banded end) | Reverse-biased protection node | Connected to protected line (e.g., VIN); avalanche triggers when voltage exceeds VRM |
Key Features
| Feature | Design Value |
|---|---|
| High-temperature operation | Rated for continuous use up to +175 °C junction temperature - eliminates thermal derating in enclosed enclosures |
| Low dynamic resistance | 1.16 Ω enables tighter clamping control under high-current transients - reduces stress on downstream MOSFETs or regulators |
| ESD robustness | Withstands 30 kV contact/air discharge per IEC 61000-4-2 - meets Class 4 immunity without external shielding |
| Planar junction technology | Ensures stable leakage current (<0.2 µA) and repeatable VBR over lifetime - critical for long-life industrial deployments |
Applications
| Industrial AC/DC Power Input | Programmable Logic Controller (PLC) Digital Inputs |
|---|---|
Use Scenario: Protection of 24 V DC input terminals against induced lightning surges and switching transients in factory automation cabinets. IC Role / Device Role / Timing Role: Primary-level TVS clamp placed upstream of input filter and optocoupler isolation barrier. Use Value: Limits transient voltage to ≤53.9 V, preventing damage to 30 V-rated input buffer ICs and ensuring >100,000 surge cycles per device lifetime. | Use Scenario: Safeguarding 24 V digital input channels against field-wiring ESD events and back-EMF from relay coils. IC Role / Device Role / Timing Role: Unidirectional surge suppressor mounted directly at terminal block, referenced to common ground. Use Value: Sub-100 pF capacitance avoids signal edge degradation on 10 kHz polling inputs; 0.2 µA leakage prevents false logic state detection. |
| Medical Equipment Power Supply Ingress | Building Automation System (BAS) Sensor Interface |
Use Scenario: Surge protection on auxiliary 12–24 V power rails feeding patient-monitoring modules with isolated DC/DC converters. IC Role / Device Role / Timing Role: First-line transient absorber before bulk capacitor and EMI filter stage. Use Value: 600 W 10/1000 µs rating handles repeated 1 kV ring-wave surges per IEC 61000-4-5; UL 497B listing supports regulatory certification. | Use Scenario: Protecting 0–10 V analog sensor inputs (e.g., temperature, CO₂) from electrostatic discharge during field maintenance. IC Role / Device Role / Timing Role: Low-capacitance TVS placed adjacent to connector, minimizing trace inductance. Use Value: Clamps 30 kV ESD pulses to <55 V within nanoseconds - preserves 12-bit ADC accuracy and avoids latch-up in precision op-amps. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ33A | DO-214AA package; 33 V VRM; 53.3 V VCL at 11.8 A; 600 W rating; higher junction capacitance (~150 pF) | Suitable for SMT layouts; less compatible with through-hole legacy designs | Select when board space is constrained and reflow assembly is used |
| P6KE33A | DO-15 package; same VRM/VCL specs; lower PPP (600 W vs. BZW06's 600 W at 25 °C but de-rates faster above 85 °C) | Wider availability but lacks IEC 61000-4-2 level 4 validation and UL 497B listing | Select for cost-sensitive non-certified equipment where full compliance is not required |
Compared with SMBJ33A and P6KE33A, BZW06-33RL offers superior high-temperature stability (175 °C Tj max), verified 30 kV ESD performance, and UL 497B recognition - making it preferred for certified industrial and medical power ingress protection where reliability under thermal stress is critical.
Availability
BZW06-33RL is available at Aetrix Electronics and suitable for industrial AC/DC power inputs, PLC digital I/O modules, and medical auxiliary power supply ingress requiring stable component supply across multi-year production cycles.
Supply support for BZW06-33RL 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-reliability TVS portfolio, engineered specifically for robust front-end surge protection in harsh electromagnetic environments - emphasizing thermal resilience, low leakage, and compliance with IEC/UL safety standards.
FAQ
What is the maximum clamping voltage of BZW06-33RL under an 8/20 µs surge?
The BZW06-33RL clamps to 69.7 V at 57 A under an 8/20 µs waveform, as specified in Table 2 of DS0661 Rev 7. This value reflects worst-case let-through voltage during fast-rising transients like lightning-induced surges, and must be compared against the absolute maximum ratings of downstream components to ensure safe operation.
Is BZW06-33RL suitable for bidirectional signal line protection?
No - BZW06-33RL is unidirectional and intended for DC rail protection only. For bidirectional AC or data line protection, the BZW06-33B variant must be used. Using the unidirectional version on AC signals risks forward conduction and permanent failure during negative half-cycles.
How does junction temperature affect the breakdown voltage of BZW06-33RL?
VBR increases with junction temperature at a coefficient of +10 × 10⁻⁴ /°C (αT = 10 × 10⁻⁴ /°C). At 125 °C, VBR rises ~10% above its 25 °C value (37.1–41.1 V), reaching approximately 40.8–45.2 V. This positive TC ensures stable clamping behavior across operating temperature ranges.
Can BZW06-33RL replace P6KE33A in existing DO-15 footprints?
Yes - both share identical DO-15 mechanical dimensions and pinout, enabling direct drop-in replacement. However, BZW06-33RL offers higher thermal endurance (175 °C vs. 150 °C), lower leakage (0.2 µA vs. 1.0 µA), and certified IEC 61000-4-2/4-4 compliance - making it preferable for new designs targeting extended lifetime or regulatory approval.
BZW06-33RL 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):
- 33.3V
- Voltage - Breakdown (Min):
- 37.1V
- Voltage - Clamping (Max) @ Ipp:
- 69.7V
- Current - Peak Pulse (10/1000µs):
- 57A (8/20µs)
- Power - Peak Pulse:
- 600W
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- 900pF @ 1MHz
- Operating Temperature:
- -55°C ~ 175°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- DO-204AC (DO-15)
BZW06-33RL FAQ
1.How can I place an order for BZW06-33RL through Aetrix?
Please submit a Request for Quotation (RFQ) for BZW06-33RL 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 BZW06-33RL reliable?
The price and inventory of BZW06-33RL are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZW06-33RL is usually 5 days.
3.What payment methods are accepted for BZW06-33RL?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZW06-33RL transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZW06-33RL?
BZW06-33RL orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZW06-33RL 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 BZW06-33RL?
For technical support, including BZW06-33RL datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZW06-33RL requirements.
6.How does Aetrix verify that BZW06-33RL is sourced from the original manufacturer or authorized distributors?
All BZW06-33RL 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 BZW06-33RL meets industry standards.
7.What is the process for return or replacement of BZW06-33RL?
All BZW06-33RL units undergo pre-shipment inspection (PSI). If there is an issue with BZW06-33RL, 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 BZW06-33RL part is unused and in its original packaging.
Return procedure for BZW06-33RL:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZW06-33RL Tags
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