My Inquiry
My Account
STMicroelectronics BZW06-376RL
- Part No.:
- BZW06-376RL
- Manufacturer:
- STMicroelectronics
- Category:
- TVS Diodes
- Package:
- DO-204AC, DO-15, Axial
- Datasheet:
-
BZW06-376RL.pdf
- Description:
- TVS DIODE 376VWM 776VC DO15
- Quantity:
- Payment:
- Shipping:
Inventory:1,059
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
BZW06-376RL from STMicroelectronics is a unidirectional transient voltage suppression (TVS) diode designed for high-energy surge protection in DC power lines and signal interfaces. It features a 376 V stand-off voltage (VRM), 603 V maximum clamping voltage (VCL) at 1 A IPP, 600 W peak pulse power (10/1000 µs), and operates up to 175 °C junction temperature-deployed in industrial power supplies and telecom line cards requiring robust IEC 61000-4-2/4-4 compliance.
For engineers reviewing the BZW06-376RL datasheet, BZW06-376RL pinout, BZW06-376RL application, or BZW06-376RL equivalent, key selection criteria include clamping voltage at rated surge current, leakage current below 0.2 µA at VRM, thermal stability at Tj = 175 °C, DO-15 mechanical compatibility, and bidirectional variant availability (BZW06-376BRL) for AC-coupled paths.
Technical Context
This planar-junction TVS diode uses silicon avalanche technology to clamp transient overvoltages via controlled reverse breakdown. Its low dynamic resistance (RD = 55.1 Ω at 8/20 µs) ensures rapid voltage limiting during fast transients like ESD (±30 kV air/contact) and EFT (4 kV level 4).
Designed for high-reliability operation in SMPS and telecom infrastructure, it maintains stable VBR (418–462 V) and VCL across -55 °C to +175 °C, with leakage current ≤0.2 µA at VRM and junction capacitance <1 pF at VR = 376 V-enabling minimal signal distortion in high-speed or high-voltage analog sensing paths.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Stand-off Voltage (VRM) | 376 V - Maximum continuous reverse operating voltage before clamping begins |
| Breakdown Voltage (VBR) | 418 V min / 440 V typ / 462 V max at 1 mA - Ensures precise turn-on threshold with ±5% tolerance |
| Clamping Voltage (VCL) | 603 V at 1 A (10/1000 µs) - Limits surge-induced voltage seen by downstream circuitry |
| Peak Pulse Power (PPP) | 600 W (10/1000 µs), 4 kW (8/20 µs) - Supports both slow and fast surge events per IEC standards |
| Junction Temperature Range | -55 °C to +175 °C - Enables deployment in under-hood automotive, industrial, and outdoor equipment |
| Leakage Current (IRM) | ≤0.2 µA at VRM - Minimizes standby power loss and avoids false triggering in high-impedance circuits |
| Dynamic Resistance (RD) | 55.1 Ω at 8/20 µs - Determines voltage overshoot during high-di/dt surges; lower RD improves clamping fidelity |
Pinout & Package
DO-15 (JEDEC DO-204AC) axial-leaded package with cathode band marking. Matte tin-plated leads compliant with J-STD-002 and MIL-STD-750 Method 2026.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (unmarked end) | Current entry terminal in forward bias | Connected to protected line side; conducts during positive surges when used in unidirectional configuration |
| Cathode (banded end) | Current exit terminal in forward bias; avalanche node in reverse | Connected to ground or return path; initiates clamping when reverse voltage exceeds VBR |
Key Features
| Feature | Design Value |
|---|---|
| High-temperature operation | Rated for continuous use at Tj = 175 °C-reduces derating needs in thermally constrained enclosures |
| Low leakage current | IRM ≤ 0.2 µA at VRM-preserves signal integrity in high-impedance sensor inputs and precision references |
| IEC 61000-4-2/4-4 compliance | Withstands ±30 kV ESD (air/contact) and 4 kV EFT-meets industrial and telecom immunity requirements out-of-box |
| Planar junction construction | Enables tight parameter distribution and stable VBR over lifetime-critical for long-life power supply designs |
Applications
| Industrial Power Supply Protection | Telecom Line Interface |
|---|---|
Use Scenario: DC input stage of DIN-rail mounted 48 V power converter exposed to lightning-induced surges on building wiring. IC Role / Device Role / Timing Role: Unidirectional TVS diode placed between +48 V rail and chassis ground to clamp transients before they reach primary-side controller ICs. Use Value: Clamps 600 W surges (10/1000 µs) to ≤603 V, protecting downstream MOSFETs and PWM controllers without sacrificing efficiency due to sub-µA leakage. | Use Scenario: Protection of RS-485 transceiver inputs in outdoor base station backhaul links subject to induced surges. IC Role / Device Role / Timing Role: Standoff-rated TVS on differential pair lines, referenced to local ground, absorbing common-mode transients before receiver front-end. Use Value: Sub-1 pF junction capacitance at 376 V ensures negligible signal rise-time degradation on 10 Mbps RS-485 buses while meeting IEC 61000-4-5 Level 3. |
| Automotive Body Control Module | Smart Grid Metering Interface |
Use Scenario: 12 V battery-supplied BCM module subjected to load dump and ISO 7637-2 pulses in engine bay environments. IC Role / Device Role / Timing Role: Primary overvoltage clamp on main power rail, coordinated with upstream fuse and downstream LDOs. Use Value: Stable VBR (418–462 V) and 175 °C rating allow reliable operation near hot engine components without thermal runaway or parameter drift. | Use Scenario: AC mains input protection in revenue-grade smart meters installed in utility substations with high lightning exposure. IC Role / Device Role / Timing Role: Secondary surge suppressor after MOV-based primary protection, handling residual fast transients on rectified DC bus. Use Value: 600 W (10/1000 µs) capability complements MOV energy absorption, while low RD (55.1 Ω) prevents voltage overshoot beyond MCU reset thresholds during surge decay. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ376A | Same VRM (376 V), but SMB package (surface-mount); lower PPP (600 W same, but derates faster above 25 °C) | Requires PCB rework for SMT layout; unsuitable for through-hole legacy designs or high-vibration environments | Select if board space is constrained and thermal management via copper pour is feasible |
| P6KE376A | Same DO-15 package and VRM, but older 600 W series; higher VCL (640 V) and RD (62 Ω) than BZW06-376RL | Less effective clamping margin for sensitive 3.3 V logic rails downstream; higher thermal impedance | Acceptable only where cost is critical and clamping voltage margin >40 V is available |
Compared with SMBJ376A and P6KE376A, BZW06-376RL delivers superior thermal stability (175 °C vs. 150 °C), tighter VBR tolerance (±5% vs. ±10%), and lower dynamic resistance-making it preferred for high-reliability, high-temperature, or precision-clamping applications where DO-15 mounting is required.
Availability
BZW06-376RL is available at Aetrix Electronics and suitable for industrial power supplies, telecom line interfaces, automotive body control modules, and smart grid metering systems requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for BZW06-376RL 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, and power management domains with vertical manufacturing capabilities and broad IP portfolio.
The BZW06 series belongs to ST's high-power TVS diode product line, engineered specifically for robust surge immunity in harsh-environment power conversion and communication infrastructure-emphasizing thermal resilience, low leakage, and IEC-compliant transient response.
FAQ
What is the maximum clamping voltage of BZW06-376RL at 1 A surge current?
The maximum clamping voltage (VCL) is 603 V under 10/1000 µs waveform conditions at 25 °C ambient. This value increases linearly with junction temperature at αT = 11 × 10⁻⁴/°C, reaching ~639 V at Tj = 125 °C per the datasheet's VCL vs. Tj formula.
Is BZW06-376RL suitable for bidirectional signal line protection?
No-BZW06-376RL is unidirectional. For bidirectional AC or differential signal protection, use the pin-compatible BZW06-376BRL variant, which provides symmetrical clamping in both polarities and identical VRM/VBR specifications.
How does the DO-15 package affect thermal performance in high-power surge events?
At 175 °C junction temperature, the DO-15 package supports up to 300 W (10/1000 µs) peak power-50% of its 25 °C rating-due to thermal impedance limitations. Effective PCB copper area (>3 cm² per lead) reduces Rth(j-a) to ~4.5 °C/W, enabling sustained operation within safe limits.
Does BZW06-376RL meet RoHS and REACH environmental compliance?
Yes-BZW06-376RL is manufactured in ST's ECOPACK2-compliant facilities, meeting RoHS Directive 2011/65/EU and REACH Regulation (EC) No. 1907/2006, with matte tin lead finish and halogen-free epoxy molding compound per DS0661 Rev 7.
BZW06-376RL 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):
- 376V
- Voltage - Breakdown (Min):
- 418V
- Voltage - Clamping (Max) @ Ipp:
- 776V
- Current - Peak Pulse (10/1000µs):
- 5.7A (8/20µs)
- Power - Peak Pulse:
- 600W
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- 350pF @ 1MHz
- Operating Temperature:
- -55°C ~ 175°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- DO-204AC (DO-15)
BZW06-376RL FAQ
1.How can I place an order for BZW06-376RL through Aetrix?
Please submit a Request for Quotation (RFQ) for BZW06-376RL 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 BZW06-376RL reliable?
The price and inventory of BZW06-376RL are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZW06-376RL is usually 5 days.
3.What payment methods are accepted for BZW06-376RL?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZW06-376RL transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZW06-376RL?
BZW06-376RL orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZW06-376RL 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 BZW06-376RL?
For technical support, including BZW06-376RL datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZW06-376RL requirements.
6.How does Aetrix verify that BZW06-376RL is sourced from the original manufacturer or authorized distributors?
All BZW06-376RL 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 BZW06-376RL meets industry standards.
7.What is the process for return or replacement of BZW06-376RL?
All BZW06-376RL units undergo pre-shipment inspection (PSI). If there is an issue with BZW06-376RL, 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 BZW06-376RL part is unused and in its original packaging.
Return procedure for BZW06-376RL:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZW06-376RL Tags
-
ESD9B5.0ST5G
onsemi
-
DESD3V3E1BL-7B
Diodes Incorporated
-
ESD5Z3.3T1G
onsemi
-
D5V0H1B2LP-7B
Diodes Incorporated
-
D5V0P1B2LP-7B
Diodes Incorporated
-
DESD5V0U1BA-7
Diodes Incorporated
-
ESD5Z5.0T1G
onsemi
-
DESD5V0U1BB-7
Diodes Incorporated
-
D12V0L1B2LP-7B
Diodes Incorporated
-
PESD2V0Y1BSFYL
Nexperia USA Inc.
-
DF2S5M4CT,L3F
Toshiba Semiconductor and Storage
-
D5V0L1B2WS-7
Diodes Incorporated
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
