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Vishay General Semiconductor - Diodes Division BZW04P20HE3/54
- Part No.:
- BZW04P20HE3/54
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-204AL, DO-41, Axial
- Datasheet:
-
BZW04P20HE3/54.pdf
- Description:
- TVS DIODE 20.5VWM 33.2VC DO204AL
- Quantity:
- Payment:
- Shipping:
Inventory:6,353
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Product details
Overview
BZW04P20HE3/54 from Vishay General Semiconductor is a bi-directional TransZorb® transient voltage suppressor (TVS) diode in DO-204AL (DO-41) package, designed for clamping ESD and surge transients on signal/power lines. It features 400 W peak pulse power (10/1000 µs), 20.5 V stand-off voltage (VWM), 33.2 V maximum clamping voltage (VC) at 12.0 A IPPM, and AEC-Q101 qualification for automotive electronics protection.
For engineers reviewing the BZW04P20HE3/54 datasheet, BZW04P20HE3/54 pinout, BZW04P20HE3/54 application, or BZW04P20HE3/54 equivalent, key selection criteria include its bi-directional clamping capability, low leakage (<1 µA at VWM), temperature coefficient of breakdown voltage (0.094 %/°C), and RoHS-compliant, whisker-tested (JESD201 Class 2) matte tin leads.
Technical Context
This device operates as a voltage-clamped shunt protector with symmetrical breakdown behavior in both polarities, enabling robust protection of AC-coupled or floating signal paths. Its glass-passivated junction ensures stable avalanche characteristics and fast response time (<1 ns), while the 10/1000 µs waveform rating reflects standardized surge immunity testing per ANSI/IEEE C62.35.
The BZW04P20HE3/54 is rated for 175 °C maximum junction temperature and derates linearly above 25 °C ambient, with 1.5 W steady-state power dissipation on infinite heatsink at TL = 75 °C. Its bi-directional configuration eliminates polarity marking and supports use in unidirectional or bidirectional data/supply rails without orientation constraints.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 20.5 V - Maximum continuous reverse working voltage before clamping begins; defines safe operating margin below breakdown. |
| VBR min/max | 22.8 V / 26.4 V at 1 mA - Verified avalanche breakdown range; ensures consistent turn-on across production lots. |
| VC @ IPPM | 33.2 V at 12.0 A - Clamping voltage under 10/1000 µs surge; limits downstream voltage stress during transient events. |
| PPPM | 400 W - Peak pulse power handling capacity; supports IEC 61000-4-5 Level 4 (4 kV) surge compliance when properly laid out. |
| ID @ VWM | <1 µA - Reverse leakage current at stand-off voltage; minimizes quiescent power loss in battery-powered systems. |
| TJ max | +175 °C - Maximum junction temperature; enables operation in under-hood automotive environments. |
| AEC-Q101 | Qualified - Validated for automotive-grade reliability including HTOL, temperature cycling, and ESD (HBM ≥8 kV). |
Pinout & Package
Package: DO-204AL (DO-41), axial lead, molded epoxy case meeting UL 94 V-0. Matte tin-plated leads comply with J-STD-002/JESD22-B102 solderability and JESD201 Class 2 whisker resistance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (bi-directional) | Surge current path | No polarity marking; terminals are functionally identical - either lead serves as input/output for transient energy diversion. |
Key Features
| Feature | Design Value |
|---|---|
| Bi-directional clamping | Enables single-device protection of AC signals, differential buses (e.g., RS-485), or floating power domains without polarity concerns. |
| 400 W peak pulse power | Withstands repetitive 10/1000 µs surges up to 0.01% duty cycle - sufficient for automotive load-dump and ISO 7637-2 pulse 1/2/5a mitigation. |
| Glass passivated junction | Ensures stable, low-drift avalanche characteristics over lifetime and temperature; critical for long-term clamping consistency. |
| AEC-Q101 qualification | Validated for automotive applications including engine control units, body electronics, and ADAS sensor interfaces. |
| RoHS & WEEE compliant | Meets EU environmental directives; HE3 suffix confirms AEC-Q101 grade and JESD201 Class 2 whisker resistance for high-reliability assembly. |
Applications
| Automotive Sensor Interface | Industrial RS-485 Bus |
|---|---|
Use Scenario: Protecting CAN/LIN transceiver inputs and analog sensor outputs (e.g., pressure, temperature) from ISO 7637-2 coupled transients in vehicle harnesses. IC Role / Device Role / Timing Role: Shunt-type transient suppressor placed directly at connector entry point to clamp induced spikes before reaching sensitive IC pins. Use Value: Limits voltage excursion to ≤33.2 V during 12.0 A surge, preserving signal integrity and preventing latch-up in 5 V/3.3 V interface ICs. |
Use Scenario: Safeguarding half-duplex RS-485 transceivers (e.g., MAX1487, SN65HVD72) against EFT bursts and lightning-induced surges on factory floor cabling. IC Role / Device Role / Timing Role: Bi-directional TVS on A/B differential pair and common-mode line to suppress common- and differential-mode transients simultaneously. Use Value: Maintains <1 µA leakage at 20.5 V VWM, avoiding bus bias shift; clamps within nanoseconds to preserve signal edge fidelity at up to 20 Mbps. |
| Consumer Power Adapter Input | Medical Equipment Signal Line |
Use Scenario: Secondary-side overvoltage suppression on 24 V DC output rails of wall-mounted power adapters subjected to EN 61000-4-5 surges. IC Role / Device Role / Timing Role: Standoff-rated protector placed after DC-DC converter output filter to absorb residual transients escaping primary-side MOVs. Use Value: 20.5 V VWM aligns with 24 V nominal rail; 33.2 V VC ensures downstream regulators (e.g., LDOs) remain within absolute maximum ratings. |
Use Scenario: ESD protection for analog front-end inputs (ECG, EEG) where low capacitance and minimal leakage are mandatory per IEC 60601-1-2. IC Role / Device Role / Timing Role: Low-leakage bi-directional clamp on isolated sensor signal paths to prevent patient-connected circuit damage during handling discharge. Use Value: Sub-µA leakage preserves microvolt-level signal accuracy; AEC-Q101 qualification indicates proven process stability for medical-grade traceability. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ20CA | Same DO-214AA package; 20 V VWM, 32.4 V VC @ 12.3 A; lower PPPM (600 W vs. 400 W), higher junction capacitance (~100 pF vs. ~50 pF). | Better suited for PCB space-constrained designs but less optimal for high-frequency signal lines due to higher capacitance. | Select SMBJ20CA only if board layout favors SMD and signal bandwidth <10 MHz; BZW04P20HE3/54 preferred for through-hole reliability and lower parasitic capacitance. |
| P6KE20CA | DO-15 package; 20 V VWM, 32.4 V VC @ 12.3 A; same 400 W PPPM, but not AEC-Q101 qualified and lacks JESD201 Class 2 whisker test. | Acceptable for commercial industrial use but excluded from automotive Tier-1 BOMs requiring AEC-Q101 documentation. | Choose P6KE20CA for cost-sensitive non-automotive applications; BZW04P20HE3/54 is mandatory where automotive qualification or enhanced lead reliability is required. |
Compared with SMBJ20CA and P6KE20CA, BZW04P20HE3/54 uniquely combines AEC-Q101 qualification, JESD201 Class 2 whisker resistance, and DO-41 mechanical robustness - making it the only option qualified for safety-critical automotive sensor nodes and high-reliability industrial field devices.
Availability
BZW04P20HE3/54 is available at Aetrix Electronics and suitable for automotive sensor protection, industrial communication bus hardening, and medical signal conditioning requiring stable component supply, full traceability, and long-term lifecycle support.
Supply support for BZW04P20HE3/54 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
Vishay General Semiconductor is a global leader in discrete semiconductors, specializing in diodes, MOSFETs, optoelectronics, and passive components with emphasis on reliability, efficiency, and application-specific performance.
The BZW04P series is part of Vishay's TransZorb® TVS platform engineered for high-energy transient suppression in harsh environments - targeting automotive, industrial, and telecom infrastructure where failure resilience is non-negotiable.
FAQ
What is the clamping voltage of BZW04P20HE3/54 under a standard 10/1000 µs surge?
The BZW04P20HE3/54 exhibits a maximum clamping voltage (VC) of 33.2 V when subjected to its rated peak pulse current (IPPM) of 12.0 A using the 10/1000 µs waveform. This value is guaranteed per Vishay's datasheet (Document Number: 88316, Rev. 12-Jul-11) and defines the upper voltage limit imposed on protected circuitry during transient events. The BZW04P20HE3/54 maintains this clamping performance across its specified operating temperature range.
Is BZW04P20HE3/54 suitable for automotive applications?
Yes, BZW04P20HE3/54 is AEC-Q101 qualified and explicitly rated for automotive use, including under-hood environments. Its HE3 suffix denotes AEC-Q101 qualification and JESD201 Class 2 whisker resistance - critical for vibration-prone, high-temperature deployments. The BZW04P20HE3/54 meets requirements for protecting ECUs, ADAS sensors, and body control modules against ISO 7637-2 pulses and ESD per IEC 61000-4-2.
How does the bi-directional configuration of BZW04P20HE3/54 affect circuit layout?
The BZW04P20HE3/54 has no polarity marking and functions identically in both directions, simplifying PCB layout by eliminating orientation checks during placement. This allows direct integration into AC-coupled signal paths, differential buses (e.g., RS-485), or floating power domains without concern for anode/cathode alignment. The BZW04P20HE3/54's symmetry reduces BOM complexity and assembly errors compared to uni-directional TVS diodes.
What is the maximum junction temperature rating for BZW04P20HE3/54?
The BZW04P20HE3/54 has a maximum junction temperature (TJ max) of +175 °C, enabling reliable operation in high-ambient environments such as automotive engine compartments or industrial motor drives. Derating follows Figure 2 in the datasheet: power dissipation decreases linearly above 25 °C ambient, with 1.5 W allowed at TL = 75 °C on an infinite heatsink. This thermal capability is integral to the BZW04P20HE3/54's suitability for mission-critical applications.
Does BZW04P20HE3/54 meet RoHS and REACH compliance requirements?
Yes, BZW04P20HE3/54 is RoHS-compliant per Directive 2011/65/EU and WEEE-compliant per 2002/96/EC, as confirmed in Vishay's Material Category Policy (Doc. 91000). The HE3 suffix specifically denotes RoHS compliance plus AEC-Q101 qualification and JESD201 Class 2 whisker resistance. All plating, molding compound, and assembly materials in the BZW04P20HE3/54 meet current EU environmental standards without exemptions.
BZW04P20HE3/54 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-204AL, DO-41, Axial
- Series:
- TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 20.5V
- Voltage - Breakdown (Min):
- 22.8V
- Voltage - Clamping (Max) @ Ipp:
- 33.2V
- Current - Peak Pulse (10/1000µs):
- 12A
- Power - Peak Pulse:
- 400W
- Power Line Protection:
- No
- Applications:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 175°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Through Hole
- Supplier Device Package:
- DO-204AL (DO-41)
BZW04P20HE3/54 FAQ
1.How can I place an order for BZW04P20HE3/54 through Aetrix?
Please submit a Request for Quotation (RFQ) for BZW04P20HE3/54 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 BZW04P20HE3/54 reliable?
The price and inventory of BZW04P20HE3/54 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZW04P20HE3/54 is usually 5 days.
3.What payment methods are accepted for BZW04P20HE3/54?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZW04P20HE3/54 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZW04P20HE3/54?
BZW04P20HE3/54 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZW04P20HE3/54 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 BZW04P20HE3/54?
For technical support, including BZW04P20HE3/54 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZW04P20HE3/54 requirements.
6.How does Aetrix verify that BZW04P20HE3/54 is sourced from the original manufacturer or authorized distributors?
All BZW04P20HE3/54 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 BZW04P20HE3/54 meets industry standards.
7.What is the process for return or replacement of BZW04P20HE3/54?
All BZW04P20HE3/54 units undergo pre-shipment inspection (PSI). If there is an issue with BZW04P20HE3/54, 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 BZW04P20HE3/54 part is unused and in its original packaging.
Return procedure for BZW04P20HE3/54:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZW04P20HE3/54 Tags
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