My Inquiry
My Account
Vishay General Semiconductor - Diodes Division BZW04P20BHE3/54
- Part No.:
- BZW04P20BHE3/54
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-204AL, DO-41, Axial
- Datasheet:
-
BZW04P20BHE3/54.pdf
- Description:
- TVS DIODE 20.5VWM 33.2VC DO204AL
- Quantity:
- Payment:
- Shipping:
Inventory:9,778
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
BZW04P20BHE3/54 from Vishay General Semiconductor is a bi-directional TransZorb® transient voltage suppressor (TVS) diode designed for robust overvoltage protection in signal and power lines. It features a 20.5 V stand-off voltage (VWM), 22.8–26.4 V breakdown voltage (VBR at 1 mA), 33.2 V clamping voltage (VC) at 12 A peak pulse current, and 400 W peak pulse power rating with 10/1000 µs waveform - deployed in automotive sensor interfaces and industrial I/O protection.
For engineers reviewing the BZW04P20BHE3/54 datasheet, BZW04P20BHE3/54 pinout, BZW04P20BHE3/54 application, or BZW04P20BHE3/54 equivalent, key selection criteria include its AEC-Q101 qualification, DO-204AL (DO-41) package, bi-directional symmetry, low 0.094 %/°C VBR temperature coefficient, and compliance with IEC 61000-4-2/4-4/4-5 surge immunity standards.
Technical Context
This bi-directional TVS operates symmetrically in both polarities, enabling single-device protection of AC-coupled or floating signal paths without polarity concerns. Its glass-passivated junction ensures stable leakage performance and fast response (<1 ns), while the 10/1000 µs surge rating reflects standardized lightning and switching transient immunity testing per ANSI/IEEE C62.35.
The device is rated for 175 °C maximum junction temperature and derates linearly above 25 °C ambient, supporting operation in under-hood automotive and high-temperature industrial environments. Its 1.0 µA max reverse leakage at VWM minimizes standby power impact on sensitive analog or low-power digital circuits.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 20.5 V - Maximum continuous working voltage before clamping begins; defines safe operating margin for 24 V nominal systems. |
| VBR (min/max) | 22.8 V / 26.4 V at 1 mA - Tight breakdown window ensures predictable turn-on across production lots and temperature. |
| VC @ IPPM | 33.2 V at 12 A - Clamping voltage limits downstream IC stress during 400 W transients; enables robust MOSFET/gate driver protection. |
| PPPM | 400 W - Peak pulse power handling per 10/1000 µs waveform; meets Level 4 IEC 61000-4-5 surge requirements. |
| IPPM | 12 A - Peak pulse current capability directly correlates to survivability against 2 Ω source impedance surges. |
| TJmax | 175 °C - High junction temperature rating supports placement near heat sources in automotive ECUs and motor drives. |
| Temp. Coeff. | 0.094 %/°C - Low VBR drift ensures stable clamping threshold across -55 °C to +175 °C operating range. |
Pinout & Package
Package: DO-204AL (DO-41), axial leaded, epoxy-molded case meeting UL 94 V-0 flammability rating. Matte tin-plated leads compliant with J-STD-002 and JESD22-B102 solderability standards. Bi-directional construction has no polarity marking.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (symmetrical) | Bi-directional avalanche junction | Either end functions identically as protected line terminal; no cathode band - enables blind mounting in PCB layouts. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including HTOL, TC, UHAST, and ESD-HBM/MM per JESD47 - suitable for engine control, ADAS, and body electronics. |
| Glass passivated junction | Eliminates surface contamination sensitivity and improves long-term leakage stability vs. epoxy-passivated alternatives. |
| 400 W 10/1000 µs rating | Supports IEC 61000-4-5 surge immunity up to 1 kV (2 Ω source) without degradation after repeated events. |
| Low incremental surge resistance | Enables tighter VC/VBR ratio (1.46×) - reduces let-through energy to protected ICs compared to higher-RSURGE TVS devices. |
| RoHS-compliant HE3 suffix | Meets JESD201 Class 2 whisker resistance and Directive 2011/65/EU - certified for automotive and industrial production use. |
Applications
| Automotive Sensor Protection | Industrial PLC Analog Input |
|---|---|
|
Use Scenario: Protecting CAN/LIN bus transceivers and Hall-effect sensor outputs from load dump and ISO 7637-2 pulses in vehicle chassis modules. IC Role / Device Role / Timing Role: Bi-directional clamping element placed between signal line and ground, absorbing transients before they reach the input ESD structure of the transceiver. Use Value: Prevents latch-up or permanent damage to 5 V or 3.3 V interface ICs during 100 V/50 ms load dump events - validated per AEC-Q100 stress profiles. |
Use Scenario: Safeguarding 4–20 mA current loop inputs in programmable logic controllers exposed to field wiring surges and relay coil flyback. IC Role / Device Role / Timing Role: Primary overvoltage clamp on the analog front-end, positioned upstream of precision op-amps and ADC drivers. Use Value: Maintains <1 µA leakage at 20.5 V VWM, avoiding offset errors in µV-level measurement circuits while surviving 4 kV EFT bursts. |
| Telecom Line Interface | Consumer Appliance Motor Control |
|
Use Scenario: Shielding RS-485 transceivers in base station backhaul equipment from induced lightning surges on outdoor cabling. IC Role / Device Role / Timing Role: Secondary protection stage (after gas discharge tube) on differential data lines, providing low-clamp, fast-response backup clamping. Use Value: 33.2 V clamping at 12 A ensures RS-485 receivers (rated ±12 V common-mode) remain within absolute maximum ratings during 10/1000 µs threats. |
Use Scenario: Guarding microcontroller GPIOs and gate drivers in washing machine motor inverters against commutation spikes from BLDC motor windings. IC Role / Device Role / Timing Role: Localized transient suppressor mounted adjacent to half-bridge driver ICs, shunting inductive kickback from freewheeling diodes. Use Value: 175 °C TJmax allows direct placement near power stages; 0.094 %/°C tempco prevents thermal runaway during sustained high-temp operation. |
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 600 W PPPM but higher capacitance (~150 pF). | Higher junction capacitance limits use in >1 MHz data lines; better suited for power rail vs. signal line protection. | Select SMBJ20CA when board space permits SMC/SMB footprint and higher surge margin is needed over longer durations. |
| 1.5KE20CA | DO-201AD package; 20 V VWM, 34.6 V VC @ 11.6 A; 1500 W PPPM but slower response due to larger junction area. | Slower turn-on increases let-through energy; not recommended for fast-edge digital signals or low-voltage logic interfaces. | Choose 1.5KE20CA only for bulk DC rail clamping where physical size and cost outweigh speed and leakage constraints. |
Compared with SMBJ20CA and 1.5KE20CA, BZW04P20BHE3/54 offers superior thermal robustness (175 °C vs. 150 °C), AEC-Q101 qualification out-of-box, and lower leakage (1.0 µA vs. 5–10 µA), making it the preferred choice for automotive-specified signal-line protection where reliability and precision clamping are critical.
Availability
BZW04P20BHE3/54 is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial PLC analog inputs, telecom line protection, and consumer appliance motor control requiring stable component supply and AEC-Q101 traceability.
Supply support for BZW04P20BHE3/54 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, rectifiers, TVS, MOSFETs, and optoelectronics with emphasis on reliability and automotive-grade validation.
The BZW04P series is part of Vishay's TransZorb® TVS platform engineered specifically for high-reliability bi-directional surge suppression in harsh-environment applications including automotive, industrial automation, and telecommunications infrastructure.
FAQ
What is the clamping voltage of BZW04P20BHE3/54 and how does it protect downstream circuitry?
The BZW04P20BHE3/54 has a maximum clamping voltage (VC) of 33.2 V at 12 A peak pulse current (10/1000 µs waveform). This value defines the upper voltage limit imposed on protected lines during surge events, ensuring that connected ICs - such as 24 V-rated CAN transceivers or 3.3 V microcontrollers with external level-shifting - remain within their absolute maximum voltage ratings. The low VC/VBR ratio (1.46×) reflects efficient energy diversion with minimal let-through stress.
Is BZW04P20BHE3/54 suitable for automotive applications, and what qualifications does it hold?
Yes, BZW04P20BHE3/54 is explicitly AEC-Q101 qualified, as confirmed by the HE3 suffix and Vishay documentation. It undergoes stress testing including high-temperature operating life (HTOL), temperature cycling (TC), unbiased highly accelerated stress test (UHAST), and ESD-HBM/MM per JESD47. This makes BZW04P20BHE3/54 appropriate for under-hood and cabin modules in passenger vehicles, including engine control units, ADAS sensors, and body control modules.
How does the bi-directional design of BZW04P20BHE3/54 affect its PCB layout and usage?
The bi-directional architecture of BZW04P20BHE3/54 eliminates polarity marking - there is no cathode band, and either lead functions identically. This simplifies PCB layout by removing orientation constraints, reducing assembly errors, and enabling automated placement without vision-based polarity verification. It is ideal for protecting AC-coupled lines, differential buses (e.g., RS-485), or floating sensor outputs where voltage polarity reversal is possible.
What is the maximum operating temperature and thermal derating behavior of BZW04P20BHE3/54?
BZW04P20BHE3/54 has a maximum junction temperature (TJmax) of 175 °C and derates linearly above 25 °C ambient, per Figure 2 in the Vishay datasheet (88316). At 100 °C ambient, its peak pulse power capability drops to approximately 65 % of the rated 400 W. This high TJmax enables reliable operation in thermally dense environments such as motor drive inverters or automotive power distribution units without requiring additional heatsinking.
Does BZW04P20BHE3/54 meet RoHS and other environmental compliance standards?
Yes, BZW04P20BHE3/54 carries the HE3 suffix, indicating full compliance with RoHS Directive 2011/65/EU and WEEE 2002/96/EC. It also meets JESD201 Class 2 whisker resistance requirements and uses UL 94 V-0 rated molding compound. These certifications are documented in Vishay's material declarations and are verified through third-party lab testing, supporting global deployment in consumer, industrial, and automotive supply chains.
BZW04P20BHE3/54 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:
- -
- Bidirectional Channels:
- 1
- 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)
BZW04P20BHE3/54 FAQ
1.How can I place an order for BZW04P20BHE3/54 through Aetrix?
Please submit a Request for Quotation (RFQ) for BZW04P20BHE3/54 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 BZW04P20BHE3/54 reliable?
The price and inventory of BZW04P20BHE3/54 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZW04P20BHE3/54 is usually 5 days.
3.What payment methods are accepted for BZW04P20BHE3/54?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZW04P20BHE3/54 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZW04P20BHE3/54?
BZW04P20BHE3/54 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZW04P20BHE3/54 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 BZW04P20BHE3/54?
For technical support, including BZW04P20BHE3/54 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZW04P20BHE3/54 requirements.
6.How does Aetrix verify that BZW04P20BHE3/54 is sourced from the original manufacturer or authorized distributors?
All BZW04P20BHE3/54 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 BZW04P20BHE3/54 meets industry standards.
7.What is the process for return or replacement of BZW04P20BHE3/54?
All BZW04P20BHE3/54 units undergo pre-shipment inspection (PSI). If there is an issue with BZW04P20BHE3/54, 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 BZW04P20BHE3/54 part is unused and in its original packaging.
Return procedure for BZW04P20BHE3/54:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZW04P20BHE3/54 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
Comparator circuit design covering voltage thresholds, input limits, open-collector outputs, LM393 wiring, op-amp differences, hysteresis, timing, window detection and practical fault diagnosis.
Schmitt triggers use separate rising and falling thresholds to stabilize slow or noisy signals. This guide covers hysteresis, 74HC14 and 74HCT14 selection, comparator calculations, RC oscillators and p…
Counterfeit components can hide behind convincing markings and passing basic function tests. This engineering reference covers source traceability, external inspection, X-ray, XRF, electrical testing, …
A practical engineering and sourcing framework covering lifecycle verification, lifetime-buy calculations, replacement qualification, supplier checks and counterfeit-risk controls.
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
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 …
