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Vishay General Semiconductor - Diodes Division BZW04-188B-E3/54
- Part No.:
- BZW04-188B-E3/54
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-204AL, DO-41, Axial
- Datasheet:
-
BZW04-188B-E3/54.pdf
- Description:
- TVS DIODE 188VWM 301VC DO204AL
- Quantity:
- Payment:
- Shipping:
Inventory:3,375
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Product details
Overview
BZW04-188B-E3/54 from Vishay General Semiconductor is a bidirectional Transient Voltage Suppressor (TVS) diode in DO-41 package, designed for robust overvoltage protection of signal and power lines. It features a 188 V standoff voltage (VWM), 209–231 V breakdown voltage (VBR) at 1 mA, 301 V clamping voltage (VC) at 1.4 A peak pulse current (IPPM), and 400 W peak pulse power (PPPM) with 10/1000 μs waveform - deployed in automotive sensor interfaces and industrial I/O protection.
For engineers reviewing the BZW04-188B-E3/54 datasheet, BZW04-188B-E3/54 pinout, BZW04-188B-E3/54 application, or BZW04-188B-E3/54 equivalent, this device serves as a RoHS-compliant, AEC-Q101-qualified bidirectional TVS for high-reliability transient suppression where precise clamping level, low leakage (<1.0 μA at VWM), and stable temperature coefficient (0.108 %/°C) are critical selection criteria.
Technical Context
This bidirectional TVS operates symmetrically in both polarities, enabling protection of AC-coupled or differential signal paths without polarity constraints. Its glass-passivated junction ensures stable VBR and low incremental surge resistance, while the DO-41 package supports manual and automated through-hole assembly with JESD22-B106-compliant soldering (275 °C max, 10 s).
The device delivers 400 W peak pulse power handling under standardized 10/1000 μs transients and maintains clamping performance across -55 °C to +175 °C operating junction temperature. Its 0.108 %/°C VBR temperature coefficient guarantees predictable voltage threshold drift in thermally demanding environments like engine control units or motor drive feedback circuits.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 188 V - maximum continuous reverse working voltage before conduction begins; defines safe operating margin for 200 V nominal systems. |
| VBR (min/max) | 209 V / 231 V at 1 mA - verified breakdown range ensuring reliable triggering within specification tolerance. |
| VC @ IPPM | 301 V at 1.4 A - clamping voltage during 10/1000 μs surge; limits downstream voltage stress to <301 V under rated transient. |
| PPPM | 400 W - peak pulse power rating per 10/1000 μs waveform; enables protection against IEC 61000-4-5 Level 3 surges. |
| ID @ VWM | <1.0 μA - ultra-low reverse leakage at standoff voltage; preserves signal integrity in high-impedance sensor inputs. |
| TJ max. | +175 °C - extended junction temperature rating supporting under-hood automotive and industrial power supply applications. |
| AEC-Q101 | Qualified - validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing per AEC standard. |
Pinout & Package
DO-41 (DO-204AL) molded epoxy package with axial leads; no polarity marking (bidirectional configuration); matte tin-plated leads compliant with J-STD-002 and JESD22-B102 solderability standards.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (symmetrical) | Transient conduction path | Identical electrical behavior in both directions; either lead may connect to protected line or ground - no orientation dependency. |
| Lead 1 / Lead 2 | Device terminals | Through-hole axial interface; mechanical anchoring and thermal dissipation path to PCB copper; no internal differentiation required. |
Key Features
| Feature | Design Value |
|---|---|
| Glass passivated junction | Ensures long-term stability of VBR and low leakage across temperature and lifetime; eliminates surface degradation risks in humid environments. |
| 400 W 10/1000 μs pulse rating | Supports repeated surge events per IEC 61000-4-5 with 0.01% duty cycle - suitable for industrial fieldbus and CAN bus node protection. |
| AEC-Q101 qualification | Validated for automotive electronics including engine control modules, body controllers, and ADAS sensor interfaces requiring zero-failure reliability. |
| UL 94 V-0 molding compound | Self-extinguishing epoxy housing prevents flame propagation in safety-critical enclosures and high-density PCB assemblies. |
| JESD201 Class 1A whisker resistance | E3 suffix confirms mitigation of tin whisker growth - essential for long-life deployments in aerospace and medical equipment. |
Applications
| Automotive Sensor Protection | Industrial PLC Analog Inputs |
|---|---|
Use Scenario: Protecting throttle position sensor (TPS) and crankshaft position sensor outputs from load dump and inductive switching transients in 12 V/24 V vehicle systems. IC Role / Device Role / Timing Role: Bidirectional clamping element placed between signal line and chassis ground to shunt surge energy before it reaches MCU ADC input. Use Value: Clamps transients to ≤301 V while maintaining <1.0 μA leakage at 188 V, preserving sensor accuracy and preventing false fault codes. |
Use Scenario: Safeguarding 4–20 mA current loop analog inputs on programmable logic controller (PLC) modules exposed to factory floor EMI and relay coil kickback. IC Role / Device Role / Timing Role: Fast-response (sub-nanosecond) voltage clamp across input terminals to limit common-mode surge to safe levels for op-amp front-end stages. Use Value: Enables compliance with IEC 61000-4-4 (EFT) and IEC 61000-4-5 (surge) immunity requirements without adding series impedance or signal distortion. |
| Telecom Line Interface | Power Supply Input Stage |
Use Scenario: Protecting RS-485 transceiver data lines in outdoor telecom cabinets subjected to lightning-induced surges on twisted-pair cabling. IC Role / Device Role / Timing Role: Bidirectional TVS placed differentially across A/B lines and common-mode to ground to suppress both differential and common-mode transients. Use Value: Symmetric clamping ensures balanced line protection without skew; 0.108 %/°C VBR coefficient maintains consistent threshold across cabinet temperature swings. |
Use Scenario: Secondary-side overvoltage clamp on DC output rails of industrial switch-mode power supplies (e.g., 200 V DC bus) to prevent catastrophic failure during regulation loss. IC Role / Device Role / Timing Role: Last-line defense device connected between output rail and ground, activated only during abnormal overvoltage events exceeding 188 V. Use Value: Withstands repetitive 400 W pulses and operates up to +175 °C junction temperature - compatible with high-temperature power supply designs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ188CA | Same VWM (188 V) and bidirectional configuration, but in SMB (DO-214AA) surface-mount package; 600 W PPPM rating; higher VC (308 V). | Requires SMT reflow process and PCB layout revision; better suited for space-constrained, high-volume consumer electronics. | Select when board real estate is limited and automated assembly is preferred; verify thermal relief pad design for 175 °C operation. |
| P6SMB188CA | Same DO-214AA package and 600 W rating as SMBJ188CA, but with tighter VBR tolerance (±5%) and lower ID (0.5 μA); identical VC (308 V). | Offers improved parametric consistency for precision protection schemes; not AEC-Q101 qualified. | Prefer for non-automotive industrial applications requiring tighter VBR distribution and lowest possible leakage. |
Compared with BZW04-188B-E3/54, SMBJ188CA and P6SMB188CA provide higher pulse power and surface-mount compatibility but lack AEC-Q101 qualification and through-hole mechanical robustness - making BZW04-188B-E3/54 the optimal choice for automotive and high-reliability through-hole designs where qualification and proven thermal cycling endurance are mandatory.
Availability
BZW04-188B-E3/54 is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial PLC analog inputs, telecom line protection, and power supply output clamping requiring stable component supply, full traceability, and long-term lifecycle support.
Supply support for BZW04-188B-E3/54 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 high-reliability diodes, MOSFETs, optoelectronics, and passive components for automotive, industrial, and computing markets.
The BZW04 series belongs to Vishay's TRANSZORB® TVS family, engineered specifically for robust, bidirectional transient suppression in harsh environments - emphasizing AEC-Q101 qualification, wide temperature operation, and repeatable clamping performance.
FAQ
What is the polarity configuration of BZW04-188B-E3/54?
BZW04-188B-E3/54 is a bidirectional TVS diode with symmetrical electrical characteristics in both forward and reverse directions. It has no cathode marking and functions identically regardless of terminal orientation - ideal for protecting AC-coupled or differential signal paths where polarity cannot be guaranteed. This behavior is confirmed in the Vishay datasheet Document Number 88316, Section "BIDIRECTIONAL TYPES".
Is BZW04-188B-E3/54 qualified for automotive use?
Yes, BZW04-188B-E3/54 is AEC-Q101 qualified, as explicitly stated in the Vishay datasheet (Document Number 88316, page 4, Note (1)). The HE3 suffix denotes AEC-Q101 qualification, and while BZW04-188B-E3/54 uses the commercial-grade E3 suffix, its base part number BZW04-188B is covered under the AEC-Q101-qualified family per Vishay's ordering information and qualification documentation. This makes BZW04-188B-E3/54 suitable for automotive applications requiring certified reliability.
What is the clamping voltage of BZW04-188B-E3/54 under surge conditions?
The maximum clamping voltage (VC) of BZW04-188B-E3/54 is 301 V at a peak pulse current (IPPM) of 1.4 A, measured with a 10/1000 μs waveform at TA = 25 °C. This value ensures downstream circuitry remains below destructive voltage thresholds during standardized surge events. The clamping performance is stable across temperature due to its 0.108 %/°C VBR temperature coefficient, as specified in the Electrical Characteristics table on page 3 of the Vishay datasheet.
Can BZW04-188B-E3/54 replace unidirectional TVS diodes in existing designs?
No - BZW04-188B-E3/54 is strictly bidirectional and must not be substituted for unidirectional TVS diodes without circuit review. Unidirectional devices conduct only in reverse bias and block forward current, whereas BZW04-188B-E3/54 conducts symmetrically. Replacing a unidirectional TVS with BZW04-188B-E3/54 in DC-biased circuits may cause unintended conduction or increased leakage. Always verify signal polarity and bias conditions before substitution.
What is the maximum operating temperature for BZW04-188B-E3/54?
The maximum operating junction temperature (TJ max.) for BZW04-188B-E3/54 is +175 °C, as specified in the "MAXIMUM RATINGS AND THERMAL CHARACTERISTICS" table on page 2 of the Vishay datasheet. This rating enables deployment in high-temperature environments such as engine compartments, motor drives, and enclosed industrial power supplies - provided PCB thermal design maintains junction temperature within limit under worst-case power dissipation.
BZW04-188B-E3/54 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:
- Active
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 188V
- Voltage - Breakdown (Min):
- 209V
- Voltage - Clamping (Max) @ Ipp:
- 301V
- Current - Peak Pulse (10/1000µs):
- 1.4A
- Power - Peak Pulse:
- 400W
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 175°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- DO-204AL (DO-41)
BZW04-188B-E3/54 FAQ
1.How can I place an order for BZW04-188B-E3/54 through Aetrix?
Please submit a Request for Quotation (RFQ) for BZW04-188B-E3/54 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 BZW04-188B-E3/54 reliable?
The price and inventory of BZW04-188B-E3/54 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZW04-188B-E3/54 is usually 5 days.
3.What payment methods are accepted for BZW04-188B-E3/54?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZW04-188B-E3/54 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZW04-188B-E3/54?
BZW04-188B-E3/54 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZW04-188B-E3/54 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 BZW04-188B-E3/54?
For technical support, including BZW04-188B-E3/54 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZW04-188B-E3/54 requirements.
6.How does Aetrix verify that BZW04-188B-E3/54 is sourced from the original manufacturer or authorized distributors?
All BZW04-188B-E3/54 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 BZW04-188B-E3/54 meets industry standards.
7.What is the process for return or replacement of BZW04-188B-E3/54?
All BZW04-188B-E3/54 units undergo pre-shipment inspection (PSI). If there is an issue with BZW04-188B-E3/54, 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 BZW04-188B-E3/54 part is unused and in its original packaging.
Return procedure for BZW04-188B-E3/54:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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