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Vishay General Semiconductor - Diodes Division BZW04-188HE3/54
- Part No.:
- BZW04-188HE3/54
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-204AL, DO-41, Axial
- Datasheet:
-
BZW04-188HE3/54.pdf
- Description:
- TVS DIODE 188VWM 301VC DO204AL
- Quantity:
- Payment:
- Shipping:
Inventory:5,617
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Product details
Overview
BZW04-188HE3/54 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, 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 BZW04-188HE3/54 datasheet, BZW04-188HE3/54 pinout, BZW04-188HE3/54 application, or BZW04-188HE3/54 equivalent, this AEC-Q101 qualified device offers verified bidirectional surge suppression, low leakage (<1 µA at VWM), and stable temperature coefficient (0.108 %/°C), critical for high-reliability 12 V/24 V system designs.
Technical Context
This TVS diode uses a glass-passivated silicon junction to achieve fast response time (<1 ns), low incremental surge resistance, and excellent clamping ratio (VC/VBR ≈ 1.33). Its bidirectional configuration enables symmetrical transient suppression on AC-coupled or floating lines without polarity concerns.
Rated for operation from –55 °C to +175 °C junction temperature, it supports high-temperature automotive under-hood applications. The device complies with JESD22-B102 solderability standards and meets UL 94 V-0 flammability requirements via its molded epoxy DO-41 package.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 188 V - maximum continuous reverse working voltage before conduction begins; defines safe operating margin for 150–180 V nominal systems. |
| VBR (min/max) | 209 V / 231 V at 1 mA - precise breakdown threshold ensures predictable turn-on during transients; tight 10% tolerance supports design margining. |
| VC @ IPPM | 301 V at 1.4 A - clamping voltage limits downstream component stress; low VC/VBR ratio (1.33) indicates efficient energy diversion. |
| PPPM | 400 W - peak pulse power handling with 10/1000 µs waveform; sufficient for ISO 7637-2 Pulse 1/2a/5a and IEC 61000-4-5 Level 3 surges. |
| ID @ VWM | <1 µA - ultra-low reverse leakage preserves signal integrity and minimizes standby power loss in high-impedance circuits. |
| TJ max | +175 °C - extended junction temperature rating enables use in engine control units, motor drives, and other high-thermal-load environments. |
| AEC-Q101 | Qualified - validated for automotive-grade reliability including HTOL, TC, and HAST testing; suitable for ASIL-B supporting subsystems. |
Pinout & Package
DO-41 (DO-204AL) axial-leaded package: hermetically sealed glass-passivated chip in flame-retardant epoxy housing; matte tin-plated leads compliant with J-STD-002 and JESD22-B102; lead-free (RoHS-compliant) and whisker-tested per JESD201 Class 2 (HE3 suffix).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (unmarked end) | Current entry point in forward bias; common reference for bidirectional clamping | No polarity marking required - symmetric structure allows either lead to serve as input/output; eliminates orientation errors during manual assembly. |
| Cathode (unmarked end) | Current exit point in forward bias; identical electrical role to anode in bidirectional mode | Both terminals behave identically under positive or negative transients; simplifies PCB layout and reduces BOM complexity vs. unidirectional alternatives. |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Enables stable VBR and low leakage across temperature; resists moisture ingress and electrochemical degradation in humid environments. |
| 400 W 10/1000 µs pulse rating | Withstands repetitive surge events up to 0.01% duty cycle - supports long-term reliability in cyclic industrial equipment and automotive ECUs. |
| AEC-Q101 qualification | Validated for automotive use including thermal cycling, high-temperature operating life, and mechanical shock - no additional qualification needed for Tier 1 programs. |
| UL 94 V-0 molding compound | Prevents flame propagation during catastrophic failure; meets safety requirements for enclosed modules in transportation and industrial enclosures. |
| JESD201 Class 2 whisker resistance | Eliminates tin whisker growth risk over 15+ year service life - critical for aerospace, medical, and mission-critical automotive applications. |
Applications
| Automotive Sensor Protection | Industrial PLC I/O Protection |
|---|---|
Use Scenario: Protecting CAN/LIN bus transceivers and analog sensor inputs (e.g., pressure, temperature) from load dump and inductive switching transients in 12 V/24 V vehicle networks. IC Role / Device Role / Timing Role: Bidirectional clamping element placed between signal line and ground, responding within <1 ns to suppress spikes exceeding 188 V. Use Value: Prevents latch-up or permanent damage to precision ADC front-ends and transceiver ICs while maintaining signal fidelity below VWM. |
Use Scenario: Shielding digital input modules in programmable logic controllers from field-wiring induced surges (e.g., relay coil flyback, lightning-induced coupling on long cable runs). IC Role / Device Role / Timing Role: Primary overvoltage clamp on 24 V DC input channels, absorbing up to 400 W pulses without degradation over >100,000 cycles. Use Value: Extends mean time between failures (MTBF) of I/O cards by eliminating transient-induced firmware resets and input stage burnout. |
| Telecom Line Interface | Consumer Appliance Motor Control |
Use Scenario: Safeguarding RS-485 transceivers and Ethernet PHYs in outdoor telecom cabinets exposed to ESD and induced lightning surges. IC Role / Device Role / Timing Role: Secondary protection device downstream of GDTs or gas arrestors, providing low-clamp refinement for sub-microsecond transients. Use Value: Reduces VC from >500 V (GDT alone) to 301 V, enabling use of lower-voltage-rated interface ICs and reducing system BOM cost. |
Use Scenario: Suppressing commutation spikes from brushed DC motors and solenoids in washing machines, HVAC blowers, and power tools. IC Role / Device Role / Timing Role: Across-the-line TVS on motor terminals or H-bridge outputs, conducting bidirectionally during both motoring and regenerative braking phases. Use Value: Eliminates need for separate forward/reverse diodes; single-device solution reduces PCB area and assembly cost while improving surge immunity consistency. |
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 SMC (DO-214AB) package - 5.3 mm × 4.6 mm surface-mount vs. DO-41 axial leads. | Requires rework of PCB layout; better suited for automated SMT lines and space-constrained designs, but lacks axial through-hole mechanical robustness. | Select SMBJ188CA only when board real estate is limited and wave-solder/reflow compatibility is prioritized over manual repairability. |
| 1.5KE188CA | Higher PPPM (1500 W), same VWM/VBR, but larger DO-201AD package and higher VC (308 V); not AEC-Q101 qualified. | Used in non-automotive industrial power supplies where footprint and qualification are secondary to raw surge capacity. | Choose 1.5KE188CA for cost-sensitive, non-automotive applications needing higher single-pulse margin - not recommended for AEC-Q101–mandated designs. |
Compared with SMBJ188CA and 1.5KE188CA, BZW04-188HE3/54 uniquely combines AEC-Q101 qualification, DO-41 axial form factor for high-vibration resilience, and JESD201 Class 2 whisker resistance - making it the only option qualified for automotive under-hood deployment without derating or additional validation.
Availability
BZW04-188HE3/54 is available at Aetrix Electronics and suitable for automotive electronics, industrial control systems, and telecom infrastructure requiring stable component supply, long-lifecycle support, and traceable AEC-Q101–compliant parts.
Supply support for BZW04-188HE3/54 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, and optoelectronics for automotive, industrial, and computing markets.
The BZW04 series targets high-energy transient suppression in harsh environments, with design emphasis on AEC-Q101 compliance, thermal stability, and repeatable clamping performance across automotive temperature ranges.
FAQ
What is the clamping voltage of BZW04-188HE3/54 and how does it protect downstream components?
The BZW04-188HE3/54 has a maximum clamping voltage (VC) of 301 V at 1.4 A peak pulse current (10/1000 µs waveform). This value defines the highest voltage imposed on protected circuitry during a surge event. By limiting transient voltage to ≤301 V, the BZW04-188HE3/54 prevents overstress of downstream ICs rated for ≤330 V absolute maximum, such as CAN transceivers and microcontroller I/O pins. Its low VC/VBR ratio ensures efficient energy shunting without excessive power dissipation in the protected path.
Is BZW04-188HE3/54 unidirectional or bidirectional, and how is polarity identified?
BZW04-188HE3/54 is a bidirectional TVS diode - confirmed by its "B"-suffixed family designation (BZW04-188B) and absence of cathode band marking. Unlike unidirectional types, it conducts symmetrically for both positive and negative transients, making it ideal for AC-coupled lines, differential buses, and floating sensor interfaces. No polarity identification is needed during placement, reducing assembly errors and enabling simplified schematic symbol usage.
Does BZW04-188HE3/54 meet automotive qualification standards?
Yes, BZW04-188HE3/54 is explicitly AEC-Q101 qualified, as indicated by the "HE3" suffix per Vishay's ordering nomenclature. This certification covers stress tests including high-temperature operating life (HTOL), temperature cycling (TC), and highly accelerated stress testing (HAST), validating its suitability for automotive powertrain, chassis, and body electronics. Documentation is provided in Vishay document number 88316, revision 16-Sep-2021.
What is the junction temperature range and thermal derating behavior of BZW04-188HE3/54?
BZW04-188HE3/54 operates from –55 °C to +175 °C junction temperature. Its peak pulse power (PPPM) is derated linearly above 25 °C ambient, dropping to ~50% at TJ = 125 °C and ~25% at TJ = 175 °C per Figure 2 in the datasheet. This behavior must be accounted for in thermally constrained applications like engine control units, where sustained high ambient temperatures reduce effective surge margin unless heatsinking or layout thermal relief is applied.
How does the HE3 suffix differ from the E3 suffix in BZW04-188HE3/54?
The "HE3" suffix denotes AEC-Q101 qualification and JESD201 Class 2 whisker resistance, whereas "E3" indicates RoHS-compliant commercial-grade parts without automotive qualification. For BZW04-188HE3/54, HE3 confirms full automotive reliability testing, enhanced lead finish durability, and extended temperature capability - essential for safety-critical or long-life deployments. The base electrical specs remain identical between E3 and HE3 variants; only reliability attributes differ.
BZW04-188HE3/54 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:
- 1
- Bidirectional Channels:
- -
- 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:
- -
- 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)
BZW04-188HE3/54 FAQ
1.How can I place an order for BZW04-188HE3/54 through Aetrix?
Please submit a Request for Quotation (RFQ) for BZW04-188HE3/54 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 BZW04-188HE3/54 reliable?
The price and inventory of BZW04-188HE3/54 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZW04-188HE3/54 is usually 5 days.
3.What payment methods are accepted for BZW04-188HE3/54?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZW04-188HE3/54 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZW04-188HE3/54?
BZW04-188HE3/54 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZW04-188HE3/54 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 BZW04-188HE3/54?
For technical support, including BZW04-188HE3/54 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZW04-188HE3/54 requirements.
6.How does Aetrix verify that BZW04-188HE3/54 is sourced from the original manufacturer or authorized distributors?
All BZW04-188HE3/54 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 BZW04-188HE3/54 meets industry standards.
7.What is the process for return or replacement of BZW04-188HE3/54?
All BZW04-188HE3/54 units undergo pre-shipment inspection (PSI). If there is an issue with BZW04-188HE3/54, 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 BZW04-188HE3/54 part is unused and in its original packaging.
Return procedure for BZW04-188HE3/54:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZW04-188HE3/54 Tags
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