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Vishay General Semiconductor - Diodes Division P4KE33CAHE3/54
- Part No.:
- P4KE33CAHE3/54
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-204AL, DO-41, Axial
- Datasheet:
-
P4KE33CAHE3/54.pdf
- Description:
- TVS DIODE 28.2VWM 45.7VC DO204AL
- Quantity:
- Payment:
- Shipping:
Inventory:3,136
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Product details
Overview
P4KE33CAHE3/54 from Vishay General Semiconductor is a bidirectional Transient Voltage Suppressor (TVS) diode in DO-41 package, designed for clamping voltage transients on signal or power lines. It features 31.4 V minimum and 34.7 V maximum breakdown voltage at 1.0 mA test current, 28.2 V stand-off voltage, 45.7 V maximum clamping voltage at 8.8 A peak pulse current, and 400 W peak pulse power dissipation with 10/1000 μs waveform.
For engineers reviewing the P4KE33CAHE3/54 datasheet, P4KE33CAHE3/54 pinout, P4KE33CAHE3/54 application, or P4KE33CAHE3/54 equivalent, key selection criteria include bidirectional clamping capability, AEC-Q101 qualification, DO-41 mechanical compatibility, 175 °C max junction temperature, and low 0.098 %/°C temperature coefficient of VBR.
Technical Context
This device operates as a voltage-clamping protection element in bidirectional configurations, responding to transient overvoltages in either polarity without requiring external polarity management. Its glass-passivated junction ensures stable breakdown characteristics and fast response time under surge conditions.
The P4KE33CAHE3/54 delivers 400 W peak pulse power handling per 10/1000 μs waveform at 25 °C, with thermal resistance of 66 °C/W (junction-to-lead) and 100 °C/W (junction-to-ambient), enabling reliable operation in automotive and industrial environments up to 175 °C junction temperature.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR min / max | 31.4 V / 34.7 V at 1.0 mA - defines precise clamping initiation threshold in both directions |
| VWM | 28.2 V - maximum continuous reverse working voltage before leakage exceeds 1.0 μA |
| VC @ IPPM | 45.7 V at 8.8 A - actual clamped voltage during 400 W transient, limiting downstream stress |
| PPPM | 400 W - peak surge energy absorption capacity with standard 10/1000 μs waveform |
| TJ max | +175 °C - enables use in under-hood automotive and high-temperature industrial PCBs |
| Temp. Coeff. VBR | 0.098 %/°C - low drift ensures stable clamping across operating temperature range |
| AEC-Q101 | Qualified - meets stress test requirements for automotive electronic components |
Pinout & Package
DO-41 (DO-204AL) molded epoxy package with matte tin-plated leads; no polarity marking required for bidirectional operation; compliant with J-STD-002 and JESD 22-B102 solderability standards.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Transient current entry (negative polarity) | Accepts reverse surge current during negative transients; symmetric with cathode |
| Cathode | Transient current entry (positive polarity) | Accepts forward surge current during positive transients; symmetric with anode |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC-coupled or floating signal lines without polarity constraints |
| Glass passivated junction | Ensures long-term stability of VBR and low leakage (<1.0 μA at VWM) over lifetime |
| AEC-Q101 qualification | Validates reliability for automotive powertrain, body electronics, and ADAS sensor interfaces |
| 400 W 10/1000 μs rating | Meets ISO 7637-2 Pulse 1/2a/3a and IEC 61000-4-5 Level 3 surge immunity requirements |
| DO-41 mechanical standardization | Supports automated insertion and reflow-compatible lead forming; UL 94 V-0 molding compound |
Applications
| Automotive Sensor Protection | Industrial PLC I/O Protection |
|---|---|
Use Scenario: Protecting CAN, LIN, or analog sensor inputs (e.g., temperature, pressure) from load dump and inductive switching transients in vehicle ECUs. IC Role / Device Role / Timing Role: Bidirectional voltage clamp placed directly at connector interface to limit transient amplitude before conditioning circuitry. Use Value: Prevents damage to precision ADCs and microcontroller GPIOs by clamping surges to ≤45.7 V while maintaining 28.2 V DC operating margin. | Use Scenario: Safeguarding 24 V digital input modules in programmable logic controllers against field-wiring induced surges and ground bounce. IC Role / Device Role / Timing Role: Primary front-end TVS on each isolated channel, absorbing repetitive 400 W transients without degradation. Use Value: Enables >100,000 surge cycles at rated power due to low incremental surge resistance and 175 °C thermal capability. |
| Telecom Line Interface | Consumer Power Adapter ESD |
Use Scenario: Shielding RS-485/RS-422 differential data lines in base station remote units from lightning-induced common-mode transients. IC Role / Device Role / Timing Role: Paired bidirectional TVS devices across differential pairs, referenced to local ground plane. Use Value: Maintains signal integrity with <10 pF junction capacitance at VWM, minimizing data rate impact up to 20 Mbps. | Use Scenario: Secondary-side transient suppression on 5–12 V DC outputs of wall adapters exposed to user-handling ESD and cable coupling events. IC Role / Device Role / Timing Role: Final-stage clamping device after primary regulation, preventing overvoltage delivery to connected devices. Use Value: Delivers certified IEC 61000-4-2 Level 4 (15 kV air/8 kV contact) robustness with RoHS-compliant HE3 termination. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ33CA | DO-214AA package; 600 W PPPM; 33.3 V VWM; 53.3 V VC @ 11.3 A | Higher power density but larger footprint; requires PCB layout revision | Select when higher surge margin is needed and board space allows SMB footprint |
| 1.5KE33CA | DO-201AD package; 1500 W PPPM; 28.2 V VWM; 53.3 V VC @ 28.2 A | Three-times higher peak power; higher clamping voltage; not AEC-Q101 qualified | Choose for non-automotive industrial systems requiring greater single-pulse energy absorption |
Compared with SMBJ33CA and 1.5KE33CA, the P4KE33CAHE3/54 offers optimal balance of AEC-Q101 compliance, DO-41 legacy compatibility, and 400 W surge handling-making it ideal for cost-sensitive automotive and industrial designs where footprint and qualification are critical.
Availability
P4KE33CAHE3/54 is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial PLC I/O modules, telecom line protection, and consumer power adapter secondary-side surge suppression requiring stable component supply and AEC-Q101 assurance.
Supply support for P4KE33CAHE3/54 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, MOSFETs, and protection devices with emphasis on reliability and automotive-grade qualification.
The P4KE33CAHE3/54 belongs to the TRANSZORB® family of transient voltage suppressors, engineered specifically for robust, bidirectional overvoltage protection in harsh electromagnetic environments including automotive, industrial, and telecom infrastructure.
FAQ
What is the clamping voltage of the P4KE33CAHE3/54 under maximum rated surge current?
The P4KE33CAHE3/54 exhibits a maximum clamping voltage (VC) of 45.7 V when subjected to its rated peak pulse current of 8.8 A using the standard 10/1000 μs waveform. This value is measured at TA = 25 °C and defines the upper voltage limit imposed on protected circuitry during transient events. The P4KE33CAHE3/54 maintains this clamping performance consistently due to its glass-passivated junction and low incremental surge resistance.
Is the P4KE33CAHE3/54 suitable for automotive applications?
Yes, the P4KE33CAHE3/54 is AEC-Q101 qualified and explicitly rated for automotive use. Its construction-including HE3 suffix denoting AEC-Q101 qualification, DO-41 package with matte tin plating, and 175 °C maximum junction temperature-meets stringent automotive reliability requirements. The P4KE33CAHE3/54 is commonly deployed in engine control units, body control modules, and ADAS sensor interfaces where transient immunity and long-term stability are critical.
How does the bidirectional configuration of the P4KE33CAHE3/54 affect its circuit placement?
The P4KE33CAHE3/54 has no polarity marking and conducts identically in both directions, allowing direct placement across any two nodes subject to bidirectional transients-such as AC signal lines, differential buses, or floating power rails. Unlike unidirectional TVS diodes, the P4KE33CAHE3/54 eliminates orientation errors during assembly and simplifies schematic symbol usage. Its symmetric VBR and VC characteristics ensure consistent protection regardless of surge polarity.
What is the maximum steady-state power dissipation of the P4KE33CAHE3/54?
The P4KE33CAHE3/54 has a maximum steady-state power dissipation (PD) of 1.5 W when mounted on an infinite heatsink at lead temperature (TL) = 75 °C. This rating applies to continuous DC or low-frequency reverse-biased operation-not transient suppression. In normal use, the P4KE33CAHE3/54 remains near zero bias until a transient occurs, so steady-state heating is negligible; thermal design focuses instead on pulse energy absorption and junction-to-lead thermal resistance (66 °C/W).
Does the P4KE33CAHE3/54 require derating at elevated ambient temperatures?
Yes, the P4KE33CAHE3/54 must be derated above TA = 25 °C per Figure 2 in the Vishay datasheet (Document Number: 88365). Its peak pulse power capability decreases linearly with rising initial junction temperature, reaching approximately 50 % of rated 400 W at TJ ≈ 125 °C. Designers must calculate worst-case junction temperature rise using RθJA = 100 °C/W and ensure that cumulative surge duty cycle and ambient conditions keep TJ ≤ 175 °C. The P4KE33CAHE3/54's 0.098 %/°C VBR coefficient further supports stable operation across this range.
P4KE33CAHE3/54 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):
- 28.2V
- Voltage - Breakdown (Min):
- 31.4V
- Voltage - Clamping (Max) @ Ipp:
- 45.7V
- Current - Peak Pulse (10/1000µs):
- 8.8A
- 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)
P4KE33CAHE3/54 FAQ
1.How can I place an order for P4KE33CAHE3/54 through Aetrix?
Please submit a Request for Quotation (RFQ) for P4KE33CAHE3/54 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 P4KE33CAHE3/54 reliable?
The price and inventory of P4KE33CAHE3/54 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P4KE33CAHE3/54 is usually 5 days.
3.What payment methods are accepted for P4KE33CAHE3/54?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4KE33CAHE3/54 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4KE33CAHE3/54?
P4KE33CAHE3/54 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4KE33CAHE3/54 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 P4KE33CAHE3/54?
For technical support, including P4KE33CAHE3/54 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4KE33CAHE3/54 requirements.
6.How does Aetrix verify that P4KE33CAHE3/54 is sourced from the original manufacturer or authorized distributors?
All P4KE33CAHE3/54 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 P4KE33CAHE3/54 meets industry standards.
7.What is the process for return or replacement of P4KE33CAHE3/54?
All P4KE33CAHE3/54 units undergo pre-shipment inspection (PSI). If there is an issue with P4KE33CAHE3/54, 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 P4KE33CAHE3/54 part is unused and in its original packaging.
Return procedure for P4KE33CAHE3/54:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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