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Vishay General Semiconductor - Diodes Division P4KE33CA-E3/54
- Part No.:
- P4KE33CA-E3/54
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-204AL, DO-41, Axial
- Datasheet:
-
P4KE33CA-E3/54.pdf
- Description:
- TVS DIODE 28.2VWM 45.7VC DO204AL
- Quantity:
- Payment:
- Shipping:
Inventory:2,330
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Product details
Overview
P4KE33CA-E3/54 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 a 33 V breakdown voltage (VBR min/max = 31.4–34.7 V at 1.0 mA), 28.2 V stand-off voltage (VWM), 45.7 V maximum clamping voltage at 8.8 A peak pulse current, and 400 W peak pulse power rating with 10/1000 μs waveform - used to protect MOSFETs and sensor signal lines in automotive ECUs.
For engineers reviewing the P4KE33CA-E3/54 datasheet, P4KE33CA-E3/54 pinout, P4KE33CA-E3/54 application, or P4KE33CA-E3/54 equivalent, key selection criteria include bidirectional clamping capability, DO-41 leaded package compatibility with through-hole PCB assembly, AEC-Q101 qualification for automotive use, and verified 175 °C junction temperature rating under transient stress.
Technical Context
This device operates as a silicon avalanche diode optimized for fast-response transient suppression. Its bidirectional configuration enables symmetrical clamping in AC-coupled or floating signal paths without polarity sensitivity, and its glass-passivated junction ensures stable leakage performance (<1.0 μA at VWM) across -55 °C to +175 °C operating range.
The P4KE33CA-E3/54 delivers 400 W peak pulse power handling per 10/1000 μs waveform with low incremental surge resistance, enabling effective energy diversion during ESD or load-switching events. Its thermal resistance (RθJL = 66 °C/W) supports reliable operation under repetitive surge conditions when mounted with standard lead lengths.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 31.4 V / 34.7 V at 1.0 mA - defines precise avalanche initiation threshold for bidirectional clamping |
| VWM | 28.2 V - maximum continuous reverse working voltage before significant leakage begins |
| VC @ IPPM | 45.7 V at 8.8 A - clamped voltage seen by protected circuit during full-rated transient event |
| PPPM | 400 W - peak transient power dissipation capability with standardized 10/1000 μs surge waveform |
| IPPM | 8.8 A - maximum non-repetitive peak current the device safely clamps without failure |
| TJ max. | +175 °C - maximum junction temperature rating confirming suitability for under-hood automotive environments |
| AEC-Q101 | Qualified - validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing |
Pinout & Package
Package: DO-41 (DO-204AL), axial-leaded, molded epoxy body with matte tin-plated leads; RoHS-compliant (E3 suffix), UL 94 V-0 rated compound.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode / Cathode (bidirectional) | Transient conduction path | No polarity marking; symmetric terminals conduct identically in either direction during overvoltage events |
| Lead 1 / Lead 2 | PCB interconnect interface | Standard axial leads support through-hole mounting; 10 s solder dip tolerance at 275 °C per JESD 22-B106 |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables protection of AC-coupled or floating circuits (e.g., RS-485, CAN bus stubs) without polarity concerns |
| Glass passivated junction | Ensures stable VBR tolerance and low leakage (<1.0 μA at VWM) over lifetime and temperature |
| 400 W peak pulse power | Handles high-energy transients from inductive switching (e.g., solenoid drivers) without degradation |
| AEC-Q101 qualification | Validates robustness for automotive applications including engine control, body electronics, and ADAS sensors |
| DO-41 mechanical compatibility | Supports legacy through-hole assembly processes and manual rework while maintaining thermal performance |
Applications
| Automotive Sensor Protection | Industrial PLC I/O Protection |
|---|---|
Use Scenario: Protecting analog output lines of pressure or temperature sensors in engine control modules exposed to load dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Bidirectional TVS clamp placed between signal line and ground to limit transient voltage to <46 V during 10/1000 μs surges. Use Value: Prevents damage to downstream op-amps and ADC inputs while maintaining signal integrity below 28.2 V normal operation. |
Use Scenario: Shielding digital input channels of programmable logic controllers from field-wiring induced transients in factory automation. IC Role / Device Role / Timing Role: Fast-response voltage clamp on 24 V DC input lines to suppress EFT bursts and surge coupling from adjacent motor drives. Use Value: Enables >100,000 surge cycles without parameter shift, verified per IEC 61000-4-4/5 test profiles. |
| Consumer Power Adapter Output | Telecom Line Interface |
Use Scenario: Safeguarding secondary-side DC outputs of wall adapters against capacitor discharge and lightning-induced surges. IC Role / Device Role / Timing Role: Standoff-rated TVS (28.2 V) placed across +VOUT/GND to clamp overvoltage before reaching USB-PD or charging ICs. Use Value: Limits clamping voltage to 45.7 V at full 8.8 A surge, preventing latch-up in downstream PMICs. |
Use Scenario: Protecting Ethernet PHY or DSL line drivers from longitudinal surges entering via RJ-45 jacks in residential gateways. IC Role / Device Role / Timing Role: Bidirectional transient suppressor bridging differential pair to chassis ground, leveraging symmetry for common-mode suppression. Use Value: Maintains <1.0 μA leakage at 28.2 V to avoid signal attenuation on 100 Ω impedance lines. |
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 | Surface-mount SMB package (vs. DO-41 through-hole); same 33 V VBR, 400 W rating, but lower RθJA (50 °C/W) | Preferred for space-constrained PCBs with automated SMT assembly; not suitable for manual through-hole repair | Select SMBJ33CA when board area is limited and reflow capability exists; verify pad thermal relief for surge duty cycle |
| 1.5KE33CA | Higher 1500 W peak power rating; larger DO-201 package; identical VBR/VWM specs but higher IPPM (38.1 A) | Used where single-event surge energy exceeds 400 W, e.g., main power rail entry points or industrial motor controls | Choose 1.5KE33CA only if system-level testing confirms need for >400 W clamping; adds footprint and cost vs. P4KE33CA-E3/54 |
Compared with SMBJ33CA and 1.5KE33CA, the P4KE33CA-E3/54 offers optimal balance of proven automotive reliability (AEC-Q101), through-hole manufacturability, and 400 W surge capacity - making it preferred for cost-sensitive, serviceable, and thermally moderate protection nodes.
Availability
P4KE33CA-E3/54 is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial PLC I/O modules, and consumer power adapter outputs requiring stable component supply with AEC-Q101 validation and DO-41 through-hole compatibility.
Supply support for P4KE33CA-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 diodes, rectifiers, TVS devices, and optoelectronics with emphasis on reliability and application-specific performance.
The P4KE33CA-E3/54 belongs to the TRANSZORB® family of transient suppressors, engineered for robust overvoltage protection in automotive, industrial, and telecom systems where fast response and repeatable clamping are critical.
FAQ
What is the breakdown voltage tolerance of P4KE33CA-E3/54?
The P4KE33CA-E3/54 has a specified breakdown voltage range of 31.4 V to 34.7 V at 1.0 mA test current, representing ±5.2% tolerance around the nominal 33 V rating. This tight VBR window ensures consistent clamping behavior across production lots and temperature extremes from -55 °C to +175 °C, as confirmed in Vishay document 88365.
Is P4KE33CA-E3/54 suitable for automotive applications?
Yes, the P4KE33CA-E3/54 is AEC-Q101 qualified per Vishay documentation, with validation covering temperature cycling, high-temperature reverse bias, and ESD robustness. Its DO-41 package, 175 °C max junction temperature, and bidirectional clamping make it appropriate for engine control units, body control modules, and ADAS sensor interfaces where reliability under harsh conditions is required.
How does the clamping voltage of P4KE33CA-E3/54 compare to its breakdown voltage?
The P4KE33CA-E3/54 clamps to 45.7 V at its rated 8.8 A peak pulse current, which is 39% above its minimum breakdown voltage (31.4 V). This 14.3 V differential reflects the device's incremental surge resistance and ensures protected circuits remain below critical voltage thresholds during standardized 10/1000 μs transients, as defined in the primary characteristics table of document 88365.
What is the maximum reverse leakage current for P4KE33CA-E3/54 at rated VWM?
At its 28.2 V stand-off voltage (VWM), the P4KE33CA-E3/54 exhibits a maximum reverse leakage current of 1.0 μA at 25 °C, per Vishay's electrical characteristics table. This low leakage preserves signal integrity in high-impedance sensor interfaces and avoids unnecessary power loss in battery-operated systems.
Does P4KE33CA-E3/54 have polarity markings on the package?
No, the P4KE33CA-E3/54 is a bidirectional TVS diode and carries no polarity marking on its DO-41 package. Unlike unidirectional variants (e.g., P4KE33A), which feature a cathode band, the CA-suffix version functions identically in both directions - simplifying placement and eliminating orientation errors during manual or automated assembly.
P4KE33CA-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):
- 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:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 175°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- DO-204AL (DO-41)
P4KE33CA-E3/54 FAQ
1.How can I place an order for P4KE33CA-E3/54 through Aetrix?
Please submit a Request for Quotation (RFQ) for P4KE33CA-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 P4KE33CA-E3/54 reliable?
The price and inventory of P4KE33CA-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 P4KE33CA-E3/54 is usually 5 days.
3.What payment methods are accepted for P4KE33CA-E3/54?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4KE33CA-E3/54 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4KE33CA-E3/54?
P4KE33CA-E3/54 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4KE33CA-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 P4KE33CA-E3/54?
For technical support, including P4KE33CA-E3/54 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4KE33CA-E3/54 requirements.
6.How does Aetrix verify that P4KE33CA-E3/54 is sourced from the original manufacturer or authorized distributors?
All P4KE33CA-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 P4KE33CA-E3/54 meets industry standards.
7.What is the process for return or replacement of P4KE33CA-E3/54?
All P4KE33CA-E3/54 units undergo pre-shipment inspection (PSI). If there is an issue with P4KE33CA-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 P4KE33CA-E3/54 part is unused and in its original packaging.
Return procedure for P4KE33CA-E3/54:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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