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Vishay General Semiconductor - Diodes Division P4KE33AHE3/54
- Part No.:
- P4KE33AHE3/54
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-204AL, DO-41, Axial
- Datasheet:
-
P4KE33AHE3/54.pdf
- Description:
- TVS DIODE 28.2VWM 45.7VC DO204AL
- Quantity:
- Payment:
- Shipping:
Inventory:5,415
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Product details
Overview
P4KE33AHE3/54 from Vishay General Semiconductor is a unidirectional Transient Voltage Suppressor (TVS) diode in DO-41 package, designed for circuit-level ESD and surge protection. It features 31.4 V minimum breakdown voltage (VBR), 28.2 V maximum standoff voltage (VWM), 45.7 V clamping voltage at 8.8 A peak pulse current, 400 W peak pulse power rating (10/1000 μs), and AEC-Q101 qualification for automotive-grade reliability.
For engineers reviewing the P4KE33AHE3/54 datasheet, P4KE33AHE3/54 pinout, P4KE33AHE3/54 application, or P4KE33AHE3/54 equivalent, key selection criteria include clamping performance under 10/1000 μs transients, unidirectional polarity for DC rail protection, DO-41 leaded package compatibility with through-hole assembly, and AEC-Q101 qualification for automotive sensor interface and power line protection.
Technical Context
The P4KE33AHE3/54 operates as a silicon avalanche diode with glass-passivated junction, enabling fast response (<1 ns) to transient overvoltages. Its unidirectional configuration provides cathode-anode conduction only, with reverse-biased clamping action above VWM = 28.2 V.
It delivers 45.7 V clamping voltage at 8.8 A IPPM under standardized 10/1000 μs waveform, with thermal resistance RθJL = 66 °C/W and maximum junction temperature of 175 °C. The device supports 40 A IFSM surge current (8.3 ms half-sine) and exhibits 0.098 %/°C VBR temperature coefficient.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 31.4 V / 34.7 V at 1.0 mA test current - defines reliable avalanche initiation range for predictable clamping onset |
| VWM | 28.2 V - maximum continuous reverse operating voltage before leakage exceeds 1.0 μA |
| VC @ IPPM | 45.7 V at 8.8 A - peak clamped voltage during 10/1000 μs surge, limiting downstream IC stress |
| PPPM | 400 W - peak transient power handling capability under standard surge waveform |
| IFSM | 40 A - maximum non-repetitive forward surge current (8.3 ms half-sine), critical for inductive switch-off events |
| TJ max. | +175 °C - extended junction temperature rating enables operation in under-hood automotive environments |
| AEC-Q101 | Qualified - validated for automotive electronics per stress test requirements including HTOL, TCT, and ESD |
Pinout & Package
DO-41 (DO-204AL) molded epoxy package with axial leads; matte tin-plated terminals solderable per J-STD-002 and JESD 22-B102; color band denotes cathode end.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal | Connected to system ground or low-side return path in unidirectional TVS configurations |
| Cathode | Reverse-biased clamping terminal | Connected to protected line (e.g., 24 V rail or signal input); color band identifies this end |
Key Features
| Feature | Design Value |
|---|---|
| Glass passivated junction | Enables stable avalanche characteristics and long-term reliability under repeated surge stress |
| 400 W peak pulse power (10/1000 μs) | Provides robust protection against ISO 7637-2 Pulse 1/2a/3a and IEC 61000-4-5 Level 3 surges |
| AEC-Q101 qualification | Validates suitability for automotive powertrain, body control, and ADAS sensor interfaces |
| Low incremental surge resistance | Minimizes voltage overshoot during fast-rising transients, improving clamping precision |
| RoHS-compliant HE3 suffix | Indicates AEC-Q101 qualified grade with JESD 201 class 2 whisker resistance for high-reliability assembly |
Applications
| Automotive Power Line Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting 24 V supply rails in vehicle ECUs from load dump and inductive switching transients. IC Role / Device Role / Timing Role: Unidirectional TVS placed between battery rail and local regulator input to clamp surges before LDO or DC-DC stage. Use Value: Clamps 45.7 V at 8.8 A, preventing overvoltage damage to downstream PMICs and microcontrollers while meeting ISO 16750-2 requirements. | Use Scenario: Safeguarding analog inputs of industrial PLC analog I/O modules from field wiring transients. IC Role / Device Role / Timing Role: TVS connected across signal and ground on 4–20 mA or 0–10 V input channels to absorb induced surges. Use Value: 28.2 V standoff allows normal operation up to rated signal range; 45.7 V clamping prevents ADC saturation and front-end op-amp damage. |
| Consumer Power Adapter Input Protection | Telecom DC Feeder Line Protection |
Use Scenario: Secondary-side overvoltage suppression in AC/DC adapters for smart home devices. IC Role / Device Role / Timing Role: Unidirectional TVS on +5 V or +12 V output rail to suppress flyback spikes from transformer leakage inductance. Use Value: 400 W peak power rating handles repetitive switching surges; DO-41 package fits standard through-hole layouts without redesign. | Use Scenario: DC power feed lines in PoE-powered telecom equipment exposed to lightning-induced surges. IC Role / Device Role / Timing Role: TVS installed at DC input connector to clamp common-mode surges before DC-DC converter and Ethernet PHY. Use Value: AEC-Q101 qualification ensures long-term stability in outdoor cabinets; 175 °C TJ max supports operation near heat-generating RF components. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ33A | Surface-mount SMB package (vs. through-hole DO-41); same VBR range and 600 W PPPM | Requires PCB rework for SMT assembly; higher peak power but lower surge current rating (12.3 A vs. 8.8 A) | Select when board space is constrained and SMT process is established; verify thermal relief pad design for 600 W dissipation. |
| P6KE33A | Same DO-41 package but lower 600 W PPPM; VBR min/max identical (31.4–34.7 V); not AEC-Q101 qualified | Lacks automotive qualification; suitable for commercial/industrial use where AEC-Q101 is not mandated | Choose for cost-sensitive non-automotive designs requiring identical form factor and basic clamping performance. |
Compared with SMBJ33A and P6KE33A, the P4KE33AHE3/54 uniquely combines AEC-Q101 qualification, DO-41 through-hole compatibility, and verified 400 W surge handling-making it optimal for automotive and industrial replacements where legacy through-hole layout and automotive compliance are mandatory.
Availability
P4KE33AHE3/54 is available at Aetrix Electronics and suitable for automotive ECU power protection, industrial sensor interface hardening, and telecom DC feeder line surge suppression requiring stable component supply and long-lifecycle support.
Supply support for P4KE33AHE3/54 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 validation.
The P4KE series belongs to Vishay's TRANSZORB® TVS family, engineered specifically for robust transient suppression in harsh environments-including automotive, industrial, and telecom infrastructure-where consistent clamping and long-term stability under surge stress are critical.
FAQ
What is the clamping voltage of the P4KE33AHE3/54 under standard surge conditions?
The P4KE33AHE3/54 has a maximum clamping voltage (VC) of 45.7 V at 8.8 A peak pulse current (IPPM) using the industry-standard 10/1000 μs waveform. This value is measured per Figure 1 and Table 1 in Vishay Document 88365 and defines the upper voltage limit imposed on protected circuits during transient events. The P4KE33AHE3/54 maintains this clamping performance across its qualified operating temperature range.
Is the P4KE33AHE3/54 suitable for automotive applications?
Yes, the P4KE33AHE3/54 is AEC-Q101 qualified (per Note on page 3 of Vishay Document 88365), confirming its reliability for automotive use. Its DO-41 package, 175 °C maximum junction temperature, and validated surge performance make it appropriate for engine control units, body electronics, and ADAS sensor power rails. The HE3 suffix explicitly denotes AEC-Q101 qualification, distinguishing it from commercial-grade variants.
How does the P4KE33AHE3/54 differ from the P4KE33A-E3/54?
The P4KE33AHE3/54 carries the HE3 suffix indicating AEC-Q101 qualification and JESD 201 Class 2 whisker resistance, whereas the P4KE33A-E3/54 (E3 suffix) is RoHS-compliant but only commercial-grade qualified. Both share identical electrical specs (VBR, VWM, VC, PPPM) and DO-41 packaging, but only the P4KE33AHE3/54 meets automotive stress test requirements including temperature cycling and high-temperature operating life.
What is the standoff voltage rating for the P4KE33AHE3/54?
The P4KE33AHE3/54 has a maximum working peak reverse voltage (VWM) of 28.2 V, meaning it remains in high-impedance state with ≤1.0 μA leakage current up to this DC or RMS voltage level. This rating ensures compatibility with nominal 24 V systems while providing sufficient margin below the 31.4 V minimum breakdown voltage. The VWM is confirmed in the Electrical Characteristics table on page 2 of Vishay Document 88365.
Does the P4KE33AHE3/54 require heatsinking in typical applications?
No additional heatsinking is required for transient suppression duty cycles (e.g., single or infrequent surges), as the P4KE33AHE3/54 is rated for 400 W peak pulse power with 0.01% duty cycle. Its RθJL = 66 °C/W and RθJA = 100 °C/W values assume standard lead length (10 mm); sustained power dissipation is limited to 1.5 W (PD). For repetitive surge scenarios, thermal design must verify junction temperature stays ≤175 °C.
P4KE33AHE3/54 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):
- 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)
P4KE33AHE3/54 FAQ
1.How can I place an order for P4KE33AHE3/54 through Aetrix?
Please submit a Request for Quotation (RFQ) for P4KE33AHE3/54 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 P4KE33AHE3/54 reliable?
The price and inventory of P4KE33AHE3/54 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P4KE33AHE3/54 is usually 5 days.
3.What payment methods are accepted for P4KE33AHE3/54?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4KE33AHE3/54 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4KE33AHE3/54?
P4KE33AHE3/54 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4KE33AHE3/54 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 P4KE33AHE3/54?
For technical support, including P4KE33AHE3/54 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4KE33AHE3/54 requirements.
6.How does Aetrix verify that P4KE33AHE3/54 is sourced from the original manufacturer or authorized distributors?
All P4KE33AHE3/54 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 P4KE33AHE3/54 meets industry standards.
7.What is the process for return or replacement of P4KE33AHE3/54?
All P4KE33AHE3/54 units undergo pre-shipment inspection (PSI). If there is an issue with P4KE33AHE3/54, 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 P4KE33AHE3/54 part is unused and in its original packaging.
Return procedure for P4KE33AHE3/54:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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