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Vishay General Semiconductor - Diodes Division P4KE33A-E3/54
- Part No.:
- P4KE33A-E3/54
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-204AL, DO-41, Axial
- Datasheet:
-
P4KE33A-E3/54.pdf
- Description:
- TVS DIODE 28.2VWM 45.7VC DO204AL
- Quantity:
- Payment:
- Shipping:
Inventory:7,489
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Product details
Overview
P4KE33A-E3/54 from Vishay General Semiconductor is a unidirectional Transient Voltage Suppressor (TVS) diode in DO-41 package, designed to clamp voltage transients up to 45.7 V at 8.8 A peak pulse current with 400 W peak pulse power (10/1000 μs waveform), used for protecting MOSFETs and ICs against inductive switching surges in automotive and industrial power supplies.
For engineers reviewing the P4KE33A-E3/54 datasheet, P4KE33A-E3/54 pinout, P4KE33A-E3/54 application, or P4KE33A-E3/54 equivalent, key selection criteria include standoff voltage (28.2 V), clamping voltage (45.7 V), unidirectional polarity, AEC-Q101 qualification status, and DO-41 mechanical compatibility with through-hole PCB layouts.
Technical Context
This TVS diode operates as a voltage-clamping protection device in series with sensitive downstream circuitry, triggering conduction when reverse voltage exceeds its 31.4–34.7 V breakdown range at 1 mA test current. Its glass-passivated junction ensures stable leakage (<1.0 μA at 28.2 V) and fast response time under transient stress.
It delivers 400 W peak pulse power handling per 10/1000 μs waveform with 0.01% duty cycle, supported by thermal resistance of 66 °C/W (junction-to-lead) and 100 °C/W (junction-to-ambient), enabling reliable operation up to 175 °C junction temperature in constrained thermal environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Stand-off Voltage (VWM) | 28.2 V - Maximum continuous reverse operating voltage before clamping begins |
| Breakdown Voltage (VBR) | 31.4–34.7 V at 1 mA - Confirmed conduction onset threshold for overvoltage protection |
| Clamping Voltage (VC) | 45.7 V at 8.8 A IPPM - Peak voltage seen by protected circuit during 10/1000 μs surge |
| Peak Pulse Power (PPPM) | 400 W - Sustained transient energy absorption capability without failure |
| Peak Pulse Current (IPPM) | 8.8 A - Maximum surge current handled at rated clamping voltage |
| Junction Temperature Range | −55 °C to +175 °C - Validated operating envelope for under-hood and industrial environments |
| Leakage Current (ID) | ≤1.0 μA at VWM - Minimal power loss and signal interference in standby state |
Pinout & Package
DO-41 (DO-204AL) molded epoxy package with axial leads; cathode indicated by color band on body; matte tin-plated leads compliant with J-STD-002 and JESD 22-B102 solderability standards.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (banded end) | Ground reference terminal | Connected to system ground or low-side return path for unidirectional clamping |
| Cathode (non-banded end) | Protected line input | Connected to supply rail or signal line requiring transient suppression |
Key Features
| Feature | Design Value |
|---|---|
| Glass passivated junction | Ensures stable VBR tolerance and long-term reliability under thermal cycling and humidity exposure |
| 400 W peak pulse power (10/1000 μs) | Protects against high-energy transients from relay coil decay or motor commutation in 12 V/24 V systems |
| AEC-Q101 qualified (E3 suffix variant) | Validated for automotive-grade deployment including engine control units and body electronics |
| Low incremental surge resistance | Minimizes voltage overshoot during fast-rising transients (e.g., ISO 7637-2 Pulse 1/2a/5a) |
| UL 94 V-0 molding compound | Meets flammability safety requirements for enclosed industrial and automotive enclosures |
Applications
| Automotive Power Supply Protection | Industrial PLC Input Protection |
|---|---|
Use Scenario: Protecting 12 V battery-fed microcontroller power rails from load dump and alternator ripple transients. IC Role / Device Role / Timing Role: Unidirectional TVS placed between VCC and GND to clamp negative-going spikes and positive surges above 28.2 V. Use Value: Limits voltage to ≤45.7 V during 400 W transients, preventing latch-up or gate oxide damage in MCU and CAN transceivers. |
Use Scenario: Shielding digital input terminals of programmable logic controllers from field-wiring induced surges. IC Role / Device Role / Timing Role: Series-connected TVS on dry-contact or 24 V DC input lines to suppress ESD and inductive kickback. Use Value: Withstands repetitive 8.8 A pulses while maintaining <1.0 μA leakage, preserving input logic thresholds and reducing false triggering. |
| Consumer Appliance Motor Control | Telecom Power Interface |
Use Scenario: Safeguarding H-bridge driver ICs in washing machine motor inverters against back-EMF from brushed DC motors. IC Role / Device Role / Timing Role: Bidirectional clamping not applicable; unidirectional P4KE33A-E3/54 used across supply rail to absorb flyback energy. Use Value: Clamps 31.4–34.7 V breakdown with 0.098 %/°C tempco, ensuring stable protection margin across −40 °C to +85 °C ambient. |
Use Scenario: Front-end surge protection on 48 V PoE-powered telecom equipment power inputs. IC Role / Device Role / Timing Role: Primary overvoltage clamp on DC feed prior to DC/DC converter, coordinated with upstream MOVs. Use Value: 45.7 V clamping voltage aligns with 48 V nominal input derating, allowing safe operation within 10 % overvoltage window. |
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 | DO-214AA package, 600 W PPPM, lower clamping voltage (53.3 V at 7.5 A), higher IFSM (100 A) | Suitable for surface-mount designs with tighter board space; requires rework of footprint and thermal relief | Select when higher surge rating and SMT assembly are prioritized over through-hole legacy compatibility |
| 1.5KE33A | Same DO-41 package but 1500 W PPPM, higher clamping (53.3 V at 28.2 A), larger junction capacitance | Better suited for high-energy lightning-induced surges; over-spec'd for typical automotive load dump | Choose only if system-level testing confirms need for >400 W rating; otherwise P4KE33A-E3/54 offers optimal cost/performance balance |
Compared with SMBJ33A and 1.5KE33A, P4KE33A-E3/54 provides precise 400 W surge handling in a proven DO-41 through-hole format with AEC-Q101 qualification, making it ideal for cost-sensitive, thermally constrained, and automotive-compliant designs where 8.8 A peak current suffices.
Availability
P4KE33A-E3/54 is available at Aetrix Electronics and suitable for automotive power management, industrial PLC input stages, and consumer appliance motor drive circuits requiring stable component supply and long-lifecycle support.
Supply support for P4KE33A-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, and protection devices with emphasis on reliability and automotive qualification.
The P4KE33A-E3/54 belongs to Vishay's TRANSZORB® TVS family, engineered specifically for robust, standardized transient suppression in harsh electrical environments across transportation and industrial markets.
FAQ
What is the breakdown voltage range of the P4KE33A-E3/54?
The P4KE33A-E3/54 has a guaranteed breakdown voltage (VBR) range of 31.4 V to 34.7 V at 1 mA test current, measured per ANSI/IEEE C62.35 standards. This range ensures consistent clamping behavior across production lots and supports design margining for 28.2 V stand-off applications. The P4KE33A-E3/54 maintains this specification across its full operating temperature range.
Is the P4KE33A-E3/54 suitable for automotive applications?
Yes, the P4KE33A-E3/54 is AEC-Q101 qualified when ordered with the HE3 suffix (P4KE33AHE3/54); however, the E3 suffix version (P4KE33A-E3/54) is commercial grade and not AEC-Q101 certified. For automotive use, confirm ordering code and qualification status directly with Vishay documentation-P4KE33A-E3/54 itself meets all electrical specs but lacks formal automotive qualification.
What does the "-E3/54" suffix indicate in P4KE33A-E3/54?
The "-E3" denotes RoHS-compliant, commercial-grade construction with JESD 201 Class 1A whisker resistance; "/54" specifies the preferred package code for 13-inch paper tape and reel packaging containing 5500 units. This ordering format ensures traceable, automated assembly-ready delivery of the P4KE33A-E3/54 without lead finish or environmental compliance ambiguity.
How does the clamping voltage of P4KE33A-E3/54 compare to its breakdown voltage?
The P4KE33A-E3/54 clamps at 45.7 V when subjected to its rated 8.8 A peak pulse current (10/1000 μs waveform), which is approximately 32–45 % above its minimum breakdown voltage of 31.4 V. This differential reflects the device's incremental surge resistance and ensures protected circuits remain below critical voltage thresholds during transient events.
Can P4KE33A-E3/54 be used in bidirectional configurations?
No-P4KE33A-E3/54 is strictly unidirectional, identified by a cathode band on the DO-41 body. Bidirectional variants require the "CA" suffix (e.g., P4KE33CA). Using P4KE33A-E3/54 in reverse-biased AC signal paths would result in forward conduction and failure; always verify polarity alignment in-circuit to ensure correct P4KE33A-E3/54 orientation.
P4KE33A-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:
- 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:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 175°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- DO-204AL (DO-41)
P4KE33A-E3/54 FAQ
1.How can I place an order for P4KE33A-E3/54 through Aetrix?
Please submit a Request for Quotation (RFQ) for P4KE33A-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 P4KE33A-E3/54 reliable?
The price and inventory of P4KE33A-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 P4KE33A-E3/54 is usually 5 days.
3.What payment methods are accepted for P4KE33A-E3/54?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4KE33A-E3/54 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4KE33A-E3/54?
P4KE33A-E3/54 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4KE33A-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 P4KE33A-E3/54?
For technical support, including P4KE33A-E3/54 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4KE33A-E3/54 requirements.
6.How does Aetrix verify that P4KE33A-E3/54 is sourced from the original manufacturer or authorized distributors?
All P4KE33A-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 P4KE33A-E3/54 meets industry standards.
7.What is the process for return or replacement of P4KE33A-E3/54?
All P4KE33A-E3/54 units undergo pre-shipment inspection (PSI). If there is an issue with P4KE33A-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 P4KE33A-E3/54 part is unused and in its original packaging.
Return procedure for P4KE33A-E3/54:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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