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Vishay General Semiconductor - Diodes Division P4KE33CHE3/54
- Part No.:
- P4KE33CHE3/54
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-204AL, DO-41, Axial
- Datasheet:
-
P4KE33CHE3/54.pdf
- Description:
- TVS DIODE 26.8VWM 47.7VC DO204AL
- Quantity:
- Payment:
- Shipping:
Inventory:5,567
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Product details
Overview
P4KE33CHE3/54 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 31.4 V minimum and 34.7 V maximum breakdown voltage at 1.0 mA test current, 28.2 V standoff voltage, 1.0 μA max reverse leakage, 8.8 A peak pulse current (10/1000 μs), and 45.7 V clamping voltage at rated IPPM - deployed in automotive sensor protection and industrial I/O interfaces.
For engineers reviewing the P4KE33CHE3/54 datasheet, P4KE33CHE3/54 pinout, P4KE33CHE3/54 application, or P4KE33CHE3/54 equivalent, key selection criteria include bidirectional clamping capability, AEC-Q101 qualification, DO-41 mechanical compatibility, 400 W peak pulse power rating, and thermal resistance (RθJL = 66 °C/W) for transient energy dissipation in space-constrained PCB layouts.
Technical Context
This device operates as a voltage-clamped surge protector with symmetrical bidirectional conduction - no polarity marking required. Its glass-passivated junction enables fast response (<1 ns) to ESD and lightning-induced transients, while maintaining low incremental surge resistance for stable clamping under repetitive 0.01% duty cycle pulses.
The P4KE33CHE3/54 is rated for 175 °C maximum junction temperature and supports soldering up to 275 °C for 10 s (JESD 22-B106). Its thermal resistance (RθJA = 100 °C/W, RθJL = 66 °C/W) and 1.5 W steady-state power dissipation define safe operating limits under sustained leakage or low-duty-cycle surge conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Breakdown Voltage VBR | 31.4 V min / 34.7 V max at 1.0 mA - defines precise clamping initiation threshold for overvoltage events |
| Standoff Voltage VWM | 28.2 V - maximum continuous working voltage before significant leakage begins |
| Clamping Voltage VC | 45.7 V at 8.8 A IPPM (10/1000 μs) - actual voltage seen by protected circuit during worst-case surge |
| Peak Pulse Power PPPM | 400 W - energy-handling capacity for transient suppression without failure |
| Reverse Leakage ID | 1.0 μA max at VWM - ensures minimal standby power loss and signal integrity in high-impedance circuits |
| Junction Temperature Range | –55 °C to +175 °C - supports operation in under-hood automotive and industrial environments |
| AEC-Q101 Qualified | Yes - validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing |
Pinout & Package
DO-41 (DO-204AL) molded epoxy package with matte tin-plated leads; no polarity marking for bidirectional operation; case meets UL 94 V-0 flammability rating.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (symmetrical) | Bidirectional avalanche junction | Either lead serves as input/output terminal - no cathode band; identical clamping in both directions |
| Lead 1 / Lead 2 | Current path terminals | Direct connection to PCB traces; thermal path to board copper via leads (RθJL = 66 °C/W) |
Key Features
| Feature | Design Value |
|---|---|
| Glass passivated chip junction | Enables <1 ns response time and stable VBR over lifetime, critical for ESD and fast-switching transient suppression |
| 400 W peak pulse power (10/1000 μs) | Handles typical ISO 7637-2 pulse 1/2/5a surges without degradation in automotive power line protection |
| AEC-Q101 qualification | Validated for automotive applications including engine control units, body electronics, and ADAS sensor interfaces |
| Low incremental surge resistance | Minimizes voltage overshoot during high-current transients, improving clamping accuracy and system robustness |
| RoHS-compliant HE3 suffix | Meets JESD 201 Class 2 whisker resistance - suitable for high-reliability industrial and automotive assembly processes |
Applications
| Automotive Sensor Protection | Industrial I/O Interface |
|---|---|
|
Use Scenario: Protecting CAN/LIN bus transceivers and analog sensor inputs (e.g., pressure, temperature) from load dump and ESD in vehicle ECUs. IC Role / Device Role / Timing Role: Bidirectional clamping element placed between signal line and ground, absorbing transients before they reach sensitive IC inputs. Use Value: Maintains signal integrity under ISO 16750-2 load dump (up to 120 V) and IEC 61000-4-2 ESD (±15 kV air), enabled by 45.7 V clamping and AEC-Q101 qualification. |
Use Scenario: Safeguarding PLC digital input modules against inductive kickback from solenoids, relays, and motor drivers. IC Role / Device Role / Timing Role: Standoff voltage (28.2 V) allows normal 24 V DC operation while clamping >45 V surges to protect downstream logic and isolation barriers. Use Value: Prevents false triggering and latch-up in microcontroller GPIOs using 1.0 μA leakage and 400 W pulse handling - compatible with DIN rail mounting constraints. |
| Telecom Line Protection | Consumer Power Adapter Input |
|
Use Scenario: Secondary-side surge protection on Ethernet PHY power rails and RS-485 data lines in base station equipment. IC Role / Device Role / Timing Role: Fast-response TVS placed across VCC/GND near PHY ICs to suppress coupling from nearby AC/DC converters or lightning-induced surges. Use Value: 31.4–34.7 V VBR range aligns with 3.3 V/5 V/12 V supply domains; 66 °C/W RθJL enables effective heat transfer to PCB copper in dense telecom modules. |
Use Scenario: Input-stage transient suppression in wall-mounted AC/DC adapters for smart home devices and IoT hubs. IC Role / Device Role / Timing Role: Primary clamping device across bulk capacitor terminals to absorb differential-mode surges from mains transients per IEC 61000-4-5. Use Value: 400 W PPPM and DO-41 footprint allow cost-effective integration without redesign; HE3 suffix ensures long-term whisker resistance in consumer manufacturing. |
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, lower RθJA (50 °C/W), higher capacitance (~150 pF) | Better suited for higher-power, lower-impedance PCB layouts; less ideal for ultra-high-speed signal lines due to higher CJ | Select SMBJ33CA when higher surge margin or improved thermal performance on large copper pours is required |
| 1.5KE33CA | DO-201AE package, 1500 W PPPM, larger footprint, higher VF (5.0 V), same VBR range | Targeted at main power rail protection where board space permits; not AEC-Q101 qualified | Choose 1.5KE33CA for non-automotive primary-side surge suppression requiring >400 W capability |
Compared with P4KE33CHE3/54, SMBJ33CA offers higher power and better thermal dissipation but larger capacitance, while 1.5KE33CA delivers triple the pulse power in a non-automotive-qualified package - making P4KE33CHE3/54 optimal for space-constrained, AEC-Q101–mandated bidirectional protection.
Availability
P4KE33CHE3/54 is available at Aetrix Electronics and suitable for automotive sensor protection, industrial I/O interface hardening, and telecom line surge suppression requiring stable component supply across production lifecycles.
Supply support for P4KE33CHE3/54 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 qualification.
The P4KE33CHE3/54 belongs to Vishay's TRANSZORB® TVS family, engineered specifically for robust, bidirectional transient suppression in harsh environments - including under-hood automotive, factory automation, and infrastructure communications.
FAQ
What does the "HE3" suffix indicate in P4KE33CHE3/54?
The HE3 suffix denotes RoHS-compliant construction with AEC-Q101 qualification and JESD 201 Class 2 whisker resistance. This means P4KE33CHE3/54 is approved for automotive use and withstands tin whisker formation under thermal stress - a critical requirement for long-life ECU designs where P4KE33CHE3/54 is deployed in safety-critical sensor paths.
Is P4KE33CHE3/54 unidirectional or bidirectional?
P4KE33CHE3/54 is a bidirectional TVS diode, confirmed by the "CA" designation in its full family name (P4KE33CA) and absence of cathode band marking. It provides symmetrical clamping above ±31.4 V in either direction - essential for protecting AC-coupled lines, differential buses like RS-485, or dual-rail sensor outputs where polarity reversal may occur.
What is the clamping voltage of P4KE33CHE3/54 at rated surge current?
The clamping voltage (VC) of P4KE33CHE3/54 is 45.7 V at 8.8 A peak pulse current (IPPM) under the standard 10/1000 μs waveform. This value represents the maximum voltage imposed on the protected circuit during a defined transient event - a key parameter used to verify that downstream ICs (e.g., MCU GPIOs or transceivers) remain within absolute maximum ratings when P4KE33CHE3/54 is active.
Can P4KE33CHE3/54 replace P4KE33A in an existing design?
No - P4KE33CHE3/54 is bidirectional (P4KE33CA), whereas P4KE33A is unidirectional. Substituting them requires verifying circuit polarity and clamping behavior: P4KE33A clamps only in reverse bias, while P4KE33CHE3/54 clamps in both directions. Using P4KE33CHE3/54 in place of P4KE33A may cause unintended forward conduction or fail to protect correctly in DC-biased applications.
What packaging format is supplied for P4KE33CHE3/54?
P4KE33CHE3/54 is supplied in 13-inch diameter paper tape and reel, with a base quantity of 5500 units per reel (package code "54"). This format supports automated SMT placement via pick-and-place machines - consistent with industry-standard DO-41 handling, and verified for compatibility with Vishay's recommended solder profile (275 °C max for 10 s).
P4KE33CHE3/54 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:
- Obsolete
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 26.8V
- Voltage - Breakdown (Min):
- 29.7V
- Voltage - Clamping (Max) @ Ipp:
- 47.7V
- Current - Peak Pulse (10/1000µs):
- 8.4A
- 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)
P4KE33CHE3/54 FAQ
1.How can I place an order for P4KE33CHE3/54 through Aetrix?
Please submit a Request for Quotation (RFQ) for P4KE33CHE3/54 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 P4KE33CHE3/54 reliable?
The price and inventory of P4KE33CHE3/54 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P4KE33CHE3/54 is usually 5 days.
3.What payment methods are accepted for P4KE33CHE3/54?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4KE33CHE3/54 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4KE33CHE3/54?
P4KE33CHE3/54 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4KE33CHE3/54 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 P4KE33CHE3/54?
For technical support, including P4KE33CHE3/54 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4KE33CHE3/54 requirements.
6.How does Aetrix verify that P4KE33CHE3/54 is sourced from the original manufacturer or authorized distributors?
All P4KE33CHE3/54 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 P4KE33CHE3/54 meets industry standards.
7.What is the process for return or replacement of P4KE33CHE3/54?
All P4KE33CHE3/54 units undergo pre-shipment inspection (PSI). If there is an issue with P4KE33CHE3/54, 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 P4KE33CHE3/54 part is unused and in its original packaging.
Return procedure for P4KE33CHE3/54:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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