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Vishay General Semiconductor - Diodes Division P4KE440CA-E3/54
- Part No.:
- P4KE440CA-E3/54
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-204AL, DO-41, Axial
- Datasheet:
-
P4KE440CA-E3/54.pdf
- Description:
- TVS DIODE 376VWM 602VC DO204AL
- Quantity:
- Payment:
- Shipping:
Inventory:9,578
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Product details
Overview
P4KE440CA-E3/54 from Vishay General Semiconductor is a bidirectional Transient Voltage Suppressor (TVS) diode in DO-41 package, designed for clamping voltage transients up to 602 V at 0.66 A peak pulse current, with 400 W peak pulse power (10/1000 μs), 376 V stand-off voltage, and ±175 °C operating junction temperature. It protects sensitive ICs and MOSFETs against inductive switching surges and lightning-induced transients in automotive and industrial power rails.
For engineers reviewing the P4KE440CA-E3/54 datasheet, P4KE440CA-E3/54 pinout, P4KE440CA-E3/54 application, or P4KE440CA-E3/54 equivalent, key selection criteria include bidirectional clamping capability, DO-41 mechanical compatibility, AEC-Q101 qualification status, 376 V working voltage margin, and thermal resistance of 100 °C/W (junction-to-ambient).
Technical Context
This device operates as a voltage-clamped surge protector using an avalanche breakdown mechanism, with symmetrical bidirectional conduction enabled by its CA suffix configuration. Its glass-passivated junction ensures stable breakdown characteristics and low incremental surge resistance under repetitive 10/1000 μs transients at 0.01% duty cycle.
Clamping occurs at 602 V when subjected to 0.66 A peak pulse current, with reverse leakage limited to 1.0 μA at 376 V stand-off voltage. Thermal performance is defined by RθJA = 100 °C/W and RθJL = 66 °C/W, supporting operation up to 175 °C junction temperature without derating at TL = 75 °C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 376 V - Maximum continuous reverse working voltage before clamping initiates; defines safe operating margin for 400 V DC rail protection. |
| VBR min/max | 418 V / 462 V at 1.0 mA - Confirmed breakdown voltage range ensures reliable triggering across production lot and temperature. |
| VC @ IPPM | 602 V - Clamped voltage during 0.66 A 10/1000 μs transient; determines maximum stress on downstream circuitry. |
| PPPM | 400 W - Peak pulse power handling capacity per single transient event; validated per Fig. 1 and REA-defined waveform. |
| IPPM | 0.66 A - Peak pulse current corresponding to 602 V clamping; used to size series impedance for energy absorption. |
| TJ max | +175 °C - Maximum junction temperature rating enables use in under-hood automotive environments without forced cooling. |
| RθJA | 100 °C/W - Junction-to-ambient thermal resistance with LLead = 10 mm; informs PCB copper area requirements for thermal management. |
Pinout & Package
DO-41 (DO-204AL) molded epoxy package with matte tin-plated leads; no polarity marking for bidirectional configuration; case meets UL 94 V-0 flammability rating.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (unmarked) | Bidirectional terminal pair | Identical conduction behavior in both directions; no cathode band; symmetric clamping response for AC or floating DC lines. |
Key Features
| Feature | Design Value |
|---|---|
| Glass passivated junction | Ensures stable VBR tolerance (±5%) and long-term reliability under thermal cycling and humidity exposure. |
| 400 W peak pulse power (10/1000 μs) | Validated for repetitive surge events at 0.01% duty cycle; supports protection in motor drive and relay control circuits. |
| AEC-Q101 qualified (HE3 variant only) | P4KE440CA-E3/54 is commercial grade; HE3 suffix required for automotive qualification - critical for supply chain traceability. |
| Low incremental surge resistance | Minimizes voltage overshoot during fast-rising transients (<1 ns response), improving protection fidelity for high-speed interfaces. |
| RoHS-compliant, JESD 201 Class 1A whisker tested | E3 suffix confirms lead-free matte tin plating compliant with J-STD-002 solderability and whisker mitigation standards. |
Applications
| Automotive Power Rail Protection | Industrial Sensor Signal Line Guarding |
|---|---|
Use Scenario: Protecting 12 V/24 V battery-fed ECUs and body control modules from load dump and alternator ripple. IC Role / Device Role / Timing Role: Bidirectional voltage clamp placed across power input pins to limit transients to ≤602 V during ISO 7637-2 Pulse 5a events. Use Value: Enables compliance with automotive EMC immunity requirements while maintaining 376 V working margin for nominal 24 V systems. |
Use Scenario: Shielding analog output lines (e.g., 4–20 mA current loops) in factory automation sensors from ESD and inductive coupling. IC Role / Device Role / Timing Role: Low-capacitance TVS placed differential-mode across signal pair to suppress sub-μs transients without distorting low-bandwidth analog signals. Use Value: Prevents latch-up or damage to precision op-amps and ADC front-ends while adding <1 pF parasitic capacitance at 1 MHz. |
| Telecom DC Power Input Stage | Consumer Appliance Motor Drive Snubbing |
Use Scenario: Safeguarding PoE-powered equipment (e.g., IP cameras) against lightning-induced surges on 48 V DC input lines. IC Role / Device Role / Timing Role: Primary-level TVS mounted at connector entry point to shunt common-mode surges before DC/DC converter input stage. Use Value: Absorbs 400 W pulses without degradation, preserving upstream fuse coordination and enabling UL 60950-1 compliance. |
Use Scenario: Suppressing commutation spikes from brushed DC motors in home appliances (e.g., washing machine drum drives). IC Role / Device Role / Timing Role: Bidirectional clamp across motor terminals to limit flyback voltage to 602 V during MOSFET turn-off. Use Value: Eliminates need for external RC snubbers, reducing BOM count and board space while sustaining 175 °C junction temperature during burst-mode operation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ400CA | DO-214AA package; 400 W rating; 400 V VWM; lower RθJA (50 °C/W); higher IPPM (1.0 A) | Surface-mount alternative with superior thermal performance but requires rework of through-hole footprint | Select SMBJ400CA when board space is constrained and thermal management via PCB copper is prioritized over legacy through-hole assembly. |
| P4KE400CA-E3/54 | Same DO-41 package; 342 V VWM; 548 V VC; 0.73 A IPPM; 400 W rating | Narrower clamping window (548 V vs. 602 V) suits 350 V nominal systems where tighter overvoltage control is required | Choose P4KE400CA-E3/54 for 350 V DC bus protection where lower clamping voltage reduces stress on downstream capacitors and regulators. |
Compared with P4KE440CA-E3/54, SMBJ400CA offers better thermal efficiency and SMT compatibility but mandates PCB redesign, while P4KE400CA-E3/54 retains identical packaging and process flow but trades clamping voltage for tighter VWM margin in lower-voltage systems.
Availability
P4KE440CA-E3/54 is available at Aetrix Electronics and suitable for automotive power rail protection, industrial sensor guarding, telecom DC input staging, and consumer appliance motor drive snubbing requiring stable component supply and RoHS-compliant sourcing.
Supply support for P4KE440CA-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, AEC-Q qualification, and industrial-grade robustness.
The P4KE series targets cost-sensitive, high-volume transient suppression applications in automotive, industrial, and telecom infrastructure, delivering standardized DO-41 TVS performance with verified surge endurance and thermal stability.
FAQ
What is the clamping voltage of the P4KE440CA-E3/54 under maximum rated surge current?
The P4KE440CA-E3/54 clamps to 602 V when subjected to its rated peak pulse current of 0.66 A under the standard 10/1000 μs waveform. This value is measured per Figure 1 and Table on page 2 of Vishay document 88365 and defines the upper voltage limit imposed on protected circuitry during transient events.
Is the P4KE440CA-E3/54 suitable for automotive applications requiring AEC-Q101 qualification?
The P4KE440CA-E3/54 is RoHS-compliant and manufactured to commercial-grade specifications. For AEC-Q101 qualification, the HE3 suffix variant (e.g., P4KE440CAHE3/54) must be selected - the E3 suffix alone does not confer automotive qualification, as confirmed in the Mechanical Data section of document 88365.
How does the bidirectional configuration of the P4KE440CA-E3/54 affect its mounting and testing?
The P4KE440CA-E3/54 has no polarity marking and functions identically in both directions, eliminating orientation concerns during through-hole insertion and simplifying automated optical inspection. Electrical testing requires verification of symmetrical VBR and VC in both polarities, as specified in the Electrical Characteristics table on page 2 of document 88365.
What is the thermal resistance profile of the P4KE440CA-E3/54, and how does it impact PCB layout?
The P4KE440CA-E3/54 exhibits RθJA = 100 °C/W (junction-to-ambient) and RθJL = 66 °C/W (junction-to-lead), measured with 10 mm lead length. To maintain TJ ≤ 175 °C under full 400 W pulse loading, PCB copper land area and via count must be optimized - refer to Figure 5 (Power Derating Curve) in document 88365 for ambient temperature derating guidance.
Can the P4KE440CA-E3/54 be used in AC line protection applications?
Yes - the bidirectional nature and 376 V VWM make the P4KE440CA-E3/54 suitable for protecting AC mains-derived 230 V RMS circuits (peak ≈ 325 V), providing ≥50 V margin before clamping. Its 10/1000 μs waveform rating aligns with IEC 61000-4-5 surge test requirements for secondary-side AC-DC converter inputs.
P4KE440CA-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):
- 376V
- Voltage - Breakdown (Min):
- 418V
- Voltage - Clamping (Max) @ Ipp:
- 602V
- Current - Peak Pulse (10/1000µs):
- 660mA
- 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)
P4KE440CA-E3/54 FAQ
1.How can I place an order for P4KE440CA-E3/54 through Aetrix?
Please submit a Request for Quotation (RFQ) for P4KE440CA-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 P4KE440CA-E3/54 reliable?
The price and inventory of P4KE440CA-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 P4KE440CA-E3/54 is usually 5 days.
3.What payment methods are accepted for P4KE440CA-E3/54?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4KE440CA-E3/54 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4KE440CA-E3/54?
P4KE440CA-E3/54 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4KE440CA-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 P4KE440CA-E3/54?
For technical support, including P4KE440CA-E3/54 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4KE440CA-E3/54 requirements.
6.How does Aetrix verify that P4KE440CA-E3/54 is sourced from the original manufacturer or authorized distributors?
All P4KE440CA-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 P4KE440CA-E3/54 meets industry standards.
7.What is the process for return or replacement of P4KE440CA-E3/54?
All P4KE440CA-E3/54 units undergo pre-shipment inspection (PSI). If there is an issue with P4KE440CA-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 P4KE440CA-E3/54 part is unused and in its original packaging.
Return procedure for P4KE440CA-E3/54:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P4KE440CA-E3/54 Tags
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