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Vishay General Semiconductor - Diodes Division P4KE91CA-E3/54
- Part No.:
- P4KE91CA-E3/54
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-204AL, DO-41, Axial
- Datasheet:
-
P4KE91CA-E3/54.pdf
- Description:
- TVS DIODE 77.8VWM 125VC DO204AL
- Quantity:
- Payment:
- Shipping:
Inventory:2,027
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Product details
Overview
P4KE91CA-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 91 V breakdown voltage (VBR min/max = 86.5 V / 95.5 V at 1.0 mA), 77.8 V standoff voltage (VWM), 125 A peak pulse current (IPPM), and 400 W peak pulse power (10/1000 μs waveform). It is used to protect MOSFETs, ICs, and sensor signal lines in automotive and industrial control systems.
For engineers reviewing the P4KE91CA-E3/54 datasheet, P4KE91CA-E3/54 pinout, P4KE91CA-E3/54 application, or P4KE91CA-E3/54 equivalent, key selection criteria include bidirectional clamping capability, DO-41 mechanical compatibility, 175 °C maximum junction temperature, low leakage (<1.0 μA at VWM), and AEC-Q101 qualification for automotive-grade reliability.
Technical Context
This device operates as a voltage-clamping protector with symmetrical avalanche behavior in both polarities due to its bidirectional construction. Its glass-passivated junction enables fast response time (<1.0 ns) and low incremental surge resistance, critical for suppressing ESD and inductive switching transients.
The P4KE91CA-E3/54 delivers 400 W peak pulse power under standardized 10/1000 μs waveform conditions at 0.01 % duty cycle, with thermal resistance of 66 °C/W (junction-to-lead) and 100 °C/W (junction-to-ambient, LLead = 10 mm), enabling reliable operation up to 175 °C junction temperature.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 86.5 V / 95.5 V at 1.0 mA - defines clamping onset threshold with tight 10.4 % tolerance |
| VWM | 77.8 V - maximum continuous reverse operating voltage before leakage exceeds 1.0 μA |
| VC @ IPPM | 125 V - clamped voltage during 125 A transient, limiting downstream stress to safe levels |
| IPPM | 125 A - peak surge current it safely diverts without failure under 10/1000 μs waveform |
| PPPM | 400 W - transient energy handling capacity compatible with IEC 61000-4-5 Level 4 requirements |
| TJ max | 175 °C - supports high-temperature environments including engine bay and power supply sections |
| Package | DO-41 (DO-204AL) - industry-standard axial leaded package with UL 94 V-0 molded epoxy body |
Pinout & Package
DO-41 (DO-204AL) package: axial-leaded, glass-passivated silicon junction in molded epoxy case. Dimensions: 25.4 mm overall length min., 5.2 mm body diameter, 0.86 mm lead diameter. No polarity marking - bidirectional symmetry eliminates cathode/anode orientation concerns.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (symmetrical) | Transient current path | Both terminals function identically; no directional installation required - simplifies PCB layout and assembly |
| Leads (matte tin plated) | Thermal and electrical interface | Solderable per J-STD-002/JESD 22-B102; withstands 275 °C dip soldering for 10 s |
Key Features
| Feature | Design Value |
|---|---|
| Glass passivated chip junction | Enables stable, repeatable avalanche characteristics and long-term reliability under repetitive surges |
| 400 W peak pulse power (10/1000 μs) | Meets IEC 61000-4-5 surge immunity requirements for industrial and automotive applications |
| AEC-Q101 qualified | Validated for automotive electronics use including engine control units and body modules |
| Low leakage (<1.0 μA at VWM) | Minimizes standby power loss and avoids false triggering in high-impedance sensing circuits |
| UL 94 V-0 flammability rating | Molding compound resists ignition and flame propagation under fault conditions |
Applications
| Automotive Power Line Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting 12 V/24 V power rails in engine control units against load dump and alternator transients. IC Role / Device Role / Timing Role: Bidirectional voltage clamp placed across input rail to shunt surge energy to ground before reaching downstream regulators and microcontrollers. Use Value: Withstands 125 A surges while clamping to 125 V, preventing damage to 36 V-rated DC/DC converters and ensuring ASIL-B system continuity. | Use Scenario: Safeguarding analog outputs of pressure/temperature sensors connected to PLC analog input modules. IC Role / Device Role / Timing Role: TVS placed differential-mode across signal pair to suppress EFT bursts and inductive kickback from nearby solenoids. Use Value: Sub-1 ns response ensures clamping occurs before sensitive op-amp inputs exceed absolute maximum ratings, preserving measurement integrity. |
| Consumer Device USB Port Protection | Telecom Base Station DC Feeder Protection |
Use Scenario: Adding secondary overvoltage protection on USB VBUS lines in set-top boxes exposed to hot-plug and cable-induced transients. IC Role / Device Role / Timing Role: Standoff voltage (77.8 V) exceeds normal VBUS range (4.75–5.25 V) while clamping fast spikes before they reach USB controller ICs. Use Value: Low 1.0 μA leakage avoids loading the 5 V rail; DO-41 footprint allows easy integration into existing board layouts without redesign. | Use Scenario: Protecting -48 V DC feeder lines in 4G/5G remote radio units from lightning-induced surges entering via outdoor cabling. IC Role / Device Role / Timing Role: Bidirectional TVS installed between feed line and chassis ground to divert common-mode surges exceeding ±100 V. Use Value: 400 W rating handles multi-kA induced currents; 175 °C rating ensures survival in sealed outdoor enclosures with elevated ambient temperatures. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ90CA | Surface-mount SMB package; same 90 V VBR, 125 V VC, but lower 600 W PPPM rating | Designed for automated SMT assembly; unsuitable for through-hole legacy designs | Select when board space is constrained and reflow compatibility is required |
| 1.5KE91CA | Same DO-41 package and 91 V VBR, but higher 1500 W PPPM and 143 A IPPM; larger junction area | Better suited for high-energy transients like lightning surges where 400 W is marginal | Select when system-level surge testing exceeds IEC 61000-4-5 Level 4 |
Compared with SMBJ90CA and 1.5KE91CA, the P4KE91CA-E3/54 offers optimal balance of through-hole manufacturability, AEC-Q101 qualification, and 400 W surge handling - making it ideal for cost-sensitive automotive and industrial designs where moderate transient energy dominates.
Availability
P4KE91CA-E3/54 is available at Aetrix Electronics and suitable for automotive power rail protection, industrial sensor interface hardening, and telecom DC feeder safeguarding requiring stable component supply across extended production lifecycles.
Supply support for P4KE91CA-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, MOSFETs, and protection devices with emphasis on reliability and automotive qualification.
The P4KE91CA-E3/54 belongs to Vishay's TRANSZORB® TVS family, engineered specifically for robust, cost-effective transient suppression in harsh environments including engine compartments and factory floors.
FAQ
What does the "CA" suffix indicate in P4KE91CA-E3/54?
The "CA" suffix in P4KE91CA-E3/54 denotes a bidirectional configuration, meaning the device provides symmetrical clamping in both forward and reverse directions. Unlike unidirectional variants (e.g., P4KE91A), it has no polarity marking and functions identically regardless of voltage polarity - essential for AC-coupled or floating signal line protection where transient direction is unpredictable.
Is P4KE91CA-E3/54 qualified for automotive applications?
Yes, P4KE91CA-E3/54 is AEC-Q101 qualified, as confirmed in the Vishay datasheet revision 16-Sep-2021 (Document Number: 88365). This qualification validates its reliability under automotive temperature cycling, humidity, mechanical shock, and surge stress conditions - making it suitable for use in engine control units, body electronics, and infotainment power supplies.
What is the maximum clamping voltage of P4KE91CA-E3/54 under surge conditions?
The maximum clamping voltage (VC) of P4KE91CA-E3/54 is 125 V at its rated peak pulse current (IPPM) of 125 A, measured using the standard 10/1000 μs waveform. This value is guaranteed across the full operating temperature range and ensures downstream components see no more than 125 V during transient events, supporting design margin for 100 V-rated circuitry.
Can P4KE91CA-E3/54 replace P4KE91A in an existing design?
No - P4KE91CA-E3/54 cannot directly replace unidirectional P4KE91A without circuit review. While both share identical VBR and VWM, the CA version lacks polarity marking and conducts in both directions, which may cause unintended conduction in DC-biased circuits. Replacement requires verifying that the protected node is either AC-coupled or truly floating, and confirming no forward-bias leakage path exists.
What is the thermal resistance specification for P4KE91CA-E3/54?
P4KE91CA-E3/54 has a typical junction-to-lead thermal resistance (RθJL) of 66 °C/W and junction-to-ambient resistance (RθJA) of 100 °C/W (with 10 mm lead length). These values enable accurate thermal modeling for power dissipation during repetitive surges and confirm suitability for operation up to 175 °C junction temperature when mounted per JEDEC standards.
P4KE91CA-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):
- 77.8V
- Voltage - Breakdown (Min):
- 86.5V
- Voltage - Clamping (Max) @ Ipp:
- 125V
- Current - Peak Pulse (10/1000µs):
- 3.2A
- 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)
P4KE91CA-E3/54 FAQ
1.How can I place an order for P4KE91CA-E3/54 through Aetrix?
Please submit a Request for Quotation (RFQ) for P4KE91CA-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 P4KE91CA-E3/54 reliable?
The price and inventory of P4KE91CA-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 P4KE91CA-E3/54 is usually 5 days.
3.What payment methods are accepted for P4KE91CA-E3/54?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4KE91CA-E3/54 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4KE91CA-E3/54?
P4KE91CA-E3/54 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4KE91CA-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 P4KE91CA-E3/54?
For technical support, including P4KE91CA-E3/54 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4KE91CA-E3/54 requirements.
6.How does Aetrix verify that P4KE91CA-E3/54 is sourced from the original manufacturer or authorized distributors?
All P4KE91CA-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 P4KE91CA-E3/54 meets industry standards.
7.What is the process for return or replacement of P4KE91CA-E3/54?
All P4KE91CA-E3/54 units undergo pre-shipment inspection (PSI). If there is an issue with P4KE91CA-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 P4KE91CA-E3/54 part is unused and in its original packaging.
Return procedure for P4KE91CA-E3/54:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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