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Vishay General Semiconductor - Diodes Division P4KE91A-E3/54
- Part No.:
- P4KE91A-E3/54
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-204AL, DO-41, Axial
- Datasheet:
-
P4KE91A-E3/54.pdf
- Description:
- TVS DIODE 77.8VWM 125VC DO204AL
- Quantity:
- Payment:
- Shipping:
Inventory:6,770
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Product details
Overview
P4KE91A-E3/54 from Vishay General Semiconductor is a unidirectional Transient Voltage Suppressor (TVS) diode in DO-41 package, designed for clamping voltage transients on power and signal lines. It features a 86.5 V to 95.5 V breakdown voltage (VBR) at 1.0 mA test current, 77.8 V maximum stand-off voltage (VWM), and clamps up to 125 V at 3.2 A peak pulse current (IPPM) under 10/1000 μs waveform - used in automotive sensor protection and industrial I/O interface surge suppression.
For engineers reviewing the P4KE91A-E3/54 datasheet, P4KE91A-E3/54 pinout, P4KE91A-E3/54 application, or P4KE91A-E3/54 equivalent, key selection criteria include unidirectional polarity, 400 W peak pulse power rating, 1.5 W steady-state power dissipation, 175 °C max junction temperature, and AEC-Q101 qualification for automotive-grade reliability.
Technical Context
This TVS diode operates as a voltage-clamping device in series with sensitive downstream circuitry, conducting only when reverse voltage exceeds its VBR threshold. Its glass-passivated junction ensures stable breakdown behavior and low leakage (<1.0 μA at VWM), while the DO-41 package supports manual and automated through-hole assembly.
The device responds within picoseconds to transient overvoltages induced by inductive switching or ESD events. Its 10/1000 μs waveform rating reflects standardized surge immunity testing per REA definitions, and thermal resistance values (RθJL = 66 °C/W, RθJA = 100 °C/W) define derating requirements for sustained operation above 25 °C ambient.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 86.5 V / 95.5 V at 1.0 mA - defines precise clamping onset range for overvoltage protection |
| VWM | 77.8 V - maximum continuous reverse operating voltage before leakage rises significantly |
| VC @ IPPM | 125 V at 3.2 A - clamped voltage during 400 W transient, limiting stress on protected ICs |
| PPPM | 400 W - peak surge power handling capability with 10/1000 μs waveform, 0.01 % duty cycle |
| IFSM | 40 A - non-repetitive forward surge current rating (8.3 ms half-sine), critical for input rectifier protection |
| TJ max | 175 °C - maximum junction temperature enabling operation in under-hood automotive environments |
| Leakage ID | ≤1.0 μA at VWM - ensures minimal standby power loss and signal integrity in high-impedance circuits |
Pinout & Package
DO-41 (DO-204AL) molded epoxy package with axial leads; cathode indicated by color band on one end. Matte tin-plated leads meet J-STD-002 solderability and JESD 22-B102 reliability standards. RoHS-compliant, commercial grade (E3 suffix).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal | Connected to lower-potential side of protected line; conducts during positive surges when used in reverse-biased configuration |
| Cathode | Reverse-bias clamping terminal | Connected to higher-potential side; initiates avalanche conduction when transient exceeds VBR, shunting energy to ground |
Key Features
| Feature | Design Value |
|---|---|
| Glass passivated chip junction | Ensures stable, repeatable breakdown voltage and long-term reliability under thermal cycling |
| 400 W peak pulse power (10/1000 μs) | Provides robust protection against ISO 7637-2 Load Dump and IEC 61000-4-5 surge events |
| AEC-Q101 qualified (E3 suffix variant is commercial; HE3 is qualified) | P4KE91A-E3/54 is commercial grade; for automotive use, P4KE91AHE3/54 required - verified per stress test standard |
| Low incremental surge resistance | Minimizes voltage overshoot during fast transients, improving clamping precision |
| UL 94 V-0 compliant molding compound | Meets flammability safety requirements for enclosed industrial and automotive enclosures |
Applications
| Automotive Sensor Protection | Industrial PLC Input Protection |
|---|---|
|
Use Scenario: Protecting CAN/LIN bus transceivers and analog sensor front-ends (e.g., pressure, temperature) from load dump and jump-start transients. IC Role / Device Role / Timing Role: Unidirectional clamping device placed between supply rail and ground, triggered only during negative-going surges on VCC lines. Use Value: Limits voltage to ≤125 V during 3.2 A transients, preventing latch-up or gate oxide damage in 5 V/12 V sensor ICs. |
Use Scenario: Safeguarding 24 V DC digital input modules in programmable logic controllers against field-wiring induced surges. IC Role / Device Role / Timing Role: Standoff device across input terminals, absorbing energy from inductive coil de-energization (e.g., solenoid valves). Use Value: Withstands 400 W pulses without degradation, maintaining <1.0 μA leakage at 24 V nominal, ensuring clean logic-level detection. |
| Consumer Power Adapter Output | Telecom Line Interface Protection |
|
Use Scenario: Secondary-side overvoltage clamp in AC/DC adapters supplying USB-C PD or PoE-powered devices. IC Role / Device Role / Timing Role: Fast-response shunt element parallel to output capacitor, activated within nanoseconds of output overvoltage. Use Value: Clamps 77.8 V standoff to 125 V at full rated surge, protecting downstream DC-DC converters rated for ≤130 V input. |
Use Scenario: Primary protection on telephone line interface cards exposed to lightning-induced surges per ITU-T K.20/K.44. IC Role / Device Role / Timing Role: First-stage suppressor ahead of GDT or MOV, handling fast-rising edge transients before slower devices engage. Use Value: 10/1000 μs rating aligns with telecom surge standards; 175 °C TJ max supports operation in sealed outdoor cabinets. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ90A | Surface-mount SMB package (vs. through-hole DO-41); same 90 V VBR range, 600 W PPPM | Requires PCB redesign for SMT placement; better suited for high-density consumer electronics | Select SMBJ90A when board space is constrained and reflow assembly is available; P4KE91A-E3/54 remains optimal for legacy through-hole designs. |
| 1.5KE91A | Same DO-41 package but 1500 W PPPM; higher IPPM (13.5 A) and VC (142 V) | Higher clamping voltage reduces margin for 12 V systems; preferred for 24–48 V industrial rails | Choose 1.5KE91A where surge energy exceeds 400 W; P4KE91A-E3/54 offers tighter VC control for low-voltage IC protection. |
Compared with SMBJ90A and 1.5KE91A, the P4KE91A-E3/54 delivers optimal balance of clamping precision (125 V), through-hole manufacturability, and cost-efficiency for 24 V automotive and industrial interfaces - without requiring layout changes or compromising on leakage or thermal performance.
Availability
P4KE91A-E3/54 is available at Aetrix Electronics and suitable for automotive sensor modules, industrial PLC inputs, and telecom line interface protection requiring stable component supply across extended production lifecycles.
Supply support for P4KE91A-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, MOSFETs, optoelectronics, and passive components with emphasis on reliability and automotive qualification.
The P4KE91A-E3/54 belongs to Vishay's TRANSZORB® TVS family, engineered specifically for robust, cost-effective transient suppression in harsh environments including automotive, industrial, and telecom infrastructure.
FAQ
What is the polarity configuration of P4KE91A-E3/54?
The P4KE91A-E3/54 is a unidirectional TVS diode, meaning it functions as a Zener-like clamp in reverse bias and conducts forward current like a standard diode. The cathode is marked by a color band on the DO-41 body; this polarity must be observed during PCB layout to ensure correct clamping direction on the protected line.
Does P4KE91A-E3/54 meet AEC-Q101 qualification?
No - P4KE91A-E3/54 carries the E3 suffix, indicating RoHS-compliant commercial grade. For AEC-Q101 qualification, the correct part is P4KE91AHE3/54 (HE3 suffix). The datasheet explicitly states that HE3 variants are AEC-Q101 qualified, while E3 variants are not.
What is the maximum clamping voltage of P4KE91A-E3/54 under surge conditions?
The maximum clamping voltage (VC) of P4KE91A-E3/54 is 125 V at 3.2 A peak pulse current (IPPM) using the standard 10/1000 μs waveform. This value is measured per Figure 1 in the Vishay datasheet 88365 and defines the upper voltage limit imposed on protected circuitry during transient events.
Can P4KE91A-E3/54 be used in bidirectional configurations?
No - P4KE91A-E3/54 is strictly unidirectional. Bidirectional variants in the same family use the "CA" suffix (e.g., P4KE91CA). Using P4KE91A-E3/54 in a bidirectional application would result in forward conduction during negative transients, potentially damaging the device or failing to protect the circuit.
What is the thermal resistance from junction to lead (RθJL) for P4KE91A-E3/54?
The typical thermal resistance from junction to lead (RθJL) for P4KE91A-E3/54 is 66 °C/W, as specified in the Thermal Characteristics table of Vishay document 88365. This parameter is critical for calculating junction temperature rise under steady-state power dissipation and informs heatsinking decisions in high-duty-cycle applications.
P4KE91A-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):
- 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)
P4KE91A-E3/54 FAQ
1.How can I place an order for P4KE91A-E3/54 through Aetrix?
Please submit a Request for Quotation (RFQ) for P4KE91A-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 P4KE91A-E3/54 reliable?
The price and inventory of P4KE91A-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 P4KE91A-E3/54 is usually 5 days.
3.What payment methods are accepted for P4KE91A-E3/54?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4KE91A-E3/54 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4KE91A-E3/54?
P4KE91A-E3/54 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4KE91A-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 P4KE91A-E3/54?
For technical support, including P4KE91A-E3/54 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4KE91A-E3/54 requirements.
6.How does Aetrix verify that P4KE91A-E3/54 is sourced from the original manufacturer or authorized distributors?
All P4KE91A-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 P4KE91A-E3/54 meets industry standards.
7.What is the process for return or replacement of P4KE91A-E3/54?
All P4KE91A-E3/54 units undergo pre-shipment inspection (PSI). If there is an issue with P4KE91A-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 P4KE91A-E3/54 part is unused and in its original packaging.
Return procedure for P4KE91A-E3/54:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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