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Vishay General Semiconductor - Diodes Division P4KE91AHE3/54
- Part No.:
- P4KE91AHE3/54
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-204AL, DO-41, Axial
- Datasheet:
-
P4KE91AHE3/54.pdf
- Description:
- TVS DIODE 77.8VWM 125VC DO204AL
- Quantity:
- Payment:
- Shipping:
Inventory:3,898
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Product details
Overview
P4KE91AHE3/54 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 minimum breakdown voltage (VBR), 77.8 V maximum standoff voltage (VWM), 125 A peak pulse current (IPPM), 400 W peak pulse power (PPPM), and AEC-Q101 qualification - used to protect automotive sensor interfaces and industrial control inputs against inductive switching surges.
For engineers reviewing the P4KE91AHE3/54 datasheet, P4KE91AHE3/54 pinout, P4KE91AHE3/54 application, or P4KE91AHE3/54 equivalent, key selection criteria include its 125 A IPPM at 10/1000 μs, 1.0 mA test current (IT) for VBR, 1.0 μA max reverse leakage at VWM, and DO-41 mechanical compatibility with legacy through-hole PCB layouts.
Technical Context
This device operates as a unidirectional avalanche diode, triggering when reverse voltage exceeds its 86.5–95.5 V breakdown range. Its glass-passivated junction ensures stable clamping performance under repetitive surge conditions, with thermal resistance RθJL = 66 °C/W enabling reliable power dissipation up to 1.5 W at TL = 75 °C.
The P4KE91AHE3/54 exhibits a 0.106 %/°C temperature coefficient of VBR, low incremental surge resistance, and fast response time (<1 ns). It meets JESD 22-B106 soldering requirements (275 °C, 10 s) and JESD 201 Class 2 whisker testing - confirming suitability for automotive-grade production environments.
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 threshold for overvoltage protection |
| VWM | 77.8 V - maximum continuous reverse operating voltage before leakage exceeds 1.0 μA |
| IPPM | 125 A at 10/1000 μs waveform - peak transient current it safely clamps without failure |
| VC | 125 V at IPPM - clamped voltage seen by protected circuit during worst-case surge |
| PPPM | 400 W - peak pulse power handling capability per single 10/1000 μs event |
| TJ max | +175 °C - maximum junction temperature supporting operation in under-hood automotive locations |
| AEC-Q101 | Qualified - validated for automotive electronics per stress-test standard including HTRB, HTGB, and TCT |
Pinout & Package
Package: DO-41 (DO-204AL), axial-leaded, molded epoxy body with matte tin-plated leads. Cathode indicated by color band on one end.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal | Connected to lower-potential side (e.g., ground or return path) in unidirectional TVS configuration |
| Cathode | Reverse-biased clamping terminal | Connected to line being protected; conducts avalanche current when VREV > VBR |
Key Features
| Feature | Design Value |
|---|---|
| Glass passivated chip junction | Ensures stable VBR tolerance and long-term reliability under thermal cycling and humidity exposure |
| 400 W peak pulse power (10/1000 μs) | Supports robust protection against ISO 7637-2 Pulse 1/2a/5a transients in 12 V automotive systems |
| AEC-Q101 qualification | Validates suitability for automotive powertrain, body control, and ADAS modules requiring zero-defect reliability |
| DO-41 package with JESD 201 Class 2 whisker resistance | Enables high-volume automated insertion and reflow while preventing tin whisker-induced short circuits |
| Low 1.0 μA max reverse leakage at VWM | Minimizes standby power loss in always-on sensor supply rails and battery-backed circuits |
Applications
| Automotive Sensor Protection | Industrial PLC Input Protection |
|---|---|
Use Scenario: Protecting analog voltage outputs of engine coolant temperature (ECT) and manifold absolute pressure (MAP) sensors from load dump and inductive kickback. IC Role / Device Role / Timing Role: Unidirectional TVS placed between sensor output and ECU input to clamp transients before they reach precision ADC front-end. Use Value: Limits clamped voltage to 125 V, preventing damage to 5 V or 3.3 V rail-tied receivers while maintaining <1.0 μA leakage at 77.8 V standoff. |
Use Scenario: Safeguarding 24 V DC digital input channels on programmable logic controllers exposed to relay coil flyback and field wiring surges. IC Role / Device Role / Timing Role: Standoff-connected TVS across input terminals to shunt energy from 400 V/125 A transients induced by inductive loads. Use Value: Delivers 400 W pulse handling with 66 °C/W thermal resistance, enabling sustained operation at +85 °C ambient without derating. |
| Telecom Line Interface Protection | Consumer Power Supply Clamp |
Use Scenario: Shielding RS-485 transceiver I/O pins in base station remote units from lightning-induced surges on long cable runs. IC Role / Device Role / Timing Role: Primary-level unidirectional TVS on VCC and data lines, coordinated with secondary GDT or polymer PTC for staged protection. Use Value: Fast sub-nanosecond response and 125 V clamping ensure transceiver ICs remain within absolute maximum ratings during 10/1000 μs threats. |
Use Scenario: Clamping secondary-side rectifier output in AC/DC adapters to prevent overvoltage damage to downstream capacitors and regulators. IC Role / Device Role / Timing Role: Parallel-connected TVS across bulk capacitor to absorb residual switching spikes and transformer leakage energy. Use Value: 77.8 V VWM allows safe operation with 65 V nominal 24 V output designs, while 125 A IPPM handles worst-case flyback events. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ90A | Surface-mount SMB package (vs. through-hole DO-41); same 90 V VBR min, but 132 A IPPM and 600 W PPPM | Requires PCB redesign for SMT placement; better suited for space-constrained consumer electronics vs. legacy automotive harness interfaces | Select SMBJ90A only when board real estate is limited and reflow assembly is available. |
| P4KE91A-E3/54 | Same DO-41 package and electrical specs, but commercial-grade (non-AEC-Q101 qualified); identical VBR, VWM, IPPM, and VC | Lacks automotive qualification testing - acceptable for industrial or telecom use where AEC-Q101 is not mandated | Choose P4KE91A-E3/54 for cost-sensitive non-automotive applications with identical form/fit/function. |
Compared with SMBJ90A and P4KE91A-E3/54, the P4KE91AHE3/54 uniquely combines AEC-Q101 qualification, DO-41 through-hole compatibility, and 125 A surge capacity - making it the only drop-in solution for automotive OEMs upgrading legacy TVS designs without changing footprint or validation scope.
Availability
P4KE91AHE3/54 is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial PLC inputs, telecom line protection, and consumer power supply clamping requiring stable component supply across multi-year production cycles.
Supply support for P4KE91AHE3/54 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-grade qualification.
The P4KE91AHE3/54 belongs to Vishay's TRANSZORB® TVS family, engineered specifically for robust transient suppression in harsh environments - targeting automotive, industrial, and telecom infrastructure where surge immunity and long-term stability are critical.
FAQ
What is the breakdown voltage range of the P4KE91AHE3/54?
The P4KE91AHE3/54 has a guaranteed breakdown voltage (VBR) range of 86.5 V to 95.5 V at 1.0 mA test current, measured per ANSI/IEEE C62.35 standards. This tight tolerance ensures predictable clamping behavior in automotive and industrial overvoltage protection circuits where precise voltage thresholds are required for system-level safety compliance.
Is the P4KE91AHE3/54 suitable for automotive applications?
Yes, the P4KE91AHE3/54 is AEC-Q101 qualified and rated for operation from –55 °C to +175 °C junction temperature. Its glass-passivated junction, JESD 201 Class 2 whisker resistance, and 400 W peak pulse power make it suitable for under-hood and chassis-mounted automotive modules including engine control units, body electronics, and ADAS sensor interfaces.
What does the "HE3" suffix indicate in P4KE91AHE3/54?
The "HE3" suffix denotes RoHS-compliant construction with AEC-Q101 qualification and JESD 201 Class 2 whisker testing. It distinguishes the part from the commercial-grade "E3" variant (e.g., P4KE91A-E3/54), confirming enhanced reliability for automotive and high-reliability industrial use without altering electrical specifications or DO-41 mechanical form factor.
What is the maximum clamping voltage of the P4KE91AHE3/54 during a surge event?
The P4KE91AHE3/54 clamps to a maximum of 125 V at its rated peak pulse current of 125 A (10/1000 μs waveform). This clamping voltage is measured under standardized surge conditions and defines the upper voltage limit imposed on protected circuitry - critical for ensuring downstream ICs remain within their absolute maximum ratings during transient events.
How does the P4KE91AHE3/54 differ from bidirectional TVS diodes like P4KE91CA?
The P4KE91AHE3/54 is unidirectional and features a cathode band for polarity-sensitive placement, whereas P4KE91CA is bidirectional with no marking and symmetrical clamping in both directions. The P4KE91AHE3/54 offers lower forward voltage (VF = 3.5 V at 25 A) and supports higher IFSM (40 A), making it preferred for DC power line protection where polarity is fixed and surge direction is known.
P4KE91AHE3/54 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:
- -
- 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)
P4KE91AHE3/54 FAQ
1.How can I place an order for P4KE91AHE3/54 through Aetrix?
Please submit a Request for Quotation (RFQ) for P4KE91AHE3/54 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 P4KE91AHE3/54 reliable?
The price and inventory of P4KE91AHE3/54 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P4KE91AHE3/54 is usually 5 days.
3.What payment methods are accepted for P4KE91AHE3/54?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4KE91AHE3/54 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4KE91AHE3/54?
P4KE91AHE3/54 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4KE91AHE3/54 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 P4KE91AHE3/54?
For technical support, including P4KE91AHE3/54 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4KE91AHE3/54 requirements.
6.How does Aetrix verify that P4KE91AHE3/54 is sourced from the original manufacturer or authorized distributors?
All P4KE91AHE3/54 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 P4KE91AHE3/54 meets industry standards.
7.What is the process for return or replacement of P4KE91AHE3/54?
All P4KE91AHE3/54 units undergo pre-shipment inspection (PSI). If there is an issue with P4KE91AHE3/54, 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 P4KE91AHE3/54 part is unused and in its original packaging.
Return procedure for P4KE91AHE3/54:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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