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Vishay General Semiconductor - Diodes Division P4KE9.1AHE3/54
- Part No.:
- P4KE9.1AHE3/54
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-204AL, DO-41, Axial
- Datasheet:
-
P4KE9.1AHE3/54.pdf
- Description:
- TVS DIODE 7.78VWM 13.4VC DO204AL
- Quantity:
- Payment:
- Shipping:
Inventory:6,316
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Product details
Overview
P4KE9.1AHE3/54 from Vishay General Semiconductor is a unidirectional TransZORB® transient voltage suppressor diode in DO-41 package, with 9.1 V breakdown voltage (VBR = 8.65–9.55 V at IT = 1.0 mA), 7.78 V stand-off voltage (VWM), and 13.4 V clamping voltage (VC) at 29.9 A peak pulse current - designed for protecting MOSFETs, ICs, and sensor signal lines against inductive switching transients in automotive and industrial power supplies.
For engineers reviewing the P4KE9.1AHE3/54 datasheet, P4KE9.1AHE3/54 pinout, P4KE9.1AHE3/54 application, or P4KE9.1AHE3/54 equivalent, key selection criteria include its AEC-Q101 qualification, 400 W 10/1000 μs peak pulse power rating, low 0.068 %/°C temperature coefficient of VBR, and DO-41 leaded package compatibility with through-hole PCB assembly and manual rework.
Technical Context
This unidirectional TVS diode operates as a voltage-clamped shunt protector: when reverse voltage exceeds VWM (7.78 V), it transitions from high-impedance blocking to low-impedance conduction at VBR (8.65–9.55 V), clamping transient energy within 1 ps response time to limit downstream circuit stress. Its glass-passivated junction ensures stable leakage (<50 μA at VWM) and robust surge handling.
The device is rated for 400 W peak pulse power (10/1000 μs waveform, 0.01 % duty cycle), supports 40 A non-repetitive forward surge current (8.3 ms half-sine), and maintains operation across –55 °C to +175 °C junction temperature range - enabling use in under-hood automotive modules and industrial motor drives where thermal derating must be managed per Fig. 2 and Fig. 5.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 8.65 V / 9.55 V at IT = 1.0 mA - defines precise clamping onset threshold for overvoltage detection |
| VWM | 7.78 V - maximum continuous reverse working voltage before leakage exceeds 50 μA |
| VC at IPPM | 13.4 V at 29.9 A - peak clamped voltage during 10/1000 μs surge, limiting stress on protected ICs |
| PPPM | 400 W - peak transient energy absorption capability without failure under standardized waveform |
| IFSM | 40 A - surge current tolerance for 8.3 ms half-sine wave, critical for relay/coil turn-off spikes |
| TJ max. | +175 °C - enables placement near heat sources (e.g., power MOSFETs) without thermal shutdown |
| Temp. coeff. of VBR | 0.068 %/°C - low drift ensures consistent clamping across operating temperature range |
Pinout & Package
DO-41 (DO-204AL) molded epoxy package with axial leads: cathode indicated by color band; matte tin-plated terminals compliant with J-STD-002 and JESD 22-B102 solderability standards.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal | Connected to ground or low-side reference in unidirectional clamp configuration |
| Cathode | Reverse-biased clamping terminal | Connected to protected line (e.g., 12 V rail or sensor input); color band identifies this end |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive under-hood applications including engine control units and body electronics |
| Glass passivated junction | Ensures stable leakage current (<50 μA) and long-term reliability under humidity and thermal cycling |
| 400 W peak pulse power (10/1000 μs) | Handles common ISO 7637-2 pulse 1/2/5a transients without degradation |
| Low incremental surge resistance | Minimizes VC overshoot during fast-rising transients (e.g., ESD or inductive kick) |
| RoHS-compliant HE3 suffix | Meets JESD 201 Class 2 whisker resistance, suitable for high-reliability industrial deployments |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Suppressing load-dump and jump-start transients on 12 V battery-fed ECUs and lighting modules. IC Role / Device Role / Timing Role: Unidirectional shunt TVS placed between power rail and chassis ground to clamp surges above 7.78 V. Use Value: Limits peak rail voltage to ≤13.4 V during 29.9 A transients, preventing damage to 16 V-rated microcontrollers and CAN transceivers. | Use Scenario: Protecting analog inputs of PLC I/O modules from field-wiring induced surges in factory automation. IC Role / Device Role / Timing Role: Standoff-connected TVS on 4–20 mA current loop or 0–10 V sensor lines to absorb coupling noise. Use Value: Maintains <50 μA leakage at 7.78 V, avoiding signal offset errors while clamping 10/1000 μs spikes to safe levels. |
| Consumer Power Adapter Input Stage | MOSFET Gate Driver Protection |
Use Scenario: Safeguarding primary-side controllers in AC-DC adapters against lightning-induced surges on mains input. IC Role / Device Role / Timing Role: Primary-side unidirectional TVS across bridge rectifier output to clamp AC line transients. Use Value: Withstands 400 W pulses and operates up to +175 °C, enabling compact heatsink-free designs near transformer windings. | Use Scenario: Preventing gate oxide rupture in high-side N-channel MOSFETs driven by PWM controllers. IC Role / Device Role / Timing Role: TVS connected between gate and source to clamp Miller-induced voltage spikes during switching. Use Value: Fast 1 ps response and low VC (13.4 V) ensure gate voltage stays below 20 V absolute maximum rating of logic-level MOSFETs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ9.0A | Surface-mount SMB package; same VBR (8.5–9.4 V), lower PPPM (600 W), higher IPPM (65.4 A) | Requires PCB redesign for SMT layout; better suited for high-density consumer boards | Select when automated assembly and space constraints outweigh through-hole serviceability needs |
| 1.5KE9.1A | Same DO-41 package; higher PPPM (1500 W), higher VC (14.2 V at 105 A), larger junction capacitance | Better for severe industrial surges but increases capacitive loading on high-speed lines | Select when surge severity exceeds ISO 7637-2 Level IV and clamping voltage margin allows 14.2 V |
Compared with SMBJ9.0A and 1.5KE9.1A, the P4KE9.1AHE3/54 offers optimal balance of AEC-Q101 qualification, through-hole serviceability, and precise 13.4 V clamping - making it preferred for automotive replacement modules and industrial field-serviceable equipment where RoHS-compliant HE3 plating and JESD 201 Class 2 whisker resistance are mandatory.
Availability
P4KE9.1AHE3/54 is available at Aetrix Electronics and suitable for automotive ECU protection, industrial sensor interface hardening, and consumer power adapter input-stage surge suppression requiring stable component supply across extended production lifecycles.
Supply support for P4KE9.1AHE3/54 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 and automotive-grade validation.
The P4KE9.1AHE3/54 belongs to the TransZORB® family - engineered specifically for robust, cost-effective transient suppression in harsh environments where AEC-Q101 compliance and stable clamping performance are non-negotiable.
FAQ
What is the clamping voltage of the P4KE9.1AHE3/54 under standard 10/1000 μs surge conditions?
The P4KE9.1AHE3/54 has a maximum clamping voltage (VC) of 13.4 V at 29.9 A peak pulse current (IPPM) under the standardized 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 circuits during transient events - critical for ensuring compatibility with 16 V-rated ICs and MOSFETs in automotive and industrial systems.
Is the P4KE9.1AHE3/54 suitable for automotive applications?
Yes, the P4KE9.1AHE3/54 is AEC-Q101 qualified (per note on page 3 and mechanical data section), features RoHS-compliant HE3 plating meeting JESD 201 Class 2 whisker resistance, and operates from –55 °C to +175 °C. These attributes make the P4KE9.1AHE3/54 appropriate for under-hood engine control units, body electronics, and lighting modules where reliability under thermal and mechanical stress is essential.
How does the P4KE9.1AHE3/54 differ from the P4KE9.1A-E3/54 variant?
The P4KE9.1AHE3/54 is AEC-Q101 qualified and meets JESD 201 Class 2 whisker resistance, whereas the P4KE9.1A-E3/54 is commercial grade with JESD 201 Class 1A whisker testing. Both share identical electrical specs (VBR, VWM, VC, PPPM) and DO-41 packaging, but only the HE3 suffix guarantees automotive-grade process controls and extended reliability validation required for Tier 1 automotive supply chains.
What is the maximum reverse leakage current for the P4KE9.1AHE3/54 at its stand-off voltage?
At the specified stand-off voltage (VWM = 7.78 V), the P4KE9.1AHE3/54 exhibits a maximum reverse leakage current (ID) of 50 μA at TA = 25 °C. This low leakage ensures minimal power loss and signal interference in always-on sensor interfaces and battery-backed systems - confirmed in the Electrical Characteristics table on page 2 of Vishay document 88365.
Can the P4KE9.1AHE3/54 be used in bidirectional configurations?
No, the P4KE9.1AHE3/54 is a unidirectional TVS diode, identified by the "A" suffix and cathode band marking. Bidirectional variants require the "CA" suffix (e.g., P4KE9.1CA). Using the P4KE9.1AHE3/54 in reverse-biased AC signal paths would result in forward conduction and failure; correct polarity orientation - cathode toward the protected line - is mandatory for proper transient clamping function.
P4KE9.1AHE3/54 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):
- 7.78V
- Voltage - Breakdown (Min):
- 8.65V
- Voltage - Clamping (Max) @ Ipp:
- 13.4V
- Current - Peak Pulse (10/1000µs):
- 29.9A
- 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)
P4KE9.1AHE3/54 FAQ
1.How can I place an order for P4KE9.1AHE3/54 through Aetrix?
Please submit a Request for Quotation (RFQ) for P4KE9.1AHE3/54 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 P4KE9.1AHE3/54 reliable?
The price and inventory of P4KE9.1AHE3/54 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P4KE9.1AHE3/54 is usually 5 days.
3.What payment methods are accepted for P4KE9.1AHE3/54?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4KE9.1AHE3/54 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4KE9.1AHE3/54?
P4KE9.1AHE3/54 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4KE9.1AHE3/54 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 P4KE9.1AHE3/54?
For technical support, including P4KE9.1AHE3/54 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4KE9.1AHE3/54 requirements.
6.How does Aetrix verify that P4KE9.1AHE3/54 is sourced from the original manufacturer or authorized distributors?
All P4KE9.1AHE3/54 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 P4KE9.1AHE3/54 meets industry standards.
7.What is the process for return or replacement of P4KE9.1AHE3/54?
All P4KE9.1AHE3/54 units undergo pre-shipment inspection (PSI). If there is an issue with P4KE9.1AHE3/54, 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 P4KE9.1AHE3/54 part is unused and in its original packaging.
Return procedure for P4KE9.1AHE3/54:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P4KE9.1AHE3/54 Tags
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