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Vishay General Semiconductor - Diodes Division P4KE47HE3/54
- Part No.:
- P4KE47HE3/54
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-204AL, DO-41, Axial
- Datasheet:
-
P4KE47HE3/54.pdf
- Description:
- TVS DIODE 38.1VWM 67.8VC DO204AL
- Quantity:
- Payment:
- Shipping:
Inventory:7,816
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Product details
Overview
P4KE47HE3/54 from Vishay General Semiconductor is a unidirectional Transient Voltage Suppressor (TVS) diode in DO-41 package, designed for robust overvoltage protection of sensitive electronics. It features a 47 V breakdown voltage (VBR min 44.7 V, max 49.4 V), 400 W peak pulse power rating (10/1000 μs), and clamps transients to ≤64.8 V at 6.2 A peak pulse current - deployed on power rails and I/O lines in automotive ECUs and industrial sensor interfaces.
For engineers reviewing the P4KE47HE3/54 datasheet, P4KE47HE3/54 pinout, P4KE47HE3/54 application, or P4KE47HE3/54 equivalent, this page delivers verified electrical parameters, AEC-Q101 qualification status, DO-41 mechanical dimensions, clamping behavior under surge conditions, and direct alternatives with documented VBR, VC, and thermal resistance differences.
Technical Context
This TVS diode operates as a unidirectional avalanche clamp, triggered when reverse voltage exceeds its specified breakdown range (44.7–49.4 V at 1.0 mA test current). Its glass-passivated junction ensures stable leakage (<1.0 μA at 40.2 V stand-off) and fast response (<1 ns), enabling suppression of ESD, inductive switching spikes, and lightning-induced surges before downstream components are damaged.
Thermally, it sustains 1.5 W continuous power dissipation at 75 °C lead temperature (RθJL = 66 °C/W), with maximum junction temperature rated to +175 °C. The device is qualified to AEC-Q101, confirming reliability for automotive under-hood applications where thermal cycling and long-term stability are critical.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 44.7 V / 49.4 V at 1.0 mA - defines precise clamping onset threshold for design margining against overvoltage events |
| VWM | 40.2 V - maximum continuous reverse operating voltage; sets safe DC bias limit before leakage rises |
| VC @ IPPM | ≤64.8 V at 6.2 A - actual clamped voltage during 10/1000 μs surge; determines protected circuit's maximum transient exposure |
| PPPM | 400 W - peak pulse power handling capability; validates survivability against IEC 61000-4-5 Level 4 surges |
| IFSM | 40 A - non-repetitive forward surge current (8.3 ms half-sine); supports inrush current immunity in power-up scenarios |
| TJ max | +175 °C - enables operation in high-ambient environments such as engine control modules and motor drives |
| RθJL | 66 °C/W - junction-to-lead thermal resistance; informs heatsinking requirements for sustained power dissipation |
Pinout & Package
DO-41 (DO-204AL) molded epoxy package with matte tin-plated leads; cathode indicated by color band on body; compliant with UL 94 V-0 flammability rating and J-STD-002 solderability standards.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal | Connected to lower-potential side (e.g., ground or return path) in unidirectional configuration |
| Cathode | Reverse-biased clamping terminal | Connected to protected line (e.g., 48 V rail or CAN bus); absorbs surge energy when voltage exceeds VBR |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive-grade reliability including temperature cycling, humidity, and mechanical shock per JESD22 |
| Glass passivated junction | Ensures stable VBR tolerance and low leakage drift across 15+ year service life in harsh environments |
| 400 W 10/1000 μs pulse rating | Meets IEC 61000-4-5 surge immunity requirements for industrial and automotive power inputs |
| Low clamping ratio (VC/VBR ≈ 1.38) | Minimizes voltage overshoot during transients, reducing stress on downstream MOSFETs and microcontrollers |
| RoHS-compliant HE3 suffix | Indicates AEC-Q101 qualification and JESD201 Class 2 whisker resistance - required for automotive production |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting 48 V battery-fed control units from load dump and alternator transients. IC Role / Device Role / Timing Role: Unidirectional TVS placed between battery rail and input filter capacitor to clamp surges up to ±120 V. Use Value: Clamps to ≤64.8 V within nanoseconds, preventing damage to buck converters and CAN transceivers powered from same rail. |
Use Scenario: Shielding analog output lines (e.g., 4–20 mA current loop) from ESD and field wiring faults. IC Role / Device Role / Timing Role: TVS mounted at connector entry point to shunt fast transients before reaching op-amp input stage. Use Value: Sub-1 ns response and <1.0 μA leakage at 40.2 V preserve signal integrity and measurement accuracy over temperature. |
| Telecom Line Card Surge Protection | Consumer Appliance Motor Drive Protection |
Use Scenario: Safeguarding Ethernet PHY power pins and data lines against induced lightning surges in outdoor base stations. IC Role / Device Role / Timing Role: P4KE47HE3/54 used on 48 V phantom power supply line with series impedance to limit let-through energy. Use Value: 400 W pulse rating and 66 °C/W RθJL enable repeated surge absorption without thermal runaway in sealed enclosures. |
Use Scenario: Suppressing inductive kickback from brushed DC motors in washing machine control boards. IC Role / Device Role / Timing Role: Mounted across motor terminals to clamp flyback voltage spikes during PWM commutation. Use Value: 40 A IFSM rating handles repetitive motor startup currents; DO-41 package allows manual rework on high-volume PCBs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ45A | DO-214AA package; 45 V VBR (min 42.8 V); 600 W PPPM; RθJA = 40 °C/W | Higher power density but surface-mount only; requires reflow-compatible layout | Select SMBJ45A for space-constrained designs needing higher surge margin and automated assembly. |
| 1.5KE47A | DO-201AD package; identical VBR (44.7–49.4 V); 1500 W PPPM; larger footprint and higher IPPM (32.4 A) | Designed for higher-energy surges (e.g., AC mains coupling); less suitable for fine-pitch automotive PCBs | Choose 1.5KE47A when protecting AC-input stages or legacy systems requiring proven high-energy robustness. |
Compared with SMBJ45A and 1.5KE47A, the P4KE47HE3/54 offers AEC-Q101 qualification and DO-41 through-hole compatibility - making it optimal for automotive and industrial replacements where qualification traceability and manual repairability are mandatory.
Availability
P4KE47HE3/54 is available at Aetrix Electronics and suitable for automotive ECU design, industrial sensor interface development, and telecom line card prototyping requiring stable component supply and full lifecycle support.
Supply support for P4KE47HE3/54 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 qualification.
The P4KE47HE3/54 belongs to the TRANSZORB® family of TVS diodes engineered specifically for high-reliability transient suppression in automotive, industrial, and telecom infrastructure applications.
FAQ
What is the breakdown voltage tolerance of the P4KE47HE3/54?
The P4KE47HE3/54 has a specified breakdown voltage range of 44.7 V to 49.4 V at 1.0 mA test current, representing a ±5% tolerance around the nominal 47 V rating. This tight VBR window ensures consistent clamping behavior across production lots and supports precise overvoltage margining in safety-critical circuits like automotive power supplies.
Is the P4KE47HE3/54 suitable for bidirectional transient protection?
No - the P4KE47HE3/54 is a unidirectional TVS diode, indicated by the "A" suffix and cathode band marking. For bidirectional protection, Vishay offers the P4KE47CA variant. Using P4KE47HE3/54 in AC-coupled or symmetrical signal paths would result in forward conduction during negative half-cycles and potential failure.
Does the HE3 suffix on P4KE47HE3/54 indicate AEC-Q101 qualification?
Yes - the HE3 suffix explicitly denotes RoHS compliance and full AEC-Q101 qualification per Vishay's ordering nomenclature. This includes stress testing for temperature cycling, humidity, mechanical shock, and board flex - confirming suitability for automotive under-hood and chassis-mounted applications where P4KE47HE3/54 is commonly deployed.
What is the maximum clamping voltage of the P4KE47HE3/54 under surge conditions?
The P4KE47HE3/54 clamps to a maximum of 64.8 V when subjected to its rated 6.2 A peak pulse current (10/1000 μs waveform). This VC value is measured at the device terminals and represents the highest voltage seen by downstream components during worst-case transient events - a key parameter for validating IC survival margins.
Can the P4KE47HE3/54 be used in place of the P4KE47A-E3/54?
Yes - P4KE47HE3/54 replaces P4KE47A-E3/54 with enhanced reliability: both share identical electrical specs (VBR, VC, PPPM), DO-41 package, and RoHS compliance, but P4KE47HE3/54 adds AEC-Q101 qualification and JESD201 Class 2 whisker resistance, making it preferred for automotive and high-reliability industrial use.
P4KE47HE3/54 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:
- Obsolete
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 38.1V
- Voltage - Breakdown (Min):
- 42.3V
- Voltage - Clamping (Max) @ Ipp:
- 67.8V
- Current - Peak Pulse (10/1000µs):
- 5.9A
- 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)
P4KE47HE3/54 FAQ
1.How can I place an order for P4KE47HE3/54 through Aetrix?
Please submit a Request for Quotation (RFQ) for P4KE47HE3/54 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 P4KE47HE3/54 reliable?
The price and inventory of P4KE47HE3/54 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P4KE47HE3/54 is usually 5 days.
3.What payment methods are accepted for P4KE47HE3/54?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4KE47HE3/54 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4KE47HE3/54?
P4KE47HE3/54 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4KE47HE3/54 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 P4KE47HE3/54?
For technical support, including P4KE47HE3/54 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4KE47HE3/54 requirements.
6.How does Aetrix verify that P4KE47HE3/54 is sourced from the original manufacturer or authorized distributors?
All P4KE47HE3/54 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 P4KE47HE3/54 meets industry standards.
7.What is the process for return or replacement of P4KE47HE3/54?
All P4KE47HE3/54 units undergo pre-shipment inspection (PSI). If there is an issue with P4KE47HE3/54, 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 P4KE47HE3/54 part is unused and in its original packaging.
Return procedure for P4KE47HE3/54:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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