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Vishay General Semiconductor - Diodes Division P4KE56A-E3/54
- Part No.:
- P4KE56A-E3/54
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-204AL, DO-41, Axial
- Datasheet:
-
P4KE56A-E3/54.pdf
- Description:
- TVS DIODE 47.8VWM 77VC DO204AL
- Quantity:
- Payment:
- Shipping:
Inventory:8,668
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Product details
Overview
P4KE56A-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 53.2 V minimum breakdown voltage (VBR), 47.8 V maximum stand-off voltage (VWM), 77.0 V clamping voltage (VC) at 5.2 A peak pulse current, and 400 W peak pulse power rating with 10/1000 μs waveform - used in automotive sensor protection and industrial power supply input stages.
For engineers reviewing the P4KE56A-E3/54 datasheet, P4KE56A-E3/54 pinout, P4KE56A-E3/54 application, or P4KE56A-E3/54 equivalent, key selection criteria include unidirectional polarity, DO-41 mechanical compatibility, 175 °C max junction temperature, AEC-Q101 qualification (via HE3 suffix variant), and thermal resistance of 66 °C/W (junction-to-lead).
Technical Context
This device operates as a silicon avalanche diode optimized for transient suppression in DC circuits. Its glass-passivated junction enables fast response time (<1 ns), low incremental surge resistance, and stable clamping under repetitive 10/1000 μs pulses at 0.01% duty cycle. The unidirectional configuration requires cathode identification via color band.
Thermal performance is defined by RθJL = 66 °C/W and RθJA = 100 °C/W (LLead = 10 mm), supporting operation from –55 °C to +175 °C. It meets JESD 22-B106 solder dip requirements (275 °C, 10 s) and JESD 201 class 1A whisker testing per E3 suffix.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 53.2 V / 58.8 V at 1.0 mA test current - defines reliable avalanche initiation threshold for overvoltage detection |
| VWM | 47.8 V maximum - ensures no conduction during normal 48 V system operation |
| VC @ IPPM | 77.0 V at 5.2 A - limits downstream component stress during 400 W transient events |
| PPPM | 400 W with 10/1000 μs waveform - sustains high-energy surges common in automotive load dump and inductive switching |
| IFSM | 40 A peak forward surge (8.3 ms half-sine) - supports robustness against short-duration overcurrents |
| TJ max | +175 °C - enables use in under-hood automotive and high-temperature industrial environments |
| RθJL | 66 °C/W - allows direct PCB trace heat sinking without external heatsink for moderate duty cycles |
Pinout & Package
DO-41 (DO-204AL) molded epoxy package with axial leads; matte tin-plated terminals solderable per J-STD-002 and JESD 22-B102. Cathode identified by color band on body.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry / transient return path | Connected to ground or low-impedance return in unidirectional clamp configuration |
| Cathode | Avalanche clamping node / protected line connection | Connected to line being protected (e.g., 48 V rail); color-banded end |
Key Features
| Feature | Design Value |
|---|---|
| Glass passivated junction | Enables stable, repeatable avalanche characteristics and long-term reliability under thermal cycling |
| 400 W peak pulse power (10/1000 μs) | Handles ISO 7637-2 Pulse 5a/b load dump energy in 12 V/24 V/48 V automotive systems |
| AEC-Q101 qualified (HE3 variant) | Validated for automotive electronics per stress test requirements including HTGB, HTRB, and TCT |
| Low clamping ratio (VC/VBR ≈ 1.45) | Minimizes overvoltage margin between clamping and breakdown - critical for protecting 60 V-rated MOSFETs |
| UL 94 V-0 molding compound | Meets flammability safety requirements for enclosed industrial and transportation equipment |
Applications
| Automotive Body Control Module | Industrial PLC Digital Input |
|---|---|
Use Scenario: Protecting microcontroller GPIO and CAN transceiver power rails from load dump and jump-start transients in BCMs. IC Role / Device Role / Timing Role: Unidirectional TVS clamping 48 V supply rail to limit voltage excursion below 77 V during 100 ms load dump events. Use Value: Prevents latch-up or permanent damage to 60 V-rated power management ICs and level-shifters exposed to ISO 16750-2 Class D surges. |
Use Scenario: Safeguarding 24 V digital input channels in programmable logic controllers against field-wiring induced surges and ESD. IC Role / Device Role / Timing Role: Standoff at 24 V nominal while clamping 1 kV/500 A ring wave transients to ≤77 V within <1 ns. Use Value: Eliminates need for additional series impedance or RC filtering, preserving signal integrity and response time of optocoupled inputs. |
| Telecom Power Supply Input | Consumer Appliance Motor Drive |
Use Scenario: Secondary-side transient suppression on 48 V PoE-powered switch fabric modules subjected to lightning-induced surges. IC Role / Device Role / Timing Role: Fast-acting shunt device limiting voltage across DC-DC controller ICs during 10/1000 μs induced surges. Use Value: Maintains regulation stability by preventing overvoltage shutdown of synchronous buck controllers operating near 50 V input range. |
Use Scenario: Clamping flyback voltage spikes from brushed DC motor commutation in smart home appliances. IC Role / Device Role / Timing Role: Parallel-connected TVS absorbing inductive kickback energy before it reaches H-bridge MOSFETs. Use Value: Extends MOSFET lifetime by reducing VDS stress peaks from 85 V to 77 V during 100 A switching transitions. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ58A | DO-214AA package; 58 V VBR min; 400 W rating; lower RθJA (50 °C/W) but higher VC (93.6 V) | Surface-mount layout; less effective clamping for 60 V-rated devices due to higher VC | Select when board space is constrained and thermal management favors SMD over axial leaded packages |
| 1.5KE56A | Same DO-41 package; identical VBR/VWM/VC; 1500 W peak power (10/1000 μs); higher IPPM (27.5 A) | Higher energy handling for severe industrial surge environments (IEC 61000-4-5 Level 4) | Select when legacy 1.5 kW surge immunity is required and board layout accommodates same footprint |
Compared with SMBJ58A and 1.5KE56A, P4KE56A-E3/54 offers optimal balance of clamping precision (77.0 V), axial DO-41 mechanical robustness, and AEC-Q101-ready qualification path - making it preferred for cost-sensitive, high-reliability 48 V automotive and industrial power rail protection where strict VC margin is critical.
Availability
P4KE56A-E3/54 is available at Aetrix Electronics and suitable for automotive body electronics, industrial PLC input protection, and telecom power supply design requiring stable component supply, RoHS compliance, and traceable sourcing.
Supply support for P4KE56A-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, and protection devices with emphasis on reliability, automotive qualification, and high-volume manufacturability.
The P4KE series targets cost-effective, high-energy transient suppression in DC power rails and signal lines across automotive, industrial, and telecom applications - prioritizing clamping accuracy, thermal robustness, and qualification readiness.
FAQ
What is the polarity configuration of P4KE56A-E3/54?
P4KE56A-E3/54 is a unidirectional TVS diode. Its cathode is marked by a color band on the DO-41 body, and it conducts only in reverse bias during overvoltage events. This configuration ensures proper clamping on positive-going transients relative to ground, and it must be oriented with the banded end toward the protected line. The P4KE56A-E3/54 does not conduct in forward direction under normal operation.
Does P4KE56A-E3/54 meet automotive qualification standards?
The P4KE56A-E3/54 itself carries the E3 suffix, indicating RoHS compliance and commercial-grade qualification. For automotive use, Vishay offers the P4KE56AHE3/54 variant with AEC-Q101 qualification. While P4KE56A-E3/54 shares identical electrical and thermal specs, only the HE3 version has undergone full AEC-Q101 stress testing - including temperature cycling, high-temperature reverse bias, and unbiased highly accelerated stress testing.
What is the maximum clamping voltage of P4KE56A-E3/54 under standard test conditions?
The maximum clamping voltage (VC) of P4KE56A-E3/54 is 77.0 V, measured at 5.2 A peak pulse current (IPPM) using the standardized 10/1000 μs double-exponential waveform. This value represents the upper limit of voltage seen by downstream circuitry during a 400 W transient event, and it is guaranteed across the full operating temperature range per Vishay's datasheet specifications.
How does P4KE56A-E3/54 compare to P4KE56CA in terms of functionality?
P4KE56A-E3/54 is unidirectional, while P4KE56CA is bidirectional - meaning the latter suppresses transients of either polarity and has no polarity marking. Their breakdown voltages differ: P4KE56A-E3/54 has VBR = 53.2–58.8 V (unidirectional), whereas P4KE56CA has symmetric VBR = 53.2–58.8 V in both directions. Use P4KE56A-E3/54 for DC rails with defined ground reference; choose P4KE56CA for AC-coupled or floating signal lines like RS-485 or CAN bus.
What is the thermal resistance specification for P4KE56A-E3/54?
P4KE56A-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 define its ability to dissipate transient energy as heat through the leads into the PCB copper. Effective thermal relief - such as wide copper pours connected to both leads - is essential to maintain junction temperature below 175 °C during repetitive surge events.
P4KE56A-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):
- 47.8V
- Voltage - Breakdown (Min):
- 53.2V
- Voltage - Clamping (Max) @ Ipp:
- 77V
- Current - Peak Pulse (10/1000µs):
- 5.2A
- 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)
P4KE56A-E3/54 FAQ
1.How can I place an order for P4KE56A-E3/54 through Aetrix?
Please submit a Request for Quotation (RFQ) for P4KE56A-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 P4KE56A-E3/54 reliable?
The price and inventory of P4KE56A-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 P4KE56A-E3/54 is usually 5 days.
3.What payment methods are accepted for P4KE56A-E3/54?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4KE56A-E3/54 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4KE56A-E3/54?
P4KE56A-E3/54 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4KE56A-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 P4KE56A-E3/54?
For technical support, including P4KE56A-E3/54 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4KE56A-E3/54 requirements.
6.How does Aetrix verify that P4KE56A-E3/54 is sourced from the original manufacturer or authorized distributors?
All P4KE56A-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 P4KE56A-E3/54 meets industry standards.
7.What is the process for return or replacement of P4KE56A-E3/54?
All P4KE56A-E3/54 units undergo pre-shipment inspection (PSI). If there is an issue with P4KE56A-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 P4KE56A-E3/54 part is unused and in its original packaging.
Return procedure for P4KE56A-E3/54:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P4KE56A-E3/54 Tags
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