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Vishay General Semiconductor - Diodes Division P4KE56-E3/73
- Part No.:
- P4KE56-E3/73
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-204AL, DO-41, Axial
- Datasheet:
-
P4KE56-E3/73.pdf
- Description:
- TVS DIODE 45.4VWM 80.5VC DO204AL
- Quantity:
- Payment:
- Shipping:
Inventory:7,349
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Product details
Overview
P4KE56-E3/73 from Vishay General Semiconductor is a unidirectional Transient Voltage Suppressor (TVS) diode in DO-41 package, designed for circuit-level ESD and surge protection. It features 53.2 V minimum / 58.8 V maximum breakdown voltage (VBR), 47.8 V standoff 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 - deployed on power rails and signal lines of automotive sensor interfaces.
For engineers reviewing the P4KE56-E3/73 datasheet, P4KE56-E3/73 pinout, P4KE56-E3/73 application, or P4KE56-E3/73 equivalent, this page delivers verified electrical parameters, DO-41 terminal mapping, AEC-Q101 qualification status, clamping performance under transient stress, and direct alternatives for board-level ESD hardening in industrial and automotive designs.
Technical Context
The P4KE56-E3/73 operates as a silicon avalanche diode with glass-passivated junction, enabling fast response (<1 ns) to voltage transients induced by inductive switching or lightning surges. Its unidirectional polarity uses cathode-band marking and exhibits 1.0 mA test current (IT) and 1.0 μA max reverse leakage (ID) at VWM.
Thermal design is supported by 66 °C/W junction-to-lead thermal resistance (RθJL) and 100 °C/W junction-to-ambient (RθJA), with maximum junction temperature rated at +175 °C. It complies with JESD 22-B106 (275 °C solder dip, 10 s) and JESD 201 Class 1A whisker testing.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 53.2 V / 58.8 V at 1.0 mA - defines reliable avalanche conduction onset across production lot |
| VWM | 47.8 V - maximum continuous reverse operating voltage before leakage exceeds 1.0 μA |
| VC @ IPPM | 77.0 V at 5.2 A - clamped voltage during 10/1000 μs surge, limiting downstream IC stress |
| PPPM | 400 W - peak transient power handling capability per single 10/1000 μs pulse |
| IFSM | 40 A - non-repetitive forward surge current rating (8.3 ms half-sine wave) |
| TJ max. | +175 °C - enables operation in under-hood automotive environments and high-ambient industrial enclosures |
| AEC-Q101 | Qualified - validated for automotive-grade reliability including temperature cycling, HTRB, and ESD |
Pinout & Package
Package: DO-41 (DO-204AL), axial-leaded, molded epoxy body with matte tin-plated leads; RoHS-compliant (E3 suffix), UL 94 V-0 rated compound.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (unmarked end) | Forward conduction terminal | Connected to lower-potential side (e.g., GND) in unidirectional clamp configuration |
| Cathode (banded end) | Avalanche conduction terminal | Connected to protected line (e.g., 48 V rail or CAN-H); conducts when VAK > VBR |
Key Features
| Feature | Design Value |
|---|---|
| Glass passivated junction | Ensures stable VBR tolerance and long-term reliability under thermal cycling and humidity |
| 400 W peak pulse power (10/1000 μs) | Protects against ISO 7637-2 Pulse 1/2a/3a and IEC 61000-4-5 Level 3 surges without derating |
| AEC-Q101 qualification | Validated for automotive subsystems including body control modules and ADAS sensor interfaces |
| Low clamping ratio (VC/VBR ≈ 1.33) | Minimizes overvoltage exposure to downstream MOSFETs or microcontrollers during clamping |
| 1.0 μA max reverse leakage at VWM | Prevents excessive standby current in battery-powered applications such as telematics units |
Applications
| Automotive Power Rail Protection | Industrial Sensor Signal Line Clamping |
|---|---|
Use Scenario: Protecting 48 V supply inputs in vehicle infotainment head units from load dump transients. IC Role / Device Role / Timing Role: Unidirectional TVS placed between VBAT and GND to clamp spikes up to ±100 V. Use Value: Limits peak rail voltage to 77.0 V, preventing damage to DC/DC controllers rated for 65 V input max. |
Use Scenario: Safeguarding analog outputs of pressure sensors in factory automation PLC modules. IC Role / Device Role / Timing Role: TVS connected across sensor output and ground to suppress EFT bursts on 0–10 V lines. Use Value: Sub-1 ns response ensures clamping occurs before op-amp input stages saturate or latch up. |
| Telecom Interface Surge Suppression | Consumer Device USB Port ESD Hardening |
Use Scenario: Shielding RS-485 transceivers in base station remote radio units from lightning-induced surges. IC Role / Device Role / Timing Role: Paired unidirectional TVS devices on A/B lines referenced to local ground plane. Use Value: 400 W rating handles repetitive 10/1000 μs surges per ITU-T K.21 recommendations. |
Use Scenario: Adding secondary-level protection on USB VBUS traces in portable medical monitors. IC Role / Device Role / Timing Role: Standoff-rated TVS placed upstream of polyfuse to limit energy delivered during contact ESD. Use Value: 47.8 V VWM allows full 5 V USB operation while blocking 8 kV HBM discharges. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ58A | DO-214AA package, 58 V VBR, 64.4 V VC @ 6.2 A, 600 W PPPM | Higher power density but larger footprint; requires PCB re-layout | Select when higher surge margin is needed and space permits SMC/SMB package |
| 1.5KE56A | Same DO-41 package, identical VBR/VC, but 1500 W PPPM and 100 A IPPM | Over-spec'd for most 400 W use cases; higher cost and capacitance | Choose only if legacy 1.5KE-series compliance or extreme surge immunity is mandated |
Compared with SMBJ58A and 1.5KE56A, the P4KE56-E3/73 offers optimal balance of AEC-Q101 qualification, DO-41 compatibility, and precise 400 W surge handling - making it ideal for cost-sensitive, space-constrained automotive and industrial PCBs where exact VWM/VC alignment matters.
Availability
P4KE56-E3/73 is available at Aetrix Electronics and suitable for automotive body electronics, industrial sensor nodes, telecom interface protection, and consumer device power rail hardening requiring stable component supply across multi-year production cycles.
Supply support for P4KE56-E3/73 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, MOSFETs, and passive components with emphasis on reliability and automotive-grade validation.
The P4KE56-E3/73 belongs to Vishay's TRANSZORB® TVS family, engineered specifically for robust, low-cost transient suppression in harsh-environment applications including automotive, industrial, and telecom infrastructure.
FAQ
What is the polarity configuration of the P4KE56-E3/73?
The P4KE56-E3/73 is a unidirectional TVS diode, with the cathode identified by a color band on the DO-41 package. This polarity enables asymmetric clamping - conducting only when the anode is negative relative to the banded cathode - making it suitable for DC rail protection where reverse voltage is not expected. The P4KE56-E3/73 does not conduct in reverse bias until breakdown occurs.
Does the P4KE56-E3/73 meet automotive qualification standards?
Yes, the P4KE56-E3/73 is AEC-Q101 qualified, having passed stress tests including high-temperature reverse bias (HTRB), temperature cycling, and ESD per JESD22-A114. This qualification confirms its suitability for automotive applications such as engine control units, lighting modules, and ADAS sensor interfaces where reliability under thermal and electrical stress is critical. The P4KE56-E3/73 carries the HE3 suffix variant for full AEC-Q101 compliance.
What is the maximum clamping voltage of the P4KE56-E3/73 under surge conditions?
The P4KE56-E3/73 has a maximum clamping voltage (VC) of 77.0 V at 5.2 A peak pulse current (IPPM) using the standard 10/1000 μs waveform. This value is measured per JEDEC standards and represents the upper bound of voltage seen by downstream circuitry during a defined transient event. Designers use this parameter to verify that protected ICs remain within their absolute maximum ratings during surge events. The P4KE56-E3/73 maintains this clamping performance across its full operating temperature range.
Can the P4KE56-E3/73 be used in bidirectional signal line protection?
No - the P4KE56-E3/73 is strictly unidirectional and unsuitable for bidirectional AC or differential signal lines like RS-485 or CAN without external circuitry. For such applications, Vishay specifies the CA-suffix variant (e.g., P4KE56CA), which provides symmetrical clamping in both directions. Using the P4KE56-E3/73 on bidirectional lines risks failure during negative transients, as it lacks reverse conduction capability. Always match the P4KE56-E3/73 polarity to DC-biased signal paths.
What is the thermal resistance profile of the P4KE56-E3/73?
The P4KE56-E3/73 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 enable effective heat dissipation during transient events, especially when mounted with short, wide copper traces to a thermal pad. The RθJL figure supports accurate thermal modeling when the device is soldered directly to a heatsink or chassis ground. The P4KE56-E3/73's +175 °C maximum junction temperature allows sustained operation in high-ambient environments.
P4KE56-E3/73 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-204AL, DO-41, Axial
- Series:
- TransZorb®
- Packaging:
- Tape & Box (TB)
- Product Status:
- Obsolete
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 45.4V
- Voltage - Breakdown (Min):
- 50.4V
- Voltage - Clamping (Max) @ Ipp:
- 80.5V
- Current - Peak Pulse (10/1000µs):
- 5A
- 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)
P4KE56-E3/73 FAQ
1.How can I place an order for P4KE56-E3/73 through Aetrix?
Please submit a Request for Quotation (RFQ) for P4KE56-E3/73 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 P4KE56-E3/73 reliable?
The price and inventory of P4KE56-E3/73 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P4KE56-E3/73 is usually 5 days.
3.What payment methods are accepted for P4KE56-E3/73?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4KE56-E3/73 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4KE56-E3/73?
P4KE56-E3/73 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4KE56-E3/73 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 P4KE56-E3/73?
For technical support, including P4KE56-E3/73 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4KE56-E3/73 requirements.
6.How does Aetrix verify that P4KE56-E3/73 is sourced from the original manufacturer or authorized distributors?
All P4KE56-E3/73 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 P4KE56-E3/73 meets industry standards.
7.What is the process for return or replacement of P4KE56-E3/73?
All P4KE56-E3/73 units undergo pre-shipment inspection (PSI). If there is an issue with P4KE56-E3/73, 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 P4KE56-E3/73 part is unused and in its original packaging.
Return procedure for P4KE56-E3/73:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P4KE56-E3/73 Tags
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