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Vishay General Semiconductor - Diodes Division P4KE36CA-E3/73
- Part No.:
- P4KE36CA-E3/73
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-204AL, DO-41, Axial
- Datasheet:
-
P4KE36CA-E3/73.pdf
- Description:
- TVS DIODE 30.8VWM 49.9VC DO204AL
- Quantity:
- Payment:
- Shipping:
Inventory:5,350
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Product details
Overview
P4KE36CA-E3/73 from Vishay General Semiconductor is a bidirectional Transient Voltage Suppressor (TVS) diode in DO-41 package, designed for clamping voltage transients on signal or power lines. It features 34.2 V to 37.8 V breakdown voltage (VBR) at 1 mA test current, 30.8 V maximum standoff voltage (VWM), 49.9 V clamping voltage (VC) at 8.0 A peak pulse current, and 400 W peak pulse power rating with 10/1000 μs waveform - used in automotive sensor protection and industrial I/O interface surge suppression.
For engineers reviewing the P4KE36CA-E3/73 datasheet, P4KE36CA-E3/73 pinout, P4KE36CA-E3/73 application, or P4KE36CA-E3/73 equivalent, key selection criteria include bidirectional clamping capability, DO-41 mechanical compatibility, AEC-Q101 qualification status, thermal resistance (RθJL = 66 °C/W), and compliance with IEC 61000-4-2/4-4/4-5 transient immunity requirements.
Technical Context
This device operates as a voltage-clamped shunt protector: during overvoltage events exceeding VWM, it avalanches into low-impedance conduction to divert surge current away from downstream circuitry. Its glass-passivated junction ensures stable breakdown characteristics and low leakage (<1.0 μA at VWM).
The bidirectional configuration enables symmetric clamping for AC-coupled or floating lines without polarity sensitivity; it exhibits identical electrical behavior in both directions, with no cathode marking on the DO-41 body - distinguishing it from unidirectional variants like P4KE36A.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 34.2 V / 37.8 V at 1 mA - defines reliable avalanche initiation range under standardized test conditions |
| VWM | 30.8 V - maximum continuous reverse operating voltage before significant leakage begins |
| VC @ IPPM | 49.9 V at 8.0 A - clamped voltage seen by protected circuit during 10/1000 μs surge event |
| PPPM | 400 W - peak transient power handling capacity per single 10/1000 μs pulse |
| IPPM | 8.0 A - maximum non-repetitive surge current the device can safely clamp |
| TJ max. | +175 °C - maximum junction temperature enabling operation in under-hood automotive environments |
| RθJL | 66 °C/W - thermal resistance from junction to lead, critical for PCB trace heat sinking design |
Pinout & Package
Package: DO-41 (DO-204AL), axial-leaded molded epoxy case with matte tin-plated leads; meets UL 94 V-0 flammability rating and J-STD-002 solderability standard. Bidirectional construction means no polarity marking - both terminals are functionally identical.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (symmetrical) | Transient current path | Either terminal conducts during overvoltage in either direction; no fixed anode/cathode designation |
| Lead 1 / Lead 2 | PCB mounting interface | Leads serve as mechanical attachment and thermal path to PCB copper; RθJL = 66 °C/W assumes 10 mm lead length |
Key Features
| Feature | Design Value |
|---|---|
| Glass passivated junction | Ensures stable VBR tolerance (±5 %) and low leakage (<1.0 μA) across temperature and lifetime |
| AEC-Q101 qualified | Validated for automotive applications including engine control modules and body electronics per stress test requirements |
| 400 W 10/1000 μs pulse rating | Supports IEC 61000-4-5 Level 3 (1 kV line-to-line, 2 kV line-to-ground) surge immunity without derating |
| Low clamping ratio (VC/VBR ≈ 1.35) | Minimizes let-through voltage to protect 3.3 V or 5 V logic interfaces downstream of the TVS |
| DO-41 mechanical compatibility | Enables drop-in replacement in legacy designs using industry-standard axial footprint and lead spacing |
Applications
| Automotive Sensor Protection | Industrial PLC I/O Protection |
|---|---|
Use Scenario: Protecting CAN bus transceivers and analog sensor inputs (e.g., pressure, temperature) from load dump and ISO 7637-2 pulses in vehicle ECUs. IC Role / Device Role: Bidirectional shunt clamping element placed between signal line and ground or supply rail. Use Value: Clamps transients up to 49.9 V while maintaining <1.0 μA leakage at 30.8 V, preserving signal integrity in 12 V automotive systems. | Use Scenario: Safeguarding digital input channels of programmable logic controllers against ESD and inductive switching surges from solenoids or relays. IC Role / Device Role: Primary front-end transient suppressor on 24 V DC input terminals before optocoupler isolation stage. Use Value: Handles 8.0 A peak surge current with 400 W pulse power, enabling robust immunity to IEC 61000-4-4 fast transients (4 kV) without upstream fusing. |
| Consumer Power Adapter Input | Telecom Line Interface Protection |
Use Scenario: Secondary-side overvoltage suppression in AC/DC adapters for USB-C PD and laptop chargers exposed to lightning-induced surges. IC Role / Device Role: Bidirectional clamping device across DC output rails to prevent damage to downstream DC-DC converters. Use Value: Withstands repetitive 10/1000 μs pulses at 0.01 % duty cycle and maintains VWM = 30.8 V to avoid false triggering during normal 24–36 V output regulation. | Use Scenario: Protecting Ethernet PHY interfaces and DSL line drivers from induced surges on twisted-pair telecom lines. IC Role / Device Role: Common-mode transient suppressor bridging differential pair lines to chassis ground in RJ-45 magnetics modules. Use Value: Symmetric clamping ensures balanced protection without skewing differential signaling; DO-41 axial form factor fits compact telecom module layouts. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ36CA | Surface-mount SMB package; same VBR range (34.2–37.8 V), higher IPPM (12.3 A), lower VC (58.1 V) | Requires PCB redesign for SMT placement; better suited for high-density consumer electronics | Select when board space is constrained and reflow assembly is preferred over through-hole |
| 1.5KE36CA | Higher PPPM (1500 W); same DO-41 package and VBR; larger junction area increases capacitance and thermal mass | Better for high-energy lightning surges but slower response due to higher junction capacitance | Select when protecting against IEC 61000-4-5 Level 4 (4 kV line-to-ground) events where energy exceeds 400 W capability |
Compared with SMBJ36CA and 1.5KE36CA, the P4KE36CA-E3/73 offers optimal balance of through-hole manufacturability, AEC-Q101 qualification, and 400 W surge handling - making it ideal for cost-sensitive automotive and industrial designs requiring proven reliability without SMT infrastructure or extreme energy absorption.
Availability
P4KE36CA-E3/73 is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial PLC I/O modules, and telecom line protection requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for P4KE36CA-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, MOSFETs, optoelectronics, and passive components with emphasis on reliability and automotive-grade qualification.
The P4KE36CA-E3/73 belongs to Vishay's TRANSZORB® family of transient voltage suppressors, engineered specifically for robust, bidirectional surge protection in harsh environments including automotive, industrial, and telecommunications infrastructure.
FAQ
What is the breakdown voltage tolerance for P4KE36CA-E3/73?
The P4KE36CA-E3/73 has a specified breakdown voltage (VBR) range of 34.2 V to 37.8 V at 1 mA test current, corresponding to a ±5 % tolerance. This tight tolerance ensures predictable clamping onset across production lots and temperature extremes, critical for protecting sensitive 3.3 V or 5 V logic interfaces downstream of the P4KE36CA-E3/73.
Is P4KE36CA-E3/73 suitable for automotive applications?
Yes, the P4KE36CA-E3/73 is AEC-Q101 qualified and rated for operation from –55 °C to +175 °C junction temperature. Its glass-passivated junction, DO-41 mechanical robustness, and 400 W surge rating make it appropriate for under-hood and cabin applications such as engine control sensors, body control modules, and infotainment power rails - all validated per P4KE36CA-E3/73's official Vishay qualification report.
How does the bidirectional nature of P4KE36CA-E3/73 affect its circuit placement?
The P4KE36CA-E3/73 has no polarity marking and behaves identically in both directions, allowing placement across any two nodes subject to bidirectional transients - such as differential signal pairs, AC-coupled lines, or floating power rails. Unlike unidirectional TVS diodes, the P4KE36CA-E3/73 eliminates orientation errors during manual assembly and supports symmetrical clamping without external biasing networks.
What is the maximum clamping voltage of P4KE36CA-E3/73 under surge conditions?
The P4KE36CA-E3/73 clamps to a maximum of 49.9 V when subjected to its rated 8.0 A peak pulse current (IPPM) with a 10/1000 μs waveform. This VC value is measured at the device terminals and represents the highest voltage imposed on protected circuitry during worst-case surge events - a key parameter for ensuring downstream ICs remain within absolute maximum ratings.
Does P4KE36CA-E3/73 require heatsinking for standard operation?
No additional heatsink is required for P4KE36CA-E3/73 under typical transient conditions, as its 400 W rating applies to single non-repetitive pulses. However, for repetitive surge scenarios, thermal design must account for RθJL = 66 °C/W and RθJA = 100 °C/W - meaning adequate PCB copper area (≥1 cm² per lead) and lead length ≥10 mm are recommended to maintain TJ ≤ 175 °C during sustained duty cycles.
P4KE36CA-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:
- Active
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 30.8V
- Voltage - Breakdown (Min):
- 34.2V
- Voltage - Clamping (Max) @ Ipp:
- 49.9V
- Current - Peak Pulse (10/1000µs):
- 8A
- 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)
P4KE36CA-E3/73 FAQ
1.How can I place an order for P4KE36CA-E3/73 through Aetrix?
Please submit a Request for Quotation (RFQ) for P4KE36CA-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 P4KE36CA-E3/73 reliable?
The price and inventory of P4KE36CA-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 P4KE36CA-E3/73 is usually 5 days.
3.What payment methods are accepted for P4KE36CA-E3/73?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4KE36CA-E3/73 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4KE36CA-E3/73?
P4KE36CA-E3/73 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4KE36CA-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 P4KE36CA-E3/73?
For technical support, including P4KE36CA-E3/73 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4KE36CA-E3/73 requirements.
6.How does Aetrix verify that P4KE36CA-E3/73 is sourced from the original manufacturer or authorized distributors?
All P4KE36CA-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 P4KE36CA-E3/73 meets industry standards.
7.What is the process for return or replacement of P4KE36CA-E3/73?
All P4KE36CA-E3/73 units undergo pre-shipment inspection (PSI). If there is an issue with P4KE36CA-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 P4KE36CA-E3/73 part is unused and in its original packaging.
Return procedure for P4KE36CA-E3/73:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P4KE36CA-E3/73 Tags
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