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Taiwan Semiconductor Corporation P4KE36CA
- Part No.:
- P4KE36CA
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-204AL, DO-41, Axial
- Datasheet:
-
P4KE36CA.pdf
- Description:
- TVS DIODE 30.8VWM 49.9VC DO204AL
- Quantity:
- Payment:
- Shipping:
Inventory:6,901
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Product details
Overview
P4KE36CA from Taiwan Semiconductor is a bidirectional transient voltage suppressor (TVS) diode designed for high-energy surge protection in DC power rails and signal lines. It features a 36V nominal standoff voltage, 400W peak pulse power rating at 10/1000μs, clamping voltage of 52.0V at 8.0A peak pulse current, and operates across -55°C to +175°C junction temperature range - deployed in automotive lighting control modules and industrial I/O interface protection.
For engineers reviewing the P4KE36CA datasheet, P4KE36CA pinout, P4KE36CA application, or P4KE36CA equivalent, key selection criteria include bidirectional clamping capability, DO-41 package compatibility, low leakage (<1μA at 29.1V), fast response time (<5.0ns), and AEC-Q101 qualification for automotive-grade reliability.
Technical Context
The P4KE36CA implements a silicon avalanche diode structure optimized for unidirectional and bidirectional transient suppression. Its breakdown voltage is specified at 32.4–39.6V with 1mA test current, and it maintains stable clamping performance up to 175°C junction temperature.
It complies with ANSI/IEEE C62.35 for peak pulse power testing and delivers 52.0V maximum clamping voltage at 8.0A IPPM under 10/1000μs waveform - enabling robust protection against EFT, lightning-induced surges, and inductive switching transients without forward conduction during normal operation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Nominal Voltage | 36V - defines rated working stand-off voltage before avalanche onset |
| Breakdown Voltage VBR | 32.4–39.6V @ 1mA - ensures reliable triggering within tight tolerance band |
| Working Stand-off Voltage VWM | 29.1V - maximum continuous reverse voltage without significant leakage |
| Peak Pulse Power PPK | 400W @ 10/1000μs - sustains single high-energy surge events per IEC 61000-4-5 |
| Clamping Voltage VC | 52.0V @ 8.0A - limits downstream voltage stress during transient events |
| Leakage Current ID | <1μA @ 29.1V - minimizes standby power loss and avoids false triggering |
| Junction Temperature Range | -55°C to +175°C - supports under-hood automotive and industrial ambient conditions |
Pinout & Package
Package: DO-204AL (DO-41), axial leaded, glass-passivated silicon junction. Cathode band marking indicates polarity for unidirectional variants; P4KE36CA is bidirectional and marked with part number only per Taiwan Semiconductor specification.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode / Cathode (symmetrical) | Bidirectional avalanche terminals | Either end serves as cathode or anode depending on transient polarity - no fixed polarity required in circuit layout |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive applications including engine control units and body electronics |
| 400W surge capability | Withstands 10/1000μs transients per IEC 61000-4-5 Level 4 without degradation |
| Fast response time | <5.0ns turn-on for bidirectional transients - faster than typical MOVs or polymer TVS |
| Low clamping ratio | VC/VBR = 52.0/36 ≈ 1.44 - tighter voltage limiting than standard Zener-based protectors |
| Halogen-free & RoHS compliant | Meets IEC 61249-2-21 and EU Directive 2011/65/EU for green manufacturing |
Applications
| Automotive LED Headlamp Driver Protection | Industrial PLC Digital Input Protection |
|---|---|
Use Scenario: Protects LED driver ICs from load dump and alternator ripple transients in 12V/24V vehicle systems. IC Role / Device Role / Timing Role: Bidirectional TVS placed across input rail to clamp both positive and negative spikes before they reach controller ICs. Use Value: Prevents latch-up or gate oxide damage in buck controllers by limiting voltage to ≤52.0V during 400W surges. |
Use Scenario: Shields 24V digital input circuits in programmable logic controllers from EFT bursts and field-wiring induced noise. IC Role / Device Role / Timing Role: Front-end transient suppressor on isolated input channel, operating in parallel with optocoupler input stage. Use Value: Enables compliance with IEC 61000-4-4 (EFT) Level 4 by clamping 5kV/5kHz bursts to safe levels for downstream Schmitt triggers. |
| Smart Building HVAC Sensor Interface | Telecom Power Supply Surge Protection |
Use Scenario: Safeguards RS-485 transceivers and temperature sensors connected to long field wiring exposed to lightning-induced surges. IC Role / Device Role / Timing Role: Common-mode TVS on differential bus lines, leveraging bidirectional symmetry for polarity-agnostic protection. Use Value: Maintains signal integrity by limiting common-mode transients to <52.0V while preserving low capacitance (<100pF) for 1Mbps data rates. |
Use Scenario: Protects secondary-side DC outputs of telecom AC/DC adapters from surge coupling via shared ground paths. IC Role / Device Role / Timing Role: Final-stage overvoltage clamp on +48V output rail, coordinated with upstream MOV and fuse. Use Value: Provides precise clamping at 52.0V to prevent overvoltage shutdown of PoE PD controllers without sacrificing efficiency. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Littelfuse SMAJ36CA | Same DO-214AC (SMA) package; 400W rating; VBR 32.4–39.6V; slightly higher VC (53.3V) | Surface-mount footprint requires PCB redesign; better thermal dissipation in high-density layouts | Select when automated assembly and space-constrained designs outweigh through-hole advantages |
| ON Semiconductor 1.5KE36CA | Higher PPK (1500W); larger DO-201AD package; same VBR/VC specs; not AEC-Q101 qualified | Used in non-automotive industrial power supplies where higher surge margin is prioritized over qualification | Choose for legacy 1.5kW surge requirements where board real estate allows larger case size |
Compared with SMAJ36CA and 1.5KE36CA, the P4KE36CA offers AEC-Q101 qualification in a compact DO-41 through-hole package ideal for automotive serviceability and prototyping, while maintaining identical electrical clamping performance and lower system-level cost in medium-volume production.
Availability
P4KE36CA is available at Aetrix Electronics and suitable for automotive lighting systems, industrial PLC I/O modules, smart building sensor interfaces, and telecom power supply protection requiring stable component supply and long-term lifecycle support.
Supply support for P4KE36CA 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
Taiwan Semiconductor Corporation (TSC) is a vertically integrated analog and discrete semiconductor manufacturer headquartered in Hsinchu, Taiwan, serving global automotive, industrial, and consumer markets since 1979.
The P4KE series belongs to TSC's transient voltage suppressor product line, engineered specifically for high-reliability surge immunity in harsh environments - emphasizing AEC-Q101 compliance, wide temperature operation, and consistent clamping performance across production lots.
FAQ
What does the 'CA' suffix indicate in P4KE36CA?
The 'CA' suffix in P4KE36CA denotes bidirectional configuration - meaning the device provides symmetrical transient suppression for both positive and negative voltage excursions. Unlike unidirectional 'C' variants, P4KE36CA has no cathode marking and functions identically regardless of terminal orientation in the circuit, making it ideal for AC-coupled or floating signal line protection.
Is P4KE36CA suitable for automotive applications?
Yes, P4KE36CA is AEC-Q101 qualified per Taiwan Semiconductor documentation, confirming its suitability for automotive use cases including engine control, body electronics, and lighting systems. Its -55°C to +175°C operating range, robust surge handling, and halogen-free construction meet stringent automotive reliability and environmental requirements.
How does P4KE36CA differ from P4KE36A?
P4KE36A is unidirectional with a cathode band marking and forward voltage drop (~3.5V), while P4KE36CA is bidirectional with symmetrical characteristics in both directions and no polarity marking. P4KE36CA clamps transients of either polarity without requiring orientation during placement, whereas P4KE36A must be installed with correct anode/cathode alignment relative to the protected rail.
What is the maximum clamping voltage of P4KE36CA under surge conditions?
The maximum clamping voltage of P4KE36CA is 52.0V at 8.0A peak pulse current under the standardized 10/1000μs waveform. This value represents the upper limit of voltage seen by downstream components during worst-case transient events and is guaranteed across the full operating temperature range per Taiwan Semiconductor's datasheet specifications.
Can P4KE36CA replace P4KE36 in an existing design?
No - P4KE36 is unidirectional and lacks bidirectional capability. Replacing P4KE36 with P4KE36CA may result in improper clamping behavior if the original circuit relies on directional conduction or forward-bias operation. P4KE36CA should only replace other CA-suffix parts or be used in new designs where symmetrical protection is explicitly required.
P4KE36CA Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Package/Case:
- DO-204AL, DO-41, Axial
- Series:
- P4KE
- Packaging:
- Tape & Reel (TR)
- 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):
- 8.4A
- 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 FAQ
1.How can I place an order for P4KE36CA through Aetrix?
Please submit a Request for Quotation (RFQ) for P4KE36CA 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 reliable?
The price and inventory of P4KE36CA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P4KE36CA is usually 5 days.
3.What payment methods are accepted for P4KE36CA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4KE36CA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4KE36CA?
P4KE36CA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4KE36CA 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?
For technical support, including P4KE36CA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4KE36CA requirements.
6.How does Aetrix verify that P4KE36CA is sourced from the original manufacturer or authorized distributors?
All P4KE36CA 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 meets industry standards.
7.What is the process for return or replacement of P4KE36CA?
All P4KE36CA units undergo pre-shipment inspection (PSI). If there is an issue with P4KE36CA, 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 part is unused and in its original packaging.
Return procedure for P4KE36CA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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