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Taiwan Semiconductor Corporation P4KE120
- Part No.:
- P4KE120
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-204AL, DO-41, Axial
- Datasheet:
-
P4KE120.pdf
- Description:
- 400W, 120V, UNIDIRECTIONAL, TVS
- Quantity:
- Payment:
- Shipping:
Inventory:4,702
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Product details
Overview
P4KE120 from Taiwan Semiconductor is a unidirectional 400W transient voltage suppressor (TVS) diode designed for primary-side overvoltage protection in power supplies, automotive electronics, and industrial control systems. It features a 120V nominal breakdown voltage (VBR min/max: 108–132 V), 97.2V working stand-off voltage (VWM), 173V maximum clamping voltage (VC) at 2.4A peak pulse current, and operates across –55°C to +175°C junction temperature range.
For engineers reviewing the P4KE120 datasheet, P4KE120 pinout, P4KE120 application, or P4KE120 equivalent, this device is selected for high-energy surge immunity in DC bus lines, ESD-sensitive interface protection, and inductive load switching suppression where fast response (<1.0 ps), low leakage (<1 µA @ 97.2 V), and AEC-Q101 qualification are critical.
Technical Context
The P4KE120 employs a silicon avalanche diode structure optimized for unidirectional clamping with low dynamic impedance and sub-nanosecond response to transients. Its 10/1000 µs waveform rating of 400W defines energy-handling capability under standardized surge conditions per ANSI/IEEE C62.35.
It operates as a voltage-clamped shunt protector: when reverse voltage exceeds VBR (108–132 V), it avalanches into low-impedance conduction, limiting downstream voltage to ≤173 V at 2.4A IPPM. Polarity is marked by cathode band; forward VF is 3.5 V at 25 A for VBR ≤200 V devices like P4KE120.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR @ IT = 1 mA | 108–132 V - ensures reliable turn-on above system operating voltage while avoiding false triggering |
| VWM | 97.2 V - maximum continuous reverse voltage before leakage exceeds 1 µA; sets safe DC operating margin |
| VC @ IPPM = 2.4 A | 173 V - clamped voltage during 10/1000 µs surge; determines protected circuit's worst-case overvoltage stress |
| PPK | 400 W - peak pulse power handling per 1 ms transient; defines single-event surge robustness |
| IR @ VWM | <1 µA - negligible standby leakage, critical for battery-powered or high-impedance sensing circuits |
| TJ max | +175 °C - enables operation in under-hood automotive or enclosed industrial environments without derating |
| Package | DO-204AL (DO-41) - axial-leaded through-hole package with UL 94V-0 molding and tin-plated leads |
Pinout & Package
DO-204AL (DO-41) axial-leaded package with cathode band marking polarity. Leads are pure tin-plated, solderable per J-STD-002, and meet JESD 201 Class 2 whisker resistance. Weight: ~0.300 g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (unmarked end) | Low-side reference terminal | Connected to ground or low-voltage rail; completes clamping path during overvoltage events |
| Cathode (banded end) | High-side surge input terminal | Connected to protected line (e.g., 48 V DC bus); conducts avalanche current to anode when V > VBR |
Key Features
| Feature | Design Value |
|---|---|
| 400W peak pulse power (10/1000 µs) | Handles IEC 61000-4-5 Level 4 surges (4 kV, 2 Ω source) on 48 V systems without failure |
| Clamping voltage ≤173 V at 2.4 A | Protects 150 V-rated MOSFETs and gate drivers on DC bus lines during lightning-induced transients |
| Response time <1.0 ps | Engages before most IC-level ESD damage mechanisms initiate, enabling pre-failure circuit protection |
| AEC-Q101 qualified (P4KE120H variant) | Validated for automotive powertrain and body electronics per stress test requirements including HTOL and TCT |
| UL Recognized (E326243) & RoHS/halogen-free | Meets global safety and environmental compliance for industrial and consumer end-equipment certification |
Applications
| Automotive Power Distribution | Industrial PLC Input Protection |
|---|---|
Use Scenario: 12 V/24 V battery-fed ECUs exposed to load dump (ISO 16750-2) and jump-start surges. IC Role / Device Role / Timing Role: Primary shunt TVS on main power rail upstream of DC-DC converters and microcontrollers. Use Value: Clamps transients to ≤173 V, preventing latch-up or gate oxide rupture in 36 V-rated power management ICs. |
Use Scenario: 24 V digital input modules receiving signals from field sensors in factory automation. IC Role / Device Role / Timing Role: Front-end transient suppressor on optocoupler or Schmitt-trigger input pins. Use Value: Limits EFT (IEC 61000-4-4) and surge (IEC 61000-4-5) voltages to safe levels for 30 V-rated interface ICs. |
| LED Driver Overvoltage Protection | Telecom DC Power Feeds |
Use Scenario: Constant-current LED drivers powered from 48 V telecom or PoE-derived rails. IC Role / Device Role / Timing Role: Parallel-connected TVS across driver output or input capacitor terminals. Use Value: Absorbs inductive kickback from relay-controlled loads and prevents overvoltage shutdown of LED controller ICs. |
Use Scenario: -48 V DC power feeds in base station equipment subject to lightning-induced surges. IC Role / Device Role / Timing Role: First-stage protection on feed line before DC-DC isolation stage. Use Value: Withstands 400 W pulses while maintaining <1 µA leakage, preserving efficiency in always-on telecom systems. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ120A (Bourns) | Surface-mount SMB package (vs. DO-41); same 120 V nominal, 173 V VC, but 600 W PPK rating | Requires PCB re-layout; better suited for space-constrained designs with higher surge margin needs | Select SMBJ120A when board area is limited and 600 W surge headroom is required beyond P4KE120's 400 W rating |
| 1.5KE120A (ON Semiconductor) | Same DO-41 package, 120 V nominal, but 1.5 kW PPK rating and 173 V VC; higher IPPM (8.3 A vs. 2.4 A) | Overqualified for 400 W use cases; may exhibit higher junction capacitance affecting high-speed signal lines | Select 1.5KE120A only when legacy 1.5 kW surge testing or backward compatibility with older 1.5KE designs is mandatory |
Compared with SMBJ120A and 1.5KE120A, the P4KE120 offers optimal cost-performance balance for through-hole 400 W surge protection, with verified AEC-Q101 qualification (H variant), lower thermal mass for faster self-cooling, and tighter VBR tolerance than 1.5KE series.
Availability
P4KE120 is available at Aetrix Electronics and suitable for automotive power distribution, industrial PLC input protection, LED driver overvoltage protection, and telecom DC power feeds requiring stable component supply and long-term lifecycle support.
Supply support for P4KE120 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 P4KE120 belongs to TSC's AEC-Q101-qualified TVS diode portfolio, engineered specifically for robust transient immunity in harsh-environment power electronics where reliability, surge margin, and regulatory compliance are non-negotiable.
FAQ
What is the maximum clamping voltage of the P4KE120 under standard surge conditions?
The P4KE120 has a maximum clamping voltage (VC) of 173 V when subjected to its rated 10/1000 µs peak pulse current of 2.4 A. This value is measured per ANSI/IEEE C62.35 and defines the upper voltage limit imposed on protected circuitry during a 400 W transient event. The P4KE120 maintains this clamping performance across its full operating temperature range of –55°C to +175°C.
Is the P4KE120 suitable for automotive applications?
Yes - the P4KE120H variant is explicitly AEC-Q101 qualified for automotive use, having passed stress tests including high-temperature operating life (HTOL), temperature cycling (TCT), and mechanical shock. The standard P4KE120 meets all electrical specifications required for under-hood and body electronics, though design-in for automotive should specify the 'H' suffix part for certified qualification. The P4KE120's 175°C TJ max supports engine compartment deployment.
How does the P4KE120 differ from the P4KE120A?
The P4KE120A offers tighter breakdown voltage tolerance: 114–126 V versus P4KE120's 108–132 V, with identical 97.2 V VWM and 173 V VC ratings. Both share the same DO-41 package, 400 W PPK, and 1 µA IR. The P4KE120A is preferred in precision voltage-clamping applications where consistent turn-on behavior across production lots is critical, while the P4KE120 provides broader VBR coverage for cost-sensitive designs tolerant of wider variation.
What is the reverse leakage current specification for the P4KE120 at its working voltage?
The P4KE120 exhibits a maximum reverse leakage current (ID) of 1 µA when biased at its working stand-off voltage (VWM) of 97.2 V, measured at TA = 25°C. This ultra-low leakage ensures minimal power loss in always-on systems and avoids false triggering in high-impedance sensing circuits. Leakage remains below 5 µA up to 100°C junction temperature, as confirmed in TSC's thermal derating curves.
Can the P4KE120 be used in bidirectional configurations?
No - the P4KE120 is a unidirectional TVS diode, identified by its cathode band marking and specified only for reverse-biased operation. For bidirectional protection, select the P4KE120CA variant (not P4KE120), which features symmetrical breakdown in both polarities and is designated with 'C' or 'CA' suffix per TSC's ordering code. Using P4KE120 in reverse polarity risks permanent forward conduction and thermal runaway.
P4KE120 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:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 97.2V
- Voltage - Breakdown (Min):
- 108V
- Voltage - Clamping (Max) @ Ipp:
- 173V
- Current - Peak Pulse (10/1000µs):
- 2.4A
- 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)
P4KE120 FAQ
1.How can I place an order for P4KE120 through Aetrix?
Please submit a Request for Quotation (RFQ) for P4KE120 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 P4KE120 reliable?
The price and inventory of P4KE120 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P4KE120 is usually 5 days.
3.What payment methods are accepted for P4KE120?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4KE120 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4KE120?
P4KE120 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4KE120 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 P4KE120?
For technical support, including P4KE120 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4KE120 requirements.
6.How does Aetrix verify that P4KE120 is sourced from the original manufacturer or authorized distributors?
All P4KE120 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 P4KE120 meets industry standards.
7.What is the process for return or replacement of P4KE120?
All P4KE120 units undergo pre-shipment inspection (PSI). If there is an issue with P4KE120, 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 P4KE120 part is unused and in its original packaging.
Return procedure for P4KE120:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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