My Inquiry
My Account
Taiwan Semiconductor Corporation P4KE120CA
- Part No.:
- P4KE120CA
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-204AL, DO-41, Axial
- Datasheet:
-
P4KE120CA.pdf
- Description:
- TVS DIODE 102VWM 165VC DO204AL
- Quantity:
- Payment:
- Shipping:
Inventory:7,781
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
P4KE120CA 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 120V nominal breakdown voltage (VBR min/max: 108–132V at 1mA), 97.2V working stand-off voltage (VWM), 173V maximum clamping voltage (VC) at 2.4A peak pulse current, and 400W peak pulse power rating per 10/1000μs waveform - deployed in automotive lighting control and industrial I/O interface protection.
For engineers reviewing the P4KE120CA datasheet, P4KE120CA pinout, P4KE120CA application, or P4KE120CA equivalent, this device serves as a critical front-end safeguard against ESD, lightning-induced surges, and inductive switching transients in systems requiring AEC-Q101-qualified reliability and UL recognition (E-326243).
Technical Context
The P4KE120CA operates as a bidirectional avalanche diode with symmetrical clamping behavior in both polarities, enabling robust protection of AC-coupled or floating signal paths without polarity concerns. Its low dynamic impedance ensures rapid voltage limiting during transients, while its <1.0ps response time (unidirectional) and 5.0ns (bidirectional) guarantees sub-nanosecond turn-on under fast-rising threats like EFT and contact ESD.
Thermal performance is defined by a 175°C maximum junction temperature and -55°C to +175°C operating range, supported by DO-204AL (DO-41) package construction using UL 94V-0 molding compound and pure tin-plated leads compliant with J-STD-002 solderability and JESD201 Class 2 whisker resistance.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 97.2 V - Maximum continuous reverse voltage before significant leakage; defines safe operating margin below clamping threshold. |
| VBR @ IT=1mA | 108–132 V - Breakdown voltage range confirming reliable avalanche initiation across production lot and temperature. |
| VC @ IPPM=2.4A | 173 V - Clamped voltage during 10/1000μs surge; determines maximum stress imposed on downstream circuitry. |
| PPK | 400 W - Peak pulse power handling capability; validates survivability against IEC 61000-4-5 Level 4 surges. |
| ID @ VWM | ≤1 μA - Reverse leakage current at stand-off voltage; ensures minimal power loss and signal integrity in standby. |
| TJ max | 175 °C - Maximum junction temperature; enables operation in under-hood automotive and high-ambient industrial environments. |
| Package | DO-204AL (DO-41) - Standard axial-leaded through-hole package with 0.300g mass, UL 94V-0 rated epoxy, and RoHS/halogen-free compliance. |
Pinout & Package
DO-204AL (DO-41) package: axial-leaded, cylindrical glass-passivated body with cathode band marking for unidirectional variants; P4KE120CA is bidirectional and marked without polarity band - terminals are non-polarized and electrically symmetric.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode / Cathode (symmetrical) | Bidirectional avalanche junction | Either terminal functions identically as input/output under positive or negative transients - no PCB polarity orientation required. |
| Lead 1 / Lead 2 | Current path for surge conduction | Leads carry full IPPM (2.4A) during clamping; require ≥0.375" (9.5mm) copper pad thermal relief per JEDEC standard. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive applications including engine control modules and body electronics requiring zero-failure reliability under thermal cycling and humidity stress. |
| 400W 10/1000μs surge rating | Withstands repeated IEC 61000-4-5 Combination Wave surges up to 4kV open-circuit / 2kA short-circuit without degradation. |
| 173V clamping at 2.4A | Limits transient overvoltage to ≤1.4× VWM, protecting 100V-rated MOSFETs, op-amps, and microcontroller I/O pins from destructive overstress. |
| UL Recognized (E-326243) | Meets UL 497B requirements for primary protector classification - supports safety-certified system-level designs in industrial and telecom equipment. |
| RoHS & halogen-free | Complies with IEC 61249-2-21 and EU Directive 2011/65/EU - suitable for green manufacturing and export to regulated markets. |
Applications
| Automotive LED Headlamp Driver | Industrial PLC Digital Input Module |
|---|---|
|
Use Scenario: Protects LED driver ICs and MOSFET switches from load-dump transients (ISO 7637-2 Pulse 5a) and alternator ripple spikes. IC Role / Device Role / Timing Role: Front-end bidirectional clamp placed directly across power rail input prior to DC-DC converter stage. Use Value: Limits rail voltage to ≤173V during 120V load dump events, preventing gate oxide rupture in 200V-rated power FETs. |
Use Scenario: Shields 24V digital input optocouplers and level-shifters from field-wiring induced surges and EFT bursts (IEC 61000-4-4). IC Role / Device Role / Timing Role: Standoff-clamp TVS connected between input line and common, operating in parallel with series current-limiting resistor. Use Value: Clamps 4kV EFT pulses to <173V within 5ns, preserving optocoupler CTR stability and eliminating false triggering. |
| Smart Building HVAC Sensor Node | Medical Diagnostic Equipment Power Interface |
|
Use Scenario: Guards RS-485 transceivers and microcontroller GPIOs against electrostatic discharge from HVAC duct metal contact and maintenance personnel. IC Role / Device Role / Timing Role: Bidirectional TVS placed across differential bus lines (A/B) and referenced to local ground plane. Use Value: Suppresses ±8kV contact ESD (IEC 61000-4-2) to <173V, maintaining data integrity and avoiding transceiver latch-up. |
Use Scenario: Safeguards isolated AC/DC power supply inputs in diagnostic imaging devices exposed to hospital-grade grounding faults and surge events. IC Role / Device Role / Timing Role: Primary-stage TVS mounted at mains entry point, upstream of EMI filter and bridge rectifier. Use Value: Absorbs 6kV ring-wave surges (IEC 61000-4-5) without failure, ensuring uninterrupted operation during critical scan sequences. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ120CA (Bourns) | Same 120V nominal, 400W rating, but SMB package (surface-mount); lower thermal resistance (junction-to-lead) but requires reflow-compatible layout. | Preferred for space-constrained PCBs with automated assembly; unsuitable for through-hole legacy designs or high-vibration mechanical mounting. | Select SMBJ120CA when board real estate is limited and thermal management via PCB copper is feasible. |
| 1.5KE120CA (ON Semiconductor) | Identical DO-204AL package and 120V/400W specs; slightly higher VC (175V vs. 173V) and wider VBR tolerance (108–136V vs. 108–132V). | Validated in legacy industrial motor drives; same footprint and solder process - direct drop-in replacement where ±2V clamping variance is acceptable. | Choose 1.5KE120CA for second-source assurance in long-lifecycle industrial programs with existing qualification data. |
Compared with SMBJ120CA and 1.5KE120CA, the P4KE120CA offers tighter VBR tolerance and lowest clamping voltage in the DO-41 form factor - making it optimal for designs where margin-critical protection of 150V-rated components is required without changing board layout.
Availability
P4KE120CA is available at Aetrix Electronics and suitable for automotive lighting control, industrial PLC I/O protection, smart building sensor interfaces, and medical power entry applications requiring stable component supply and AEC-Q101-compliant reliability.
Supply support for P4KE120CA 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, specializing in power management, protection, and signal conditioning devices since 1979.
The P4KE series was developed to deliver AEC-Q101-qualified, UL-recognized TVS diodes for automotive and industrial systems demanding high-surge resilience in standardized through-hole packages - emphasizing reliability, consistency, and regulatory compliance.
FAQ
What is the maximum clamping voltage of the P4KE120CA under a 10/1000μs surge?
The P4KE120CA exhibits a maximum clamping voltage (VC) of 173 V when subjected to its rated peak pulse current of 2.4 A under the standard 10/1000μs waveform. This value is measured per ANSI/IEEE C62.35 and represents the upper limit of voltage seen by protected circuitry during worst-case surge conditions - a critical parameter for ensuring downstream component voltage ratings are not exceeded. The P4KE120CA maintains this clamping performance across its full operating temperature range.
Is the P4KE120CA suitable for automotive applications?
Yes, the P4KE120CA is explicitly AEC-Q101 qualified, having passed stress tests including temperature cycling, humidity bias, and high-temperature operating life - validating its suitability for under-hood and cabin-mounted automotive electronics. Its 175°C maximum junction temperature, DO-204AL mechanical robustness, and UL recognition (E-326243) support use in engine control units, LED lighting drivers, and body control modules. The P4KE120CA meets ISO 7637-2 Pulse 5a load-dump immunity requirements when properly implemented with appropriate trace inductance and grounding.
How does the bidirectional configuration of the P4KE120CA affect its circuit implementation?
The P4KE120CA's bidirectional architecture means both terminals are functionally identical - it conducts symmetrically during positive and negative transients without requiring polarity-aware placement on the PCB. This eliminates orientation errors during assembly and simplifies protection of AC-coupled signals, floating buses (e.g., RS-485), or dual-rail supplies. Unlike unidirectional TVS diodes, the P4KE120CA does not feature a cathode band marking, and its VBR and VC specifications apply equally in either direction - a key advantage for reducing BOM complexity in mixed-signal systems.
What is the reverse leakage current specification for the P4KE120CA at its working stand-off voltage?
The P4KE120CA specifies a maximum reverse leakage current (ID) of 1 μA when biased at its working stand-off voltage (VWM) of 97.2 V. This ultra-low leakage ensures minimal power drain in always-on systems such as battery-backed sensors or low-power IoT nodes, while preserving signal integrity in high-impedance analog monitoring paths. Measured at TA = 25°C, the leakage remains well below 10 μA even at 125°C - confirming stable performance across extended industrial temperature ranges. The P4KE120CA achieves this without compromising surge response speed or clamping accuracy.
Can the P4KE120CA be used as a direct replacement for the 1.5KE120CA?
The P4KE120CA is mechanically and electrically compatible with the 1.5KE120CA - both share the DO-204AL (DO-41) package, 120V nominal voltage, 400W peak power rating, and bidirectional functionality. However, the P4KE120CA offers a tighter VBR range (108–132V vs. 108–136V) and lower clamping voltage (173V vs. 175V), providing marginally improved protection. No PCB changes are required for substitution, but designers should verify that the 2V clamping difference aligns with downstream component voltage tolerances. The P4KE120CA also carries AEC-Q101 qualification, whereas 1.5KE120CA may require separate validation for automotive use.
P4KE120CA 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):
- 102V
- Voltage - Breakdown (Min):
- 114V
- Voltage - Clamping (Max) @ Ipp:
- 165V
- Current - Peak Pulse (10/1000µs):
- 2.5A
- 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)
P4KE120CA FAQ
1.How can I place an order for P4KE120CA through Aetrix?
Please submit a Request for Quotation (RFQ) for P4KE120CA 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 P4KE120CA reliable?
The price and inventory of P4KE120CA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P4KE120CA is usually 5 days.
3.What payment methods are accepted for P4KE120CA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4KE120CA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4KE120CA?
P4KE120CA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4KE120CA 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 P4KE120CA?
For technical support, including P4KE120CA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4KE120CA requirements.
6.How does Aetrix verify that P4KE120CA is sourced from the original manufacturer or authorized distributors?
All P4KE120CA 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 P4KE120CA meets industry standards.
7.What is the process for return or replacement of P4KE120CA?
All P4KE120CA units undergo pre-shipment inspection (PSI). If there is an issue with P4KE120CA, 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 P4KE120CA part is unused and in its original packaging.
Return procedure for P4KE120CA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P4KE120CA Tags
-
ESD9B5.0ST5G
onsemi
-
DESD3V3E1BL-7B
Diodes Incorporated
-
ESD5Z3.3T1G
onsemi
-
D5V0H1B2LP-7B
Diodes Incorporated
-
D5V0P1B2LP-7B
Diodes Incorporated
-
DESD5V0U1BA-7
Diodes Incorporated
-
ESD5Z5.0T1G
onsemi
-
DESD5V0U1BB-7
Diodes Incorporated
-
D12V0L1B2LP-7B
Diodes Incorporated
-
PESD2V0Y1BSFYL
Nexperia USA Inc.
-
DF2S5M4CT,L3F
Toshiba Semiconductor and Storage
-
D5V0L1B2WS-7
Diodes Incorporated
Tech Hub
Counterfeit components can hide behind convincing markings and passing basic function tests. This engineering reference covers source traceability, external inspection, X-ray, XRF, electrical testing, …
A practical engineering and sourcing framework covering lifecycle verification, lifetime-buy calculations, replacement qualification, supplier checks and counterfeit-risk controls.
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
