Taiwan Semiconductor Corporation P4KE220A A0G
- Part No.:
- P4KE220A A0G
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-204AL, DO-41, Axial
- Datasheet:
-
P4KE220A A0G.pdf
- Description:
- TVS DIODE 185VWM 328VC DO204AL
- Quantity:
- Payment:

- Shipping:

Inventory:3,849
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
P4KE220A A0G from Taiwan Semiconductor is a unidirectional 400W transient voltage suppressor (TVS) diode designed for primary-side overvoltage protection in power supplies and industrial control inputs. It features a 220V nominal breakdown voltage (209–231 VBR @ 1 mA), 185 V working stand-off voltage (VWM), clamps to ≤328 V at 1.3 A peak pulse current, and uses DO-204AL (DO-41) axial package for PCB through-hole mounting in AC/DC front-end surge protection.
For engineers reviewing the P4KE220A A0G datasheet, P4KE220A A0G pinout, P4KE220A A0G application, or P4KE220A A0G equivalent, key selection criteria include clamping voltage margin vs. protected IC's absolute maximum rating, VWM derating for temperature drift, 10/1000 µs waveform compliance, and DO-41 mechanical fit in legacy power entry designs.
Technical Context
The P4KE220A A0G operates as a silicon avalanche diode with fast response (<1.0 ps from 0 V to VBR) and low dynamic impedance, enabling effective suppression of high-energy transients such as lightning-induced surges (IEC 61000-4-5) and inductive switching spikes. Its unidirectional polarity ensures DC-biased circuit compatibility without reverse conduction path concerns.
Rated for 400 W peak pulse power at 10/1000 µs, it delivers 1.3 A maximum peak pulse current (IPPM) while maintaining ≤328 V clamping voltage (VC). Junction temperature range spans −55 °C to +175 °C, supporting operation in high-ambient industrial environments without thermal derating below 25 °C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR @ IT | 209–231 V at 1 mA - defines precise avalanche initiation threshold for reliable overvoltage triggering |
| VWM | 185 V - maximum continuous reverse operating voltage before leakage exceeds 1 µA |
| VC @ IPPM | ≤328 V at 1.3 A - clamping voltage limiting stress on downstream components during surge events |
| PPK | 400 W - peak pulse power handling per 10/1000 µs waveform per ANSI/IEEE C62.35 |
| IPPM | 1.3 A - maximum non-repetitive surge current the device safely clamps without failure |
| TJMAX | +175 °C - enables use in high-temperature power supply enclosures and motor drive cabinets |
| Package | DO-204AL (DO-41) - industry-standard axial leaded package with 0.300 g mass and UL 94V-0 molding compound |
Pinout & Package
DO-204AL (DO-41) axial-leaded package with cathode band marking for unidirectional polarity. Leads are pure tin-plated, solderable per J-STD-002, and meet JESD 201 Class 2 whisker resistance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Low-side reference terminal | Connected to circuit ground or return path; establishes forward bias direction for clamping |
| Cathode | High-side surge input terminal | Connected to protected line (e.g., AC L/N or DC+); avalanche conduction occurs when voltage exceeds VBR |
Key Features
| Feature | Design Value |
|---|---|
| 400 W surge rating | Supports IEC 61000-4-5 Level 4 (4 kV/2 kA) surge immunity testing in AC mains interfaces |
| ≤328 V clamping voltage | Provides ≥22% margin below 400 V rated input stages of industrial SMPS controllers |
| 1 µA max. leakage @ VWM | Minimizes standby power loss in always-on monitoring circuits and battery-backed systems |
| −55 °C to +175 °C operation | Enables deployment in under-hood automotive ECUs and outdoor telecom power converters |
| UL Recognized #E-326243 | Validates safety compliance for end-equipment certification without additional component-level testing |
Applications
| Industrial AC Power Input Protection | DC Motor Drive Snubber |
|---|---|
|
Use Scenario: Protecting rectifier bridge and PFC controller ICs against lightning-induced surges on 230 VAC mains input. IC Role / Device Role / Timing Role: Primary-side TVS clamp placed across L-N or L/N-to-PE to divert >1 kA transients before reaching downstream semiconductors. Use Value: Limits voltage seen by 600 V-rated MOSFETs and gate drivers to ≤328 V, preventing avalanche breakdown and ensuring system-level IEC 61000-4-5 compliance. |
Use Scenario: Suppressing inductive kickback from 24–48 V DC brushed motors in factory automation actuators. IC Role / Device Role / Timing Role: Unidirectional TVS connected anode-to-ground, cathode-to-motor supply rail to clamp flyback spikes during PWM turn-off. Use Value: Absorbs 400 W energy pulses within <1.0 ps, reducing EMI noise coupling into position encoder signals and extending H-bridge lifetime. |
| Telecom Power Feeding Protection | Renewable Energy Inverter DC Link |
|
Use Scenario: Safeguarding PoE midspan injectors and remote radio unit power feeds against load dump and cable discharge events. IC Role / Device Role / Timing Role: Standoff-rated TVS placed at DC input stage to clamp transients up to ±100 V without false triggering during normal 57 V operation. Use Value: 185 V VWM ensures zero leakage interference with IEEE 802.3bt power negotiation, while 328 V clamping protects 300 V-rated DC-DC controllers. |
Use Scenario: Overvoltage protection on PV string combiner box outputs feeding central inverters in solar farms. IC Role / Device Role / Timing Role: High-voltage TVS mounted across positive/negative DC bus to absorb lightning-induced common-mode surges on long string runs. Use Value: 220 V nominal rating matches typical 1000 V DC system derating requirements, and DO-41 package allows direct integration into DIN-rail mount surge modules. |
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 P4KE220A | Identical electrical specs (209–231 VBR, 185 VWM, ≤328 VC), same DO-41 package, but RoHS-compliant only (not halogen-free) | No difference in surge clamping performance; lacks IEC 61249-2-21 halogen-free certification required for some EU industrial equipment | Select when halogen-free compliance is not mandated and Littelfuse supply chain preference applies |
| ON Semiconductor 1.5KE220A | Higher 1.5 kW peak power rating, larger DO-201AE package (5.2 mm body vs. DO-41's 2.7 mm), 20% higher clamping voltage (≤394 V) | Suitable for higher-energy surges but requires PCB layout change; clamping voltage exceeds safe margin for 400 V-rated components | Select only if system-level surge test levels exceed 400 W and board space allows larger footprint |
Compared with P4KE220A A0G, Littelfuse P4KE220A offers identical protection performance with different environmental compliance, while ON Semi 1.5KE220A trades compact DO-41 fit for higher power handling at the cost of increased clamping stress and board area.
Availability
P4KE220A A0G is available at Aetrix Electronics and suitable for industrial AC power input protection, DC motor drive snubbing, telecom power feeding, renewable energy inverter DC link protection, and lighting surge suppression requiring stable component supply across multi-year production cycles.
Supply support for P4KE220A A0G 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 industrial, automotive, and consumer markets since 1979.
The P4KE series was developed specifically for cost-sensitive, high-reliability transient suppression in legacy and new-design AC/DC power interfaces, emphasizing DO-41 compatibility, AEC-Q101 qualification options, and full regulatory alignment (UL, RoHS, halogen-free).
FAQ
What is the maximum clamping voltage of the P4KE220A A0G under standard 10/1000 µs surge conditions?
The P4KE220A A0G clamps to a maximum of 328 V when subjected to its rated 1.3 A peak pulse current (IPPM) under the 10/1000 µs waveform defined in ANSI/IEEE C62.35. This value is measured at TA = 25 °C and guarantees voltage limiting for downstream 400 V-rated components. The P4KE220A A0G datasheet specifies this as the worst-case VC parameter, confirmed across production lots.
Is the P4KE220A A0G suitable for bidirectional transient protection?
No, the P4KE220A A0G is a unidirectional TVS diode, indicated by the absence of "C" or "CA" suffix and presence of cathode band marking. It conducts only during positive transients on the cathode relative to anode. For bidirectional protection, select P4KE220CA A0G (if available) or a symmetric bipolar variant - the P4KE220A A0G must not be used in AC-coupled or floating signal lines without external polarity conditioning.
What does the "A0G" suffix indicate in P4KE220A A0G?
The "A0G" suffix in P4KE220A A0G denotes two attributes: "A" specifies tighter 5% tolerance on breakdown voltage (209–231 V vs. 198–242 V for non-A grade), and "0G" indicates green molding compound compliant with RoHS and halogen-free standards per IEC 61249-2-21. It is packaged in ammo box format (3,000 units), distinct from tape-and-reel variants.
How does the P4KE220A A0G perform at elevated ambient temperatures?
The P4KE220A A0G maintains full 400 W surge capability only at TA = 25 °C; its peak power rating derates linearly above this point per Figure 2 in the datasheet, reaching ~200 W at 100 °C. However, its VWM and VBR exhibit +0.108 %/°C temperature coefficient, meaning breakdown shifts upward by ~2.2 V from 25 °C to 125 °C - a critical consideration for margin analysis in high-temp enclosures.
Can the P4KE220A A0G replace older P4KE220 parts in existing designs?
Yes, the P4KE220A A0G is a direct form-fit-function replacement for legacy P4KE220 (non-A, non-G) versions in DO-41 sockets, offering improved 5% VBR tolerance and halogen-free construction. No PCB changes are needed, though designers should verify that the tighter VBR window (209–231 V vs. 198–242 V) does not reduce clamping margin in edge-case surge scenarios where older units may have triggered slightly earlier.
P4KE220A A0G Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Package/Case:
- DO-204AL, DO-41, Axial
- Series:
- P4KE
- Packaging:
- Tape & Box (TB)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 185V
- Voltage - Breakdown (Min):
- 209V
- Voltage - Clamping (Max) @ Ipp:
- 328V
- Current - Peak Pulse (10/1000µs):
- 1.3A
- 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)
P4KE220A A0G FAQ
1.How can I place an order for P4KE220A A0G through Aetrix?
Please submit a Request for Quotation (RFQ) for P4KE220A A0G 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 P4KE220A A0G reliable?
The price and inventory of P4KE220A A0G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P4KE220A A0G is usually 5 days.
3.What payment methods are accepted for P4KE220A A0G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4KE220A A0G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4KE220A A0G?
P4KE220A A0G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4KE220A A0G 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 P4KE220A A0G?
For technical support, including P4KE220A A0G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4KE220A A0G requirements.
6.How does Aetrix verify that P4KE220A A0G is sourced from the original manufacturer or authorized distributors?
All P4KE220A A0G 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 P4KE220A A0G meets industry standards.
7.What is the process for return or replacement of P4KE220A A0G?
All P4KE220A A0G units undergo pre-shipment inspection (PSI). If there is an issue with P4KE220A A0G, 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 P4KE220A A0G part is unused and in its original packaging.
Return procedure for P4KE220A A0G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P4KE220A A0G 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…

