My Inquiry
My Account
Taiwan Semiconductor Corporation P4KE27A
- Part No.:
- P4KE27A
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-204AL, DO-41, Axial
- Datasheet:
-
P4KE27A.pdf
- Description:
- TVS DIODE 23.1VWM 37.5VC DO204AL
- Quantity:
- Payment:
- Shipping:
Inventory:5,810
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
P4KE27A from Taiwan Semiconductor is a unidirectional 400W transient voltage suppressor (TVS) diode designed for primary-level overvoltage protection in DC power rails and signal lines. It features a 27V nominal breakdown voltage (VBR = 25.7–28.4V @ 1mA), 23.1V working stand-off voltage (VWM), 37.5V maximum clamping voltage at 11.0A peak pulse current, and DO-204AL (DO-41) axial package - deployed in automotive body control modules to safeguard CAN transceivers against ISO 7637-2 load dump and EFT bursts.
For engineers reviewing the P4KE27A datasheet, P4KE27A pinout, P4KE27A application, or P4KE27A equivalent, key selection criteria include clamping performance under 10/1000μs surge, low leakage (<1μA @ 23.1V), AEC-Q101 qualification status, thermal derating above 25°C, and compatibility with manual or wave soldering per J-STD-002.
Technical Context
The P4KE27A operates as a silicon avalanche diode with fast response time (<1.0ps from 0V to VBR), enabling suppression of sub-nanosecond ESD events before sensitive downstream circuitry is stressed. Its unidirectional polarity and cathode-band marking define anode-to-cathode conduction path during reverse-biased overvoltage conditions.
Rated for 400W non-repetitive peak pulse power at TA = 25°C (derated linearly above 25°C per Fig.2), it sustains 175°C maximum junction temperature and exhibits 0.096%/°C VBR temperature coefficient - critical for stable clamping across automotive under-hood thermal profiles.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 23.1 V - Maximum continuous DC or RMS voltage the device blocks without significant leakage; defines safe operating margin below VBR. |
| VBR @ IT=1mA | 25.7–28.4 V - Measured breakdown voltage range at 1mA test current; ensures reliable turn-on during transients exceeding system rail. |
| VC @ IPPM=11.0A | 37.5 V - Clamped voltage at 10/1000μs waveform; limits stress on protected ICs to ≤37.5V during 400W surge event. |
| ID @ VWM | <1 μA - Reverse leakage at 23.1V; negligible power loss and no measurable impact on standby current in battery-powered systems. |
| PPK | 400 W - Peak pulse power rating per ANSI/IEEE C62.35; validates robustness against IEC 61000-4-5 Level 4 surges. |
| TJ max | 175 °C - Maximum junction temperature; supports operation in engine compartment environments with minimal heatsinking. |
| Package | DO-204AL (DO-41) - Axial-leaded, UL 94V-0 molded package with pure tin-plated leads; compatible with through-hole assembly and automated taping. |
Pinout & Package
DO-204AL (DO-41) axial package with cathode band marking indicating the cathode terminal. Leads are pure tin-plated and solderable per J-STD-002. Polarity is unidirectional: anode (unmarked end), cathode (banded end).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (unmarked lead) | Input/Line side connection | Connected to protected line (e.g., 24V supply rail); conducts forward during fault only if misapplied - not intended for forward conduction. |
| Cathode (banded lead) | Clamp reference / ground return | Connected to system ground or low-impedance return path; provides low-impedance shunt to divert surge current away from load. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified option available | Validated for automotive-grade reliability including temperature cycling, HTRB, and mechanical shock - required for BCM, lighting, and ADAS sensor interfaces. |
| 400W surge capability (10/1000μs) | Withstands repeated ISO 7637-2 Pulse 5a (load dump) events up to 400W without degradation when mounted per JEDEC standards. |
| Clamping voltage ≤37.5V at 11.0A | Ensures protected 24V systems (e.g., LIN/CAN transceivers) remain below absolute maximum ratings during worst-case surge. |
| Reverse leakage <1μA @ 23.1V | Eliminates measurable quiescent current penalty in always-on vehicle networks (e.g., door module sleep mode). |
| Fast response <1.0ps | Activates before ESD-induced latch-up or gate oxide rupture in CMOS ICs - critical for USB, sensor, and MCU I/O protection. |
Applications
| Automotive Body Control Module (BCM) | Industrial PLC Digital Input Protection |
|---|---|
Use Scenario: Protects 24V supply input of BCM microcontroller and CAN transceiver from load dump (ISO 7637-2 Pulse 5a) and jump-start transients. IC Role / Device Role / Timing Role: Primary clamping device placed directly at connector entry point; absorbs >95% of surge energy before reaching downstream regulators and communication ICs. Use Value: Limits clamped voltage to 37.5V, ensuring protected 24V-rated components operate within safe SOA and avoid destructive overvoltage failure. |
Use Scenario: Shields 24V digital input channels of programmable logic controllers from field-wiring induced surges (IEC 61000-4-5 Level 3). IC Role / Device Role / Timing Role: Front-end TVS on each optocoupler input stage; clamps transients before current-limiting resistor and LED anode. Use Value: Maintains <1μA leakage at 23.1V, preventing false triggering of high-impedance input circuits during normal operation. |
| LED Driver Power Supply Input | RS-485 Transceiver Bus Line Protection |
Use Scenario: Guards AC/DC or DC/DC converter input of outdoor LED streetlight drivers against lightning-induced surges on long feeder cables. IC Role / Device Role / Timing Role: First-stage overvoltage clamp on bulk capacitor input; coordinates with MOV and fuse for staged protection architecture. Use Value: 400W rating enables single-device handling of 10/1000μs surges up to 11A, reducing BOM count versus multi-stage solutions. |
Use Scenario: Installed on RS-485 bus lines (A/B) of building automation controllers to suppress EFT (IEC 61000-4-4) and ESD (IEC 61000-4-2) events. IC Role / Device Role / Timing Role: Unidirectional TVS on each differential line referenced to local ground; complements common-mode choke and receiver input ESD diodes. Use Value: 37.5V clamping prevents receiver input damage while preserving signal integrity - no added capacitance degrades 10 Mbps data rate. |
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 SMAJ24A | Same DO-214AC (SMA) package; 24V VWM, 38.9V VC @ 10.3A; 400W rating; RoHS/halogen-free. | Surface-mount alternative requiring PCB redesign; lower thermal resistance but no axial lead option for legacy through-hole designs. | Select when migrating to SMT or when higher board density is required; verify layout clearance for SMA footprint. |
| Vishay 1.5KE27A | Same DO-201AD (DO-27) axial package; identical 27V nominal, 23.1V VWM, 37.5V VC @ 11.0A; 1500W rating (higher surge headroom). | Physically larger package (5.6mm Ø vs. DO-41's 2.7mm Ø); requires revised mechanical cutout and lead spacing. | Choose for enhanced surge margin in harsh industrial environments where space permits; not drop-in due to dimensional mismatch. |
Compared with P4KE27A, SMAJ24A offers SMT compatibility but sacrifices axial mounting flexibility, while 1.5KE27A delivers higher surge capacity at the cost of larger footprint and incompatible lead geometry - neither is pin-compatible, and both require layout revision.
Availability
P4KE27A is available at Aetrix Electronics and suitable for automotive electronics, industrial PLCs, LED driver power supplies, and RS-485 communication systems requiring stable component supply with AEC-Q101 traceability and consistent DO-41 form factor.
Supply support for P4KE27A 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 semiconductor manufacturer headquartered in Hsinchu, Taiwan, specializing in discrete power devices, TVS diodes, rectifiers, and MOSFETs for automotive and industrial markets.
The P4KE series targets cost-sensitive, high-volume transient protection applications where reliability, standardized DO-41 packaging, and AEC-Q101 compliance are essential - particularly in automotive body electronics and industrial control hardware.
FAQ
What is the maximum clamping voltage of the P4KE27A under standard surge conditions?
The P4KE27A has a maximum clamping voltage (VC) of 37.5 V when subjected to a 10/1000μs surge waveform at its rated peak pulse current of 11.0 A. This value is measured per ANSI/IEEE C62.35 and guarantees that protected circuitry sees no more than 37.5 V during a 400W transient event - critical for safeguarding 24V-rated ICs such as CAN transceivers and microcontrollers in the P4KE27A application environment.
Is the P4KE27A suitable for automotive applications requiring AEC-Q101 qualification?
The P4KE27A itself is not inherently AEC-Q101 qualified; however, Taiwan Semiconductor offers AEC-Q101 qualified versions within the P4KE series denoted by an "H" suffix (e.g., P4KE27AH). The standard P4KE27A meets all electrical and mechanical specifications of the series but lacks the extended reliability testing required for automotive under-hood deployment. For AEC-Q101 compliance, specify P4KE27AH and confirm qualification status via Taiwan Semiconductor's official documentation.
How does the P4KE27A compare to bidirectional TVS diodes like P4KE27CA?
The P4KE27A is unidirectional and intended for DC line protection with defined polarity (cathode band), whereas P4KE27CA is bidirectional and symmetrical - suitable for AC lines or differential buses like RS-485 where voltage polarity reverses. The P4KE27A has lower leakage (<1 μA @ 23.1 V) and faster response (<1.0 ps) than its bidirectional counterpart, but cannot clamp negative-going transients on positive rails without additional circuitry. Selection depends strictly on signal polarity requirements in the P4KE27A design context.
What is the thermal derating behavior of the P4KE27A above 25°C ambient?
The P4KE27A's peak pulse power rating of 400 W is specified at TA = 25°C and must be linearly derated above that temperature per Taiwan Semiconductor's Fig.2. At 75°C ambient, its steady-state power dissipation is limited to 1 W with 9.5 mm lead length on 5×5 mm copper pads. For continuous operation, junction temperature must remain ≤175°C; designers must calculate thermal resistance and ensure adequate PCB copper area or airflow to maintain safe TJ in the P4KE27A application.
Can the P4KE27A be used in parallel to increase surge current handling?
No - the P4KE27A should not be paralleled for increased surge current capacity. Minor VBR tolerances (25.7–28.4 V) cause uneven current sharing, leading to thermal runaway in the lower-VBR unit. Taiwan Semiconductor explicitly advises against paralleling P4KE series devices. To handle higher surge currents, select a higher-power TVS (e.g., 1.5KE27A) or implement coordinated staged protection with upstream fusing and MOVs - not duplication of P4KE27A units.
P4KE27A 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):
- 23.1V
- Voltage - Breakdown (Min):
- 25.7V
- Voltage - Clamping (Max) @ Ipp:
- 37.5V
- Current - Peak Pulse (10/1000µs):
- 11A
- 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)
P4KE27A FAQ
1.How can I place an order for P4KE27A through Aetrix?
Please submit a Request for Quotation (RFQ) for P4KE27A 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 P4KE27A reliable?
The price and inventory of P4KE27A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P4KE27A is usually 5 days.
3.What payment methods are accepted for P4KE27A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4KE27A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4KE27A?
P4KE27A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4KE27A 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 P4KE27A?
For technical support, including P4KE27A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4KE27A requirements.
6.How does Aetrix verify that P4KE27A is sourced from the original manufacturer or authorized distributors?
All P4KE27A 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 P4KE27A meets industry standards.
7.What is the process for return or replacement of P4KE27A?
All P4KE27A units undergo pre-shipment inspection (PSI). If there is an issue with P4KE27A, 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 P4KE27A part is unused and in its original packaging.
Return procedure for P4KE27A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P4KE27A 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
Comparator circuit design covering voltage thresholds, input limits, open-collector outputs, LM393 wiring, op-amp differences, hysteresis, timing, window detection and practical fault diagnosis.
Schmitt triggers use separate rising and falling thresholds to stabilize slow or noisy signals. This guide covers hysteresis, 74HC14 and 74HCT14 selection, comparator calculations, RC oscillators and p…
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 …
