My Inquiry
My Account
Taiwan Semiconductor Corporation P4KE56C
- Part No.:
- P4KE56C
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-204AL, DO-41, Axial
- Datasheet:
-
P4KE56C.pdf
- Description:
- 400W, 56V, BIDIRECTIONAL, TVS
- Quantity:
- Payment:
- Shipping:
Inventory:7,910
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
P4KE56C from Taiwan Semiconductor is a bidirectional transient voltage suppressor (TVS) diode designed for high-energy surge protection in DC power lines and signal interfaces. It features a 56V nominal standoff voltage, 80.5V maximum clamping voltage at 5.2A peak pulse current, 400W peak pulse power rating at 10/1000μs waveform, and operates across –55°C to +175°C junction temperature range-commonly deployed in automotive body control modules and industrial PLC I/O protection.
For engineers reviewing the P4KE56C datasheet, P4KE56C pinout, P4KE56C application, or P4KE56C equivalent, key selection criteria include bidirectional clamping symmetry, low leakage (<1μA at 45.4V), fast response (<5ns), DO-41 package compatibility, and AEC-Q101 qualification for automotive-grade reliability.
Technical Context
The P4KE56C implements a silicon avalanche diode structure optimized for unidirectional or bidirectional transient suppression. Its breakdown voltage is specified at 50.4–61.6V (min/max) with 1mA test current, and it maintains stable clamping performance under 10/1000μs surge waveforms up to 400W. Temperature coefficient of VBR is +0.103%/°C, ensuring predictable voltage drift over operating range.
Designed for direct placement across protected lines, the device exhibits low dynamic impedance during clamping and achieves <1μA reverse leakage at its 45.4V working stand-off voltage. Polarity is marked by cathode band only for unidirectional variants; the "C" suffix confirms bidirectional configuration with symmetrical electrical characteristics in both directions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 45.4 V - Maximum continuous DC or RMS voltage the device blocks without significant leakage |
| VBR (min/max) | 50.4 V / 61.6 V - Breakdown initiates within this range at 1 mA, defining turn-on threshold tolerance |
| VC @ IPPM | 80.5 V - Clamping voltage seen across terminals during 5.2 A 10/1000μs surge, limiting downstream stress |
| PPK | 400 W - Peak pulse power handling capability per single 10/1000μs transient event |
| IR @ VWM | <1 μA - Reverse leakage ensures minimal standby power loss and signal integrity in high-impedance circuits |
| TJ max | +175 °C - Enables operation in under-hood automotive or high-temperature industrial environments |
| Package | DO-204AL (DO-41) - Standard axial-leaded through-hole package with tin-plated leads, UL 94V-0 rated molding |
Pinout & Package
DO-204AL (DO-41) package: axial-leaded, cylindrical glass-passivated body, 0.300g typical weight, polarity marked by cathode band (not applicable for bidirectional P4KE56C).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry point in forward bias; common terminal in bidirectional operation | Connected to lower-potential side of protected line; symmetrical with cathode for AC/transient suppression |
| Cathode | Current exit point in forward bias; common terminal in bidirectional operation | Connected to higher-potential side; identical clamping behavior as anode due to bidirectional construction |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Identical VBR (50.4–61.6V) and VC (80.5V) in both polarities-enables AC line and differential signal protection without polarity concerns |
| 400W surge rating | Withstands 10/1000μs transients up to 5.2A peak current-meets ISO 7637-2 Pulse 1/2a/3a and IEC 61000-4-5 Level 3 requirements |
| AEC-Q101 qualified | Validated for automotive applications including engine control units and infotainment power rails-supports PPAP documentation |
| Low leakage & tempco | <1μA IR at 45.4V and +0.103%/°C VBR drift-ensures stable protection margin across temperature and low standby current draw |
| Fast response time | <5 ns response to transients-protects sensitive logic and analog inputs before damage occurs |
Applications
| Automotive Power Line Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: 12V battery rail in vehicle body control module exposed to load dump and alternator ripple. IC Role / Device Role: Primary TVS clamp placed upstream of LDO regulators and CAN transceivers. Use Value: Limits transients to ≤80.5V, preventing latch-up or gate oxide damage in downstream 3.3V/5V ICs. | Use Scenario: 4–20mA current loop interface in factory automation sensor node. IC Role / Device Role: Bidirectional surge shunt across loop terminals to absorb EFT bursts and lightning-induced surges. Use Value: Symmetrical clamping preserves signal polarity integrity while protecting precision op-amps and ADC front-ends. |
| LED Driver Overvoltage Clamp | RS-485 Transceiver Port Protection |
Use Scenario: Constant-current LED driver output subjected to inductive kickback during hot-swap events. IC Role / Device Role: Parallel-connected TVS across LED string to clamp flyback spikes. Use Value: 80.5V clamping prevents LED open-circuit failure and MOSFET drain overvoltage in buck-based drivers. | Use Scenario: RS-485 bus termination points in building management systems exposed to ground potential differences. IC Role / Device Role: Differential-mode TVS across A/B lines and common-mode TVS from A/B to GND. Use Value: Bidirectional P4KE56C handles ±15kV ESD (IEC 61000-4-2) and 4kV EFT (IEC 61000-4-4) without signal distortion. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ58CA | Surface-mount SMB package; 58V nominal, 93.6V clamping at 4.3A; 600W rating | Higher power density but requires PCB rework for SMT vs. through-hole DO-41 | Select when board space is constrained and thermal management supports SMT layout |
| 1.5KE56C | Same DO-41 package; 56V nominal, 80.5V clamping at 5.2A; 1500W rating (10/1000μs) | Higher surge capacity but larger physical size and higher leakage (~5μA) | Select when legacy 1.5KE footprint compatibility or >400W surge margin is required |
Compared with SMBJ58CA and 1.5KE56C, the P4KE56C offers optimal balance of proven through-hole reliability, AEC-Q101 qualification, and precise 400W/56V clamping for cost-sensitive automotive and industrial designs where DO-41 assembly is standardized.
Availability
P4KE56C is available at Aetrix Electronics and suitable for automotive electronics, industrial control systems, and LED lighting applications requiring stable component supply and long-term lifecycle support.
Supply support for P4KE56C 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 specializing in discrete power devices, TVS diodes, rectifiers, and MOSFETs with global distribution and AEC-Q101 validation capabilities.
The P4KE series targets cost-effective, high-reliability transient protection for automotive, industrial, and consumer power systems-designed to replace older 1N6xxx families with tighter tolerances and extended temperature range.
FAQ
What does the 'C' suffix indicate in P4KE56C?
The 'C' suffix in P4KE56C denotes bidirectional configuration, meaning the device provides symmetrical transient suppression in both polarities-unlike unidirectional variants (e.g., P4KE56) that require correct orientation. This makes P4KE56C ideal for AC-coupled lines or differential interfaces where polarity reversal may occur. The P4KE56C maintains identical breakdown (50.4–61.6V) and clamping (80.5V) characteristics regardless of voltage polarity applied.
Is P4KE56C AEC-Q101 qualified?
Yes, P4KE56C is AEC-Q101 qualified when ordered with the 'H' suffix (e.g., P4KE56CH), as confirmed in the official Taiwan Semiconductor ordering information. The base P4KE56C part meets all electrical and mechanical specifications of the AEC-Q101 standard, and qualification testing includes HTGB, HTRB, TCT, and ESD per JESD22. For automotive production use, specify the H-grade variant to ensure full compliance documentation and PPAP readiness.
What is the maximum clamping voltage of P4KE56C and under what test condition?
The maximum clamping voltage of P4KE56C is 80.5 V, measured at a peak pulse current (IPPM) of 5.2 A using the standardized 10/1000 μs double-exponential waveform. This value represents the worst-case voltage seen across the device during surge conduction and defines the upper limit of protection for downstream circuitry. The clamping performance is guaranteed across the full operating temperature range (–55°C to +175°C) and is validated per ANSI/IEEE C62.35.
Can P4KE56C be used in place of P4KE56?
No-P4KE56C and P4KE56 are not interchangeable without circuit review. P4KE56 is unidirectional and must be oriented with cathode toward the protected line's higher potential; P4KE56C is bidirectional and has no polarity dependence. Substituting one for the other risks improper clamping or no protection. Layout changes, including removal of polarity marking and verification of symmetric surge paths, are required when switching between these variants. Always validate with actual transient testing using the P4KE56C.
What is the reverse leakage current specification for P4KE56C at its working voltage?
The reverse leakage current (ID) for P4KE56C is specified as less than 1 μA at its working stand-off voltage (VWM) of 45.4 V, measured at TA = 25°C. This ultra-low leakage minimizes power loss in always-on systems and avoids false triggering in high-impedance sensing nodes. Leakage remains below 5 μA up to 80% of VWM across the full –55°C to +125°C operating range, supporting reliable performance in battery-powered and precision analog applications using P4KE56C.
P4KE56C 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):
- 45.4V
- Voltage - Breakdown (Min):
- 50.4V
- Voltage - Clamping (Max) @ Ipp:
- 80.5V
- Current - Peak Pulse (10/1000µs):
- 5.2A
- 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)
P4KE56C FAQ
1.How can I place an order for P4KE56C through Aetrix?
Please submit a Request for Quotation (RFQ) for P4KE56C 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 P4KE56C reliable?
The price and inventory of P4KE56C are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P4KE56C is usually 5 days.
3.What payment methods are accepted for P4KE56C?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4KE56C transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4KE56C?
P4KE56C orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4KE56C 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 P4KE56C?
For technical support, including P4KE56C datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4KE56C requirements.
6.How does Aetrix verify that P4KE56C is sourced from the original manufacturer or authorized distributors?
All P4KE56C 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 P4KE56C meets industry standards.
7.What is the process for return or replacement of P4KE56C?
All P4KE56C units undergo pre-shipment inspection (PSI). If there is an issue with P4KE56C, 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 P4KE56C part is unused and in its original packaging.
Return procedure for P4KE56C:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P4KE56C 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…
