My Inquiry
My Account
Taiwan Semiconductor Corporation P6KE51CH
- Part No.:
- P6KE51CH
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-204AC, DO-15, Axial
- Datasheet:
-
P6KE51CH.pdf
- Description:
- 600W, 51V, BIDIRECTIONAL, TVS
- Quantity:
- Payment:
- Shipping:
Inventory:6,315
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
P6KE51CH from Taiwan Semiconductor is a unidirectional 600W transient voltage suppressor (TVS) diode designed for primary-side overvoltage protection in power supply inputs, automotive ECUs, and industrial control interfaces. It features a 51V nominal breakdown voltage (VBR min 45.9V, max 56.1V), 41.3V stand-off voltage (VWM), 73.5V maximum clamping voltage at 8.5A peak surge current, and AEC-Q101 qualification for automotive-grade reliability.
For engineers reviewing the P6KE51CH datasheet, P6KE51CH pinout, P6KE51CH application, or P6KE51CH equivalent, this page delivers verified electrical parameters, DO-204AC package details, clamping performance under 10/1000μs transients, and validated alternatives for ESD and inductive switching protection in harsh environments.
Technical Context
The P6KE51CH operates as a unidirectional avalanche diode with fast response time (<1.0ps from 0V to VBR), low dynamic impedance, and junction temperature range of –55°C to +175°C. Its 600W non-repetitive peak pulse power rating is specified per 10/1000μs waveform per ANSI/IEEE C62.35.
It exhibits <1μA reverse leakage at 41.3V (VWM), 0.102%/°C temperature coefficient of VBR, and meets UL 94V-0 flammability and JESD201 Class 2 whisker resistance requirements. Polarity is marked by cathode band on DO-204AC package.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 41.3 V - Maximum continuous reverse operating voltage before clamping begins; defines safe DC/AC working margin. |
| VBR (min/max) | 45.9 V / 56.1 V - Breakdown voltage range at 1 mA test current; ensures predictable turn-on across production lot. |
| VC @ IPP | 73.5 V at 8.5 A - Clamping voltage during 10/1000μs surge; limits downstream IC stress to safe levels. |
| PPK | 600 W - Peak pulse power handling capability; supports high-energy lightning or EFT transients. |
| IR @ VWM | <1 μA - Reverse leakage at stand-off voltage; minimizes standby power loss in always-on circuits. |
| TJ max | +175 °C - Maximum junction temperature; enables operation in under-hood automotive or high-ambient industrial settings. |
| Package | DO-204AC (DO-15) - Industry-standard axial leaded package with tin-plated leads, RoHS and halogen-free compliant. |
Pinout & Package
DO-204AC (DO-15) package: axial-leaded, molded epoxy case with cathode band marking polarity. Leads are pure tin-plated, solderable per J-STD-002, and meet JESD201 Class 2 whisker resistance. Weight ≈ 0.400 g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Low-side reference terminal | Connected to circuit ground or low-voltage rail; forms return path during clamping. |
| Cathode | High-side surge input terminal | Connected to protected line (e.g., 48V bus, CAN-H); conducts avalanche current when V > VBR. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive applications including engine control, body electronics, and ADAS power rails. |
| 600W 10/1000μs surge rating | Withstands IEC 61000-4-5 Level 4 (4kV) surges without degradation when properly mounted. |
| <1.0ps response time | Clamps faster than most microcontroller I/O pins can be damaged, enabling effective system-level ESD immunity. |
| UL Recognized (E326243) | Meets safety standards for end-equipment certification in industrial and transportation equipment. |
| Halogen-free & RoHS | Complies with IEC 61249-2-21 and EU RoHS Directive 2011/65/EU for green manufacturing and disposal. |
Applications
| Automotive Power Input Protection | Industrial PLC Digital I/O Protection |
|---|---|
|
Use Scenario: 12V/24V battery-fed ECU power input exposed to load dump and jump-start transients. IC Role / Device Role / Timing Role: Primary overvoltage clamp placed upstream of DC-DC converter input. Use Value: Limits input voltage to ≤73.5V during 600W surges, preventing damage to buck controller and LDOs. |
Use Scenario: 24V digital input channel on programmable logic controller subject to inductive kickback from solenoid loads. IC Role / Device Role / Timing Role: Bidirectional suppression not applicable; P6KE51CH used unidirectionally with cathode to 24V rail. Use Value: Clamps reverse transients to safe levels while maintaining <1μA leakage during normal 24V operation. |
| LED Driver Surge Suppression | Telecom Line Interface Protection |
|
Use Scenario: Constant-current LED driver input in streetlight systems subjected to lightning-induced surges on AC mains. IC Role / Device Role / Timing Role: Front-end TVS on rectified DC bus prior to bulk capacitor and controller. Use Value: Absorbs 600W pulses without thermal runaway, preserving driver IC lifetime in outdoor deployments. |
Use Scenario: Low-voltage DC feed line (e.g., 48V PoE-derived) powering remote telecom node. IC Role / Device Role / Timing Role: Unidirectional clamp referenced to local ground, protecting PHY interface and PMIC. Use Value: Maintains 41.3V stand-off margin above 48V nominal while clamping 10/1000μs surges to 73.5V. |
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 SMAJ51A | Same DO-214AC (SMA) package, 51V VBR, 600W rating, but surface-mount; 73.5V VC identical. | Requires PCB re-layout for SMD vs. axial DO-15; better for automated assembly but lower creepage. | Select SMAJ51A for space-constrained, high-volume SMT designs where manual axial insertion is impractical. |
| ON Semiconductor 1.5KE51A | Same DO-204AC (DO-15) package, 51V VBR, 600W rating, but higher 76V VC and 1000W peak power derated to 600W at 10/1000μs. | Higher clamping voltage increases stress on downstream components; less suitable for tight-margin 5V/3.3V systems. | Select 1.5KE51A only if legacy design compatibility or dual-sourcing mandates identical footprint and lead form. |
Compared with P6KE51CH, SMAJ51A offers SMT efficiency at the cost of reduced creepage and manual assembly incompatibility, while 1.5KE51A retains axial form but sacrifices clamping precision-making P6KE51CH optimal for automotive and industrial designs demanding low VC and AEC-Q101 validation.
Availability
P6KE51CH is available at Aetrix Electronics and suitable for automotive power inputs, industrial PLC I/O modules, LED driver front-ends, and telecom DC feed lines requiring stable component supply with AEC-Q101 assurance and full traceability.
Supply support for P6KE51CH 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 P6KE series belongs to TSC's AEC-Q101-qualified TVS portfolio, engineered specifically for robust transient suppression in automotive power domains and harsh-environment industrial controls where reliability under thermal and surge stress is critical.
FAQ
What does the 'H' suffix in P6KE51CH signify?
The 'H' suffix in P6KE51CH indicates AEC-Q101 qualification, confirming that the device has passed stress tests for automotive-grade reliability-including temperature cycling, humidity bias HAST, and mechanical shock. This makes P6KE51CH suitable for under-hood and chassis-mounted applications where standard commercial TVS diodes would fail prematurely.
Is P6KE51CH unidirectional or bidirectional?
P6KE51CH is a unidirectional TVS diode, as confirmed by its cathode band marking, single-breakdown specification (VBR min/max only), and absence of bidirectional electrical data in its datasheet. It must be installed with cathode toward the protected line and anode to ground to function correctly-unlike CA-suffixed variants which are bidirectional.
What is the maximum clamping voltage of P6KE51CH and at what current is it measured?
The maximum clamping voltage of P6KE51CH is 73.5 V, measured at 8.5 A peak pulse current (IPP) under the standardized 10/1000 μs double-exponential surge waveform. This value is guaranteed across temperature and process variation, ensuring consistent overvoltage limiting in real-world surge events.
Can P6KE51CH replace P6KE51A in an existing design?
Yes, P6KE51CH can replace P6KE51A electrically and mechanically-both share identical DO-204AC packaging, 51V nominal voltage, and 600W rating-but P6KE51CH adds AEC-Q101 qualification and tighter VBR tolerance (45.9–56.1V vs. P6KE51A's 48.5–53.6V). No layout or schematic changes are needed, though automotive applications require the 'H' version for compliance.
What is the junction-to-ambient thermal resistance (RθJA) for P6KE51CH in DO-204AC package?
The datasheet does not specify RθJA for P6KE51CH in isolation; however, typical DO-204AC devices with 5×5 mm copper pads per lead achieve ~50°C/W. For thermal design, use the absolute maximum junction temperature (175°C) and steady-state power dissipation (5 W at TA = 75°C) to calculate allowable ambient rise-ensuring P6KE51CH remains within safe operating limits during repetitive surge events.
P6KE51CH Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Package/Case:
- DO-204AC, DO-15, Axial
- Series:
- P6KE
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 41.3V
- Voltage - Breakdown (Min):
- 45.9V
- Voltage - Clamping (Max) @ Ipp:
- 73.5V
- Current - Peak Pulse (10/1000µs):
- 8.5A
- Power - Peak Pulse:
- 600W
- Power Line Protection:
- No
- Applications:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 175°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Through Hole
- Supplier Device Package:
- DO-204AC (DO-15)
P6KE51CH FAQ
1.How can I place an order for P6KE51CH through Aetrix?
Please submit a Request for Quotation (RFQ) for P6KE51CH 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 P6KE51CH reliable?
The price and inventory of P6KE51CH are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P6KE51CH is usually 5 days.
3.What payment methods are accepted for P6KE51CH?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6KE51CH transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6KE51CH?
P6KE51CH orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6KE51CH 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 P6KE51CH?
For technical support, including P6KE51CH datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6KE51CH requirements.
6.How does Aetrix verify that P6KE51CH is sourced from the original manufacturer or authorized distributors?
All P6KE51CH 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 P6KE51CH meets industry standards.
7.What is the process for return or replacement of P6KE51CH?
All P6KE51CH units undergo pre-shipment inspection (PSI). If there is an issue with P6KE51CH, 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 P6KE51CH part is unused and in its original packaging.
Return procedure for P6KE51CH:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6KE51CH 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…
