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Taiwan Semiconductor Corporation P6KE51AH
- Part No.:
- P6KE51AH
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-204AC, DO-15, Axial
- Datasheet:
-
P6KE51AH.pdf
- Description:
- TVS DIODE 43.6VWM 70.1VC DO204AC
- Quantity:
- Payment:
- Shipping:
Inventory:2,501
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Product details
Overview
P6KE51AH from Taiwan Semiconductor is a unidirectional 600W transient voltage suppressor (TVS) diode designed for primary-side overvoltage protection in automotive and industrial power rails. It features a 51V nominal breakdown voltage (VBR min/max = 48.5V/53.6V), 43.6V stand-off voltage (VWM), clamps to ≤70.1V at 8.9A peak surge current, and operates within -55°C to +175°C junction temperature range.
For engineers reviewing the P6KE51AH datasheet, P6KE51AH pinout, P6KE51AH application, or P6KE51AH equivalent, this AEC-Q101 qualified DO-15 TVS diode supports fast transient immunity design in 12V/24V automotive systems, DC power input stages, and I/O interface protection where low clamping voltage and sub-nanosecond response (<1.0ps) are critical.
Technical Context
The P6KE51AH employs a silicon avalanche structure optimized for unidirectional surge suppression with low dynamic impedance and high surge robustness. Its 10/1000μs waveform rating of 600W enables reliable handling of ISO 7637-2 pulse 1, 2a, and 5a transients in automotive ECUs and body control modules.
With a maximum reverse leakage of 1μA at 43.6V and temperature coefficient of VBR at 0.102%/°C, it maintains stable clamping performance across wide ambient conditions. The device is rated for 100A non-repetitive forward surge (IFSM) and meets UL 94V-0 flammability and JESD201 Class 2 whisker resistance requirements.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 48.5V / 53.6V - Ensures consistent avalanche initiation across production lots and temperature; defines minimum clamping threshold under surge |
| VWM | 43.6V - Maximum continuous DC or RMS operating voltage before significant leakage; sets safe margin below system rail (e.g., 48V nominal bus) |
| VC @ IPP | ≤70.1V @ 8.9A - Peak clamped voltage during 10/1000μs surge; determines protected circuit's maximum transient exposure level |
| PPK | 600W - Non-repetitive surge power handling per 10/1000μs waveform; qualifies for ISO 7637-2 and IEC 61000-4-5 Level 4 |
| TJ max | +175°C - Enables placement near hot components (e.g., power MOSFETs, inductors) without thermal derating concerns |
| Package | DO-204AC (DO-15) - Industry-standard axial leaded package with 0.400g mass; compatible with wave soldering and manual rework |
Pinout & Package
DO-204AC (DO-15) package with axial leads: Cathode indicated by band-marked end; anode is unmarked lead. Leads are pure tin plated, solderable per J-STD-002, and meet JESD201 Class 2 whisker resistance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (unmarked lead) | Current entry point during forward conduction | Connected to ground or low-impedance return path in unidirectional TVS configuration |
| Cathode (banded lead) | Avalanche clamping node | Connected to protected line (e.g., battery rail, signal input); conducts surge current to ground when V > VBR |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing per stress test plan |
| Clamping voltage ≤70.1V | Provides 25%+ margin below typical 90V automotive load dump limits, protecting downstream 75V-rated ICs |
| Response time <1.0ps | Ensures suppression initiates before nanosecond-scale EFT bursts propagate into sensitive analog or digital circuitry |
| UL Recognized #E-326243 | Confirms compliance with safety standards for end-equipment certification (e.g., ISO 16750-2, SAE J1113-11) |
| RoHS & halogen-free | Meets IEC 61249-2-21 and EU RoHS Directive 2011/65/EU for environmentally compliant manufacturing and recycling |
Applications
| Automotive Body Control Module (BCM) | Industrial 24V PLC Input Stage |
|---|---|
Use Scenario: Protects microcontroller GPIOs and CAN transceiver power pins from load dump and jump-start transients on 12V/24V vehicle battery lines. IC Role / Device Role: Unidirectional TVS placed between battery rail and local LDO input, shunting surges to chassis ground. Use Value: Clamps 12V system transients to ≤70.1V, preventing latch-up or gate oxide damage in 5V/3.3V logic ICs downstream of the LDO. |
Use Scenario: Shields programmable logic controller (PLC) digital input optocouplers from inductive kickback generated by solenoid valve switching. IC Role / Device Role: Primary surge clamp on 24V DC input terminal block, upstream of series resistor and opto-isolator. Use Value: Limits transient voltage to <70.1V, ensuring optocoupler CTR remains stable and input comparator thresholds are not violated during 100ms coil de-energization events. |
| LED Headlamp Driver Power Input | Telecom Remote Power Feeder |
Use Scenario: Safeguards buck controller ICs and gate drivers in automotive LED headlamps against ISO 7637-2 Pulse 5a (load dump) events up to 100V. IC Role / Device Role: First-line protection on 12V input rail, placed before bulk capacitor and controller IC. Use Value: Withstands 600W surge energy while maintaining clamping below 70.1V, enabling use of cost-effective 80V-rated MOSFETs and controllers. |
Use Scenario: Protects remote telecom equipment powered via 48V PoE-like feeders from lightning-induced surges entering through outdoor cabling. IC Role / Device Role: DC input TVS on power entry board, coordinated with upstream gas discharge tube (GDT) for staged protection. Use Value: Low dynamic impedance ensures rapid voltage clamping during fast-rising surges, reducing stress on downstream DC-DC converters rated for ≤60V input. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ51A | Surface-mount SMB package (vs. axial DO-15); same 51V VBR range but lower 600W rating applies to 10/1000μs with different thermal path | Requires PCB redesign for SMT assembly; better suited for space-constrained boards with automated placement | Select SMBJ51A when layout allows SMT and thermal management uses copper pour; P6KE51AH preferred for through-hole, high-reliability mechanical mounting |
| 1.5KE51A | Same DO-204AC package but higher 1500W peak power rating; larger junction area results in higher capacitance (~100pF vs. ~50pF for P6KE51AH) | Higher clamping voltage (73.5V) and slower response due to larger die; less suitable for high-speed signal lines | Choose 1.5KE51A only when surge energy exceeds 600W; P6KE51AH offers tighter clamping and lower capacitance for precision analog or fast digital interfaces |
Compared with SMBJ51A and 1.5KE51A, P6KE51AH delivers optimal balance of AEC-Q101 qualification, low clamping (≤70.1V), and DO-15 mechanical robustness-making it ideal for automotive and industrial through-hole designs requiring proven field reliability without SMT complexity or excessive surge margin.
Availability
P6KE51AH 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 P6KE51AH 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 capability.
The P6KE series was developed specifically for automotive and industrial transient suppression, emphasizing AEC-Q101 compliance, tight VBR tolerance, and robust 10/1000μs surge performance in standard DO-15 packaging.
FAQ
What is the maximum clamping voltage of the P6KE51AH under specified surge conditions?
The P6KE51AH has a maximum clamping voltage (VC) of 70.1V when subjected to its rated peak pulse current (IPP) of 8.9A using the 10/1000μs waveform. This value is measured at TA = 25°C and represents the upper limit of voltage seen by protected circuitry during a standardized surge event. Designers must ensure downstream components tolerate this clamped level with appropriate margin.
Is the P6KE51AH suitable for bidirectional transient protection?
No, the P6KE51AH is a unidirectional TVS diode, as indicated by its "H" suffix and absence of "CA" designation. It conducts only in reverse bias above VBR and blocks forward current beyond its 100A IFSM rating. For bidirectional protection, select a P6KE51A variant with "CA" suffix-or use back-to-back unidirectional devices-but P6KE51AH itself is strictly unidirectional.
Does the P6KE51AH meet automotive qualification standards?
Yes, the "H" suffix in P6KE51AH explicitly denotes AEC-Q101 qualification per Taiwan Semiconductor's ordering information. This includes stress testing for temperature cycling, high-temperature reverse bias (HTRB), and electrostatic discharge (ESD), making it suitable for automotive body electronics, infotainment power supplies, and ADAS sensor modules where component reliability is mission-critical.
What is the standoff voltage (VWM) rating for the P6KE51AH, and why does it matter?
The P6KE51AH has a maximum standoff voltage (VWM) of 43.6V, meaning it remains in high-impedance blocking state up to this DC or RMS voltage. This parameter ensures minimal leakage current (<1μA) during normal operation while providing sufficient margin below the 51V nominal breakdown-critical for avoiding false triggering on noisy 48V industrial rails or fluctuating automotive batteries.
How does the P6KE51AH's thermal performance compare to similar DO-15 TVS diodes?
The P6KE51AH supports a maximum junction temperature of +175°C and is rated for 5W steady-state power dissipation at TA = 75°C with 9.5mm lead lengths. Its thermal performance aligns with industry-standard DO-15 TVS devices, but its AEC-Q101 qualification confirms validated reliability under thermal cycling and high-TJ operation-exceeding generic DO-15 parts not tested to automotive stress profiles.
P6KE51AH 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:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 43.6V
- Voltage - Breakdown (Min):
- 48.5V
- Voltage - Clamping (Max) @ Ipp:
- 70.1V
- Current - Peak Pulse (10/1000µs):
- 8.9A
- 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)
P6KE51AH FAQ
1.How can I place an order for P6KE51AH through Aetrix?
Please submit a Request for Quotation (RFQ) for P6KE51AH 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 P6KE51AH reliable?
The price and inventory of P6KE51AH are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P6KE51AH is usually 5 days.
3.What payment methods are accepted for P6KE51AH?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6KE51AH transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6KE51AH?
P6KE51AH orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6KE51AH 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 P6KE51AH?
For technical support, including P6KE51AH datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6KE51AH requirements.
6.How does Aetrix verify that P6KE51AH is sourced from the original manufacturer or authorized distributors?
All P6KE51AH 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 P6KE51AH meets industry standards.
7.What is the process for return or replacement of P6KE51AH?
All P6KE51AH units undergo pre-shipment inspection (PSI). If there is an issue with P6KE51AH, 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 P6KE51AH part is unused and in its original packaging.
Return procedure for P6KE51AH:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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