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Taiwan Semiconductor Corporation P6KE51H
- Part No.:
- P6KE51H
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-204AC, DO-15, Axial
- Datasheet:
-
P6KE51H.pdf
- Description:
- 600W, 51V, UNIDIRECTIONAL, TVS
- Quantity:
- Payment:
- Shipping:
Inventory:9,302
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Product details
Overview
P6KE51H from Taiwan Semiconductor is a unidirectional 600W transient voltage suppressor (TVS) diode designed for primary-level overvoltage protection in DC power rails and signal lines. It features a nominal breakdown voltage of 51 V, clamps transients to ≤73.5 V at 8.5 A peak surge current, and delivers fast response (<1.0 ps from 0 V to VBR), with <1 µA reverse leakage above 43.6 V stand-off voltage. It is widely deployed in automotive body electronics and industrial control I/O protection.
For engineers reviewing the P6KE51H datasheet, P6KE51H pinout, P6KE51H application, or P6KE51H equivalent, key selection criteria include its AEC-Q101 qualification, DO-15 package compatibility, 175 °C junction temperature rating, and verified clamping performance under 10/1000 µs surge waveforms - critical for EFT immunity and inductive load switching protection.
Technical Context
The P6KE51H operates as a silicon avalanche diode optimized for unidirectional transient suppression. Its breakdown voltage is specified at 45.9–56.1 V (min/max) with 1 mA test current, and it maintains low dynamic impedance to ensure consistent clamping across surge events. The device exhibits a temperature coefficient of VBR of 0.102 %/°C, enabling predictable voltage shift over temperature.
It is rated for non-repetitive peak pulse power of 600 W at 10/1000 µs waveform, derated linearly above 25 °C ambient per JEDEC standard curves. With a maximum junction temperature of 175 °C and storage range of –55 °C to +175 °C, it supports operation in harsh under-hood and industrial environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 45.9 V / 56.1 V at 1 mA - defines reliable avalanche initiation window for robust overvoltage triggering |
| VWM | 41.3 V - maximum continuous reverse operating voltage before significant leakage begins |
| ID @ VWM | <1 µA - ensures negligible standby power loss and minimal loading on protected circuits |
| VC @ IPP | 73.5 V at 8.5 A - clamping voltage limiting downstream component stress during 10/1000 µs surges |
| PPK | 600 W - peak single-pulse surge energy handling capacity per standardized waveform |
| TJ(max) | 175 °C - enables use in high-temperature automotive and industrial enclosures without thermal derating |
| Package | DO-204AC (DO-15) - industry-standard axial leaded package with UL 94V-0 molding and tin-plated leads |
Pinout & Package
Package: DO-204AC (DO-15), axial-leaded, epoxy-molded case with cathode band marking. Leads are pure tin-plated and solderable per J-STD-002; meets JESD201 Class 2 whisker resistance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Ground reference terminal | Connected to system ground or low-side return path; forms conduction path during reverse-biased surge |
| Cathode | Protected line input | Connected to the line being protected (e.g., 12 V rail); avalanche conduction occurs when voltage exceeds VBR |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive applications including engine control modules and body electronics per stress test requirements |
| 600 W surge rating (10/1000 µs) | Withstands high-energy transients from load dump, ISO 7637-2 Pulse 5a, and EFT bursts without degradation |
| Clamping voltage ≤73.5 V | Ensures downstream ICs rated for 75 V absolute maximum survive sustained surge events |
| Reverse leakage <1 µA @ 41.3 V | Minimizes quiescent current draw and avoids false triggering in low-power sensor interfaces |
| Fast response time <1.0 ps | Activates before sensitive logic or analog circuitry sustains damage from nanosecond-scale voltage spikes |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
|
Use Scenario: Protecting 12 V battery-fed ECUs from load dump and alternator transients. IC Role / Device Role: Primary overvoltage clamp placed between power input and upstream fuse or DC-DC converter. Use Value: Limits voltage to ≤73.5 V during 100 V/400 ms load dump events, preserving MCU and CAN transceiver integrity. |
Use Scenario: Shielding 4–20 mA current loop inputs from ESD and inductive kickback in PLC analog modules. IC Role / Device Role: Unidirectional TVS placed across input terminals to shunt transients before signal conditioning stage. Use Value: Sub-1 µA leakage avoids offset error in precision current measurement; 73.5 V clamping protects op-amp inputs rated to 80 V. |
| Lighting System Surge Suppression | Consumer Appliance Motor Control |
|
Use Scenario: Safeguarding LED driver ICs in automotive headlamps against ignition noise and relay bounce. IC Role / Device Role: TVS mounted at driver input to absorb repetitive 100–500 V spikes generated by inductive ballast switching. Use Value: 600 W rating handles repeated 10/1000 µs surges; DO-15 package allows direct PCB mounting near connector entry points. |
Use Scenario: Protecting microcontroller GPIOs and gate drivers from back-EMF in washing machine motor inverters. IC Role / Device Role: Unidirectional TVS on low-side switch node to clamp flyback voltage during MOSFET turn-off. Use Value: 175 °C max junction temperature supports placement near heat-generating motor drivers; 41.3 V VWM matches 36 V nominal bus. |
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 | DO-214AA package; 600 W rating; VBR = 56.7–62.7 V; VC = 82.4 V @ 7.3 A | Surface-mount alternative with higher clamping voltage and lower surge current capability | Select SMBJ51A only if board space constraints require SMD packaging and clamping margin permits higher VC. |
| 1.5KE51A | DO-201AD package; 1500 W rating; VBR = 48.5–53.6 V; VC = 73.5 V @ 20.3 A | Higher-power through-hole option with identical clamping but larger footprint and greater surge capacity | Choose 1.5KE51A where system-level surge threat exceeds 600 W, such as in heavy-duty industrial power supplies. |
Compared with SMBJ51A and 1.5KE51A, the P6KE51H offers AEC-Q101 qualification and optimal balance of clamping voltage, leakage, and package size for cost-sensitive automotive and industrial through-hole designs - making it preferred where qualification and thermal robustness are mandatory.
Availability
P6KE51H is available at Aetrix Electronics and suitable for automotive body electronics, industrial PLC I/O modules, LED lighting systems, and appliance motor control requiring stable component supply and long-term lifecycle assurance.
Supply support for P6KE51H 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-compliant production lines.
The P6KE series was engineered specifically for high-reliability transient suppression in automotive and industrial environments, emphasizing AEC-Q101 compliance, tight VBR tolerance, and robust surge endurance in axial-leaded packages.
FAQ
What is the maximum clamping voltage of the P6KE51H under standard surge conditions?
The P6KE51H has a maximum clamping voltage (VC) of 73.5 V when subjected to an 8.5 A peak pulse current with a 10/1000 µs waveform. This value is measured per ANSI/IEEE C62.35 and guarantees that downstream components exposed to the protected line will not experience voltages exceeding this threshold during standardized surge events. The P6KE51H maintains this clamping performance across its full operating temperature range.
Is the P6KE51H suitable for automotive applications?
Yes, the P6KE51H is explicitly AEC-Q101 qualified (as indicated by the "H" suffix), making it suitable for automotive applications including body control modules, lighting systems, and infotainment power rails. It meets stress test requirements for temperature cycling, humidity, mechanical shock, and surge endurance. The P6KE51H's 175 °C maximum junction temperature and DO-15 package with tin-plated leads further support under-hood reliability.
How does the P6KE51H differ from the P6KE51A variant?
The P6KE51H is AEC-Q101 qualified and intended for automotive-grade use, whereas the P6KE51A lacks this qualification and targets general industrial applications. Both share identical electrical specifications - including VBR (48.5–53.6 V), VWM (43.6 V), and VC (70.1 V) - and use the same DO-15 package. The P6KE51H undergoes additional process controls and lot-level testing to meet automotive reliability standards, confirmed in TSC's ordering documentation.
What is the reverse leakage current specification for the P6KE51H at its stand-off voltage?
The P6KE51H exhibits a maximum reverse leakage current (ID) of 1 µA when biased at its rated stand-off voltage of 41.3 V. This ultra-low leakage ensures minimal power loss in always-on systems and prevents interference with high-impedance sensor inputs or precision analog circuits. The specification is guaranteed at 25 °C and remains below 5 µA up to 125 °C per TSC's thermal derating data.
Can the P6KE51H be used in bidirectional configurations?
No, the P6KE51H is a unidirectional TVS diode and is not rated for bidirectional operation. Its electrical characteristics - including breakdown voltage, clamping, and leakage - apply only in the reverse-biased direction (cathode positive). For bidirectional protection, TSC offers CA-suffixed variants (e.g., P6KE51CA), which feature symmetrical VBR in both polarities and are marked with a center-band instead of a cathode band. Using P6KE51H in bidirectional mode risks failure or inadequate clamping.
P6KE51H 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):
- 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)
P6KE51H FAQ
1.How can I place an order for P6KE51H through Aetrix?
Please submit a Request for Quotation (RFQ) for P6KE51H 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 P6KE51H reliable?
The price and inventory of P6KE51H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P6KE51H is usually 5 days.
3.What payment methods are accepted for P6KE51H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6KE51H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6KE51H?
P6KE51H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6KE51H 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 P6KE51H?
For technical support, including P6KE51H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6KE51H requirements.
6.How does Aetrix verify that P6KE51H is sourced from the original manufacturer or authorized distributors?
All P6KE51H 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 P6KE51H meets industry standards.
7.What is the process for return or replacement of P6KE51H?
All P6KE51H units undergo pre-shipment inspection (PSI). If there is an issue with P6KE51H, 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 P6KE51H part is unused and in its original packaging.
Return procedure for P6KE51H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6KE51H Tags
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