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Taiwan Semiconductor Corporation P6KE43CH
- Part No.:
- P6KE43CH
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-204AC, DO-15, Axial
- Datasheet:
-
P6KE43CH.pdf
- Description:
- 600W, 43V, BIDIRECTIONAL, TVS
- Quantity:
- Payment:
- Shipping:
Inventory:5,572
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Product details
Overview
P6KE43CH from Taiwan Semiconductor is a unidirectional 600W transient voltage suppressor (TVS) diode designed for robust overvoltage protection in automotive and industrial power rails. It features a nominal breakdown voltage of 43 V, clamps transients to ≤61.9 V at 10 A peak surge current, and delivers <1 μA reverse leakage above 36.8 V standoff voltage - enabling reliable protection of 36–48 V systems such as automotive ECUs, DC-DC converter inputs, and CAN bus power supplies.
For engineers reviewing the P6KE43CH datasheet, P6KE43CH pinout, P6KE43CH application, or P6KE43CH equivalent, key selection criteria include its AEC-Q101 qualification, DO-204AC (DO-15) package compatibility with high-surge PCB layouts, 175°C junction rating for under-hood environments, and verified clamping performance under 10/1000 μs surge waveforms per IEC 61000-4-5.
Technical Context
The P6KE43CH operates as a silicon avalanche diode with unidirectional polarity, triggered when reverse voltage exceeds its 38.7–47.3 V breakdown range at 1 mA test current. Its low dynamic impedance ensures rapid voltage clamping during fast transients, with response time typically under 1.0 ps from 0 V to VBR.
It sustains non-repetitive 600 W peak pulse power at 10/1000 μs waveform, derates linearly above 25°C ambient, and maintains stable operation across –55°C to +175°C junction temperature range - making it suitable for harsh-environment automotive front-end protection where thermal cycling and EFT immunity are critical.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 38.7 V / 47.3 V at 1 mA - defines precise voltage threshold for avalanche conduction onset |
| VWM | 36.8 V - maximum continuous reverse working voltage before leakage exceeds 1 μA |
| VC @ IPP | 61.9 V at 10 A - clamped voltage during worst-case 10/1000 μs surge, limiting downstream stress |
| PPK | 600 W - peak pulse power handling capability per single 10/1000 μs transient event |
| IR @ VWM | <1 μA - ultra-low leakage preserves system standby current in battery-powered applications |
| TJ max | +175°C - enables placement near hot components (e.g., power MOSFETs, inductors) without derating |
| Package | DO-204AC (DO-15) - industry-standard axial leaded package with 0.400 g mass and UL 94V-0 molding |
Pinout & Package
DO-204AC (DO-15) axial-leaded package with cathode band marking. Leads are pure tin plated, solderable per J-STD-002, and meet JESD 201 Class 2 whisker resistance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current path / ground reference | Connected to system ground or low-side return; forms current loop during clamping |
| Cathode | Protected line input / high-side connection | Connected to protected rail (e.g., 48 V supply); blocks reverse current until VBR exceeded |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and mechanical shock per AEC standard |
| 600 W surge rating (10/1000 μs) | Withstands high-energy load dump and ISO 7637-2 Pulse 5a transients without degradation |
| Clamping voltage ≤61.9 V @ 10 A | Ensures protected ICs (e.g., SBCs, CAN transceivers) remain below absolute maximum ratings during surges |
| Reverse leakage <1 μA @ 36.8 V | Minimizes quiescent power loss in always-on vehicle modules (e.g., body control units) |
| UL Recognized #E-326243 | Confirms flammability compliance (UL 94V-0) and safety certification for end-equipment approvals |
Applications
| Automotive Power Rail Protection | Industrial DC-DC Input Stage |
|---|---|
|
Use Scenario: Protecting 42 V battery-fed engine control units against ISO 7637-2 load dump pulses up to 120 V. IC Role / Device Role: Primary overvoltage clamp placed between battery feed and DC-DC input filter capacitor. Use Value: Limits transient voltage to ≤61.9 V, preventing damage to downstream buck controller ICs rated for 65 V max input. |
Use Scenario: Safeguarding isolated 24 V → 5 V DC-DC converters in factory automation PLCs exposed to relay coil flyback. IC Role / Device Role: Unidirectional TVS shunting inductive kickback energy away from primary-side MOSFET gate driver. Use Value: Absorbs 600 W surge energy without latch-up, preserving converter uptime in high-noise manufacturing environments. |
| CAN Bus Power Line Protection | LED Driver Supply Protection |
|
Use Scenario: Securing 12 V CAN transceiver power pins against ESD and electrical fast transients in automotive infotainment head units. IC Role / Device Role: Secondary-level TVS on VCC rail upstream of CAN PHY, complementing primary front-end protection. Use Value: Sub-1 μA leakage avoids bias current errors in low-power CAN sleep modes while clamping EFT bursts to safe levels. |
Use Scenario: Shielding constant-current LED drivers in outdoor signage from lightning-induced surges on 36 V DC distribution lines. IC Role / Device Role: Front-end TVS on driver input, coordinated with MOV and fuse for staged overvoltage defense. Use Value: 175°C rating allows direct mounting on heatsink-integrated LED driver PCBs without thermal derating penalties. |
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 SMAJ43A | Same DO-214AC (SMA) package; 43 V nominal, 600 W rating; slightly higher VC = 69.4 V @ 8.6 A | Surface-mount layout; lower thermal mass than DO-15; less suited for high-temperature through-hole placements | Select when automated SMT assembly and space-constrained boards are prioritized over legacy through-hole compatibility |
| ON Semiconductor 1.5KE43A | Same DO-201AD (DO-27) package; 43 V nominal, 1500 W rating; VC = 64.5 V @ 23.3 A; larger footprint | Higher surge capacity but requires more board area; not AEC-Q101 qualified | Choose only for non-automotive applications needing >600 W margin, where qualification and compactness are secondary |
Compared with SMAJ43A and 1.5KE43A, the P6KE43CH uniquely combines AEC-Q101 qualification, DO-204AC axial package for high-reliability through-hole mounting, and optimized clamping at 10 A - making it the preferred choice for automotive power rail designs requiring certified ruggedness and thermal resilience.
Availability
P6KE43CH is available at Aetrix Electronics and suitable for automotive ECU protection, industrial DC-DC converter input stages, and LED driver supply circuits requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for P6KE43CH 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, specializing in high-reliability protection devices and power management components.
The P6KE series was developed specifically for automotive and industrial transient suppression, emphasizing AEC-Q101 compliance, high-temperature stability, and consistent clamping performance across wide operating conditions.
FAQ
What is the exact breakdown voltage range for P6KE43CH?
The P6KE43CH has a guaranteed breakdown voltage (VBR) range of 38.7 V to 47.3 V at 1 mA test current, measured per ANSI/IEEE C62.35. This range reflects manufacturing tolerance and ensures reliable triggering across production lots while maintaining design margin for 36–48 V system protection.
Is P6KE43CH unidirectional or bidirectional?
P6KE43CH is a unidirectional TVS diode, indicated by the "H" suffix denoting AEC-Q101 qualification and absence of "C" or "CA" designation. It conducts only in reverse bias above VBR, with cathode band marking identifying the protected line connection point.
Does P6KE43CH meet automotive qualification standards?
Yes, P6KE43CH is explicitly AEC-Q101 qualified per the manufacturer's ordering code definition (P6KExH), covering stress tests including high-temperature reverse bias, temperature cycling, and mechanical shock - confirming suitability for under-hood and chassis-mounted automotive applications.
What is the maximum clamping voltage of P6KE43CH under surge conditions?
The P6KE43CH clamps to a maximum of 61.9 V when subjected to a 10 A peak pulse current with 10/1000 μs waveform. This value is specified in the Electrical Specifications table and represents the upper limit of voltage seen by downstream circuitry during standardized surge events.
Can P6KE43CH be used in surface-mount designs?
No, P6KE43CH uses the DO-204AC (DO-15) axial-leaded package and is not compatible with surface-mount assembly. For SMT alternatives, consider SMAJ43A (DO-214AC) or SMCJ43A (DO-214AB), which offer similar voltage ratings but different package footprints and thermal profiles.
P6KE43CH 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):
- 34.8V
- Voltage - Breakdown (Min):
- 38.7V
- Voltage - Clamping (Max) @ Ipp:
- 61.9V
- Current - Peak Pulse (10/1000µs):
- 10A
- 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)
P6KE43CH FAQ
1.How can I place an order for P6KE43CH through Aetrix?
Please submit a Request for Quotation (RFQ) for P6KE43CH 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 P6KE43CH reliable?
The price and inventory of P6KE43CH are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P6KE43CH is usually 5 days.
3.What payment methods are accepted for P6KE43CH?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6KE43CH transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6KE43CH?
P6KE43CH orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6KE43CH 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 P6KE43CH?
For technical support, including P6KE43CH datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6KE43CH requirements.
6.How does Aetrix verify that P6KE43CH is sourced from the original manufacturer or authorized distributors?
All P6KE43CH 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 P6KE43CH meets industry standards.
7.What is the process for return or replacement of P6KE43CH?
All P6KE43CH units undergo pre-shipment inspection (PSI). If there is an issue with P6KE43CH, 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 P6KE43CH part is unused and in its original packaging.
Return procedure for P6KE43CH:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6KE43CH Tags
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