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Vishay General Semiconductor - Diodes Division P4KE6.8CAHE3/54
- Part No.:
- P4KE6.8CAHE3/54
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-204AL, DO-41, Axial
- Datasheet:
-
P4KE6.8CAHE3/54.pdf
- Description:
- TVS DIODE 5.8VWM 10.5VC DO204AL
- Quantity:
- Payment:
- Shipping:
Inventory:3,199
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Product details
Overview
P4KE6.8CAHE3/54 from Vishay General Semiconductor is a bidirectional Transient Voltage Suppressor (TVS) diode in DO-41 package, designed for clamping voltage transients up to 400 W (10/1000 μs waveform), with a breakdown voltage of 6.45–7.14 V at 10 mA and clamping voltage of 10.5 V at 38.1 A peak pulse current. It protects sensitive ICs and MOSFETs in automotive and industrial power rails.
For engineers reviewing the P4KE6.8CAHE3/54 datasheet, P4KE6.8CAHE3/54 pinout, P4KE6.8CAHE3/54 application, or P4KE6.8CAHE3/54 equivalent, key selection criteria include bidirectional clamping capability, AEC-Q101 qualification, DO-41 mechanical compatibility, 10.5 V clamping voltage at rated surge, and 175 °C maximum junction temperature for under-hood deployment.
Technical Context
This device operates as a voltage-clamped shunt protector: when reverse (or forward, in bidirectional mode) transient voltage exceeds its breakdown threshold (VBR = 6.45–7.14 V), it avalanches rapidly to limit voltage across protected circuitry. Its glass-passivated junction ensures stable leakage and low capacitance.
Rated for 400 W peak pulse power (10/1000 μs), it sustains repetitive surges at 0.01 % duty cycle and derates linearly above 25 °C ambient per Fig. 2. Thermal resistance is 66 °C/W junction-to-lead, enabling direct PCB trace heat sinking without external heatsink.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 6.45 V / 7.14 V at 10 mA - defines precise clamping onset window for overvoltage detection |
| VWM | 5.80 V - maximum continuous working voltage before leakage exceeds 1000 μA |
| VC @ IPPM | 10.5 V at 38.1 A - actual clamped voltage during 400 W transient, limiting stress on downstream ICs |
| PPPM | 400 W - peak surge energy absorption capacity using standard 10/1000 μs waveform |
| TJ max. | +175 °C - enables operation in high-temperature environments such as automotive engine compartments |
| AEC-Q101 qualified | Yes - validated for automotive-grade reliability including temperature cycling, HTRB, and ESD |
| Package | DO-41 (DO-204AL) - industry-standard axial leaded package with 25.4 mm minimum body length and 0.86 mm lead diameter |
Pinout & Package
DO-41 (DO-204AL) package: axial-leaded, molded epoxy body over passivated silicon chip; UL 94 V-0 rated; matte tin-plated leads compliant with J-STD-002 and JESD 22-B102; no polarity marking for bidirectional types.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (unmarked) | Bidirectional conduction path | Both terminals function identically - no cathode band; symmetric clamping in either direction |
| Lead 1 | Current entry/exit point | Direct connection to PCB trace; thermal path to copper pour for junction-to-board heat transfer |
| Lead 2 | Current entry/exit point | Second thermal and electrical interface; dual-leads enable symmetrical mounting and solder joint reliability |
Key Features
| Feature | Design Value |
|---|---|
| Glass passivated junction | Stable VBR tolerance (±5 %) and low leakage (<1000 μA at VWM) over lifetime and temperature |
| 400 W peak pulse rating (10/1000 μs) | Protects against ISO 7637-2 Pulse 1/2a/5a and IEC 61000-4-5 Level 4 surges without derating |
| AEC-Q101 qualification | Validated for automotive power supply lines including 12 V and 24 V battery systems |
| Low clamping ratio (VC/VBR ≈ 1.54) | Minimizes overvoltage margin required by protected ICs - e.g., supports 3.3 V or 5 V logic rail protection |
| DO-41 mechanical standardization | Drop-in replacement for legacy TVS diodes (e.g., 1.5KE6.8CA) with identical footprint and soldering profile |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting LIN bus transceivers and microcontroller I/O pins from load dump and alternator ripple in 12 V vehicle systems. IC Role / Device Role / Timing Role: Shunt clamping element placed between VCC and GND, responding within <1 ns to suppress transients exceeding 5.8 V. Use Value: Limits voltage to ≤10.5 V during 35 V/100 ms load dump events, preventing latch-up or gate oxide damage in connected MCUs. |
Use Scenario: Safeguarding analog front-end inputs of pressure/temperature sensors exposed to ESD and switching noise in factory automation PLCs. IC Role / Device Role / Timing Role: Bidirectional voltage clamp on differential signal lines (e.g., RS-485, CAN FD stubs), conducting surge current away from precision amplifiers. Use Value: Maintains signal integrity by clamping ±8 kV contact ESD (IEC 61000-4-2) to <12 V peak, preserving ADC reference stability. |
| Consumer Power Adapter Input Stage | Telecom DC Power Feed Protection |
Use Scenario: Secondary-side overvoltage suppression in AC/DC adapters for USB-C PD chargers subjected to lightning-induced surges on output cables. IC Role / Device Role / Timing Role: Fast-acting crowbar device across 5–20 V output rails, triggered by transient overshoot beyond VWM = 5.8 V. Use Value: Prevents damage to USB-PD controllers and GaN FETs by clamping 400 W surges to 10.5 V within nanoseconds, avoiding thermal runaway. |
Use Scenario: DC feed line protection in PoE-powered base stations where 48 V phantom power is susceptible to induced surges from nearby RF or lightning. IC Role / Device Role / Timing Role: Bidirectional TVS placed across +48 V and return, absorbing common-mode transients while maintaining steady-state bias. Use Value: Enables compliance with IEC 61000-4-5 (4 kV line-earth) without adding series impedance or affecting 48 V regulation accuracy. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ6.8CA | Surface-mount SMB package (3.5 × 3.5 mm), 600 W rating, lower VC = 11.2 V at 53.3 A | Requires PCB redesign for SMT placement; better suited for space-constrained telecom modules | Select when board real estate is limited and higher surge margin is needed; not drop-in compatible with DO-41 footprint |
| 1.5KE6.8CA | Same DO-41 package, but 1500 W rating, higher VC = 12.6 V at 118 A, larger body (4.5 mm Ø vs. 2.7 mm) | Higher power handling but less precise clamping; may overstress low-voltage ICs due to 2.1 V higher VC | Choose only if system-level surge requirements exceed 400 W; verify mechanical fit and thermal coupling on existing layout |
Compared with SMBJ6.8CA and 1.5KE6.8CA, the P4KE6.8CAHE3/54 offers optimal balance of AEC-Q101 qualification, tight 10.5 V clamping, and proven DO-41 reliability-making it preferred for cost-sensitive, high-volume automotive and industrial designs where footprint and qualification are non-negotiable.
Availability
P4KE6.8CAHE3/54 is available at Aetrix Electronics and suitable for automotive power rail protection, industrial sensor interface hardening, and consumer adapter overvoltage suppression requiring stable component supply across multi-year production cycles.
Supply support for P4KE6.8CAHE3/54 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
Vishay General Semiconductor is a global leader in discrete semiconductors, specializing in diodes, rectifiers, MOSFETs, and passive components with emphasis on reliability and automotive qualification.
The P4KE6.8CAHE3/54 belongs to the TRANSZORB® TVS family, engineered specifically for robust, standardized transient suppression in harsh environments-including under-hood automotive, factory floor, and outdoor telecom infrastructure.
FAQ
What does the 'CA' suffix indicate in P4KE6.8CAHE3/54?
The 'CA' suffix denotes a bidirectional configuration: the P4KE6.8CAHE3/54 conducts and clamps symmetrically in both polarities, unlike unidirectional variants (e.g., P4KE6.8A). This makes it ideal for AC-coupled or floating signal lines where polarity reversal is possible, such as in telecom DC feeds or differential sensor interfaces.
Is P4KE6.8CAHE3/54 suitable for protecting 3.3 V logic circuits?
No - the P4KE6.8CAHE3/54 has a stand-off voltage (VWM) of 5.8 V and clamps at 10.5 V, making it inappropriate for direct protection of 3.3 V rails. It is intended for 5 V or higher systems (e.g., 12 V automotive, 24 V industrial) where its 5.8 V VWM provides adequate margin above nominal supply.
How does the HE3 suffix differ from E3 in P4KE6.8CAHE3/54?
The HE3 suffix indicates AEC-Q101 qualification and JESD 201 Class 2 whisker resistance, whereas E3 denotes commercial-grade RoHS compliance only. For automotive applications requiring long-term reliability under thermal cycling and vibration, P4KE6.8CAHE3/54 is mandatory; P4KE6.8CA-E3/54 is restricted to non-automotive use.
What is the maximum allowable lead temperature during soldering for P4KE6.8CAHE3/54?
The P4KE6.8CAHE3/54 supports solder dip at 275 °C maximum for 10 seconds per JESD 22-B106. Reflow profiles must stay within JEDEC J-STD-020 limits for DO-41 packages - peak temperature ≤260 °C, time above 217 °C ≤60 s - to avoid epoxy cracking or junction degradation.
Does P4KE6.8CAHE3/54 require a heatsink for 400 W pulse handling?
No - the P4KE6.8CAHE3/54 relies on short-duration pulse operation (≤10 ms) and thermal mass of its leads and PCB traces. Its RθJL = 66 °C/W allows full 400 W dissipation without external heatsink, provided leads are soldered to ≥1 cm² copper area per lead for effective junction-to-board conduction.
P4KE6.8CAHE3/54 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-204AL, DO-41, Axial
- Series:
- TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 5.8V
- Voltage - Breakdown (Min):
- 6.45V
- Voltage - Clamping (Max) @ Ipp:
- 10.5V
- Current - Peak Pulse (10/1000µs):
- 38.1A
- Power - Peak Pulse:
- 400W
- 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-204AL (DO-41)
P4KE6.8CAHE3/54 FAQ
1.How can I place an order for P4KE6.8CAHE3/54 through Aetrix?
Please submit a Request for Quotation (RFQ) for P4KE6.8CAHE3/54 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 P4KE6.8CAHE3/54 reliable?
The price and inventory of P4KE6.8CAHE3/54 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P4KE6.8CAHE3/54 is usually 5 days.
3.What payment methods are accepted for P4KE6.8CAHE3/54?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4KE6.8CAHE3/54 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4KE6.8CAHE3/54?
P4KE6.8CAHE3/54 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4KE6.8CAHE3/54 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 P4KE6.8CAHE3/54?
For technical support, including P4KE6.8CAHE3/54 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4KE6.8CAHE3/54 requirements.
6.How does Aetrix verify that P4KE6.8CAHE3/54 is sourced from the original manufacturer or authorized distributors?
All P4KE6.8CAHE3/54 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 P4KE6.8CAHE3/54 meets industry standards.
7.What is the process for return or replacement of P4KE6.8CAHE3/54?
All P4KE6.8CAHE3/54 units undergo pre-shipment inspection (PSI). If there is an issue with P4KE6.8CAHE3/54, 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 P4KE6.8CAHE3/54 part is unused and in its original packaging.
Return procedure for P4KE6.8CAHE3/54:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P4KE6.8CAHE3/54 Tags
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