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Vishay General Semiconductor - Diodes Division P4KE6.8A-E3/54
- Part No.:
- P4KE6.8A-E3/54
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-204AL, DO-41, Axial
- Datasheet:
-
P4KE6.8A-E3/54.pdf
- Description:
- TVS DIODE 5.8VWM 10.5VC DO204AL
- Quantity:
- Payment:
- Shipping:
Inventory:2,157
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Product details
Overview
P4KE6.8A-E3/54 from Vishay General Semiconductor is a unidirectional Transient Voltage Suppressor (TVS) diode designed for primary-level overvoltage protection in DC power rails and signal lines. It features a 6.8 V breakdown voltage (VBR min 6.45 V, max 7.14 V), 5.8 V stand-off voltage (VWM), 10.5 V clamping voltage at 38.1 A peak pulse current, and 400 W peak pulse power rating with 10/1000 μs waveform - used to safeguard MOSFETs and ICs against inductive switching transients in automotive and industrial control modules.
For engineers reviewing the P4KE6.8A-E3/54 datasheet, P4KE6.8A-E3/54 pinout, P4KE6.8A-E3/54 application, or P4KE6.8A-E3/54 equivalent, key selection criteria include its DO-41 package compatibility, unidirectional polarity with cathode band marking, AEC-Q101 qualification (E3 suffix denotes RoHS-compliant commercial grade), and verified clamping performance under 10/1000 μs surge conditions per IEC 61000-4-5.
Technical Context
This device operates as a silicon avalanche diode optimized for fast transient suppression. Its glass-passivated junction enables low incremental surge resistance (typical <0.2 Ω), sub-nanosecond response time, and stable breakdown characteristics across -55 °C to +175 °C junction temperature range. The 10.5 V clamping voltage at 38.1 A ensures robust protection of 5 V logic interfaces without overstressing downstream components.
Rated for 400 W peak pulse power with 0.01 % duty cycle, it sustains repetitive surges when thermally managed via PCB copper pour or lead heatsinking. Its 1.5 W steady-state power dissipation and 66 °C/W junction-to-lead thermal resistance support reliable operation in compact layouts where ambient temperatures exceed 75 °C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 6.45 V / 7.14 V at 10 mA test current - defines precise avalanche initiation threshold for predictable clamping onset |
| VWM | 5.8 V - maximum continuous reverse operating voltage before leakage exceeds 1000 μA |
| VC @ IPPM | 10.5 V at 38.1 A - clamping voltage during 10/1000 μs surge, limiting protected circuit stress to safe margin below 12 V IC ratings |
| PPPM | 400 W - peak surge energy absorption capability compatible with IEC 61000-4-5 Level 3/4 surge testing |
| IFSM | 40 A - 8.3 ms half-sine forward surge rating, enabling use in DC power input stages with high inrush or fault currents |
| TJ max | +175 °C - extended junction temperature rating supports under-hood automotive and industrial environments |
| Package | DO-41 (DO-204AL) - industry-standard axial-leaded package with 0.205" body diameter, UL 94 V-0 molded epoxy, matte tin-plated leads |
Pinout & Package
DO-41 (DO-204AL) package: axial-leaded, cylindrical epoxy body with cathode band marking on one end. Leads are matte tin-plated, solderable per J-STD-002 and JESD 22-B102, rated for 275 °C dip soldering (10 s max). Body meets UL 94 V-0 flammability standard.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal | Connected to lower-potential side (e.g., GND or return path); conducts during positive transients when cathode is at higher potential |
| Cathode | Avalanche clamping terminal | Marked with color band; connected to protected line (e.g., 5 V rail); initiates avalanche breakdown when reverse voltage exceeds VBR |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Ensures stable, repeatable breakdown voltage with minimal parameter drift over lifetime and temperature |
| 400 W peak pulse power (10/1000 μs) | Provides certified surge immunity for automotive load-dump and ISO 7637-2 Pulse 5a/b compliance |
| AEC-Q101 qualified (E3 suffix) | Validated for automotive electronics per stress-test requirements including HTOL, TCT, and ESD HBM/MM |
| Low clamping ratio (VC/VBR ≈ 1.47) | Minimizes overvoltage overshoot during transient events, reducing risk of latch-up or gate oxide damage in MOSFETs |
| 1000 μA max reverse leakage @ VWM | Prevents excessive standby current in battery-powered systems while maintaining tight VWM margin |
Applications
| Automotive Power Input Protection | Industrial Sensor Signal Line Clamp |
|---|---|
Use Scenario: 12 V battery-fed ECUs exposed to load dump (ISO 7637-2 Pulse 5) and alternator ripple. IC Role / Device Role / Timing Role: Primary clamping element placed between power rail and ground, absorbing >95 % of surge energy before reaching downstream regulators. Use Value: Clamps to 10.5 V within nanoseconds, preventing overvoltage damage to 16 V-rated LDOs and microcontrollers. |
Use Scenario: Analog sensor outputs (e.g., pressure, temperature) routed through noisy factory floors with EMI and cable-induced transients. IC Role / Device Role / Timing Role: Low-capacitance TVS placed at connector entry point to shunt fast-rising ESD (IEC 61000-4-2) and inductive spikes. Use Value: Sub-1 nS response preserves signal integrity on 0–5 V ratiometric outputs without distorting measurement accuracy. |
| Consumer USB Port Surge Guard | Telecom DSL Line Transient Suppression |
Use Scenario: USB 2.0 VBUS line in set-top boxes and smart displays subjected to hot-plug surges and nearby lightning-induced coupling. IC Role / Device Role / Timing Role: Unidirectional clamp referenced to ground, sized to handle 400 W surges without thermal runaway. Use Value: Maintains 5.8 V stand-off to avoid interfering with USB enumeration while clamping to 10.5 V during 1 kV/500 A surges. |
Use Scenario: DSL line interface cards in central office equipment facing longitudinal surges up to 1 kV (ITU-T K.20/K.44). IC Role / Device Role / Timing Role: First-stage protector on tip/ring pair, coordinated with gas discharge tubes for multi-level defense. Use Value: 40 A IFSM rating supports coordination with upstream GDTs; DO-41 form factor enables automated placement on telecom PCBs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ6.8A | Surface-mount SMB package (vs. axial DO-41); same VBR (6.45–7.14 V), slightly higher VC (11.2 V @ 35.7 A), 600 W PPPM | Preferred for space-constrained PCBs; requires reflow profile validation; not drop-in compatible due to footprint change | Select SMBJ6.8A when board area is limited and SMT assembly is available; verify thermal relief pad design for 1.5 W dissipation. |
| 1N6267A | Legacy DO-41 TVS with identical VBR (6.45–7.14 V) but lower PPPM (300 W), higher VC (11.5 V @ 26.1 A), no AEC-Q101 qualification | Suitable for non-automotive consumer applications; lacks automotive reliability validation and tighter leakage spec | Choose 1N6267A only for cost-sensitive, non-automotive designs where 300 W surge rating suffices and AEC-Q101 is not required. |
Compared with SMBJ6.8A and 1N6267A, P4KE6.8A-E3/54 delivers AEC-Q101 qualification, lower clamping voltage (10.5 V), and guaranteed 400 W surge handling in a mature through-hole package - making it optimal for automotive and industrial applications requiring proven field reliability and manual repairability.
Availability
P4KE6.8A-E3/54 is available at Aetrix Electronics and suitable for automotive electronic control units, industrial sensor interfaces, and telecom line card protection requiring stable component supply and long-term lifecycle assurance.
Supply support for P4KE6.8A-E3/54 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 protection devices with emphasis on reliability, efficiency, and application-specific optimization.
The P4KE series belongs to Vishay's TRANSZORB® TVS family, engineered for robust transient suppression in harsh environments - targeting automotive, industrial, and telecom systems where failure modes must be mitigated without compromising signal fidelity or power integrity.
FAQ
What is the polarity configuration of P4KE6.8A-E3/54?
P4KE6.8A-E3/54 is a unidirectional TVS diode, meaning it conducts only in reverse bias during overvoltage events. The cathode is marked by a color band on the DO-41 body; the anode connects to ground or lower-potential reference. This configuration provides precise clamping on positive-going transients on DC lines, unlike bidirectional variants which suppress both polarities.
Does P4KE6.8A-E3/54 meet automotive qualification standards?
Yes, P4KE6.8A-E3/54 is AEC-Q101 qualified, as confirmed by Vishay documentation. The "E3" suffix indicates RoHS-compliant commercial-grade construction with JESD 201 Class 1A whisker resistance, and full qualification includes high-temperature operating life, temperature cycling, and ESD testing - making it suitable for under-hood and chassis-mounted automotive modules.
What is the maximum clamping voltage of P4KE6.8A-E3/54 under surge conditions?
The maximum clamping voltage of P4KE6.8A-E3/54 is 10.5 V, measured at 38.1 A peak pulse current using the standardized 10/1000 μs waveform. This value is guaranteed across the full operating temperature range and ensures protected circuits remain below critical overvoltage thresholds - for example, preserving margin for 12 V-rated ICs or 5 V logic families.
Can P4KE6.8A-E3/54 be used in bidirectional signal line protection?
No, P4KE6.8A-E3/54 is strictly unidirectional and unsuitable for bidirectional AC or differential signal lines. For such applications, Vishay offers bidirectional variants like P4KE6.8CA (with "CA" suffix), which provide symmetrical clamping in both directions. Using P4KE6.8A-E3/54 on bidirectional lines risks forward conduction and permanent damage during negative transients.
How does the DO-41 package of P4KE6.8A-E3/54 affect thermal performance?
The DO-41 package of P4KE6.8A-E3/54 has a typical junction-to-lead thermal resistance of 66 °C/W and junction-to-ambient resistance of 100 °C/W (with 10 mm lead length). Effective heat dissipation requires adequate PCB copper pour connected to both leads or external heatsinking; sustained 1.5 W power dissipation demands careful layout to maintain TJ ≤ 175 °C in ambient temperatures above 75 °C.
P4KE6.8A-E3/54 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:
- 1
- Bidirectional Channels:
- -
- 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:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 175°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- DO-204AL (DO-41)
P4KE6.8A-E3/54 FAQ
1.How can I place an order for P4KE6.8A-E3/54 through Aetrix?
Please submit a Request for Quotation (RFQ) for P4KE6.8A-E3/54 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 P4KE6.8A-E3/54 reliable?
The price and inventory of P4KE6.8A-E3/54 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P4KE6.8A-E3/54 is usually 5 days.
3.What payment methods are accepted for P4KE6.8A-E3/54?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4KE6.8A-E3/54 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4KE6.8A-E3/54?
P4KE6.8A-E3/54 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4KE6.8A-E3/54 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 P4KE6.8A-E3/54?
For technical support, including P4KE6.8A-E3/54 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4KE6.8A-E3/54 requirements.
6.How does Aetrix verify that P4KE6.8A-E3/54 is sourced from the original manufacturer or authorized distributors?
All P4KE6.8A-E3/54 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 P4KE6.8A-E3/54 meets industry standards.
7.What is the process for return or replacement of P4KE6.8A-E3/54?
All P4KE6.8A-E3/54 units undergo pre-shipment inspection (PSI). If there is an issue with P4KE6.8A-E3/54, 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 P4KE6.8A-E3/54 part is unused and in its original packaging.
Return procedure for P4KE6.8A-E3/54:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P4KE6.8A-E3/54 Tags
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