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Vishay General Semiconductor - Diodes Division P4KE6.8CHE3/73
- Part No.:
- P4KE6.8CHE3/73
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-204AL, DO-41, Axial
- Datasheet:
-
P4KE6.8CHE3/73.pdf
- Description:
- TVS DIODE 5.5VWM 10.8VC DO204AL
- Quantity:
- Payment:
- Shipping:
Inventory:6,951
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Product details
Overview
P4KE6.8CHE3/73 from Vishay General Semiconductor is a unidirectional TransZORB® transient voltage suppressor (TVS) diode in DO-41 package, designed for primary overvoltage protection of sensitive electronics. It features a 6.45 V minimum breakdown voltage (VBR), 5.80 V maximum stand-off voltage (VWM), 10.5 V clamping voltage (VC) at 38.1 A peak pulse current, and 400 W peak pulse power rating with 10/1000 μs waveform - deployed on power rails and I/O lines of automotive ECUs and industrial sensor interfaces.
For engineers reviewing the P4KE6.8CHE3/73 datasheet, P4KE6.8CHE3/73 pinout, P4KE6.8CHE3/73 application, or P4KE6.8CHE3/73 equivalent, key selection criteria include its AEC-Q101 qualification, 175 °C max junction temperature, low 0.057 %/°C VBR temperature coefficient, and compatibility with high-reliability 12 V automotive supply protection where fast response (<1 ns) and low clamping ratio (VC/VWM ≈ 1.81) are critical.
Technical Context
This unidirectional TVS diode operates as a voltage-clamped shunt protector: when reverse voltage exceeds VWM (5.80 V), it transitions from high-impedance blocking to low-impedance conduction at VBR (6.45–7.14 V), limiting transients to ≤10.5 V. Its glass-passivated junction ensures stable leakage (<1000 μA at VWM) and robust surge handling under repetitive 0.01 % duty cycle conditions.
The device leverages DO-41's axial-leaded thermal path (RθJL = 66 °C/W) to sustain 400 W pulses without thermal runaway, while its 1.5 W steady-state power dissipation and 40 A 8.3 ms forward surge rating support integration into non-heatsinked PCB layouts. Polarity is marked by cathode band; no marking indicates bidirectional variants - not applicable to P4KE6.8CHE3/73.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off) | 5.80 V - Maximum continuous reverse voltage before significant leakage; sets operating margin below 6.8 V nominal system rail. |
| VBR (Breakdown) | 6.45–7.14 V at 10 mA - Tight tolerance ensures predictable turn-on across temperature; enables precise overvoltage thresholding. |
| VC (Clamping) | 10.5 V at 38.1 A - Limits transient overshoot to safe levels for downstream 12 V logic and analog ICs. |
| PPPM | 400 W (10/1000 μs) - Sustains high-energy ESD and load-dump surges common in automotive 12 V systems. |
| IPPM | 38.1 A - Peak current capacity directly determines survivability against ISO 7637-2 Pulse 1/2a/5a waveforms. |
| TJ max | 175 °C - Enables operation in under-hood environments without derating in most mounting configurations. |
| Temp. Coeff. | 0.057 %/°C - Low drift maintains consistent clamping performance across -55 °C to +175 °C range. |
Pinout & Package
DO-41 (DO-204AL) molded epoxy package with matte tin-plated axial leads; cathode indicated by color band. Body dimensions: 25.4 mm length min., 5.2 mm diameter max.; lead diameter 0.86 mm.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (unmarked end) | Current entry during forward conduction | Connects to lower-potential side (e.g., ground or return path) in unidirectional clamp configuration. |
| Cathode (banded end) | Current exit during reverse avalanche | Connects to protected line (e.g., 12 V rail); clamps transients to anode reference when voltage exceeds VWM. |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Ensures stable leakage current (<1000 μA at VWM) and long-term reliability under humidity and thermal cycling. |
| AEC-Q101 qualification | Validates suitability for automotive applications including engine control, body electronics, and ADAS sensor interfaces. |
| 400 W peak pulse power (10/1000 μs) | Meets ISO 7637-2 Pulse 5a (load dump) requirements for 12 V systems without external heat sinking. |
| Low incremental surge resistance | Minimizes VC overshoot during fast-rising transients (e.g., ESD >15 kV), improving protection margin for CMOS inputs. |
| UL 94 V-0 molding compound | Prevents flame propagation in enclosed enclosures, satisfying safety standards for industrial and automotive housings. |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
|
Use Scenario: Protecting 12 V supply inputs of engine control units (ECUs) against load-dump transients up to 60 V. IC Role / Device Role / Timing Role: Unidirectional shunt TVS placed between battery rail and local regulator input. Use Value: Clamps 60 V/100 ms load dump to ≤10.5 V, preventing damage to downstream LDOs and microcontrollers rated for 16 V absolute max. |
Use Scenario: Safeguarding analog output lines (e.g., 4–20 mA current loop) of pressure sensors in factory automation. IC Role / Device Role / Timing Role: Reverse-biased TVS connected across signal and ground to absorb inductive kickback from solenoid drivers. Use Value: Limits induced spikes to <11 V, preserving ADC input integrity and avoiding latch-up in signal conditioning op-amps. |
| Consumer Power Adapter Input | Telecom Line Card Surge Protection |
|
Use Scenario: Secondary-side DC output protection in wall adapters supplying USB-C PD controllers. IC Role / Device Role / Timing Role: Standoff-rated TVS on 5–20 V output rail to suppress coupling from primary-side MOSFET switching noise. Use Value: Maintains VWM = 5.80 V margin below 6 V nominal, ensuring zero leakage during normal operation while clamping EFT bursts to 10.5 V. |
Use Scenario: Front-end protection of Ethernet PHY power pins in enterprise switches exposed to lightning-induced surges. IC Role / Device Role / Timing Role: Unidirectional TVS on 3.3 V auxiliary supply rail, referenced to chassis ground. Use Value: Withstands 400 W surges per IEC 61000-4-5 Combination Wave (1.2/50 μs + 8/20 μs), enabling compliance with EN 61000-4-5 Level 3. |
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 range but higher VC (11.2 V), lower IPPM (33.5 A). | Preferred for space-constrained PCBs; requires reflow soldering instead of through-hole assembly. | Select SMBJ6.8A when board real estate is limited and automated SMT placement is available. |
| 1.5KE6.8A | Higher peak power (1500 W), larger DO-201 package; identical VBR/VC specs but 115 A IPPM and 2.5 W PD. | Used in heavy-duty industrial motor drives where multi-kW surge immunity is required. | Choose 1.5KE6.8A only if system-level testing confirms need for >400 W pulse handling beyond automotive/industrial norms. |
Compared with SMBJ6.8A and 1.5KE6.8A, P4KE6.8CHE3/73 delivers optimal balance of AEC-Q101 qualification, proven DO-41 mechanical robustness, and cost-effective 400 W protection - making it the preferred choice for volume automotive and industrial through-hole designs where thermal and reliability validation is complete.
Availability
P4KE6.8CHE3/73 is available at Aetrix Electronics and suitable for automotive ECU power protection, industrial sensor interface hardening, and telecom line card surge suppression requiring stable component supply and full traceability.
Supply support for P4KE6.8CHE3/73 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 P4KE6.8CHE3/73 belongs to Vishay's TransZORB® TVS family, engineered specifically for robust, standardized transient suppression in automotive, industrial, and consumer power systems where AEC-Q101 compliance and repeatable clamping performance are mandatory.
FAQ
What is the polarity configuration of P4KE6.8CHE3/73?
P4KE6.8CHE3/73 is a unidirectional transient voltage suppressor diode. Its cathode is marked by a visible color band on the DO-41 package body; the unmarked end is the anode. This configuration allows it to conduct only during reverse-voltage transients above VWM, making it suitable for DC rail protection where forward conduction must be blocked.
Does P4KE6.8CHE3/73 meet automotive qualification standards?
Yes, P4KE6.8CHE3/73 carries the HE3 suffix, indicating RoHS-compliance and full AEC-Q101 qualification. This certification covers stress tests including temperature cycling, humidity bias, high-temperature operating life, and ESD - validating its use in under-hood automotive modules such as body control units and lighting drivers.
What is the clamping voltage of P4KE6.8CHE3/73 at its rated peak pulse current?
The clamping voltage (VC) of P4KE6.8CHE3/73 is 10.5 V measured at 38.1 A peak pulse current (IPPM) using the standard 10/1000 μs waveform. This value defines the maximum voltage seen by downstream circuitry during a surge event and is critical for ensuring compatibility with 12 V system components rated for ≤16 V absolute maximum.
How does the temperature coefficient affect P4KE6.8CHE3/73 performance across operating range?
P4KE6.8CHE3/73 has a VBR temperature coefficient of +0.057 %/°C, meaning its breakdown voltage increases linearly with junction temperature. At 125 °C, VBR rises by ~5.7 % - from 6.45–7.14 V at 25 °C to approximately 6.82–7.55 V - maintaining safe margin above VWM while preserving clamping effectiveness in high-temperature environments.
Can P4KE6.8CHE3/73 be used in bidirectional protection circuits?
No, P4KE6.8CHE3/73 is strictly unidirectional. Bidirectional protection requires CA-suffixed variants like P4KE6.8CA. Using P4KE6.8CHE3/73 in AC or dual-polarity signal paths would result in forward conduction during negative half-cycles, causing failure. Always verify suffix: "A" = unidirectional, "CA" = bidirectional.
P4KE6.8CHE3/73 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-204AL, DO-41, Axial
- Series:
- TransZorb®
- Packaging:
- Tape & Box (TB)
- Product Status:
- Obsolete
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 5.5V
- Voltage - Breakdown (Min):
- 6.12V
- Voltage - Clamping (Max) @ Ipp:
- 10.8V
- Current - Peak Pulse (10/1000µs):
- 37A
- 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)
P4KE6.8CHE3/73 FAQ
1.How can I place an order for P4KE6.8CHE3/73 through Aetrix?
Please submit a Request for Quotation (RFQ) for P4KE6.8CHE3/73 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 P4KE6.8CHE3/73 reliable?
The price and inventory of P4KE6.8CHE3/73 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P4KE6.8CHE3/73 is usually 5 days.
3.What payment methods are accepted for P4KE6.8CHE3/73?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4KE6.8CHE3/73 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4KE6.8CHE3/73?
P4KE6.8CHE3/73 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4KE6.8CHE3/73 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 P4KE6.8CHE3/73?
For technical support, including P4KE6.8CHE3/73 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4KE6.8CHE3/73 requirements.
6.How does Aetrix verify that P4KE6.8CHE3/73 is sourced from the original manufacturer or authorized distributors?
All P4KE6.8CHE3/73 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 P4KE6.8CHE3/73 meets industry standards.
7.What is the process for return or replacement of P4KE6.8CHE3/73?
All P4KE6.8CHE3/73 units undergo pre-shipment inspection (PSI). If there is an issue with P4KE6.8CHE3/73, 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 P4KE6.8CHE3/73 part is unused and in its original packaging.
Return procedure for P4KE6.8CHE3/73:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P4KE6.8CHE3/73 Tags
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