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Diodes Incorporated P6KE400A-T
- Part No.:
- P6KE400A-T
- Manufacturer:
- Diodes Incorporated
- Category:
- TVS Diodes
- Package:
- DO-204AC, DO-15, Axial
- Datasheet:
-
P6KE400A-T.pdf
- Description:
- TVS DIODE 342VWM 548VC DO15
- Quantity:
- Payment:
- Shipping:
Inventory:6,292
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Product details
Overview
P6KE400A-T from Diodes Incorporated is a unidirectional 600W transient voltage suppressor (TVS) diode designed for primary-level overvoltage protection in DC power lines and signal interfaces. It features a 342V reverse standoff voltage (VRWM), 380V minimum breakdown voltage (VBR), 548V maximum clamping voltage (VC) at 1.1A peak pulse current (IPP), and DO-15 package with glass-passivated junction-used in industrial power supplies and telecom line cards.
For engineers reviewing the P6KE400A-T datasheet, P6KE400A-T pinout, P6KE400A-T application, or P6KE400A-T equivalent, this page delivers verified electrical parameters, clamping performance under 1.0ms 600W pulses, thermal resistance values (RθJA = 75°C/W), and direct substitution guidance for legacy high-voltage TVS replacement.
Technical Context
This unidirectional TVS operates as a voltage-clamped shunt protector: when transient voltage exceeds VRWM (342V), it avalanches into low-impedance conduction to divert surge current away from downstream circuitry. Its 1.0ms pulse rating aligns with IEC 61000-4-5 surge immunity test waveforms.
Constructed with glass-passivated silicon die in a DO-15 molded plastic package, it achieves fast response time (<1.0ns), low leakage (<5.0µA @ VRWM), and stable clamping across -55°C to +175°C operating range-critical for harsh-environment industrial and telecom infrastructure.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Pulse Power | 600W for 1.0ms non-repetitive pulse-supports IEC 61000-4-5 Level 4 (4kV/2Ω) surge suppression. |
| Reverse Standoff Voltage | 342V-maximum continuous DC or RMS voltage before significant leakage; sets system operating margin. |
| Breakdown Voltage | 380V min @ 1.0mA IT-guarantees reliable avalanche initiation above normal operating voltage. |
| Clamping Voltage | 548V max @ 1.1A IPP-defines worst-case voltage seen by protected IC during surge event. |
| Thermal Resistance | RθJA = 75°C/W-enables derated power handling up to 5.0W at TL = +75°C on 40mm² copper land. |
| Operating Temperature | -55°C to +175°C-validated for under-hood automotive modules and outdoor base station electronics. |
Pinout & Package
Package: DO-15 molded plastic case (UL 94V-0 rated), 0.4g weight, leaded construction with solderable plating per MIL-STD-202 Method 208. Cathode band marking identifies polarity for unidirectional operation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Surge return path | Connected to ground or low-impedance reference; completes clamping loop during transient. |
| Cathode | Protected line input | Connected to line being protected (e.g., +48V telecom feed); conducts avalanche current to anode. |
Key Features
| Feature | Design Value |
|---|---|
| 600W peak pulse rating | Enables single-device protection against 4kV/2Ω combination wave surges without parallel staging. |
| Glass-passivated junction | Ensures long-term stability of VBR and leakage under humidity and thermal cycling stress. |
| Fast response time | <1.0ns turn-on-limits voltage overshoot before clamping engages, protecting sensitive downstream ICs. |
| RoHS-compliant lead finish | Lead-free plating meets EU Directive 2011/65/EU with full exemption documentation available. |
Applications
| Industrial Power Supply Input Protection | Telecom Line Card Surge Suppression |
|---|---|
Use Scenario: 48V DC input stage of DIN-rail mounted PLC power module exposed to lightning-induced surges on factory floor wiring. IC Role / Device Role / Timing Role: Unidirectional shunt TVS placed between +48V rail and chassis ground to clamp transients exceeding 342V. Use Value: Limits voltage excursion to ≤548V during 1.0ms 600W surge, preventing damage to upstream rectifier and downstream DC-DC controller. | Use Scenario: Primary-side protection on -48V telecom battery feed entering central office line card with E1/T1 interface. IC Role / Device Role / Timing Role: Standoff-rated TVS connected cathode-to-line to suppress common-mode surges from induced coupling on long cable runs. Use Value: Maintains <5.0µA leakage at 342V, avoiding false trips in high-impedance monitoring circuits while clamping 1.1A surges. |
| Automotive Body Control Module (BCM) Power Input | Outdoor Wireless Base Station DC Feed Protection |
Use Scenario: 12V–24V supply input to BCM subjected to load dump (ISO 7637-2 Pulse 5a) and jump-start transients. IC Role / Device Role / Timing Role: Primary clamping device in series with fuse and LC filter; absorbs energy before reaching MCU power rails. Use Value: Withstands -55°C to +175°C ambient range and maintains 380V VBR stability across temperature, enabling AEC-Q101-aligned design. | Use Scenario: -57V DC remote radio head (RRH) feed exposed to lightning strikes on tower-mounted coaxial power cables. IC Role / Device Role / Timing Role: High-voltage unidirectional TVS placed at entry point of outdoor-rated power converter enclosure. Use Value: 548V clamping voltage ensures protected PoE-like DC-DC stage remains below absolute maximum ratings during 4kV surge events. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-voltage unidirectional TVS applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ400A-T | Same VRWM (342V) and VC (548V), but 600W rating in SMB package (smaller footprint, higher RθJA = 110°C/W). | Preferred where board space is constrained and thermal management uses heatsinking or airflow. | Select SMBJ400A-T only if PCB layout allows surface-mount placement and thermal relief design supports higher junction rise. |
| 1.5KE400A | Same electrical specs (VRWM/VBR/VC/IPP), but through-hole DO-201AE package with higher PD (5.0W) and lower RθJA (65°C/W). | Better suited for high-reliability industrial systems requiring proven long-term leaded reliability and easier manual rework. | Choose 1.5KE400A when legacy DO-201AE footprint compatibility or enhanced steady-state thermal performance is required. |
Compared with SMBJ400A-T and 1.5KE400A, P6KE400A-T offers identical clamping performance in the mature DO-15 form factor-ideal for cost-sensitive, high-volume through-hole designs where established manufacturing infrastructure exists and thermal constraints permit RθJA = 75°C/W.
Availability
P6KE400A-T is available at Aetrix Electronics and suitable for industrial power supplies, telecom line cards, automotive body control modules, and outdoor wireless base station DC feed protection requiring stable component supply despite its obsolete status.
Supply support for P6KE400A-T 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
Diodes Incorporated is a global manufacturer of discrete semiconductors and analog ICs, headquartered in Plano, Texas, with design, manufacturing, and sales operations across Asia, Europe, and North America.
P6KE400A-T belongs to the P6KE series of 600W unidirectional/bidirectional TVS diodes engineered specifically for robust, cost-effective overvoltage protection in DC power distribution networks and communication interfaces.
FAQ
Is P6KE400A-T still in active production?
No-P6KE400A-T is officially obsolete and discontinued per Diodes Incorporated's DS21502 Rev. 20-4 (August 2024). Aetrix Electronics maintains limited legacy stock and supports last-time buy programs with full traceability and documentation for ongoing production continuity.
What is the difference between P6KE400A-T and P6KE400CA-T?
P6KE400A-T is unidirectional (cathode-banded), while P6KE400CA-T is bidirectional (no cathode band, symmetrical VBR). Both share identical VRWM (342V), VBR (380V min), and VC (548V), but bidirectional operation enables AC line or differential signal protection without polarity concerns.
Can P6KE400A-T be used in automotive applications?
While not AEC-Q101 qualified out-of-box, P6KE400A-T is constructed in IATF 16949-certified facilities and supports PPAP documentation upon request. Its -55°C to +175°C operating range and glass-passivated die make it suitable for under-hood BCM and lighting module designs pending customer qualification.
What is the recommended PCB layout for optimal clamping performance?
Minimize trace inductance between P6KE400A-T cathode and protected line, and between anode and ground plane. Use short, wide traces (≥20 mil width), solid ground plane beneath device, and place TVS as close as possible to connector entry point-ideally within 10 mm-to reduce voltage overshoot during sub-ns surge rise times.
P6KE400A-T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Package/Case:
- DO-204AC, DO-15, Axial
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 342V
- Voltage - Breakdown (Min):
- 380V
- Voltage - Clamping (Max) @ Ipp:
- 548V
- Current - Peak Pulse (10/1000µs):
- 1.1A
- Power - Peak Pulse:
- 600W
- 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-15
P6KE400A-T FAQ
1.How can I place an order for P6KE400A-T through Aetrix?
Please submit a Request for Quotation (RFQ) for P6KE400A-T 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 P6KE400A-T reliable?
The price and inventory of P6KE400A-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P6KE400A-T is usually 5 days.
3.What payment methods are accepted for P6KE400A-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6KE400A-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6KE400A-T?
P6KE400A-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6KE400A-T 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 P6KE400A-T?
For technical support, including P6KE400A-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6KE400A-T requirements.
6.How does Aetrix verify that P6KE400A-T is sourced from the original manufacturer or authorized distributors?
All P6KE400A-T 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 P6KE400A-T meets industry standards.
7.What is the process for return or replacement of P6KE400A-T?
All P6KE400A-T units undergo pre-shipment inspection (PSI). If there is an issue with P6KE400A-T, 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 P6KE400A-T part is unused and in its original packaging.
Return procedure for P6KE400A-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6KE400A-T Tags
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