My Inquiry
My Account
Diodes Incorporated P6KE350A-T
- Part No.:
- P6KE350A-T
- Manufacturer:
- Diodes Incorporated
- Category:
- TVS Diodes
- Package:
- DO-204AC, DO-15, Axial
- Datasheet:
-
P6KE350A-T.pdf
- Description:
- TVS DIODE 300VWM 482VC DO15
- Quantity:
- Payment:
- Shipping:
Inventory:9,877
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
P6KE350A-T from Diodes Incorporated is a unidirectional 600W transient voltage suppressor (TVS) diode designed for overvoltage protection in DC power lines and signal interfaces. It features a 300V reverse standoff voltage (VRWM), 332–368V breakdown range (VBR), 482V clamping voltage (VC) at 1.25A peak pulse current (IPP), and DO-15 package with glass-passivated die construction. Used in industrial power supplies to clamp lightning-induced surges on 277VAC-derived DC rails.
For engineers reviewing the P6KE350A-T datasheet, P6KE350A-T pinout, P6KE350A-T application, or P6KE350A-T equivalent, this page delivers verified electrical parameters, thermal derating behavior, clamping performance under 1.0ms 8/20μs transients, and direct substitution guidance against active alternatives - all grounded in Diodes' DS21502 Rev. 20-4 specification.
Technical Context
This TVS operates as a unidirectional avalanche diode, triggered when reverse voltage exceeds its specified VBR (332–368V). Its clamping action limits transient energy to ≤482V at IPP = 1.25A, protecting downstream MOSFETs or controllers during IEC 61000-4-5 surge events.
Thermal design relies on RθJA = 75°C/W and steady-state PD = 5.0W at TL = +75°C. Pulse power derating follows a defined curve: 100% at 25°C ambient, dropping to ~50% at 125°C, ensuring predictable surge handling across industrial temperature ranges.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Pulse Power | 600W for 1.0ms non-repetitive 10/1000μs waveform - defines maximum single-event surge energy absorption capability |
| Reverse Standoff Voltage | VRWM = 300V - maximum continuous DC or RMS voltage the device blocks without conduction |
| Breakdown Voltage | VBR = 332–368V @ IT = 1.0mA - precise avalanche initiation threshold for reliable triggering |
| Clamping Voltage | VC = 482V @ IPP = 1.25A - peak voltage seen by protected circuit during worst-case transient |
| Leakage Current | IR ≤ 5.0μA @ VR = 300V - ensures minimal standby power loss and signal integrity in high-impedance nodes |
| Package | DO-15 - industry-standard axial leaded package with 0.4g mass, UL 94V-0 molded plastic housing |
Pinout & Package
DO-15 package: axial-leaded, glass-passivated silicon junction, cathode indicated by band. Mounting requires ≥9.5mm lead length on 40mm² copper land for rated 5.0W steady-state dissipation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction path / low-impedance return during clamping | Connected to system ground or low-side reference; carries full IPP during transient |
| Cathode | Protected line connection / high-voltage input node | Connected to line under protection (e.g., +300V rail); voltage referenced to anode during clamping |
Key Features
| Feature | Design Value |
|---|---|
| 600W peak pulse rating | Enables robust protection against IEC 61000-4-5 Level 4 (4kV/2Ω) surges on 300V-class DC buses |
| Glass-passivated die construction | Ensures stable VBR and low leakage over 10+ years in humid or thermally cycled environments |
| Fast response time (<1.0ps) | Clamps transients before sensitive ICs experience overvoltage stress - critical for MOSFET gate protection |
| RoHS-compliant lead finish | Supports lead-free reflow assembly and meets EU Directive 2011/65/EU without exemptions |
Applications
| Industrial AC/DC Power Supplies | Telecom DC Distribution Panels |
|---|---|
Use Scenario: Protection of rectified 277VAC-derived 380VDC bus against lightning-induced surges in lighting control systems. IC Role / Device Role / Timing Role: Unidirectional TVS placed between DC+ and chassis ground to clamp positive transients only. Use Value: Limits voltage excursion to ≤482V, preventing damage to 600V-rated bulk capacitors and PFC controller ICs. | Use Scenario: Input-stage surge suppression on -48V telecom distribution boards exposed to induced surges from nearby power cables. IC Role / Device Role / Timing Role: Bidirectional protection not applicable; P6KE350A-T used in unidirectional configuration on positive-rail side of split-supply systems. Use Value: Maintains VRWM margin above nominal 300V operating point while delivering sub-500V clamping under 1.25A surge. |
| Renewable Energy Inverter DC Links | Railway Signaling Power Interfaces |
Use Scenario: DC link protection in solar string inverters where PV array open-circuit voltage reaches 350–400V under cold conditions. IC Role / Device Role / Timing Role: Primary overvoltage clamp on high-voltage DC bus upstream of IGBT gate drivers. Use Value: Withstands repetitive 600W pulses and provides predictable clamping at 332–368V VBR, aligning with system overvoltage trip thresholds. | Use Scenario: Protection of 220VDC signaling interfaces in railway trackside cabinets subject to traction return current coupling. IC Role / Device Role / Timing Role: Standoff-rated TVS on isolated 220V logic supply rail, referenced to functional ground. Use Value: Delivers 300V VRWM with 5μA leakage - preserves signal integrity while enabling fast (<1ns) response to EFT bursts. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ330A-T | Lower 600W rating but SMB package (surface-mount); VBR = 367–406V, VC = 484V @ 1.24A | Requires PCB real estate optimization; lacks axial leads for through-hole mounting in legacy power modules | Select when automated SMT assembly is required and thermal interface to heatsink is feasible |
| 1.5KE350A | Same DO-15 package and 300V VRWM, but higher 1500W rating; VBR = 332–368V, VC = 482V @ 3.1A | Higher IPP capability suits multi-pulse or longer-duration transients; larger junction capacitance may affect high-speed signals | Choose for enhanced surge margin in mission-critical infrastructure where 1500W rating justifies cost and size increase |
Compared with P6KE350A-T, SMBJ330A-T offers surface-mount compatibility at identical clamping performance but reduced mechanical ruggedness, while 1.5KE350A delivers triple the pulse power headroom in the same through-hole footprint - enabling design flexibility for varying surge severity requirements.
Availability
P6KE350A-T is available at Aetrix Electronics and suitable for industrial AC/DC power supplies, telecom DC distribution panels, and renewable energy inverter DC links requiring stable component supply despite its obsolete status - supported via legacy inventory and cross-qualified replacements.
Supply support for P6KE350A-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.
The P6KE series belongs to Diodes' transient voltage suppressor portfolio, engineered specifically for high-energy surge protection in industrial, automotive, and telecom power systems - emphasizing reliability under repeated 1.0ms transients and long-term stability in harsh environments.
FAQ
Is P6KE350A-T still in active production?
No - Diodes Incorporated has officially discontinued the P6KE350A-T, marking it as obsolete per DS21502 Rev. 20-4. Aetrix Electronics maintains limited legacy stock and supports transition to validated alternatives like SMBJ330A-T or 1.5KE350A with full parametric alignment and qualification documentation.
What is the maximum operating temperature for P6KE350A-T?
The P6KE350A-T is rated for operation from –55°C to +175°C junction temperature. Its thermal resistance values (RθJA = 75°C/W, RθJL = 15°C/W) allow sustained 5.0W dissipation at TL = +75°C when mounted on 40mm² copper, with pulse derating applied above ambient 25°C per Figure 4 in the datasheet.
Can P6KE350A-T be used in bidirectional configurations?
No - P6KE350A-T is unidirectional only, indicated by the "A" suffix. Bidirectional variants carry the "CA" suffix (e.g., P6KE350CA-T). Using the unidirectional part in reverse-biased AC applications risks catastrophic failure due to lack of symmetrical avalanche capability.
How does P6KE350A-T compare to P6KE300A-T in clamping performance?
P6KE350A-T clamps at 482V @ 1.25A, while P6KE300A-T clamps at 414V @ 1.45A. The higher VRWM of P6KE350A-T provides greater margin against normal operating voltage fluctuations on 300V-class rails, at the cost of slightly higher clamping voltage - making it preferable where system overvoltage tolerance exceeds 414V.
P6KE350A-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):
- 300V
- Voltage - Breakdown (Min):
- 332V
- Voltage - Clamping (Max) @ Ipp:
- 482V
- Current - Peak Pulse (10/1000µs):
- 1.25A
- 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
P6KE350A-T FAQ
1.How can I place an order for P6KE350A-T through Aetrix?
Please submit a Request for Quotation (RFQ) for P6KE350A-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 P6KE350A-T reliable?
The price and inventory of P6KE350A-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P6KE350A-T is usually 5 days.
3.What payment methods are accepted for P6KE350A-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6KE350A-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6KE350A-T?
P6KE350A-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6KE350A-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 P6KE350A-T?
For technical support, including P6KE350A-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6KE350A-T requirements.
6.How does Aetrix verify that P6KE350A-T is sourced from the original manufacturer or authorized distributors?
All P6KE350A-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 P6KE350A-T meets industry standards.
7.What is the process for return or replacement of P6KE350A-T?
All P6KE350A-T units undergo pre-shipment inspection (PSI). If there is an issue with P6KE350A-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 P6KE350A-T part is unused and in its original packaging.
Return procedure for P6KE350A-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6KE350A-T Tags
-
ESD9B5.0ST5G
onsemi
-
DESD3V3E1BL-7B
Diodes Incorporated
-
ESD5Z3.3T1G
onsemi
-
D5V0H1B2LP-7B
Diodes Incorporated
-
D5V0P1B2LP-7B
Diodes Incorporated
-
DESD5V0U1BA-7
Diodes Incorporated
-
ESD5Z5.0T1G
onsemi
-
DESD5V0U1BB-7
Diodes Incorporated
-
D12V0L1B2LP-7B
Diodes Incorporated
-
PESD2V0Y1BSFYL
Nexperia USA Inc.
-
DF2S5M4CT,L3F
Toshiba Semiconductor and Storage
-
D5V0L1B2WS-7
Diodes Incorporated
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
