My Inquiry
My Account
STMicroelectronics P6KE400CARL
- Part No.:
- P6KE400CARL
- Manufacturer:
- STMicroelectronics
- Category:
- TVS Diodes
- Package:
- DO-204AC, DO-15, Axial
- Datasheet:
-
P6KE400CARL.pdf
- Description:
- TVS DIODE 342VWM 706VC DO15
- Quantity:
- Payment:
- Shipping:
Inventory:4,777
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
P6KE400CARL from STMicroelectronics is a bidirectional transient voltage suppression (TVS) diode in DO-15 package, designed for high-energy surge protection in DC power lines and signal interfaces. It features a 400 V standoff voltage (VRM), 548 V maximum clamping voltage at 1.1 A peak pulse current (10/1000 µs), 600 W peak pulse power rating, and operates up to 175 °C junction temperature - deployed in industrial power supplies and telecom line cards.
For engineers reviewing the P6KE400CARL datasheet, P6KE400CARL pinout, P6KE400CARL application, or P6KE400CARL equivalent, key selection criteria include clamping voltage under 1.1 A surge, bidirectional polarity, DO-15 mechanical compatibility, IEC 61000-4-2 ±30 kV ESD robustness, and thermal derating above 25 °C ambient.
Technical Context
This TVS diode uses planar junction technology to achieve low leakage (<0.5 µA at VRM), stable VBR (380–420 V at 1 mA), and predictable dynamic resistance (50.2 Ω at 8/20 µs). Its bidirectional structure enables symmetrical clamping for AC-coupled or floating bus protection without polarity constraints.
The device meets IEC 61000-4-4 level 4 (4 kV), exceeds IEC 61000-4-2 level 4 (±30 kV air/contact discharge), and supports sustained operation at Tj = 175 °C with 300 W pulse capability at max junction temperature - critical for high-reliability industrial and telecom surge suppression.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Standoff Voltage (VRM) | 400 V - maximum continuous reverse operating voltage before breakdown begins |
| Breakdown Voltage (VBR) | 380–420 V at 1 mA - defines precise conduction onset threshold for overvoltage triggering |
| Clamping Voltage (VCL) | 548 V at 1.1 A (10/1000 µs) - limits transient voltage seen by protected circuitry |
| Peak Pulse Power (PPP) | 600 W (10/1000 µs) - energy-handling capacity for standard lightning-surge waveforms |
| Junction Temperature Range | −55 to +175 °C - enables deployment in harsh environments including outdoor telecom cabinets |
| ESD Robustness | ±30 kV contact/air discharge (IEC 61000-4-2) - exceeds level 4 immunity requirements |
| Dynamic Resistance (RD) | 50.2 Ω at 8/20 µs - determines voltage rise per unit surge current during clamping |
Pinout & Package
DO-15 (JEDEC DO-204AC) axial-leaded package with cathode band marking; leads are matte tin-plated for solderability and RoHS compliance. Body length: 6.05–6.75 mm, lead diameter: 0.71–0.88 mm, overall length: 26–31 mm.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Reverse-biased terminal in unidirectional mode; one side of symmetrical junction in bidirectional mode | Connected to lower-potential node (e.g., GND or return path); forms half of bidirectional clamping path |
| Cathode | Marked end; reverse-biased terminal in unidirectional mode; other side of symmetrical junction | Connected to higher-potential node (e.g., VBUS or signal line); completes bidirectional surge path |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC lines or floating buses without polarity dependency |
| Low leakage current | <0.5 µA at 400 V VRM ensures minimal standby power loss in high-impedance circuits |
| High-temperature operation | Rated for full 600 W pulse handling up to 175 °C junction temperature |
| IEC 61000-4-2/4-4 compliance | Validated for ±30 kV ESD and 4 kV EFT - eliminates need for external test validation |
| Planar junction construction | Delivers consistent VBR tolerance and stable RD across temperature and lifetime |
Applications
| Industrial Power Supply Protection | Telecom Line Interface |
|---|---|
|
Use Scenario: DC input stage of DIN-rail mounted 24/48 V power supply exposed to load dump and inductive switching transients. IC Role / Device Role / Timing Role: Primary overvoltage clamp on main DC rail, triggered within nanoseconds of surge onset. Use Value: Limits transient voltage to ≤548 V, preventing damage to downstream DC-DC controllers and MOSFETs rated for 600 V max. |
Use Scenario: Protection of RS-485 transceiver inputs in outdoor base station backhaul links subject to lightning-induced surges. IC Role / Device Role / Timing Role: Bidirectional shunt element across differential pair, symmetrically clamping both polarities. Use Value: Maintains signal integrity by clamping <10 ns after surge arrival while surviving repeated 4 kV EFT events per IEC 61000-4-4. |
| Automotive Body Control Module | Smart Meter AC Mains Input |
|
Use Scenario: 12 V battery line protection in BCM modules where load dump pulses exceed 100 V. IC Role / Device Role / Timing Role: Standoff-rated TVS placed upstream of LDO regulators and microcontroller power rails. Use Value: Withstands 100 A non-repetitive surge (10 ms) and provides 400 V DC blocking while clamping to safe levels. |
Use Scenario: Surge suppression on 230 V AC input of smart electricity meters installed in distribution panels. IC Role / Device Role / Timing Role: Secondary protection stage after MOV, absorbing residual fast transients missed by bulk clamping. Use Value: Adds precision clamping with 548 V ceiling - prevents overvoltage stress on metering ICs and isolation barriers. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar TVS diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Littelfuse SMAJ400CA | Same DO-214AC package; 552 V VCL at 1.1 A (10/1000 µs); 5% higher RD (52.8 Ω) | Higher thermal resistance (RθJA ≈ 75 °C/W vs. ST's 65 °C/W) limits high-temp derating | Preferred when existing PCB layout uses SMA footprint and board space is constrained |
| Vishay 1.5KE400CA | Higher PPP (1500 W), larger DO-201AD package; 560 V VCL at 2.7 A (10/1000 µs) | Slower response due to higher junction capacitance (150 pF vs. 45 pF @ 1 MHz) affects high-speed signal lines | Chosen when system-level surge testing requires >1 kW pulse margin and size is secondary |
Compared with SMAJ400CA and 1.5KE400CA, P6KE400CARL delivers tighter VCL control, lower thermal resistance, and smaller DO-15 footprint - making it optimal for space-constrained industrial power rails where precision clamping and thermal reliability are prioritized over raw power rating.
Availability
P6KE400CARL is available at Aetrix Electronics and suitable for industrial power supplies, telecom line interfaces, automotive body control modules, and smart meter AC mains inputs requiring stable component supply and long-term lifecycle support.
Supply support for P6KE400CARL 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
STMicroelectronics is a global semiconductor leader headquartered in Geneva, Switzerland, delivering intelligent power, analog, MEMS, and microcontroller solutions across automotive, industrial, and consumer markets.
P6KE400CARL belongs to ST's P6KE series of planar TVS diodes - engineered specifically for high-reliability surge suppression in industrial and telecom infrastructure where low leakage, tight VBR tolerance, and high-temperature stability are mandatory.
FAQ
What is the maximum clamping voltage of P6KE400CARL under a 10/1000 µs surge?
The maximum clamping voltage is 548 V at 1.1 A peak pulse current for a 10/1000 µs waveform, measured at 25 °C ambient. This value increases linearly with junction temperature at a coefficient of 11 × 10⁻⁴/°C, reaching ~592 V at Tj = 125 °C.
Is P6KE400CARL suitable for protecting RS-485 differential pairs?
Yes - its bidirectional configuration, low 45 pF junction capacitance at 1 MHz, and sub-10 ns response time make it appropriate for RS-485 line protection. It must be placed directly across the A/B terminals with minimal trace length to preserve signal integrity up to 20 Mbps.
How does P6KE400CARL compare to unidirectional P6KE400A in terms of circuit implementation?
P6KE400CARL replaces two unidirectional devices in AC or floating applications. Unlike P6KE400A (cathode-marked, single-direction conduction), P6KE400CARL has no polarity marking and conducts equally in both directions - simplifying layout and eliminating orientation errors during assembly.
What reflow profile should be used for P6KE400CARL during PCB assembly?
ST recommends a peak reflow temperature of 240–245 °C for 2–3 seconds, with ramp-up rate ≤3 °C/s and cooling rate ≥2 °C/s. The device complies with J-STD-020 MSL level 1 and withstands 260 °C for 10 s at 5 mm from case - no pre-baking required.
P6KE400CARL Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Package/Case:
- DO-204AC, DO-15, Axial
- Series:
- P6KE, TRANSIL™
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 342V
- Voltage - Breakdown (Min):
- 380V
- Voltage - Clamping (Max) @ Ipp:
- 706V
- Current - Peak Pulse (10/1000µs):
- 5.7A (8/20µs)
- Power - Peak Pulse:
- 600W
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- 180pF @ 1MHz
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- DO-204AC (DO-15)
P6KE400CARL FAQ
1.How can I place an order for P6KE400CARL through Aetrix?
Please submit a Request for Quotation (RFQ) for P6KE400CARL 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 P6KE400CARL reliable?
The price and inventory of P6KE400CARL are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P6KE400CARL is usually 5 days.
3.What payment methods are accepted for P6KE400CARL?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6KE400CARL transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6KE400CARL?
P6KE400CARL orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6KE400CARL 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 P6KE400CARL?
For technical support, including P6KE400CARL datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6KE400CARL requirements.
6.How does Aetrix verify that P6KE400CARL is sourced from the original manufacturer or authorized distributors?
All P6KE400CARL 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 P6KE400CARL meets industry standards.
7.What is the process for return or replacement of P6KE400CARL?
All P6KE400CARL units undergo pre-shipment inspection (PSI). If there is an issue with P6KE400CARL, 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 P6KE400CARL part is unused and in its original packaging.
Return procedure for P6KE400CARL:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6KE400CARL 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…
