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STMicroelectronics P6KE68ARL
- Part No.:
- P6KE68ARL
- Manufacturer:
- STMicroelectronics
- Category:
- TVS Diodes
- Package:
- DO-204AC, DO-15, Axial
- Datasheet:
-
P6KE68ARL.pdf
- Description:
- TVS DIODE 58V 121V DO15
- Quantity:
- Payment:
- Shipping:
Inventory:1,495
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Product details
Overview
P6KE68ARL from STMicroelectronics is a unidirectional 600 W transient voltage suppression diode in DO-15 package, rated for 68 V breakdown voltage (VBR = 64.6–71.4 V at IBR = 1 mA), 105 V clamping voltage (VCL ≤ 105 V at IPP = 5.7 A, 10/1000 µs), and 175 °C maximum junction temperature - deployed in AC/DC power supplies and industrial I/O protection against IEC 61000-4-2 ESD (±30 kV air/contact) and IEC 61000-4-4 surge (4 kV level 4).
For engineers reviewing the P6KE68ARL datasheet, P6KE68ARL pinout, P6KE68ARL application, or P6KE68ARL equivalent, this TVS diode delivers verified 600 W peak pulse power (10/1000 µs), low dynamic resistance (RD = 0.021 Ω), sub-1 µA leakage at 55.1 V (VRM), and DO-15 mechanical compatibility with standard PCB footprints for robust overvoltage hardening.
Technical Context
The P6KE68ARL operates as a unidirectional avalanche clamp, leveraging planar junction technology to sustain 175 °C continuous junction operation while maintaining <1 µA reverse leakage at rated stand-off voltage (VRM = 58.1 V). Its VBR tolerance (±5%) and temperature coefficient αT = 10 × 10−4/°C enable predictable clamping across industrial thermal ranges.
It meets IEC 61000-4-2 (±30 kV contact/air), IEC 61000-4-4 (4 kV level 4), and UL 497B surge immunity standards, with validated 105 V clamping at 5.7 A (10/1000 µs) and 136 V at 11.1 A (8/20 µs), ensuring reliable protection of downstream MOSFETs, controllers, and signal conditioning circuits.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/typ/max) | 64.6 / 68.0 / 71.4 V at IBR = 1 mA - defines precise avalanche initiation threshold for repeatable overvoltage triggering |
| VRM | 58.1 V - maximum DC or RMS reverse operating voltage before leakage exceeds 1 µA, enabling safe interface with 48 V systems |
| VCL @ IPP | ≤105 V at 5.7 A (10/1000 µs) - limits transient voltage seen by protected ICs to safe levels during common surges |
| RD | 0.021 Ω - low dynamic resistance ensures minimal voltage overshoot during fast transients and high-current clamping |
| IPP (10/1000 µs) | 5.7 A - peak current handling capacity at standard surge waveform, directly usable for PCB trace sizing and layout margining |
| Tj max | +175 °C - enables deployment in high-ambient environments (e.g., enclosed power converters, motor drives) without derating |
| Leakage @ VRM | ≤1 µA at 25 °C - prevents parasitic loading on high-impedance sensor or reference circuits |
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 (unmarked end) | Current entry terminal under forward bias | Connected to system ground or low-side return path; must be routed with low-inductance traces for effective clamping |
| Cathode (banded end) | Avalanche conduction terminal under reverse overvoltage | Connected to protected line (e.g., DC input, signal rail); band orientation confirms polarity during manual placement |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power (10/1000 µs) | Supports sustained surge energy handling in industrial power rails without thermal runaway at Tj ≤ 175 °C |
| IEC 61000-4-2 ±30 kV ESD immunity | Validated air and contact discharge performance eliminates need for external ESD filters in front-end interfaces |
| Low RD = 0.021 Ω | Minimizes clamping voltage overshoot during fast-rising transients (<10 ns), critical for protecting sensitive gate drivers |
| UL 497B certified (QVGQ2.E136224) | Meets telecom surge safety requirements for primary-side protection in PoE injectors and DSLAM line cards |
| MSL Level 1, J-STD-020 compliant | Enables direct reflow assembly without baking or special handling, reducing manufacturing cost and risk |
Applications
| Industrial PLC Analog Input Protection | AC/DC SMPS Primary-Side Surge Clamping |
|---|---|
|
Use Scenario: Protecting 0–10 V analog inputs on programmable logic controller modules exposed to field wiring-induced surges and ESD. IC Role / Device Role / Timing Role: Unidirectional TVS placed between input terminal and ground, clamping transients before they reach precision op-amps and ADC front-ends. Use Value: Maintains signal integrity with <1 µA leakage at 58.1 V stand-off, preventing offset drift while surviving repeated ±30 kV ESD events per IEC 61000-4-2. |
Use Scenario: Suppressing line-to-ground surges on the bulk capacitor input of 24–48 V offline SMPS used in factory automation equipment. IC Role / Device Role / Timing Role: Fast-acting avalanche clamp absorbing 600 W (10/1000 µs) energy to prevent MOSFET avalanche failure and transformer insulation stress. Use Value: Limits clamped voltage to ≤105 V at 5.7 A, keeping primary-side FET VDS within SOA and extending converter lifetime under repetitive surge conditions. |
| Telecom Power Feeding Interface | Motor Drive Control Signal Isolation Barrier |
|
Use Scenario: Safeguarding PoE-powered device (PD) interface circuitry against longitudinal surges induced on Ethernet pairs during lightning events. IC Role / Device Role / Timing Role: UL 497B-certified unidirectional TVS installed on each data pair, referenced to isolated PD ground plane. Use Value: Delivers validated 4 kV IEC 61000-4-4 immunity and ±30 kV ESD protection without compromising 100BASE-TX signal integrity due to low CJ (~100 pF at 0 V). |
Use Scenario: Shielding isolated gate driver inputs (e.g., optocoupler or SiO2 isolator outputs) from coupling noise and ground bounce in 3-phase inverter control boards. IC Role / Device Role / Timing Role: Low-leakage TVS placed across isolated logic supply rails to clamp fast transients crossing isolation barriers. Use Value: Prevents false triggering of gate drivers with <1 µA leakage at 58.1 V, while its 175 °C rating supports operation adjacent to heat-generating IGBT modules. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar unidirectional TVS diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ68A | Same VBR range (64.6–71.4 V), but lower PPP = 400 W (10/1000 µs); DO-214AC (SMA) package, surface-mount only | Requires SMT reflow process; unsuitable for through-hole legacy designs or high-vibration environments where axial leads provide mechanical retention | Select when board space is constrained and automated assembly is available; verify thermal relief pad design for 400 W dissipation |
| 1N6287 | Legacy 600 W DO-15 part with wider VBR tolerance (±10%), higher VCL = 118 V at 5.1 A, and no IEC 61000-4-2 validation | Lacks certified ESD immunity and modern leakage specs; not recommended for new designs requiring compliance with EN 61000-6-2/6-4 | Acceptable only for cost-sensitive, non-compliant replacements in existing maintenance programs - avoid for CE/FCC-marked products |
Compared with SMAJ68A and 1N6287, P6KE68ARL uniquely combines 600 W surge rating, DO-15 through-hole robustness, ±5% VBR tight tolerance, and full IEC/UL certification - making it the preferred choice for industrial and telecom applications demanding reliability, compliance, and mechanical stability.
Availability
P6KE68ARL is available at Aetrix Electronics and suitable for industrial PLC analog input protection, AC/DC SMPS primary-side surge clamping, and telecom power feeding interface applications requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for P6KE68ARL 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, designing and manufacturing microcontrollers, power devices, sensors, and protection components for automotive, industrial, and consumer markets.
The P6KE series belongs to ST's high-reliability TVS diode portfolio, engineered specifically for robust overvoltage protection in harsh industrial and telecom environments where long-term stability, high-temperature operation, and international compliance are mandatory.
FAQ
What is the maximum clamping voltage of P6KE68ARL under a 10/1000 µs surge?
The maximum clamping voltage (VCL) is 105 V at 5.7 A for a 10/1000 µs waveform, measured at Tamb = 25 °C. This value increases linearly with junction temperature using αT = 10 × 10−4/°C, reaching ~112 V at Tj = 125 °C per datasheet Figure 5 and Equation 3.
Is P6KE68ARL suitable for bidirectional signal line protection?
No - P6KE68ARL is unidirectional (indicated by "A" suffix), designed for DC-biased lines like power rails or grounded-signal paths. For bidirectional protection (e.g., RS-485, USB D+/D−), use the P6KE68CARL variant, which features symmetrical clamping and dual avalanche structure.
Does P6KE68ARL require derating above 25 °C ambient temperature?
Yes - peak pulse power must be derated linearly above 25 °C per Figure 3: at 100 °C ambient, PPP drops to ~420 W (10/1000 µs); at 175 °C junction, it falls to 300 W. Layout must ensure adequate copper area (≥2 cm² per lead) to maintain thermal resistance below 3.5 °C/W per Figure 12.
Can P6KE68ARL be used in place of P6KE68A without changes to the PCB?
Yes - P6KE68ARL and P6KE68A share identical DO-15 mechanical dimensions, electrical specifications, and marking (P6KE68A printed on body). The "RL" suffix denotes tape-and-reel packaging (6000 pcs/reel); no layout or schematic modifications are required for substitution.
P6KE68ARL 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:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 58V
- Voltage - Breakdown (Min):
- 64.6V
- Voltage - Clamping (Max) @ Ipp:
- 121V
- Current - Peak Pulse (10/1000µs):
- 33A (8/20µs)
- Power - Peak Pulse:
- 600W
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- 625pF @ 1MHz
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- DO-204AC (DO-15)
P6KE68ARL FAQ
1.How can I place an order for P6KE68ARL through Aetrix?
Please submit a Request for Quotation (RFQ) for P6KE68ARL 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 P6KE68ARL reliable?
The price and inventory of P6KE68ARL are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P6KE68ARL is usually 5 days.
3.What payment methods are accepted for P6KE68ARL?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6KE68ARL transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6KE68ARL?
P6KE68ARL orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6KE68ARL 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 P6KE68ARL?
For technical support, including P6KE68ARL datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6KE68ARL requirements.
6.How does Aetrix verify that P6KE68ARL is sourced from the original manufacturer or authorized distributors?
All P6KE68ARL 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 P6KE68ARL meets industry standards.
7.What is the process for return or replacement of P6KE68ARL?
All P6KE68ARL units undergo pre-shipment inspection (PSI). If there is an issue with P6KE68ARL, 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 P6KE68ARL part is unused and in its original packaging.
Return procedure for P6KE68ARL:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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