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onsemi P6KE33ARL
- Part No.:
- P6KE33ARL
- Manufacturer:
- onsemi
- Category:
- TVS Diodes
- Package:
- T-18, Axial
- Datasheet:
-
P6KE33ARL.pdf
- Description:
- TVS DIODE 28.2VWM 45.7VC AXIAL
- Quantity:
- Payment:
- Shipping:
Inventory:6,208
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Product details
Overview
P6KE33ARL from ON Semiconductor is a unidirectional transient voltage suppressor (TVS) diode in axial-leaded Surmetic-40 package, designed to protect sensitive electronics against 600 W peak surge transients. It features a 28.2 V working peak reverse voltage (VRWM), 33.05 V nominal breakdown voltage (VBR) at 1 mA test current, and clamps to 45.7 V at 13.2 A peak pulse current - used in power supplies, industrial controls, and medical equipment for robust overvoltage protection.
For engineers reviewing the P6KE33ARL datasheet, pinout, applications, or equivalent options, key selection criteria include VRWM ≥ system DC bus voltage, clamping voltage margin relative to protected IC's absolute maximum rating, surge current capability under 1 ms pulses, and UL 497B recognition for isolated loop circuit compliance.
Technical Context
The P6KE33ARL operates as a unidirectional avalanche diode with fast <1 ns response time, enabling effective suppression of ESD and lightning-induced transients before downstream components experience overstress. Its thermal resistance (RJL = 20 °C/W) and 5.0 W steady-state power dissipation support reliable operation when mounted with 3/8″ lead length at ≤50 °C ambient.
Clamping behavior follows standardized 10/1000 µs waveform per Figure 4; derating applies above 25 °C ambient or for repetitive pulses per Figures 1–2. The device exhibits low leakage (<5 µA at VRWM) and a +0.098 %/°C temperature coefficient of VBR, ensuring stable threshold across operating temperature range (−55 to +150 °C).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRWM | 28.2 V - maximum continuous reverse voltage the device blocks without significant leakage; must exceed circuit's DC operating voltage. |
| VBR @ IT=1 mA | 33.05 V (nominal) - avalanche onset voltage; defines minimum clamping threshold under low-current stress. |
| VC @ IPP=13.2 A | 45.7 V - maximum clamped voltage during 600 W transient; determines worst-case overvoltage seen by protected load. |
| IPP | 13.2 A - peak pulse current supported at 1 ms duration; defines surge energy handling capacity (600 W). |
| Leakage @ VRWM | <5 µA - ensures minimal power loss and signal integrity in high-impedance bias networks. |
| Response Time | <1 ns - enables suppression before transient propagates into IC inputs; critical for protecting CMOS interfaces. |
| UL Recognition | UL 497B certified - validates suitability for isolated loop circuit protection in telecom and industrial safety-critical systems. |
Pinout & Package
Package: Surmetic-40 axial-leaded plastic case (Case 017AA), cathode indicated by polarity band. Lead temperature tolerance: 260 °C for 10 seconds at 1/16″ from case.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Low-side connection point | Connected to ground or low-voltage reference; completes conduction path during reverse-biased clamping event. |
| Cathode | High-side connection point | Connected to protected line (e.g., DC input rail); polarity band identifies this terminal for correct PCB orientation. |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power | Supports IEC 61000-4-5 Level 4 surge immunity (4 kV line-to-earth) in properly impedance-matched circuits. |
| Clamping voltage ≤45.7 V | Provides safe margin below 48 V system IC absolute maximum ratings (e.g., microcontrollers, RS-485 transceivers). |
| ESD rating >16 kV HBM | Meets IEC 61000-4-2 Level 4 (±8 kV contact) without external pre-filtering in board-level ESD protection schemes. |
| UL 497B certification | Validates use in safety-isolated telecom/data lines where regulatory approval for surge protection is mandatory. |
| −55 °C to +150 °C operating range | Enables deployment in automotive engine compartments, industrial PLCs, and outdoor power supply enclosures. |
Applications
| Industrial Power Supply Protection | Medical Equipment Input Stage |
|---|---|
Use Scenario: 24 V DC input rail in programmable logic controller (PLC) exposed to inductive switching surges from solenoid drivers. IC Role / Device Role / Timing Role: Unidirectional TVS placed across input terminals to clamp transients before they reach upstream DC/DC converter and MCU power rails. Use Value: Limits voltage excursion to ≤45.7 V during 600 W surges, preventing latch-up or permanent damage to 3.3 V/5 V logic and analog front-end ICs. | Use Scenario: Patient-connected auxiliary power input in diagnostic imaging equipment requiring isolation and EMC compliance. IC Role / Device Role / Timing Role: Primary overvoltage protector on secondary-side isolated DC bus feeding analog sensor signal conditioning circuitry. Use Value: UL 497B recognition confirms suitability for patient-isolated circuits; low leakage avoids interference with microvolt-level bio-signal measurements. |
| Telecom Line Interface | Automotive Body Control Module |
Use Scenario: Ethernet or RS-485 data line powered via PoE or local DC-DC, subject to induced lightning surges in building wiring. IC Role / Device Role / Timing Role: First-stage transient suppressor on power pair, coordinated with downstream GDT or polymer PTC for multi-stage protection. Use Value: Fast <1 ns response prevents overshoot propagation into PHY ICs; clamping voltage aligns with IEEE 802.3af PoE voltage limits. | Use Scenario: 12 V battery-supplied lighting control module subjected to load dump (ISO 7637-2 Pulse 5a) and jump-start transients. IC Role / Device Role / Timing Role: Secondary clamping device after primary TVS or varistor, absorbing residual energy not handled by bulk protection. Use Value: 13.2 A IPP rating supports sustained 12 V load dump events up to 600 W; −55 °C to +150 °C rating matches under-hood thermal requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ33A | Surface-mount SMB package; same VRWM (28.2 V), slightly higher VC (48.4 V @ 12.3 A); lower IPP (12.3 A). | Requires PCB re-layout; better suited for high-density consumer electronics vs. through-hole industrial designs. | Select SMBJ33A only if space-constrained layout and automated assembly justify SMT conversion. |
| 1.5KE33A | Same axial package but 1.5 kW rating; higher VRWM (28.2 V), same VBR (33.05 V), lower VC (49.9 V @ 30.1 A). | Over-spec'd for 600 W needs; introduces unnecessary cost and larger physical footprint without benefit. | Choose 1.5KE33A only when legacy 1.5 kW surge standards (e.g., older MIL-STD-1275) mandate higher peak power margin. |
Compared with SMBJ33A and 1.5KE33A, P6KE33ARL delivers optimal balance of proven 600 W surge handling, axial-leaded manufacturability, UL 497B compliance, and cost-effective protection for industrial 24–48 V systems - without over-engineering or layout disruption.
Availability
P6KE33ARL is available at Aetrix Electronics and suitable for industrial power supplies, medical equipment input stages, telecom line interfaces, and automotive body control modules requiring stable component supply and long-term lifecycle continuity.
Supply support for P6KE33ARL 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
ON Semiconductor is a global semiconductor supplier delivering energy-efficient, high-performance silicon solutions for automotive, industrial, cloud computing, and IoT applications.
The P6KE33ARL belongs to the P6KE6.8A Series of unidirectional TVS diodes engineered specifically for cost-sensitive, high-reliability overvoltage protection in industrial and medical power systems.
FAQ
What is the maximum clamping voltage of P6KE33ARL under standard surge conditions?
The P6KE33ARL clamps to a maximum of 45.7 V when subjected to its rated 13.2 A peak pulse current (IPP), measured using the standardized 10/1000 µs waveform. This value is specified in the Electrical Characteristics table at TA = 25°C and defines the upper voltage limit imposed on protected circuitry during a 600 W transient event. Engineers must verify that this clamping voltage remains safely below the absolute maximum ratings of downstream components.
Is P6KE33ARL RoHS-compliant and halogen-free?
Yes, P6KE33ARL is a Pb-free (RoHS-compliant) device, as confirmed by the "RLG" suffix variant designation in ON Semiconductor documentation and its listing in the company's official Pb-Free Packaging Reference Manual. While the datasheet does not explicitly state halogen-free status, ON Semiconductor's general policy for Surmetic-40 axial packages aligns with IEC 61249-2-21 requirements; full material declarations are available upon request for qualified customers.
Can P6KE33ARL be used in bidirectional protection circuits?
No, P6KE33ARL is strictly unidirectional and must be connected with correct polarity - cathode to the protected line, anode to ground. For bidirectional transient suppression (e.g., AC lines or differential data buses), a separate bidirectional variant such as P6KE33CA or a back-to-back diode configuration is required. Using P6KE33ARL in reverse-biased AC applications will result in forward conduction and failure.
What is the thermal resistance junction-to-lead for P6KE33ARL?
The thermal resistance junction-to-lead (RJL) for P6KE33ARL is 20 °C/W, measured with 3/8″ lead length at TL ≤ 25°C. This parameter governs how effectively heat generated during surge events transfers from the silicon die to the PCB copper or heatsink via the leads. Proper lead trimming and thermal relief design are essential to maintain reliability under repeated transient stress.
Does P6KE33ARL meet UL 497B requirements for isolated loop protection?
Yes, P6KE33ARL is explicitly covered under ON Semiconductor's UL 497B recognition (File #E210057, QVGQ2 category) for protector classification, as stated in the datasheet's Application Notes section. This certification validates its use in telecom and industrial isolated loop circuits where safety agency approval is mandatory - including strike voltage breakdown, endurance conditioning, and dielectric withstand testing.
P6KE33ARL Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Package/Case:
- T-18, Axial
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 28.2V
- Voltage - Breakdown (Min):
- 31.4V
- Voltage - Clamping (Max) @ Ipp:
- 45.7V
- Current - Peak Pulse (10/1000µs):
- 13.2A (8/20µs)
- Power - Peak Pulse:
- 600W
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- Axial
P6KE33ARL FAQ
1.How can I place an order for P6KE33ARL through Aetrix?
Please submit a Request for Quotation (RFQ) for P6KE33ARL 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 P6KE33ARL reliable?
The price and inventory of P6KE33ARL are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P6KE33ARL is usually 5 days.
3.What payment methods are accepted for P6KE33ARL?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6KE33ARL transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6KE33ARL?
P6KE33ARL orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6KE33ARL 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 P6KE33ARL?
For technical support, including P6KE33ARL datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6KE33ARL requirements.
6.How does Aetrix verify that P6KE33ARL is sourced from the original manufacturer or authorized distributors?
All P6KE33ARL 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 P6KE33ARL meets industry standards.
7.What is the process for return or replacement of P6KE33ARL?
All P6KE33ARL units undergo pre-shipment inspection (PSI). If there is an issue with P6KE33ARL, 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 P6KE33ARL part is unused and in its original packaging.
Return procedure for P6KE33ARL:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6KE33ARL Tags
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