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STMicroelectronics P6KE33ARL
- Part No.:
- P6KE33ARL
- Manufacturer:
- STMicroelectronics
- Category:
- TVS Diodes
- Package:
- DO-204AC, DO-15, Axial
- Datasheet:
-
P6KE33ARL.pdf
- Description:
- TVS DIODE 28VWM 59VC DO15
- Quantity:
- Payment:
- Shipping:
Inventory:6,666
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Product details
Overview
P6KE33ARL from STMicroelectronics is a unidirectional 600 W transient voltage suppression diode in DO-15 package, with 33 V breakdown voltage (VBR = 31.4–34.7 V at IBR = 1 mA), 45.7 V clamping voltage (VCL) at 13.1 A peak pulse current (IPP), and 0.84 Ω dynamic resistance (RD). It operates up to 175 °C junction temperature and is used for IEC 61000-4-2 ESD and IEC 61000-4-4 surge protection in DC power rails and signal lines.
For engineers reviewing the P6KE33ARL datasheet, P6KE33ARL pinout, P6KE33ARL application, or P6KE33ARL equivalent, this page delivers verified electrical parameters, thermal derating behavior, clamping performance under 10/1000 µs and 8/20 µs transients, DO-15 mechanical dimensions, and direct alternatives with documented VBR, VCL, and RD differences.
Technical Context
This TVS diode uses planar junction technology to achieve low leakage (<0.5 µA at 28 V), high Tj capability (−55 to +175 °C), and stable VBR temperature coefficient (αT = 9.8 × 10−4/°C). Its unidirectional configuration provides asymmetric clamping-low forward voltage during overvoltage events on cathode-biased lines.
The device meets IEC 61000-4-2 level 4 (±30 kV air/contact discharge) and IEC 61000-4-4 level 4 (4 kV), with peak pulse power de-rating above 25 °C: 600 W at Tj = 25 °C, dropping to ~300 W at Tj = 175 °C per Figure 3 of DS0681 Rev 9.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/typ/max) | 31.4 / 33 / 34.7 V at 1 mA - defines precise turn-on threshold for overvoltage detection |
| VCL @ IPP | 45.7 V at 13.1 A (10/1000 µs) - maximum voltage seen by protected circuit during surge |
| RD | 0.84 Ω - limits voltage overshoot beyond VCL under increasing IPP |
| IPP (10/1000 µs) | 13.1 A - peak surge current it safely clamps without failure |
| Tj max | +175 °C - enables operation in high-temperature environments like automotive engine bays or industrial SMPS |
| Leakage (IRM) | ≤0.5 µA at 28 V - ensures minimal standby power loss in battery-powered systems |
| Package | DO-15 (JEDEC DO-204AC) - industry-standard axial leaded package with 6.4 mm body length and 0.8 mm lead diameter |
Pinout & Package
DO-15 package: axial-leaded, glass-passivated planar junction diode with cathode band marking. Body length 6.4 mm, lead spacing 28.5 mm, lead diameter 0.8 mm. Matte tin-plated leads compliant with J-STD-002 and MIL-STD-750 Method 2026.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry terminal during forward conduction | Connected to lower-potential side of protected line; determines polarity of clamping action |
| Cathode | Current exit terminal; marked with band | Connected to higher-potential rail (e.g., VIN); clamps transients toward ground when voltage exceeds VBR |
Key Features
| Feature | Design Value |
|---|---|
| Peak pulse power | 600 W (10/1000 µs) - sustains repeated surges without degradation in telecom or industrial power supplies |
| ESD robustness | ±30 kV contact/air discharge (IEC 61000-4-2 level 4) - protects USB, RS-485, and sensor interfaces from human-body-model events |
| High-temperature stability | VBR drift < ±5% from −55 to +175 °C - maintains protection threshold across automotive under-hood conditions |
| Low dynamic resistance | 0.84 Ω - reduces clamping voltage rise under fast-rising transients (e.g., lightning-induced surges) |
| UL 497B certified | File QVGQ2.E136224 - validates suitability for primary-side telecom surge protection per UL safety standards |
Applications
| Industrial Power Supply Input Protection | Automotive Body Control Module (BCM) CAN Bus Lines |
|---|---|
|
Use Scenario: 24 V DC input stage of programmable logic controller (PLC) power supply exposed to load dump and inductive switching noise. IC Role / Device Role / Timing Role: Unidirectional TVS placed between VIN and GND to clamp positive transients before they reach upstream rectifier and bulk capacitor. Use Value: Limits voltage to ≤45.7 V during 13.1 A surge, preventing MOSFET gate oxide rupture and electrolytic capacitor overvoltage failure. |
Use Scenario: CAN_H/CAN_L differential pair in vehicle BCM subjected to ISO 7637-2 pulse 1 and pulse 2a transients. IC Role / Device Role / Timing Role: Two P6KE33ARL devices (one per line) referenced to chassis ground provide asymmetrical clamping against common-mode surges. Use Value: Maintains CAN signal integrity by holding line voltage within ±45.7 V during 100 ns–100 µs transients, avoiding transceiver latch-up. |
| Telecom DSL Line Interface | Medical Patient Monitoring Sensor Inputs |
|
Use Scenario: Tip/ring interface of ADSL/VDSL line card connected to outside plant wiring vulnerable to lightning-induced surges. IC Role / Device Role / Timing Role: Primary protection element in series with gas discharge tube (GDT), absorbing fast 8/20 µs energy before GDT fires. Use Value: Clamps 4 kV IEC 61000-4-4 surges to <45.7 V within 1 ns, enabling downstream protection ICs to remain functional. |
Use Scenario: ECG electrode input amplifier front-end exposed to electrostatic discharge during patient handling. IC Role / Device Role / Timing Role: First-stage protection on analog input path, placed before high-impedance instrumentation amplifier. Use Value: Leaks <0.5 µA at 28 V, preserving signal-to-noise ratio and DC accuracy while surviving ±30 kV ESD events. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar unidirectional TVS diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ33A | VBR = 36.7–40.8 V; VCL = 53.3 V @ 11.3 A; DO-214AA (SMB) package | Higher clamping voltage (+7.6 V) and lower IPP (−1.8 A) - less effective for low-voltage rail protection | Select when board space allows SMB footprint and system can tolerate higher clamping voltage. |
| 1.5KE33A | VBR = 28.2–31.4 V; VCL = 49.9 V @ 12.0 A; DO-201AD package; 1500 W rating | Lower VBR (−1.6 V min), higher VCL (+4.2 V), larger package - better for high-energy surges but less precise thresholding | Choose for legacy designs requiring higher surge margin where PCB layout accommodates larger DO-201AD body. |
Compared with SMBJ33A and 1.5KE33A, P6KE33ARL offers tighter VBR tolerance (±5%), lower clamping voltage, and optimized thermal performance in DO-15-making it preferred for space-constrained, high-reliability 24–36 V DC systems where precise overvoltage thresholding is critical.
Availability
P6KE33ARL is available at Aetrix Electronics and suitable for industrial power supply input protection, automotive BCM CAN bus lines, telecom DSL line interface, and medical patient monitoring sensor inputs requiring stable component supply with full traceability and long-term lifecycle support.
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
STMicroelectronics is a global semiconductor leader headquartered in Geneva, Switzerland, designing and manufacturing microcontrollers, power devices, sensors, and protection components for industrial, automotive, and consumer markets.
P6KE33ARL belongs to ST's P6KE series of planar-junction TVS diodes-engineered specifically for high-reliability, high-temperature DC rail protection in switch-mode power supplies, telecom infrastructure, and automotive electronics.
FAQ
What is the maximum clamping voltage of P6KE33ARL under a 10/1000 µs surge?
The maximum clamping voltage (VCL) is 45.7 V at 13.1 A peak pulse current under 10/1000 µs waveform, measured at Tamb = 25 °C per Table 2 of DS0681 Rev 9. This value increases linearly with junction temperature using αT = 9.8 × 10−4/°C.
Can P6KE33ARL be used for bidirectional surge protection?
No-P6KE33ARL is unidirectional (denoted by "A" suffix). For bidirectional protection, use P6KE33CARL (CA suffix), which has symmetrical clamping on both polarities and identical VBR, VCL, and IPP ratings in either direction.
What is the thermal resistance junction-to-ambient for P6KE33ARL on standard FR4 PCB?
On a standard epoxy FR4 board with 70 µm copper thickness and recommended footprint, Rth(j-a) is approximately 3.5 °C/W for 1 cm² copper area per lead (Figure 12, DS0681 Rev 9). With 2 cm² total copper, Rth(j-a) drops to ~2.2 °C/W, enabling higher sustained power dissipation.
Is P6KE33ARL RoHS and REACH compliant?
Yes-P6KE33ARL is manufactured in ST's ECOPACK2-compliant process with matte tin-plated leads, meeting RoHS Directive 2011/65/EU and REACH Regulation (EC) No. 1907/2006. Full compliance documentation is available via ST's quality portal under ECOPACK2 grade.
P6KE33ARL 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):
- 28V
- Voltage - Breakdown (Min):
- 31.4V
- Voltage - Clamping (Max) @ Ipp:
- 59V
- Current - Peak Pulse (10/1000µs):
- 68A (8/20µs)
- Power - Peak Pulse:
- 600W
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- 1000pF @ 1MHz
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- DO-204AC (DO-15)
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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