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Diodes Incorporated P6KE33A-T
- Part No.:
- P6KE33A-T
- Manufacturer:
- Diodes Incorporated
- Category:
- TVS Diodes
- Package:
- DO-204AC, DO-15, Axial
- Datasheet:
-
P6KE33A-T.pdf
- Description:
- TVS DIODE 28.2VWM 45.7VC DO15
- Quantity:
- Payment:
- Shipping:
Inventory:2,942
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Product details
Overview
P6KE33A-T from Diodes Incorporated is a unidirectional 600W transient voltage suppressor (TVS) diode designed for primary-level overvoltage protection in DC power rails and signal lines. It features a 33V reverse standoff voltage (VRWM), 45.7V maximum clamping voltage at 13.2A peak pulse current, and DO-15 glass-passivated package for robust surge immunity in industrial power supplies and automotive ECUs.
For engineers reviewing the P6KE33A-T datasheet, P6KE33A-T pinout, P6KE33A-T application, or P6KE33A-T equivalent, key selection criteria include clamping voltage margin relative to protected IC VCC, 8.3ms surge current handling capability, unidirectional polarity for DC rail placement, and DO-15 thermal derating above +25°C ambient.
Technical Context
This TVS operates as a voltage-clamped shunt protector triggered by avalanche breakdown when transient voltage exceeds its 31.4V minimum breakdown voltage (VBR). Its 1.0mA test current ensures stable threshold detection under low-leakage conditions, while the 5.0µA max reverse leakage at VRWM minimizes standby power loss in always-on circuits.
The device delivers 600W peak pulse power (10/1000µs waveform) with fast sub-nanosecond response time, enabling effective suppression of ESD (IEC 61000-4-2), EFT (IEC 61000-4-4), and lightning-induced surges. Thermal resistance values (RθJA = 75°C/W, RθJL = 15°C/W) define PCB layout requirements for sustained power dissipation up to 5.0W at TL = +75°C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Pulse Power | 600W (10/1000µs waveform); sustains single high-energy transients without failure |
| Reverse Standoff Voltage | 33V (VRWM); maximum continuous DC operating voltage before clamping begins |
| Clamping Voltage | 45.7V at 13.2A IPP; limits downstream voltage stress during surge events |
| Breakdown Voltage | 31.4–34.7V at 1.0mA IT; defines precise avalanche initiation threshold |
| Leakage Current | <5.0µA at 33V VRWM; negligible standby current in battery-powered systems |
| Package | DO-15; industry-standard axial leaded package with UL 94V-0 flammability rating |
| Operating Temp | −55°C to +175°C; supports under-hood automotive and industrial environments |
Pinout & Package
DO-15 package: axial-leaded, molded plastic body (UL 94V-0), 0.4g weight, 9.5mm lead length for thermal mounting. Cathode band identifies polarity on unidirectional devices.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Low-side connection point | Connected to ground or return path; completes shunt conduction path during overvoltage |
| Cathode | High-side connection point | Connected to protected line; avalanche breakdown occurs between cathode and anode when VRWM exceeded |
Key Features
| Feature | Design Value |
|---|---|
| 600W Peak Pulse Power | Handles IEC 61000-4-5 Level 4 surges (4kV line-earth) without degradation |
| Glass Passivated Die | Enhances moisture resistance and long-term reliability in humid environments |
| Fast Response Time | <1.0ns; clamps transients before sensitive downstream ICs experience overstress |
| RoHS Compliant Finish | Lead-free plating meets EU Directive 2011/65/EU with full exemption documentation |
| Automotive-Qualified Option | AEC-Q101 qualified variants available for PPAP-capable production programs |
Applications
| Industrial Power Supply Protection | Automotive Body Control Module |
|---|---|
Use Scenario: 24V DC input rail in programmable logic controller (PLC) power stage exposed to load dump and inductive switching noise. IC Role / Device Role / Timing Role: Primary shunt TVS placed upstream of DC-DC converter input to clamp transients before regulation. Use Value: 45.7V clamping ensures MOSFET gate drivers and controller ICs remain below absolute maximum ratings during 100V/100ms load dump events. | Use Scenario: LIN bus transceiver power supply in door module subjected to battery reverse polarity and jump-start surges. IC Role / Device Role / Timing Role: Unidirectional TVS on VBAT rail to absorb reverse-battery energy and clamp positive spikes. Use Value: 33V VRWM allows normal operation across cold-crank (6.5V) to alternator regulation (14.5V), while 600W rating handles 12V jump-start transients. |
| Telecom Remote Radio Unit | Medical Infusion Pump Motor Driver |
Use Scenario: 48V PoE-powered remote radio unit exposed to lightning-induced surges on outdoor cabling. IC Role / Device Role / Timing Role: First-stage TVS on DC input before DC-DC isolation stage to reduce surge energy entering safety-isolated domain. Use Value: DO-15 package enables through-hole mounting on high-current traces; 75°C/W RθJA supports thermal design with minimal copper area. | Use Scenario: H-bridge motor driver supply rail in battery-operated infusion pump subject to ESD and cable discharge events. IC Role / Device Role / Timing Role: Local TVS at motor driver IC VDD pin to prevent latch-up during 8kV contact ESD per IEC 61000-4-2. Use Value: 5.0µA leakage preserves battery life over multi-year service intervals; 13.2A IPP exceeds typical ESD current injection profiles. |
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-T | Same VRWM (33V) and VC (45.7V), but 600W in SMB package (surface-mount) | Requires PCB rework for SMT assembly; lower RθJA (50°C/W) improves thermal performance in dense layouts | Select for space-constrained designs where automated assembly and thermal efficiency outweigh axial lead handling needs |
| 1.5KE33A-T | Same DO-15 package and electrical specs, but 1500W peak power rating (10/1000µs) | Higher surge margin for utility-grade equipment; larger junction capacitance may affect high-speed signal lines | Select when legacy 1.5KE footprint compatibility or higher energy absorption (e.g., AC mains input) is required |
Compared with SMBJ33A-T, P6KE33A-T offers proven axial-leaded mechanical robustness for high-vibration environments; compared with 1.5KE33A-T, it provides tighter clamping consistency at lower cost for standard 600W surge classes.
Availability
P6KE33A-T is available at Aetrix Electronics and suitable for industrial power supply protection, automotive body control modules, telecom remote radio units, and medical infusion pump motor drivers requiring stable component supply and long-lifecycle support.
Supply support for P6KE33A-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 suppression product line, engineered specifically for cost-effective, high-reliability overvoltage protection in DC power distribution networks across industrial, automotive, and communications infrastructure.
FAQ
Is P6KE33A-T RoHS compliant and halogen-free?
Yes, P6KE33A-T features a lead-free finish compliant with EU Directive 2011/65/EU (RoHS 2), including all applicable exemptions. Diodes Incorporated certifies this part as "Green" per its internal definitions, meaning it is both halogen-free and antimony-free, with full documentation available at diodes.com/quality/lead_free.html.
What is the maximum steady-state power dissipation for P6KE33A-T?
P6KE33A-T has a steady-state power dissipation (PD) of 5.0W when mounted on a copper land area of 40mm² with lead temperature (TL) held at +75°C. This value decreases linearly above +75°C per the derating curve in Figure 5 of DS21502 Rev. 20–4, reaching zero at +175°C junction temperature.
Does P6KE33A-T have AEC-Q101 qualification?
The base P6KE33A-T is not AEC-Q101 qualified; however, Diodes offers automotive-grade variants (e.g., P6KE33AHE3_T) that meet AEC-Q101 stress testing requirements, PPAP capability, and are manufactured in IATF 16949 certified facilities. These require separate ordering and are documented in Diodes' automotive product definitions portal.
How does P6KE33A-T differ from bidirectional P6KE33CA-T?
P6KE33A-T is unidirectional and includes a cathode band marking; it conducts only during positive transients relative to ground. P6KE33CA-T is bidirectional, lacks the cathode band, and clamps both polarities - making it suitable for AC lines or differential signal protection. Electrical parameters (VRWM, VC, IPP) are identical, but circuit placement and polarity awareness differ fundamentally.
P6KE33A-T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Package/Case:
- DO-204AC, DO-15, Axial
- Series:
- P6KE
- 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
- Power - Peak Pulse:
- 600W
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- DO-15
P6KE33A-T FAQ
1.How can I place an order for P6KE33A-T through Aetrix?
Please submit a Request for Quotation (RFQ) for P6KE33A-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 P6KE33A-T reliable?
The price and inventory of P6KE33A-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P6KE33A-T is usually 5 days.
3.What payment methods are accepted for P6KE33A-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6KE33A-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6KE33A-T?
P6KE33A-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6KE33A-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 P6KE33A-T?
For technical support, including P6KE33A-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6KE33A-T requirements.
6.How does Aetrix verify that P6KE33A-T is sourced from the original manufacturer or authorized distributors?
All P6KE33A-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 P6KE33A-T meets industry standards.
7.What is the process for return or replacement of P6KE33A-T?
All P6KE33A-T units undergo pre-shipment inspection (PSI). If there is an issue with P6KE33A-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 P6KE33A-T part is unused and in its original packaging.
Return procedure for P6KE33A-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6KE33A-T Tags
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ESD9B5.0ST5G
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Diodes Incorporated
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