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Vishay General Semiconductor - Diodes Division P6KE33A-E3/73
- Part No.:
- P6KE33A-E3/73
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-204AC, DO-15, Axial
- Datasheet:
-
P6KE33A-E3/73.pdf
- Description:
- TVS DIODE 28.2VWM 45.7VC DO204AC
- Quantity:
- Payment:
- Shipping:
Inventory:4,386
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Product details
Overview
P6KE33A-E3/73 from Vishay General Semiconductor is a unidirectional Transient Voltage Suppressor (TVS) diode in DO-15 package, designed for primary overvoltage protection of DC power rails and signal lines. It features a 31.4 V minimum breakdown voltage (VBR), 28.2 V maximum stand-off voltage (VWM), 45.7 V clamping voltage (VC) at 13.1 A peak pulse current, and 600 W peak pulse power rating with 10/1000 µs waveform - deployed in automotive sensor interfaces, industrial I/O modules, and AC/DC adapter input stages.
For engineers reviewing the P6KE33A-E3/73 datasheet, P6KE33A-E3/73 pinout, P6KE33A-E3/73 application, or P6KE33A-E3/73 equivalent, key selection criteria include clamping performance under 13.1 A surge, thermal resistance (RθJL = 20 °C/W), unidirectional polarity marking, AEC-Q101 qualification status, and DO-15 mechanical compatibility with legacy through-hole PCB layouts.
Technical Context
The P6KE33A-E3/73 operates as a silicon avalanche diode with glass-passivated junction, delivering sub-nanosecond response to transient events. Its unidirectional configuration enables cathode-banded polarity identification and forward conduction during negative transients only when used with external biasing.
It sustains 100 A non-repetitive forward surge current (IFSM) per 8.3 ms half-sine wave and exhibits 0.098 %/°C temperature coefficient of breakdown voltage - enabling stable clamping across -55 °C to +175 °C operating junction range without active thermal compensation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min) | 31.4 V - ensures reliable avalanche initiation above normal 28.2 V rail operation |
| VC @ IPPM | 45.7 V at 13.1 A - limits downstream IC stress during 600 W transient events |
| PPPM | 600 W - handles high-energy surges from inductive switching or lightning-induced coupling |
| RθJL | 20 °C/W - supports thermal management with minimal heatsinking on standard PCB copper |
| TJ max | +175 °C - enables deployment in under-hood automotive and industrial motor drive environments |
| ID @ VWM | 1.0 µA - guarantees negligible leakage current at 28.2 V standby, preserving low-power system integrity |
Pinout & Package
Package: DO-15 (DO-204AC), axial-leaded, epoxy-molded case with matte tin-plated leads compliant to J-STD-002 and JESD 22-B102 solderability standards. Cathode identified by color band on body end.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Low-side reference terminal | Connected to ground or lowest potential node; enables clamping to reference during positive transients |
| Cathode | High-side transient sink | Marked with color band; connects to protected line - conducts avalanche current into ground path during overvoltage |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Ensures stable VBR tolerance (±5 %) and long-term reliability under humidity and thermal cycling |
| 600 W peak pulse power (10/1000 µs) | Protects against IEC 61000-4-5 Level 4 surges (4 kV line-earth) without derating in standard layouts |
| AEC-Q101 qualified (E3 suffix variant) | Validated for automotive powertrain and chassis applications requiring zero defect field performance |
| UL 94 V-0 molded compound | Prevents flame propagation in enclosed enclosures during catastrophic failure modes |
| 100 A IFSM rating | Withstands repeated inrush currents from capacitive loads or relay coil de-energization |
Applications
| Automotive Sensor Protection | Industrial PLC Input Protection |
|---|---|
Use Scenario: Protecting 3.3 V or 5 V CAN/LIN bus transceivers and analog sensor front-ends from load dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Primary clamping element placed between supply rail and ground, triggered within <1 ns of overvoltage onset. Use Value: Limits transient voltage to ≤45.7 V, preventing latch-up or gate oxide rupture in connected microcontrollers and transceivers. |
Use Scenario: Safeguarding 24 V digital input modules in factory automation systems exposed to relay contact bounce and solenoid back-EMF. IC Role / Device Role / Timing Role: Standoff device mounted directly at connector entry point, shunting surge energy before reaching optocoupler or Schmitt trigger inputs. Use Value: Maintains 28.2 V nominal operation while clamping 13.1 A surges to 45.7 V - compatible with 30 V-rated input stage components. |
| AC/DC Adapter Input Stage | Telecom Line Interface |
Use Scenario: Secondary-side overvoltage suppression on 12 V or 15 V SMPS outputs feeding sensitive logic circuits. IC Role / Device Role / Timing Role: Unidirectional TVS tied between output rail and GND, activated only during positive excursions exceeding VWM. Use Value: Adds <1 µA leakage at 28.2 V, avoiding efficiency loss while providing 600 W surge margin beyond EN 61000-4-5 requirements. |
Use Scenario: DC bias rail protection in PoE-powered Ethernet switches and base station line cards. IC Role / Device Role / Timing Role: Front-end suppressor on 48 V bias lines, coordinated with upstream gas discharge tubes for multi-stage surge handling. Use Value: Clamps 13.1 A transients to 45.7 V without thermal runaway, supporting continuous operation up to +85 °C ambient. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ33A | DO-214AA package, 33 V VBR, 52.5 V VC @ 11.4 A, 600 W rating | Surface-mount footprint; lower clamping voltage but reduced surge current capability | Select SMBJ33A for space-constrained PCBs where reflow assembly is required and 11.4 A peak current suffices. |
| 1.5KE33A | DO-201AD package, identical VBR/VC specs, 1.5 kW rating, higher IPPM (38.2 A) | Larger axial package; suited for higher-energy transients in power supply inputs | Choose 1.5KE33A when protecting 48 V telecom rectifiers or UPS battery banks needing >13.1 A surge margin. |
Compared with SMBJ33A and 1.5KE33A, the P6KE33A-E3/73 delivers optimal balance of cost, DO-15 through-hole compatibility, and 13.1 A surge handling - making it ideal for legacy industrial controls and automotive body electronics where board real estate and manual assembly remain constraints.
Availability
P6KE33A-E3/73 is available at Aetrix Electronics and suitable for automotive sensor modules, industrial PLC input stages, and AC/DC adapter secondary-side protection requiring stable component supply and RoHS-compliant sourcing.
Supply support for P6KE33A-E3/73 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
Vishay General Semiconductor is a global leader in discrete semiconductors, specializing in diodes, MOSFETs, optoelectronics, and passive components with emphasis on reliability and automotive-grade qualification.
The P6KE series belongs to Vishay's TRANSZORB® TVS family, engineered for cost-effective, high-surge-capability overvoltage protection in commercial and AEC-Q101-qualified applications across automotive, industrial, and telecom sectors.
FAQ
What is the clamping voltage of P6KE33A-E3/73 at its rated peak pulse current?
The P6KE33A-E3/73 has a maximum clamping voltage (VC) of 45.7 V at 13.1 A peak pulse current (IPPM) with a 10/1000 µs waveform. This value is measured under standardized transient conditions and defines the upper voltage limit imposed on protected circuitry during surge events. The P6KE33A-E3/73 maintains this clamping performance across its full operating temperature range.
Is P6KE33A-E3/73 suitable for automotive applications?
Yes, the P6KE33A-E3/73 is AEC-Q101 qualified when ordered with the HE3 suffix (e.g., P6KE33AHE3/73). The E3 suffix version is commercial grade but shares identical electrical characteristics and DO-15 packaging. For automotive use, specify the HE3 variant to ensure full qualification documentation and process control traceability - the P6KE33A-E3/73 itself meets all electrical and thermal specs required for body electronics and sensor interfaces.
How does the P6KE33A-E3/73 differ from bidirectional TVS diodes like P6KE33CA?
The P6KE33A-E3/73 is unidirectional and features a cathode band for polarity identification, conducting only during positive overvoltages relative to ground. In contrast, P6KE33CA is bidirectional with no polarity marking and clamps both positive and negative transients symmetrically. The P6KE33A-E3/73 offers lower leakage (<1 µA at 28.2 V) and is preferred for DC rail protection, whereas P6KE33CA suits AC-coupled signal lines or floating buses where polarity reversal occurs.
What is the thermal resistance of P6KE33A-E3/73 and how does it affect layout design?
The P6KE33A-E3/73 has a typical junction-to-lead thermal resistance (RθJL) of 20 °C/W, meaning each watt dissipated raises the junction temperature 20 °C above lead temperature. This allows effective heat transfer through axial leads to PCB copper pours without dedicated heatsinks. For sustained surge duty, maintain ≥5 mm lead length and connect both leads to ≥250 mil² copper areas to sustain full 600 W pulse capability - critical for reliable P6KE33A-E3/73 performance in high-temperature environments.
Can P6KE33A-E3/73 be used in parallel for higher surge current handling?
No, P6KE33A-E3/73 devices should not be paralleled due to VBR mismatch (±5 % tolerance), which causes uneven current sharing and premature failure of the lower-breakdown unit. Instead, select a single higher-rated device such as 1.5KE33A (38.2 A IPPM) or use staged protection with upstream GDTs. The P6KE33A-E3/73 is optimized for standalone 13.1 A surge suppression - verify system-level surge profiles before considering alternative architectures.
P6KE33A-E3/73 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-204AC, DO-15, Axial
- Series:
- TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- 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):
- 13.1A
- Power - Peak Pulse:
- 600W
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 175°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- DO-204AC (DO-15)
P6KE33A-E3/73 FAQ
1.How can I place an order for P6KE33A-E3/73 through Aetrix?
Please submit a Request for Quotation (RFQ) for P6KE33A-E3/73 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-E3/73 reliable?
The price and inventory of P6KE33A-E3/73 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P6KE33A-E3/73 is usually 5 days.
3.What payment methods are accepted for P6KE33A-E3/73?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6KE33A-E3/73 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6KE33A-E3/73?
P6KE33A-E3/73 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6KE33A-E3/73 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-E3/73?
For technical support, including P6KE33A-E3/73 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6KE33A-E3/73 requirements.
6.How does Aetrix verify that P6KE33A-E3/73 is sourced from the original manufacturer or authorized distributors?
All P6KE33A-E3/73 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-E3/73 meets industry standards.
7.What is the process for return or replacement of P6KE33A-E3/73?
All P6KE33A-E3/73 units undergo pre-shipment inspection (PSI). If there is an issue with P6KE33A-E3/73, 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-E3/73 part is unused and in its original packaging.
Return procedure for P6KE33A-E3/73:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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