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Vishay General Semiconductor - Diodes Division 5KP20-E3/73
- Part No.:
- 5KP20-E3/73
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- P600, Axial
- Datasheet:
-
5KP20-E3/73.pdf
- Description:
- TVS DIODE 20VWM 35.8VC P600
- Quantity:
- Payment:
- Shipping:
Inventory:5,041
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Product details
Overview
5KP20-E3/73 from Vishay General Semiconductor is a unidirectional TransZORB® transient voltage suppressor (TVS) diode in P600 package, designed for high-energy surge protection on DC power rails and signal lines. It features 5000 W peak pulse power (10/1000 μs), 20 V stand-off voltage (VWM), 32.4 V maximum clamping voltage (VC) at 154 A peak pulse current, and AEC-Q101 qualification for automotive-grade reliability.
For engineers reviewing the 5KP20-E3/73 datasheet, 5KP20-E3/73 pinout, 5KP20-E3/73 application, or 5KP20-E3/73 equivalent, this device is selected for robust overvoltage protection in switching power supply outputs, automotive ECUs, and industrial motor drive control circuits where fast response (<1 ns), low clamping ratio, and high surge current handling are critical.
Technical Context
The 5KP20-E3/73 employs a glass-passivated P600 junction optimized for repetitive 10/1000 μs surge waveforms at 0.01% duty cycle. Its unidirectional polarity enables integration into DC-biased lines without reverse conduction concerns, and its 175 °C maximum junction temperature supports operation in under-hood automotive environments.
Clamping performance is defined by VBR = 22.2–24.5 V at 5.0 mA test current and VC = 32.4 V at IPPM = 154 A, yielding a clamping ratio of 1.46 - a key metric for protecting downstream MOSFETs and ICs. Thermal derating follows a linear curve from 8.0 W at TL = 75 °C to zero at 175 °C junction temperature.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 20 V - Maximum continuous reverse operating voltage before clamping begins; sets minimum system DC rail margin. |
| VBR min/max | 22.2 V / 24.5 V at 5.0 mA - Breakdown threshold range defining turn-on consistency across production lots. |
| VC @ IPPM | 32.4 V at 154 A - Clamped voltage during worst-case 10/1000 μs surge; determines protected circuit's voltage stress ceiling. |
| PPPM | 5000 W - Peak pulse power rating per JEDEC standard; validates capability to absorb IEC 61000-4-5 Level 4 surges. |
| IFSM | 600 A - Non-repetitive forward surge current (8.3 ms half-sine); supports crowbar-style fault clearing in power supplies. |
| TJ max | 175 °C - Maximum junction temperature; enables use in engine control units and industrial drives without forced cooling. |
| Polarity | Unidirectional - Cathode-marked device; suitable only for DC-biased applications with defined voltage polarity. |
Pinout & Package
5KP20-E3/73 uses the P600 axial-leaded package: molded epoxy body with matte tin-plated leads, UL 94 V-0 rated, 9.5 mm body length, 1.32 mm lead diameter. Polarity indicated by cathode band.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Low-side connection point | Connected to ground or low-potential node; completes clamping path during overvoltage events. |
| Cathode | High-side connection point | Connected to protected line (e.g., +24 V rail); color band identifies this terminal for correct PCB orientation. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive electronics per stress test requirements including HTOL, TC, and ESD; supports PPAP documentation. |
| 5000 W peak pulse power (10/1000 μs) | Withstands IEC 61000-4-5 combination wave surges up to 4 kV open-circuit / 2 kA short-circuit without degradation. |
| Low incremental surge resistance | Minimizes VC overshoot during fast-rising transients; ensures tighter voltage clamping than standard Zener-based protectors. |
| Fast response time (<1 ns) | Activates before sensitive downstream components (e.g., MCU I/O, gate drivers) experience damaging overvoltage stress. |
| RoHS-compliant, JESD 201 Class 1A whisker tested | Meets automotive and industrial solderability and long-term reliability standards for lead-free reflow and wave soldering. |
Applications
| Automotive Engine Control Unit (ECU) | Industrial Switching Power Supply Output |
|---|---|
Use Scenario: Protection of 12 V/24 V microcontroller power inputs against load dump and alternator ripple transients. IC Role / Device Role / Timing Role: Unidirectional TVS clamp placed between power rail and chassis ground to shunt surge energy away from LDOs and MCU VCC pins. Use Value: Withstands 5000 W pulses while limiting clamped voltage to 32.4 V - below absolute maximum ratings of typical 36 V-tolerant automotive MCUs. |
Use Scenario: Output rail protection in 48 V telecom rectifiers subject to lightning-induced surges and inductive switching spikes. IC Role / Device Role / Timing Role: Primary overvoltage suppression element replacing crowbar SCR circuits; activated within nanoseconds of overvoltage detection. Use Value: Enables fuse-only fault clearing (no latch-up) due to self-resetting behavior after transient decay, reducing maintenance downtime. |
| Motor Drive Gate Driver Protection | Telecom Line Card Surge Protection |
Use Scenario: Shielding isolated gate driver ICs from Miller-induced voltage spikes during IGBT/MOSFET switching in variable frequency drives. IC Role / Device Role / Timing Role: Clamp placed across driver output and ground to limit VGS excursion beyond ±20 V rating of SiC MOSFET drivers. Use Value: 32.4 V clamping voltage ensures gate oxide integrity is preserved even during 154 A surge events on 20 V bias rails. |
Use Scenario: Secondary protection stage on -48 V DC distribution lines in central office equipment exposed to induced surges from nearby AC mains. IC Role / Device Role / Timing Role: High-power TVS deployed after primary gas discharge tube (GDT) to handle residual energy and improve let-through voltage. Use Value: 5000 W rating absorbs remaining surge energy after GDT arc quenching, preventing thermal runaway in downstream DC-DC converters. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ20A | Lower peak power (600 W), smaller SMB package, same VWM = 20 V, higher VC = 32.4 V at 14.3 A. | Suitable for board-level ESD/surge protection where space is constrained but energy levels are lower (e.g., USB ports). | Select SMBJ20A only when surge energy is ≤100 mJ; 5KP20-E3/73 remains required for >1 J events. |
| 1.5KE20A | Same P600 package, lower peak power (1500 W), identical VWM/VBR, VC = 30.0 V at 50 A. | Applicable in legacy designs with lower surge immunity requirements (IEC 61000-4-5 Level 2). | 1.5KE20A offers cost advantage for non-automotive applications but lacks AEC-Q101 qualification and fails at 5KP20-E3/73's 154 A surge level. |
Compared with SMBJ20A and 1.5KE20A, the 5KP20-E3/73 delivers 3.3× higher peak power than 1.5KE20A and 8.3× more than SMBJ20A - enabling single-device compliance with IEC 61000-4-5 Level 4 and ISO 7637-2 Pulse 5a without parallel staging.
Availability
5KP20-E3/73 is available at Aetrix Electronics and suitable for automotive ECU design, industrial power supply validation, and telecom infrastructure deployment requiring stable component supply across extended product lifecycles.
Supply support for 5KP20-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 high-reliability diodes, MOSFETs, and passive components for automotive, industrial, and computing markets.
The 5KP series was engineered specifically for high-energy transient suppression in DC power systems - emphasizing ruggedness, repeatable clamping, and AEC-Q101 compliance for mission-critical automotive and industrial applications.
FAQ
What is the clamping voltage of the 5KP20-E3/73 under maximum surge conditions?
The 5KP20-E3/73 clamps to 32.4 V at its rated peak pulse current of 154 A (10/1000 μs waveform). This value is guaranteed across the full operating temperature range and defines the maximum voltage seen by protected circuitry during a surge event. The clamping ratio of 1.46 (VC/VBR) reflects tight process control in Vishay's P600 glass-passivated junction fabrication.
Is the 5KP20-E3/73 suitable for bidirectional surge protection?
No - the 5KP20-E3/73 is unidirectional only, with cathode marked by a color band. It conducts only during positive transients relative to its cathode. For AC or bipolar signal line protection, a bidirectional variant such as 5KP20CA must be used; substituting 5KP20-E3/73 in such applications risks permanent failure due to reverse conduction.
Does the 5KP20-E3/73 meet automotive qualification standards?
Yes - the 5KP20-E3/73 carries AEC-Q101 qualification, verified through accelerated stress testing including high-temperature operating life (HTOL), temperature cycling (TC), and electrostatic discharge (HBM/MM). The "E3" suffix confirms RoHS compliance and JESD 201 Class 1A whisker resistance, meeting Tier 1 automotive supply chain requirements.
What is the maximum power dissipation of the 5KP20-E3/73 at elevated temperatures?
The 5KP20-E3/73 dissipates up to 8.0 W on an infinite heatsink at lead temperature (TL) = 75 °C. Power derates linearly to zero at 175 °C junction temperature, per Figure 5 in the Vishay datasheet 88308. At TL = 100 °C, allowable power drops to approximately 4.5 W - critical for thermally constrained automotive under-hood layouts.
How does the 5KP20-E3/73 compare to standard Zener diodes for surge protection?
Unlike standard Zener diodes, the 5KP20-E3/73 is optimized for high-current transient suppression: it handles 154 A peak pulses (vs. <1 A for most Zeners), achieves sub-nanosecond response, and maintains stable clamping under repetitive surges. Its P600 package provides superior thermal mass and surge energy absorption - making it unsuitable as a voltage reference but ideal as a dedicated surge protector.
5KP20-E3/73 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- P600, Axial
- Series:
- TransZorb®
- Packaging:
- Tape & Box (TB)
- Product Status:
- Obsolete
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 20V
- Voltage - Breakdown (Min):
- 22.2V
- Voltage - Clamping (Max) @ Ipp:
- 35.8V
- Current - Peak Pulse (10/1000µs):
- 140A
- Power - Peak Pulse:
- 5000W (5kW)
- 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:
- P600
5KP20-E3/73 FAQ
1.How can I place an order for 5KP20-E3/73 through Aetrix?
Please submit a Request for Quotation (RFQ) for 5KP20-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 5KP20-E3/73 reliable?
The price and inventory of 5KP20-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 5KP20-E3/73 is usually 5 days.
3.What payment methods are accepted for 5KP20-E3/73?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 5KP20-E3/73 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 5KP20-E3/73?
5KP20-E3/73 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 5KP20-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 5KP20-E3/73?
For technical support, including 5KP20-E3/73 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 5KP20-E3/73 requirements.
6.How does Aetrix verify that 5KP20-E3/73 is sourced from the original manufacturer or authorized distributors?
All 5KP20-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 5KP20-E3/73 meets industry standards.
7.What is the process for return or replacement of 5KP20-E3/73?
All 5KP20-E3/73 units undergo pre-shipment inspection (PSI). If there is an issue with 5KP20-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 5KP20-E3/73 part is unused and in its original packaging.
Return procedure for 5KP20-E3/73:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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