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Vishay General Semiconductor - Diodes Division 5KP40A-E3/51
- Part No.:
- 5KP40A-E3/51
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- P600, Axial
- Datasheet:
-
5KP40A-E3/51.pdf
- Description:
- TVS DIODE 40VWM 64.5VC P600
- Quantity:
- Payment:
- Shipping:
Inventory:7,713
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Product details
Overview
5KP40A-E3/51 from Vishay General Semiconductor is a unidirectional TransZORB® transient voltage suppressor (TVS) diode in P600 package, designed for high-energy surge protection. It features 40 V stand-off voltage (VWM), 44.4–49.1 V breakdown voltage (VBR) at 5 mA, 64.5 V clamping voltage (VC) at 77.5 A peak pulse current, and 5000 W peak pulse power rating with 10/1000 μs waveform - used to protect MOSFETs, ICs, and sensor signal lines in automotive and industrial power supplies.
For engineers reviewing the 5KP40A-E3/51 datasheet, 5KP40A-E3/51 pinout, 5KP40A-E3/51 application, or 5KP40A-E3/51 equivalent, key selection criteria include unidirectional polarity, 175 °C max junction temperature, AEC-Q101 qualification, RoHS-compliant matte tin plating, and P600 package compatibility with high-surge industrial PCB layouts.
Technical Context
The 5KP40A-E3/51 operates as a clamping-type TVS diode, leveraging a glass-passivated P600 chip junction to achieve fast response (<1 ns) and low incremental surge resistance. Its unidirectional polarity enables integration into DC-biased rail protection circuits without reverse conduction during normal operation.
It is rated for 5000 W peak pulse power under JEDEC-standard 10/1000 μs waveform, with thermal derating above 25 °C per Fig. 2 and maximum 8.0 W steady-state power dissipation on infinite heatsink at TL = 75 °C - supporting robust overvoltage handling in switching power supply outputs and motor drive interfaces.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 40 V - Maximum continuous reverse operating voltage before clamping begins; defines safe DC bias margin for protected line. |
| VBR min/max | 44.4 V / 49.1 V at 5 mA - Confirmed breakdown range ensures reliable turn-on within ±5 % tolerance band. |
| VC @ IPPM | 64.5 V at 77.5 A - Clamping voltage limits downstream component stress during 10/1000 μs surge events. |
| PPPM | 5000 W - Peak pulse power capability enables protection against lightning-induced transients and inductive switching spikes. |
| TJ max | 175 °C - High junction temperature rating supports operation in under-hood automotive and industrial environments. |
| Polarity | Unidirectional - Requires cathode-band orientation toward positive rail; not suitable for AC or bidirectional signal line protection. |
| IFSM | 500 A - Non-repetitive forward surge rating validates robustness against short-duration fault currents. |
Pinout & Package
5KP40A-E3/51 uses the axial-lead P600 package: molded epoxy body over glass-passivated junction, UL 94 V-0 rated, with matte tin-plated leads solderable per J-STD-002. Cathode indicated by color band.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal | Connected to lower-potential side of protected DC rail; conducts during surge to clamp voltage. |
| Cathode | Reverse-biased reference terminal | Marked with color band; connected to higher-potential rail; defines clamping threshold relative to ground or supply. |
Key Features
| Feature | Design Value |
|---|---|
| 5000 W peak pulse power | Enables single-device protection against IEC 61000-4-5 Level 4 surges (4 kV/2 Ω) without cascaded stages. |
| AEC-Q101 qualified | Validated for automotive under-hood applications including engine control units and body electronics modules. |
| Low clamping ratio (VC/VBR ≈ 1.33) | Minimizes overvoltage overshoot during transient events, reducing stress on downstream MOSFET gate oxides and IC ESD structures. |
| P600 glass passivation | Ensures stable leakage performance and long-term reliability under high-humidity and thermal cycling conditions. |
| RoHS-compliant E3 suffix | Meets JESD 201 Class 1A whisker test; suitable for lead-free reflow and wave soldering up to 275 °C for 10 s. |
Applications
| Automotive Engine Control Unit (ECU) Power Input | Industrial Switching Power Supply Output |
|---|---|
Use Scenario: Protects 12 V battery-fed ECU input against load dump (ISO 7637-2 Pulse 5a) and alternator ripple. IC Role / Device Role / Timing Role: Primary clamping device placed upstream of DC/DC converter input stage. Use Value: Withstands 5000 W pulses while limiting voltage to ≤64.5 V, preventing damage to 75 V-rated input capacitors and controller ICs. | Use Scenario: Safeguards 48 V output rail of telecom rectifier against inductive kickback from relay switching and fan motors. IC Role / Device Role / Timing Role: Standoff-clamp TVS positioned directly across output terminals. Use Value: 40 V VWM provides 20 % margin above nominal 48 V rail; 64.5 V VC ensures downstream 65 V-rated load switches remain within safe operating area. |
| Motor Drive Gate Driver Protection | Automotive Sensor Signal Line Protection |
Use Scenario: Shields isolated gate driver ICs from Miller-induced voltage spikes during high-dV/dt IGBT/MOSFET switching. IC Role / Device Role / Timing Role: Local clamping element mounted near gate driver output pins. Use Value: Sub-1 ns response time captures fast-rising edge transients before they propagate to sensitive level-shift circuitry. | Use Scenario: Guards LIN bus or analog sensor inputs (e.g., pressure, temperature) against ESD and cable discharge events. IC Role / Device Role / Timing Role: Unidirectional TVS placed between signal line and chassis ground. Use Value: 2.0 μA max reverse leakage at 40 V preserves signal integrity in high-impedance sensor front-ends without loading error. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ40A | 600 W peak power, SMC package, 64.5 V VC at 9.9 A - significantly lower surge capacity. | Targeted at board-level signal line protection, not primary power rail clamping. | Select when space-constrained layouts require surface-mount and surge energy is ≤100 mJ. |
| 1.5KE40A | 1500 W peak power, DO-201 package, same VWM/VBR/VC specs but lower PPPM and IFSM ratings. | Used in cost-sensitive consumer power adapters where full 5 kW capability is unnecessary. | Choose for legacy designs requiring DO-201 footprint compatibility and moderate surge immunity. |
Compared with SMBJ40A and 1.5KE40A, the 5KP40A-E3/51 delivers 3.3× and 3.3× higher peak pulse power respectively, enabling single-device compliance with ISO 16750-2 and IEC 61000-4-5 high-energy surge requirements - critical for automotive and industrial main power rails.
Availability
5KP40A-E3/51 is available at Aetrix Electronics and suitable for automotive ECUs, industrial switching power supplies, motor drive gate drivers, and sensor interface protection requiring stable component supply across extended temperature and high-surge environments.
Supply support for 5KP40A-E3/51 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, rectifiers, and protection devices with emphasis on reliability and automotive-grade qualification.
The 5KP series was engineered specifically for high-energy transient suppression in primary DC power rails - targeting applications where crowbar circuits were previously required, such as switching power supply outputs and automotive battery-connected systems.
FAQ
What is the clamping voltage of the 5KP40A-E3/51 under standard surge conditions?
The 5KP40A-E3/51 has a maximum clamping voltage (VC) of 64.5 V when subjected to its rated peak pulse current of 77.5 A using the industry-standard 10/1000 μs waveform. This value is measured per JEDEC test conditions and ensures predictable overvoltage limiting during transient events. The clamping behavior is consistent across the full operating temperature range of −55 °C to +175 °C, making the 5KP40A-E3/51 suitable for under-hood automotive use where thermal stability is critical.
Is the 5KP40A-E3/51 suitable for bidirectional signal line protection?
No, the 5KP40A-E3/51 is a unidirectional TVS diode and is not suitable for bidirectional signal line protection such as USB, RS-485, or CAN bus interfaces. Its design assumes a fixed DC bias polarity, with the cathode terminal connected to the higher-potential side of the protected line. For bidirectional applications, a symmetric TVS like the SMAJ40A or dedicated bidirectional arrays must be used. The 5KP40A-E3/51 datasheet explicitly states "Available in uni-directional polarity only", confirming this limitation.
Does the 5KP40A-E3/51 meet automotive qualification standards?
Yes, the 5KP40A-E3/51 is AEC-Q101 qualified, as confirmed in the Vishay datasheet revision 20-Nov-12 (Document Number: 88308). This qualification covers stress tests including high-temperature operating life, temperature cycling, and mechanical shock - validating suitability for automotive powertrain and body electronics. The HE3 variant is explicitly marked for AEC-Q101, and the E3/51 variant shares identical die and construction, with E3 denoting RoHS-compliant commercial grade and /51 indicating packaging configuration.
What is the maximum steady-state power dissipation for the 5KP40A-E3/51?
The 5KP40A-E3/51 has a maximum steady-state power dissipation (PD) of 8.0 W when mounted on an infinite heatsink at a lead temperature (TL) of 75 °C, as specified in the "Maximum Ratings" table. This rating applies only under continuous DC or low-frequency conditions - not during transient events. In real-world applications, the device spends most time in high-impedance standby mode with <2.0 μA leakage at 40 V, so actual thermal load is negligible unless subjected to frequent repetitive surges.
How does the 5KP40A-E3/51 compare to the 1.5KE40A in terms of surge handling capability?
The 5KP40A-E3/51 offers 5000 W peak pulse power, whereas the 1.5KE40A is rated for only 1500 W - a 3.3× difference. This translates directly to higher survivability under IEC 61000-4-5 combination wave testing and longer operational life in high-dV/dt environments like motor drives. Both share identical VWM (40 V) and VC (64.5 V), but the 5KP40A-E3/51 sustains 77.5 A vs. 23.3 A for the 1.5KE40A, making it appropriate for primary rail protection where the 1.5KE40A serves secondary or auxiliary circuits.
5KP40A-E3/51 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- P600, Axial
- Series:
- TransZorb®
- Packaging:
- Bulk
- Product Status:
- Obsolete
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 40V
- Voltage - Breakdown (Min):
- 44.4V
- Voltage - Clamping (Max) @ Ipp:
- 64.5V
- Current - Peak Pulse (10/1000µs):
- 77.5A
- 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
5KP40A-E3/51 FAQ
1.How can I place an order for 5KP40A-E3/51 through Aetrix?
Please submit a Request for Quotation (RFQ) for 5KP40A-E3/51 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 5KP40A-E3/51 reliable?
The price and inventory of 5KP40A-E3/51 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 5KP40A-E3/51 is usually 5 days.
3.What payment methods are accepted for 5KP40A-E3/51?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 5KP40A-E3/51 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 5KP40A-E3/51?
5KP40A-E3/51 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 5KP40A-E3/51 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 5KP40A-E3/51?
For technical support, including 5KP40A-E3/51 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 5KP40A-E3/51 requirements.
6.How does Aetrix verify that 5KP40A-E3/51 is sourced from the original manufacturer or authorized distributors?
All 5KP40A-E3/51 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 5KP40A-E3/51 meets industry standards.
7.What is the process for return or replacement of 5KP40A-E3/51?
All 5KP40A-E3/51 units undergo pre-shipment inspection (PSI). If there is an issue with 5KP40A-E3/51, 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 5KP40A-E3/51 part is unused and in its original packaging.
Return procedure for 5KP40A-E3/51:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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