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Vishay General Semiconductor - Diodes Division 5KP40HE3/73
- Part No.:
- 5KP40HE3/73
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- P600, Axial
- Datasheet:
-
5KP40HE3/73.pdf
- Description:
- TVS DIODE 40VWM 71.4VC P600
- Quantity:
- Payment:
- Shipping:
Inventory:9,875
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Product details
Overview
5KP40HE3/73 from Vishay General Semiconductor is a unidirectional TransZORB® transient voltage suppressor (TVS) diode in P600 package, rated for 40 V stand-off voltage (VWM), 64.5 V clamping voltage (VC) at 77.5 A peak pulse current (IPPM), and 5000 W peak pulse power (10/1000 μs). It is AEC-Q101 qualified and used to protect MOSFETs and ICs in automotive power supply outputs against inductive switching transients.
For engineers reviewing the 5KP40HE3/73 datasheet, 5KP40HE3/73 pinout, 5KP40HE3/73 application, or 5KP40HE3/73 equivalent, key selection criteria include its unidirectional polarity, 175 °C max junction temperature, RoHS-compliant matte tin-plated leads, and P600 package compatibility with high-surge industrial and automotive PCB layouts.
Technical Context
The 5KP40HE3/73 employs a glass-passivated P600 chip junction optimized for fast response (<1 ns) and low incremental surge resistance, enabling effective clamping of high-energy transients before downstream components fail. Its 10/1000 μs waveform rating reflects standardized surge immunity testing per ANSI/IEEE C62.35.
Designed for output-stage protection in switching power supplies, it replaces crowbar circuits by sustaining 77.5 A non-repetitive surge while allowing time for fuse interruption - requiring adequate heatsinking due to 8.0 W steady-state dissipation at TL = 75 °C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 40 V - Maximum continuous reverse operating voltage before clamping begins |
| VBR min/max | 44.4 V / 49.1 V at 5.0 mA - Breakdown voltage range defining turn-on threshold tolerance |
| VC @ IPPM | 64.5 V at 77.5 A - Clamped voltage during 5000 W transient, limiting stress on protected ICs |
| IPPM | 77.5 A - Peak surge current capability under 10/1000 μs waveform, derated above 25 °C |
| TJ max | 175 °C - Maximum junction temperature enabling operation in under-hood automotive environments |
| Polarity | Unidirectional - Cathode marked by color band; blocks forward conduction beyond ~3.5 V |
| Package | P600 - Axial-leaded, molded epoxy case (9.5 mm length) meeting UL 94 V-0 flammability |
Pinout & Package
P600 package: axial-leaded, cylindrical epoxy body with cathode indicated by color band; leads are matte tin-plated, solderable per J-STD-002, rated for 275 °C dip soldering (10 s max).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry point | Connected to lower-potential side (e.g., ground or return path) in unidirectional TVS configuration |
| Cathode | Clamping voltage reference node | Marked by color band; connected to protected line (e.g., 40 V rail) to clamp transients to ≤64.5 V |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive under-hood use including thermal cycling, humidity, and mechanical shock |
| 5000 W peak pulse power | Withstands high-energy surges (e.g., ISO 7637-2 Pulse 5a) without failure when properly mounted |
| Low clamping ratio (VC/VBR ≈ 1.31) | Minimizes overvoltage margin between breakdown and clamping, improving system-level protection margin |
| RoHS-compliant HE3 suffix | Meets JESD 201 Class 2 whisker resistance, ensuring long-term reliability in vibration-prone applications |
| 175 °C junction rating | Enables placement near heat-generating power stages without thermal derating penalties |
Applications
| Automotive Power Supply Output Protection | Industrial Motor Drive DC Bus Clamp |
|---|---|
Use Scenario: Protecting 40 V battery-fed ECUs from load-dump transients in 12 V/24 V vehicle systems. IC Role / Device Role / Timing Role: Unidirectional TVS placed across main power rail to clamp surges up to 64.5 V within nanoseconds. Use Value: Prevents latch-up or destruction of downstream PMICs and microcontrollers during ISO 16750-2 load dump events. | Use Scenario: Safeguarding IGBT gate drivers on 40 V DC bus in HVAC blower motor inverters. IC Role / Device Role / Timing Role: Fast-clamping device absorbing inductive kickback energy from relay or contactor switching. Use Value: Eliminates need for crowbar SCR circuits, reducing BOM count and enabling resettable protection. |
| Telecom DC-DC Converter Output | Consumer Appliance Power Input Stage |
Use Scenario: Shielding PoE-powered equipment (e.g., IP cameras) from Ethernet cable-induced surges. IC Role / Device Role / Timing Role: Standoff-rated TVS on secondary-side 40 V output to limit transient propagation into sensitive PHY ICs. Use Value: Maintains signal integrity and prevents data corruption during lightning-induced common-mode transients. | Use Scenario: Overvoltage suppression on 40 V auxiliary supply in smart washing machine control boards. IC Role / Device Role / Timing Role: Primary surge arrestor on rectified AC-derived rail exposed to mains-borne transients. Use Value: Extends lifetime of MCU and display driver ICs by limiting repetitive 64.5 V clamping excursions during brownouts. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ40AHE3/52 | Lower peak power (600 W), smaller SMB package, same VWM/VC but higher dynamic impedance | Not suitable for 5000 W load-dump events; limited to board-level ESD/surge below 100 A | Select only for space-constrained consumer designs where full 5KP-level surge immunity is not required |
| 1.5KE40A | Same VWM and VC, but 1500 W peak power and DO-201 package; no AEC-Q101 qualification | Lacks automotive qualification and thermal robustness for under-hood deployment | Acceptable for industrial bench power supplies but not for OEM automotive production |
Compared with SMBJ40AHE3/52 and 1.5KE40A, the 5KP40HE3/73 delivers 3.3× higher peak power and automotive-grade reliability in a thermally robust P600 package - critical for protecting safety-critical 40 V power rails where single-event failure is unacceptable.
Availability
5KP40HE3/73 is available at Aetrix Electronics and suitable for automotive ECU protection, industrial motor drive clamping, and telecom DC-DC converter output stabilization requiring stable component supply across extended temperature ranges and high-surge environments.
Supply support for 5KP40HE3/73 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, rectifiers, and protection devices with emphasis on high-reliability, high-power, and automotive-qualified solutions.
The 5KP series was engineered specifically for high-energy transient suppression in switching power supply outputs - targeting automotive, industrial, and telecom applications where crowbar circuit replacement and fuse-coordinated overvoltage protection are essential design requirements.
FAQ
What is the clamping voltage of the 5KP40HE3/73 under maximum surge conditions?
The 5KP40HE3/73 clamps to 64.5 V at its rated peak pulse current of 77.5 A (10/1000 μs waveform). This value is guaranteed per JEDEC test conditions and defines the maximum voltage imposed on protected circuitry during a worst-case transient event. The clamping voltage remains stable across its operational temperature range due to low dynamic impedance and thermal design of the P600 package.
Is the 5KP40HE3/73 suitable for automotive applications?
Yes, the 5KP40HE3/73 is AEC-Q101 qualified and explicitly designed for automotive use, including under-hood environments. Its 175 °C maximum junction temperature, JESD 201 Class 2 whisker resistance, and robust P600 package enable reliable operation in engine control units, body control modules, and ADAS power supplies subjected to ISO 7637-2 and ISO 16750-2 transient standards.
How does the 5KP40HE3/73 differ from standard 1.5KE series TVS diodes?
The 5KP40HE3/73 delivers 5000 W peak pulse power versus 1500 W for the 1.5KE40A, uses a larger P600 package for superior thermal dissipation, and carries AEC-Q101 qualification - unlike the commercial-grade 1.5KE series. Its lower clamping ratio (64.5 V / 44.4 V ≈ 1.45) and higher IPPM (77.5 A vs. 33.5 A) make it suitable for demanding load-dump protection where the 1.5KE40A would fail.
What is the meaning of the 'HE3' suffix in 5KP40HE3/73?
The 'HE3' suffix indicates RoHS-compliant construction with JESD 201 Class 2 whisker resistance certification, distinguishing it from commercial 'E3' variants. It confirms compliance with automotive reliability standards for tin-plated leads, including enhanced resistance to tin whisker growth under thermal and mechanical stress - a critical requirement for long-life automotive electronics.
Can the 5KP40HE3/73 be used in bidirectional configurations?
No, the 5KP40HE3/73 is unidirectional only, with polarity marked by a cathode band. It conducts in reverse bias during overvoltage events and blocks forward current above ~3.5 V. For bidirectional protection, two 5KP40HE3/73 devices must be connected in series opposition, or a dedicated bidirectional part like 5KP40CA should be selected instead.
5KP40HE3/73 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):
- 40V
- Voltage - Breakdown (Min):
- 44.4V
- Voltage - Clamping (Max) @ Ipp:
- 71.4V
- Current - Peak Pulse (10/1000µs):
- 70A
- Power - Peak Pulse:
- 5000W (5kW)
- Power Line Protection:
- No
- Applications:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 175°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Through Hole
- Supplier Device Package:
- P600
5KP40HE3/73 FAQ
1.How can I place an order for 5KP40HE3/73 through Aetrix?
Please submit a Request for Quotation (RFQ) for 5KP40HE3/73 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 5KP40HE3/73 reliable?
The price and inventory of 5KP40HE3/73 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 5KP40HE3/73 is usually 5 days.
3.What payment methods are accepted for 5KP40HE3/73?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 5KP40HE3/73 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 5KP40HE3/73?
5KP40HE3/73 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 5KP40HE3/73 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 5KP40HE3/73?
For technical support, including 5KP40HE3/73 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 5KP40HE3/73 requirements.
6.How does Aetrix verify that 5KP40HE3/73 is sourced from the original manufacturer or authorized distributors?
All 5KP40HE3/73 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 5KP40HE3/73 meets industry standards.
7.What is the process for return or replacement of 5KP40HE3/73?
All 5KP40HE3/73 units undergo pre-shipment inspection (PSI). If there is an issue with 5KP40HE3/73, 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 5KP40HE3/73 part is unused and in its original packaging.
Return procedure for 5KP40HE3/73:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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