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Vishay General Semiconductor - Diodes Division 5KP43AHE3/73
- Part No.:
- 5KP43AHE3/73
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- P600, Axial
- Datasheet:
-
5KP43AHE3/73.pdf
- Description:
- TVS DIODE 43VWM 69.4VC P600
- Quantity:
- Payment:
- Shipping:
Inventory:9,130
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Product details
Overview
5KP43AHE3/73 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 43 V stand-off voltage (VWM), 47.8–52.8 V breakdown voltage (VBR) at 5 mA, 69.4 V clamping voltage (VC) at 72 A peak pulse current, and 5000 W peak pulse power rating with 10/1000 μs waveform - deployed in automotive power supply outputs and industrial sensor interfaces.
For engineers reviewing the 5KP43AHE3/73 datasheet, 5KP43AHE3/73 pinout, 5KP43AHE3/73 application, or 5KP43AHE3/73 equivalent, this part delivers AEC-Q101-qualified surge immunity for 12 V/24 V systems, low incremental surge resistance, fast response time, and RoHS-compliant matte tin-plated leads suitable for J-STD-002 soldering.
Technical Context
This TVS diode operates as a unidirectional clamping device, activated when reverse voltage exceeds its breakdown threshold (VBR), diverting transient energy to ground while limiting downstream voltage to ≤69.4 V. Its P600 glass-passivated junction enables robust 5000 W pulse handling with 0.01% duty cycle and thermal stability up to TJ = 175 °C.
The 5KP43AHE3/73 exhibits 2.0 μA maximum reverse leakage at 43 V, 3.5 V forward voltage at 100 A, and a temperature coefficient of VBR at +0.105 %/°C - enabling predictable clamping behavior across automotive temperature ranges (−55 °C to +175 °C).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 43 V - maximum continuous reverse operating voltage before clamping initiates |
| VBR (min/max) | 47.8 V / 52.8 V at 5 mA - precise breakdown threshold defining turn-on sensitivity |
| VC @ IPPM | 69.4 V at 72 A - clamped voltage during 10/1000 μs surge, limiting stress on protected ICs |
| PPPM | 5000 W - peak pulse power capability under standardized 10/1000 μs waveform |
| IFSM | 600 A - non-repetitive forward surge current rating (8.3 ms half-sine wave) |
| TJ max. | +175 °C - maximum junction temperature supporting under-hood automotive deployment |
| Polarity | Unidirectional - cathode marked by color band; blocks forward conduction until breakdown |
Pinout & Package
Package: P600 molded epoxy body with glass-passivated chip junction; UL 94 V-0 rated; matte tin-plated leads; cathode indicated by color band.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction path | Connected to system ground or lower-potential rail; conducts during overvoltage clamp |
| Cathode | Reverse-biased clamping node | Connected to protected line (e.g., 12 V rail); initiates avalanche breakdown above VBR |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive-grade reliability including temperature cycling, humidity, and surge endurance |
| 5000 W peak pulse power | Withstands high-energy transients (e.g., ISO 7637-2 Pulse 5a) without failure |
| Low clamping ratio (VC/VBR ≈ 1.36) | Minimizes overvoltage margin between breakdown and clamping, enhancing protection precision |
| Fast response time (<1 ns) | Activates before sensitive downstream components (e.g., MCU I/O, MOSFET gates) are damaged |
| RoHS-compliant & whisker-tested (JESD 201 Class 2) | Ensures long-term solder joint integrity in high-reliability industrial and automotive assemblies |
Applications
| Automotive Power Supply Protection | Industrial Sensor Interface Protection |
|---|---|
|
Use Scenario: Protecting 12 V battery-fed ECUs against load dump and alternator transients per ISO 7637-2. IC Role / Device Role / Timing Role: Unidirectional TVS clamping device placed at input stage of DC-DC converter or LDO regulator. Use Value: Limits voltage to ≤69.4 V during 100 V/100 ms load dump events, preventing damage to upstream regulators and downstream microcontrollers. |
Use Scenario: Safeguarding analog sensor outputs (e.g., pressure, temperature) in factory automation PLC modules. IC Role / Device Role / Timing Role: Reverse-biased protection element on 4–20 mA or 0–10 V signal lines exposed to ESD and inductive switching noise. Use Value: Clamps fast-rising transients (<1 ns response) while maintaining <2.0 μA leakage at 43 V, preserving signal accuracy and ADC resolution. |
| Telecom DC Power Feeds | Consumer Power Adapter Outputs |
|
Use Scenario: Surge suppression on −48 V telecom rectifier outputs subject to lightning-induced surges. IC Role / Device Role / Timing Role: Primary overvoltage clamp on secondary-side DC bus feeding PoE controllers or line cards. Use Value: Absorbs 5000 W pulses without degradation, meeting ITU-T K.20/21 immunity requirements for central office equipment. |
Use Scenario: Secondary-side protection in wall-mounted AC/DC adapters for smart home hubs and displays. IC Role / Device Role / Timing Role: Final-stage TVS on regulated 5 V/12 V output rail before connector interface. Use Value: Prevents field failures from user-induced hot-plug transients and capacitive discharge events, validated per IEC 61000-4-5 Level 3. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ43A | Lower PPPM (600 W), SMC package (smaller footprint), same VWM (43 V), higher VC (70.1 V at 5.7 A) | Targeted at space-constrained consumer electronics; insufficient for ISO 7637-2 load dump | Select SMBJ43A only where surge energy is ≤600 W and PCB area is critical; not AEC-Q101 qualified |
| 1.5KE43A | Same VWM (43 V), lower PPPM (1500 W), DO-201 package, higher VC (70.1 V at 17.1 A), no AEC-Q101 qualification | Legacy industrial designs with moderate surge exposure; lacks automotive validation | Choose 1.5KE43A for cost-sensitive non-automotive applications; verify thermal derating at TL > 75 °C |
Compared with SMBJ43A and 1.5KE43A, the 5KP43AHE3/73 provides 3.3× and 3.3× higher peak pulse power respectively, AEC-Q101 qualification for automotive use, and superior thermal dissipation via P600 package - making it the sole option for high-energy, mission-critical DC rail protection.
Availability
5KP43AHE3/73 is available at Aetrix Electronics and suitable for automotive electronic control units, industrial sensor signal conditioning, and telecom DC power distribution requiring stable component supply and long-term lifecycle support.
Supply support for 5KP43AHE3/73 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 reliability and performance in harsh environments.
The 5KP series was engineered specifically for high-power transient suppression in automotive and industrial power systems, targeting replacement of crowbar circuits with robust, self-resetting clamping capability.
FAQ
What is the clamping voltage of the 5KP43AHE3/73 under standard surge conditions?
The 5KP43AHE3/73 has a maximum clamping voltage (VC) of 69.4 V when subjected to its rated peak pulse current of 72 A using the 10/1000 μs waveform. This value is measured per JEDEC standards and ensures downstream components see limited overvoltage during transient events. The clamping performance is guaranteed across the full operating temperature range and forms the basis for circuit protection margin calculations in designs using the 5KP43AHE3/73.
Is the 5KP43AHE3/73 suitable for automotive applications?
Yes, the 5KP43AHE3/73 is AEC-Q101 qualified and explicitly rated for automotive use, including under-hood environments. Its 175 °C maximum junction temperature, robust P600 package, and compliance with ISO 7637-2 load dump requirements make it appropriate for protecting engine control modules, body control units, and ADAS power supplies. The HE3 suffix confirms AEC-Q101 qualification and JESD 201 Class 2 whisker resistance - both essential for automotive production.
How does the 5KP43AHE3/73 differ from the 5KP43A-E3/73 variant?
The 5KP43AHE3/73 includes the "H" prefix denoting AEC-Q101 qualification and JESD 201 Class 2 whisker testing, whereas the 5KP43A-E3/73 is commercial-grade (JESD 201 Class 1A). Both share identical electrical parameters (VWM = 43 V, VC = 69.4 V, PPPM = 5000 W) and P600 packaging, but only the HE3 version is approved for automotive production. The "H" designation reflects additional stress testing and screening required for automotive reliability - a distinction critical for OEM and Tier 1 design-in.
What is the maximum reverse leakage current for the 5KP43AHE3/73 at rated stand-off voltage?
The 5KP43AHE3/73 specifies a maximum reverse leakage current (ID) of 2.0 μA at its rated stand-off voltage (VWM) of 43 V and TA = 25 °C. This low leakage preserves signal integrity in high-impedance sensor interfaces and minimizes standby power loss in always-on automotive modules. Leakage remains within specification across the full −55 °C to +125 °C ambient range, ensuring consistent performance in real-world deployment of the 5KP43AHE3/73.
Can the 5KP43AHE3/73 be used in bidirectional configurations?
No, the 5KP43AHE3/73 is unidirectional only, as confirmed in the Vishay datasheet. It conducts in reverse bias above VBR and blocks forward current until ~3.5 V (VF at 100 A). For bidirectional protection, two 5KP43AHE3/73 devices must be connected in series opposition, or a dedicated bidirectional TVS (e.g., 5KP43CA) should be selected. Using a single 5KP43AHE3/73 in bidirectional mode risks forward conduction failure and inadequate positive-going transient suppression.
5KP43AHE3/73 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- P600, Axial
- Series:
- TransZorb®
- Packaging:
- Tape & Box (TB)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 43V
- Voltage - Breakdown (Min):
- 47.8V
- Voltage - Clamping (Max) @ Ipp:
- 69.4V
- Current - Peak Pulse (10/1000µs):
- 72A
- 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
5KP43AHE3/73 FAQ
1.How can I place an order for 5KP43AHE3/73 through Aetrix?
Please submit a Request for Quotation (RFQ) for 5KP43AHE3/73 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 5KP43AHE3/73 reliable?
The price and inventory of 5KP43AHE3/73 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 5KP43AHE3/73 is usually 5 days.
3.What payment methods are accepted for 5KP43AHE3/73?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 5KP43AHE3/73 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 5KP43AHE3/73?
5KP43AHE3/73 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 5KP43AHE3/73 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 5KP43AHE3/73?
For technical support, including 5KP43AHE3/73 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 5KP43AHE3/73 requirements.
6.How does Aetrix verify that 5KP43AHE3/73 is sourced from the original manufacturer or authorized distributors?
All 5KP43AHE3/73 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 5KP43AHE3/73 meets industry standards.
7.What is the process for return or replacement of 5KP43AHE3/73?
All 5KP43AHE3/73 units undergo pre-shipment inspection (PSI). If there is an issue with 5KP43AHE3/73, 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 5KP43AHE3/73 part is unused and in its original packaging.
Return procedure for 5KP43AHE3/73:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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