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Vishay General Semiconductor - Diodes Division 5KP70HE3/73
- Part No.:
- 5KP70HE3/73
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- P600, Axial
- Datasheet:
-
5KP70HE3/73.pdf
- Description:
- TVS DIODE 70VWM 125VC P600
- Quantity:
- Payment:
- Shipping:
Inventory:3,590
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Product details
Overview
5KP70HE3/73 from Vishay General Semiconductor is a unidirectional TransZORB® transient voltage suppressor (TVS) diode in P600 package, designed for high-energy surge clamping in power supply outputs and automotive electronics. It features 70 V standoff voltage (VWM), 77.8–86.0 V breakdown range (VBR), 5000 W peak pulse power (10/1000 μs), 44.2 A peak pulse current (IPPM), and clamps to ≤113 V at rated surge - protecting MOSFETs, ICs, and sensor signal lines against inductive switching transients.
For engineers reviewing the 5KP70HE3/73 datasheet, 5KP70HE3/73 pinout, 5KP70HE3/73 application, or 5KP70HE3/73 equivalent, this part is selected for AEC-Q101-qualified automotive power rail protection, high-reliability industrial DC bus clamping, and crowbar-circuit replacement where 70 V nominal system voltage and 5 kW surge handling are required.
Technical Context
This TVS diode employs a glass-passivated P600 chip junction with uni-directional polarity and low incremental surge resistance, enabling fast response (<1 ns) and stable clamping under repetitive 0.01% duty cycle surges. Its thermal design supports operation up to 175 °C junction temperature and 8.0 W steady-state power dissipation on an infinite heatsink at TL = 75 °C.
The device is qualified to AEC-Q101, uses matte tin-plated leads compliant with J-STD-002 and JESD 22-B102, and meets JESD 201 Class 2 whisker resistance. The cathode is marked by a color band, and the molded epoxy case complies with UL 94 V-0 flammability rating.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 70 V - maximum continuous reverse operating voltage before clamping initiates |
| VBR (Breakdown Voltage) | 77.8–86.0 V at 5 mA - guaranteed conduction onset range for reliable overvoltage detection |
| VC (Clamping Voltage) | ≤113 V at 44.2 A IPPM - limits downstream component stress during 10/1000 μs surge events |
| PPPM (Peak Pulse Power) | 5000 W - sustains single high-energy transients without failure per JEDEC test conditions |
| IFSM (Surge Current) | 600 A (8.3 ms half-sine) - withstands short-duration fault currents typical of power supply faults |
| TJ max. | 175 °C - enables use in under-hood automotive and high-ambient industrial environments |
| Polarity | Uni-directional - protects only against positive transients relative to cathode, suitable for DC power rails |
Pinout & Package
Package: P600 - axial-leaded, molded epoxy body with glass-passivated junction; 9.5 mm length, 9.1 mm diameter; RoHS-compliant, AEC-Q101 qualified (HE3 suffix); cathode denoted by color band.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (banded end) | Current entry point during forward conduction | Connected to lower-potential side of protected circuit; used only during fault-induced forward surge |
| Cathode (color-banded end) | Clamping reference terminal | Connected to higher-potential rail (e.g., +12 V, +48 V); defines clamping threshold relative to ground or return |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive under-hood applications including engine control units and battery management systems |
| 5000 W peak pulse power (10/1000 μs) | Handles high-energy load-dump and ISO 7637-2 Pulse 5a transients without degradation |
| Low clamping ratio (VC/VBR ≈ 1.34) | Minimizes overvoltage margin between breakdown and clamping, reducing stress on downstream MOSFETs and regulators |
| JESD 201 Class 2 whisker resistance | Ensures long-term solder joint reliability in high-vibration environments such as automotive chassis mounting |
| UL 94 V-0 molded epoxy case | Provides flame-retardant mechanical protection and insulation integrity in safety-critical power systems |
Applications
| Automotive Power Rail Protection | Industrial DC Bus Clamping |
|---|---|
|
Use Scenario: Suppressing load-dump transients (ISO 7637-2 Pulse 5a) on 12 V/24 V vehicle battery lines feeding ECUs and infotainment systems. IC Role / Device Role / Timing Role: Uni-directional TVS diode placed between battery rail and ground, clamping surges within nanoseconds. Use Value: Prevents latch-up or destruction of downstream PMICs and microcontrollers by limiting voltage to ≤113 V during 100 V/350 ms transients. |
Use Scenario: Protecting 48 V telecom rectifier outputs and industrial PLC power inputs from inductive switching spikes. IC Role / Device Role / Timing Role: Standoff-rated clamping device mounted across DC output terminals to shunt surge energy to ground. Use Value: Enables crowbar-free overvoltage protection with 5 kW pulse handling, eliminating need for complex SCR-based shutdown circuits. |
| Sensor Signal Line Protection | Switching Power Supply Output Protection |
|
Use Scenario: Safeguarding analog sensor outputs (e.g., pressure, temperature) connected to automotive harnesses prone to ESD and coupled transients. IC Role / Device Role / Timing Role: Low-leakage (≤2 μA at 70 V) uni-directional clamp placed at connector interface. Use Value: Maintains signal integrity under normal operation while clamping fast transients to <113 V, preventing ADC saturation or op-amp damage. |
Use Scenario: Replacing traditional crowbar circuits on SMPS secondary-side outputs (e.g., 70 V DC telecom supplies). IC Role / Device Role / Timing Role: Primary overvoltage suppression element across regulated output, triggered only during fault conditions. Use Value: Allows fuse or breaker coordination - absorbs surge energy long enough for upstream protection to clear, enabling system reset without component replacement. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ70A-E3/52 | Lower peak power (600 W), SMC package, 70 V VWM, 100 V VC at 6.2 A | Targeted at board-level signal line protection, not high-power rail clamping | Select when space-constrained PCB layout and sub-kW surge levels apply; not suitable for load-dump replacement |
| 1.5KE70A | Same VWM (70 V) and P600 package, but 1500 W PPPM and higher VC (115 V at 13 A) | Lacks AEC-Q101 qualification and JESD 201 Class 2 whisker rating | Acceptable for non-automotive industrial use where qualification and long-term reliability under vibration are not mandated |
Compared with SMBJ70A-E3/52 and 1.5KE70A, the 5KP70HE3/73 delivers 3.3× higher surge power handling and automotive-grade reliability - making it the only choice for AEC-Q101-compliant 70 V rail protection requiring 5 kW transient absorption without PCB redesign.
Availability
5KP70HE3/73 is available at Aetrix Electronics and suitable for automotive ECU protection, industrial 48 V DC bus clamping, and telecom power supply output safeguarding requiring stable component supply, full traceability, and long-lifecycle support.
Supply support for 5KP70HE3/73 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, TVS devices, and optoelectronics with emphasis on high-reliability, high-power, and automotive-qualified components.
The 5KP series was engineered specifically for high-energy transient suppression in automotive and industrial power systems - delivering robust 5 kW clamping performance in the standardized P600 package with AEC-Q101 validation.
FAQ
What is the clamping voltage of the 5KP70HE3/73 under maximum rated surge current?
The 5KP70HE3/73 clamps to a maximum of 113 V when subjected to its rated peak pulse current of 44.2 A (10/1000 μs waveform). This value is measured and guaranteed per JEDEC standards and ensures downstream components experience controlled overvoltage stress during transient events. The 5KP70HE3/73 maintains this clamping performance across its qualified temperature range and lifetime.
Is the 5KP70HE3/73 suitable for automotive applications?
Yes, the 5KP70HE3/73 is explicitly AEC-Q101 qualified and manufactured with JESD 201 Class 2 whisker-resistant leads, UL 94 V-0 molding compound, and tested for operation from –55 °C to +175 °C. These attributes make the 5KP70HE3/73 appropriate for under-hood automotive use, including battery line protection and ECU power rail clamping per ISO 7637-2 requirements.
How does the 5KP70HE3/73 differ from standard 1.5KE70A TVS diodes?
The 5KP70HE3/73 provides 5000 W peak pulse power versus 1500 W for the 1.5KE70A, has tighter clamping (113 V vs. 115 V), and carries AEC-Q101 qualification and JESD 201 Class 2 whisker resistance - features absent in the 1.5KE70A. The 5KP70HE3/73 is therefore specified for higher-reliability, higher-energy automotive and industrial applications where the 1.5KE70A would be insufficient.
What is the meaning of the 'HE3' suffix in 5KP70HE3/73?
The 'HE3' suffix denotes RoHS-compliant construction with AEC-Q101 qualification and JESD 201 Class 2 whisker resistance. It distinguishes the 5KP70HE3/73 from commercial-grade 'E3' variants (e.g., 5KP70A-E3), which lack automotive qualification and enhanced lead finish reliability. The '/73' indicates packaging in 13" paper tape and reel, 800 units per reel.
Can the 5KP70HE3/73 replace crowbar circuits in power supplies?
Yes - the 5KP70HE3/73 was explicitly designed for crowbar-circuit replacement in switching power supply outputs. Its 5000 W surge capability allows it to absorb transient energy long enough for upstream fuses or breakers to open, enabling safe system reset. Unlike SCR-based crowbars, the 5KP70HE3/73 requires no control circuitry and resets automatically after the surge passes.
5KP70HE3/73 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):
- 70V
- Voltage - Breakdown (Min):
- 77.6V
- Voltage - Clamping (Max) @ Ipp:
- 125V
- Current - Peak Pulse (10/1000µs):
- 40A
- 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
5KP70HE3/73 FAQ
1.How can I place an order for 5KP70HE3/73 through Aetrix?
Please submit a Request for Quotation (RFQ) for 5KP70HE3/73 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 5KP70HE3/73 reliable?
The price and inventory of 5KP70HE3/73 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 5KP70HE3/73 is usually 5 days.
3.What payment methods are accepted for 5KP70HE3/73?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 5KP70HE3/73 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 5KP70HE3/73?
5KP70HE3/73 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 5KP70HE3/73 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 5KP70HE3/73?
For technical support, including 5KP70HE3/73 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 5KP70HE3/73 requirements.
6.How does Aetrix verify that 5KP70HE3/73 is sourced from the original manufacturer or authorized distributors?
All 5KP70HE3/73 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 5KP70HE3/73 meets industry standards.
7.What is the process for return or replacement of 5KP70HE3/73?
All 5KP70HE3/73 units undergo pre-shipment inspection (PSI). If there is an issue with 5KP70HE3/73, 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 5KP70HE3/73 part is unused and in its original packaging.
Return procedure for 5KP70HE3/73:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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