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Vishay General Semiconductor - Diodes Division 5KP51HE3/54
- Part No.:
- 5KP51HE3/54
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- P600, Axial
- Datasheet:
-
5KP51HE3/54.pdf
- Description:
- TVS DIODE 51VWM 91.1VC P600
- Quantity:
- Payment:
- Shipping:
Inventory:4,968
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Product details
Overview
5KP51HE3/54 from Vishay General Semiconductor is a unidirectional TransZORB® transient voltage suppressor (TVS) diode in P600 package, designed for high-energy surge protection with 5000 W peak pulse power (10/1000 μs), 51 V stand-off voltage (VWM), and 82.4 V clamping voltage (VC) at 60.7 A peak pulse current. It protects MOSFETs, ICs, and sensor signal lines in automotive power supplies and industrial switching systems.
For engineers reviewing the 5KP51HE3/54 datasheet, 5KP51HE3/54 pinout, 5KP51HE3/54 application, or 5KP51HE3/54 equivalent, key selection criteria include unidirectional polarity, AEC-Q101 qualification, 175 °C max junction temperature, low incremental surge resistance, and RoHS-compliant matte tin-plated leads meeting J-STD-002 solderability.
Technical Context
This TVS diode operates as a voltage-clamping overvoltage protection device, triggered when reverse voltage exceeds its 56.7–62.7 V breakdown range (VBR at 5 mA). Its glass-passivated P600 junction enables fast response (<1 ns) and stable clamping under repetitive 0.01% duty cycle surges.
Designed for placement across DC rails or signal lines, it absorbs inductive-switching transients and lightning-induced spikes without latch-up. The device sustains 600 A non-repetitive forward surge (8.3 ms half-sine) and dissipates up to 8.0 W on an infinite heatsink at 75 °C lead temperature.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 51.0 V - Maximum continuous reverse operating voltage before clamping begins |
| VBR (min/max) | 56.7 V / 62.7 V - Breakdown occurs within this range at 5 mA test current; defines turn-on threshold |
| VC @ IPPM | 82.4 V - Clamped voltage at 60.7 A peak pulse current; determines protected circuit's maximum transient exposure |
| PPPM | 5000 W - Peak pulse power handling with 10/1000 μs waveform; supports high-energy surge events |
| TJ max. | 175 °C - Maximum junction temperature; enables operation in under-hood automotive environments |
| Polarity | Unidirectional - Cathode-banded; blocks reverse voltage only; not suitable for AC or bidirectional protection |
| AEC-Q101 | Qualified - Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing |
Pinout & Package
Package: P600 molded epoxy case 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 terminal | Connected to lower-potential side (e.g., ground or return path) in unidirectional clamp configuration |
| Cathode | Reverse-blocking terminal | Connected to protected line (e.g., +12 V rail); color band identifies this end for correct PCB orientation |
Key Features
| Feature | Design Value |
|---|---|
| 5000 W peak pulse power | Withstands high-energy transients common in automotive load-dump and industrial motor drive scenarios |
| AEC-Q101 qualification | Meets automotive stress-test requirements for temperature cycling, high-temp reverse bias, and ESD robustness |
| Low incremental surge resistance | Minimizes voltage overshoot during fast-rising transients, improving clamping precision |
| 175 °C max junction temperature | Supports reliable operation in engine-control units and powertrain modules without derating |
| RoHS-compliant HE3 suffix | Indicates AEC-Q101 qualified grade with JESD 201 Class 2 whisker resistance for long-term solder joint integrity |
Applications
| Automotive Power Supply Protection | Industrial Motor Drive Control |
|---|---|
Use Scenario: Protecting 12 V/24 V battery-fed ECUs from ISO 7637-2 load-dump transients up to 120 V. IC Role / Device Role / Timing Role: Voltage-clamping TVS placed across input rail to shunt surge energy before reaching downstream regulators and microcontrollers. Use Value: Clamps to ≤82.4 V within nanoseconds, preventing damage to 5 V/3.3 V logic while surviving 5000 W pulses per AEC-Q101 test conditions. | Use Scenario: Safeguarding gate drivers and feedback sensors in variable-frequency drives exposed to inductive kickback. IC Role / Device Role / Timing Role: Unidirectional suppressor installed across DC bus or IGBT collector-emitter to absorb switching spikes. Use Value: Withstands 600 A 8.3 ms forward surge and maintains stable clamping even after repeated 0.01% duty cycle events. |
| Telecom Power Interface | Consumer Appliance Mainboard |
Use Scenario: Shielding PoE-powered Ethernet ports and base station DC inputs from lightning-induced surges. IC Role / Device Role / Timing Role: Primary-level TVS on 48 V input stage, coordinated with secondary MOVs and filtering. Use Value: 51 V VWM allows margin above nominal 48 V rail while 82.4 V VC stays below typical 100 V isolation ratings. | Use Scenario: Protecting microcontroller I/O and relay driver circuits in washing machines and HVAC controllers. IC Role / Device Role / Timing Role: Point-of-load TVS on 5 V/12 V supply rails feeding solenoid drivers and Hall-effect sensors. Use Value: AEC-Q101 qualification ensures reliability in thermally cycled environments; P600 package provides mechanical robustness during reflow and vibration. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ51AHE3/52 | 600 W peak pulse power (vs. 5000 W); SMC package; same 51 V VWM and unidirectional polarity | Lower energy handling limits use to sub-100 A surge environments; suited for board-level signal line protection | Select SMBJ51AHE3/52 where space constraints preclude P600 and surge energy is <10% of 5KP51HE3/54 capability |
| 1.5KE51A | 1500 W peak pulse power; DO-201 package; 51 V VWM; no AEC-Q101 qualification | Lacks automotive qualification and thermal robustness; limited to commercial-grade power supply outputs | Choose 1.5KE51A only for cost-sensitive, non-automotive applications with verified <300 A surge exposure |
Compared with SMBJ51AHE3/52 and 1.5KE51A, the 5KP51HE3/54 delivers tenfold higher surge energy absorption and automotive-grade reliability-critical for protecting safety-critical power electronics where failure risk must be minimized under harsh thermal and electrical stress.
Availability
5KP51HE3/54 is available at Aetrix Electronics and suitable for automotive ECUs, industrial motor drives, telecom power interfaces, and consumer appliance mainboards requiring stable component supply across extended production lifecycles.
Supply support for 5KP51HE3/54 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 designs and manufactures discrete semiconductors including diodes, rectifiers, and TVS devices, with emphasis on high-reliability, high-power, and automotive-qualified components.
The 5KP series was developed specifically for high-energy transient suppression in automotive and industrial power systems, targeting load-dump, inductive switching, and lightning surge events where standard TVS devices lack sufficient pulse power rating.
FAQ
What is the clamping voltage of the 5KP51HE3/54 under peak surge conditions?
The 5KP51HE3/54 clamps to a maximum of 82.4 V when subjected to its rated 60.7 A peak pulse current (IPPM) using a 10/1000 μs waveform. This value is measured per JEDEC standards and defines the upper voltage limit imposed on protected circuitry during transient events, ensuring downstream ICs and MOSFETs remain within safe operating ranges.
Is the 5KP51HE3/54 suitable for automotive applications?
Yes, the 5KP51HE3/54 is AEC-Q101 qualified and explicitly rated for automotive use. Its 175 °C maximum junction temperature, robust P600 package, and validation across temperature cycling, high-temperature reverse bias, and ESD tests confirm suitability for engine control units, body electronics, and powertrain modules where reliability under thermal and electrical stress is critical.
What does the "HE3" suffix indicate in 5KP51HE3/54?
The "HE3" suffix denotes that the 5KP51HE3/54 is the AEC-Q101 qualified version with RoHS compliance and JESD 201 Class 2 whisker resistance. It distinguishes this grade from the commercial "E3" variant and confirms enhanced process controls, extended reliability testing, and suitability for automotive and high-reliability industrial deployments.
How does the 5KP51HE3/54 differ from standard 1.5 kW TVS diodes like 1.5KE51A?
The 5KP51HE3/54 provides 5000 W peak pulse power-more than three times the 1500 W rating of 1.5KE51A-along with AEC-Q101 qualification, higher IFSM (600 A vs. 200 A), and superior thermal performance in the P600 package. These differences make the 5KP51HE3/54 appropriate for demanding automotive load-dump and industrial motor-drive protection where lower-rated devices would fail.
Can the 5KP51HE3/54 be used in bidirectional surge protection circuits?
No, the 5KP51HE3/54 is unidirectional only, as confirmed by its datasheet and cathode-band polarity marking. It conducts in forward bias and clamps in reverse bias but offers no protection against positive transients on the anode side. For bidirectional protection, a pair of 5KP51HE3/54 devices in series-opposing configuration-or a dedicated bidirectional TVS such as 5KP51CA-is required.
5KP51HE3/54 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- P600, Axial
- Series:
- TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 51V
- Voltage - Breakdown (Min):
- 56.1V
- Voltage - Clamping (Max) @ Ipp:
- 91.1V
- Current - Peak Pulse (10/1000µs):
- 54.9A
- 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
5KP51HE3/54 FAQ
1.How can I place an order for 5KP51HE3/54 through Aetrix?
Please submit a Request for Quotation (RFQ) for 5KP51HE3/54 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 5KP51HE3/54 reliable?
The price and inventory of 5KP51HE3/54 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 5KP51HE3/54 is usually 5 days.
3.What payment methods are accepted for 5KP51HE3/54?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 5KP51HE3/54 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 5KP51HE3/54?
5KP51HE3/54 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 5KP51HE3/54 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 5KP51HE3/54?
For technical support, including 5KP51HE3/54 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 5KP51HE3/54 requirements.
6.How does Aetrix verify that 5KP51HE3/54 is sourced from the original manufacturer or authorized distributors?
All 5KP51HE3/54 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 5KP51HE3/54 meets industry standards.
7.What is the process for return or replacement of 5KP51HE3/54?
All 5KP51HE3/54 units undergo pre-shipment inspection (PSI). If there is an issue with 5KP51HE3/54, 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 5KP51HE3/54 part is unused and in its original packaging.
Return procedure for 5KP51HE3/54:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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