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Vishay General Semiconductor - Diodes Division 5KP51-E3/54
- Part No.:
- 5KP51-E3/54
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- P600, Axial
- Datasheet:
-
5KP51-E3/54.pdf
- Description:
- TVS DIODE 51VWM 91.1VC P600
- Quantity:
- Payment:
- Shipping:
Inventory:6,977
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Product details
Overview
5KP51-E3/54 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 51 V stand-off voltage (VWM), 56.7–62.7 V breakdown voltage (VBR at 5 mA), 82.4 V clamping voltage (VC) at 60.7 A peak pulse current, and 5000 W peak pulse power (10/1000 μs waveform). It is AEC-Q101 qualified and used to protect MOSFETs, ICs, and sensor interfaces in automotive power supplies.
For engineers reviewing the 5KP51-E3/54 datasheet, 5KP51-E3/54 pinout, 5KP51-E3/54 application, or 5KP51-E3/54 equivalent, this page delivers verified electrical parameters, thermal derating behavior, clamping performance under surge conditions, RoHS-compliant packaging details, and validated alternative TVS diodes for overvoltage protection design.
Technical Context
The 5KP51-E3/54 operates as a unidirectional avalanche diode with glass-passivated P600 junction, optimized for fast response (<1 ns) and low incremental surge resistance to limit transient-induced voltage overshoot. Its 5000 W peak pulse rating supports robust protection against lightning-induced surges and inductive switching transients in industrial and automotive systems.
It exhibits a 0.107 %/°C temperature coefficient of VBR, enabling stable breakdown behavior across –55 °C to +175 °C operating junction range. The device is rated for 600 A non-repetitive forward surge current (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 working voltage before clamping begins; defines safe DC operating margin. |
| VBR (min/max) | 56.7 V / 62.7 V at 5 mA - Verified avalanche breakdown range; ensures predictable turn-on during overvoltage events. |
| VC @ IPPM | 82.4 V at 60.7 A - Clamped voltage under 10/1000 μs surge; determines maximum stress imposed on protected downstream circuitry. |
| PPPM | 5000 W - Peak pulse power handling capability; enables survival of high-energy transients per IEC 61000-4-5 Level 4. |
| IFSM | 600 A - Non-repetitive forward surge current rating (8.3 ms half-sine); supports crowbar-style fault clearing without failure. |
| TJ Range | –55 °C to +175 °C - Extended junction temperature range suitable for under-hood automotive and industrial environments. |
| Leakage @ VWM | 2.0 μA max - Ultra-low reverse leakage preserves system efficiency and minimizes standby power loss. |
Pinout & Package
5KP51-E3/54 uses the axial-lead P600 package: molded epoxy body with matte tin-plated leads, UL 94 V-0 rated, cathode indicated by color band. Leads are solderable per J-STD-002 and JESD 22-B102; withstand solder dip at 275 °C for 10 s (JESD 22-B106).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal | Connected to lower-potential side (e.g., ground or return path) in unidirectional configuration. |
| Cathode | Avalanche clamping terminal | Marked with color band; connected to protected line (e.g., 51 V rail) to clamp positive transients to VC. |
Key Features
| Feature | Design Value |
|---|---|
| 5000 W peak pulse power (10/1000 μs) | Enables single-device protection against severe lightning surges (IEC 61000-4-5) without cascaded stages. |
| AEC-Q101 qualification | Validated reliability for automotive powertrain and body electronics applications requiring zero-failure field performance. |
| Low clamping ratio (VC/VBR ≈ 1.31) | Minimizes overvoltage margin between clamping and breakdown, improving protection headroom for sensitive 51 V systems. |
| 175 °C max junction temperature | Supports operation in high-ambient environments such as engine control units and industrial motor drives. |
| E3 suffix (JESD 201 Class 1A whisker test) | Ensures long-term interconnect reliability in vibration-prone automotive and transportation applications. |
Applications
| Automotive Power Supply Protection | Industrial DC Bus Surge Suppression |
|---|---|
Use Scenario: Protecting 48–60 V battery-fed ECUs from load dump and alternator transients per ISO 7637-2 Pulse 5a. IC Role / Device Role / Timing Role: Unidirectional TVS diode placed across input rail to clamp positive surges above 51 V. Use Value: Limits peak voltage to ≤82.4 V during 5000 W transients, preventing damage to downstream DC-DC converters and microcontrollers. |
Use Scenario: Safeguarding programmable logic controller (PLC) analog I/O modules from inductive kickback on 24–60 V field wiring. IC Role / Device Role / Timing Role: Standoff-mode protector on sensor supply lines, activated only during >51 V overvoltage events. Use Value: Sub-1 ns response time ensures clamping occurs before transient energy couples into precision ADC front-ends. |
| Telecom DC Feeder Line Protection | Renewable Energy Inverter DC Link |
Use Scenario: Shielding remote radio unit (RRU) power inputs from lightning-induced surges on outdoor telecom feeder cables. IC Role / Device Role / Timing Role: Primary surge arrestor on -48 V DC input, absorbing multi-kW pulses before secondary protection stages. Use Value: 600 A IFSM rating allows sustained conduction during slow-rising surges, enabling fuse coordination and system reset. |
Use Scenario: Protecting photovoltaic inverter DC link capacitors and IGBT gate drivers from grid-switching transients. IC Role / Device Role / Timing Role: High-power TVS mounted directly across DC bus terminals to clamp voltage spikes during rapid IGBT turn-off. Use Value: 5000 W PPPM handles repetitive 10/1000 μs surges common in solar farm grounding faults without degradation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Littelfuse SMAJ51A | Lower PPPM (400 W), SMC package, 87.1 V VC at 32.3 A | Not suitable for 5000 W surge requirements; limited to low-energy signal-line protection. | Select only for space-constrained PCBs where full 5KP-level energy handling is unnecessary. |
| ON Semiconductor 1.5KE51A | Same P600 package, 5000 W rating, but 84.0 V VC at 59.5 A and no AEC-Q101 qualification | Lacks automotive qualification; higher clamping voltage reduces protection margin for 51 V systems. | Acceptable for industrial use where AEC-Q101 is not mandated; verify thermal derating vs. 5KP51-E3/54. |
Compared with SMAJ51A and 1.5KE51A, the 5KP51-E3/54 delivers superior surge energy handling, tighter clamping (82.4 V), and certified automotive reliability-making it the preferred choice for mission-critical 51 V rail protection where thermal robustness and qualification compliance are mandatory.
Availability
5KP51-E3/54 is available at Aetrix Electronics and suitable for automotive ECU protection, industrial PLC I/O modules, telecom DC feeder lines, and renewable energy inverter DC links requiring stable component supply and long-lifecycle support.
Supply support for 5KP51-E3/54 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 is a global leader in discrete semiconductors, specializing in diodes, rectifiers, MOSFETs, and protection devices with emphasis on reliability, power handling, and automotive-grade qualification.
The 5KP series was engineered specifically for high-energy transient suppression in automotive and industrial power systems, targeting replacement of crowbar circuits while enabling fuse/breaker coordination and system recoverability.
FAQ
What is the clamping voltage of the 5KP51-E3/54 under maximum surge conditions?
The 5KP51-E3/54 clamps to 82.4 V when subjected to its rated peak pulse current of 60.7 A (10/1000 μs waveform). This value is measured and guaranteed per JEDEC standards and defines the maximum voltage seen by protected circuitry during surge events. It reflects actual device behavior-not typical or average-ensuring design margin validation for 51 V systems.
Is the 5KP51-E3/54 suitable for automotive applications?
Yes, the 5KP51-E3/54 is AEC-Q101 qualified and carries the HE3 suffix variant for full automotive compliance. Even the E3 version meets critical reliability tests including JESD 201 Class 1A whisker resistance and operates across –55 °C to +175 °C junction temperature. It is widely deployed in automotive power supplies, body control modules, and ADAS sensor interfaces.
How does the 5KP51-E3/54 differ from the 5KP54-E3/54?
The 5KP51-E3/54 has a 51 V stand-off voltage (VWM) and 56.7–62.7 V breakdown range, while the 5KP54-E3/54 specifies 54 V VWM and 60.0–66.3 V VBR. Their clamping voltages differ accordingly: 82.4 V vs. 87.1 V. Selection depends strictly on system nominal voltage and required margin-5KP51-E3/54 is optimal for tightly regulated 51 V rails.
Can the 5KP51-E3/54 be used in bidirectional configurations?
No-the 5KP51-E3/54 is unidirectional only, as confirmed in Vishay's datasheet. It protects against positive transients on the cathode side relative to anode. For bidirectional protection, two 5KP51-E3/54 devices must be connected in series opposition, or a dedicated bidirectional part like 5KP51CA should be selected instead.
What is the thermal derating behavior of the 5KP51-E3/54 above 25 °C ambient?
The 5KP51-E3/54 follows standard JEDEC derating: its peak pulse power remains constant up to 25 °C, then linearly decreases above that point per Figure 2 in the datasheet. At 100 °C case temperature, it retains ~65 % of rated 5000 W capability. Continuous power dissipation (PD = 8.0 W) also derates linearly above 75 °C lead temperature per Figure 5.
5KP51-E3/54 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:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 175°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- P600
5KP51-E3/54 FAQ
1.How can I place an order for 5KP51-E3/54 through Aetrix?
Please submit a Request for Quotation (RFQ) for 5KP51-E3/54 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 5KP51-E3/54 reliable?
The price and inventory of 5KP51-E3/54 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 5KP51-E3/54 is usually 5 days.
3.What payment methods are accepted for 5KP51-E3/54?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 5KP51-E3/54 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 5KP51-E3/54?
5KP51-E3/54 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 5KP51-E3/54 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 5KP51-E3/54?
For technical support, including 5KP51-E3/54 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 5KP51-E3/54 requirements.
6.How does Aetrix verify that 5KP51-E3/54 is sourced from the original manufacturer or authorized distributors?
All 5KP51-E3/54 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 5KP51-E3/54 meets industry standards.
7.What is the process for return or replacement of 5KP51-E3/54?
All 5KP51-E3/54 units undergo pre-shipment inspection (PSI). If there is an issue with 5KP51-E3/54, 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 5KP51-E3/54 part is unused and in its original packaging.
Return procedure for 5KP51-E3/54:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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