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Vishay General Semiconductor - Diodes Division 5KP51A-E3/54
- Part No.:
- 5KP51A-E3/54
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- P600, Axial
- Datasheet:
-
5KP51A-E3/54.pdf
- Description:
- TVS DIODE 51VWM 82.4VC P600
- Quantity:
- Payment:
- Shipping:
Inventory:151
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Product details
Overview
5KP51A-E3/54 from Vishay General Semiconductor is a unidirectional transient voltage suppressor (TVS) diode in P600 package, designed for high-energy surge protection on 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 maximum clamping voltage at 60.7 A peak pulse current, and 5000 W peak pulse power rating with 10/1000 µs waveform - used to protect MOSFETs, ICs, and sensor interfaces in automotive and industrial power supplies.
For engineers reviewing the 5KP51A-E3/54 datasheet, 5KP51A-E3/54 pinout, 5KP51A-E3/54 application, or 5KP51A-E3/54 equivalent, key selection criteria include clamping voltage margin vs. protected device VDS/VCC, peak pulse current capability under system-level lightning/surge standards (IEC 61000-4-5), thermal derating above 25 °C, and AEC-Q101 qualification status for automotive deployment.
Technical Context
This TVS operates as a voltage-clamped crowbar element during transients: it remains high-impedance below 51 V, then avalanches sharply at 56.7–62.7 V to limit downstream voltage to ≤82.4 V at 60.7 A. Its P600 glass-passivated junction enables low incremental surge resistance and sub-nanosecond response time.
Rated for 5000 W peak pulse power (10/1000 µs), it sustains 500 A non-repetitive forward surge current (8.3 ms half-sine) and dissipates 8.0 W continuously on an infinite heatsink at 75 °C lead temperature. Junction temperature range is –55 °C to +175 °C, with AEC-Q101 qualification confirmed for automotive-grade reliability.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 51.0 V - Maximum continuous reverse voltage before leakage exceeds 2 µA; sets operating margin below clamping threshold. |
| VBR (Breakdown Voltage) | 56.7–62.7 V at 5 mA - Confirmed avalanche onset range; ensures reliable turn-on before protected circuit damage. |
| VC (Clamping Voltage) | 82.4 V at IPPM = 60.7 A - Peak voltage seen by downstream components during worst-case 10/1000 µs surge. |
| PPPM (Peak Pulse Power) | 5000 W - Sustains IEC 61000-4-5 Level 4 (4 kV/2 Ω) surges without failure when properly mounted. |
| IFSM (Surge Current) | 500 A (8.3 ms half-sine) - Withstands inrush or fault currents without bond-wire fusing. |
| TJ max. | +175 °C - Enables operation in under-hood automotive environments and high-ambient industrial enclosures. |
| Polarity | Unidirectional - Cathode marked by color band; blocks reverse conduction, conducts only during positive overvoltage events. |
Pinout & Package
Package: P600 molded epoxy case with glass-passivated junction; matte tin-plated leads compliant with J-STD-002 and JESD 22-B102; RoHS-compliant (E3 suffix); UL 94 V-0 rated molding compound.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry during forward surge | Connected to ground or low-side return path; must handle 500 A surge without trace melting. |
| Cathode | Protected line connection | Marked by color band; connects to rail being protected (e.g., 48 V supply); clamps to ≤82.4 V during transients. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive powertrain and body electronics per stress test requirements (HTOL, TC, HTRB). |
| 5000 W peak pulse power (10/1000 µs) | Meets IEC 61000-4-5 surge immunity up to 4 kV (2 Ω source impedance) without degradation. |
| Low clamping ratio (VC/VBR ≈ 1.31) | Minimizes overvoltage stress on downstream MOSFETs and controllers during fast transients. |
| P600 package with 9.5 mm body length | Enables high thermal mass and PCB copper pour integration for >8 W steady-state dissipation at TL = 75 °C. |
| 0.078 %/°C VBR tempco | Ensures stable breakdown threshold across –55 °C to +175 °C ambient, critical for engine bay applications. |
Applications
| Automotive Power Supply Protection | Industrial DC Bus Clamping |
|---|---|
|
Use Scenario: Protecting 48 V battery-fed ECUs against load dump (ISO 7637-2 Pulse 5a) and alternator transients. IC Role / Device Role / Timing Role: Unidirectional TVS placed between battery rail and input filter capacitor to clamp spikes to ≤82.4 V. Use Value: Prevents gate oxide rupture in 60 V-rated MOSFETs and overvoltage shutdown in PMICs during 120 V/100 ms load dump events. |
Use Scenario: Safeguarding 24–60 V industrial PLC I/O modules from inductive kickback on relay/solenoid outputs. IC Role / Device Role / Timing Role: Mounted across output terminals to absorb energy from L·di/dt spikes before reaching driver ICs. Use Value: Eliminates need for snubber RC networks while maintaining <100 ns response to 1 kV/µs transients. |
| Telecom DC Feeder Protection | Renewable Energy Charge Controller Input |
|
Use Scenario: Shielding PoE-powered equipment front-ends from lightning-induced surges on 48 V DC feeder lines. IC Role / Device Role / Timing Role: First-stage clamping device upstream of DC-DC converter, sized for IEC 61000-4-5 Combination Wave (1.2/50 µs + 8/20 µs). Use Value: Limits voltage to <85 V during 4 kV surge tests, preserving isolation barrier integrity and secondary-side regulation. |
Use Scenario: Protecting solar charge controller inputs from lightning surges on PV string wiring (up to 1000 V DC systems). IC Role / Device Role / Timing Role: Parallel-connected TVS on MPPT input stage to shunt surge current away from buck converter MOSFETs. Use Value: Handles 60.7 A peak pulse without degradation, enabling compliance with UL 1741 SA surge testing requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ51A | Lower PPPM (600 W), smaller SMB package, same VWM/VBR range but higher VC (93.6 V at 6.4 A). | Targeted at board-level signal-line protection; insufficient for 4 kV IEC 61000-4-5 mains-side surges. | Select 5KP51A-E3/54 when peak pulse power >1 kW and clamping voltage <85 V are required for primary power rail protection. |
| 1.5KE51A | Same P600 package and 5000 W rating, but legacy DO-201AE outline; slightly higher VC (84.5 V at 59.2 A) and no AEC-Q101 qualification. | Used in cost-sensitive industrial power supplies where automotive qualification is not mandated. | Choose 5KP51A-E3/54 for AEC-Q101 compliance and tighter clamping (82.4 V vs. 84.5 V), especially in safety-critical vehicle subsystems. |
Compared with SMBJ51A and 1.5KE51A, the 5KP51A-E3/54 delivers superior surge handling (5000 W), lower clamping voltage, and certified automotive reliability - making it the preferred choice for primary-side protection in harsh-environment 48 V systems.
Availability
5KP51A-E3/54 is available at Aetrix Electronics and suitable for automotive ECU protection, industrial DC bus clamping, and telecom DC feeder surge suppression requiring stable component supply, full traceability, and long-term lifecycle support.
Supply support for 5KP51A-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 high-reliability, high-power, and automotive-qualified solutions.
The 5KP series was engineered specifically for high-energy transient suppression in switching power supplies and automotive electrical systems, delivering robust 5000 W surge capability in the standardized P600 package.
FAQ
What is the clamping voltage of the 5KP51A-E3/54 under maximum rated surge current?
The 5KP51A-E3/54 has a maximum clamping voltage (VC) of 82.4 V when subjected to its peak pulse current (IPPM) of 60.7 A using the standard 10/1000 µs waveform. This value is measured per JEDEC test conditions and defines the upper voltage limit imposed on protected circuits during worst-case transient events.
Is the 5KP51A-E3/54 qualified for automotive applications?
Yes, the 5KP51A-E3/54 is AEC-Q101 qualified, as confirmed in the Vishay datasheet (Document Number: 88308, Revision: 16-Mar-2023). This qualification covers stress tests including high-temperature operating life, temperature cycling, and highly accelerated stress testing - validating its use in automotive powertrain, body control, and ADAS modules.
What does the "E3/54" suffix mean in 5KP51A-E3/54?
The "E3" suffix indicates RoHS-compliant, commercial-grade construction with JESD 201 Class 1A whisker resistance. The "/54" denotes the preferred packaging code: 13-inch paper tape and reel, with a base quantity of 800 units per reel, as specified in Vishay's ordering information table.
How does the 5KP51A-E3/54 differ from the 1.5KE51A in practical design?
The 5KP51A-E3/54 offers identical P600 packaging and 5000 W rating but features tighter clamping (82.4 V vs. 84.5 V), lower temperature coefficient (0.107 %/°C vs. ~0.110 %/°C), and formal AEC-Q101 qualification - whereas 1.5KE51A is legacy-qualified and lacks automotive validation documentation.
Can the 5KP51A-E3/54 be used in bidirectional configurations?
No, the 5KP51A-E3/54 is unidirectional only, with cathode marked by a color band. For bidirectional surge protection, Vishay offers separate dual-diode configurations (e.g., 5KP51CA); using two unidirectional devices back-to-back is not recommended due to mismatched VBR and thermal imbalance risks.
5KP51A-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:
- Active
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 51V
- Voltage - Breakdown (Min):
- 56.7V
- Voltage - Clamping (Max) @ Ipp:
- 82.4V
- Current - Peak Pulse (10/1000µs):
- 60.7A
- 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
5KP51A-E3/54 FAQ
1.How can I place an order for 5KP51A-E3/54 through Aetrix?
Please submit a Request for Quotation (RFQ) for 5KP51A-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 5KP51A-E3/54 reliable?
The price and inventory of 5KP51A-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 5KP51A-E3/54 is usually 5 days.
3.What payment methods are accepted for 5KP51A-E3/54?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 5KP51A-E3/54 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 5KP51A-E3/54?
5KP51A-E3/54 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 5KP51A-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 5KP51A-E3/54?
For technical support, including 5KP51A-E3/54 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 5KP51A-E3/54 requirements.
6.How does Aetrix verify that 5KP51A-E3/54 is sourced from the original manufacturer or authorized distributors?
All 5KP51A-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 5KP51A-E3/54 meets industry standards.
7.What is the process for return or replacement of 5KP51A-E3/54?
All 5KP51A-E3/54 units undergo pre-shipment inspection (PSI). If there is an issue with 5KP51A-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 5KP51A-E3/54 part is unused and in its original packaging.
Return procedure for 5KP51A-E3/54:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
5KP51A-E3/54 Tags
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