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Vishay General Semiconductor - Diodes Division 5KP48A-E3/51
- Part No.:
- 5KP48A-E3/51
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- P600, Axial
- Datasheet:
-
5KP48A-E3/51.pdf
- Description:
- TVS DIODE 48VWM 77.4VC P600
- Quantity:
- Payment:
- Shipping:
Inventory:7,927
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Product details
Overview
5KP48A-E3/51 from Vishay General Semiconductor is a unidirectional TransZORB® transient voltage suppressor (TVS) diode designed for high-energy surge protection in DC power lines and signal paths. It features a 48 V standoff voltage (VWM), 53.3–58.9 V breakdown voltage (VBR at 5 mA), 77.4 V clamping voltage (VC) at 64.6 A peak pulse current, and 5000 W peak pulse power rating with 10/1000 μs waveform - deployed to safeguard MOSFETs, ICs, and sensor interfaces against inductive switching transients in automotive and industrial power supplies.
For engineers reviewing the 5KP48A-E3/51 datasheet, 5KP48A-E3/51 pinout, 5KP48A-E3/51 application, or 5KP48A-E3/51 equivalent, this device requires attention to unidirectional polarity (cathode band marked), P600 package thermal derating above 25 °C, junction temperature limits (−55 °C to +175 °C), and compliance with AEC-Q101 for automotive-grade reliability.
Technical Context
The 5KP48A-E3/51 operates as a silicon avalanche diode with glass-passivated P600 junction, optimized for fast response (<1 ns) and low incremental surge resistance to clamp transient overvoltages before downstream components are damaged. Its unidirectional configuration allows integration into DC-biased rails where reverse conduction must be blocked during normal operation.
It delivers 5000 W peak pulse power handling under JEDEC-standard 10/1000 μs waveform at 0.01% duty cycle, with clamping performance validated at 64.6 A IPPM and 77.4 V VC - enabling robust protection without crowbar circuitry in switching power supply outputs and motor drive control lines.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 48.0 V - Maximum continuous reverse operating voltage; defines safe DC bias limit before leakage exceeds 2 μA. |
| VBR (min/max) | 53.3 V / 58.9 V at 5 mA - Breakdown onset range; ensures reliable avalanche initiation within specified tolerance for consistent clamping. |
| VC @ IPPM | 77.4 V at 64.6 A - Clamped voltage during 10/1000 μs surge; determines maximum stress imposed on protected load. |
| PPPM | 5000 W - Peak pulse power capability; supports single-event surges up to 5 kW without failure under defined waveform. |
| TJ max | +175 °C - Maximum junction temperature; enables operation in under-hood automotive environments and high-ambient industrial enclosures. |
| Polarity | Unidirectional - Cathode-marked device; blocks reverse current during normal operation and conducts only during positive transients. |
| Package | P600 - Axial-leaded, molded epoxy case rated UL 94 V-0; provides mechanical robustness and thermal path for PCB-mount heat dissipation. |
Pinout & Package
P600 package: axial-leaded, cylindrical epoxy body with cathode band marking; leads are matte tin-plated, solderable per J-STD-002 and JESD 22-B102, qualified for 275 °C solder dip (10 s max).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal | Connected to lower-potential side of protected line; conducts surge current to ground when VAK exceeds VBR. |
| Cathode | Reverse-biased reference terminal | Marked by color band; connected to higher-potential rail (e.g., +48 V bus); defines polarity and clamping reference point. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive under-hood applications including engine control units and body electronics requiring high-reliability surge immunity. |
| 5000 W peak pulse power (10/1000 μs) | Enables single-point protection of 48 V systems against ISO 7637-2 Pulse 1/2a/5a transients without cascaded TVS stages. |
| Low clamping ratio (VC/VBR ≈ 1.33) | Minimizes overvoltage margin between clamping and breakdown, reducing stress on downstream MOSFET gate oxides and IC ESD structures. |
| UL 94 V-0 molded epoxy case | Ensures flame-retardant mechanical integrity in enclosed power modules and industrial control cabinets exposed to arc faults. |
| Junction temperature range −55 °C to +175 °C | Supports deployment in wide-temperature environments such as telecom rectifiers, railway power converters, and solar charge controllers. |
Applications
| Automotive Power Distribution | Industrial DC Motor Drives |
|---|---|
Use Scenario: Protection of 48 V battery-fed ECUs and ADAS sensors against load dump and alternator ripple. IC Role / Device Role / Timing Role: Primary overvoltage clamp on main power rail upstream of DC-DC converters and microcontrollers. Use Value: Withstands 5000 W surges while limiting clamped voltage to 77.4 V - below absolute maximum ratings of 100 V-rated automotive ICs and gate drivers. |
Use Scenario: Input-side surge suppression for 48 V BLDC motor controllers subjected to inductive kickback during PWM commutation. IC Role / Device Role / Timing Role: Fast-acting shunt protector placed across H-bridge supply terminals to divert energy before IGBT/MOSFET avalanche failure. Use Value: Sub-1 ns response time and 64.6 A peak current capacity prevent destructive voltage overshoot during rapid current interruption in motor phase windings. |
| Telecom Rectifier Outputs | Renewable Energy Charge Controllers |
Use Scenario: Output rail protection in -48 V telecom rectifiers exposed to lightning-induced surges on backup battery feeds. IC Role / Device Role / Timing Role: Final-stage TVS on secondary side of isolation transformer, clamping transients before distribution to shelf-level cards. Use Value: 77.4 V clamping voltage ensures compatibility with −48 V system tolerances (±20%) and prevents latch-up in PMBus-configurable power management ICs. |
Use Scenario: PV array input protection in 48 V off-grid charge controllers facing voltage spikes from lightning or grid-switching events. IC Role / Device Role / Timing Role: Front-end transient suppressor mounted directly at MC4 connector entry point, before MPPT controller input stage. Use Value: P600 package's 2.776 g mass and UL 94 V-0 housing withstand outdoor environmental cycling while maintaining 5000 W surge rating over full −40 °C to +85 °C operating range. |
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 SMAJ48A | Lower peak pulse power (400 W vs. 5000 W); SMA package (surface-mount, 1.6 W PD); 75.4 V clamping at 27.5 A. | Suitable for low-energy signal-line protection; not rated for AEC-Q101 or high-current power rail clamping. | Select 5KP48A-E3/51 when protecting 48 V DC power buses with >1 kA surge exposure; choose SMAJ48A only for board-level signal conditioning with space constraints. |
| ON Semiconductor 1.5KE48A | Same 48 V VWM, but lower PPPM (1500 W); DO-201 package; 77 V clamping at 21.7 A; no AEC-Q101 qualification. | Acceptable for non-automotive industrial use where surge energy is limited to <1.5 kW; lacks automotive reliability validation. | Prefer 5KP48A-E3/51 for automotive or high-reliability 48 V systems; use 1.5KE48A only in cost-sensitive, non-automotive applications with verified lower surge threat levels. |
Compared with SMAJ48A and 1.5KE48A, the 5KP48A-E3/51 delivers tenfold higher surge power handling, AEC-Q101 qualification, and P600 thermal robustness - making it the sole choice for 48 V power rail protection in automotive, telecom, and renewable energy systems demanding field-proven reliability under extreme transients.
Availability
5KP48A-E3/51 is available at Aetrix Electronics and suitable for automotive power distribution, industrial motor drives, telecom rectifier outputs, and renewable energy charge controllers requiring stable component supply across extended product lifecycles.
Supply support for 5KP48A-E3/51 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 high-reliability diodes, MOSFETs, optoelectronics, and passive components for automotive, industrial, and computing markets.
The 5KP series was engineered specifically for high-energy transient suppression in DC power systems - targeting replacement of crowbar circuits in switching power supplies and enabling fuse/breaker coordination without device destruction.
FAQ
What is the clamping voltage of the 5KP48A-E3/51 under maximum surge conditions?
The 5KP48A-E3/51 has a maximum clamping voltage (VC) of 77.4 V at 64.6 A peak pulse current (IPPM) with a 10/1000 μs waveform. This value is measured per JEDEC standards and defines the upper voltage limit imposed on protected circuitry during worst-case transient events - critical for ensuring downstream ICs remain within their absolute maximum ratings.
Is the 5KP48A-E3/51 suitable for automotive applications?
Yes, the 5KP48A-E3/51 is AEC-Q101 qualified and explicitly rated for automotive under-hood environments. Its −55 °C to +175 °C junction temperature range, P600 package mechanical robustness, and 5000 W surge capability make it appropriate for protecting engine control units, ADAS domain controllers, and 48 V mild-hybrid power distribution networks.
How does the 5KP48A-E3/51 differ from the 1.5KE48A in practical design use?
The 5KP48A-E3/51 offers 5000 W peak pulse power versus 1500 W for the 1.5KE48A, uses a larger P600 package for superior thermal dissipation, and carries AEC-Q101 qualification - whereas the 1.5KE48A is DO-201 packaged and intended for general-purpose industrial use without automotive reliability validation.
What does the "E3/51" suffix indicate in the 5KP48A-E3/51 part number?
The "E3" denotes RoHS-compliant, commercial-grade matte tin-plated leads meeting JESD 201 Class 1A whisker resistance; "/51" specifies the preferred packaging code - in this case, 500 pieces per 13-inch paper tape and reel - per Vishay's ordering nomenclature in document 88308.
Can the 5KP48A-E3/51 be used in bidirectional configurations?
No, the 5KP48A-E3/51 is unidirectional only, with cathode band marking indicating polarity. For bidirectional transient suppression, Vishay offers separate dual-diode configurations (e.g., 5KP48CA); using two 5KP48A-E3/51 devices in series opposition is not recommended due to mismatched VBR tolerances and undefined clamping symmetry.
5KP48A-E3/51 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- P600, Axial
- Series:
- TransZorb®
- Packaging:
- Bulk
- Product Status:
- Obsolete
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 48V
- Voltage - Breakdown (Min):
- 53.3V
- Voltage - Clamping (Max) @ Ipp:
- 77.4V
- Current - Peak Pulse (10/1000µs):
- 64.6A
- 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
5KP48A-E3/51 FAQ
1.How can I place an order for 5KP48A-E3/51 through Aetrix?
Please submit a Request for Quotation (RFQ) for 5KP48A-E3/51 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 5KP48A-E3/51 reliable?
The price and inventory of 5KP48A-E3/51 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 5KP48A-E3/51 is usually 5 days.
3.What payment methods are accepted for 5KP48A-E3/51?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 5KP48A-E3/51 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 5KP48A-E3/51?
5KP48A-E3/51 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 5KP48A-E3/51 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 5KP48A-E3/51?
For technical support, including 5KP48A-E3/51 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 5KP48A-E3/51 requirements.
6.How does Aetrix verify that 5KP48A-E3/51 is sourced from the original manufacturer or authorized distributors?
All 5KP48A-E3/51 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 5KP48A-E3/51 meets industry standards.
7.What is the process for return or replacement of 5KP48A-E3/51?
All 5KP48A-E3/51 units undergo pre-shipment inspection (PSI). If there is an issue with 5KP48A-E3/51, 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 5KP48A-E3/51 part is unused and in its original packaging.
Return procedure for 5KP48A-E3/51:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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