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Vishay General Semiconductor - Diodes Division 5KP28A-E3/54
- Part No.:
- 5KP28A-E3/54
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- P600, Axial
- Datasheet:
-
5KP28A-E3/54.pdf
- Description:
- TVS DIODE 28VWM 45.4VC P600
- Quantity:
- Payment:
- Shipping:
Inventory:1,686
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Product details
Overview
5KP28A-E3/54 from Vishay General Semiconductor is a unidirectional TransZORB® transient voltage suppressor (TVS) diode in P600 package, designed for primary overvoltage protection at power supply outputs and DC bus lines. It features 28.0 V stand-off voltage (VWM), 31.1–34.4 V breakdown voltage (VBR) at 5.0 mA, 5000 W peak pulse power (10/1000 μs), 110 A peak pulse current (IPPM), and clamps to ≤45.4 V at rated surge - used in automotive power modules and industrial motor drives.
For engineers reviewing the 5KP28A-E3/54 datasheet, 5KP28A-E3/54 pinout, 5KP28A-E3/54 application, or 5KP28A-E3/54 equivalent, this page delivers verified electrical parameters, AEC-Q101 qualification status, P600 mechanical dimensions, clamping performance under 10/1000 μs transients, and direct alternatives for high-energy surge protection design.
Technical Context
The 5KP28A-E3/54 operates as a silicon avalanche diode with glass-passivated P600 junction, optimized for non-repetitive surge suppression on DC power rails. Its unidirectional polarity enables asymmetric clamping - forward conduction during positive overvoltage, reverse blocking below VWM.
It sustains 5000 W peak pulse power per JEDEC-standard 10/1000 μs waveform at TA = 25 °C, with thermal derating above 25 °C per Fig. 2 and maximum junction temperature of 175 °C. The device meets JESD 22-B106 solderability (275 °C, 10 s) and JESD 201 Class 1A whisker resistance.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 28.0 V - Maximum continuous reverse operating voltage before significant leakage; sets minimum system DC rail margin. |
| VBR (min/max) | 31.1 V / 34.4 V at 5.0 mA - Confirmed avalanche onset range; ensures predictable turn-on during transients. |
| IPPM | 110 A - Peak surge current capability under 10/1000 μs waveform; determines survivability against lightning-induced surges. |
| VC | ≤45.4 V - Clamped voltage at IPPM; defines maximum stress imposed on downstream ICs or MOSFETs. |
| PPPM | 5000 W - Peak pulse power rating; enables protection of 24 V/48 V industrial power supplies without crowbar circuits. |
| TJmax | +175 °C - Maximum junction temperature; supports operation in engine bay or enclosed control cabinets. |
| AEC-Q101 | Qualified - Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing. |
Pinout & Package
Package: P600 molded epoxy case with matte tin-plated leads; cathode indicated by color band; UL 94 V-0 compliant; 9.5 mm body length, 8.6–9.1 mm width, 25.4 mm minimum tape reel diameter.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry point during overvoltage | Connected to protected circuit's ground or low-side return path; conducts when transient exceeds VBR. |
| Cathode | Reverse-biased terminal during normal operation | Connected to protected line (e.g., +24 V rail); blocks current until VWM exceeded, then avalanches to clamp. |
Key Features
| Feature | Design Value |
|---|---|
| 5000 W peak pulse power (10/1000 μs) | Enables single-device protection of 48 V telecom rectifiers and EV auxiliary power units without parallel stacking. |
| AEC-Q101 qualification | Validates robustness for automotive powertrain and ADAS ECUs exposed to load dump and ISO 7637-2 pulses. |
| Low incremental surge resistance | Minimizes voltage overshoot during fast-rising transients (<100 ns), improving protection margin for sensitive gate drivers. |
| 175 °C max junction temperature | Permits placement near heat-generating components (e.g., MOSFETs, inductors) without thermal derating penalties. |
| Color-band cathode marking | Ensures unambiguous polarity identification during manual assembly and automated optical inspection (AOI). |
Applications
| Automotive Load Dump Protection | Industrial DC Power Rail Clamping |
|---|---|
|
Use Scenario: Suppresses 120 V/100 ms load dump transients in 12 V vehicle electrical systems. IC Role / Device Role / Timing Role: Primary clamping element placed across battery input of body control module (BCM) or infotainment head unit. Use Value: Limits voltage seen by downstream LDOs and microcontrollers to ≤45.4 V, preventing latch-up or permanent damage. |
Use Scenario: Protects 24 V PLC I/O modules from inductive kickback generated by solenoid valve switching. IC Role / Device Role / Timing Role: Unidirectional TVS connected between field supply and common return, activated within <1 ns of overvoltage onset. Use Value: Absorbs 5000 W surge energy without degradation, eliminating need for sacrificial fuses or resettable breakers. |
| Telecom Rectifier Output Protection | Motor Drive DC Bus Snubbing |
|
Use Scenario: Guards output of -48 V telecom rectifiers against lightning-induced surges entering via copper lines. IC Role / Device Role / Timing Role: Mounted directly at rectifier output terminals to minimize lead inductance and preserve clamping speed. Use Value: Clamps 10/1000 μs surges to ≤45.4 V while maintaining <2.0 μA leakage at -48 V, ensuring low standby loss. |
Use Scenario: Mitigates voltage spikes caused by IGBT turn-off in 3-phase inverter DC links. IC Role / Device Role / Timing Role: Parallel-connected across DC bus capacitors to absorb regenerative energy during rapid deceleration. Use Value: Withstands repetitive 110 A surges without parameter drift, extending capacitor lifetime and reducing EMI filter stress. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ28A | Lower PPPM (600 W), smaller SMB package, same VWM/VBR range | Suitable for board-level signal-line protection; insufficient for 5000 W load dump or DC bus events | Select 5KP28A-E3/54 when surge energy exceeds 100 mJ or peak current >30 A. |
| 1.5KE27A | Same P600 package but lower PPPM (1500 W), higher VC (45.7 V), no AEC-Q101 qualification | Limited to commercial-grade power supplies; not validated for automotive thermal cycling or humidity exposure | Choose 5KP28A-E3/54 where AEC-Q101 compliance or 5000 W capability is mandatory. |
Compared with SMBJ28A and 1.5KE27A, the 5KP28A-E3/54 delivers 3.3× higher peak pulse power and automotive-grade reliability - making it the only option among the three qualified for under-hood automotive power modules and industrial 48 V DC distribution systems.
Availability
5KP28A-E3/54 is available at Aetrix Electronics and suitable for automotive electronics, industrial motor controls, and telecom infrastructure requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for 5KP28A-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, and protection devices with emphasis on high-reliability and high-power applications.
The 5KP series was engineered specifically for high-energy transient suppression in automotive, industrial, and telecom power systems - delivering robust clamping performance without crowbar circuit complexity.
FAQ
What is the clamping voltage of the 5KP28A-E3/54 under maximum rated surge current?
The 5KP28A-E3/54 clamps to a maximum of 45.4 V when subjected to its rated 110 A peak pulse current (IPPM) under the standard 10/1000 μs waveform. This value is measured per JEDEC test conditions and defines the upper voltage limit imposed on protected circuitry during surge events. The 5KP28A-E3/54 maintains this clamping performance across its full operating temperature range and after repeated surges, provided thermal limits are respected.
Is the 5KP28A-E3/54 suitable for automotive applications?
Yes, the 5KP28A-E3/54 is AEC-Q101 qualified, confirming its suitability for automotive applications including engine control units, body electronics, and ADAS modules. It withstands rigorous stress tests such as temperature cycling, highly accelerated life testing (HALT), and ESD per ISO 10605. The 5KP28A-E3/54 is specifically designed to handle load dump transients defined in ISO 7637-2, making it appropriate for 12 V and 24 V vehicle electrical systems.
What does the "E3/54" suffix indicate in 5KP28A-E3/54?
The "E3" suffix denotes RoHS-compliant, commercial-grade construction with JESD 201 Class 1A whisker resistance, while "/54" specifies the preferred packaging code: 13-inch paper tape and reel containing 800 units. This ordering format aligns with Vishay's standardized part numbering for P600 TVS diodes and ensures compatibility with automated SMT placement equipment. The 5KP28A-E3/54 is distinct from AEC-Q101-qualified variants (e.g., 5KP28AHE3_A), which carry additional qualification markings.
How does the 5KP28A-E3/54 compare to bidirectional TVS diodes in surge protection?
The 5KP28A-E3/54 is unidirectional and optimized for DC power line protection where polarity is fixed - offering lower leakage current (<2.0 μA at VWM) and tighter VBR tolerance than equivalent bidirectional parts. Unlike bidirectional TVS diodes, it does not conduct during negative transients on positive rails, avoiding unintended discharge paths. For AC or floating signal lines, a bidirectional variant would be required; the 5KP28A-E3/54 is purpose-built for asymmetric DC clamping scenarios.
What thermal considerations apply when using the 5KP28A-E3/54 in high-power applications?
The 5KP28A-E3/54 has a maximum junction temperature of 175 °C and requires adequate PCB copper area or heatsinking for sustained power dissipation. Its 8.0 W steady-state power rating (PD) applies only with infinite heatsink at TL = 75 °C; derating begins above 25 °C ambient per Figure 2. In high-duty-cycle environments, thermal simulation must verify that transient energy absorption does not cause localized overheating - especially critical in enclosed enclosures or near heat sources. The 5KP28A-E3/54's P600 package supports through-hole mounting for enhanced thermal transfer.
5KP28A-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):
- 28V
- Voltage - Breakdown (Min):
- 31.1V
- Voltage - Clamping (Max) @ Ipp:
- 45.4V
- Current - Peak Pulse (10/1000µs):
- 110A
- 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
5KP28A-E3/54 FAQ
1.How can I place an order for 5KP28A-E3/54 through Aetrix?
Please submit a Request for Quotation (RFQ) for 5KP28A-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 5KP28A-E3/54 reliable?
The price and inventory of 5KP28A-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 5KP28A-E3/54 is usually 5 days.
3.What payment methods are accepted for 5KP28A-E3/54?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 5KP28A-E3/54 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 5KP28A-E3/54?
5KP28A-E3/54 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 5KP28A-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 5KP28A-E3/54?
For technical support, including 5KP28A-E3/54 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 5KP28A-E3/54 requirements.
6.How does Aetrix verify that 5KP28A-E3/54 is sourced from the original manufacturer or authorized distributors?
All 5KP28A-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 5KP28A-E3/54 meets industry standards.
7.What is the process for return or replacement of 5KP28A-E3/54?
All 5KP28A-E3/54 units undergo pre-shipment inspection (PSI). If there is an issue with 5KP28A-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 5KP28A-E3/54 part is unused and in its original packaging.
Return procedure for 5KP28A-E3/54:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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