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Vishay General Semiconductor - Diodes Division 5KP28AHE3_A/C
- Part No.:
- 5KP28AHE3_A/C
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- P600, Axial
- Datasheet:
-
5KP28AHE3_A/C.pdf
- Description:
- TVS DIODE
- Quantity:
- Payment:
- Shipping:
Inventory:3,531
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Product details
Overview
5KP28AHE3_A/C from Vishay General Semiconductor is a unidirectional TransZORB® transient voltage suppressor (TVS) diode in P600 package, designed for high-energy surge protection on power rails and signal lines. It features 28.0 V stand-off voltage (VWM), 31.1–34.4 V breakdown voltage (VBR) at 5 mA, 45.4 V clamping voltage at 110 A peak pulse current, and 5000 W peak pulse power rating with 10/1000 μs waveform.
For engineers reviewing the 5KP28AHE3_A/C datasheet, 5KP28AHE3_A/C pinout, 5KP28AHE3_A/C application, or 5KP28AHE3_A/C equivalent, key selection criteria include unidirectional polarity, AEC-Q101 qualification, 175 °C max junction temperature, low incremental surge resistance, and compatibility with automotive power supply overvoltage protection per ISO 7637-2 and IEC 61000-4-5.
Technical Context
This TVS diode operates as a voltage-clamping device triggered by reverse-biased avalanche breakdown. Its P600 glass-passivated chip junction enables fast response time (<1 ns) and stable clamping under repetitive 10/1000 μs transients at 0.01% duty cycle. The device sustains 500 A non-repetitive forward surge current (IFSM) and exhibits 0.102 %/°C temperature coefficient of VBR.
Designed for placement across DC power inputs or between line and ground in automotive ECUs and industrial power supplies, it replaces crowbar circuits by absorbing transient energy without short-circuit latching. Its 3.5 V forward voltage at 100 A supports coordination with upstream fuses or breakers during overvoltage events.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 28.0 V - maximum continuous reverse operating voltage before clamping begins |
| VBR min/max | 31.1 V / 34.4 V at 5 mA - guaranteed avalanche initiation range for reliable turn-on threshold |
| VC @ IPPM | 45.4 V at 110 A - clamped voltage limiting downstream component stress during 10/1000 μs surge |
| PPPM | 5000 W - peak pulse power handling capacity defining transient energy absorption capability |
| TJ max | +175 °C - maximum junction temperature enabling operation in under-hood automotive environments |
| Polarity | Unidirectional - cathode-band marked device optimized for DC rail protection with defined conduction direction |
| AEC-Q101 | Qualified - validated for automotive-grade reliability including temperature cycling, HTRB, and ESD |
Pinout & Package
Package: P600 molded epoxy case with matte tin-plated leads; meets UL 94 V-0 flammability rating and JESD 22-B102 solderability requirements. Cathode indicated by color band on body.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Low-side reference terminal | Connected to system ground or return path; defines conduction direction during reverse surge |
| Cathode | High-side surge input terminal | Connected to protected line (e.g., battery rail); color band identifies this terminal |
Key Features
| Feature | Design Value |
|---|---|
| 5000 W peak pulse power | Enables single-device protection against ISO 7637-2 Pulse 5a (500 V/1 Ω, 50 ms) and IEC 61000-4-5 combination wave (4 kV) |
| AEC-Q101 qualification | Validates suitability for automotive powertrain and body electronics with extended temperature and life testing |
| Low incremental surge resistance | Minimizes clamping voltage overshoot during fast-rising transients (e.g., load dump, inductive switching) |
| 175 °C junction rating | Supports mounting on PCBs near heat-generating components without derating in engine control units |
| P600 mechanical robustness | Withstands 275 °C solder dip (10 s) and meets JESD 201 class 2 whisker resistance for long-term reliability |
Applications
| Automotive Power Supply Protection | Industrial DC Power Input Stage |
|---|---|
Use Scenario: Protecting 12 V battery-fed ECUs from load dump transients up to 40 V sustained for 400 ms and superimposed spikes. IC Role / Device Role / Timing Role: Voltage-clamping TVS placed between battery rail and ground, activated within nanoseconds of overvoltage onset. Use Value: Limits rail voltage to ≤45.4 V during 110 A surge, preventing damage to MCU, CAN transceivers, and power regulators. | Use Scenario: Safeguarding programmable logic controller (PLC) 24 V DC inputs against field-wiring induced surges from relay coil de-energization. IC Role / Device Role / Timing Role: Standoff-mode protector that remains non-conductive below 28.0 V and clamps within 1 ns when transients exceed VBR. Use Value: Absorbs 5000 W peak energy without failure, eliminating need for sacrificial fuse-only protection schemes. |
| Telecom Power Feeds | Consumer Appliance Motor Drive Inputs |
Use Scenario: Shielding PoE-powered network switches from lightning-induced surges on 48 V DC power feeds. IC Role / Device Role / Timing Role: Primary overvoltage clamp on DC input stage, coordinated with secondary MOV and filter capacitors. Use Value: Provides precise 45.4 V clamping vs. MOV's higher tolerance drift, ensuring consistent protection margin for Ethernet PHY ICs. | Use Scenario: Securing BLDC motor drive boards in smart washing machines against back-EMF spikes during brushless commutation. IC Role / Device Role / Timing Role: Fast-acting shunt device across DC bus, triggered by inductive kick exceeding 28.0 V standoff. Use Value: Withstands 500 A surge current (8.3 ms half-sine), protecting gate drivers and FETs from destructive voltage overshoot. |
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-E3/52 | Lower PPPM (600 W), smaller SMB package, same VWM (28 V), higher VC (45.7 V at 13.3 A) | Not suitable for 5000 W transients; limited to lower-energy IEC 61000-4-2 ESD or board-level EFT | Select only for space-constrained consumer designs where peak surge energy is <100 mJ |
| 1.5KE27A | Same P600 package, lower PPPM (1500 W), VWM = 23.1 V, VC = 37.5 V at 40 A | Inadequate for automotive load dump; insufficient clamping margin for 28 V nominal systems | Use only in legacy industrial controls with verified lower surge threat profiles |
Compared with SMBJ28A-E3/52 and 1.5KE27A, the 5KP28AHE3_A/C delivers 3.3× and 3.3× higher peak pulse power respectively, enabling direct compliance with ISO 7637-2 and IEC 61000-4-5 Level 4 without parallel devices or thermal derating.
Availability
5KP28AHE3_A/C is available at Aetrix Electronics and suitable for automotive electronic control units, industrial programmable logic controllers, telecom power feeding equipment, and consumer appliance motor drives requiring stable component supply and AEC-Q101-compliant surge protection.
Supply support for 5KP28AHE3_A/C 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 TVS devices with emphasis on reliability, power handling, and automotive qualification.
The 5KP series was engineered specifically for high-energy transient suppression in automotive and industrial power systems, targeting replacement of crowbar circuits with robust, resettable clamping performance.
FAQ
What is the clamping voltage of the 5KP28AHE3_A/C and how is it measured?
The 5KP28AHE3_A/C has a maximum clamping voltage (VC) of 45.4 V, measured at 110 A peak pulse current using a 10/1000 μs waveform per JEDEC standards. This value represents the upper limit of voltage seen by downstream circuitry during worst-case surge events and is critical for ensuring protected ICs remain within absolute maximum ratings.
Is the 5KP28AHE3_A/C suitable for automotive applications?
Yes, the 5KP28AHE3_A/C is AEC-Q101 qualified and rated for operation from –55 °C to +175 °C, making it suitable for under-hood and powertrain applications. Its 5000 W peak pulse power and 28.0 V stand-off voltage align with ISO 7637-2 Pulse 5a requirements for 12 V systems, and it is commonly deployed in engine control modules and body control units.
What does the "HE3_A/C" suffix mean in 5KP28AHE3_A/C?
The "HE3" suffix indicates RoHS-compliant construction with AEC-Q101 qualification and JESD 201 class 2 whisker resistance. "_A/C" denotes the preferred packaging code: C = 13-inch paper tape and reel, 800 units per reel, per Vishay's ordering nomenclature in document 88308.
How does the 5KP28AHE3_A/C differ from bidirectional TVS diodes?
The 5KP28AHE3_A/C is unidirectional only, with cathode marked by a color band and designed for DC rail protection where polarity is fixed. Bidirectional variants (e.g., 5KP28CA) provide symmetrical clamping for AC lines or differential signals but exhibit higher leakage and reduced power handling at the same VWM due to dual-junction architecture.
Can the 5KP28AHE3_A/C be used in parallel for higher surge current handling?
No-parallel connection of 5KP28AHE3_A/C devices is not recommended due to mismatched VBR tolerances (±5%) causing current imbalance and premature failure of one unit. For higher current needs, select a higher-rated part (e.g., 5KP33A) or use a TVS array with matched characteristics.
5KP28AHE3_A/C Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- P600, Axial
- Series:
- TransZorb®
- Packaging:
- Bulk
- 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:
- Telecom
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 175°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Through Hole
- Supplier Device Package:
- P600
5KP28AHE3_A/C FAQ
1.How can I place an order for 5KP28AHE3_A/C through Aetrix?
Please submit a Request for Quotation (RFQ) for 5KP28AHE3_A/C 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 5KP28AHE3_A/C reliable?
The price and inventory of 5KP28AHE3_A/C are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 5KP28AHE3_A/C is usually 5 days.
3.What payment methods are accepted for 5KP28AHE3_A/C?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 5KP28AHE3_A/C transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 5KP28AHE3_A/C?
5KP28AHE3_A/C orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 5KP28AHE3_A/C 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 5KP28AHE3_A/C?
For technical support, including 5KP28AHE3_A/C datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 5KP28AHE3_A/C requirements.
6.How does Aetrix verify that 5KP28AHE3_A/C is sourced from the original manufacturer or authorized distributors?
All 5KP28AHE3_A/C 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 5KP28AHE3_A/C meets industry standards.
7.What is the process for return or replacement of 5KP28AHE3_A/C?
All 5KP28AHE3_A/C units undergo pre-shipment inspection (PSI). If there is an issue with 5KP28AHE3_A/C, 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 5KP28AHE3_A/C part is unused and in its original packaging.
Return procedure for 5KP28AHE3_A/C:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
5KP28AHE3_A/C Tags
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