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Vishay General Semiconductor - Diodes Division 5KP18AHE3_A/C
- Part No.:
- 5KP18AHE3_A/C
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- P600, Axial
- Datasheet:
-
5KP18AHE3_A/C.pdf
- Description:
- TVS DIODE
- Quantity:
- Payment:
- Shipping:
Inventory:8,855
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Product details
Overview
5KP18AHE3_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 DC power rails and signal lines. It features 5000 W peak pulse power (10/1000 μs), 18.0 V stand-off voltage (VWM), 29.2 V maximum clamping voltage (VC) at 171 A peak pulse current, and AEC-Q101 qualification for automotive-grade reliability.
For engineers reviewing the 5KP18AHE3_A/C datasheet, 5KP18AHE3_A/C pinout, 5KP18AHE3_A/C application, or 5KP18AHE3_A/C equivalent, key selection criteria include clamping performance under 10/1000 μs surges, unidirectional polarity compatibility with DC-biased circuits, thermal derating above 25 °C, and P600 lead-forming requirements for PCB layout and heatsinking.
Technical Context
This TVS diode operates as a voltage-clamping device triggered by reverse-biased avalanche breakdown. Its P600 glass-passivated junction delivers low incremental surge resistance and sub-nanosecond response time to suppress transients induced by inductive switching or lightning surges.
It is rated for 500 A non-repetitive forward surge current (8.3 ms half-sine), 175 °C maximum junction temperature, and meets JESD 22-B106 solderability (275 °C, 10 s). The HE3 suffix confirms AEC-Q101 qualification and JESD 201 Class 2 whisker resistance.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 18.0 V - Maximum continuous reverse operating voltage before clamping begins; sets minimum system DC rail margin. |
| VBR min/max | 20.0 V / 22.1 V at 5.0 mA - Breakdown voltage tolerance defines clamping onset consistency across production lots. |
| VC @ IPPM | 29.2 V at 171 A - Clamped voltage during 10/1000 μs surge; determines protected circuit's maximum transient stress. |
| PPPM | 5000 W - Peak pulse power handling capacity; enables robust protection against IEC 61000-4-5 Level 4 surges. |
| IFSM | 500 A - Forward surge rating supports crowbar-style fault clearing without device failure. |
| TJ max | 175 °C - Junction temperature limit allows operation in under-hood automotive environments with proper heatsinking. |
| Package | P600 - Axial-leaded, UL 94 V-0 molded epoxy case; requires ≥9.1 mm lead spacing and thermal relief pads for 8 W steady-state 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. Case dimensions: 9.1 mm × 9.1 mm × 25.4 mm (L × W × D), lead diameter 1.32 mm.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry / low-side reference | Connected to ground or lower-potential node in unidirectional clamp configuration. |
| Cathode | Avalanche breakdown terminal / high-side connection | Connected to protected line; color band identifies this terminal for correct PCB orientation. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive powertrain and chassis applications requiring zero defect reliability over temperature and lifetime. |
| 5000 W peak pulse power (10/1000 μs) | Enables single-device protection against severe transients without cascaded TVS or external fusing coordination. |
| Low clamping ratio (VC/VBR ≈ 1.32) | Minimizes overvoltage stress on downstream MOSFETs, ICs, and sensors during surge events. |
| P600 glass-passivated junction | Provides stable leakage (<2.0 μA at VWM) and repeatable breakdown characteristics across thermal cycling. |
| JESD 201 Class 2 whisker resistance | Ensures long-term solder joint integrity in high-vibration environments such as engine control units. |
Applications
| Automotive Power Supply Protection | Industrial Motor Drive DC Bus |
|---|---|
|
Use Scenario: Protecting 24 V battery-fed ECUs from load-dump transients up to ISO 7637-2 Pulse 5a (110 V, 400 ms). IC Role / Device Role / Timing Role: Unidirectional TVS clamping device placed between battery rail and primary DC/DC converter input. Use Value: Limits transient voltage to ≤29.2 V, preventing damage to 36 V-rated input stages while surviving 5000 W surges. |
Use Scenario: Safeguarding IGBT gate drivers and bus capacitors against commutation spikes in 48 V servo drives. IC Role / Device Role / Timing Role: High-power crowbar replacement mounted directly across DC bus terminals. Use Value: Absorbs 171 A peak currents without degradation, enabling fuse coordination and system reset after fault clearance. |
| Telecom Line Card Surge Protection | Renewable Energy Inverter DC Link |
|
Use Scenario: Shielding PoE-powered Ethernet PHYs and PMICs from induced lightning surges on 48 V DC distribution lines. IC Role / Device Role / Timing Role: Secondary-level TVS on isolated DC output rails of telecom power modules. Use Value: Clamps 10/1000 μs surges to 29.2 V within <1 ns, preserving signal integrity of 100BASE-TX interfaces. |
Use Scenario: Protecting photovoltaic string inverters from grid-switching transients and capacitor discharge events. IC Role / Device Role / Timing Role: Parallel-mounted TVS on 600 V DC link, thermally coupled to heatsink via P600 body. Use Value: Withstands 175 °C junction temperature and dissipates 8.0 W continuously, supporting 24/7 outdoor operation. |
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 SMAJ18A | Lower peak power (400 W), SMA package (surface-mount), 28.0 V VC at 14.3 A | Suitable for board-level ESD/surge on low-current signal lines; not rated for automotive load dump. | Select when space-constrained layouts require SMT and surge energy is ≤400 W. |
| ON Semiconductor 1.5KE18A | Same P600 package, 1500 W peak power, 29.2 V VC at 51.0 A, no AEC-Q101 qualification | Acceptable for industrial power supplies but lacks automotive qualification and thermal robustness. | Choose for cost-sensitive non-automotive designs where 1500 W clamping suffices and AEC-Q101 is not mandated. |
Compared with SMAJ18A and 1.5KE18A, the 5KP18AHE3_A/C delivers 3.3× higher surge power handling and automotive-grade reliability-critical for protecting high-current DC rails where single-event failure must be avoided.
Availability
5KP18AHE3_A/C is available at Aetrix Electronics and suitable for automotive ECU protection, industrial motor drive DC bus safeguarding, and renewable energy inverter DC link surge suppression requiring stable component supply and long-lifecycle support.
Supply support for 5KP18AHE3_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 high-reliability diodes, rectifiers, and protection devices for demanding industrial and automotive applications.
The 5KP series was engineered specifically for high-energy transient suppression in automotive power systems and industrial power supplies-emphasizing rugged P600 packaging, AEC-Q101 compliance, and precise clamping performance under repetitive surge stress.
FAQ
What is the clamping voltage of the 5KP18AHE3_A/C under a standard 10/1000 μs surge?
The 5KP18AHE3_A/C clamps to a maximum of 29.2 V when subjected to its rated 171 A peak pulse current (10/1000 μs waveform). This value is guaranteed across production lots and measured per JEDEC standards at TA = 25 °C. The clamping voltage remains stable due to the device's low incremental surge resistance and glass-passivated junction structure.
Is the 5KP18AHE3_A/C suitable for bidirectional transient protection?
No, the 5KP18AHE3_A/C is unidirectional only, with polarity indicated by a cathode band. It conducts only in reverse breakdown mode and blocks forward current up to 100 A. For bidirectional protection, a pair of 5KP18AHE3_A/C devices in series-opposing configuration-or a dedicated bidirectional TVS like 5KP18CA-must be used.
Does the HE3 suffix on 5KP18AHE3_A/C indicate AEC-Q101 qualification?
Yes, the HE3 suffix explicitly denotes AEC-Q101 qualification per the Vishay ordering nomenclature. This includes stress testing for temperature cycling, humidity bias, mechanical shock, and high-temperature operating life-validating suitability for automotive powertrain and chassis applications.
What is the maximum steady-state power dissipation for the 5KP18AHE3_A/C?
The 5KP18AHE3_A/C has a maximum steady-state power dissipation (PD) of 8.0 W when mounted on an infinite heatsink at lead temperature (TL) = 75 °C. Derating is required above 25 °C ambient, per Figure 5 in the datasheet; at 100 °C ambient, usable PD drops to approximately 4.5 W.
Can the 5KP18AHE3_A/C replace a 1.5KE18A in an existing design?
Direct replacement is not recommended without layout and thermal review. While both use P600 packages, the 5KP18AHE3_A/C handles 5000 W vs. 1500 W and generates significantly more heat during surge events. PCB copper area, heatsinking, and fuse coordination must be re-evaluated to accommodate its higher energy absorption capability.
5KP18AHE3_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):
- 18V
- Voltage - Breakdown (Min):
- 20V
- Voltage - Clamping (Max) @ Ipp:
- 29.2V
- Current - Peak Pulse (10/1000µs):
- 171A
- 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
5KP18AHE3_A/C FAQ
1.How can I place an order for 5KP18AHE3_A/C through Aetrix?
Please submit a Request for Quotation (RFQ) for 5KP18AHE3_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 5KP18AHE3_A/C reliable?
The price and inventory of 5KP18AHE3_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 5KP18AHE3_A/C is usually 5 days.
3.What payment methods are accepted for 5KP18AHE3_A/C?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 5KP18AHE3_A/C transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 5KP18AHE3_A/C?
5KP18AHE3_A/C orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 5KP18AHE3_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 5KP18AHE3_A/C?
For technical support, including 5KP18AHE3_A/C datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 5KP18AHE3_A/C requirements.
6.How does Aetrix verify that 5KP18AHE3_A/C is sourced from the original manufacturer or authorized distributors?
All 5KP18AHE3_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 5KP18AHE3_A/C meets industry standards.
7.What is the process for return or replacement of 5KP18AHE3_A/C?
All 5KP18AHE3_A/C units undergo pre-shipment inspection (PSI). If there is an issue with 5KP18AHE3_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 5KP18AHE3_A/C part is unused and in its original packaging.
Return procedure for 5KP18AHE3_A/C:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
5KP18AHE3_A/C Tags
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