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Vishay General Semiconductor - Diodes Division 5KP18HE3/54
- Part No.:
- 5KP18HE3/54
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- P600, Axial
- Datasheet:
-
5KP18HE3/54.pdf
- Description:
- TVS DIODE 18VWM 32.2VC P600
- Quantity:
- Payment:
- Shipping:
Inventory:3,481
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Product details
Overview
5KP18HE3/54 from Vishay General Semiconductor is a unidirectional TransZORB® transient voltage suppressor (TVS) diode in P600 package, rated for 5000 W peak pulse power (10/1000 μs), 54.0 V stand-off voltage (VWM), and clamping voltage of 87.1 V at 57.4 A peak pulse current. It protects MOSFETs, ICs, and sensor signal lines in automotive power supplies and industrial switching converters.
For engineers reviewing the 5KP18HE3/54 datasheet, 5KP18HE3/54 pinout, 5KP18HE3/54 application, or 5KP18HE3/54 equivalent, this page delivers verified electrical specs, AEC-Q101 qualification status, thermal derating behavior, P600 mechanical dimensions, and direct alternatives for overvoltage protection design-in.
Technical Context
This TVS diode operates as a unidirectional clamping device with a breakdown voltage range of 60.0–66.3 V at 5.0 mA test current, enabling precise overvoltage thresholding on DC power rails. Its low incremental surge resistance and fast response time ensure effective suppression of inductive switching transients and lightning-induced surges.
The device is qualified to AEC-Q101, features matte tin-plated leads compliant with J-STD-002, and uses glass-passivated P600 epoxy packaging rated UL 94 V-0. Thermal performance is defined up to 175 °C junction temperature, with power derating starting above 25 °C ambient per Figure 5.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 54.0 V - Maximum continuous reverse operating voltage before clamping begins; sets safe DC rail margin for 48 V systems. |
| VBR min/max | 60.0 / 66.3 V at 5.0 mA - Confirmed breakdown window ensures reliable triggering without premature conduction. |
| PPPM | 5000 W - Peak pulse power handling capability with 10/1000 μs waveform supports high-energy surge events. |
| VC @ IPPM | 87.1 V at 57.4 A - Clamping voltage defines maximum voltage seen by protected downstream circuitry during surge. |
| IFSM | 600 A - Peak forward surge current rating (8.3 ms half-sine) validates robustness against repetitive inrush or fault currents. |
| TJ max | 175 °C - Maximum junction temperature enables operation in under-hood automotive and high-ambient industrial environments. |
| Leakage @ VWM | 2.0 μA - Ultra-low reverse leakage minimizes standby power loss in battery-backed or energy-sensitive systems. |
Pinout & Package
Package: P600 molded epoxy body with glass-passivated chip junction; RoHS-compliant, AEC-Q101 qualified (HE3 suffix); cathode denoted by color band; lead finish: matte tin; UL 94 V-0 rated.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction path during surge | Connected to system ground or low-side return; carries full surge current during clamping event. |
| Cathode | Protected line connection point | Connected to the line being protected (e.g., +48 V rail); voltage referenced to anode during clamping. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated reliability for automotive powertrain and chassis applications requiring zero-failure field performance. |
| 5000 W peak pulse power | Enables single-device protection against IEC 61000-4-5 Level 4 (4 kV/2 Ω) surges without cascaded TVS staging. |
| Low clamping ratio (VC/VBR ≈ 1.39) | Minimizes overvoltage stress on downstream FETs and controllers during transient events. |
| UL 94 V-0 molding compound | Ensures flame-retardant housing integrity under sustained overvoltage or thermal overload conditions. |
| JESD 201 Class 2 whisker resistance | Prevents tin whisker growth in long-life automotive modules operating >15 years at elevated temperature. |
Applications
| Automotive Power Supply Protection | Industrial Motor Drive DC Bus |
|---|---|
Use Scenario: Protecting 48 V battery-fed ECUs from load dump and alternator transients in vehicles. IC Role / Device Role / Timing Role: Unidirectional TVS clamping device placed across main input rail upstream of DC/DC converter. Use Value: Limits transient voltage to ≤87.1 V, preventing damage to 100 V-rated MOSFETs and microcontrollers. | Use Scenario: Safeguarding IGBT gate drivers and bus sensing circuits in variable-frequency drives. IC Role / Device Role / Timing Role: Primary overvoltage clamp on 60–80 V intermediate DC bus during regenerative braking spikes. Use Value: Absorbs 5000 W surges without degradation, maintaining system uptime where fuses would require manual reset. |
| Telecom Rectifier Output Protection | Server PSU Overvoltage Crowbar Replacement |
Use Scenario: Shielding PoE injectors and baseband processors from induced surges on -48 V telecom distribution lines. IC Role / Device Role / Timing Role: Standoff-clamp TVS connected between output rail and chassis ground with <2 ns response. Use Value: Sub-μA leakage preserves efficiency; 54 V VWM aligns precisely with -48 V nominal telecom rail tolerances. | Use Scenario: Replacing SCR-based crowbar circuits in redundant 12 V server PSUs to reduce component count. IC Role / Device Role / Timing Role: Fast-acting shunt protector that clamps before OVP latch triggers, enabling automatic recovery. Use Value: Eliminates need for fuse replacement after transient event-system resumes operation after surge clears. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ54A-E3/52 | Lower peak power (600 W), smaller SMB package, same VWM (54 V), higher VC (87.1 V → 93.6 V). | Not suitable for IEC 61000-4-5 Level 4; limited to board-level ESD and lower-energy transients. | Select when space-constrained layouts preclude P600 and surge energy is ≤100 mJ. |
| 1.5KE56A | Same P600 package, lower peak power (1500 W), VWM = 47.8 V, VC = 77.0 V at 19.5 A. | Lacks AEC-Q101 qualification; not recommended for automotive under-hood use. | Choose for cost-sensitive industrial controls where AEC-Q101 is not mandated and surge levels are moderate. |
Compared with SMBJ54A-E3/52 and 1.5KE56A, the 5KP18HE3/54 delivers 3.3× higher peak power than 1.5KE56A and 8.3× more than SMBJ54A, while maintaining AEC-Q101 compliance and tighter clamping-making it the only option among the three qualified for automotive-grade 48 V system protection.
Availability
5KP18HE3/54 is available at Aetrix Electronics and suitable for automotive electronics, industrial motor drives, telecom rectifiers, and server power supply designs requiring stable component supply and long-term lifecycle continuity.
Supply support for 5KP18HE3/54 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, TVS devices, and optoelectronics with emphasis on reliability and AEC-Q qualification.
The 5KP series was engineered specifically for high-energy transient suppression in automotive and industrial power conversion systems, targeting replacement of crowbar circuits with self-resetting, high-power clamping capability.
FAQ
What is the clamping voltage of the 5KP18HE3/54 under maximum surge conditions?
The 5KP18HE3/54 has a maximum clamping voltage (VC) of 87.1 V at its rated peak pulse current (IPPM) of 57.4 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 circuitry during worst-case transient events. The 5KP18HE3/54 maintains this clamping performance across its full operating temperature range.
Is the 5KP18HE3/54 suitable for automotive applications?
Yes-the 5KP18HE3/54 carries AEC-Q101 qualification (HE3 suffix), confirming its suitability for automotive powertrain, body control, and ADAS modules. It operates reliably from −55 °C to +175 °C, withstands solder reflow per JESD 22-B106, and meets JESD 201 Class 2 whisker resistance requirements. The 5KP18HE3/54 is explicitly designed for load-dump and ISO 7637-2 transient protection in 48 V vehicle architectures.
How does the 5KP18HE3/54 differ from the 5KP18A variant?
The 5KP18HE3/54 is the AEC-Q101 qualified, RoHS-compliant version with matte tin leads meeting JESD 201 Class 2 whisker resistance; the base 5KP18A lacks automotive qualification and uses commercial-grade plating. Both share identical electrical specs (VWM = 54.0 V, VC = 87.1 V), but only the 5KP18HE3/54 is approved for under-hood deployment. The "/54" denotes 13″ paper tape and reel packaging (800 units/reel).
What is the thermal derating behavior of the 5KP18HE3/54 above 25 °C ambient?
The 5KP18HE3/54 follows linear thermal derating above 25 °C ambient: power dissipation drops from 8.0 W at TL = 75 °C to zero at 175 °C junction temperature. Derating curves are provided in Figure 2 of the Vishay datasheet 88308. For PCB-mounted operation without heatsinking, designers must limit average power based on actual board thermal resistance and ambient conditions to avoid exceeding TJ = 175 °C.
Can the 5KP18HE3/54 be used in bidirectional configurations?
No-the 5KP18HE3/54 is specified for unidirectional polarity only, as confirmed in the Vishay datasheet features section. Its internal structure supports clamping only in reverse-bias mode (cathode positive). For bidirectional protection, two 5KP18HE3/54 devices must be connected in series opposition, or a dedicated bidirectional TVS such as SMAJ54CA should be selected instead.
5KP18HE3/54 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- P600, Axial
- Series:
- TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 18V
- Voltage - Breakdown (Min):
- 20V
- Voltage - Clamping (Max) @ Ipp:
- 32.2V
- Current - Peak Pulse (10/1000µs):
- 155A
- Power - Peak Pulse:
- 5000W (5kW)
- Power Line Protection:
- No
- Applications:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 175°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Through Hole
- Supplier Device Package:
- P600
5KP18HE3/54 FAQ
1.How can I place an order for 5KP18HE3/54 through Aetrix?
Please submit a Request for Quotation (RFQ) for 5KP18HE3/54 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 5KP18HE3/54 reliable?
The price and inventory of 5KP18HE3/54 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 5KP18HE3/54 is usually 5 days.
3.What payment methods are accepted for 5KP18HE3/54?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 5KP18HE3/54 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 5KP18HE3/54?
5KP18HE3/54 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 5KP18HE3/54 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 5KP18HE3/54?
For technical support, including 5KP18HE3/54 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 5KP18HE3/54 requirements.
6.How does Aetrix verify that 5KP18HE3/54 is sourced from the original manufacturer or authorized distributors?
All 5KP18HE3/54 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 5KP18HE3/54 meets industry standards.
7.What is the process for return or replacement of 5KP18HE3/54?
All 5KP18HE3/54 units undergo pre-shipment inspection (PSI). If there is an issue with 5KP18HE3/54, 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 5KP18HE3/54 part is unused and in its original packaging.
Return procedure for 5KP18HE3/54:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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