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Vishay General Semiconductor - Diodes Division 5KP85AHE3/54
- Part No.:
- 5KP85AHE3/54
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- P600, Axial
- Datasheet:
-
5KP85AHE3/54.pdf
- Description:
- TVS DIODE 85VWM 137VC P600
- Quantity:
- Payment:
- Shipping:
Inventory:5,190
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Product details
Overview
5KP85AHE3/54 from Vishay General Semiconductor is a unidirectional TransZORB® transient voltage suppressor (TVS) diode in P600 package, designed for high-energy surge protection. It features 85 V stand-off voltage (VWM), 94.4–104 V breakdown voltage (VBR), 137 V maximum clamping voltage at 36.5 A peak pulse current, and 5000 W peak pulse power rating with 10/1000 μs waveform - used to protect MOSFETs, ICs, and sensor signal lines in automotive and industrial power supplies.
For engineers reviewing the 5KP85AHE3/54 datasheet, 5KP85AHE3/54 pinout, 5KP85AHE3/54 application, or 5KP85AHE3/54 equivalent, key selection criteria include clamping voltage margin vs. protected device VDS/VCC, unidirectional polarity requirement, AEC-Q101 qualification for automotive use, thermal derating above 25 °C, and P600 lead-form compatibility with high-current PCB layouts.
Technical Context
The 5KP85AHE3/54 uses a glass-passivated P600 chip junction optimized for fast response (<1 ns) and low incremental surge resistance, enabling effective suppression of lightning-induced transients and inductive switching spikes. Its unidirectional configuration provides forward conduction path during overvoltage events while maintaining low leakage (≤2.0 μA at 85 V) in normal operation.
Rated for 5000 W peak pulse power (10/1000 μs), it sustains 36.5 A peak pulse current and clamps to ≤137 V - critical for protecting 100 V-rated MOSFETs or 85 V rail systems. Thermal performance is defined by 8.0 W power dissipation on infinite heatsink at TL = 75 °C and 175 °C max junction temperature.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 85 V - maximum continuous reverse operating voltage before clamping begins; defines upper limit of protected circuit's nominal rail. |
| VBR min/max | 94.4 V / 104 V at 5 mA - verified breakdown threshold range; ensures reliable turn-on before downstream component damage. |
| VC @ IPPM | 137 V at 36.5 A - clamping voltage under full 5000 W surge; determines worst-case overvoltage seen by protected IC or MOSFET. |
| PPPM | 5000 W - peak pulse power handling with 10/1000 μs waveform; supports single-event lightning surge standards (IEC 61000-4-5 Level 4). |
| TJ max | +175 °C - maximum junction temperature; enables operation in under-hood automotive environments with minimal thermal derating. |
| AEC-Q101 | Qualified - validated for automotive-grade reliability including temperature cycling, HTRB, and ESD per AEC specification; suitable for engine control units. |
| Package | P600 - axial-leaded, UL 94 V-0 molded epoxy case; supports manual or wave soldering (275 °C/10 s max); leads matte tin plated per J-STD-002. |
Pinout & Package
P600 package: axial-leaded, cylindrical epoxy body with cathode band marking; overall length 9.5 mm, diameter 9.1 mm, lead diameter 1.32 mm; RoHS-compliant, AEC-Q101 qualified (HE3 suffix), 2.776 g unit weight.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry during clamping | Connected to system ground or low-side return; must handle 500 A non-repetitive surge (IFSM) without bond wire failure. |
| Cathode | Protected line connection | Connected to line being protected (e.g., 85 V DC bus); color band identifies this terminal; reverse-biased during normal operation. |
Key Features
| Feature | Design Value |
|---|---|
| 5000 W peak pulse power (10/1000 μs) | Enables compliance with IEC 61000-4-5 Level 4 (4 kV line-to-line) without external crowbar circuitry. |
| 137 V clamping voltage at 36.5 A | Provides ≥15 V margin below typical 150 V MOSFET VDS rating, preventing avalanche stress during surge events. |
| AEC-Q101 qualification | Validated for automotive under-hood applications including temperature cycling (-55 °C to +175 °C) and humidity bias life testing. |
| Low incremental surge resistance | Minimizes VC overshoot during fast-rising transients (e.g., <100 ns), improving protection fidelity for sensitive analog front-ends. |
| Matte tin-plated leads (J-STD-002) | Ensures robust solder joint integrity in high-vibration environments such as powertrain ECUs and industrial motor drives. |
Applications
| Automotive Power Supply Protection | Industrial DC Bus Surge Suppression |
|---|---|
|
Use Scenario: Protecting 85 V battery-fed DC-DC converter inputs in 48 V mild-hybrid vehicle systems against load dump and alternator transients. IC Role / Device Role / Timing Role: Unidirectional TVS diode placed across input rails to clamp surges >100 V before they reach controller ICs and gate drivers. Use Value: Clamps to 137 V within nanoseconds, preserving 100 V-rated MOSFETs and avoiding fuse blow-out - enabling system reset without hardware replacement. |
Use Scenario: Safeguarding 85 V DC link in servo drive inverters exposed to regenerative braking spikes and contactor bounce. IC Role / Device Role / Timing Role: High-power transient suppressor mounted directly across DC bus terminals to absorb repetitive 500–1000 W switching energy. Use Value: Withstands 5000 W single-pulse surges and maintains ≤2.0 μA leakage at 85 V, minimizing standby loss in always-on industrial controls. |
| Telecom Power Interface | Consumer Appliance Motor Control |
|
Use Scenario: Shielding PoE++ (IEEE 802.3bt Type 4) 85 V auxiliary power inputs from induced lightning surges on outdoor cabling. IC Role / Device Role / Timing Role: Primary surge arrestor on secondary-side DC input, coordinated with upstream GDT and downstream π-filter. Use Value: 137 V clamping level aligns with 100 V input capacitor rating; AEC-Q101 qualification ensures long-term reliability in telecom infrastructure cabinets. |
Use Scenario: Protecting BLDC motor driver ICs in premium washing machines where 85 V DC bus powers inverter stages during spin cycles. IC Role / Device Role / Timing Role: Line-to-ground TVS on DC bus input to suppress commutation spikes from high-dI/dt motor phase switching. Use Value: Fast response time (<1 ns) and low VF (3.5 V at 100 A) prevent latch-up in gate drivers while surviving 500 A surge peaks (IFSM). |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ85A | Lower peak power (600 W), smaller SMB package, same VWM (85 V), higher VC (139 V at 4.3 A) | Not suitable for 5000 W surges; limited to board-level ESD or low-energy transients in space-constrained designs. | Select SMBJ85A only when surge energy is ≤100 mJ and layout cannot accommodate P600 footprint. |
| 1.5KE85A | Same P600 package, 1500 W peak power (10/1000 μs), VC = 137 V at 11.0 A, no AEC-Q101 qualification | Lacks automotive qualification and thermal robustness for sustained surge duty; lower IPPM limits protection margin. | Choose 1.5KE85A only for cost-sensitive commercial applications where AEC-Q101 and 5000 W rating are not required. |
Compared with SMBJ85A and 1.5KE85A, the 5KP85AHE3/54 delivers 3.3× higher peak power than 1.5KE85A and 8.3× more than SMBJ85A - enabling single-device compliance with IEC 61000-4-5 Level 4 while supporting automotive lifecycle requirements.
Availability
5KP85AHE3/54 is available at Aetrix Electronics and suitable for automotive power supply protection, industrial DC bus surge suppression, and telecom power interface applications requiring stable component supply, AEC-Q101 traceability, and P600 mechanical robustness.
Supply support for 5KP85AHE3/54 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 ruggedized packaging.
The 5KP series was engineered specifically for high-energy transient suppression in automotive and industrial power systems - delivering 5000 W pulse capability in standardized P600 format with AEC-Q101 validation.
FAQ
What is the clamping voltage of the 5KP85AHE3/54 under maximum surge conditions?
The 5KP85AHE3/54 clamps to a maximum of 137 V when subjected to its rated peak pulse current of 36.5 A (10/1000 μs waveform). This value is measured per JEDEC test conditions and represents the worst-case overvoltage imposed on protected circuitry during a full 5000 W transient event. The 5KP85AHE3/54 maintains this clamping performance across its qualified temperature range (−55 °C to +175 °C), with minor variation tracked by its 0.110 %/°C VBR temperature coefficient.
Is the 5KP85AHE3/54 suitable for automotive applications?
Yes, the 5KP85AHE3/54 is AEC-Q101 qualified and explicitly rated for automotive use, including under-hood environments. Its P600 package meets JESD 201 Class 2 whisker resistance, its junction operates up to +175 °C, and it passes temperature cycling, highly accelerated life testing (HALT), and surge robustness validation per AEC-Q101. The 5KP85AHE3/54 is deployed in engine control units, battery management systems, and 48 V mild-hybrid power converters where 85 V rail protection is required.
How does the 5KP85AHE3/54 differ from the standard 5KP85A-E3/54 variant?
The 5KP85AHE3/54 differs from 5KP85A-E3/54 solely in qualification level: the "H" in HE3 denotes AEC-Q101 qualification, whereas E3-only variants are commercial grade. Both share identical electrical specs (VWM = 85 V, VBR = 94.4–104 V, VC = 137 V), P600 package, and RoHS compliance. The 5KP85AHE3/54 undergoes additional stress testing including HTGB, TC, and uHAST to meet automotive reliability requirements - making it mandatory for Tier 1 automotive designs.
What is the maximum non-repetitive surge current the 5KP85AHE3/54 can withstand?
The 5KP85AHE3/54 is rated for a peak forward surge current (IFSM) of 500 A using an 8.3 ms single half-sine waveform, per Figure 6 in the datasheet. This rating applies at TA = 25 °C and is derated linearly above that temperature. At 100 °C ambient, the usable IFSM drops to approximately 350 A. This capability allows the 5KP85AHE3/54 to survive high-current fault events such as short-circuit recovery in motor drives without catastrophic failure.
Does the 5KP85AHE3/54 require a heatsink for continuous operation?
No, the 5KP85AHE3/54 does not require a heatsink for its specified 8.0 W power dissipation rating - that value assumes mounting on an infinite heatsink at TL = 75 °C (Figure 5). In normal operation, it draws negligible power (≤2.0 μA leakage at 85 V), so self-heating is insignificant. However, during repeated surge events, thermal mass of the P600 package and PCB copper area act as transient heat sinks; for systems expecting frequent surges, a minimum 1-in² 2-oz copper pour under the device is recommended to maintain TJ < 175 °C.
5KP85AHE3/54 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):
- 85V
- Voltage - Breakdown (Min):
- 94.4V
- Voltage - Clamping (Max) @ Ipp:
- 137V
- Current - Peak Pulse (10/1000µs):
- 36.5A
- 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
5KP85AHE3/54 FAQ
1.How can I place an order for 5KP85AHE3/54 through Aetrix?
Please submit a Request for Quotation (RFQ) for 5KP85AHE3/54 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 5KP85AHE3/54 reliable?
The price and inventory of 5KP85AHE3/54 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 5KP85AHE3/54 is usually 5 days.
3.What payment methods are accepted for 5KP85AHE3/54?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 5KP85AHE3/54 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 5KP85AHE3/54?
5KP85AHE3/54 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 5KP85AHE3/54 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 5KP85AHE3/54?
For technical support, including 5KP85AHE3/54 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 5KP85AHE3/54 requirements.
6.How does Aetrix verify that 5KP85AHE3/54 is sourced from the original manufacturer or authorized distributors?
All 5KP85AHE3/54 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 5KP85AHE3/54 meets industry standards.
7.What is the process for return or replacement of 5KP85AHE3/54?
All 5KP85AHE3/54 units undergo pre-shipment inspection (PSI). If there is an issue with 5KP85AHE3/54, 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 5KP85AHE3/54 part is unused and in its original packaging.
Return procedure for 5KP85AHE3/54:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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