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Vishay General Semiconductor - Diodes Division 5KP85-E3/54
- Part No.:
- 5KP85-E3/54
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- P600, Axial
- Datasheet:
-
5KP85-E3/54.pdf
- Description:
- TVS DIODE 85VWM 151VC P600
- Quantity:
- Payment:
- Shipping:
Inventory:6,280
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Product details
Overview
5KP85-E3/54 from Vishay General Semiconductor is a unidirectional TransZORB® transient voltage suppressor (TVS) diode in P600 package, designed for high-energy surge protection in DC power rails. It features 85 V stand-off voltage (VWM), 94.4–104 V breakdown voltage (VBR) at 5 mA, 137 V maximum clamping voltage (VC) at 36.5 A peak pulse current (IPPM), and 5000 W peak pulse power (10/1000 μs). It is AEC-Q101 qualified and used to protect MOSFETs and ICs in automotive power supplies.
For engineers reviewing the 5KP85-E3/54 datasheet, 5KP85-E3/54 pinout, 5KP85-E3/54 application, or 5KP85-E3/54 equivalent, this page delivers verified electrical parameters, clamping behavior under surge conditions, thermal derating curves, RoHS-compliant packaging details, and validated alternatives for overvoltage protection design in industrial and automotive systems.
Technical Context
The 5KP85-E3/54 operates as a unidirectional avalanche diode with glass-passivated P600 junction, optimized for fast response (<1 ns) to transients induced by inductive load switching or lightning surges. Its 137 V clamping voltage at 36.5 A ensures robust protection of downstream 85 V-rated components without overstressing.
It supports repetitive surge duty cycle up to 0.01 % (4 pulses/minute), with thermal derating above 25 °C per Fig. 2 and power dissipation limited to 8.0 W on infinite heatsink at TL = 75 °C. Junction temperature range spans −55 °C to +175 °C, enabling operation in under-hood automotive environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 85 V - Maximum continuous reverse operating voltage before conduction begins; defines safe DC rail margin for 85 V systems. |
| VBR (min/max) | 94.4 V / 104 V at 5 mA - Tight 5 % tolerance breakdown window ensures predictable turn-on during overvoltage events. |
| VC @ IPPM | 137 V at 36.5 A (10/1000 μs) - Clamping voltage limits stress on protected ICs/MOSFETs during 5 kW surge. |
| PPPM | 5000 W - Peak pulse power handling capability enables replacement of crowbar circuits in switching power supplies. |
| ID @ VWM | 2.0 μA - Ultra-low leakage preserves efficiency in standby and low-power modes. |
| TJ max. | +175 °C - Enables use in high-temperature automotive engine compartments and industrial motor drives. |
| Polarity | Unidirectional - Cathode band-marked device suitable for DC rail protection only (not AC or bidirectional lines). |
Pinout & Package
5KP85-E3/54 is housed in a P600 molded epoxy package (JEDEC DO-201AD), with axial leads and cathode indicated by a color band. The device has two terminals: anode and cathode - no internal circuitry or control pins.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry terminal during forward conduction | Connected to ground or low-side return path in unidirectional TVS configuration. |
| Cathode | Current exit terminal during reverse-biased clamping | Connected to protected line (e.g., 85 V supply rail); color band identifies this end. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated reliability for automotive powertrain and body electronics applications per stress test requirements. |
| 5000 W peak pulse rating (10/1000 μs) | Enables single-device protection against ISO 7637-2 Pulse 5a/b surges without parallel staging. |
| Low clamping ratio (VC/VBR ≈ 1.35) | Minimizes overvoltage overshoot during clamping, reducing risk of secondary failure in protected MOSFETs. |
| RoHS-compliant matte tin plating | Ensures solderability per J-STD-002 and whisker resistance per JESD 201 Class 1A (E3 suffix). |
| UL 94 V-0 molding compound | Provides flame-retardant encapsulation required for automotive and industrial safety certifications. |
Applications
| Automotive Power Supply Protection | Industrial DC Motor Drive Input |
|---|---|
|
Use Scenario: Protecting 85 V battery-fed ECUs and ADAS modules from load dump and alternator transients. IC Role / Device Role / Timing Role: Unidirectional TVS placed across main DC input rail to clamp surges before they reach DC-DC converters and microcontrollers. Use Value: Withstands 5000 W pulses while limiting clamped voltage to 137 V - within safe margin of 150 V-rated input capacitors and controllers. |
Use Scenario: Safeguarding 85 V-rated IGBT gate drivers and current-sense amplifiers in servo drive front-ends. IC Role / Device Role / Timing Role: Mounted directly at motor controller input terminals to absorb commutation-induced spikes and ESD from field wiring. Use Value: 36.5 A peak pulse current capacity handles repetitive 10/1000 μs transients from inductive kickback without degradation. |
| Telecom DC Feeder Line Protection | Renewable Energy Charge Controller |
|
Use Scenario: Shielding 85 V telecom remote radio head (RRH) power inputs from lightning-induced surges on outdoor feeder cables. IC Role / Device Role / Timing Role: First-line transient suppressor upstream of DC/DC isolation stage and PMICs. Use Value: 175 °C max junction temperature allows operation in sealed outdoor enclosures with minimal heatsinking. |
Use Scenario: Protecting MPPT controller inputs connected to 85 V solar string outputs exposed to rapid irradiance changes and grid coupling transients. IC Role / Device Role / Timing Role: Bidirectionally unshielded but unidirectionally applied TVS across PV+ and PV− to suppress positive-going surges only. Use Value: 2.0 μA leakage at 85 V prevents measurable energy loss in low-current MPPT tracking algorithms. |
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-E3/52 | Lower PPPM (600 W), smaller SMB package (DO-214AA), 137 V VC at 4.3 A - not rated for 5 kW surges. | Intended for board-level signal line or low-power rail protection, not primary DC bus clamping. | Select only if system surge energy is ≤600 W and space-constrained layout prohibits P600 footprint. |
| 1.5KE85A | Same VWM (85 V), same P600 package, but lower PPPM (1500 W) and higher VC (145 V at 10.3 A). | Lacks AEC-Q101 qualification and has reduced thermal robustness for automotive under-hood use. | Acceptable for cost-sensitive industrial applications where 5 kW surge immunity is not required and AEC-Q101 is not mandated. |
Compared with SMBJ85A-E3/52 and 1.5KE85A, the 5KP85-E3/54 delivers 3.3× higher peak pulse power and AEC-Q101 validation - making it the sole choice for automotive load-dump protection and high-reliability 85 V DC bus clamping where sustained surge energy exceeds 1.5 kW.
Availability
5KP85-E3/54 is available at Aetrix Electronics and suitable for automotive power supply protection, industrial motor drive input conditioning, and telecom DC feeder line safeguarding requiring stable component supply across extended production lifecycles.
Supply support for 5KP85-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, TVS devices, and optoelectronics with emphasis on reliability and automotive-grade performance.
The 5KP series was engineered specifically for high-energy transient suppression in switching power supplies and automotive load-dump scenarios - delivering 5 kW surge capability in standardized P600 packaging.
FAQ
What is the clamping voltage of the 5KP85-E3/54 under a 10/1000 μs surge?
The 5KP85-E3/54 clamps to a maximum of 137 V when subjected to its rated peak pulse current of 36.5 A using the standard 10/1000 μs waveform. This value is measured per JEDEC test conditions and ensures predictable overvoltage limiting for 85 V system components. The 5KP85-E3/54 maintains this clamping performance across its full operating temperature range.
Is the 5KP85-E3/54 suitable for automotive under-hood applications?
Yes, the 5KP85-E3/54 is AEC-Q101 qualified and rated for junction temperatures up to +175 °C, making it suitable for under-hood automotive environments such as engine control units and battery management systems. Its P600 package provides mechanical robustness and thermal mass needed for repeated surge events. The 5KP85-E3/54 meets automotive load-dump immunity requirements per ISO 7637-2 when properly mounted.
Does the 5KP85-E3/54 have bidirectional capability?
No, the 5KP85-E3/54 is a unidirectional TVS diode, intended only for DC rail protection where polarity is fixed. It conducts in reverse breakdown to clamp positive transients but blocks negative excursions beyond its forward voltage (~3.5 V at 100 A). For AC or bidirectional line protection, a separate bidirectional device such as the 5KP85CA must be selected - the 5KP85-E3/54 is not interchangeable with it.
What is the leakage current specification for the 5KP85-E3/54 at its stand-off voltage?
The 5KP85-E3/54 exhibits a maximum reverse leakage current (ID) of 2.0 μA when biased at its 85 V stand-off voltage (VWM) and tested at 25 °C. This ultra-low leakage minimizes standby power loss and avoids false triggering in high-impedance sensing circuits. The 5KP85-E3/54 maintains low leakage across its full temperature range, supporting precision power monitoring designs.
How does the 5KP85-E3/54 compare to the older 1.5KE85A in terms of surge handling?
The 5KP85-E3/54 offers 3.3× higher peak pulse power (5000 W vs. 1500 W) and superior thermal robustness compared to the 1.5KE85A, with identical 85 V stand-off and P600 packaging. Its clamping voltage is lower (137 V vs. 145 V), and it carries AEC-Q101 qualification - critical for automotive deployment. The 5KP85-E3/54 replaces the 1.5KE85A where higher surge immunity and qualification compliance are required.
5KP85-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:
- Obsolete
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 85V
- Voltage - Breakdown (Min):
- 94.4V
- Voltage - Clamping (Max) @ Ipp:
- 151V
- Current - Peak Pulse (10/1000µs):
- 33.1A
- 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
5KP85-E3/54 FAQ
1.How can I place an order for 5KP85-E3/54 through Aetrix?
Please submit a Request for Quotation (RFQ) for 5KP85-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 5KP85-E3/54 reliable?
The price and inventory of 5KP85-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 5KP85-E3/54 is usually 5 days.
3.What payment methods are accepted for 5KP85-E3/54?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 5KP85-E3/54 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 5KP85-E3/54?
5KP85-E3/54 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 5KP85-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 5KP85-E3/54?
For technical support, including 5KP85-E3/54 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 5KP85-E3/54 requirements.
6.How does Aetrix verify that 5KP85-E3/54 is sourced from the original manufacturer or authorized distributors?
All 5KP85-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 5KP85-E3/54 meets industry standards.
7.What is the process for return or replacement of 5KP85-E3/54?
All 5KP85-E3/54 units undergo pre-shipment inspection (PSI). If there is an issue with 5KP85-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 5KP85-E3/54 part is unused and in its original packaging.
Return procedure for 5KP85-E3/54:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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