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Vishay General Semiconductor - Diodes Division 5KP85HE3/73
- Part No.:
- 5KP85HE3/73
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- P600, Axial
- Datasheet:
-
5KP85HE3/73.pdf
- Description:
- TVS DIODE 85VWM 151VC P600
- Quantity:
- Payment:
- Shipping:
Inventory:7,201
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Product details
Overview
5KP85HE3/73 from Vishay General Semiconductor is a unidirectional TransZORB® transient voltage suppressor (TVS) diode in P600 package, rated for 85 V stand-off voltage (VWM), 94.4–104 V breakdown (VBR), and 5000 W peak pulse power (10/1000 μs). It clamps transients to ≤137 V at 36.5 A peak current and is AEC-Q101 qualified for automotive electronics protection.
For engineers reviewing the 5KP85HE3/73 datasheet, 5KP85HE3/73 pinout, 5KP85HE3/73 application, or 5KP85HE3/73 equivalent, this device is selected for high-energy surge suppression on DC power rails-especially in automotive ECUs, industrial power supplies, and sensor interface circuits where robustness against load dump and inductive switching transients is required.
Technical Context
The 5KP85HE3/73 uses a glass-passivated P600 chip junction optimized for fast response (<1 ns) and low incremental surge resistance, enabling precise clamping under repetitive 10/1000 μs surges at 0.01% duty cycle. Its unidirectional polarity and cathode-band marking support straightforward integration into positive-rail protection schemes.
Designed for operation from –55 °C to +175 °C, it sustains 8.0 W steady-state power dissipation on an infinite heatsink at 75 °C lead temperature and withstands 500 A non-repetitive forward surge (8.3 ms half-sine), making it suitable for crowbar-replacement applications in switching power supply outputs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 85 V - Maximum continuous reverse operating voltage before clamping begins; sets minimum system rail margin for reliable standby operation. |
| VBR @ IT = 5 mA | 94.4–104 V - Breakdown threshold range; ensures consistent turn-on across production lots under standardized test conditions. |
| VC @ IPPM = 36.5 A | ≤137 V - Clamped voltage during 5000 W transient; defines maximum stress imposed on downstream ICs during surge events. |
| PPPM | 5000 W - Peak pulse power handling (10/1000 μs); enables suppression of high-energy transients without failure. |
| IFSM | 500 A - Non-repetitive forward surge rating (8.3 ms); supports temporary overcurrent conditions like load dump without bond-wire fusing. |
| TJ max. | +175 °C - Maximum junction temperature; allows deployment in under-hood automotive environments with minimal thermal derating. |
| Qualification | AEC-Q101 - Certified for automotive-grade reliability including temperature cycling, humidity bias, and HTRB; required for ECU and body control module use. |
Pinout & Package
5KP85HE3/73 is housed in the axial-lead P600 package (JEDEC DO-201AD), featuring matte tin-plated leads solderable per J-STD-002 and JESD 22-B102. The cathode is marked by a color band on the body.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (unbanded end) | Low-side connection point | Connected to ground or return path; completes clamping loop when transient exceeds VWM. |
| Cathode (banded end) | High-side connection point | Connected to protected line (e.g., battery rail); conducts avalanche current during overvoltage events. |
Key Features
| Feature | Design Value |
|---|---|
| 5000 W peak pulse power (10/1000 μs) | Enables single-device protection against ISO 7637-2 Pulse 5a (load dump) up to 120 V without series impedance. |
| AEC-Q101 qualification | Validates long-term reliability in automotive environments including thermal shock, mechanical vibration, and humidity exposure. |
| Low incremental surge resistance | Minimizes voltage overshoot during fast-rising transients (e.g., ESD or relay bounce), improving clamping precision. |
| 175 °C max junction temperature | Supports placement near heat-generating components (e.g., MOSFETs, inductors) without thermal shutdown or parameter drift. |
Applications
| Automotive Engine Control Unit (ECU) Power Input | Industrial Switching Power Supply Output |
|---|---|
Use Scenario: Protects microcontroller and CAN transceiver power inputs from load dump transients (up to 120 V, 400 ms) during alternator regulation failure. IC Role / Device Role / Timing Role: Unidirectional TVS clamping element placed directly across battery rail and ground, activated within nanoseconds of overvoltage onset. Use Value: Limits voltage seen by downstream regulators to ≤137 V, preventing latch-up or permanent damage while allowing fuse coordination. | Use Scenario: Shields output stage of 48 V telecom DC-DC converter from inductive kickback caused by relay or solenoid switching. IC Role / Device Role / Timing Role: Crowbar-replacement surge suppressor connected across output terminals, absorbing energy without short-circuiting the supply. Use Value: Sustains 5000 W pulses without degradation, enabling system reset after fault clearance instead of catastrophic failure. |
| Onboard Charger (OBC) DC Link Protection | Heavy-Duty Sensor Interface Module |
Use Scenario: Guards bidirectional DC link between AC/DC front-end and DC/DC isolation stage in EV onboard chargers exposed to grid surges and regenerative spikes. IC Role / Device Role / Timing Role: High-power unidirectional clamp referenced to positive rail, triggered only during positive overvoltage events. Use Value: Withstands repetitive 10/1000 μs transients at 0.01% duty cycle, ensuring longevity in high-frequency charging cycles. | Use Scenario: Safeguards analog front-end of pressure/temperature sensor module in agricultural machinery subject to ignition noise and alternator ripple. IC Role / Device Role / Timing Role: Primary overvoltage protector on 24 V sensor supply line, placed upstream of LDO and signal conditioning circuitry. Use Value: Clamps transients to ≤137 V while maintaining <2 μA leakage at 85 V, preserving measurement accuracy and quiescent current budget. |
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 peak power (600 W), smaller SMB package, same 85 V VWM, but lower IPPM (62.7 A) and higher VC (139 V). | Suitable for space-constrained PCBs with lower-energy threats (e.g., IEC 61000-4-5 Level 2), not load dump. | Select when board area is critical and surge energy is ≤600 W; verify thermal margin due to smaller package. |
| 1.5KE85A | Same P600 package and 85 V VWM, but lower peak power (1500 W), lower IPPM (15.2 A), and higher VC (137 V at 11 A). | Applicable for general-purpose industrial equipment with moderate surge requirements (e.g., motor drive control boards). | Choose when cost sensitivity outweighs peak energy needs; confirm system-level clamping margin remains adequate. |
Compared with SMBJ85A-E3/52 and 1.5KE85A, the 5KP85HE3/73 delivers 3.3× and 3.3× higher peak pulse power respectively, enabling direct replacement of crowbar circuits in automotive and high-reliability power systems where sustained 5000 W suppression is mandatory.
Availability
5KP85HE3/73 is available at Aetrix Electronics and suitable for automotive engine control units, industrial switching power supplies, onboard EV chargers, and heavy-duty sensor interface modules requiring stable component supply across extended product lifecycles.
Supply support for 5KP85HE3/73 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, power handling, and automotive qualification.
The 5KP series was engineered specifically for high-energy transient suppression in automotive and industrial power systems-replacing traditional crowbar circuits with robust, resettable clamping performance.
FAQ
What is the clamping voltage of the 5KP85HE3/73 under maximum rated surge current?
The 5KP85HE3/73 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 guaranteed per JEDEC test conditions and appears in the Electrical Characteristics table of the Vishay datasheet (Document Number 88308, page 2). The clamping behavior is repeatable and forms the basis for downstream circuit protection design using the 5KP85HE3/73.
Is the 5KP85HE3/73 RoHS compliant and halogen-free?
Yes, the 5KP85HE3/73 is RoHS compliant per Directive 2011/65/EU and meets JEDEC JS709A halogen-free standards. The "HE3" suffix explicitly denotes AEC-Q101 qualification and RoHS compliance, and the molding compound satisfies UL 94 V-0 flammability rating. These attributes are confirmed in the Mechanical Data and Material Categorization sections of the official Vishay datasheet for the 5KP5.0A–5KP188A family.
Does the 5KP85HE3/73 have bidirectional capability?
No, the 5KP85HE3/73 is unidirectional only. Its electrical characteristics-including breakdown voltage, clamping voltage, and leakage current-are specified for reverse-biased operation, and the cathode is marked by a color band. Bidirectional variants (e.g., 5KP85CA) exist in the same family but are distinct orderable parts; the 5KP85HE3/73 must be used with correct polarity alignment in circuit layout.
What is the maximum operating temperature for the 5KP85HE3/73?
The 5KP85HE3/73 has a specified operating junction and storage temperature range of –55 °C to +175 °C. This maximum junction temperature of +175 °C is validated under AEC-Q101 stress testing and enables deployment in under-hood automotive locations and high-ambient industrial enclosures. Derating curves for peak pulse power versus initial junction temperature are provided in Figure 2 of the Vishay datasheet.
How does the 5KP85HE3/73 differ from standard 1.5KE-series TVS diodes?
The 5KP85HE3/73 delivers 5000 W peak pulse power-more than three times the 1500 W rating of the 1.5KE85A-while sharing the same P600 package footprint. It also offers higher IPPM (36.5 A vs. 11 A) and tighter VBR tolerance (5%) compared to many 1.5KE variants. These differences make the 5KP85HE3/73 suitable for demanding applications like automotive load dump protection where the 1.5KE85A would fail catastrophically.
5KP85HE3/73 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- P600, Axial
- Series:
- TransZorb®
- Packaging:
- Tape & Box (TB)
- 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:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 175°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Through Hole
- Supplier Device Package:
- P600
5KP85HE3/73 FAQ
1.How can I place an order for 5KP85HE3/73 through Aetrix?
Please submit a Request for Quotation (RFQ) for 5KP85HE3/73 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 5KP85HE3/73 reliable?
The price and inventory of 5KP85HE3/73 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 5KP85HE3/73 is usually 5 days.
3.What payment methods are accepted for 5KP85HE3/73?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 5KP85HE3/73 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 5KP85HE3/73?
5KP85HE3/73 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 5KP85HE3/73 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 5KP85HE3/73?
For technical support, including 5KP85HE3/73 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 5KP85HE3/73 requirements.
6.How does Aetrix verify that 5KP85HE3/73 is sourced from the original manufacturer or authorized distributors?
All 5KP85HE3/73 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 5KP85HE3/73 meets industry standards.
7.What is the process for return or replacement of 5KP85HE3/73?
All 5KP85HE3/73 units undergo pre-shipment inspection (PSI). If there is an issue with 5KP85HE3/73, 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 5KP85HE3/73 part is unused and in its original packaging.
Return procedure for 5KP85HE3/73:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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