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Vishay General Semiconductor - Diodes Division 5KP85-E3/73
- Part No.:
- 5KP85-E3/73
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- P600, Axial
- Datasheet:
-
5KP85-E3/73.pdf
- Description:
- TVS DIODE 85VWM 151VC P600
- Quantity:
- Payment:
- Shipping:
Inventory:6,178
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Product details
Overview
5KP85-E3/73 from Vishay General Semiconductor is a unidirectional TransZORB® transient voltage suppressor (TVS) diode designed for high-energy surge protection in DC power rails and signal lines. It features a 5000 W peak pulse power rating (10/1000 μs), 85 V stand-off voltage (VWM), 94.4–104 V breakdown voltage (VBR at 5 mA), and clamps transients to ≤137 V at 36.5 A peak pulse current - deployed in automotive power supplies, industrial motor drives, and telecom interface protection.
For engineers reviewing the 5KP85-E3/73 datasheet, 5KP85-E3/73 pinout, 5KP85-E3/73 application, or 5KP85-E3/73 equivalent, key selection criteria include its P600 package thermal performance, AEC-Q101 qualification for automotive use, unidirectional polarity with cathode band marking, and 175 °C maximum junction temperature under transient stress.
Technical Context
This TVS diode operates as a voltage-clamping device in parallel with protected circuitry, entering avalanche conduction when reverse voltage exceeds VBR. Its glass-passivated P600 chip junction enables low incremental surge resistance and sub-nanosecond response time to fast-rising transients such as ESD, load dump, and inductive switching spikes.
The 5KP85-E3/73 is rated for 5000 W peak pulse power (10/1000 μs), 8.0 W steady-state power dissipation on infinite heatsink at TL = 75 °C, and withstands 500 A non-repetitive forward surge current (8.3 ms half-sine). Its 0.110 %/°C VBR temperature coefficient ensures stable clamping across -55 °C to +175 °C operating range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 85 V - Maximum continuous reverse operating voltage before leakage exceeds 2 μA; defines safe DC rail margin. |
| VBR (min/max) | 94.4 V / 104 V at 5 mA - Breakdown threshold range; determines earliest clamping onset during overvoltage events. |
| VC @ IPPM | ≤137 V at 36.5 A - Clamped voltage during 5000 W surge; must stay below protected IC's absolute max rating. |
| PPPM | 5000 W (10/1000 μs) - Peak transient energy absorption capacity; validates suitability for ISO 7637-2 Pulse 5a load dump. |
| TJ max | +175 °C - Maximum junction temperature; supports operation in under-hood automotive environments. |
| Polarity | Unidirectional - Cathode-marked device; blocks forward current above ~3.5 V, clamps reverse surges only. |
| AEC-Q101 | Qualified - Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing. |
Pinout & Package
5KP85-E3/73 uses the P600 axial-leaded package: molded epoxy body with matte tin-plated leads, UL 94 V-0 rated, 9.5 mm body length, 0.375" lead spacing, and cathode indicated by color band. Leads are solderable per J-STD-002 and JESD 22-B102, with 275 °C/10 s max solder dip tolerance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry / low-side reference | Connected to ground or lower-potential node; conducts during forward surge or crowbar operation. |
| Cathode | Reverse voltage sensing / clamping node | Connected to protected line (e.g., 12 V rail); avalanche conduction begins here when VWM exceeded. |
Key Features
| Feature | Design Value |
|---|---|
| 5000 W peak pulse power (10/1000 μs) | Enables single-device protection against severe automotive load dump (ISO 7637-2 Pulse 5a) without series impedance. |
| AEC-Q101 qualification | Validates robustness for automotive power modules, engine control units, and ADAS sensor power inputs. |
| Glass-passivated P600 junction | Delivers low dynamic impedance (<1 Ω typical) and stable clamping over lifetime, even after repeated surges. |
| 175 °C max junction temperature | Supports mounting near heat-generating components (e.g., MOSFETs, inductors) in compact industrial power designs. |
| RoHS-compliant E3 suffix | Meets JESD 201 Class 1A whisker resistance; suitable for high-reliability commercial and automotive PCB assembly. |
Applications
| Automotive Power Rail Protection | Industrial Motor Drive DC Bus |
|---|---|
|
Use Scenario: Protecting 12 V/24 V battery-fed ECUs from load dump transients during alternator regulation failure. IC Role / Device Role / Timing Role: Parallel-connected voltage clamp that diverts >500 A surge current away from downstream regulators and microcontrollers. Use Value: Limits rail voltage to ≤137 V during ISO 7637-2 Pulse 5a (110 V, 400 ms), preventing latch-up or gate oxide rupture in protected ICs. |
Use Scenario: Safeguarding IGBT gate drivers and bus voltage monitors in variable-frequency drives exposed to inductive kickback. IC Role / Device Role / Timing Role: Fast-response shunt element absorbing repetitive switching spikes on DC link capacitors and control logic rails. Use Value: Clamps 10/1000 μs transients to <137 V within <1 ns, preserving timing integrity of PWM signals and preventing false triggering. |
| Telecom Interface Surge Protection | Consumer Power Adapter Output Stage |
|
Use Scenario: Shielding Ethernet PHYs and PoE controllers from lightning-induced surges on RJ45 ports and auxiliary power lines. IC Role / Device Role / Timing Role: Primary-level TVS placed before common-mode chokes and secondary-side regulators to absorb differential-mode transients. Use Value: Withstands 5 kV/500 A combination wave (IEC 61000-4-5) while maintaining <200 nA leakage at 85 V, minimizing standby power loss. |
Use Scenario: Preventing overvoltage damage to USB-C PD controllers and synchronous rectifiers during AC line transients or output short-circuit recovery. IC Role / Device Role / Timing Role: Final-stage clamp on regulated 5–20 V output, acting as last-resort defense after primary OVP and current limiting. Use Value: Delivers 5000 W surge handling without derating at 50 °C ambient, enabling compact adapter designs compliant with UL 1449 Type 4. |
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), SMC package, 85 V VWM, 137 V VC @ 4.3 A | Targeted at board-level signal line protection, not main power rail clamping | Select SMBJ85A only for space-constrained, low-energy interfaces where 5KP85-E3/73's P600 thermal mass is unnecessary. |
| 1.5KE85CA | Same P600 package, bidirectional, 85 V VWM, 137 V VC @ 36.5 A, but 1500 W PPPM | Used where AC-coupled or dual-polarity surge paths exist (e.g., RS-485, CAN bus) | Choose 1.5KE85CA only if bidirectional clamping is required; 5KP85-E3/73 offers 3.3× higher surge energy handling for DC rails. |
Compared with SMBJ85A and 1.5KE85CA, the 5KP85-E3/73 delivers industry-leading 5000 W surge capacity in the P600 form factor, making it uniquely suited for automotive load dump and industrial DC bus protection where sustained energy absorption-not just voltage clamping-is critical.
Availability
5KP85-E3/73 is available at Aetrix Electronics and suitable for automotive ECU design, industrial motor drive development, and telecom infrastructure projects requiring stable component supply and long-term lifecycle support.
Supply support for 5KP85-E3/73 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, MOSFETs, optoelectronics, and passive components with emphasis on reliability and ruggedized performance.
The 5KP series was engineered specifically for high-energy transient suppression in automotive and industrial power systems, prioritizing thermal robustness, AEC-Q101 compliance, and consistent clamping under repetitive surge stress.
FAQ
What is the clamping voltage of the 5KP85-E3/73 under full-rated surge current?
The 5KP85-E3/73 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 measured per JEDEC test conditions and guarantees protection for downstream components rated up to 150 V absolute maximum, provided layout minimizes parasitic inductance.
Is the 5KP85-E3/73 suitable for automotive applications?
Yes, the 5KP85-E3/73 carries AEC-Q101 qualification and is explicitly designed for automotive use cases including load dump protection in 12 V and 24 V systems. Its 175 °C maximum junction temperature, robust P600 package, and validated surge performance meet ISO 7637-2 requirements for ECU and module-level protection.
How does the unidirectional polarity of the 5KP85-E3/73 affect circuit placement?
The 5KP85-E3/73 is unidirectional, with the cathode marked by a band and intended for reverse-biased connection across the protected line and ground. It conducts only during negative transients on the cathode side, so correct orientation is essential-reversal would expose the anode to unintended forward conduction during normal operation.
What is the thermal derating behavior of the 5KP85-E3/73 above 25 °C ambient?
The 5KP85-E3/73 follows a linear derating curve: its 5000 W peak pulse power remains valid only at TA = 25 °C; above that, power capability decreases per Figure 2 in the datasheet, reaching ~70 % at 75 °C ambient. For sustained surge duty, PCB copper area and heatsinking must be sized per Figure 5's power derating curve.
Can the 5KP85-E3/73 replace older 1.5KE-series TVS diodes in existing designs?
The 5KP85-E3/73 is not a drop-in replacement for 1.5KE85A/CA due to its higher surge rating and different VBR range (94.4–104 V vs. 90–100 V), though both use P600 packaging. Layout changes may be needed to accommodate its higher energy dissipation; verify clamping margin and thermal relief in the target application before substitution.
5KP85-E3/73 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:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 175°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- P600
5KP85-E3/73 FAQ
1.How can I place an order for 5KP85-E3/73 through Aetrix?
Please submit a Request for Quotation (RFQ) for 5KP85-E3/73 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 5KP85-E3/73 reliable?
The price and inventory of 5KP85-E3/73 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 5KP85-E3/73 is usually 5 days.
3.What payment methods are accepted for 5KP85-E3/73?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 5KP85-E3/73 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 5KP85-E3/73?
5KP85-E3/73 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 5KP85-E3/73 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 5KP85-E3/73?
For technical support, including 5KP85-E3/73 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 5KP85-E3/73 requirements.
6.How does Aetrix verify that 5KP85-E3/73 is sourced from the original manufacturer or authorized distributors?
All 5KP85-E3/73 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 5KP85-E3/73 meets industry standards.
7.What is the process for return or replacement of 5KP85-E3/73?
All 5KP85-E3/73 units undergo pre-shipment inspection (PSI). If there is an issue with 5KP85-E3/73, 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 5KP85-E3/73 part is unused and in its original packaging.
Return procedure for 5KP85-E3/73:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
5KP85-E3/73 Tags
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