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Vishay General Semiconductor - Diodes Division 5KP85A-E3/54
- Part No.:
- 5KP85A-E3/54
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- P600, Axial
- Datasheet:
-
5KP85A-E3/54.pdf
- Description:
- TVS DIODE 85VWM 137VC P600
- Quantity:
- Payment:
- Shipping:
Inventory:2,748
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Product details
Overview
5KP85A-E3/54 from Vishay General Semiconductor is a unidirectional TransZORB® transient voltage suppressor (TVS) diode in P600 package, designed for high-energy surge clamping on power rails and signal lines. It features 85 V stand-off voltage (VWM), 94.4–104 V breakdown range (VBR), 137 V maximum clamping voltage 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, ICs, and sensor interfaces against lightning-induced transients and inductive switching surges in automotive and industrial power supplies.
For engineers reviewing the 5KP85A-E3/54 datasheet, 5KP85A-E3/54 pinout, 5KP85A-E3/54 application, or 5KP85A-E3/54 equivalent, this page delivers verified electrical parameters, clamping behavior under surge conditions, thermal derating curves, RoHS-compliant packaging details, and validated alternative parts for overvoltage protection design validation and BOM optimization.
Technical Context
The 5KP85A-E3/54 employs a glass-passivated P600 junction optimized for fast response (<1 ns) and low incremental surge resistance, enabling precise clamping during 10/1000 μs transients. Its unidirectional polarity and 85 V stand-off rating make it suitable for DC-biased rail protection where reverse conduction must be blocked until breakdown.
It operates across –55 °C to +175 °C junction temperature, with 8.0 W steady-state power dissipation on infinite heatsink at TL = 75 °C and 500 A non-repetitive forward surge capability (8.3 ms half-sine). Thermal derating follows JEDEC-defined curves, requiring careful PCB copper area planning for transient energy absorption.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 85 V - Maximum continuous reverse voltage before leakage exceeds 2 μA; defines safe operating margin below clamping threshold. |
| VBR (min/max) | 94.4 V / 104 V - Breakdown occurs within this range at 5 mA test current; ensures predictable turn-on under surge. |
| VC @ IPPM | 137 V - Clamped voltage at 36.5 A peak pulse current; determines protected circuit's maximum transient exposure. |
| PPPM | 5000 W - Peak pulse power handling (10/1000 μs waveform); supports high-energy surge suppression without failure. |
| TJ max. | +175 °C - Maximum junction temperature; enables operation in under-hood automotive and high-ambient industrial environments. |
| Polarity | Unidirectional - Blocks reverse current until breakdown; requires correct orientation relative to DC bias polarity. |
| Package | P600 - Axial-leaded, molded epoxy case rated UL 94 V-0; provides mechanical robustness and thermal path via leads. |
Pinout & Package
P600 package: axial-leaded, cylindrical epoxy body with cathode band marking; lead diameter 0.048–0.052 inch (1.22–1.32 mm); overall length 0.375 inch (9.5 mm); meets JESD 22-B106 solder dip spec (275 °C, 10 s).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry / surge return path | Connected to lower-potential side of protected line; carries full surge current during clamping. |
| Cathode | Reverse-biased terminal / clamping node | Marked by color band; tied to higher-potential rail (e.g., VIN); conducts when transient exceeds VWM. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive-grade reliability including temperature cycling, HTRB, and surge endurance per stress test plan. |
| 5000 W peak pulse power (10/1000 μs) | Enables single-device protection against IEC 61000-4-5 Level 4 (4 kV, 2 Ω source) surges on 24 V/48 V systems. |
| Low clamping ratio (VC/VBR ≈ 1.37) | Minimizes overvoltage stress on downstream components-critical for 100 V-rated MOSFETs and logic ICs. |
| 175 °C max junction temperature | Supports placement near heat-generating power stages without thermal shutdown or parameter drift. |
| RoHS-compliant matte tin plating | Ensures solderability per J-STD-002/JESD 22-B102 and whisker resistance per JESD 201 Class 1A (E3 suffix). |
Applications
| Automotive Power Rail Protection | Industrial DC Power Supply Output |
|---|---|
|
Use Scenario: Protecting 24 V battery-fed ECUs from load dump (ISO 7637-2 Pulse 5a) and alternator switching transients. IC Role / Device Role / Timing Role: Unidirectional TVS placed between VBAT and chassis ground to clamp surges up to 120 V peak. Use Value: Withstands 5000 W pulses while limiting clamped voltage to 137 V-within safe margin for 150 V-rated power FETs and CAN transceivers. |
Use Scenario: Safeguarding output stage of 48 V telecom rectifiers against lightning-induced surges on outdoor cabinet feeds. IC Role / Device Role / Timing Role: Primary overvoltage clamp on +48 V output rail, coordinated with upstream MOVs and fuse timing. Use Value: Fast <1 ns response ensures clamping before secondary protection triggers; 175 °C rating allows mounting on same heatsink as regulator pass devices. |
| Motor Drive DC Bus Protection | Sensor Interface Surge Suppression |
|
Use Scenario: Shielding IGBT gate drivers and bus voltage monitors in HVAC inverter drives from inductive kickback during contactor opening. IC Role / Device Role / Timing Role: Parallel-mounted TVS on DC link capacitor terminals to absorb repetitive 10/1000 μs spikes from motor winding collapse. Use Value: 0.01 % duty cycle rating supports repeated surge events; low incremental resistance minimizes voltage overshoot during multi-kA transients. |
Use Scenario: Protecting analog front-end inputs of pressure/temperature sensors in agricultural machinery exposed to field lightning coupling. IC Role / Device Role / Timing Role: Low-capacitance (typ. <100 pF) unidirectional clamp on sensor supply line (VSUPPLY–GND) to prevent latch-up. Use Value: 2 μA max leakage at 85 V preserves sensor accuracy; cathode-band polarity prevents reverse conduction during normal operation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Littelfuse SMAJ85A | Same 85 V VWM, but 400 W PPPM (SMA package); lower surge capacity and thermal mass. | Restricted to low-energy signal-line protection; unsuitable for power rail crowbar replacement. | Select only for space-constrained PCBs where surge energy ≤500 W and ambient <125 °C. |
| ON Semiconductor 1.5KE85A | Same 85 V VWM and P600 package, but 1500 W PPPM (10/1000 μs); lower clamping voltage (125 V) but reduced energy handling. | Acceptable for legacy designs with lower surge requirements (IEC 61000-4-5 Level 2), not for automotive load dump. | Use if cost sensitivity outweighs surge margin; verify thermal design for repeated 1.5 kW pulses. |
Compared with 5KP85A-E3/54, SMAJ85A offers smaller footprint but sacrifices >80 % peak power handling and automotive qualification, while 1.5KE85A retains P600 form factor but cannot sustain the 5000 W transients required for ISO 7637-2 compliance-making 5KP85A-E3/54 the sole option for high-reliability 24 V/48 V system-level surge immunity.
Availability
5KP85A-E3/54 is available at Aetrix Electronics and suitable for automotive ECU protection, industrial DC power supply outputs, motor drive DC bus safeguarding, and sensor interface surge suppression requiring stable component supply across extended production lifecycles.
Supply support for 5KP85A-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, power handling, and automotive qualification.
The 5KP series was engineered specifically for high-energy transient suppression in automotive and industrial power systems-replacing crowbar circuits with robust, resettable clamping that sustains repeated 5000 W surges without degradation.
FAQ
What is the clamping voltage of the 5KP85A-E3/54 under maximum rated surge current?
The 5KP85A-E3/54 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 standards and represents the upper limit of voltage seen by protected circuitry during worst-case surge events. The 5KP85A-E3/54 maintains this clamping performance across its full operating temperature range, ensuring consistent protection in demanding environments.
Is the 5KP85A-E3/54 suitable for automotive applications?
Yes, the 5KP85A-E3/54 is AEC-Q101 qualified and explicitly rated for automotive use, including engine control units, body electronics, and ADAS power domains. Its 175 °C maximum junction temperature, robust P600 package, and ability to withstand load dump transients (ISO 7637-2 Pulse 5a) make it appropriate for under-hood and chassis-mounted systems. The 5KP85A-E3/54 meets all stress tests defined in the AEC-Q101 standard for transient suppressors.
How does the 5KP85A-E3/54 differ from the 1.5KE85A in practical design use?
The 5KP85A-E3/54 delivers 5000 W peak pulse power versus 1500 W for the 1.5KE85A-enabling protection against far more severe transients like automotive load dump or telecom lightning surges. While both share P600 packaging and 85 V VWM, the 5KP85A-E3/54 sustains higher junction temperatures (175 °C vs. 150 °C) and exhibits tighter VBR tolerance (94.4–104 V vs. 90–100 V). The 5KP85A-E3/54 is therefore specified where long-term reliability under repeated high-energy stress is mandatory.
What is the meaning of the "E3/54" suffix in 5KP85A-E3/54?
The "E3" suffix indicates RoHS-compliant matte tin plating meeting JESD 201 Class 1A whisker resistance, while "/54" denotes the preferred package code for 13-inch paper tape and reel delivery with 800 units per reel. This ordering format ensures traceable, standardized logistics for automated SMT assembly. The 5KP85A-E3/54 is not a variant-it is the commercial-grade, AEC-Q101-unqualified version; AEC-Q101-qualified units carry the "HE3" suffix (e.g., 5KP85AHE3_A).
Can the 5KP85A-E3/54 be used in bidirectional configurations?
No, the 5KP85A-E3/54 is unidirectional only, with a clearly marked cathode band indicating polarity. It conducts only when reverse voltage exceeds VBR and blocks forward current beyond VF ≈ 3.5 V at 100 A. For bidirectional surge protection, two 5KP85A-E3/54 devices must be connected anode-to-anode (common-cathode configuration), or a dedicated bidirectional part such as 5KP85CA should be selected. Using a single 5KP85A-E3/54 in reverse-biased AC applications will result in catastrophic failure.
5KP85A-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:
- 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:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 175°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- P600
5KP85A-E3/54 FAQ
1.How can I place an order for 5KP85A-E3/54 through Aetrix?
Please submit a Request for Quotation (RFQ) for 5KP85A-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 5KP85A-E3/54 reliable?
The price and inventory of 5KP85A-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 5KP85A-E3/54 is usually 5 days.
3.What payment methods are accepted for 5KP85A-E3/54?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 5KP85A-E3/54 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 5KP85A-E3/54?
5KP85A-E3/54 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 5KP85A-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 5KP85A-E3/54?
For technical support, including 5KP85A-E3/54 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 5KP85A-E3/54 requirements.
6.How does Aetrix verify that 5KP85A-E3/54 is sourced from the original manufacturer or authorized distributors?
All 5KP85A-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 5KP85A-E3/54 meets industry standards.
7.What is the process for return or replacement of 5KP85A-E3/54?
All 5KP85A-E3/54 units undergo pre-shipment inspection (PSI). If there is an issue with 5KP85A-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 5KP85A-E3/54 part is unused and in its original packaging.
Return procedure for 5KP85A-E3/54:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
5KP85A-E3/54 Tags
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