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Vishay General Semiconductor - Diodes Division 5KP8.5A-E3/54
- Part No.:
- 5KP8.5A-E3/54
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- P600, Axial
- Datasheet:
-
5KP8.5A-E3/54.pdf
- Description:
- TVS DIODE 8.5VWM 14.4VC P600
- Quantity:
- Payment:
- Shipping:
Inventory:4,386
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Product details
Overview
5KP8.5A-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 8.5 V stand-off voltage (VWM), 9.44–10.4 V breakdown voltage (VBR) at 5 mA, 5000 W peak pulse power (10/1000 μs), 347 A peak pulse current (IPPM), and 14.4 V maximum clamping voltage (VC) - used to protect MOSFETs, ICs, and sensor interfaces in automotive and industrial power supplies.
For engineers reviewing the 5KP8.5A-E3/54 datasheet, 5KP8.5A-E3/54 pinout, 5KP8.5A-E3/54 application, or 5KP8.5A-E3/54 equivalent, key selection criteria include clamping voltage margin vs. protected device VDS/VCC, unidirectional polarity requirement, P600 thermal dissipation capability, and AEC-Q101 qualification status for automotive deployment.
Technical Context
The 5KP8.5A-E3/54 operates as a silicon avalanche diode with glass-passivated P600 junction, optimized for non-repetitive 10/1000 μs surge waveforms. Its low incremental surge resistance and fast response time (<1 ns) enable precise overvoltage clamping before downstream components fail.
It is rated for -55 °C to +175 °C operating junction temperature, supports 500 A 8.3 ms forward surge current (IFSM), and maintains stable VBR temperature coefficient of 0.078 %/°C - critical for thermal stability in high-ambient environments like engine control units.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 8.5 V - maximum continuous reverse voltage before leakage exceeds 50 μA; sets upper limit for normal operation without conduction |
| VBR (min/max) | 9.44 V / 10.4 V at 5 mA - defines guaranteed avalanche initiation range; ensures predictable turn-on across production lot |
| VC @ IPPM | 14.4 V at 347 A - clamped voltage during full-rated surge; must be below protected device's absolute maximum rating |
| PPPM | 5000 W (10/1000 μs) - energy-handling capacity for lightning or inductive-switching transients per JEDEC standard |
| TJ max. | +175 °C - enables use in under-hood automotive applications without derating at high ambient temperatures |
| Polarity | Unidirectional - cathode marked by color band; suitable only for DC-biased or single-polarity surge protection |
| Package | P600 - axial-leaded, UL 94 V-0 molded epoxy case; provides mechanical robustness and 275 °C solder dip tolerance |
Pinout & Package
P600 package: axial-leaded, matte tin-plated terminals, cathode identified by color band. Body length 9.5 mm, diameter 9.1 mm, lead spacing 7.6 mm. Compliant with J-STD-002 and JESD 22-B102 solderability standards.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry point during surge conduction | Connected to lower-potential side (e.g., ground or return path); determines current flow direction during clamping |
| Cathode | Avalanche conduction terminal (marked by band) | Connected to protected line (e.g., 12 V rail); reverse-biased during normal operation, avalanches when V > VBR |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, humidity bias, and HTRB testing |
| 5000 W peak pulse power | Withstands IEC 61000-4-5 Level 4 (4 kV) surges without degradation when properly mounted |
| Low clamping ratio (VC/VBR ≈ 1.45) | Minimizes overvoltage stress on protected ICs - e.g., keeps 12 V system transients below 14.4 V |
| Fast response time (<1 ns) | Clamps before ESD or lightning-induced transients propagate into sensitive circuitry |
| P600 thermal mass | Enables 8.0 W steady-state dissipation at TL = 75 °C with infinite heatsink - supports short-duration power supply crowbar replacement |
Applications
| Automotive Power Rail Protection | Industrial Motor Drive DC Bus |
|---|---|
Use Scenario: Protecting engine control unit (ECU) 12 V input against load dump (ISO 16750-2) and alternator ripple. IC Role / Device Role / Timing Role: Unidirectional TVS placed between battery rail and DC-DC converter input to clamp transients above 14.4 V. Use Value: Prevents latch-up or gate oxide damage in buck controller ICs by limiting surge voltage to safe margin below 16 V absolute max rating. | Use Scenario: Safeguarding IGBT gate drivers and microcontrollers on 48 V DC bus in variable-frequency drives. IC Role / Device Role / Timing Role: Mounted across DC bus near motor terminals to absorb inductive kickback from contactor switching. Use Value: Enables system reset after fault instead of permanent failure - replaces crowbar circuits while allowing fuse replacement. |
| Telecom Power Supply Output | Consumer Appliance Mainboard Input |
Use Scenario: Securing 48 V PoE+ output stage against Ethernet cable ESD and lightning-induced surges. IC Role / Device Role / Timing Role: TVS connected between +48 V and return, upstream of hot-swap controller and load switch. Use Value: Clamps 10/1000 μs surges to ≤14.4 V, preserving integrity of IEEE 802.3at-compliant power management ICs. | Use Scenario: Shielding smart refrigerator mainboard from AC line transients coupled via internal SMPS. IC Role / Device Role / Timing Role: Installed at secondary-side DC output (12 V/24 V) of isolated flyback converter. Use Value: Survives repeated 5000 W pulses per IEC 61000-4-5, extending field life in regions with unstable grid voltage. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ8.5A | Lower PPPM (600 W), SMC package, same VWM/VBR range but higher VC (13.6 V) | Not rated for AEC-Q101; limited to commercial-grade consumer/industrial use | Select when board space is constrained and surge energy is ≤600 W - not suitable for automotive load dump. |
| 1.5KE8.5A | Same P600 package, 1500 W PPPM, higher VC (13.4 V), no AEC-Q101 qualification | Lacks automotive qualification and thermal robustness for under-hood mounting | Choose for cost-sensitive industrial designs where 1.5 kW surge immunity suffices and AEC-Q101 is not required. |
Compared with SMBJ8.5A and 1.5KE8.5A, the 5KP8.5A-E3/54 delivers 3.3× higher surge power handling and certified automotive reliability - making it the only option among the three for ISO 16750-2-compliant vehicle electronics.
Availability
5KP8.5A-E3/54 is available at Aetrix Electronics and suitable for automotive power rail protection, industrial motor drive DC bus safeguarding, and telecom PoE+ output surge suppression requiring stable component supply across long production lifecycles.
Supply support for 5KP8.5A-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, MOSFETs, and protection devices with emphasis on reliability, power efficiency, and automotive qualification.
The 5KP series was engineered specifically for high-energy transient suppression in automotive and industrial power systems - delivering robust clamping performance where legacy MOVs or lower-power TVS diodes fail.
FAQ
What is the clamping voltage of the 5KP8.5A-E3/54 under full-rated surge conditions?
The 5KP8.5A-E3/54 has a maximum clamping voltage (VC) of 14.4 V when subjected to its rated peak pulse current of 347 A (10/1000 μs waveform). This value is measured per JEDEC test conditions and guarantees that protected circuitry will not experience voltages exceeding 14.4 V during worst-case transient events - critical for ensuring compatibility with 12 V automotive ICs rated to 16 V absolute maximum.
Is the 5KP8.5A-E3/54 suitable for automotive applications?
Yes, the 5KP8.5A-E3/54 is AEC-Q101 qualified and explicitly rated for automotive use, including engine control units and body electronics exposed to load dump and ISO 7637-2 transients. Its -55 °C to +175 °C operating junction temperature range, P600 mechanical robustness, and validated reliability testing confirm suitability for under-hood and chassis-mounted deployments where the 5KP8.5A-E3/54 must sustain repeated surge events without parametric shift.
What does the "-E3/54" suffix mean in 5KP8.5A-E3/54?
The "-E3" suffix indicates RoHS-compliant, commercial-grade construction with JESD 201 Class 1A whisker resistance; "/54" denotes the preferred packaging code for 13-inch paper tape and reel, with base quantity of 800 units per reel. This ordering format ensures traceability, solderability compliance (J-STD-002), and compatibility with automated SMT placement equipment - essential for high-volume manufacturing of systems using the 5KP8.5A-E3/54.
How does the 5KP8.5A-E3/54 differ from bidirectional TVS diodes?
The 5KP8.5A-E3/54 is unidirectional only, meaning it conducts avalanche current in reverse bias only - ideal for DC-powered lines with defined polarity like automotive 12 V rails. Bidirectional variants (e.g., 5KP8.5CA) would conduct in both directions and are used for AC or data-line protection. Using the 5KP8.5A-E3/54 on AC signals risks forward conduction and failure; its polarity must match the protected circuit's DC bias configuration.
Can the 5KP8.5A-E3/54 replace a crowbar circuit in power supplies?
Yes, the 5KP8.5A-E3/54 is explicitly designed to replace crowbar circuits in switching power supplies, as confirmed in Vishay's application notes. Unlike crowbars that short-circuit and require fuse replacement, the 5KP8.5A-E3/54 clamps overvoltage while remaining functional - enabling automatic recovery after transient clearance. Its 5000 W rating and P600 thermal mass allow it to absorb energy sufficient to let upstream fuses blow or breakers trip without device destruction, preserving system uptime.
5KP8.5A-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):
- 8.5V
- Voltage - Breakdown (Min):
- 9.44V
- Voltage - Clamping (Max) @ Ipp:
- 14.4V
- Current - Peak Pulse (10/1000µs):
- 347A
- 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
5KP8.5A-E3/54 FAQ
1.How can I place an order for 5KP8.5A-E3/54 through Aetrix?
Please submit a Request for Quotation (RFQ) for 5KP8.5A-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 5KP8.5A-E3/54 reliable?
The price and inventory of 5KP8.5A-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 5KP8.5A-E3/54 is usually 5 days.
3.What payment methods are accepted for 5KP8.5A-E3/54?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 5KP8.5A-E3/54 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 5KP8.5A-E3/54?
5KP8.5A-E3/54 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 5KP8.5A-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 5KP8.5A-E3/54?
For technical support, including 5KP8.5A-E3/54 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 5KP8.5A-E3/54 requirements.
6.How does Aetrix verify that 5KP8.5A-E3/54 is sourced from the original manufacturer or authorized distributors?
All 5KP8.5A-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 5KP8.5A-E3/54 meets industry standards.
7.What is the process for return or replacement of 5KP8.5A-E3/54?
All 5KP8.5A-E3/54 units undergo pre-shipment inspection (PSI). If there is an issue with 5KP8.5A-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 5KP8.5A-E3/54 part is unused and in its original packaging.
Return procedure for 5KP8.5A-E3/54:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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