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Vishay General Semiconductor - Diodes Division 5KP188A-E3/51
- Part No.:
- 5KP188A-E3/51
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- P600, Axial
- Datasheet:
-
5KP188A-E3/51.pdf
- Description:
- TVS DIODE 188VWM 328VC P600
- Quantity:
- Payment:
- Shipping:
Inventory:2,305
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Product details
Overview
5KP188A-E3/51 from Vishay General Semiconductor is a unidirectional TransZORB® transient voltage suppressor (TVS) diode designed for high-energy surge protection in DC power lines and sensitive electronics. It delivers 5000 W peak pulse power (10/1000 μs), clamps transients up to 328 V at 15.2 A, and features a 188 V stand-off voltage with ±5 % tolerance - ideal for automotive power supply rail protection and industrial motor drive DC bus safeguarding.
For engineers reviewing the 5KP188A-E3/51 datasheet, 5KP188A-E3/51 pinout, 5KP188A-E3/51 application, or 5KP188A-E3/51 equivalent, key selection criteria include its P600 package thermal performance, unidirectional polarity, AEC-Q101 qualification, 175 °C max junction temperature, and verified clamping behavior under repetitive 0.01 % duty cycle surges.
Technical Context
This TVS diode operates as a voltage-clamping overvoltage protection device in parallel with the load, entering avalanche breakdown when reverse voltage exceeds its 209–231 V breakdown range (VBR at 5 mA). Its low incremental surge resistance ensures minimal voltage overshoot during fast transients, while the glass-passivated P600 package supports robust thermal dissipation under high IPPM events.
Designed for single-pulse and low-duty-cycle repetitive surge suppression, it complies with JEDEC standards for 10/1000 μs waveform testing and meets AEC-Q101 for automotive reliability. The 3.5 V forward voltage at 100 A enables effective crowbar replacement in DC power supplies without requiring active control circuitry.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 188 V - maximum continuous reverse operating voltage before clamping begins |
| VBR (min/max) | 209 V / 231 V at 5 mA - precise avalanche onset range defining protection threshold |
| VC @ IPPM | 328 V at 15.2 A - clamped voltage limiting downstream component stress during surge |
| PPPM | 5000 W - peak pulse power handling capability per 10/1000 μs waveform |
| IFSM | 600 A - non-repetitive forward surge current rating (8.3 ms half-sine) |
| TJ max | +175 °C - maximum junction temperature enabling operation in under-hood automotive environments |
| Polarity | Unidirectional - protects against positive transients only; cathode marked by band |
Pinout & Package
Package: P600 molded epoxy case with matte tin-plated leads; UL 94 V-0 rated; RoHS-compliant (E3 suffix); 9.5 mm body length; lead spacing 8.6 mm; designed for through-hole mounting with 275 °C solder dip tolerance (10 s).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction path | Connected to system ground or low-side return; conducts during forward surge events |
| Cathode | Avalanche clamping node | Connected to protected line; initiates breakdown when reverse voltage exceeds VBR; marked by color band |
Key Features
| Feature | Design Value |
|---|---|
| 5000 W peak pulse power | Enables protection of 24 V–48 V DC systems against lightning-induced surges per IEC 61000-4-5 Level 4 |
| AEC-Q101 qualified | Validated for automotive under-hood applications including engine control units and battery management systems |
| Low clamping ratio (VC/VBR ≈ 1.43) | Minimizes overvoltage exposure to downstream MOSFETs and ICs during transient events |
| P600 glass-passivated junction | Ensures stable VBR over lifetime and immunity to humidity-induced parameter drift |
| 175 °C junction rating | Supports placement near heat-generating components like power converters without derating penalties |
Applications
| Automotive Power Rail Protection | Industrial Motor Drive DC Bus |
|---|---|
Use Scenario: Protecting 24 V/48 V battery-fed ECUs from load dump and alternator surge transients per ISO 7637-2. IC Role / Device Role / Timing Role: Standoff-clamp TVS placed directly across input terminals to shunt energy before reaching LDOs and microcontrollers. Use Value: Clamps to 328 V within nanoseconds, preventing damage to 36 V-rated input stages while surviving repeated 12 V/24 V load dump pulses. | Use Scenario: Safeguarding IGBT gate drivers and bus capacitors in variable-frequency drives exposed to inductive switching spikes. IC Role / Device Role / Timing Role: Parallel-connected transient suppressor on main DC link to absorb regenerative energy spikes during rapid deceleration. Use Value: Withstands 600 A single-half-sine surge (8.3 ms), enabling reliable operation without crowbar circuit complexity or reset delays. |
| Telecom Power Supply Output | Renewable Energy Inverter DC Input |
Use Scenario: Secondary-side surge protection on +48 V telecom rectifier outputs feeding base station radios. IC Role / Device Role / Timing Role: Final-stage clamp suppressing coupled transients from AC line surges or nearby RF interference. Use Value: 188 V VWM allows safe operation at nominal 48 V output with 200 % margin, while 5000 W rating handles multi-kV coupling events. | Use Scenario: DC input protection in solar string inverters subjected to lightning-induced surges on rooftop PV arrays. IC Role / Device Role / Timing Role: Primary overvoltage clamp on MPPT input stage to prevent damage to boost converter MOSFETs and controllers. Use Value: 175 °C TJ max and P600 thermal mass enable sustained operation in outdoor enclosures exceeding 85 °C ambient. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ188A | 600 W PPPM, SMC package, lower IPPM (22.5 A), same VWM/VBR range | Not AEC-Q101 qualified; limited to commercial-grade consumer/industrial use | Select when board space is constrained and surge energy is ≤600 W |
| 1.5KE188A | 1500 W PPPM, DO-201 package, higher VC/VBR ratio (≈1.55), no AEC-Q101 certification | Lower thermal mass limits repetitive surge capability; unsuitable for automotive under-hood deployment | Select for cost-sensitive, low-energy protection where P600 footprint is not required |
Compared with SMBJ188A and 1.5KE188A, the 5KP188A-E3/51 provides 3.3× and 3.3× higher peak pulse power respectively, maintains tighter clamping (328 V vs. ≥360 V), and is the only AEC-Q101-qualified option - making it the sole choice for automotive-grade 188 V rail protection requiring validated reliability.
Availability
5KP188A-E3/51 is available at Aetrix Electronics and suitable for automotive ECU design, industrial motor drive development, and renewable energy inverter production requiring stable component supply and long-term lifecycle support.
Supply support for 5KP188A-E3/51 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 high-power performance.
The 5KP series was engineered specifically for high-energy transient suppression in automotive and industrial power systems, targeting replacement of crowbar circuits with robust, self-resetting clamping capability.
FAQ
What is the maximum clamping voltage of the 5KP188A-E3/51 under surge conditions?
The 5KP188A-E3/51 has a maximum clamping voltage (VC) of 328 V when subjected to its rated peak pulse current of 15.2 A (10/1000 μs waveform). This value is measured per JEDEC standards and defines the upper voltage limit imposed on protected circuitry during transient events - critical for ensuring downstream components remain within their absolute maximum ratings.
Is the 5KP188A-E3/51 suitable for automotive applications?
Yes, the 5KP188A-E3/51 is AEC-Q101 qualified and explicitly rated for automotive use. Its 175 °C maximum junction temperature, P600 package mechanical robustness, and compliance with ISO 7637-2 load dump requirements make it appropriate for engine control units, battery management systems, and ADAS power supplies where reliability under harsh thermal and electrical conditions is mandatory.
What does the "E3/51" suffix indicate in 5KP188A-E3/51?
The "E3" suffix denotes RoHS-compliant, commercial-grade construction with JESD 201 Class 1A whisker resistance; "/51" specifies the preferred packaging code - 51 indicates 800-piece tape-and-reel delivery on 13-inch diameter reels. This ordering format ensures traceability, solderability per J-STD-002, and compatibility with automated through-hole assembly processes.
How does the 5KP188A-E3/51 differ from bidirectional TVS diodes?
The 5KP188A-E3/51 is unidirectional, meaning it clamps only reverse-polarity transients and conducts forward current like a standard diode. Unlike bidirectional variants, it cannot suppress negative-going surges on AC lines or differential signals - but offers lower leakage and tighter VBR tolerance, making it optimal for DC power rail protection where polarity is fixed and forward conduction may be required during fault conditions.
Can the 5KP188A-E3/51 replace a crowbar circuit?
Yes, the 5KP188A-E3/51 was explicitly designed to replace crowbar circuits in switching power supplies. Its 5000 W surge capability and self-resetting clamping action allow it to absorb transient energy without latching, enabling automatic system recovery after overvoltage events - eliminating the need for manual fuse replacement or breaker resetting required by traditional crowbar designs.
5KP188A-E3/51 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- P600, Axial
- Series:
- TransZorb®
- Packaging:
- Bulk
- Product Status:
- Obsolete
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 188V
- Voltage - Breakdown (Min):
- 209V
- Voltage - Clamping (Max) @ Ipp:
- 328V
- Current - Peak Pulse (10/1000µs):
- 15.2A
- 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
5KP188A-E3/51 FAQ
1.How can I place an order for 5KP188A-E3/51 through Aetrix?
Please submit a Request for Quotation (RFQ) for 5KP188A-E3/51 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 5KP188A-E3/51 reliable?
The price and inventory of 5KP188A-E3/51 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 5KP188A-E3/51 is usually 5 days.
3.What payment methods are accepted for 5KP188A-E3/51?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 5KP188A-E3/51 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 5KP188A-E3/51?
5KP188A-E3/51 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 5KP188A-E3/51 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 5KP188A-E3/51?
For technical support, including 5KP188A-E3/51 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 5KP188A-E3/51 requirements.
6.How does Aetrix verify that 5KP188A-E3/51 is sourced from the original manufacturer or authorized distributors?
All 5KP188A-E3/51 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 5KP188A-E3/51 meets industry standards.
7.What is the process for return or replacement of 5KP188A-E3/51?
All 5KP188A-E3/51 units undergo pre-shipment inspection (PSI). If there is an issue with 5KP188A-E3/51, 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 5KP188A-E3/51 part is unused and in its original packaging.
Return procedure for 5KP188A-E3/51:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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