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Vishay General Semiconductor - Diodes Division 5KP188HE3/73
- Part No.:
- 5KP188HE3/73
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- P600, Axial
- Datasheet:
-
5KP188HE3/73.pdf
- Description:
- TVS DIODE 188VWM 344VC P600
- Quantity:
- Payment:
- Shipping:
Inventory:3,441
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Product details
Overview
5KP188HE3/73 from Vishay General Semiconductor is a unidirectional TransZORB® transient voltage suppressor (TVS) diode in P600 package, designed for high-energy surge protection in power supply outputs and automotive electronics. It features 188 V stand-off voltage (VWM), 209–231 V breakdown voltage (VBR), 5000 W peak pulse power (10/1000 μs), 15.2 A peak pulse current (IPPM), and clamps to ≤328 V at rated surge. It is AEC-Q101 qualified and RoHS compliant.
For engineers reviewing the 5KP188HE3/73 datasheet, 5KP188HE3/73 pinout, 5KP188HE3/73 application, or 5KP188HE3/73 equivalent, this device is selected for high-reliability overvoltage protection where fast clamping, low incremental surge resistance, and automotive-grade qualification are required - especially in DC bus lines, motor drive power stages, and industrial SMPS outputs.
Technical Context
The 5KP188HE3/73 employs a glass-passivated P600 junction optimized for repetitive 10/1000 μs surge waveforms with 0.01% duty cycle. Its unidirectional polarity enables use in DC-biased circuits where reverse conduction must be blocked until clamping threshold is exceeded.
It operates across –55 °C to +175 °C junction temperature range and delivers stable clamping performance with <0.112 %/°C VBR temperature coefficient. The device sustains 500 A non-repetitive forward surge (IFSM) and exhibits ≤3.5 V forward voltage at 100 A, supporting robust crowbar-style fault handling without latch-up.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 188 V - Maximum continuous reverse operating voltage before clamping begins; defines safe DC bias margin in protected line. |
| VBR (min/max) | 209 V / 231 V at 5 mA - Confirmed breakdown range ensures predictable turn-on under surge; tight tolerance supports precise system-level protection design. |
| PPPM | 5000 W (10/1000 μs) - Sustains high-energy transients typical of inductive switching or lightning-induced surges on 48 V+ power rails. |
| VC @ IPPM | ≤328 V - Clamped voltage during full-rated surge; limits downstream component stress to safe levels below 350 V rating. |
| IPPM | 15.2 A - Peak current capability at rated waveform; determines minimum series impedance needed for coordination with fuses/breakers. |
| TJ max. | +175 °C - Enables operation in under-hood automotive or high-ambient industrial environments without thermal derating penalties. |
| AEC-Q101 | Qualified - Validated for automotive applications including engine control units, body electronics, and ADAS power domains. |
Pinout & Package
Package: P600 molded epoxy case with matte tin-plated leads; meets UL 94 V-0 flammability rating and J-STD-002 solderability requirements. Cathode indicated by color band.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction path | Connected to lower-potential side (e.g., ground or return) in unidirectional TVS configuration; carries surge current during clamping. |
| Cathode | Clamping reference node | Connected to protected line (e.g., +48 V rail); initiates avalanche breakdown when reverse voltage exceeds VBR. |
Key Features
| Feature | Design Value |
|---|---|
| 5000 W peak pulse power | Supports IEC 61000-4-5 Level 4 (4 kV/2 Ω) surge immunity on high-voltage DC buses without external staging. |
| AEC-Q101 qualification | Validated for automotive powertrain and chassis systems requiring zero-failure reliability over 15-year service life. |
| Low incremental surge resistance | Minimizes voltage overshoot during fast-rising transients (<1 ns rise time), improving protection margin for sensitive MOSFETs and gate drivers. |
| Glass-passivated P600 junction | Ensures long-term stability and low leakage (<2 μA at VWM) after repeated surge events, critical for battery-backed systems. |
| RoHS-compliant HE3 suffix | Meets JESD 201 Class 2 whisker resistance and automotive material compliance (Vishay Doc. 99912). |
Applications
| Automotive Power Distribution | Industrial SMPS Output Protection |
|---|---|
Use Scenario: Protecting 48 V battery-fed ECUs against load dump and alternator surge per ISO 7637-2 Pulse 5a. IC Role / Device Role / Timing Role: Unidirectional TVS clamp placed across main power input to absorb >100 J energy pulses within microseconds. Use Value: Prevents permanent damage to PMICs and microcontrollers by limiting transient voltage to ≤328 V while maintaining AEC-Q101 compliance. |
Use Scenario: Safeguarding output stage of 1 kW telecom rectifier against inductive kickback from relay-controlled loads. IC Role / Device Role / Timing Role: Primary overvoltage suppression element mounted directly at SMPS output capacitor terminals. Use Value: Eliminates need for crowbar SCR circuits by sustaining 5000 W surges and enabling automatic system recovery after fuse interruption. |
| Motor Drive DC Bus Protection | Rail-to-Rail Sensor Interface Protection |
Use Scenario: Shielding IGBT gate driver supplies in HVAC inverter modules from cross-talk and commutation spikes. IC Role / Device Role / Timing Role: Fast-response TVS placed between isolated DC/DC output and gate driver IC supply pins. Use Value: Clamps sub-100 ns spikes to <330 V before gate oxide breakdown occurs, preserving FET reliability over 10⁶ switching cycles. |
Use Scenario: Guarding analog front-end inputs of current sensors in EV battery management systems exposed to harness ESD. IC Role / Device Role / Timing Role: Secondary protection stage downstream of ESD diodes, handling higher-energy transients missed by primary clamp. Use Value: Provides 5000 W surge capacity while maintaining <2 μA leakage at 188 V, avoiding signal offset drift in precision shunt measurements. |
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 SMAJ188A | Same VWM (188 V), lower PPPM (400 W), DO-214AC package (smaller footprint, lower thermal mass). | Not AEC-Q101 qualified; suitable for commercial-grade consumer power adapters but not automotive under-hood use. | Select only for space-constrained, non-automotive designs where 400 W surge rating suffices and thermal cycling is mild. |
| ON Semiconductor 1.5KE188A | Same VWM (188 V), same P600 package, but lower PPPM (1500 W) and no AEC-Q101 qualification. | Limited to industrial control panels with infrequent surges; lacks automotive validation for sustained high-temp operation. | Choose when cost sensitivity outweighs surge margin and automotive qualification is unnecessary; verify thermal derating at TL > 75 °C. |
Compared with 5KP188HE3/73, SMAJ188A offers compact size but sacrifices 8× surge power and automotive qualification, while 1.5KE188A retains P600 form factor but provides only 30 % of the peak pulse capability and no AEC-Q101 validation - making 5KP188HE3/73 the sole option meeting both high-energy and automotive-grade requirements.
Availability
5KP188HE3/73 is available at Aetrix Electronics and suitable for automotive power distribution, industrial SMPS output protection, and motor drive DC bus protection requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for 5KP188HE3/73 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 high-reliability diodes, MOSFETs, and passive components for automotive, industrial, and computing markets.
The 5KP series was engineered specifically for high-power transient suppression in automotive and industrial power systems, emphasizing AEC-Q101 qualification, 5000 W surge resilience, and stable clamping under thermal stress.
FAQ
What is the clamping voltage of the 5KP188HE3/73 under full-rated surge conditions?
The 5KP188HE3/73 clamps to a maximum of 328 V when subjected to its rated 15.2 A peak pulse current (IPPM) with a 10/1000 μs waveform. This value is measured per JEDEC test conditions and ensures downstream components rated for 350 V or higher remain within safe operating limits during surge events. The clamping performance is guaranteed across the full –55 °C to +175 °C junction temperature range.
Is the 5KP188HE3/73 suitable for bidirectional surge protection?
No, the 5KP188HE3/73 is a unidirectional TVS diode and is not rated for bidirectional operation. Its electrical characteristics - including breakdown voltage, leakage, and clamping behavior - are specified only for reverse-biased (cathode-positive) conditions. For AC or bipolar transient protection, a dedicated bidirectional part such as 5KP188CA must be used instead of 5KP188HE3/73.
Does the HE3 suffix on 5KP188HE3/73 indicate AEC-Q101 qualification?
Yes, the HE3 suffix explicitly denotes AEC-Q101 qualification per Vishay's ordering nomenclature. This is confirmed in the mechanical data section of the 88308 datasheet, which states "Base P/NHE3 - RoHS compliant, AEC-Q101 qualified." The 5KP188HE3/73 has undergone full stress testing including temperature cycling, humidity bias HAST, and high-temperature operating life per AEC-Q101 Rev D requirements.
What is the maximum continuous power dissipation for 5KP188HE3/73 at 75 °C lead temperature?
The 5KP188HE3/73 has a maximum continuous power dissipation (PD) of 8.0 W when mounted on an infinite heatsink at a lead temperature (TL) of 75 °C, as specified in the "Maximum Ratings" table. Derating is required above 75 °C per Figure 5 in the datasheet, reaching zero dissipation at 175 °C junction temperature. This rating applies only to steady-state DC or low-frequency conditions, not transient surges.
Can the 5KP188HE3/73 replace older 5KP188A variants in existing designs?
Yes, the 5KP188HE3/73 is a direct replacement for legacy 5KP188A parts in terms of electrical specifications, package (P600), and pinout. The HE3 suffix adds AEC-Q101 qualification and enhanced whisker resistance (JESD 201 Class 2), while maintaining identical VWM, VBR, PPPM, and VC parameters. No PCB or schematic changes are required when upgrading from non-qualified 5KP188A to 5KP188HE3/73.
5KP188HE3/73 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):
- 188V
- Voltage - Breakdown (Min):
- 209V
- Voltage - Clamping (Max) @ Ipp:
- 344V
- Current - Peak Pulse (10/1000µs):
- 14.5A
- 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
5KP188HE3/73 FAQ
1.How can I place an order for 5KP188HE3/73 through Aetrix?
Please submit a Request for Quotation (RFQ) for 5KP188HE3/73 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 5KP188HE3/73 reliable?
The price and inventory of 5KP188HE3/73 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 5KP188HE3/73 is usually 5 days.
3.What payment methods are accepted for 5KP188HE3/73?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 5KP188HE3/73 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 5KP188HE3/73?
5KP188HE3/73 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 5KP188HE3/73 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 5KP188HE3/73?
For technical support, including 5KP188HE3/73 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 5KP188HE3/73 requirements.
6.How does Aetrix verify that 5KP188HE3/73 is sourced from the original manufacturer or authorized distributors?
All 5KP188HE3/73 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 5KP188HE3/73 meets industry standards.
7.What is the process for return or replacement of 5KP188HE3/73?
All 5KP188HE3/73 units undergo pre-shipment inspection (PSI). If there is an issue with 5KP188HE3/73, 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 5KP188HE3/73 part is unused and in its original packaging.
Return procedure for 5KP188HE3/73:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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