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Vishay General Semiconductor - Diodes Division 1.5KE220AHE3/51
- Part No.:
- 1.5KE220AHE3/51
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-201AA, DO-27, Axial
- Datasheet:
-
1.5KE220AHE3/51.pdf
- Description:
- TVS DIODE 185VWM 328VC 1.5KE
- Quantity:
- Payment:
- Shipping:
Inventory:2,141
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Product details
Overview
1.5KE220AHE3/51 from Vishay General Semiconductor is a uni-directional Transient Voltage Suppressor (TVS) diode designed for primary overvoltage protection of DC power rails and signal lines. It features a 209 V minimum breakdown voltage (VBR), 185 V maximum stand-off voltage (VWM), 328 V clamping voltage (VC) at 4.6 A peak pulse current, 1500 W peak pulse power rating (10/1000 µs), and AEC-Q101 qualification for automotive-grade reliability in engine control units and battery management systems.
For engineers reviewing the 1.5KE220AHE3/51 datasheet, 1.5KE220AHE3/51 pinout, 1.5KE220AHE3/51 application, or 1.5KE220AHE3/51 equivalent, this part is selected for high-energy surge suppression where fast response (<1 ns), low clamping ratio (VC/VWM ≈ 1.77), stable thermal performance up to +175 °C junction temperature, and RoHS-compliant matte tin-plated leads are required.
Technical Context
This TVS diode uses a glass-passivated silicon junction optimized for uni-directional transient suppression with a 10/1000 µs waveform. Its clamping behavior is defined by a low incremental surge resistance and a temperature coefficient of VBR of +0.108 %/°C, ensuring predictable voltage regulation across operating temperatures.
The device operates within -55 °C to +175 °C junction range, dissipates 6.5 W continuously on an infinite heatsink at TL = 75 °C, and withstands 200 A non-repetitive forward surge current (8.3 ms half-sine). Its RθJA = 75 °C/W and RθJL = 15.4 °C/W support thermal design in compact PCB layouts.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 209 V / 231 V at 1 mA test current - defines precise voltage threshold at which clamping initiates |
| VWM | 185 V - maximum continuous reverse working voltage before leakage exceeds 1 µA |
| VC @ IPPM | 328 V at 4.6 A - clamped voltage during 1500 W transient, limiting downstream stress |
| PPPM | 1500 W (10/1000 µs) - peak surge energy handling capacity without failure |
| TJ max. | +175 °C - enables operation in under-hood automotive environments and industrial power supplies |
| AEC-Q101 | Qualified - validated for automotive electronics per stress-test requirements including HTOL, TC, and HTRB |
| Package | Case Style 1.5KE - axial-leaded DO-201AD package with 0.375" lead length, UL 94 V-0 molded epoxy body |
Pinout & Package
Package: DO-201AD (Case Style 1.5KE), axial-leaded, glass-passivated silicon junction in molded epoxy body meeting UL 94 V-0 flammability rating. Matte tin-plated leads comply with J-STD-002 and JESD 22-B102 solderability standards. Cathode indicated by color band.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal | Connected to lower-potential side of protected circuit; conducts during positive transients when used in reverse-biased configuration |
| Cathode | Clamping reference terminal | Marked with color band; connected to higher-potential rail (e.g., VCC); defines polarity-sensitive clamping path to ground |
Key Features
| Feature | Design Value |
|---|---|
| Glass passivated junction | Enables stable long-term reliability and low leakage (<1 µA at VWM) across temperature and humidity |
| 1500 W peak pulse power | Handles lightning-induced surges (IEC 61000-4-5 Level 4) and inductive switching spikes without degradation |
| Sub-nanosecond response time | Clamps transients within <1 ns - faster than MOVs or gas discharge tubes, preserving sensitive ICs |
| AEC-Q101 qualification | Validated for automotive applications including powertrain, ADAS, and body electronics with zero early-life failures |
| RoHS & whisker-tested (JESD 201 Class 2) | HE3 suffix confirms compliance with environmental regulations and mitigates tin whisker risk in high-reliability assemblies |
Applications
| Automotive Power Supply Protection | Industrial PLC Input Protection |
|---|---|
|
Use Scenario: Protecting 24 V DC power inputs in engine control modules against load dump (ISO 7637-2 Pulse 5a) and alternator ripple. IC Role / Device Role: Primary shunt clamping element placed between VBAT and chassis ground. Use Value: Limits transient voltage to ≤328 V while absorbing 1500 W pulses, preventing damage to MCU power regulators and CAN transceivers. |
Use Scenario: Safeguarding digital input channels of programmable logic controllers exposed to field wiring surges in factory automation. IC Role / Device Role: Front-end overvoltage clamp on 24 V sensor interface lines. Use Value: Clamps induced transients from relay coil switching or ESD events to safe levels before reaching optocoupler or Schmitt trigger inputs. |
| Telecom DC Power Feeds | Renewable Energy Inverter Control |
|
Use Scenario: Protecting remote radio head power inputs in 48 V telecom base stations subjected to lightning-induced surges on outdoor cabling. IC Role / Device Role: Secondary surge suppressor downstream of GDT or MOV primary protection. Use Value: Provides precise, low-clamping-voltage secondary protection with fast response to complement slower primary devices. |
Use Scenario: Shielding gate driver supply rails in solar inverter power stages from voltage spikes caused by IGBT switching noise or grid faults. IC Role / Device Role: Localized clamping on isolated 15 V gate drive supplies. Use Value: Prevents false triggering or destruction of high-side gate drivers by maintaining VGS within safe limits during fast dv/dt events. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ220A | DO-214AA package (SMB), 200 W peak power, lower VC (356 V), smaller footprint | Lower energy handling; suited for board-level secondary protection rather than primary line protection | Select SMBJ220A when space-constrained layouts require surface-mount packaging and surge energy is ≤200 W |
| 1.5KE220A-E3/54 | Same electrical specs and DO-201AD package, but commercial-grade (non-AEC-Q101) and JESD 201 Class 1A whisker tested | Lacks automotive qualification; not approved for safety-critical vehicle subsystems | Choose 1.5KE220A-E3/54 for cost-sensitive industrial or consumer applications where AEC-Q101 is not mandated |
Compared with SMBJ220A and 1.5KE220A-E3/54, the 1.5KE220AHE3/51 delivers higher surge robustness (1500 W vs. 200 W) and automotive qualification-making it the only option among the three suitable for primary protection in AEC-Q101–mandated power domains.
Availability
1.5KE220AHE3/51 is available at Aetrix Electronics and suitable for automotive powertrain systems, industrial programmable logic controllers, telecom remote radio units, and renewable energy inverters requiring stable component supply across extended product lifecycles.
Supply support for 1.5KE220AHE3/51 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 high-reliability diodes, MOSFETs, and passive components for demanding industrial and automotive applications.
The 1.5KE series was engineered specifically for high-energy transient suppression in harsh environments, targeting applications where failure due to voltage surges must be eliminated-especially in automotive electronics and infrastructure power systems.
FAQ
What is the clamping voltage of the 1.5KE220AHE3/51 under maximum rated surge current?
The 1.5KE220AHE3/51 exhibits a maximum clamping voltage (VC) of 328 V when subjected to its rated peak pulse current of 4.6 A (10/1000 µs waveform). This value is measured per JEDEC standard test conditions and ensures downstream components experience no more than 328 V during worst-case transients. The clamping ratio (VC/VWM) is approximately 1.77, confirming effective voltage limiting for 185 V nominal systems.
Is the 1.5KE220AHE3/51 suitable for automotive applications?
Yes, the 1.5KE220AHE3/51 is AEC-Q101 qualified, explicitly validated for automotive use per the Vishay datasheet revision 11-Oct-16. Its qualification covers high-temperature operation up to +175 °C, robust surge endurance, and reliability testing including HTOL and temperature cycling-making it appropriate for engine control units, battery management systems, and ADAS power rails.
What does the "HE3/51" suffix indicate in 1.5KE220AHE3/51?
The "HE3" suffix denotes RoHS compliance and AEC-Q101 qualification with JESD 201 Class 2 whisker resistance, while "/51" specifies the packaging variant: 13" diameter paper tape and reel, 500 pieces per reel. This distinguishes it from alternatives like /54 (1400 pieces per reel) and confirms full traceability and automotive-grade process control for the 1.5KE220AHE3/51.
How does the 1.5KE220AHE3/51 compare to bi-directional TVS diodes like 1.5KE220CAHE3/51?
The 1.5KE220AHE3/51 is uni-directional and intended for DC line protection where polarity is fixed (e.g., VCC-to-ground), whereas 1.5KE220CAHE3/51 is bi-directional and used for AC or data-line protection. The uni-directional version offers lower leakage and tighter VBR tolerance; the bi-directional variant has symmetric clamping but higher capacitance and no cathode marking. They are not interchangeable without circuit redesign.
What is the thermal resistance of the 1.5KE220AHE3/51, and how does it affect PCB layout?
The 1.5KE220AHE3/51 has a typical junction-to-lead thermal resistance (RθJL) of 15.4 °C/W and junction-to-ambient (RθJA) of 75 °C/W. To maintain safe operation under continuous 6.5 W dissipation, PCB layout must provide adequate copper area on both leads and minimize thermal isolation-especially critical in automotive under-hood designs where ambient temperatures exceed 85 °C.
1.5KE220AHE3/51 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-201AA, DO-27, Axial
- Series:
- TransZorb®
- Packaging:
- Bulk
- Product Status:
- Obsolete
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 185V
- Voltage - Breakdown (Min):
- 209V
- Voltage - Clamping (Max) @ Ipp:
- 328V
- Current - Peak Pulse (10/1000µs):
- 4.6A
- Power - Peak Pulse:
- 1500W (1.5kW)
- 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:
- 1.5KE
1.5KE220AHE3/51 FAQ
1.How can I place an order for 1.5KE220AHE3/51 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5KE220AHE3/51 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 1.5KE220AHE3/51 reliable?
The price and inventory of 1.5KE220AHE3/51 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5KE220AHE3/51 is usually 5 days.
3.What payment methods are accepted for 1.5KE220AHE3/51?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5KE220AHE3/51 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5KE220AHE3/51?
1.5KE220AHE3/51 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5KE220AHE3/51 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 1.5KE220AHE3/51?
For technical support, including 1.5KE220AHE3/51 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5KE220AHE3/51 requirements.
6.How does Aetrix verify that 1.5KE220AHE3/51 is sourced from the original manufacturer or authorized distributors?
All 1.5KE220AHE3/51 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 1.5KE220AHE3/51 meets industry standards.
7.What is the process for return or replacement of 1.5KE220AHE3/51?
All 1.5KE220AHE3/51 units undergo pre-shipment inspection (PSI). If there is an issue with 1.5KE220AHE3/51, 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 1.5KE220AHE3/51 part is unused and in its original packaging.
Return procedure for 1.5KE220AHE3/51:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5KE220AHE3/51 Tags
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