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Vishay General Semiconductor - Diodes Division 1.5KE220A-E3/51
- Part No.:
- 1.5KE220A-E3/51
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-201AA, DO-27, Axial
- Datasheet:
-
1.5KE220A-E3/51.pdf
- Description:
- TVS DIODE 185VWM 328VC 1.5KE
- Quantity:
- Payment:
- Shipping:
Inventory:2,162
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Product details
Overview
1.5KE220A-E3/51 from Vishay General Semiconductor is a unidirectional Transient Voltage Suppressor (TVS) diode designed for primary-side overvoltage protection in power rails and signal lines. It features a 209 V to 231 V breakdown voltage (VBR), 185 V maximum working voltage (VWM), 328 V clamping voltage (VC) at 4.6 A peak pulse current, 1500 W peak pulse power (10/1000 µs), and operates across –55 °C to +175 °C junction temperature range.
For engineers reviewing the 1.5KE220A-E3/51 datasheet, 1.5KE220A-E3/51 pinout, 1.5KE220A-E3/51 application, or 1.5KE220A-E3/51 equivalent, this device serves as a robust, glass-passivated, RoHS-compliant surge protector for industrial power supplies, automotive ECUs, and telecom interface circuits where fast clamping (<1 ns), low incremental surge resistance, and AEC-Q101-qualified variants are critical selection criteria.
Technical Context
This unidirectional TVS diode uses a glass-passivated silicon junction to achieve stable, repeatable breakdown behavior under transient stress. Its 10/1000 µs waveform rating supports high-energy surge immunity per IEC 61000-4-5 Level 4, with clamping response time <1 ns and thermal resistance of 15.4 °C/W (junction-to-lead).
The device complies with JEDEC DO-201AD package mechanical standards and meets UL 94 V-0 flammability requirements. Matte tin-plated leads ensure solderability per J-STD-002 and JESD 22-B102, while E3 suffix confirms JESD 201 Class 1A whisker resistance.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 209 V to 231 V - defines reliable conduction onset during overvoltage events |
| VWM | 185 V - maximum continuous reverse operating voltage without leakage degradation |
| VC @ IPPM | 328 V at 4.6 A - clamped voltage limiting downstream component stress during 1500 W transients |
| PPPM | 1500 W - peak surge energy absorption capability per 10/1000 µs waveform |
| IFSM | 200 A - single half-sine surge current handling (8.3 ms) for unidirectional operation |
| TJ max. | +175 °C - enables use in high-temperature environments like engine compartments or enclosed power modules |
| RθJL | 15.4 °C/W - low thermal resistance ensures efficient heat transfer to PCB copper or heatsink |
Pinout & Package
Package: DO-201AD (Case Style 1.5KE), axial-leaded, molded epoxy body with UL 94 V-0 rating. Cathode indicated by color band on body end.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry point during forward conduction | Connected to lower-potential side of protected circuit; used only in forward-biased surge paths |
| Cathode | Current exit point during reverse-biased clamping | Connected to higher-potential rail (e.g., VIN); absorbs transient energy into ground path |
Key Features
| Feature | Design Value |
|---|---|
| Glass passivated junction | Ensures long-term stability of VBR and leakage under thermal cycling and humidity exposure |
| 1500 W peak pulse power (10/1000 µs) | Supports IEC 61000-4-5 Level 4 surge immunity without derating in standard PCB layouts |
| Clamping response time <1 ns | Protects sensitive ICs before internal ESD structures activate, reducing cumulative damage risk |
| Low incremental surge resistance | Minimizes VC overshoot during fast-rising transients (e.g., EFT bursts), improving margin for 3.3 V/5 V logic |
| RoHS-compliant E3 suffix | Meets JESD 201 Class 1A whisker resistance, ensuring reliability in automated assembly and high-vibration environments |
Applications
| Industrial Power Supply Protection | Automotive Body Control Module |
|---|---|
Use Scenario: Protecting 24 V DC input stage of programmable logic controllers against load dump and inductive switching spikes. IC Role / Device Role / Timing Role: Primary overvoltage clamp placed between input rail and chassis ground, activated within nanoseconds of transient onset. Use Value: Limits rail voltage to ≤328 V during 1500 W surges, preventing MOSFET gate oxide rupture and regulator latch-up. | Use Scenario: Safeguarding LIN bus transceivers and microcontroller I/O pins from battery line transients in door module assemblies. IC Role / Device Role / Timing Role: Unidirectional shunt suppressor connected anode-to-ground, cathode-to-LIN line, clamping negative-going spikes. Use Value: Maintains signal integrity below 328 V clamping threshold while surviving repeated 10/1000 µs pulses per ISO 7637-2 Pulse 5a. |
| Telecom DSL Line Interface | Consumer Appliance Motor Drive |
Use Scenario: Shielding ADSL line drivers from lightning-induced surges on outdoor copper pairs. IC Role / Device Role / Timing Role: First-stage protection device mounted at RJ-11 connector, referenced to system ground. Use Value: Withstands 1500 W surges while holding clamping voltage below 328 V, preserving analog front-end dynamic range. | Use Scenario: Suppressing back-EMF spikes from brushed DC motors in washing machine control boards. IC Role / Device Role / Timing Role: Reverse-biased TVS across motor terminals, conducting only during inductive kickback events. Use Value: Absorbs 200 A single-half-sine surges (8.3 ms), preventing MCU reset and relay contact arcing. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ220A | DO-214AA package; 200 W lower PPPM (1300 W); same VBR range (209–231 V) | Smaller footprint; lower thermal mass limits sustained surge duty cycle | Select when board space is constrained and peak surge energy rarely exceeds 1300 W |
| 1.5KE220CA | Bidirectional variant; identical VBR, VC, and PPPM; no polarity marking | Required for AC-coupled or symmetric signal line protection (e.g., RS-485, CAN) | Choose only if bidirectional clamping is needed; not a drop-in replacement for unidirectional layout |
Compared with SMBJ220A and 1.5KE220CA, the 1.5KE220A-E3/51 delivers higher surge robustness in a proven axial package, supports higher thermal dissipation via lead conduction, and maintains strict unidirectional polarity-making it optimal for DC power rail protection where layout and reliability outweigh miniaturization needs.
Availability
1.5KE220A-E3/51 is available at Aetrix Electronics and suitable for industrial power supplies, automotive electronic control units, and telecom infrastructure requiring stable component supply, long-lifecycle support, and traceable sourcing.
Supply support for 1.5KE220A-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, and protection devices with emphasis on reliability, ruggedness, and automotive-grade qualification.
The 1.5KE series was engineered for high-energy transient suppression in harsh environments, targeting applications demanding >1500 W surge capability, wide temperature operation, and compliance with industrial and automotive surge immunity standards.
FAQ
What is the breakdown voltage tolerance for 1.5KE220A-E3/51?
The 1.5KE220A-E3/51 has a specified breakdown voltage (VBR) range of 209 V minimum to 231 V maximum at 1 mA test current, representing ±5% tolerance around the nominal 220 V rating. This tight distribution ensures consistent clamping behavior across production lots and supports predictable overvoltage protection design margins in systems like 24 V industrial power rails.
Does 1.5KE220A-E3/51 meet AEC-Q101 qualification?
No, the 1.5KE220A-E3/51 is a commercial-grade part. AEC-Q101 qualification applies only to variants with the HE3 suffix (e.g., 1.5KE220AHE3_B). The E3 suffix indicates RoHS compliance and JESD 201 Class 1A whisker resistance but does not imply automotive qualification. For automotive applications, specify the HE3 version and verify qualification status via Vishay's official documentation.
What is the maximum clamping voltage of 1.5KE220A-E3/51 under surge conditions?
The maximum clamping voltage (VC) of the 1.5KE220A-E3/51 is 328 V at 4.6 A peak pulse current (IPPM) using the standard 10/1000 µs waveform. This value represents the upper limit of voltage seen by downstream components during worst-case transient events and is critical for verifying safe operating margins of protected ICs and MOSFETs in designs using the 1.5KE220A-E3/51.
Can 1.5KE220A-E3/51 be used in bidirectional protection circuits?
No, the 1.5KE220A-E3/51 is strictly unidirectional. Bidirectional operation requires the CA-suffixed variant (e.g., 1.5KE220CA), which has symmetrical breakdown characteristics in both polarities. Using the unidirectional 1.5KE220A-E3/51 in AC or dual-polarity signal paths risks failure during reverse-biased transients, as it lacks reverse conduction capability beyond its rated VWM of 185 V.
What is the thermal resistance from junction to lead for 1.5KE220A-E3/51?
The typical thermal resistance from junction to lead (RθJL) for the 1.5KE220A-E3/51 is 15.4 °C/W, measured with 0.375" (9.5 mm) lead length. This low value enables effective heat transfer from the silicon die through the leads to PCB copper pours or external heatsinks, supporting reliable operation under repetitive surge conditions and extending device lifetime in thermally demanding applications such as automotive engine control modules.
1.5KE220A-E3/51 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:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 175°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- 1.5KE
1.5KE220A-E3/51 FAQ
1.How can I place an order for 1.5KE220A-E3/51 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5KE220A-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 1.5KE220A-E3/51 reliable?
The price and inventory of 1.5KE220A-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 1.5KE220A-E3/51 is usually 5 days.
3.What payment methods are accepted for 1.5KE220A-E3/51?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5KE220A-E3/51 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5KE220A-E3/51?
1.5KE220A-E3/51 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5KE220A-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 1.5KE220A-E3/51?
For technical support, including 1.5KE220A-E3/51 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5KE220A-E3/51 requirements.
6.How does Aetrix verify that 1.5KE220A-E3/51 is sourced from the original manufacturer or authorized distributors?
All 1.5KE220A-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 1.5KE220A-E3/51 meets industry standards.
7.What is the process for return or replacement of 1.5KE220A-E3/51?
All 1.5KE220A-E3/51 units undergo pre-shipment inspection (PSI). If there is an issue with 1.5KE220A-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 1.5KE220A-E3/51 part is unused and in its original packaging.
Return procedure for 1.5KE220A-E3/51:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5KE220A-E3/51 Tags
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