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STMicroelectronics 1.5KE220A
- Part No.:
- 1.5KE220A
- Manufacturer:
- STMicroelectronics
- Category:
- TVS Diodes
- Package:
- DO-201AA, DO-27, Axial
- Datasheet:
-
1.5KE220A.pdf
- Description:
- TVS DIODE 188VWM 388VC DO201
- Quantity:
- Payment:
- Shipping:
Inventory:3,132
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Product details
Overview
1.5KE220A from STMicroelectronics is a unidirectional 1500 W transient voltage suppression diode in DO-201 package, designed for high-energy surge protection in power supply inputs and industrial interfaces. It features a 220 V standoff voltage (VRM), 328 V clamping voltage at 4.6 A (10/1000 µs), 175 °C maximum junction temperature, and meets IEC 61000-4-2 (30 kV contact/air) and IEC 61000-4-4 level 4 (4 kV) standards.
For engineers reviewing the 1.5KE220A datasheet, 1.5KE220A pinout, 1.5KE220A application, or 1.5KE220A equivalent, this TVS diode supports robust overvoltage protection in DC power rails, telecom line interfaces, and motor drive control circuits where precise clamping, low leakage (<1 µA at 188 V), and high-temperature reliability are critical.
Technical Context
The 1.5KE220A operates as a silicon avalanche diode with planar junction construction, enabling stable breakdown behavior up to 175 °C junction temperature and low dynamic resistance (6.04 Ω). Its unidirectional polarity defines anode-cathode conduction path during reverse-biased transients.
It delivers 1500 W peak pulse power under 10/1000 µs waveform and sustains up to 1100 W at Tj = 175 °C. Clamping voltage increases linearly with junction temperature via αT = 10.8 × 10⁻⁴/°C, requiring thermal derating in high-ambient designs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Standoff Voltage (VRM) | 220 V - Maximum continuous reverse operating voltage before breakdown |
| Breakdown Voltage (VBR) | 188–209 V at 1 mA - Confirmed avalanche initiation range for reliable triggering |
| Clamping Voltage (VCL) | 328 V at 4.6 A (10/1000 µs) - Peak voltage seen by protected circuit during rated surge |
| Peak Pulse Power (PPP) | 1500 W (10/1000 µs) - Sustained energy absorption capability without failure |
| Junction Temperature Range | −55 °C to +175 °C - Enables operation in harsh industrial and automotive under-hood environments |
| ESD Withstand (IEC 61000-4-2) | 30 kV air/contact discharge - Exceeds Level 4, eliminating need for external ESD staging |
| Dynamic Resistance (RD) | 6.04 Ω - Determines voltage rise per additional ampere beyond rated IPP |
Pinout & Package
1.5KE220A uses the axial-leaded DO-201 package (8.5–9.5 mm length, 4.8–5.3 mm diameter), with cathode identified by a band on the body. The device has two terminals: anode and cathode - no internal pins or multi-terminal configuration.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry / Reverse surge return path | Connected to ground or low-impedance reference in unidirectional clamp configuration |
| Cathode | Reverse breakdown node / Surge current sink | Connected to protected line; conducts avalanche current to anode during overvoltage event |
Key Features
| Feature | Design Value |
|---|---|
| High-temperature operation | Rated for continuous use up to 175 °C junction temperature, supporting compact heatsink-free layouts in enclosed power supplies |
| Low leakage current | <1 µA at 188 V VRM - Minimizes standby power loss and avoids false triggering in high-impedance sensing nodes |
| UL 497B certified | QVGQ2.E136224 listing - Validates suitability for primary-side telecom and industrial signal interface protection |
| Robust surge handling | Withstands 10 kW pulses (8/20 µs) - Provides margin against lightning-induced surges in outdoor equipment |
| Matte tin lead finish | Complies with J-STD-002 and JESD 22-B102 E3 - Ensures solderability and whisker resistance in automated assembly |
Applications
| AC/DC Power Supply Input Protection | Industrial PLC Digital I/O Protection |
|---|---|
Use Scenario: Protecting rectified DC bus lines in switch-mode power supplies against line transients and load dump events. IC Role / Device Role / Timing Role: Unidirectional TVS diode placed between DC+ and chassis ground to clamp positive-going surges above 220 V. Use Value: Limits voltage to ≤328 V during 4.6 A 10/1000 µs surge, preventing damage to downstream bridge rectifiers and bulk capacitors. | Use Scenario: Shielding 24 V digital input channels in programmable logic controllers from field-wiring induced surges. IC Role / Device Role / Timing Role: Standoff-rated TVS connected across input terminal and common rail to absorb fast-rising transients from relay coil switching. Use Value: Maintains functional integrity under repeated 4 kV IEC 61000-4-4 bursts while exhibiting <1 µA leakage at nominal 24 V operation. |
| Motor Drive Gate Driver Protection | Telecom Line Interface Protection |
Use Scenario: Safeguarding isolated gate drivers in three-phase inverters from Miller-induced voltage spikes during IGBT switching. IC Role / Device Role / Timing Role: Clamp diode installed between driver output and source to suppress negative-going transients exceeding −220 V. Use Value: Prevents gate oxide breakdown with 328 V clamping at 4.6 A, compatible with ±15 V gate drive rails and 175 °C ambient operation. | Use Scenario: Front-end protection of RS-485 transceivers connected to long-distance field wiring exposed to lightning coupling. IC Role / Device Role / Timing Role: Unidirectional TVS placed on A/B differential lines referenced to local ground to shunt common-mode surges. Use Value: Survives 30 kV ESD strikes (IEC 61000-4-2) and 4 kV burst noise (IEC 61000-4-4), preserving signal integrity without latch-up. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar TVS diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ220A | Same 220 V VRM and 328 V VCL, but 600 W rating (SMB package) and lower IPP (3.5 A) | Lower power handling limits use to sub-1 kV surge environments; unsuitable for 1500 W line-protection duty | Select when board space is constrained and surge threat level is ≤600 W (10/1000 µs) |
| 1N6287 | Legacy 220 V TVS with identical DO-201 package, but higher VCL (350 V) and lower Tj max (150 °C) | Limited thermal margin in sealed enclosures; reduced clamping performance increases risk to downstream ICs | Accept only for legacy redesigns where 1.5KE220A is unavailable and thermal design allows 150 °C limit |
Compared with SMBJ220A and 1N6287, the 1.5KE220A provides superior surge energy handling (1500 W vs. 600 W/1000 W), tighter clamping (328 V vs. 350 V), and extended thermal operation (175 °C vs. 150 °C), making it optimal for high-reliability industrial power and interface protection.
Availability
1.5KE220A is available at Aetrix Electronics and suitable for AC/DC power supply input protection, industrial PLC digital I/O protection, and motor drive gate driver protection requiring stable component supply and long-term lifecycle support.
Supply support for 1.5KE220A 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
STMicroelectronics is a global semiconductor leader headquartered in Geneva, Switzerland, delivering innovative analog, power, and microcontroller solutions for industrial, automotive, and consumer markets.
The 1.5KE series belongs to ST's high-power TVS portfolio, engineered specifically for robust transient suppression in mains-connected equipment, telecom infrastructure, and factory automation systems where reliability under extreme electrical stress is mandatory.
FAQ
What is the difference between 1.5KE220A and 1.5KE220CA?
The 1.5KE220A is unidirectional - it clamps only reverse-polarity transients and conducts forward current like a standard diode. The 1.5KE220CA is bidirectional, providing symmetrical clamping for both positive and negative surges, making it suitable for AC lines or differential data lines. Their standoff and clamping voltages differ slightly due to internal structure, and CA types exhibit higher capacitance.
Can 1.5KE220A be used in parallel for higher surge current handling?
No - paralleling 1.5KE220A devices is not recommended due to mismatch in dynamic resistance (6.04 Ω) and VBR tolerance (±5%), which causes uneven current sharing and premature failure of one unit. For higher current, select a single higher-rated TVS such as 3KP220A or use a TVS array with matched characteristics.
What is the maximum continuous DC voltage that can be applied across 1.5KE220A?
The maximum continuous reverse voltage is 220 V (VRM), verified at 25 °C. At elevated temperatures, VRM decreases - e.g., at 125 °C, VRM drops to approximately 205 V using the αT coefficient (10.8 × 10⁻⁴/°C). Derating curves in DS0636 Figure 3 must be consulted for system-level thermal design.
Does 1.5KE220A require a heatsink in typical applications?
No heatsink is required for transient suppression, as energy dissipation is short-duration (microseconds). However, sustained leakage current at high ambient temperature may raise junction temperature - thermal resistance (RθJA ≈ 50 °C/W) and PCB copper area (per Figure 12) must be evaluated if operating near 175 °C Tj limit for extended periods.
1.5KE220A Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Package/Case:
- DO-201AA, DO-27, Axial
- Series:
- 1.5KE, TRANSIL™
- Packaging:
- Cut Tape (CT)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 188V
- Voltage - Breakdown (Min):
- 209V
- Voltage - Clamping (Max) @ Ipp:
- 388V
- Current - Peak Pulse (10/1000µs):
- 26A (8/20µs)
- Power - Peak Pulse:
- 1500W (1.5kW)
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- 625pF @ 1MHz
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- DO-201
1.5KE220A FAQ
1.How can I place an order for 1.5KE220A through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5KE220A 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 reliable?
The price and inventory of 1.5KE220A 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 is usually 5 days.
3.What payment methods are accepted for 1.5KE220A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5KE220A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5KE220A?
1.5KE220A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5KE220A 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?
For technical support, including 1.5KE220A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5KE220A requirements.
6.How does Aetrix verify that 1.5KE220A is sourced from the original manufacturer or authorized distributors?
All 1.5KE220A 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 meets industry standards.
7.What is the process for return or replacement of 1.5KE220A?
All 1.5KE220A units undergo pre-shipment inspection (PSI). If there is an issue with 1.5KE220A, 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 part is unused and in its original packaging.
Return procedure for 1.5KE220A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5KE220A Tags
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Diodes Incorporated
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