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STMicroelectronics 1.5KE220ARL
- Part No.:
- 1.5KE220ARL
- Manufacturer:
- STMicroelectronics
- Category:
- TVS Diodes
- Package:
- DO-201AA, DO-27, Axial
- Datasheet:
-
1.5KE220ARL.pdf
- Description:
- TVS DIODE 188VWM 388VC DO201
- Quantity:
- Payment:
- Shipping:
Inventory:9,845
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Product details
Overview
1.5KE220ARL from STMicroelectronics is a unidirectional Transil™ transient voltage suppression (TVS) diode in DO-201 package, rated for 1500 W peak pulse power (10/1000 µs), 220 V breakdown voltage (min 188 V, typ 209 V), and clamping voltage of 328 V at 4.6 A peak pulse current. It protects MOSFETs and low-voltage ICs in DC power rails and industrial I/O interfaces.
For engineers reviewing the 1.5KE220ARL datasheet, 1.5KE220ARL pinout, 1.5KE220ARL application, or 1.5KE220ARL equivalent, key selection criteria include clamping ratio (VCL/VBR ≈ 1.57), junction-to-leads thermal resistance (20 °C/W), leakage current (<1 µA @ 176 V), and UL 497B certification for telecom surge protection.
Technical Context
This TVS diode operates as a voltage-clamping device with avalanche breakdown mechanism, triggered when reverse voltage exceeds VBR = 209–231 V. Its fast response time (<1 ns) enables suppression of ESD (IEC 61000-4-2) and lightning-induced surges (IEC 61000-4-5).
Thermal design relies on Rth(j-l) = 20 °C/W to manage 1500 W transient energy dissipation without junction failure. The DO-201 axial package supports lead soldering up to 230 °C for 10 s at 5 mm from case, with epoxy meeting UL94 V0 flammability rating.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Pulse Power | 1500 W (10/1000 µs waveform) - sustains single high-energy transients without failure |
| Breakdown Voltage | 209–231 V @ 1 mA - defines minimum overvoltage threshold before clamping activation |
| Clamping Voltage | 328 V @ 4.6 A (10/1000 µs) - limits protected circuit voltage during surge |
| Leakage Current | <1 µA @ 176 V - ensures minimal standby power loss in high-impedance bias networks |
| Junction Temp Limit | 175 °C - sets maximum allowable operating temperature under repeated surge stress |
| Thermal Resistance | 20 °C/W (junction-to-leads) - determines required PCB copper area for thermal relief |
| Capacitance | 625 pF @ 0 V, 1 MHz - impacts signal integrity in data lines above ~1 MHz |
Pinout & Package
DO-201 axial-leaded package with cathode band marking; leads are electrically symmetric but polarity-sensitive - cathode (banded end) connects to protected line, anode to ground or return path.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Reference node for clamping | Connected to system ground or low-impedance return; establishes reference for avalanche conduction |
| Cathode | Protected line connection | Banded terminal; connects to line being protected (e.g., +24 V rail); conducts surge current to ground when VAK > VBR |
Key Features
| Feature | Design Value |
|---|---|
| Low Clamping Ratio | VCL/VBR ≈ 1.57 - minimizes overvoltage stress on downstream 200 V-rated components |
| UL 497B Certification | QVGQ2.E136224 - validates suitability for primary-side telecom and industrial surge protection |
| Lead-Free Construction | ECOPACK® compliant - meets RoHS and halogen-free requirements for industrial end-equipment |
| Fast Response Time | <1 ns - suppresses ESD events before sensitive gate oxides experience damage |
Applications
| Industrial PLC I/O Protection | DC Power Rail Surge Suppression |
|---|---|
Use Scenario: 24 V digital input modules exposed to inductive switching transients from solenoids and contactors. IC Role / Device Role / Timing Role: Unidirectional TVS placed between field input and optocoupler input, clamping positive-going surges to safe levels. Use Value: Limits transient voltage to ≤328 V, protecting 5 V logic-level optocouplers and microcontroller GPIOs rated for 6 V absolute max. | Use Scenario: 200–240 V DC bus in solar inverters subjected to lightning-induced common-mode surges. IC Role / Device Role / Timing Role: Standoff-rated TVS on DC+ line referenced to chassis ground, absorbing 1500 W pulses per IEC 61000-4-5 Level 4. Use Value: Prevents bus overvoltage from exceeding 328 V, avoiding damage to 400 V-rated electrolytic capacitors and gate drivers. |
| Telecom Line Interface | Automotive Body Control Module |
Use Scenario: RS-485 communication lines in base station remote units connected to outdoor cabling. IC Role / Device Role / Timing Role: Unidirectional TVS on A/B differential pair, grounded via common-mode choke, suppressing longitudinal surges. Use Value: Maintains signal integrity by limiting capacitance to 625 pF while clamping 1 kV/500 A surges to <330 V. | Use Scenario: 12 V battery-supplied LIN bus nodes in door modules subject to load dump and jump-start transients. IC Role / Device Role / Timing Role: TVS on VBAT input, placed upstream of LDO regulator, clamping 120 V/10 ms load dump peaks. Use Value: Ensures regulated 5 V output remains stable by preventing input collapse below 188 V breakdown threshold during surge onset. |
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 | Same VBR range (209–231 V), lower PPP = 600 W, SMC package | Lower surge handling; suited for space-constrained PCBs where 1500 W rating is not required | Select when board layout favors surface-mount and surge energy is limited to ≤600 W |
| 1N5388B | Higher VBR (230–256 V), same DO-201 package, PPP = 5 W continuous only | Not a TVS - zener regulator; unsuitable for transient suppression due to low surge capability | Avoid for surge protection; only use for voltage regulation in non-transient environments |
Compared with SMBJ220A and 1N5388B, the 1.5KE220ARL delivers 2.5× higher peak pulse power in the same axial form factor, enabling robust protection in legacy through-hole designs where SMT is impractical or where full IEC 61000-4-5 Level 4 compliance is mandatory.
Availability
1.5KE220ARL is available at Aetrix Electronics and suitable for industrial PLC I/O protection, DC power rail surge suppression, and telecom line interface applications requiring stable component supply across extended product lifecycles.
Supply support for 1.5KE220ARL 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, designing and manufacturing analog, MCU, power, and sensing solutions for industrial, automotive, and consumer markets.
The 1.5KE series belongs to ST's Transil™ TVS portfolio, engineered specifically for high-energy transient suppression in harsh industrial and telecom environments where reliability under repeated surge stress is critical.
FAQ
What is the maximum clamping voltage for 1.5KE220ARL under standard test conditions?
The maximum clamping voltage is 328 V at 4.6 A peak pulse current using the 10/1000 µs waveform. This value is measured at Tamb = 25 °C with junction temperature stabilized prior to surge application, and represents the upper limit of voltage seen by protected circuitry during worst-case transient events.
Is 1.5KE220ARL bidirectional or unidirectional?
1.5KE220ARL is unidirectional, indicated by the "A" suffix (vs. "CA" for bidirectional). It conducts only in reverse bias above VBR, with anode tied to ground and cathode to the protected line - it does not suppress negative-going transients on the same node.
Can 1.5KE220ARL be used in place of a zener diode for voltage regulation?
No - this device is optimized for transient suppression, not steady-state regulation. Its leakage current is specified only up to 176 V (80% of VBR), and it lacks tight tolerance or temperature stability needed for precision regulation; use dedicated zener diodes like BZX84-C22 for that function.
What is the lead finish and soldering profile for DO-201 package?
The leads are matte tin-plated, compatible with standard SnPb and lead-free reflow profiles. Maximum lead temperature is 230 °C for 10 seconds at 5 mm from case body, per JEDEC J-STD-020; wave soldering requires preheating to 100–125 °C and dwell time <5 s in molten solder.
1.5KE220ARL Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Package/Case:
- DO-201AA, DO-27, Axial
- Series:
- 1.5KE, TRANSIL™
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- 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
1.5KE220ARL FAQ
1.How can I place an order for 1.5KE220ARL through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5KE220ARL 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 1.5KE220ARL reliable?
The price and inventory of 1.5KE220ARL are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5KE220ARL is usually 5 days.
3.What payment methods are accepted for 1.5KE220ARL?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5KE220ARL transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5KE220ARL?
1.5KE220ARL orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5KE220ARL 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 1.5KE220ARL?
For technical support, including 1.5KE220ARL datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5KE220ARL requirements.
6.How does Aetrix verify that 1.5KE220ARL is sourced from the original manufacturer or authorized distributors?
All 1.5KE220ARL 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 1.5KE220ARL meets industry standards.
7.What is the process for return or replacement of 1.5KE220ARL?
All 1.5KE220ARL units undergo pre-shipment inspection (PSI). If there is an issue with 1.5KE220ARL, 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 1.5KE220ARL part is unused and in its original packaging.
Return procedure for 1.5KE220ARL:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5KE220ARL Tags
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