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STMicroelectronics 1.5KE22ARL
- Part No.:
- 1.5KE22ARL
- Manufacturer:
- STMicroelectronics
- Category:
- TVS Diodes
- Package:
- DO-201AA, DO-27, Axial
- Datasheet:
-
1.5KE22ARL.pdf
- Description:
- TVS DIODE 18.8VWM 39.3VC DO201
- Quantity:
- Payment:
- Shipping:
Inventory:6,725
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Product details
Overview
1.5KE22ARL from STMicroelectronics is a unidirectional transient voltage suppression (TVS) diode in DO-201 package, designed for high-energy surge protection with 1500 W peak pulse power (10/1000 µs), 22 V breakdown voltage (VBR = 20.5–22.8 V), and clamping voltage of 33.2 V at 45 A. It operates up to 175 °C junction temperature and meets IEC 61000-4-2 (30 kV contact/air discharge) and IEC 61000-4-4 level 4 (4 kV) standards, commonly deployed in AC/DC power input stages of industrial SMPS.
For engineers reviewing the 1.5KE22ARL datasheet, 1.5KE22ARL pinout, 1.5KE22ARL application, or 1.5KE22ARL equivalent, key selection criteria include verified clamping performance at 45 A, DO-201 mechanical compatibility, thermal derating above 25 °C, and compliance with UL 497B and IEC 61000-4-x immunity requirements.
Technical Context
This unidirectional TVS diode uses planar silicon junction technology to achieve low leakage (<1 µA at 17.1 V), stable VBR temperature coefficient (αT = 9.7 × 10−4/°C), and dynamic resistance of 0.278 Ω at 10/1000 µs. Its design targets fast response to ESD and surge events while maintaining robustness under repeated 10 ms surges up to 200 A (IFSM).
The device's clamping behavior is defined by VCL = 33.2 V @ IPP = 45 A (10/1000 µs), with thermal impedance optimized for DO-201 mounting on PCB copper areas ≥1 cm². Junction temperature range spans −55 °C to +175 °C, enabling use in high-ambient industrial environments without derating penalties below Tj = 125 °C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Pulse Power | 1500 W (10/1000 µs); sustains single transient energy up to 1.5 J without degradation |
| Breakdown Voltage VBR | 20.5–22.8 V @ IBR = 1 mA; ensures reliable triggering before downstream IC damage |
| Clamping Voltage VCL | 33.2 V @ IPP = 45 A; limits protected circuit voltage during 10/1000 µs surge |
| Leakage Current IRM | ≤1 µA @ VRM = 18 V; minimizes standby power loss in always-on systems |
| Junction Temperature Range | −55 °C to +175 °C; supports operation in automotive engine bays and industrial enclosures |
| ESD Withstand | 30 kV air/contact discharge per IEC 61000-4-2; exceeds Level 4 immunity requirement |
| Surge Rating | 4 kV per IEC 61000-4-4 Level 4; protects against induced fast transients on AC mains |
Pinout & Package
1.5KE22ARL is housed in a DO-201 axial-leaded package with cathode band marking. The device has two terminals: anode and cathode, with polarity critical for unidirectional surge clamping in DC-biased lines.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Surge current entry point (for reverse-biased operation) | Connected to protected line; conducts only when voltage exceeds VBR in reverse direction |
| Cathode | Surge current return path to ground/rail | Marked with band; ties to system ground or lower-potential rail to complete clamping path |
Key Features
| Feature | Design Value |
|---|---|
| High-temperature operation | Rated for continuous use at Tj = 175 °C, enabling placement near heat sources in power supplies |
| Low dynamic resistance | RD = 0.278 Ω ensures minimal VCL rise under high-current surges |
| UL 497B certification | QVGQ2.E136224 listing confirms suitability for telecom/data line protection per safety standard |
| Matte tin lead finish | Complies with J-STD-002 and JESD 22-B102 E3, ensuring solderability and whisker resistance |
| IEC 61000-4-4/4-2 compliance | Validated for both electrical fast transients and electrostatic discharge immunity testing |
Applications
| AC/DC Power Input Protection | Industrial Motor Drive Control Inputs |
|---|---|
Use Scenario: Installed across AC mains inputs or DC bus rails in switch-mode power supplies to suppress lightning-induced surges and switching transients. IC Role / Device Role / Timing Role: Unidirectional clamping device that shunts excess energy to ground during overvoltage events, protecting bridge rectifiers and PFC controllers. Use Value: Limits peak voltage to ≤33.2 V during 45 A transients, preventing gate oxide rupture in MOSFETs and overvoltage lockout in PWM ICs. | Use Scenario: Placed on digital control signal lines (e.g., enable, fault feedback) entering motor drive modules exposed to EMI from IGBT switching. IC Role / Device Role / Timing Role: Fast-response transient suppressor that clamps ESD and coupled noise before it reaches microcontroller GPIO or optocoupler inputs. Use Value: Withstands 30 kV contact discharge per IEC 61000-4-2, eliminating false triggering and latch-up in isolated control interfaces. |
| Telecom Line Interface Protection | Renewable Energy Inverter DC Link Monitoring |
Use Scenario: Mounted on secondary-side DC outputs of telecom power modules feeding base station radios and remote PHY devices. IC Role / Device Role / Timing Role: Standoff protector for 24 V/48 V distribution rails, activated only during >20.5 V transients to preserve low-power standby integrity. Use Value: Leakage <1 µA at 18 V enables uninterrupted operation of low-quiescent monitoring circuits during normal conditions. | Use Scenario: Applied across voltage sense inputs of DC link monitoring ICs in solar inverters, where high dV/dt from IGBT commutation induces spikes. IC Role / Device Role / Timing Role: Precision clamping element that holds sensed voltage within ADC input range during fast transients. Use Value: Tight VBR tolerance (±5%) and low αT ensure consistent clamping across −40 °C to +85 °C ambient, avoiding measurement drift. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1.5KE22A (ON Semiconductor) | VBR = 20.0–22.2 V; VCL = 33.0 V @ 45 A; same DO-201 package | Identical clamping performance but slightly tighter VBR min; requires revalidation of margin to protected IC abs max rating | Preferred where tighter VBR tolerance improves design margin against overclamping |
| SMBJ22A (STMicroelectronics) | Same VBR range; lower PPP = 600 W; SMC (DO-214AB) surface-mount package | Not suitable for high-energy 1500 W surges; used where board space constraints favor SMD over axial leads | Select only when surge energy is ≤600 W and PCB layout mandates SMD footprint |
Compared with 1.5KE22ARL, 1.5KE22A offers marginally improved VBR consistency but identical thermal and clamping behavior, whereas SMBJ22A trades peak power capability for compact packaging-making it viable only in lower-energy, space-constrained designs.
Availability
1.5KE22ARL is available at Aetrix Electronics and suitable for AC/DC power input protection, industrial motor drive control inputs, and telecom line interface protection requiring stable component supply and long-term lifecycle support.
Supply support for 1.5KE22ARL 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, specializing in power management, analog, MEMS, and microcontrollers for industrial, automotive, and consumer markets.
The 1.5KE series belongs to ST's high-power TVS portfolio, engineered specifically for robust front-end surge protection in industrial power conversion and harsh-environment equipment where reliability under thermal and electrical stress is critical.
FAQ
What is the maximum surge current 1.5KE22ARL can handle without failure?
1.5KE22ARL withstands a non-repetitive peak forward surge current (IFSM) of 200 A for 10 ms at Tj = 25 °C. Under 10/1000 µs waveform, its rated peak pulse current is 45 A, delivering 1500 W. Derating applies above 25 °C ambient per Figure 3 in DS0636 Rev 5.
How does the clamping voltage change with junction temperature?
VCL increases linearly with junction temperature using coefficient αT = 9.7 × 10−4/°C. At Tj = 125 °C, VCL rises to approximately 35.1 V (33.2 V × [1 + 0.00097 × (125 − 25)]), confirmed by Equation 2 in DS0636.
Is 1.5KE22ARL suitable for bidirectional signal line protection?
No - 1.5KE22ARL is unidirectional ('A' suffix) and conducts only in reverse bias. For bidirectional protection, use 1.5KE22CA, which features symmetrical clamping in both polarities and identical VBR and VCL specs in either direction.
What is the lead finish and soldering profile compliance?
1.5KE22ARL uses matte tin-plated leads compliant with J-STD-002 and JESD 22-B102 E3. Its recommended reflow profile follows IPC/JEDEC J-STD-020 MSL Level 1, with peak temperature 240–245 °C for ≤3 seconds and ramp rates per Figure 20 in DS0636 Rev 5.
1.5KE22ARL 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):
- 18.8V
- Voltage - Breakdown (Min):
- 20.9V
- Voltage - Clamping (Max) @ Ipp:
- 39.3V
- Current - Peak Pulse (10/1000µs):
- 254A (8/20µs)
- Power - Peak Pulse:
- 1500W (1.5kW)
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- 3700pF @ 1MHz
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- DO-201
1.5KE22ARL FAQ
1.How can I place an order for 1.5KE22ARL through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5KE22ARL 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 1.5KE22ARL reliable?
The price and inventory of 1.5KE22ARL are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5KE22ARL is usually 5 days.
3.What payment methods are accepted for 1.5KE22ARL?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5KE22ARL transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5KE22ARL?
1.5KE22ARL orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5KE22ARL 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 1.5KE22ARL?
For technical support, including 1.5KE22ARL datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5KE22ARL requirements.
6.How does Aetrix verify that 1.5KE22ARL is sourced from the original manufacturer or authorized distributors?
All 1.5KE22ARL 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 1.5KE22ARL meets industry standards.
7.What is the process for return or replacement of 1.5KE22ARL?
All 1.5KE22ARL units undergo pre-shipment inspection (PSI). If there is an issue with 1.5KE22ARL, 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 1.5KE22ARL part is unused and in its original packaging.
Return procedure for 1.5KE22ARL:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5KE22ARL Tags
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