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Taiwan Semiconductor Corporation 1.5KE22
- Part No.:
- 1.5KE22
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-201AA, DO-27, Axial
- Datasheet:
-
1.5KE22.pdf
- Description:
- 1500W, 22V, 10%, UNIDIRECTIONAL,
- Quantity:
- Payment:
- Shipping:
Inventory:6,800
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Product details
Overview
1.5KE22 from Taiwan Semiconductor is a unidirectional 1500W transient voltage suppressor (TVS) diode with a nominal breakdown voltage of 22V, minimum VBR of 19.8V at 1.0mA test current, maximum clamping voltage of 31.9V at 49A peak pulse current, and DO-201 axial package. It protects automotive and industrial power rails against ISO 7637-2 Pulse 1/2a/2b/3a/3b transients.
For engineers reviewing the 1.5KE22 datasheet, 1.5KE22 pinout, 1.5KE22 application, or 1.5KE22 equivalent, key selection criteria include its 31.9V clamping performance at 49A, 175°C junction rating, AEC-Q101 qualification availability, low dynamic impedance, and compliance with IEC 61249-2-21 halogen-free standards.
Technical Context
The 1.5KE22 operates as a unidirectional avalanche diode, triggering when reverse voltage exceeds its 19.8–24.2V breakdown range. Its fast response time (<1.0ps from 0V to VBR) enables suppression of ESD and electrical fast transients before sensitive circuitry sustains damage.
It delivers 1500W peak pulse power per 10/1000μs waveform, with thermal derating above 25°C ambient and a maximum steady-state power dissipation of 5W at 75°C lead temperature. The device exhibits <1μA leakage above 10V and a VBR temperature coefficient of 0.092%/°C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR @ IT = 1.0mA | 19.8–24.2V: Ensures reliable conduction onset within defined tolerance for overvoltage detection |
| VWM | 17.8V: Maximum continuous reverse operating voltage without significant leakage |
| VC @ IPP = 49A | 31.9V: Clamped voltage during 10/1000μs surge - defines protected circuit's worst-case stress level |
| PPK | 1500W: Peak surge energy handling capacity under standardized transient waveform |
| Junction Temp Range | −55°C to +175°C: Enables deployment in under-hood automotive and high-temp industrial environments |
| Package | DO-201: Axial-leaded, UL 94V-0 molded case with tin-plated leads compliant to J-STD-002 |
Pinout & Package
DO-201 package: axial-leaded, cylindrical epoxy body with cathode band marking. Cathode terminal is marked by a band; anode is unmarked end. Leads are pure tin-plated, solderable per J-STD-002, and meet JESD 201 Class 2 whisker resistance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Ground reference / low-side connection | Connected to system ground or low-impedance return path during clamping |
| Cathode | Protected line input / high-side connection | Connected to line being protected (e.g., 24V rail); conducts when VAK > VBR |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified option | Available as 1.5KE22H variant - validated for automotive-grade reliability and lifetime stress testing |
| Low dynamic impedance | Enables tighter clamping and lower let-through voltage during fast transients |
| ISO 7637-2 compliance | Validated against Pulse 1 (inductive load dump), Pulse 2a/2b (switching transients), and Pulse 3a/3b (ESD coupling) |
| Halogen-free construction | Meets IEC 61249-2-21 - supports RoHS-compliant and environmentally regulated designs |
Applications
| Automotive Power Rail Protection | Industrial DC Power Input |
|---|---|
Use Scenario: 12V/24V battery-connected ECUs exposed to load dump and alternator transients. IC Role / Device Role / Timing Role: Unidirectional TVS placed between power rail and ground to clamp surges before they reach PMICs or microcontrollers. Use Value: Limits voltage to ≤31.9V during 49A transients, preventing latch-up or gate oxide damage in downstream ICs. | Use Scenario: DIN-rail mounted PLC power inputs subject to switching noise and lightning-induced surges. IC Role / Device Role / Timing Role: Primary overvoltage protection stage on 24V DC input, upstream of filtering and regulation. Use Value: Absorbs 1500W pulses without failure, maintaining system uptime and reducing need for redundant protection. |
| LED Driver Surge Suppression | Motor Control Board Input Protection |
Use Scenario: Constant-current LED drivers in street lighting subjected to EFT and surge events. IC Role / Device Role / Timing Role: Parallel-connected TVS across driver input terminals to shunt transient energy away from controller ICs. Use Value: Sub-1.0ps response ensures clamping initiates before 100ns EFT bursts propagate into analog feedback paths. | Use Scenario: H-bridge motor control boards with inductive kickback from brushed DC motors. IC Role / Device Role / Timing Role: Unidirectional TVS on VCC rail to suppress flyback voltage spikes generated during MOSFET turn-off. Use Value: Withstands 200A non-repetitive forward surge (IFSM), protecting gate drivers from inductive energy reversal. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Littelfuse SMAJ22A | 600W rating, SMA package (surface-mount), lower IPP (32.4A), higher VC (35.5V) | Designed for PCB space-constrained layouts; lacks AEC-Q101 option and ISO 7637-2 validation | Select when board area is limited and surge energy is ≤600W; verify layout thermal relief for 5W steady-state dissipation |
| ON Semiconductor 1.5SMC22A | Same 1500W rating and DO-214AB package; VBR 19.8–24.2V, VC 35.0V at 43A, no AEC-Q101 variant | Compatible footprint but higher clamping voltage reduces margin for 24V systems near absolute max ratings | Use where cost is prioritized over clamping tightness; confirm 35.0V VC remains below protected IC's absolute maximum rating |
Compared with Littelfuse SMAJ22A and ON Semi 1.5SMC22A, the 1.5KE22 offers superior clamping (31.9V vs. ≥35.0V), proven ISO 7637-2 immunity, and optional AEC-Q101 qualification - making it preferred for automotive and high-reliability 24V industrial power rails.
Availability
1.5KE22 is available at Aetrix Electronics and suitable for automotive ECU protection, industrial PLC power inputs, LED driver surge suppression, and motor control board input protection requiring stable component supply and long-term lifecycle support.
Supply support for 1.5KE22 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
Taiwan Semiconductor Corporation (TSC) is a vertically integrated semiconductor manufacturer specializing in discrete power devices, TVS diodes, rectifiers, and thyristors, with global distribution and AEC-Q101 qualification capability.
The 1.5KE series was designed specifically for high-energy transient suppression in automotive and industrial 12V/24V/48V systems, balancing robust surge handling, tight clamping, and environmental compliance.
FAQ
What is the maximum clamping voltage of the 1.5KE22 under standard 10/1000μs surge conditions?
The 1.5KE22 has a maximum clamping voltage (VC) of 31.9V at 49A peak pulse current under the 10/1000μs waveform. This value is measured per JEDEC standards and defines the highest voltage that will appear across protected circuitry during a full-rated 1500W transient event. The 1.5KE22 maintains this clamping performance consistently across its operating temperature range.
Is the 1.5KE22 suitable for automotive applications requiring AEC-Q101 qualification?
Yes - the 1.5KE22H variant is AEC-Q101 qualified and explicitly listed in TSC's ordering information as meeting automotive reliability requirements. While the base 1.5KE22 is not automatically qualified, the H-suffix version undergoes stress testing per AEC-Q101 including HTOL, TC, and UHAST. Always specify 1.5KE22H for automotive designs requiring formal qualification.
How does the 1.5KE22 differ from the 1.5KE22A variant?
The 1.5KE22A has tighter VBR tolerance: 20.9–23.1V (vs. 19.8–24.2V for 1.5KE22) and slightly higher VWM (18.8V vs. 17.8V). Its clamping voltage is 30.6V at 51A, offering improved let-through voltage margin. Both share identical DO-201 packaging, thermal ratings, and surge capability - the A-suffix denotes enhanced parametric consistency for precision-sensitive designs.
Can the 1.5KE22 be used in bidirectional configurations?
No - the 1.5KE22 is a unidirectional TVS diode, intended only for DC line-to-ground protection with polarity-sensitive mounting (cathode to line, anode to ground). For bidirectional protection, TSC specifies C or CA suffix parts (e.g., 1.5KE22CA), which have symmetrical breakdown in both directions and no polarity marking. Using 1.5KE22 in reverse-biased AC applications risks permanent failure.
What is the steady-state power dissipation limit for the 1.5KE22 at elevated temperatures?
The 1.5KE22 has a steady-state power dissipation (PD) of 5W at lead temperature (TL) = 75°C, mounted on a 0.6" × 0.6" copper pad. Derating follows Fig.2 in the datasheet: PD decreases linearly to zero at 175°C junction temperature. At 100°C ambient with adequate heatsinking, usable PD is approximately 3.3W - critical for thermal design of continuously stressed protection circuits.
1.5KE22 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Package/Case:
- DO-201AA, DO-27, Axial
- Series:
- 1.5KE
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 17.8V
- Voltage - Breakdown (Min):
- 19.8V
- Voltage - Clamping (Max) @ Ipp:
- 31.9V
- Current - Peak Pulse (10/1000µs):
- 49A
- Power - Peak Pulse:
- 1500W (1.5kW)
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 175°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Through Hole
- Supplier Device Package:
- DO-201
1.5KE22 FAQ
1.How can I place an order for 1.5KE22 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5KE22 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 1.5KE22 reliable?
The price and inventory of 1.5KE22 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5KE22 is usually 5 days.
3.What payment methods are accepted for 1.5KE22?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5KE22 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5KE22?
1.5KE22 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5KE22 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 1.5KE22?
For technical support, including 1.5KE22 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5KE22 requirements.
6.How does Aetrix verify that 1.5KE22 is sourced from the original manufacturer or authorized distributors?
All 1.5KE22 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 1.5KE22 meets industry standards.
7.What is the process for return or replacement of 1.5KE22?
All 1.5KE22 units undergo pre-shipment inspection (PSI). If there is an issue with 1.5KE22, 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 1.5KE22 part is unused and in its original packaging.
Return procedure for 1.5KE22:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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