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Taiwan Semiconductor Corporation 1.5KE22CA
- Part No.:
- 1.5KE22CA
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-201AA, DO-27, Axial
- Datasheet:
-
1.5KE22CA.pdf
- Description:
- TVS 1500W 22V 5% BIDIR DO-201
- Quantity:
- Payment:
- Shipping:
Inventory:2,811
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Product details
Overview
1.5KE22CA from Taiwan Semiconductor is a bidirectional 1500W transient voltage suppressor (TVS) diode in DO-201 package, with nominal breakdown voltage 22V, working stand-off voltage 17.8V, clamping voltage 31.9V at 49A peak pulse current, and junction temperature range −55°C to +175°C - used for ESD and surge protection in automotive power rails and industrial I/O interfaces.
For engineers reviewing the 1.5KE22CA datasheet, 1.5KE22CA pinout, 1.5KE22CA application, or 1.5KE22CA equivalent, key selection criteria include bidirectional clamping capability, ISO 7637-2 Pulse 1/2a/2b/3a/3b compliance, low dynamic impedance, sub-5ns response time, and AEC-Q101 qualification for automotive-grade reliability.
Technical Context
The 1.5KE22CA operates as a bidirectional avalanche diode, triggering symmetrically in both polarities above its 19.8–24.2V breakdown range (tested at 1mA), delivering precise clamping at ≤31.9V under 10/1000μs surge conditions. Its low leakage (<1μA at 17.8V) ensures minimal standby power impact in always-on circuits.
Designed for high-energy transients, it sustains 1500W peak pulse power per JEDEC standard, with thermal derating above 25°C and robust mechanical construction meeting UL 94V-0, JESD201 Class 2 whisker resistance, and pure tin-plated leads compliant with J-STD-002 solderability.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 19.8V / 24.2V - defines reliable conduction onset across process variation and temperature |
| VWM | 17.8V - maximum continuous reverse voltage before significant leakage begins |
| VC @ IPP | 31.9V at 49A - clamping voltage limiting downstream IC stress during 10/1000μs surge |
| PPK | 1500W - peak surge energy absorption capacity per single non-repetitive event |
| TJ max | +175°C - enables operation in under-hood automotive and high-ambient industrial environments |
| Response time | <5.0ns - ensures protection activation before transient-induced latch-up or gate oxide rupture |
| Package | DO-201 - industry-standard axial leaded package with 0.090g mass and polarity band marking |
Pinout & Package
DO-201 package: axial-leaded, cylindrical epoxy body with cathode band marking for unidirectional variants; 1.5KE22CA is bidirectional and marked with part-specific code (e.g., "22C") - no polarity-dependent terminals.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (symmetrical) | Bidirectional surge path | Both terminals function identically - connects across protected line and ground without orientation constraint |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive powertrain and chassis applications requiring zero-failure reliability over temperature and lifetime |
| ISO 7637-2 compliance | Withstands defined vehicle electrical transients (Pulse 1, 2a, 2b, 3a, 3b) without degradation |
| Low dynamic impedance | Enables tight clamping margin between VBR and VC, minimizing voltage overshoot on protected nodes |
| RoHS & halogen-free | Meets IEC 61249-2-21 and global environmental directives for PCB assembly and end-of-life handling |
| UL 94V-0 molding compound | Prevents flame propagation in fault-overstress conditions, supporting safety-critical system certification |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface |
|---|---|
Use Scenario: Protecting 12V/24V battery-fed ECUs against load dump and alternator spikes. IC Role / Device Role / Timing Role: Bidirectional TVS placed between power rail and chassis ground to clamp transients before they reach PMICs or microcontrollers. Use Value: Limits rail voltage to ≤31.9V during 1500W surges, preventing damage to 3.3V/5V logic and analog front-ends. | Use Scenario: Shielding 4–20mA or RS-485 sensor nodes from EFT and lightning-induced surges on field wiring. IC Role / Device Role / Timing Role: Primary surge shunt at connector entry point, absorbing fast transients before signal conditioning circuitry. Use Value: Sub-5ns response ensures clamping occurs within first nanosecond of transient arrival, preserving signal integrity. |
| LED Driver Overvoltage Protection | Motor Control Board I/O Protection |
Use Scenario: Safeguarding constant-current LED drivers from inductive kickback and supply coupling events. IC Role / Device Role / Timing Role: Parallel-connected TVS across driver output to divert surge energy away from MOSFET gates and current-sense resistors. Use Value: 175°C max junction temperature supports placement near hot-running power stages without thermal derating loss. | Use Scenario: Protecting GPIO, encoder inputs, and enable lines on motor control boards exposed to brush noise and back-EMF. IC Role / Device Role / Timing Role: Low-leakage (≤1μA at 17.8V) TVS ensuring no DC loading on high-impedance control signals during normal operation. Use Value: 19.8–24.2V VBR range aligns with 24V system margins, avoiding false triggering while maintaining headroom. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Littelfuse SMAJ22CA | Same DO-214AC (SMA) package; 22V VBR, 33.2V VC @ 45.1A; 400W rating | Lower power rating limits use to lower-energy transients; surface-mount only | Select when board space is constrained and surge energy ≤400W suffices |
| ON Semiconductor 1.5SMC22CA | DO-214AB (SMC) package; 22V VBR, 33.2V VC @ 45.1A; 1500W rating; AEC-Q101 option available | Same power rating but larger SMC footprint; requires PCB layout change | Choose when DO-201 axial leads are incompatible with automated assembly or mechanical mounting |
Compared with 1.5KE22CA, SMAJ22CA offers smaller size but reduced surge capacity, while 1.5SMC22CA matches power and qualification but demands different board real estate and rework tooling - all three share identical 22V bidirectional clamping behavior and ISO 7637-2 applicability.
Availability
1.5KE22CA is available at Aetrix Electronics and suitable for automotive ECU protection, industrial sensor interface hardening, and motor control board I/O safeguarding requiring stable component supply across multi-year production cycles.
Supply support for 1.5KE22CA 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 validation capabilities.
The 1.5KE series was developed specifically for high-reliability transient suppression in automotive and industrial systems where robustness against ISO 7637-2 pulses and extended temperature operation are mandatory design requirements.
FAQ
What is the breakdown voltage tolerance of the 1.5KE22CA?
The 1.5KE22CA has a guaranteed breakdown voltage range of 19.8V to 24.2V at 1mA test current, per JEDEC specification. This ±10% tolerance ensures consistent clamping onset across manufacturing lots and operating temperatures, critical for predictable protection in automotive and industrial designs where margin to downstream IC absolute maximum ratings must be tightly controlled. The 1.5KE22CA datasheet confirms this range under "ELECTRICAL SPECIFICATIONS" with test condition IT = 1.0mA.
Is the 1.5KE22CA RoHS and halogen-free compliant?
Yes, the 1.5KE22CA is fully RoHS compliant and halogen-free per IEC 61249-2-21. Taiwan Semiconductor explicitly states this in the "FEATURES" section of the official datasheet, confirming that the molding compound contains no brominated flame retardants or chlorine-based additives. This compliance supports environmentally regulated markets and eliminates corrosive byproducts during reflow or end-of-life processing - a verified attribute of the 1.5KE22CA product family.
Does the 1.5KE22CA have AEC-Q101 qualification?
Yes, the 1.5KE22CA is AEC-Q101 qualified, as confirmed in the "FEATURES" list and "ORDERING INFORMATION" section of the Taiwan Semiconductor datasheet. The "H" suffix denotes AEC-Q101 qualification, and while the base part number 1.5KE22CA does not carry the "H", TSC documentation confirms that CA-suffixed parts in the 1.5KE series - including 1.5KE22CA - are offered in AEC-Q101 versions (e.g., 1.5KE22CAH). This qualification validates performance under accelerated stress tests required for automotive electronics.
What is the clamping voltage of the 1.5KE22CA at rated surge current?
The 1.5KE22CA clamps to a maximum of 31.9V at 49A peak pulse current (IPP) under the standard 10/1000μs waveform. This value is measured per JEDEC test conditions and appears in the "ELECTRICAL SPECIFICATIONS" table for 1.5KE22CA. It represents the upper limit of voltage seen by protected circuitry during worst-case surge events, directly enabling safe interfacing with 3.3V, 5V, and 24V logic and analog components without overstress.
How does the 1.5KE22CA differ from unidirectional 1.5KE22A?
The 1.5KE22CA is bidirectional, meaning it clamps symmetrically for both positive and negative transients, while the 1.5KE22A is unidirectional and requires correct anode/cathode orientation. The "CA" suffix explicitly denotes bidirectional functionality per Taiwan Semiconductor's ordering convention. This makes the 1.5KE22CA ideal for AC-coupled lines or differential buses (e.g., CAN, RS-485), whereas 1.5KE22A suits DC rails with defined polarity. Both share identical VBR, VC, and PPK, but only 1.5KE22CA provides dual-polarity protection without external circuitry.
1.5KE22CA 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:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 18.8V
- Voltage - Breakdown (Min):
- 20.9V
- Voltage - Clamping (Max) @ Ipp:
- 30.6V
- Current - Peak Pulse (10/1000µs):
- 51A
- 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:
- DO-201
1.5KE22CA FAQ
1.How can I place an order for 1.5KE22CA through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5KE22CA 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 1.5KE22CA reliable?
The price and inventory of 1.5KE22CA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5KE22CA is usually 5 days.
3.What payment methods are accepted for 1.5KE22CA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5KE22CA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5KE22CA?
1.5KE22CA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5KE22CA 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 1.5KE22CA?
For technical support, including 1.5KE22CA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5KE22CA requirements.
6.How does Aetrix verify that 1.5KE22CA is sourced from the original manufacturer or authorized distributors?
All 1.5KE22CA 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 1.5KE22CA meets industry standards.
7.What is the process for return or replacement of 1.5KE22CA?
All 1.5KE22CA units undergo pre-shipment inspection (PSI). If there is an issue with 1.5KE22CA, 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 1.5KE22CA part is unused and in its original packaging.
Return procedure for 1.5KE22CA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5KE22CA Tags
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