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Taiwan Semiconductor Corporation 1.5KE22C
- Part No.:
- 1.5KE22C
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-201AA, DO-27, Axial
- Datasheet:
-
1.5KE22C.pdf
- Description:
- 1500W, 22V, 10%, BIDIRECTIONAL,
- Quantity:
- Payment:
- Shipping:
Inventory:7,153
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Product details
Overview
1.5KE22C 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 line interfaces.
For engineers reviewing the 1.5KE22C datasheet, 1.5KE22C pinout, 1.5KE22C application, or 1.5KE22C equivalent, key selection criteria include unidirectional/bidirectional polarity marking, DO-201 mechanical compatibility, ISO 7637-2 Pulse 1/2a/2b/3a/3b compliance, low dynamic impedance, and sub-5ns response time for fast transient suppression.
Technical Context
The 1.5KE22C is a bidirectional avalanche diode designed for high-energy transient suppression using silicon planar junction technology. It operates symmetrically in both polarities with identical VBR (19.8–24.2V), VC (31.9V), and IPP (49A) specifications, meeting ISO 7637-2 immunity requirements without polarity-dependent biasing.
Its thermal design supports continuous operation up to TJ = 175°C and derates linearly above 25°C ambient per JEDEC-standard pulse derating curve. The device exhibits <1μA leakage at 17.8V and a VBR temperature coefficient of 0.092%/°C, enabling stable clamping performance across automotive temperature ranges.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR @ IT = 1mA | 19.8–24.2V: Ensures reliable avalanche conduction onset within defined tolerance for bidirectional surge clamping |
| VWM | 17.8V: Maximum continuous reverse voltage before significant leakage; sets safe operating margin below VBR |
| VC @ IPP = 49A | 31.9V: Clamped voltage during 10/1000μs surge - defines maximum stress imposed on protected downstream circuitry |
| PPK | 1500W: Peak pulse power handling capability under standardized 10/1000μs waveform, critical for automotive load-dump immunity |
| IR @ VWM | <1μA: Ultra-low leakage ensures minimal standby power loss and signal integrity in high-impedance circuits |
| TJ Range | −55°C to +175°C: Full automotive-grade junction temperature range supporting under-hood and powertrain applications |
| Response Time | <5.0ns: Fast turn-on enables effective suppression of EFT and lightning-induced transients before IC damage occurs |
Pinout & Package
Package: DO-201 axial-leaded package with cathode band marking for unidirectional variants; 1.5KE22C is bidirectional and marked with part number only - no polarity band required. Leads are pure tin-plated, solderable per J-STD-002, and meet JESD201 Class 2 whisker resistance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode / Cathode (symmetrical) | Bidirectional avalanche junction | No functional distinction between terminals - either lead serves as anode or cathode depending on transient polarity |
| Leads (axial) | PCB mounting and thermal path | Provide mechanical attachment and conduct heat to copper pour; 0.375" lead length used for 5W steady-state rating |
Key Features
| Feature | Design Value |
|---|---|
| 1500W peak pulse power | Supports ISO 7637-2 Pulse 5a (load dump) with margin, eliminating need for external series impedance in many 12V systems |
| <5.0ns response time | Enables protection of high-speed CAN, LIN, and sensor interfaces against EFT bursts without signal distortion |
| AEC-Q101 qualified option | Validated for automotive reliability including temperature cycling, HTRB, and mechanical shock - required for powertrain ECUs |
| RoHS & halogen-free | Complies with IEC 61249-2-21 and EU RoHS Directive, enabling use in environmentally regulated automotive modules |
| Low dynamic impedance | Minimizes clamping voltage overshoot during fast-rising transients, improving protection margin for 3.3V/5V logic rails |
Applications
| Automotive Power Line Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting 12V battery-fed ECUs from load dump (ISO 7637-2 Pulse 5a) and alternator switching transients. IC Role / Device Role / Timing Role: Bidirectional TVS placed at main power input to clamp surges before DC/DC converters and microcontrollers. Use Value: Limits voltage to ≤31.9V during 49A transients, preventing latch-up or gate oxide rupture in downstream 36V-rated regulators. | Use Scenario: Shielding analog sensor outputs (e.g., pressure, temperature) from EFT coupling in factory automation wiring. IC Role / Device Role / Timing Role: Low-capacitance TVS mounted directly at connector entry point to shunt nanosecond-scale noise bursts. Use Value: Sub-5ns response prevents >100V transients from propagating into 24-bit ADC front-ends, preserving measurement accuracy. |
| LED Lighting Driver Protection | Telecom Power Supply Input |
Use Scenario: Safeguarding constant-current LED drivers from inductive kickback when driving solenoid-based dimming circuits. IC Role / Device Role / Timing Role: TVS connected across driver output to absorb energy from coil de-energization events. Use Value: 1500W surge rating handles repetitive 10/1000μs spikes without degradation, extending driver lifetime in commercial lighting fixtures. | Use Scenario: Input-stage protection for 48V telecom rectifiers exposed to lightning-induced surges on outdoor plant wiring. IC Role / Device Role / Timing Role: Primary clamping device upstream of bulk capacitance and PFC controller. Use Value: 31.9V clamping voltage ensures MOSFETs and gate drivers remain within SOA during 1kV/0.5kA surge events per IEC 61000-4-5. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Littelfuse SMAJ22CA | Same DO-214AC (SMA) package; lower PPK (400W); VC = 35.5V @ 11.3A | Not suitable for ISO 7637-2 Pulse 5a; limited to lower-energy ESD/EFT scenarios | Select when board space is constrained and surge energy is ≤400W - requires layout redesign due to different footprint |
| ON Semiconductor 1.5SMC22CA | DO-214AB (SMC) package; PPK = 1500W; VC = 33.2V @ 45.2A; higher thermal resistance | Compatible with same surge standards but requires larger PCB pad area for equivalent thermal performance | Choose when existing SMC footprint is fixed and DO-201 lead-forming is unavailable - verify thermal derating at 75°C ambient |
Compared with 1.5KE22C, SMAJ22CA offers smaller size but insufficient energy handling for automotive load dump, while 1.5SMC22CA matches power rating but demands greater board area and thermal management effort - 1.5KE22C remains optimal for axial-leaded, high-reliability 12V/24V system inputs.
Availability
1.5KE22C is available at Aetrix Electronics and suitable for automotive ECU power inputs, industrial sensor interfaces, LED driver outputs, and telecom rectifier inputs requiring stable component supply across extended temperature and high-surge environments.
Supply support for 1.5KE22C 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, and rectifiers for automotive and industrial markets.
The 1.5KE series was developed specifically for high-energy transient suppression in harsh-environment applications, emphasizing AEC-Q101 qualification, ISO 7637-2 compliance, and robust DO-201 packaging for under-hood reliability.
FAQ
What is the polarity configuration of the 1.5KE22C?
The 1.5KE22C is a bidirectional TVS diode with symmetrical avalanche characteristics in both directions. Unlike unidirectional variants (e.g., 1.5KE22A), it has no cathode band marking and functions identically regardless of terminal orientation - making it ideal for AC-coupled or polarity-agnostic protection points such as automotive CAN bus lines or dual-supply sensor interfaces.
Does the 1.5KE22C meet automotive qualification standards?
Yes, the 1.5KE22C is available in an AEC-Q101 qualified version (marked with "H" suffix, e.g., 1.5KE22CH). This variant undergoes rigorous stress testing including temperature cycling, high-temperature reverse bias, and mechanical shock - confirming suitability for engine control units, body electronics, and ADAS modules where reliability under vibration and thermal extremes is mandatory.
What is the maximum clamping voltage of the 1.5KE22C during a surge event?
The 1.5KE22C clamps to a maximum of 31.9V when subjected to its rated 49A peak pulse current (IPP) under the standard 10/1000μs waveform. This value is guaranteed across the full operating temperature range and defines the upper voltage limit imposed on protected circuitry - critical for ensuring downstream 36V-rated regulators and microcontrollers remain within absolute maximum ratings.
How does the 1.5KE22C compare to the 1.5KE22A variant?
The 1.5KE22A is a unidirectional TVS diode with cathode band marking and forward voltage drop (~3.5V), whereas the 1.5KE22C is bidirectional with no polarity marking and symmetrical breakdown in both directions. Their VBR, VC, and PPK are identical, but 1.5KE22C is selected for AC or floating-node protection, while 1.5KE22A suits DC-biased rails where forward conduction must be blocked.
What packaging options are available for the 1.5KE22C?
The 1.5KE22C is supplied in DO-201 axial package with two standard packing formats: 1,250 pieces per tape-and-reel (1.5KE22CH) and 500 pieces per ammo box (1.5KE22CHA0G). Lead finish is pure tin, compliant with J-STD-002 for solderability, and the molding compound meets UL 94V-0 flammability rating - supporting automated assembly and safety-critical applications.
1.5KE22C 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):
- 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
1.5KE22C FAQ
1.How can I place an order for 1.5KE22C through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5KE22C 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 1.5KE22C reliable?
The price and inventory of 1.5KE22C are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5KE22C is usually 5 days.
3.What payment methods are accepted for 1.5KE22C?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5KE22C transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5KE22C?
1.5KE22C orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5KE22C 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 1.5KE22C?
For technical support, including 1.5KE22C datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5KE22C requirements.
6.How does Aetrix verify that 1.5KE22C is sourced from the original manufacturer or authorized distributors?
All 1.5KE22C 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 1.5KE22C meets industry standards.
7.What is the process for return or replacement of 1.5KE22C?
All 1.5KE22C units undergo pre-shipment inspection (PSI). If there is an issue with 1.5KE22C, 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 1.5KE22C part is unused and in its original packaging.
Return procedure for 1.5KE22C:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5KE22C Tags
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