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Taiwan Semiconductor Corporation 1V5KE22CA
- Part No.:
- 1V5KE22CA
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-201AD, Axial
- Datasheet:
-
1V5KE22CA.pdf
- Description:
- TVS DIODE 18.8VWM 30.6VC DO201AD
- Quantity:
- Payment:
- Shipping:
Inventory:6,719
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Product details
Overview
1V5KE22CA from Taiwan Semiconductor is a bi-directional transient voltage suppressor (TVS) diode in DO-201 package, designed for high-energy surge clamping in power and signal lines. It features a 20.9–23.1 V breakdown voltage (VBR), 18.8 V reverse stand-off voltage (VRWM), 30.6 V clamping voltage (VC) at 49.0 A peak pulse current, and 1500 W peak pulse power rating at 1 ms. It protects industrial I/O interfaces and DC power rails against ESD and lightning-induced transients.
For engineers reviewing the 1V5KE22CA datasheet, 1V5KE22CA pinout, 1V5KE22CA application, or 1V5KE22CA equivalent, key selection criteria include bidirectional clamping capability, low incremental surge resistance, sub-1 µA leakage above 10 V, RoHS/halogen-free compliance, and DO-201 mechanical compatibility with standard through-hole PCB layouts.
Technical Context
The 1V5KE22CA operates as a silicon avalanche diode with glass-passivated junction, enabling fast response (<1 ns) to transient overvoltages. Its symmetrical bi-directional structure supports clamping in both polarities without external polarity management, making it suitable for AC-coupled or floating signal paths.
It delivers stable clamping performance across -55°C to +175°C junction temperature range, with thermal derating applied beyond 75°C ambient. The device meets JEDEC JESD201 Class 2 whisker resistance and UL 94V-0 flammability requirements for reliable long-term operation in harsh environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 20.9 V / 23.1 V - Ensures consistent avalanche initiation across production lots and temperature |
| VRWM | 18.8 V - Maximum continuous reverse voltage before significant leakage begins |
| VC @ IPPM | 30.6 V at 49.0 A - Clamped voltage seen by protected circuit during worst-case 1 ms surge |
| PPPM | 1500 W - Peak transient energy absorption capacity per IEEE C62.41 waveform |
| IR @ VRWM | <1 µA - Negligible standby power loss and minimal loading on sensitive analog inputs |
| TJ max | +175 °C - Enables use in under-hood automotive or high-temperature industrial enclosures |
| Package | DO-201 - Standard axial-leaded through-hole package with tin-plated leads, compatible with wave soldering |
Pinout & Package
DO-201 package: axial-leaded, cylindrical epoxy body with cathode band marking for unidirectional variants; for 1V5KE22CA (bi-directional), polarity marking is non-functional - terminals are electrically symmetrical.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (Lead 1) | Surge current entry point (either polarity) | Accepts transient current in either direction; no fixed anode/cathode function in bi-directional mode |
| Cathode (Lead 2) | Surge current exit point (either polarity) | Completes symmetrical clamping path; identical electrical behavior to Lead 1 |
Key Features
| Feature | Design Value |
|---|---|
| Glass passivated junction | Enhances long-term reliability and moisture resistance vs. non-passivated alternatives |
| 1500 W peak pulse power (1 ms) | Withstands IEC 61000-4-5 Level 4 surges (4 kV/2 Ω) on 12 V DC lines |
| Low incremental surge resistance | Minimizes VC overshoot during fast-rising transients (e.g., ESD contact discharge) |
| RoHS & halogen-free | Complies with IPC/JEDEC J-STD-020 reflow profiles and EU environmental directives |
Applications
| Industrial PLC Analog Inputs | Automotive Body Control Module (BCM) Power Rails |
|---|---|
Use Scenario: Protecting 4–20 mA current loop receivers from induced surges on factory floor wiring. IC Role / Device Role / Timing Role: Primary clamping element placed at connector entry point before signal conditioning amplifier. Use Value: Limits input voltage to ≤30.6 V during 1 ms surges up to 49 A, preventing op-amp saturation and ADC latch-up. | Use Scenario: Safeguarding 12 V supply lines feeding microcontrollers and CAN transceivers in door modules. IC Role / Device Role / Timing Role: Secondary overvoltage clamp downstream of main fuse and upstream of LDO regulators. Use Value: Absorbs load-dump energy without triggering system reset, maintaining <18.8 V nominal rail integrity during transients. |
| AC-DC Adapter Output Protection | RS-485 Transceiver Bus Lines |
Use Scenario: Suppressing switching noise and line transients on secondary-side 24 V outputs of offline SMPS. IC Role / Device Role / Timing Role: Parallel-connected TVS across output capacitor terminals to clamp overshoot during startup and fault conditions. Use Value: Prevents overvoltage stress on downstream DC-DC converters rated for 28 V absolute maximum input. | Use Scenario: Guarding differential RS-485 data lines against ESD events and cable-induced surges in building automation networks. IC Role / Device Role / Timing Role: Bi-directional clamping device placed between A/B lines and ground, leveraging symmetrical VBR tolerance. Use Value: Maintains signal integrity by clamping common-mode transients to <30.6 V while preserving >1.5 V differential margin for receiver threshold. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ22CA (Bourns) | Same VRWM/VC, but SMB package (surface-mount); 600 W PPPM | Requires PCB redesign for SMT placement; lower surge rating limits use in high-energy industrial environments | Select when board space is constrained and surge threat level is IEC 61000-4-5 Level 2 or lower |
| 1N6279A (ON Semiconductor) | Identical DO-201 package, same VBR/VC/PPPM; legacy JEDEC part number | No functional difference; same pinout, thermal profile, and reliability testing | Drop-in replacement where second-source qualification is required for supply chain resilience |
Compared with SMBJ22CA and 1N6279A, the 1V5KE22CA offers higher surge robustness than SMBJ22CA in the same voltage class and matches 1N6279A's performance while benefiting from Taiwan Semiconductor's updated halogen-free and whisker-resistant lead finish.
Availability
1V5KE22CA is available at Aetrix Electronics and suitable for industrial control systems, automotive body electronics, and power adapter designs requiring stable component supply and long-lifecycle support.
Supply support for 1V5KE22CA 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 MOSFETs, with ISO/TS 16949 and ISO 14001 certifications.
The 1V5KE series targets high-reliability transient protection in industrial, telecom, and automotive applications, emphasizing robust surge handling, extended temperature operation, and environmentally compliant packaging.
FAQ
What is the clamping voltage of the 1V5KE22CA under maximum rated surge current?
The 1V5KE22CA has a maximum clamping voltage (VC) of 30.6 V when subjected to its rated peak pulse current of 49.0 A (10/1000 µs waveform). This value is guaranteed per the manufacturer's electrical specifications table and defines the upper voltage limit imposed on protected circuits during worst-case transient events.
Is the 1V5KE22CA suitable for bidirectional signal line protection?
Yes, the 1V5KE22CA is explicitly designed as a bi-directional TVS diode (denoted by the "CA" suffix), with symmetrical breakdown characteristics in both polarities. Its VBR range (20.9–23.1 V) and VC apply equally to positive and negative transients, making it ideal for protecting AC-coupled or differential bus lines like RS-485 or USB D+/D−.
Does the 1V5KE22CA require heatsinking in typical applications?
No, the 1V5KE22CA does not require external heatsinking for single-event transient suppression, as its 1500 W rating applies only to short-duration pulses (≤1 ms). However, for repetitive surge conditions or sustained power dissipation, thermal design must consider its 5 W steady-state power rating at 75°C ambient and DO-201 package thermal resistance.
How does the 1V5KE22CA compare to unidirectional TVS diodes like 1V5KE22A?
The 1V5KE22CA differs from the unidirectional 1V5KE22A by supporting clamping in both directions and lacking a functional cathode band. While both share identical VBR, VC, and PPPM, the 1V5KE22CA eliminates polarity orientation concerns during assembly and enables protection of floating or AC-signaled nodes where voltage reversal occurs.
What is the maximum operating temperature for the 1V5KE22CA?
The 1V5KE22CA has a maximum junction temperature (TJ) rating of +175°C and a storage temperature range of -55°C to +175°C. Its DO-201 package supports reliable operation in high-temperature environments such as engine compartments or enclosed industrial drives, provided PCB thermal design maintains junction temperature within this limit.
1V5KE22CA Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Package/Case:
- DO-201AD, Axial
- Series:
- -
- 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):
- 49A
- 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-201AD
1V5KE22CA FAQ
1.How can I place an order for 1V5KE22CA through Aetrix?
Please submit a Request for Quotation (RFQ) for 1V5KE22CA 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 1V5KE22CA reliable?
The price and inventory of 1V5KE22CA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1V5KE22CA is usually 5 days.
3.What payment methods are accepted for 1V5KE22CA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1V5KE22CA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1V5KE22CA?
1V5KE22CA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1V5KE22CA 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 1V5KE22CA?
For technical support, including 1V5KE22CA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1V5KE22CA requirements.
6.How does Aetrix verify that 1V5KE22CA is sourced from the original manufacturer or authorized distributors?
All 1V5KE22CA 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 1V5KE22CA meets industry standards.
7.What is the process for return or replacement of 1V5KE22CA?
All 1V5KE22CA units undergo pre-shipment inspection (PSI). If there is an issue with 1V5KE22CA, 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 1V5KE22CA part is unused and in its original packaging.
Return procedure for 1V5KE22CA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1V5KE22CA Tags
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