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Taiwan Semiconductor Corporation 1V5KE22A
- Part No.:
- 1V5KE22A
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-201AD, Axial
- Datasheet:
-
1V5KE22A.pdf
- Description:
- TVS DIODE 18.8VWM 30.6VC DO201AD
- Quantity:
- Payment:
- Shipping:
Inventory:7,927
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Product details
Overview
1V5KE22A from Taiwan Semiconductor is a unidirectional 1500W transient voltage suppressor (TVS) diode in DO-201 package, with a breakdown voltage of 20.9–23.1 V at 1 mA test current, reverse stand-off voltage of 18.8 V, and clamping voltage of 30.6 V at 49 A peak pulse current. It protects power rails and signal lines in industrial power supplies and automotive ECUs against ESD and lightning-induced surges.
For engineers reviewing the 1V5KE22A datasheet, 1V5KE22A pinout, 1V5KE22A application, or 1V5KE22A equivalent, key selection criteria include its 18.8 V VRWM for 24 V system compatibility, 30.6 V VC clamping margin under 49 A surge, DO-201 mechanical robustness, and <1 µA leakage above 10 V.
Technical Context
The 1V5KE22A operates as a unidirectional avalanche diode, triggered when reverse voltage exceeds its 20.9–23.1 V breakdown range. Its glass-passivated junction ensures stable VBR tolerance and low dynamic impedance during transient events.
Designed for 1 ms 10/1000 µs waveform compliance, it delivers 1500 W peak pulse power with 30.6 V clamping at 49 A, and maintains thermal stability up to TJ = 175 °C with a 0.375″ lead length derating profile.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRWM | 18.8 V - Maximum continuous reverse operating voltage before conduction begins; compatible with 24 V nominal systems. |
| VBR @ IT=1 mA | 20.9–23.1 V - Confirmed avalanche onset range; ensures reliable triggering without premature conduction. |
| VC @ IPPM=49 A | 30.6 V - Clamped voltage during full-rated 1500 W surge; provides safe overvoltage margin for downstream ICs. |
| PPPM | 1500 W - Peak pulse power rating per 1 ms waveform; meets IEC 61000-4-5 Level 4 surge immunity requirements. |
| IR @ VRWM | <1 µA - Negligible leakage at operating voltage; avoids parasitic loading on sensitive 24 V sensor interfaces. |
| TJ max | 175 °C - Maximum junction temperature; supports operation in under-hood automotive environments. |
Pinout & Package
Package: DO-201 axial-leaded case with pure tin-plated leads, UL 94V-0 molding compound, and cathode band marking for polarity identification. Weight: 0.090 g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal | Connected to ground or lower-potential rail in unidirectional clamp configuration. |
| Cathode | Reverse-biased surge input terminal | Connected to protected line (e.g., 24 V supply); conducts only during overvoltage transients. |
Key Features
| Feature | Design Value |
|---|---|
| Glass passivated junction | Ensures long-term VBR stability and resistance to humidity-induced parameter drift in industrial enclosures. |
| 1500 W peak pulse power | Withstands 49 A transient currents per IEC 61000-4-5, enabling single-device protection for 24 V CAN or LIN bus power rails. |
| Low incremental surge resistance | Minimizes voltage overshoot during fast-rising transients (e.g., inductive switch-off), improving clamping fidelity. |
| Fast response time | Sub-nanosecond turn-on enables suppression of ESD events (IEC 61000-4-2) before damage occurs to MCU I/O pins. |
Applications
| Industrial Power Supply Protection | Automotive Body Control Module (BCM) |
|---|---|
Use Scenario: 24 V DC input stage of programmable logic controller (PLC) power supply exposed to load dump and inductive kickback. IC Role / Device Role / Timing Role: Unidirectional TVS clamping device placed between input rail and chassis ground. Use Value: Limits transient voltage to ≤30.6 V during 49 A surges, preventing damage to upstream rectifier and downstream DC-DC controller. | Use Scenario: 12/24 V power feed to BCM microcontroller and CAN transceiver in passenger vehicle door module. IC Role / Device Role / Timing Role: Primary overvoltage protection element on main VBAT rail, positioned before fuse and LDO. Use Value: Survives repeated 1500 W pulses per ISO 7637-2 Pulse 1/2a/5a, maintaining system uptime without degradation. |
| LED Streetlight Driver Input | Factory Automation Sensor Interface |
Use Scenario: AC/DC front-end of outdoor LED driver subjected to lightning-induced surges on mains input. IC Role / Device Role / Timing Role: Secondary surge protection stage after MOV, providing precise clamping for downstream bridge rectifier. Use Value: 18.8 V VRWM allows clean operation during normal 230 VAC-derived 340 VDC bus, while 30.6 V VC prevents rectifier breakdown. | Use Scenario: 24 V analog input channel of industrial I/O module receiving signals from proximity sensors and solenoid drivers. IC Role / Device Role / Timing Role: Rail-to-rail TVS on sensor supply line, guarding against EFT bursts and cable discharge events. Use Value: <1 µA leakage preserves accuracy of 16-bit ADC reference paths; DO-201 form factor fits high-density PCB layouts. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ22A | DO-214AA (SMB) package; 22 V VBR min/max tighter (20.9–23.1 V same), but lower 600 W PPPM rating. | Lower power handling limits use to sub-30 A surge environments; unsuitable for ISO 7637-2 Pulse 5a. | Select SMBJ22A only for space-constrained designs where 600 W surge immunity suffices and board layout cannot accommodate DO-201 axial leads. |
| P6KE22A | Same DO-201 package; identical VBR and VRWM specs, but rated for 600 W PPPM (not 1500 W). | Lacks capability to handle repetitive 1500 W transients; requires parallel staging for equivalent energy absorption. | Choose P6KE22A only for cost-sensitive legacy designs where 600 W surge level is verified sufficient per system-level testing. |
Compared with SMBJ22A and P6KE22A, the 1V5KE22A uniquely delivers 1500 W surge capacity in the DO-201 footprint-enabling single-device compliance with automotive load-dump and industrial lightning standards without layout redesign or paralleling.
Availability
1V5KE22A is available at Aetrix Electronics and suitable for industrial power supplies, automotive body control modules, LED driver inputs, and factory automation sensor interfaces requiring stable component supply and long-term obsolescence management.
Supply support for 1V5KE22A 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 AEC-Q101 qualified production lines.
The 1V5KE series was engineered specifically for high-energy transient suppression in harsh-environment applications-including automotive, industrial, and outdoor lighting-where reliability under repeated 1500 W surges is mandatory.
FAQ
What is the maximum clamping voltage of the 1V5KE22A under full-rated surge conditions?
The 1V5KE22A exhibits a maximum clamping voltage (VC) of 30.6 V when subjected to its rated 49 A peak pulse current (IPPM), corresponding to the full 1500 W surge power at 1 ms duration. This value is measured per JEDEC standard test conditions and defines the upper voltage limit imposed on protected circuitry during worst-case transients.
Is the 1V5KE22A suitable for bidirectional surge protection?
No, the 1V5KE22A is a unidirectional TVS diode intended for DC rail protection with defined anode-cathode polarity. For bidirectional applications such as AC lines or data bus protection, the designated variant is 1V5KE22CA, which includes the "C" suffix and symmetrical breakdown characteristics in both directions.
What is the reverse leakage current specification for the 1V5KE22A at its rated VRWM?
At its reverse stand-off voltage (VRWM) of 18.8 V, the 1V5KE22A guarantees reverse leakage current (IR) of less than 1 µA at 25 °C. This ultra-low leakage preserves efficiency in always-on 24 V systems and avoids measurement errors in high-impedance sensor supply networks.
Does the 1V5KE22A meet RoHS and halogen-free compliance requirements?
Yes, the 1V5KE22A is RoHS compliant and halogen-free per IEC 61249-2-21. The molding compound is UL 94V-0 rated, and the pure tin-plated leads meet J-STD-002 solderability standards, supporting lead-free reflow assembly and environmentally regulated end markets.
What is the junction temperature range for continuous operation of the 1V5KE22A?
The 1V5KE22A supports continuous operation across a junction temperature range of –55 °C to +175 °C. Its thermal design accommodates high-ambient environments such as engine compartments and enclosed industrial drives, with derating applied beyond 75 °C ambient per the published steady-state power curve.
1V5KE22A 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:
- 1
- Bidirectional Channels:
- -
- 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
1V5KE22A FAQ
1.How can I place an order for 1V5KE22A through Aetrix?
Please submit a Request for Quotation (RFQ) for 1V5KE22A 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 1V5KE22A reliable?
The price and inventory of 1V5KE22A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1V5KE22A is usually 5 days.
3.What payment methods are accepted for 1V5KE22A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1V5KE22A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1V5KE22A?
1V5KE22A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1V5KE22A 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 1V5KE22A?
For technical support, including 1V5KE22A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1V5KE22A requirements.
6.How does Aetrix verify that 1V5KE22A is sourced from the original manufacturer or authorized distributors?
All 1V5KE22A 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 1V5KE22A meets industry standards.
7.What is the process for return or replacement of 1V5KE22A?
All 1V5KE22A units undergo pre-shipment inspection (PSI). If there is an issue with 1V5KE22A, 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 1V5KE22A part is unused and in its original packaging.
Return procedure for 1V5KE22A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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