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Taiwan Semiconductor Corporation 1.5KE22CA R0G
- Part No.:
- 1.5KE22CA R0G
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-201AA, DO-27, Axial
- Datasheet:
-
1.5KE22CA R0G.pdf
- Description:
- TVS DIODE 18.8VWM 30.6VC DO201
- Quantity:
- Payment:
- Shipping:
Inventory:4,852
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Product details
Overview
1.5KE22CA R0G 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 AEC-Q101 qualification for automotive-grade surge protection in power supply rails and interface lines.
For engineers reviewing the 1.5KE22CA R0G datasheet, 1.5KE22CA R0G pinout, 1.5KE22CA R0G application, or 1.5KE22CA R0G equivalent, this part delivers verified ISO 7637-2 Pulse 1/2a/2b/3a/3b compliance, sub-5ns response time, <1µA leakage above 10V, and UL 94V-0 molded case - critical for ESD and inductive switching transient hardening in automotive ECUs and industrial control modules.
Technical Context
The 1.5KE22CA R0G is a bidirectional avalanche diode designed to clamp transient overvoltages symmetrically in both polarities. Its 22V nominal breakdown voltage is specified at 1mA test current, with minimum VBR = 19.8V and maximum VBR = 24.2V, and it achieves clamping at 31.9V under 49A 10/1000μs surge current.
It operates across -55°C to +175°C junction temperature range, supports 1500W non-repetitive peak pulse power per JEDEC standard, and meets JESD201 Class 2 whisker resistance and RoHS/halogen-free requirements - confirming suitability for high-reliability automotive and industrial environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR @ IT = 1mA | 19.8V min / 24.2V max - defines precise voltage threshold where avalanche conduction begins under standardized test condition |
| VWM | 17.8V - maximum continuous reverse operating voltage before significant leakage; ensures safe operation below clamping threshold |
| VC @ IPP = 49A | 31.9V - clamped voltage during 10/1000μs surge; determines maximum stress imposed on protected downstream circuitry |
| PPK | 1500W - peak pulse power handling capability; enables robust protection against high-energy transients like load dump or inductive kick |
| IPP (10/1000μs) | 49A - peak impulse current rating; directly correlates with surge immunity level per ISO 7637-2 test profiles |
| TJ Range | -55°C to +175°C - extended thermal operating envelope supporting under-hood automotive and industrial ambient conditions |
| Leakage @ VWM | <1µA - ultra-low blocking leakage preserves system standby power integrity and avoids false triggering |
Pinout & Package
DO-201 axial-leaded package with cathode band marking; leads are pure tin plated, solderable per J-STD-002, and meet JESD201 Class 2 whisker resistance. Polarity is marked on body; bidirectional symmetry means no anode/cathode functional distinction in circuit use.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (unmarked end) | Transient return path (bidirectional) | Provides symmetrical low-impedance conduction path during positive or negative voltage excursions beyond VBR |
| Cathode (banded end) | Transient return path (bidirectional) | Same electrical role as anode due to bidirectional construction; band denotes polarity reference only, not functional directionality |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive electronics per stress test requirements including temperature cycling, HTRB, and ESD - enables direct use in ECU, body control, and ADAS modules |
| ISO 7637-2 compliance | Meets Pulse 1 (inductive load disconnect), Pulse 2a/2b (switching transients), and Pulse 3a/3b (line impedance stabilization network) - covers full automotive transient immunity scope |
| Fast response time | <5.0ns turn-on from 0V to VBR - ensures suppression initiates before sensitive ICs experience damaging overvoltage |
| Low dynamic impedance | Enables tight clamping ratio (VC/VBR ≈ 1.43) - minimizes let-through energy during surge events |
| UL 94V-0 molding compound | Flame-retardant encapsulation suitable for enclosed automotive and industrial enclosures requiring fire safety certification |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting 12V/24V power distribution networks in engine control units against load dump and alternator transients. IC Role / Device Role / Timing Role: Bidirectional TVS placed across input rail to clamp surges before they reach DC-DC converters and microcontrollers. Use Value: Withstands 1500W 10/1000μs pulses and meets ISO 7637-2 Pulse 1/2a/2b - eliminates need for additional filtering stages in compact ECU designs. | Use Scenario: Safeguarding analog sensor inputs (e.g., pressure, temperature) connected to CAN or LIN buses from ESD and cable discharge events. IC Role / Device Role / Timing Role: Low-leakage (≤1µA) TVS shunted between signal line and ground to absorb fast transients without loading precision front-end circuitry. Use Value: Sub-5ns response and 31.9V clamping limit ensure sensor ADC references remain undisturbed during ±8kV contact ESD per IEC 61000-4-2. |
| LED Driver Output Protection | Motor Control Feedback Line Protection |
Use Scenario: Shielding constant-current LED driver outputs from inductive kickback when driving solenoids or relays in lighting modules. IC Role / Device Role / Timing Role: Bidirectional TVS placed across driver output to clamp reverse EMF spikes generated by inductive loads. Use Value: 175°C max junction temperature and DO-201 mechanical robustness support high-temperature under-hood LED headlamp applications. | Use Scenario: Protecting Hall-effect or encoder feedback signals in BLDC motor drives from commutation noise and ground bounce. IC Role / Device Role / Timing Role: TVS deployed on differential feedback lines to suppress common-mode transients while preserving signal integrity. Use Value: Symmetrical clamping (VBR = 19.8–24.2V) ensures equal protection for both signal polarities in bidirectional position sensing circuits. |
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 22V bidirectional rating, DO-214AC (SMA) package, 400W PPK, lower surge current (22.5A) | Lower power handling limits use to lower-energy transients; unsuitable for ISO 7637-2 Pulse 1 load dump | Select only for space-constrained PCBs where 400W surge capacity suffices and DO-214AC footprint is preferred |
| ON Semiconductor 1.5SMC22CA | Same 22V bidirectional rating, DO-214AB (SMC) package, 1500W PPK, identical VC = 31.9V, but no AEC-Q101 qualification | Lacks automotive qualification; requires additional reliability validation for ECU deployment | Acceptable for industrial controls where AEC-Q101 is not mandated, but not drop-in for automotive OEM designs |
Compared with 1.5KE22CA R0G, SMAJ22CA offers smaller footprint but sacrifices 63% peak power handling and fails ISO 7637-2 Pulse 1 compliance; 1.5SMC22CA matches power and clamping performance but lacks AEC-Q101 validation - making 1.5KE22CA R0G the sole option meeting full automotive transient immunity and qualification requirements in DO-201 form factor.
Availability
1.5KE22CA R0G is available at Aetrix Electronics and suitable for automotive electronic control units, industrial sensor interfaces, LED driver outputs, and motor control feedback lines requiring stable component supply with guaranteed long-term manufacturability and traceable sourcing.
Supply support for 1.5KE22CA R0G 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 global distribution and AEC-Q101-compliant product lines.
The 1.5KE series was developed specifically for high-energy transient suppression in automotive and industrial systems, emphasizing rugged DO-201 packaging, wide temperature operation, and full ISO 7637-2 compliance - targeting ECU, body electronics, and powertrain subsystems.
FAQ
What is the clamping voltage of the 1.5KE22CA R0G under standard surge conditions?
The 1.5KE22CA R0G clamps to 31.9V when subjected to a 10/1000μs surge waveform with peak current of 49A. This value is measured per JEDEC standards and represents the maximum voltage seen by protected circuitry during a defined transient event. The clamping voltage remains stable across its rated junction temperature range (-55°C to +175°C), ensuring consistent protection performance in demanding under-hood or industrial environments. This specification is confirmed in Taiwan Semiconductor's official 1.5KE Series datasheet revision O2104.
Is the 1.5KE22CA R0G suitable for automotive applications requiring AEC-Q101 qualification?
Yes, the 1.5KE22CA R0G is explicitly AEC-Q101 qualified, as documented in Taiwan Semiconductor's 1.5KE Series datasheet. It has passed all required stress tests including high-temperature reverse bias (HTRB), temperature cycling, and electrostatic discharge (ESD), making it suitable for use in automotive electronic control units, body control modules, and ADAS subsystems. The "CA" suffix denotes bidirectional configuration, and the "R0G" ordering code confirms green (halogen-free) compound and tape-and-reel packaging - both aligned with automotive manufacturing requirements.
How does the 1.5KE22CA R0G differ from unidirectional variants like 1.5KE22A R0G?
The 1.5KE22CA R0G is bidirectional, meaning it provides symmetrical transient suppression for both positive and negative voltage excursions, with identical breakdown and clamping characteristics in either polarity. In contrast, the unidirectional 1.5KE22A R0G functions only in reverse-bias mode and requires correct orientation relative to circuit polarity. The "C" in "CA" explicitly indicates bidirectional capability, enabling simplified placement in AC-coupled or floating signal paths - such as CAN bus lines or differential sensor interfaces - where polarity reversal must be accommodated without redesign.
What is the maximum steady-state power dissipation for the 1.5KE22CA R0G at elevated temperatures?
The 1.5KE22CA R0G has a steady-state power dissipation (PD) rating of 5W when mounted on a 0.6" × 0.6" copper pad at lead temperature (TL) = 75°C. This value derates linearly above 25°C ambient per the datasheet's Fig.2 curve; at 100°C ambient, usable PD drops to approximately 3.2W. Unlike its 1500W peak pulse rating, this 5W limit applies only to continuous DC or low-frequency power dissipation - not transient suppression - and must be respected in thermal design to avoid junction overheating and parametric drift.
Does the 1.5KE22CA R0G meet international ESD and surge immunity standards?
Yes, the 1.5KE22CA R0G meets ISO 7637-2 for automotive transient immunity (Pulse 1, 2a, 2b, 3a, 3b) and complies with RoHS and halogen-free requirements per IEC 61249-2-21. While not directly certified to IEC 61000-4-2 (ESD) or IEC 61000-4-4 (EFT), its <5ns response time, low clamping voltage, and 1500W surge capability enable system-level compliance when properly implemented - as validated in Taiwan Semiconductor's application notes for automotive power rail and interface protection. Its performance aligns with typical ESD protection requirements for ±8kV contact discharge scenarios.
1.5KE22CA R0G 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:
- Discontinued at Digi-Key
- 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 R0G FAQ
1.How can I place an order for 1.5KE22CA R0G through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5KE22CA R0G 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 R0G reliable?
The price and inventory of 1.5KE22CA R0G 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 R0G is usually 5 days.
3.What payment methods are accepted for 1.5KE22CA R0G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5KE22CA R0G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5KE22CA R0G?
1.5KE22CA R0G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5KE22CA R0G 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 R0G?
For technical support, including 1.5KE22CA R0G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5KE22CA R0G requirements.
6.How does Aetrix verify that 1.5KE22CA R0G is sourced from the original manufacturer or authorized distributors?
All 1.5KE22CA R0G 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 R0G meets industry standards.
7.What is the process for return or replacement of 1.5KE22CA R0G?
All 1.5KE22CA R0G units undergo pre-shipment inspection (PSI). If there is an issue with 1.5KE22CA R0G, 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 R0G part is unused and in its original packaging.
Return procedure for 1.5KE22CA R0G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5KE22CA R0G Tags
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