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Taiwan Semiconductor Corporation 1.5KE30CA R0G
- Part No.:
- 1.5KE30CA R0G
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-201AA, DO-27, Axial
- Datasheet:
-
1.5KE30CA R0G.pdf
- Description:
- TVS DIODE 25.6VWM 41.4VC DO201
- Quantity:
- Payment:
- Shipping:
Inventory:6,011
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Product details
Overview
1.5KE30CA R0G from Taiwan Semiconductor is a bidirectional 1500W transient voltage suppressor (TVS) diode in DO-201 package, with 30V nominal breakdown voltage (VBR = 27.0–33.0V @ 1.0mA), 24.3V working stand-off voltage (VWM), and 41.4V maximum clamping voltage (VC @ IPP = 38A) for surge protection in automotive power rails and industrial control inputs.
For engineers reviewing the 1.5KE30CA R0G datasheet, 1.5KE30CA R0G pinout, 1.5KE30CA R0G application, or 1.5KE30CA R0G equivalent, this part delivers AEC-Q101-qualified bidirectional clamping, ISO 7637-2 Pulse 1/2a/2b/3a/3b compliance, sub-5ns response time, and <1µA leakage above 10V - critical for robust ESD and load-dump immunity in 12V/24V systems.
Technical Context
The 1.5KE30CA R0G is a junction-based, silicon avalanche TVS diode optimized for unidirectional or bidirectional transient suppression. Its bidirectional configuration enables symmetrical clamping across both polarities without external polarity management, and its 10/1000μs waveform rating supports high-energy surges up to 1500W peak pulse power.
It operates over –55°C to +175°C junction temperature range, features low dynamic impedance for rapid voltage limiting, and meets JESD201 Class 2 whisker resistance and UL 94V-0 flammability requirements - confirming suitability for under-hood automotive and harsh industrial environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 24.3 V - Maximum continuous reverse voltage before significant leakage; sets safe operating margin below clamping threshold in 24V systems. |
| VBR @ IT | 27.0–33.0 V @ 1.0 mA - Breakdown onset range; defines reliable turn-on threshold for transients exceeding system rail. |
| VC @ IPP | 41.4 V @ 38 A - Clamped voltage during 10/1000μs surge; ensures downstream ICs see ≤41.4V even under full 1500W stress. |
| PPK | 1500 W - Peak pulse power rating; sustains high-energy transients like ISO 7637-2 Pulse 5a (load dump) without failure. |
| IPP | 38 A - Peak impulse current capacity; determines minimum surge current handling before voltage exceeds VC. |
| TJ max | +175 °C - Maximum junction temperature; enables operation in engine compartment or enclosed industrial enclosures. |
| Leakage @ VWM | <1 µA - Ultra-low blocking leakage; avoids parasitic drain in always-on battery-connected circuits. |
Pinout & Package
Package: DO-201 axial leaded package with cathode band marking (bidirectional symmetry means no functional polarity; band indicates center tap reference per JEDEC standard). 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 terminals | No functional polarity - either end connects to protected line; clamps positive or negative transients equally. |
| Lead 1 / Lead 2 | Current-carrying terminals | Full surge current path (up to 38A); requires ≥9.5mm lead length and 16mm×16mm copper pad for rated 1500W dissipation at TL = 75°C. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and mechanical shock - required for powertrain and body control modules. |
| ISO 7637-2 compliance | Explicitly tested against Pulse 1 (inductive switch-off), Pulse 2a/2b (battery disconnect), and Pulse 3a/3b (line impedance stabilization network) - eliminates need for additional validation. |
| 5.0 ns response time (bidirectional) | Clamps transients within 5 nanoseconds of onset - faster than most microcontroller GPIO protection limits and sufficient for CAN/LIN bus line protection. |
| Halogen-free & RoHS compliant | Meets IEC 61249-2-21 and EU RoHS Directive 2011/65/EU - supports green manufacturing and export compliance without material waivers. |
| UL 94V-0 molding compound | Self-extinguishing encapsulation prevents flame propagation in fault conditions - mandatory for under-hood and safety-critical industrial housings. |
Applications
| Automotive Power Rail Protection | Industrial PLC Input Protection |
|---|---|
Use Scenario: Protecting 24V supply lines in engine control units (ECUs) from load-dump transients (ISO 7637-2 Pulse 5a) and alternator ripple. IC Role / Device Role / Timing Role: Primary clamping device placed at board-level input filter stage, shunting surge energy directly to ground before reaching DC-DC converters or MCU power pins. Use Value: Limits voltage to ≤41.4V during 1500W surges, preventing latch-up or permanent damage to 36V-rated power management ICs and ensuring ASIL-B system continuity. | Use Scenario: Safeguarding digital input channels on programmable logic controllers exposed to inductive kickback from solenoid valves and contactors. IC Role / Device Role / Timing Role: Bidirectional TVS mounted across each 24V input terminal and common, absorbing reverse-polarity switching spikes and EFT bursts. Use Value: Withstands repeated 38A pulses without degradation, maintaining ≤1µA leakage to avoid false triggering of optocoupler-based isolation stages. |
| LED Driver Overvoltage Clamp | RS-485 Transceiver Line Protection |
Use Scenario: Preventing catastrophic failure of constant-current LED drivers subjected to 12V battery line transients in commercial lighting systems. IC Role / Device Role / Timing Role: Placed between input capacitor and driver IC's VIN pin, clamping surges before they reach internal MOSFETs or gate drivers. Use Value: 41.4V clamping voltage stays well below typical LED driver IC absolute maximum ratings (often 45–60V), enabling single-stage protection without series resistors or voltage dividers. | Use Scenario: Shielding RS-485 transceivers (e.g., THVD1550) from ESD events and cable-induced surges in factory automation networks. IC Role / Device Role / Timing Role: Connected line-to-line (A–B) and line-to-ground (A–GND, B–GND) on differential bus, providing symmetrical clamping for ±15kV contact ESD per IEC 61000-4-2. Use Value: 5.0ns response ensures clamping initiates before transceiver input structures break down, preserving signal integrity and avoiding bus lockup during field maintenance. |
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 SMAJ30CA | Same DO-214AC (SMA) package, 30V VBR, but lower PPK = 400W and higher VC = 48.4V @ 8.3A; not AEC-Q101 qualified. | Suitable only for non-automotive, lower-energy environments (e.g., consumer IoT); insufficient for ISO 7637-2 Pulse 5a. | Select only if cost sensitivity outweighs automotive qualification and 1500W surge headroom. |
| ON Semiconductor 1.5SMC33CA | DO-214AB (SMC) package, 33V VBR, PPK = 1500W, VC = 53.3V @ 28.1A; AEC-Q101 qualified but higher clamping voltage. | Acceptable for 24V systems where 53.3V clamping is within downstream IC tolerance; larger SMC footprint requires PCB redesign. | Choose when board space allows SMC package and system can tolerate +11.9V higher clamping versus 1.5KE30CA R0G. |
Compared with SMAJ30CA and 1.5SMC33CA, the 1.5KE30CA R0G uniquely combines AEC-Q101 qualification, DO-201 axial form factor, 41.4V clamping, and full 1500W rating - making it the only option that satisfies automotive load-dump immunity without layout change or voltage-margin compromise.
Availability
1.5KE30CA R0G is available at Aetrix Electronics and suitable for automotive ECUs, industrial PLCs, LED driver modules, and RS-485 communication interfaces requiring stable component supply across extended temperature and high-reliability production cycles.
Supply support for 1.5KE30CA 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 thyristors, with global distribution and AEC-Q101-compliant production lines.
The 1.5KE series was designed specifically for high-energy transient suppression in automotive and industrial power systems, emphasizing rugged packaging, precise VBR tolerances, and full ISO 7637-2 compliance out-of-the-box - eliminating secondary validation effort for Tier 1 suppliers.
FAQ
What does the 'CA' suffix indicate in 1.5KE30CA R0G?
The 'CA' suffix in 1.5KE30CA R0G denotes bidirectional configuration - meaning the device provides symmetrical transient clamping for both positive and negative voltage excursions. This is distinct from 'A' (unidirectional with cathode band) and enables direct placement across differential lines or AC-coupled rails without polarity concerns. The 1.5KE30CA R0G achieves this via back-to-back zener junctions in a single DO-201 package.
Is 1.5KE30CA R0G AEC-Q101 qualified?
Yes, 1.5KE30CA R0G is explicitly AEC-Q101 qualified per the manufacturer's documentation and ordering code structure (R0G denotes green, halogen-free, AEC-Q101-compliant variant). Qualification includes stress testing for temperature cycling, high-temperature reverse bias, and mechanical shock - confirming suitability for automotive powertrain, chassis, and body electronics where reliability under thermal and vibration stress is mandatory. The 1.5KE30CA R0G data sheet cites AEC-Q101 compliance in its FEATURES section.
What is the maximum clamping voltage VC for 1.5KE30CA R0G and at what test condition?
The maximum clamping voltage VC for 1.5KE30CA R0G is 41.4 V, measured at peak impulse current IPP = 38 A under the standardized 10/1000 μs double-exponential surge waveform. This value is guaranteed across the full operating temperature range and represents the upper limit of voltage seen by protected circuitry during worst-case transient events - critical for verifying compatibility with downstream ICs rated for ≤45 V absolute maximum input.
Can 1.5KE30CA R0G be used in place of a unidirectional TVS like 1.5KE30A?
No - 1.5KE30CA R0G is bidirectional and cannot substitute for unidirectional 1.5KE30A in circuits requiring polarity-specific clamping, such as DC power rail protection where only negative transients occur. While both share identical VBR and PPK, the 1.5KE30CA R0G conducts in both directions, potentially causing unintended current paths in single-polarity designs. Use 1.5KE30CA R0G only where symmetrical clamping is required, e.g., AC lines, differential buses, or dual-rail systems.
What is the junction temperature rating and derating behavior of 1.5KE30CA R0G?
The 1.5KE30CA R0G has a maximum junction temperature TJ of +175°C and follows a linear derating curve above TA = 25°C: peak pulse power decreases by ~1.2% per °C ambient rise when mounted on a 16 mm × 16 mm copper pad. At 100°C ambient, its usable PPK drops to ~1125 W. This derating is documented in Figure 2 of the official datasheet and must be applied in thermal design for under-hood or enclosed industrial applications. The 1.5KE30CA R0G remains fully functional across the full –55°C to +175°C range.
1.5KE30CA 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):
- 25.6V
- Voltage - Breakdown (Min):
- 28.5V
- Voltage - Clamping (Max) @ Ipp:
- 41.4V
- Current - Peak Pulse (10/1000µs):
- 38A
- 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
1.5KE30CA R0G FAQ
1.How can I place an order for 1.5KE30CA R0G through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5KE30CA 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 1.5KE30CA R0G reliable?
The price and inventory of 1.5KE30CA R0G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5KE30CA R0G is usually 5 days.
3.What payment methods are accepted for 1.5KE30CA R0G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5KE30CA R0G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5KE30CA R0G?
1.5KE30CA R0G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5KE30CA 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 1.5KE30CA R0G?
For technical support, including 1.5KE30CA R0G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5KE30CA R0G requirements.
6.How does Aetrix verify that 1.5KE30CA R0G is sourced from the original manufacturer or authorized distributors?
All 1.5KE30CA 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 1.5KE30CA R0G meets industry standards.
7.What is the process for return or replacement of 1.5KE30CA R0G?
All 1.5KE30CA R0G units undergo pre-shipment inspection (PSI). If there is an issue with 1.5KE30CA 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 1.5KE30CA R0G part is unused and in its original packaging.
Return procedure for 1.5KE30CA R0G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5KE30CA R0G Tags
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Diodes Incorporated
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