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Taiwan Semiconductor Corporation 1.5KE24CA R0G
- Part No.:
- 1.5KE24CA R0G
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-201AA, DO-27, Axial
- Datasheet:
-
1.5KE24CA R0G.pdf
- Description:
- TVS DIODE 20.5VWM 33.2VC DO201
- Quantity:
- Payment:
- Shipping:
Inventory:2,509
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Product details
Overview
1.5KE24CA R0G from Taiwan Semiconductor is a bidirectional 1500W transient voltage suppressor (TVS) diode in DO-201 package, with 24V nominal breakdown voltage (VBR min/max = 21.6V/26.4V at 1.0mA), 19.4V working stand-off voltage (VWM), and 34.7V maximum clamping voltage (VC) at 45A peak pulse current. It protects automotive and industrial power rails against ISO 7637-2 Pulse 1/2a/2b/3a/3b transients.
For engineers reviewing the 1.5KE24CA R0G datasheet, 1.5KE24CA R0G pinout, 1.5KE24CA R0G application, or 1.5KE24CA R0G equivalent, key selection criteria include bidirectional clamping capability, AEC-Q101 qualification (R0G suffix indicates green, RoHS-compliant, halogen-free DO-201 packaging), low dynamic impedance, and sub-5ns response time for fast EFT/ESD immunity design.
Technical Context
The 1.5KE24CA R0G operates as a bidirectional avalanche diode, symmetrically clamping voltage surges above ±21.6V in both polarities. Its 1500W peak pulse power rating (10/1000μs waveform) and 34.7V clamping voltage at 45A ensure robust protection of 24V systems without overstressing downstream ICs.
Designed for automotive-grade reliability, it meets ISO 7637-2 immunity standards and features <1μA leakage at 19.4V, 0.094%/°C VBR temperature coefficient, and UL 94V-0 molding compound - enabling use in harsh under-hood environments without derating concerns up to TJ = 175°C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 21.6V / 26.4V at IT = 1.0mA - defines precise voltage threshold where avalanche conduction begins in both directions |
| VWM | 19.4V - maximum continuous reverse voltage before significant leakage; sets safe operating margin below VBR |
| VC @ IPP | 34.7V at IPP = 45A - clamped voltage seen by protected circuit during worst-case surge; limits stress on downstream components |
| PPK | 1500W - peak transient energy handling capacity per 10/1000μs waveform; supports high-energy load dump events |
| TJ max | +175°C - maximum junction temperature; enables operation in engine compartment or industrial enclosures without active cooling |
| ID @ VWM | <1μA - ultra-low leakage ensures minimal standby power loss and no false triggering in low-power systems |
| Response time | <5.0ns - enables effective suppression of fast electrical fast transients (EFT) and ESD events before damage occurs |
Pinout & Package
DO-201 axial-leaded package with cathode band marking for polarity identification; leads are pure tin plated, solderable per J-STD-002, and meet JESD 201 Class 2 whisker resistance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry point in forward bias; common terminal in bidirectional configuration | Connected to system ground or low-side reference; forms symmetrical clamping path with cathode |
| Cathode | Current exit point in forward bias; marked with band; common terminal in bidirectional configuration | Connected to protected line (e.g., 24V rail); clamps positive and negative transients relative to anode |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC-coupled or floating DC lines without polarity constraints |
| AEC-Q101 qualified | Validated for automotive electronics including powertrain, body control, and ADAS modules |
| ISO 7637-2 compliance | Guarantees immunity to standardized vehicle-level transients (Pulse 1, 2a, 2b, 3a, 3b) |
| Halogen-free & RoHS | Meets IEC 61249-2-21 and EU RoHS directives for environmentally compliant manufacturing |
| UL 94V-0 molding | Self-extinguishing encapsulation prevents fire propagation in overvoltage fault conditions |
Applications
| Automotive Power Rail Protection | Industrial PLC I/O Protection |
|---|---|
Use Scenario: Suppressing load dump and jump-start transients on 24V battery-fed ECUs in commercial vehicles. IC Role / Device Role / Timing Role: Primary overvoltage clamp placed directly across input terminals of power management ICs or microcontrollers. Use Value: Limits voltage excursion to ≤34.7V during 1500W surges, preventing latch-up or gate oxide rupture in 36V-rated regulators. | Use Scenario: Protecting analog input channels of programmable logic controllers exposed to field wiring inductive kickback. IC Role / Device Role / Timing Role: Front-end transient suppressor on signal conditioning front-end, upstream of precision ADCs and op-amps. Use Value: Clamps fast-rising spikes (<5ns response) to safe levels while maintaining <1μA leakage for accurate 16-bit sensor measurements. |
| LED Driver Surge Suppression | Telecom Power Interface Protection |
Use Scenario: Safeguarding constant-current LED drivers in street lighting against lightning-induced surges on long feeder lines. IC Role / Device Role / Timing Role: Bidirectional shunt device across driver input, absorbing differential-mode transients between line and neutral. Use Value: Withstands repeated 10/1000μs surges up to 1500W without degradation, extending driver lifetime in outdoor deployments. | Use Scenario: Shielding PoE-powered equipment interfaces from induced surges on Ethernet cables routed near AC mains. IC Role / Device Role / Timing Role: Common-mode TVS pair (two devices) across data pairs and power conductors in IEEE 802.3af/at-compliant designs. Use Value: Symmetric 21.6–26.4V breakdown ensures balanced clamping on differential signals without skew or DC offset introduction. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ24CA | 600W rating, SMA package (smaller footprint, lower thermal mass), VBR = 26.7–29.5V, VC = 38.9V @ 15.4A | Lower surge capacity; suited for space-constrained consumer or telecom boards, not heavy-duty automotive load dump | Select SMBJ24CA only when board area is critical and peak surge energy remains ≤600W |
| 1.5SMC24CA | Same 1500W rating and DO-214AB package, VBR = 26.7–29.5V, VC = 38.9V @ 38.8A, higher VF in forward conduction | Surface-mount alternative with comparable clamping but different thermal profile and PCB assembly requirements | Choose 1.5SMC24CA for automated SMT production where through-hole DO-201 is incompatible with assembly flow |
Compared with SMBJ24CA and 1.5SMC24CA, the 1.5KE24CA R0G delivers superior thermal robustness in high-ambient environments due to its axial DO-201 package and 175°C TJ rating, making it preferred for under-hood automotive and industrial power supply inputs where sustained surge duty cycles occur.
Availability
1.5KE24CA R0G is available at Aetrix Electronics and suitable for automotive electronics, industrial PLCs, LED lighting systems, and telecom power interfaces requiring stable component supply and long-term lifecycle support.
Supply support for 1.5KE24CA 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 for automotive, industrial, and computing markets.
The 1.5KE series was developed specifically for high-reliability transient suppression in automotive power systems and industrial control equipment, emphasizing AEC-Q101 qualification, ISO 7637-2 compliance, and extended temperature operation.
FAQ
What does the 'CA' suffix mean in 1.5KE24CA R0G?
The 'CA' suffix in 1.5KE24CA R0G denotes a bidirectional configuration - meaning the device provides symmetrical transient suppression for both positive and negative voltage excursions. This distinguishes it from unidirectional variants (e.g., 1.5KE24A), which clamp only in one polarity and require correct orientation in-circuit. The 1.5KE24CA R0G is ideal for protecting floating or AC-coupled nodes where polarity reversal is possible.
Is 1.5KE24CA R0G AEC-Q101 qualified?
Yes, 1.5KE24CA R0G is AEC-Q101 qualified. The 'R0G' ordering code indicates RoHS-compliant, halogen-free, green compound packaging and full AEC-Q101 stress testing - including high-temperature operating life, temperature cycling, and ESD robustness - validating its suitability for automotive electronic control units, body electronics, and ADAS subsystems.
What is the maximum clamping voltage of 1.5KE24CA R0G at rated surge current?
The maximum clamping voltage (VC) of 1.5KE24CA R0G is 34.7V at 45A peak pulse current (IPP), measured under the standard 10/1000μs double-exponential surge waveform. This value represents the highest voltage the protected circuit will experience during a full-rated 1500W transient event, ensuring compatibility with 36V-tolerant power management ICs and microcontrollers.
Can 1.5KE24CA R0G replace 1.5KE24A in a design?
No - 1.5KE24CA R0G cannot directly replace 1.5KE24A because they differ fundamentally in polarity: 1.5KE24A is unidirectional (anode-cathode asymmetry), while 1.5KE24CA R0G is bidirectional (symmetric conduction). Substituting without circuit review risks incorrect clamping behavior, especially in DC-biased rails. Use 1.5KE24CA R0G only where bidirectional protection is explicitly required and layout accommodates non-polarized placement.
What is the thermal resistance junction-to-ambient for 1.5KE24CA R0G in DO-201 package?
The 1.5KE24CA R0G in DO-201 package has a typical junction-to-ambient thermal resistance (RθJA) of 50°C/W when mounted on a 0.6" × 0.6" (16mm × 16mm) copper pad, per JEDEC standards. This value supports reliable operation at full 1500W surge ratings only for short-duration pulses; steady-state power dissipation is limited to 5W at TL = 75°C, as specified in the absolute maximum ratings table for the 1.5KE24CA R0G.
1.5KE24CA 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):
- 20.5V
- Voltage - Breakdown (Min):
- 22.8V
- Voltage - Clamping (Max) @ Ipp:
- 33.2V
- Current - Peak Pulse (10/1000µs):
- 47A
- 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
1.5KE24CA R0G FAQ
1.How can I place an order for 1.5KE24CA R0G through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5KE24CA 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 1.5KE24CA R0G reliable?
The price and inventory of 1.5KE24CA R0G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5KE24CA R0G is usually 5 days.
3.What payment methods are accepted for 1.5KE24CA R0G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5KE24CA R0G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5KE24CA R0G?
1.5KE24CA R0G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5KE24CA 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 1.5KE24CA R0G?
For technical support, including 1.5KE24CA R0G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5KE24CA R0G requirements.
6.How does Aetrix verify that 1.5KE24CA R0G is sourced from the original manufacturer or authorized distributors?
All 1.5KE24CA 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 1.5KE24CA R0G meets industry standards.
7.What is the process for return or replacement of 1.5KE24CA R0G?
All 1.5KE24CA R0G units undergo pre-shipment inspection (PSI). If there is an issue with 1.5KE24CA 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 1.5KE24CA R0G part is unused and in its original packaging.
Return procedure for 1.5KE24CA R0G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5KE24CA R0G Tags
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Diodes Incorporated
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