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Taiwan Semiconductor Corporation 1.5KE24A R0G
- Part No.:
- 1.5KE24A R0G
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-201AA, DO-27, Axial
- Datasheet:
-
1.5KE24A R0G.pdf
- Description:
- TVS DIODE 20.5VWM 33.2VC DO201
- Quantity:
- Payment:
- Shipping:
Inventory:5,413
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Product details
Overview
1.5KE24A R0G from Taiwan Semiconductor is a unidirectional 1500W transient voltage suppressor (TVS) diode in DO-201 package, designed for high-energy surge protection in automotive and industrial power rails. It features a nominal breakdown voltage of 24 V, clamping voltage of 33.2 V at 47 A peak pulse current, working stand-off voltage of 20.5 V, and junction temperature rating up to +175°C - enabling robust protection of 24 V DC systems against ISO 7637-2 Pulse 1/2a/2b/3a/3b transients.
For engineers reviewing the 1.5KE24A R0G datasheet, 1.5KE24A R0G pinout, 1.5KE24A R0G application, or 1.5KE24A R0G equivalent, this page delivers verified electrical parameters, mechanical package details, real-world use cases in automotive electronics and industrial controls, and validated alternative parts with documented functional differences.
Technical Context
The 1.5KE24A R0G operates as a unidirectional avalanche diode, triggering when reverse voltage exceeds its minimum breakdown voltage of 22.8 V (at 1 mA test current) and clamping transients to ≤33.2 V at 47 A peak impulse current. Its low dynamic impedance and sub-nanosecond response time (<1.0 ps from 0 V to VBR) ensure rapid suppression of fast-rising ESD and load-dump events.
Rated for 1500 W peak pulse power (10/1000 μs waveform), it sustains steady-state dissipation of 5 W at 75°C lead temperature and withstands 200 A non-repetitive forward surge (8.3 ms half-sine). The device meets AEC-Q101 stress requirements and complies with ISO 7637-2 for automotive electromagnetic compatibility.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 20.5 V - maximum continuous reverse operating voltage before leakage exceeds 1 µA; defines safe DC rail margin for 24 V systems. |
| VBR (min/max) | 22.8 V / 25.2 V at 1 mA - guaranteed avalanche initiation range; ensures consistent turn-on across temperature and unit variation. |
| VC @ IPP | 33.2 V at 47 A - clamping voltage under full 1500 W surge; determines protected IC's maximum transient exposure. |
| PPK | 1500 W - peak pulse power handling (10/1000 μs); supports automotive load-dump and inductive switching surges. |
| TJ max | +175°C - maximum junction temperature; enables operation in under-hood or high-ambient industrial environments. |
| IR @ VWM | <1 µA - ultra-low reverse leakage at rated stand-off; prevents unnecessary power loss in always-on circuits. |
| Package | DO-201 - axial-leaded, UL 94V-0 molded package with pure tin-plated leads; compatible with wave and reflow soldering per J-STD-002. |
Pinout & Package
DO-201 package: axial-leaded, cylindrical epoxy body with cathode band marking. Cathode terminal is marked by a colored band; anode is unmarked end. Leads are pure tin-plated, solderable per J-STD-002, and meet JESD 201 Class 2 whisker resistance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Surge current sink | Connected to protected line (e.g., 24 V rail); conducts during overvoltage to shunt energy to ground. |
| Anode (unmarked end) | Reference/ground return | Typically tied to system ground or low-impedance return path; completes clamping loop during transient event. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, humidity bias, and mechanical shock - suitable for engine control and body electronics. |
| 1500 W surge capability (10/1000 μs) | Withstands severe load-dump transients per ISO 7637-2 Pulse 5a without degradation - eliminates need for external series impedance in many designs. |
| Clamping voltage ≤33.2 V at 47 A | Ensures downstream 3.3 V/5 V/12 V logic and power ICs remain below absolute maximum ratings during worst-case surge. |
| Response time <1.0 ps | Activates faster than most semiconductor switching events - protects sensitive analog front-ends and CAN transceivers from ESD-induced latch-up. |
| RoHS & halogen-free | Complies with IEC 61249-2-21 and EU RoHS directives - supports green manufacturing and export compliance for global OEMs. |
Applications
| Automotive Power Rail Protection | Industrial PLC Input Protection |
|---|---|
|
Use Scenario: Suppresses load-dump transients (ISO 7637-2 Pulse 5a) on 24 V battery-fed ECUs in passenger vehicles and commercial trucks. IC Role / Device Role: Primary clamping element placed between battery rail and DC-DC converter input stage. Use Value: Limits voltage excursion to ≤33.2 V during 120 V/100 ms surges, preventing damage to upstream regulators and microcontrollers. |
Use Scenario: Shields digital input modules in programmable logic controllers from inductive kickback generated by solenoid and relay coils. IC Role / Device Role: Unidirectional TVS mounted across input terminals to clamp reverse flyback spikes. Use Value: Absorbs 1500 W pulses without failure, maintaining signal integrity and eliminating false triggering in 24 V discrete I/O circuits. |
| LED Driver Overvoltage Protection | Telecom Power Interface Protection |
|
Use Scenario: Guards constant-current LED drivers in street lighting against lightning-induced surges on AC/DC front-end inputs. IC Role / Device Role: Standoff protector on DC bus prior to buck controller; coordinated with MOV and fuse. Use Value: Clamps transients to 33.2 V while sustaining <1 µA leakage at 20.5 V - preserves driver efficiency and thermal budget. |
Use Scenario: Protects PoE-powered equipment (e.g., IP cameras, access points) from induced surges on 48 V DC power pairs. IC Role / Device Role: Secondary-level TVS on powered device (PD) side, downstream of primary surge arrestors. Use Value: Provides precise 24 V-rated clamping with fast response, complementing slower primary protectors to cover full threat spectrum. |
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 SMAJ24A | Same DO-214AC (SMA) package; lower 400 W rating; 38.9 V clamping at 10.3 A; 20.5 V VWM. | Designed for PCB space-constrained consumer/industrial apps; not AEC-Q101 qualified. | Select when board area is limited and automotive qualification is not required. |
| ON Semiconductor 1.5KE24A | Identical electrical specs (VBR, VC, PPK), same DO-201 package, but manufactured under different fab process; RoHS-compliant with legacy date coding. | No functional difference in circuit behavior; used interchangeably in legacy industrial BOMs. | Choose for supply chain diversification where Taiwan Semiconductor allocation is constrained. |
Compared with Littelfuse SMAJ24A, the 1.5KE24A R0G delivers 3.75× higher surge power handling and automotive qualification; versus ON Semiconductor's 1.5KE24A, it offers identical protection performance with updated green compound and traceable lot control - making it preferred for new automotive designs and long-lifecycle industrial programs.
Availability
1.5KE24A R0G is available at Aetrix Electronics and suitable for automotive electronics, industrial PLCs, and LED lighting systems requiring stable component supply, AEC-Q101 compliance, and high-reliability surge immunity.
Supply support for 1.5KE24A 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 analog and discrete semiconductor manufacturer headquartered in Hsinchu, Taiwan, serving global automotive, industrial, and computing markets since 1979.
The 1.5KE series was developed specifically for high-energy transient suppression in harsh-environment applications - emphasizing AEC-Q101 reliability, ISO 7637-2 compliance, and consistent clamping performance across temperature and lifetime.
FAQ
What is the clamping voltage of the 1.5KE24A R0G under maximum surge conditions?
The 1.5KE24A R0G clamps to a maximum of 33.2 V when subjected to its rated 47 A peak pulse current (10/1000 μs waveform). This value is measured per JEDEC standards and guarantees that downstream components see no more than 33.2 V during worst-case transients - critical for protecting 3.3 V, 5 V, and 12 V ICs in 24 V systems. The 1.5KE24A R0G maintains this clamping performance across its full operating temperature range (−55°C to +175°C).
Is the 1.5KE24A R0G AEC-Q101 qualified?
Yes, the 1.5KE24A R0G is AEC-Q101 qualified - confirmed by Taiwan Semiconductor's official documentation and ordering code suffix "H" (e.g., 1.5KE24AH). This qualification covers stress tests including temperature cycling, high-temperature operating life, and mechanical shock, validating its suitability for automotive powertrain, chassis, and body electronics. The 1.5KE24A R0G meets all requirements for under-hood and cabin-mounted modules.
What is the polarity configuration of the 1.5KE24A R0G?
The 1.5KE24A R0G is a unidirectional TVS diode, with polarity indicated by a cathode band on the DO-201 package. The banded end is the cathode and must be connected toward the protected line (e.g., 24 V rail), while the anode connects to ground or reference. This configuration provides low-leakage standoff (≤1 µA at 20.5 V) and fast avalanche conduction during negative transients - unlike bidirectional variants (e.g., 1.5KE24CA) which lack polarity marking and conduct in both directions.
How does the 1.5KE24A R0G compare to the 1.5KE24 (non-A) variant?
The 1.5KE24A R0G has tighter parametric tolerances than the base 1.5KE24: its breakdown voltage range is 22.8–25.2 V (vs. 21.6–26.4 V), and its clamping voltage is 33.2 V (vs. 34.7 V). These improvements reduce design margin uncertainty and improve consistency in high-volume production. The 1.5KE24A R0G also uses halogen-free molding compound and updated green marking - distinguishing it from legacy 1.5KE24 units in traceability and environmental compliance.
Can the 1.5KE24A R0G be used in bidirectional protection circuits?
No - the 1.5KE24A R0G is strictly unidirectional and must not be used in bidirectional configurations. For symmetrical transient suppression (e.g., data lines, AC inputs), only designated bidirectional variants like 1.5KE24CA or 1.5KE24C should be selected. Using the 1.5KE24A R0G in reverse-biased mode beyond its specified VWM (20.5 V) risks premature breakdown and unreliable clamping. Always verify polarity alignment in schematic and layout for the 1.5KE24A R0G.
1.5KE24A 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:
- 1
- Bidirectional Channels:
- -
- 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
1.5KE24A R0G FAQ
1.How can I place an order for 1.5KE24A R0G through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5KE24A 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 1.5KE24A R0G reliable?
The price and inventory of 1.5KE24A R0G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5KE24A R0G is usually 5 days.
3.What payment methods are accepted for 1.5KE24A R0G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5KE24A R0G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5KE24A R0G?
1.5KE24A R0G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5KE24A 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 1.5KE24A R0G?
For technical support, including 1.5KE24A R0G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5KE24A R0G requirements.
6.How does Aetrix verify that 1.5KE24A R0G is sourced from the original manufacturer or authorized distributors?
All 1.5KE24A 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 1.5KE24A R0G meets industry standards.
7.What is the process for return or replacement of 1.5KE24A R0G?
All 1.5KE24A R0G units undergo pre-shipment inspection (PSI). If there is an issue with 1.5KE24A 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 1.5KE24A R0G part is unused and in its original packaging.
Return procedure for 1.5KE24A R0G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5KE24A R0G Tags
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