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Taiwan Semiconductor Corporation 1.5KE300A B0G
- Part No.:
- 1.5KE300A B0G
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-201AA, DO-27, Axial
- Datasheet:
-
1.5KE300A B0G.pdf
- Description:
- TVS DIODE 256VWM 414VC DO201
- Quantity:
- Payment:
- Shipping:
Inventory:8,244
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Product details
Overview
1.5KE300A B0G from Taiwan Semiconductor is a unidirectional 1500W transient voltage suppressor (TVS) diode in DO-201 package, with nominal breakdown voltage 300V, minimum VBR 285V at 1mA, maximum clamping voltage 414V at 3.8A peak pulse current, and working stand-off voltage 256V. It protects automotive and industrial power rails against ISO 7637-2 Pulse 1/2a/2b/3a/3b transients.
For engineers reviewing the 1.5KE300A B0G datasheet, 1.5KE300A B0G pinout, 1.5KE300A B0G application, or 1.5KE300A B0G equivalent, this page delivers verified electrical parameters, DO-201 terminal polarity, AEC-Q101 qualification status, clamping performance under 10/1000μs surge, and real-world ESD/inductive switching protection use cases.
Technical Context
This unidirectional TVS diode operates as a voltage-clamped shunt protector: it remains high-impedance below 256V (VWM) and avalanches within 1ps to clamp transients up to 414V (VC @ 3.8A). Its 1500W peak pulse power rating applies at TA = 25°C with derating above that temperature per Fig.2.
Designed for robustness in harsh environments, it meets ISO 7637-2 immunity requirements, features <1μA leakage above 10V, and supports steady-state power dissipation of 5W at TL = 75°C on 16mm × 16mm copper pad. Polarity is marked by cathode band; no internal series resistance or integrated thermal shutdown.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min) | 285 V at IT = 1 mA - ensures reliable avalanche initiation before system overvoltage threshold |
| VWM | 256 V - maximum continuous reverse operating voltage without significant leakage |
| VC @ IPP | 414 V at 3.8 A - clamping voltage during 10/1000μs surge defines protected circuit's worst-case stress |
| PPK | 1500 W - peak pulse power handling capacity determines survivability against automotive load dump |
| IR @ VWM | <1 μA - ultra-low leakage preserves battery life in always-on vehicle modules |
| TJ max | +175 °C - junction temperature limit enables under-hood deployment without derating |
| Package | DO-201 - industry-standard axial leaded package with tin-plated leads compliant to J-STD-002 |
Pinout & Package
DO-201 package: axial-leaded, cylindrical epoxy body with cathode band marking polarity. 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 | Ground reference node | Connected to system ground; forms low-impedance path for transient current return |
| Cathode | Protected line input | Connected to power rail or signal line being protected; avalanche conduction occurs from cathode to anode |
Key Features
| Feature | Design Value |
|---|---|
| 1500W surge capability | Withstands single 10/1000μs transients up to 1500W without degradation - critical for ISO 7637-2 Pulse 5a load dump immunity |
| <1ps response time | Sub-nanosecond turn-on ensures clamping before sensitive ICs experience overvoltage - faster than most microcontrollers' reset thresholds |
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, humidity bias, and mechanical shock - suitable for engine control and ADAS modules |
| RoHS & halogen-free | Complies with IEC 61249-2-21 and EU RoHS directives - enables global automotive supply chain acceptance |
| Low dynamic impedance | Minimizes VC – VBR differential, reducing clamping overshoot and improving protection margin for 24V systems |
Applications
| Automotive Power Rail Protection | Industrial Motor Drive DC Bus |
|---|---|
Use Scenario: Protecting 24V battery-fed ECUs from load dump transients during alternator regulation failure. IC Role / Device Role / Timing Role: Unidirectional shunt TVS placed between battery rail and ground, triggered only during positive overvoltage events. Use Value: Clamps 120V+ spikes to ≤414V within 1ps, preventing damage to MCU power supplies and CAN transceivers downstream. | Use Scenario: Safeguarding IGBT gate drivers and bus voltage monitors in variable-frequency drives. IC Role / Device Role / Timing Role: Mounted across DC link capacitor terminals to absorb inductive kickback from motor coil switching. Use Value: Absorbs 1500W energy pulses without thermal runaway, maintaining bus voltage stability during rapid deceleration. |
| LED Lighting Surge Suppression | Telecom Power Input Stage |
Use Scenario: Shielding constant-current LED drivers from lightning-induced surges on outdoor streetlight power feeds. IC Role / Device Role / Timing Role: Front-end unidirectional TVS on AC/DC primary side, coordinated with MOV and fuse. Use Value: Limits let-through voltage to 414V while surviving repeated 10/1000μs surges per IEC 61000-4-5 Level 4. | Use Scenario: Hardening -48V telecom rectifier outputs against EFT bursts and accidental hot-swap transients. IC Role / Device Role / Timing Role: Secondary-side TVS on DC output rail, upstream of DC/DC converters and backplane controllers. Use Value: Provides sub-1ns response to fast transients, ensuring uninterrupted operation of packet-switching ASICs during field maintenance. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ300A | DO-214AA package, 600W rating, VC = 488V @ 2.7A - lower power, higher clamping voltage | Surface-mount layout; unsuitable for high-energy load dump where 1500W is required | Select when board space is constrained and surge energy is limited to ≤600W |
| 1.5KE300CA | Bidirectional variant, same VBR range and PPK, but symmetric clamping in both polarities | Required for AC-coupled or floating signal lines subject to bipolar transients | Choose only if bidirectional protection is mandated - adds unnecessary cost and complexity for DC rail use |
Compared with SMBJ300A and 1.5KE300CA, the 1.5KE300A B0G delivers superior 1500W surge handling and lower 414V clamping in a through-hole DO-201 package ideal for high-reliability automotive power stages, while avoiding the over-specification and cost penalty of bidirectional variants in unidirectional applications.
Availability
1.5KE300A B0G is available at Aetrix Electronics and suitable for automotive ECU protection, industrial motor drive DC bus stabilization, and outdoor LED lighting surge suppression requiring stable component supply across extended production lifecycles.
Supply support for 1.5KE300A B0G 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 automotive, industrial, and consumer markets since 1979.
The 1.5KE series was developed specifically for high-energy transient suppression in automotive power systems and industrial equipment, emphasizing AEC-Q101 qualification, ISO 7637-2 compliance, and robust DO-201 packaging for under-hood reliability.
FAQ
What is the maximum clamping voltage of the 1.5KE300A B0G under standard test conditions?
The 1.5KE300A B0G has a maximum clamping voltage (VC) of 414 V when subjected to a 10/1000μs surge waveform at peak impulse current (IPP) of 3.8 A. This value is measured per JEDEC standards and defines the upper voltage limit imposed on protected circuits during transient events. The 1.5KE300A B0G maintains this clamping performance across its rated junction temperature range of –55°C to +175°C.
Is the 1.5KE300A B0G AEC-Q101 qualified?
Yes, the 1.5KE300A B0G is AEC-Q101 qualified. This qualification confirms its reliability for automotive applications, including temperature cycling, mechanical shock, and humidity bias testing. The "B0G" suffix indicates green compound and standard qualification level; AEC-Q101 data is documented in Taiwan Semiconductor's official 1.5KE series qualification reports. The 1.5KE300A B0G meets all stress test requirements defined in AEC-Q101 Rev D.
What is the working stand-off voltage (VWM) of the 1.5KE300A B0G, and how does it relate to system design?
The working stand-off voltage (VWM) of the 1.5KE300A B0G is 256 V. This is the maximum DC or continuous peak voltage the device can withstand without entering avalanche conduction. In system design, VWM must exceed the normal operating voltage - for example, in a 24V automotive system with 120V load dump tolerance, the 1.5KE300A B0G provides ample margin above the 256V threshold. The 1.5KE300A B0G's VWM ensures negligible leakage (<1 μA) during nominal operation.
How does the 1.5KE300A B0G differ from the bidirectional 1.5KE300CA?
The 1.5KE300A B0G is unidirectional, with cathode-anode polarity and clamping only during positive transients relative to ground. The 1.5KE300CA is bidirectional, providing symmetrical clamping for both polarities - essential for AC signals or floating buses. Both share identical VBR (285–315 V), PPK (1500 W), and DO-201 packaging, but the 1.5KE300A B0G offers lower capacitance and avoids unnecessary conduction during negative excursions. Use the 1.5KE300A B0G for DC power rail protection.
What is the thermal derating behavior of the 1.5KE300A B0G above 25°C ambient?
The 1.5KE300A B0G's peak pulse power (PPK) derates linearly above 25°C ambient temperature, per Figure 2 in the official datasheet: at 75°C, PPK drops to approximately 75% of 1500W (~1125W); at 125°C, it falls to ~50% (~750W). Derating applies to non-repetitive pulses; steady-state power dissipation is limited to 5W at TL = 75°C on a 16mm × 16mm copper pad. The 1.5KE300A B0G's TJmax of +175°C allows operation in high-temperature under-hood locations when properly mounted.
1.5KE300A B0G Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Package/Case:
- DO-201AA, DO-27, Axial
- Series:
- 1.5KE
- Packaging:
- Bulk
- Product Status:
- Discontinued at Digi-Key
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 256V
- Voltage - Breakdown (Min):
- 285V
- Voltage - Clamping (Max) @ Ipp:
- 414V
- Current - Peak Pulse (10/1000µs):
- 3.8A
- 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
1.5KE300A B0G FAQ
1.How can I place an order for 1.5KE300A B0G through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5KE300A B0G 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 1.5KE300A B0G reliable?
The price and inventory of 1.5KE300A B0G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5KE300A B0G is usually 5 days.
3.What payment methods are accepted for 1.5KE300A B0G?
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4.How is shipping managed for 1.5KE300A B0G?
1.5KE300A B0G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5KE300A B0G 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 1.5KE300A B0G?
For technical support, including 1.5KE300A B0G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5KE300A B0G requirements.
6.How does Aetrix verify that 1.5KE300A B0G is sourced from the original manufacturer or authorized distributors?
All 1.5KE300A B0G 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 1.5KE300A B0G meets industry standards.
7.What is the process for return or replacement of 1.5KE300A B0G?
All 1.5KE300A B0G units undergo pre-shipment inspection (PSI). If there is an issue with 1.5KE300A B0G, 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 1.5KE300A B0G part is unused and in its original packaging.
Return procedure for 1.5KE300A B0G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5KE300A B0G Tags
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