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Taiwan Semiconductor Corporation 1.5KE400AHB0G
- Part No.:
- 1.5KE400AHB0G
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-201AA, DO-27, Axial
- Datasheet:
-
1.5KE400AHB0G.pdf
- Description:
- TVS DIODE 342VWM 548VC DO201
- Quantity:
- Payment:
- Shipping:
Inventory:7,605
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Product details
Overview
1.5KE400AHB0G from Taiwan Semiconductor is a unidirectional 400V transient voltage suppressor (TVS) diode in DO-201 package, rated for 1500W peak pulse power at 10/1000μs, with 324V working stand-off voltage, 360–440V breakdown voltage at 1mA, and 574V maximum clamping voltage at 2.7A peak impulse current. It protects automotive power rails and industrial DC inputs against ISO 7637-2 Pulse 1/2a/2b/3a/3b transients.
For engineers reviewing the 1.5KE400AHB0G datasheet, 1.5KE400AHB0G pinout, 1.5KE400AHB0G application, or 1.5KE400AHB0G equivalent, this AEC-Q101 qualified TVS offers verified clamping performance, low dynamic impedance, sub-1ps response time, and RoHS/halogen-free compliance - critical for high-reliability 12V/24V/48V system surge protection design.
Technical Context
The 1.5KE400AHB0G operates as a unidirectional avalanche diode, triggering when reverse voltage exceeds its 360–440V VBR range at 1mA test current. Its 574V VC clamping voltage limits downstream voltage stress during 1500W transients, while junction temperature remains within –55°C to +175°C under specified derating.
Designed for automotive-grade reliability, it meets AEC-Q101 stress testing and ISO 7637-2 immunity requirements for Pulse 1 (inductive load dump), Pulse 2a (sudden load disconnect), Pulse 2b (alternator field decay), and Pulse 3a/3b (switching noise). Its DO-201 package supports 5W steady-state dissipation on 16mm × 16mm copper pad at 75°C lead temperature.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 324 V - Maximum continuous reverse operating voltage before leakage exceeds 1 µA; defines safe DC bus margin for 400V nominal systems. |
| VBR @ IT=1mA | 360–440 V - Breakdown voltage range ensuring reliable turn-on across process variation; guarantees suppression activation before system damage threshold. |
| VC @ IPP=2.7A | 574 V - Clamped voltage during 10/1000µs surge; determines maximum voltage seen by protected ICs or MOSFETs. |
| PPK | 1500 W - Peak pulse power handling per JEDEC standard; enables robust protection against severe load-dump events. |
| IFSM | 200 A - Non-repetitive forward surge current rating; supports safe handling of accidental polarity reversal or inrush conditions. |
| TJ max | +175 °C - Maximum junction temperature; allows operation in under-hood automotive environments without thermal shutdown. |
| Package | DO-201 - Industry-standard axial-leaded package with tin-plated leads compliant to J-STD-002; compatible with wave and reflow soldering. |
Pinout & Package
DO-201 package: axial-leaded, cylindrical epoxy-molded 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 JESD201 Class 2 whisker resistance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (unmarked end) | Forward conduction path / ground reference | Connected to system ground or low-side return; carries full surge current during clamping. |
| Cathode (banded end) | Reverse-biased avalanche node | Connected to protected line (e.g., battery rail); initiates clamping when voltage exceeds VBR. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive under-hood use including temperature cycling, humidity bias, and mechanical shock per AEC stress requirements. |
| 1500W 10/1000µs surge rating | Withstands ISO 7637-2 Pulse 1 (load dump) up to 120V superimposed on 24V systems without degradation. |
| Sub-1ps response time (unidirectional) | Activates faster than most microcontrollers or gate drivers can be damaged, enabling effective protection of sensitive electronics. |
| Low dynamic impedance | Ensures minimal voltage overshoot during fast transients; maintains tight clamping even at high di/dt rates. |
| RoHS & halogen-free | Complies with IEC 61249-2-21; suitable for automotive OEMs requiring strict material declarations and end-of-life recyclability. |
Applications
| Automotive Power Distribution | Industrial DC Input Protection |
|---|---|
Use Scenario: 24V battery rail in engine control units exposed to ISO 7637-2 Pulse 1 (load dump) up to 120V. IC Role / Device Role / Timing Role: Unidirectional TVS placed between battery input and DC-DC converter input stage. Use Value: Limits transient voltage to ≤574V, preventing overvoltage failure of 60V-rated input MOSFETs and controller ICs. |
Use Scenario: 48V telecom power supply input subjected to inductive switching surges from relay coils or solenoids. IC Role / Device Role / Timing Role: Primary surge clamp on main DC input before EMI filter and PFC stage. Use Value: Absorbs 1500W energy without failure, maintaining system uptime and avoiding costly field returns due to surge-induced latch-up. |
| Lighting System ESD Protection | Motor Drive Bus Clamp |
Use Scenario: LED headlamp driver board exposed to human-body-model (HBM) ESD and cable discharge events. IC Role / Device Role / Timing Role: Secondary-level TVS on low-voltage control lines (e.g., PWM dimming input). Use Value: Sub-1ps response prevents latch-up in MCU GPIOs; <1µA leakage at 324V ensures no impact on standby current. |
Use Scenario: 400V DC bus in BLDC motor drive encountering regenerative voltage spikes during rapid deceleration. IC Role / Device Role / Timing Role: Bus-clamp TVS connected across DC link capacitors to limit overvoltage during regeneration. Use Value: Clamps bus voltage to 574V, protecting 650V IGBTs and gate drivers from destructive overvoltage stress. |
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 SMAJ400A | Same 400V VWM, but 600W rating (SMA package); lower PPK and smaller footprint. | Not AEC-Q101 qualified; limited to commercial/industrial use; unsuitable for automotive under-hood deployment. | Select only for space-constrained non-automotive designs where 1500W surge margin is not required. |
| ON Semiconductor 1.5SMC400A | Same 400V rating and 1500W rating, but SMC (DO-214AB) surface-mount package; no axial leads. | Requires PCB redesign for SMT assembly; incompatible with through-hole layouts or existing DO-201 footprints. | Choose only when migrating to surface-mount manufacturing and layout revision is feasible. |
Compared with Littelfuse SMAJ400A and ON Semi 1.5SMC400A, the 1.5KE400AHB0G uniquely combines AEC-Q101 qualification, DO-201 axial form factor, and full 1500W capability - making it the only drop-in solution for legacy automotive harness-connected modules requiring proven mechanical robustness and high-energy surge immunity.
Availability
1.5KE400AHB0G is available at Aetrix Electronics and suitable for automotive power distribution, industrial DC input protection, lighting system ESD protection, and motor drive bus clamp applications requiring stable component supply and long-term lifecycle continuity.
Supply support for 1.5KE400AHB0G 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 consumer markets since 1979.
The 1.5KE series was designed specifically for high-energy transient suppression in harsh automotive and industrial environments, emphasizing AEC-Q101 reliability, ISO 7637-2 compliance, and robust DO-201 packaging for vibration-prone installations.
FAQ
What does the 'H' and 'B0G' suffix mean in 1.5KE400AHB0G?
The 'H' suffix indicates AEC-Q101 qualification, confirming the 1.5KE400AHB0G has passed automotive-grade reliability stress testing. The 'B0G' denotes green (halogen-free) epoxy compound and ammo box packaging (500 units). This makes the 1.5KE400AHB0G suitable for automotive under-hood applications requiring both environmental compliance and mechanical robustness.
Is 1.5KE400AHB0G unidirectional or bidirectional?
The 1.5KE400AHB0G is a unidirectional TVS diode, as confirmed by its single cathode band marking, absence of 'CA' suffix, and specification of forward voltage (VF = 5.0V max) in the datasheet. It conducts only in forward bias and clamps transients on the reverse-biased cathode-to-anode path - unlike bidirectional types which suppress in both polarities.
What is the maximum clamping voltage of 1.5KE400AHB0G at rated surge current?
The 1.5KE400AHB0G has a maximum clamping voltage (VC) of 574 V at 2.7 A peak impulse current (IPP) under the standard 10/1000 µs waveform. This value is measured per JEDEC test conditions and defines the upper voltage limit imposed on protected circuitry during worst-case surge events.
Can 1.5KE400AHB0G be used in place of 1.5KE400A?
Yes - the 1.5KE400AHB0G is functionally identical to 1.5KE400A in electrical specifications (VBR, VC, PPK), but adds AEC-Q101 qualification ('H') and halogen-free/green compound ('B0G'). No circuit or layout changes are needed; the 1.5KE400AHB0G is a direct upgrade for automotive applications requiring certified reliability.
What is the thermal derating behavior of 1.5KE400AHB0G above 25°C ambient?
The 1.5KE400AHB0G follows the standard JEDEC derating curve: peak pulse power decreases linearly from 1500W at 25°C to zero at 175°C junction temperature. At 75°C ambient, it retains ~80% of rated power when mounted on a 16mm × 16mm copper pad; full derating data is provided in Figure 2 of the Taiwan Semiconductor 1.5KE series datasheet.
1.5KE400AHB0G 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):
- 342V
- Voltage - Breakdown (Min):
- 380V
- Voltage - Clamping (Max) @ Ipp:
- 548V
- Current - Peak Pulse (10/1000µs):
- 2.8A
- Power - Peak Pulse:
- 1500W (1.5kW)
- Power Line Protection:
- No
- Applications:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 175°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Through Hole
- Supplier Device Package:
- DO-201
1.5KE400AHB0G FAQ
1.How can I place an order for 1.5KE400AHB0G through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5KE400AHB0G 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 1.5KE400AHB0G reliable?
The price and inventory of 1.5KE400AHB0G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5KE400AHB0G is usually 5 days.
3.What payment methods are accepted for 1.5KE400AHB0G?
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Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5KE400AHB0G?
1.5KE400AHB0G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5KE400AHB0G 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 1.5KE400AHB0G?
For technical support, including 1.5KE400AHB0G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5KE400AHB0G requirements.
6.How does Aetrix verify that 1.5KE400AHB0G is sourced from the original manufacturer or authorized distributors?
All 1.5KE400AHB0G 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 1.5KE400AHB0G meets industry standards.
7.What is the process for return or replacement of 1.5KE400AHB0G?
All 1.5KE400AHB0G units undergo pre-shipment inspection (PSI). If there is an issue with 1.5KE400AHB0G, 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 1.5KE400AHB0G part is unused and in its original packaging.
Return procedure for 1.5KE400AHB0G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5KE400AHB0G Tags
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DESD3V3E1BL-7B
Diodes Incorporated
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Nexperia USA Inc.
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Toshiba Semiconductor and Storage
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