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Taiwan Semiconductor Corporation 1.5KE250CA A0G
- Part No.:
- 1.5KE250CA A0G
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-201AA, DO-27, Axial
- Datasheet:
-
1.5KE250CA A0G.pdf
- Description:
- TVS DIODE 214VWM 344VC DO201
- Quantity:
- Payment:
- Shipping:
Inventory:2,395
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Product details
Overview
1.5KE250CA from Taiwan Semiconductor is a bidirectional 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 250V, clamping voltage of 344V at 4.5A peak impulse current, and meets ISO 7637-2 Pulse 1/2a/2b/3a/3b immunity requirements.
For engineers reviewing the 1.5KE250CA datasheet, 1.5KE250CA pinout, 1.5KE250CA application, or 1.5KE250CA equivalent, key selection criteria include bidirectional clamping capability, 10/1000μs waveform surge rating, junction temperature range (–55°C to +175°C), and AEC-Q101 qualification status - critical for automotive ECU and battery management system design.
Technical Context
The 1.5KE250CA operates as a bidirectional avalanche diode with symmetrical clamping in both polarities, enabling robust protection against reverse- and forward-polarity transients without external polarity management. Its low dynamic impedance ensures rapid voltage limiting during fast-rising surges (≤5.0ns response time).
Designed for unclamped inductive load switching and electrical fast transient (EFT) immunity, it delivers 1500W peak pulse power at TA = 25°C and derates linearly above ambient temperature per JEDEC-standard curves. The device sustains 200A non-repetitive forward surge current (8.3ms half-sine) and exhibits ≤1μA blocking leakage above 10V.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 225V / 275V at IT = 1mA - defines guaranteed avalanche initiation window under standardized test conditions |
| VWM | 202V - maximum continuous working voltage before significant leakage; sets safe operating margin below breakdown |
| VC @ IPP | 344V at 4.5A - clamping voltage during 10/1000μs surge; determines protected circuit's maximum transient exposure |
| PPK | 1500W - peak pulse power handling capacity; enables suppression of high-energy automotive load-dump events |
| TJ max | +175°C - maximum junction temperature; supports operation in under-hood environments and high-power PCB layouts |
| IPP max | 4.5A - peak impulse current at VC; correlates directly with surge energy absorption (E = ∫v·i dt) |
| Response time | ≤5.0ns - time from 0V to VBR in bidirectional mode; ensures protection before sensitive ICs experience overvoltage stress |
Pinout & Package
Package: DO-201 axial-leaded plastic case with cathode band marking (bidirectional symmetry means no functional polarity; band denotes physical orientation only). Molding compound complies with UL 94V-0; leads are pure tin-plated and solderable per J-STD-002.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (symmetrical) | Bidirectional avalanche junction | Both terminals function identically; no DC polarity dependency - simplifies layout and eliminates orientation errors |
| Lead 1 / Lead 2 | Current path for surge conduction | Leads carry full 4.5A peak impulse current; require ≥0.6"×0.6" copper pad for thermal derating compliance |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Identical VBR and VC in both directions - eliminates need for dual-device placement in AC or floating-bus systems |
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and mechanical shock - required for ECU, ADAS, and body control modules |
| ISO 7637-2 compliance | Passes Pulse 1 (inductive switch-off), Pulse 2a/2b (load dump), and Pulse 3a/3b (EFT) - covers full automotive transient immunity standard |
| Low leakage | <1μA at VWM = 202V - prevents parasitic drain in always-on battery-connected circuits like telematics or alarm systems |
| Halogen-free & RoHS | Complies with IEC 61249-2-21 and EU RoHS Directive 2011/65/EU - meets environmental requirements for global OEM supply chains |
Applications
| Automotive Load-Dump Protection | Industrial Motor Drive Surge Suppression |
|---|---|
|
Use Scenario: 12V/24V vehicle electrical system subjected to alternator load-dump transients up to 120V for 400ms. IC Role / Device Role / Timing Role: Bidirectional TVS placed across main power rail upstream of DC-DC converters and microcontrollers. Use Value: Clamps transients to ≤344V within 5ns, preventing latch-up or gate oxide damage in downstream PMICs and CAN transceivers. |
Use Scenario: 3-phase inverter drive controlling 5kW induction motor with frequent on/off cycling. IC Role / Device Role / Timing Role: TVS mounted across DC bus input to absorb inductive kickback from contactor switching and regenerative braking. Use Value: Absorbs 1500W surge energy without degradation, maintaining <1μA leakage at 202V standby to avoid unnecessary power loss. |
| Smart Lighting ESD Protection | Telecom Power Interface Transient Guarding |
|
Use Scenario: LED streetlight driver exposed to lightning-induced surges on AC mains input and data lines. IC Role / Device Role / Timing Role: Primary-level TVS on AC input rectifier output, coordinated with MOV and gas discharge tube stages. Use Value: Fast 5ns response captures early transient rise, while 175°C TJ rating ensures reliability in sealed, thermally constrained outdoor enclosures. |
Use Scenario: PoE-powered network switch with 48V DC input susceptible to induced surges from nearby lightning strikes. IC Role / Device Role / Timing Role: Secondary-side TVS on 48V rail feeding Ethernet PHY and controller ICs. Use Value: Bidirectional symmetry allows single-device protection of isolated 48V bus; 202V VWM provides 20% margin above nominal rail. |
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 SMAJ250CA | Same DO-214AC (SMA) package; lower PPK = 400W; VC = 414V @ 3.6A - higher clamping voltage, smaller footprint | Not AEC-Q101 qualified; lacks ISO 7637-2 certification - suitable for commercial-grade lighting or consumer power supplies only | Select when board space is constrained and automotive qualification is not required; verify clamping margin against protected IC VDS(max). |
| ON Semiconductor 1.5SMC250CA | DO-214AB (SMC) package; PPK = 1500W; VC = 353V @ 4.3A - slightly higher clamping, larger thermal mass than DO-201 | Meets AEC-Q101 and ISO 7637-2; identical application scope but requires PCB re-layout due to different footprint and lead spacing | Choose when higher thermal dissipation is needed or existing SMC footprint is standardized; confirm mechanical clearance for axial DO-201 vs. surface-mount SMC. |
Compared with SMAJ250CA and 1.5SMC250CA, the 1.5KE250CA uniquely combines AEC-Q101 qualification, ISO 7637-2 compliance, and DO-201 axial-leaded form factor - making it the only option supporting automotive under-hood deployment without layout change or derating compromise.
Availability
1.5KE250CA is available at Aetrix Electronics and suitable for automotive electronic control units, industrial motor drives, smart lighting systems, and telecom power interfaces requiring stable component supply across multi-year production cycles.
Supply support for 1.5KE250CA 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, specializing in high-reliability protection devices, rectifiers, and power management components.
The 1.5KE series was developed specifically for automotive and industrial transient immunity applications, emphasizing AEC-Q101 qualification, ISO 7637-2 compliance, and robust surge handling in harsh thermal environments.
FAQ
What is the maximum clamping voltage of the 1.5KE250CA under standard 10/1000μs surge conditions?
The 1.5KE250CA has a maximum clamping voltage (VC) of 344V at 4.5A peak impulse current (IPP) under the standardized 10/1000μs double-exponential waveform. This value is measured per JEDEC test conditions and guarantees that downstream circuitry will not be exposed to voltages exceeding 344V during a 1500W transient event. The 1.5KE250CA maintains this performance across its full operating temperature range.
Is the 1.5KE250CA suitable for automotive applications requiring AEC-Q101 qualification?
Yes, the 1.5KE250CA is explicitly AEC-Q101 qualified, as confirmed in Taiwan Semiconductor's official documentation. This qualification covers stress tests including high-temperature reverse bias (HTRB), temperature cycling, and mechanical shock - validating its suitability for under-hood automotive ECUs, battery management systems, and ADAS modules. The 1.5KE250CA also meets ISO 7637-2 Pulse 1/2a/2b/3a/3b requirements, reinforcing its automotive readiness.
How does the bidirectional configuration of the 1.5KE250CA affect PCB layout and polarity considerations?
The 1.5KE250CA is inherently bidirectional, meaning its electrical behavior is identical in both directions - no anode/cathode distinction affects clamping performance. While the DO-201 package includes a cathode band marking, it serves only mechanical orientation reference and carries no functional polarity. This allows unrestricted placement on PCBs, eliminating orientation errors and simplifying automated assembly. The 1.5KE250CA thus supports floating-bus, AC-coupled, and differential signal line protection without additional components.
What is the working stand-off voltage (VWM) of the 1.5KE250CA, and why is it important for system design?
The 1.5KE250CA has a working stand-off voltage (VWM) of 202V, which represents the maximum continuous DC or RMS voltage the device can block without entering avalanche conduction. This parameter establishes the safe operating margin below the 225–275V breakdown range and ensures minimal leakage (<1μA) during normal operation. For system design, VWM must exceed the highest expected steady-state rail voltage - e.g., 202V supports reliable use on 170VDC industrial buses or 140VDC automotive high-voltage auxiliary supplies.
Does the 1.5KE250CA meet international environmental compliance standards?
Yes, the 1.5KE250CA is RoHS compliant and halogen-free per IEC 61249-2-21. Taiwan Semiconductor confirms full adherence to the EU Restriction of Hazardous Substances Directive 2011/65/EU, with no lead, mercury, cadmium, hexavalent chromium, PBB, or PBDE content above threshold limits. The molding compound is UL 94V-0 rated, and tin-plated leads comply with J-STD-002 for solderability - ensuring compatibility with lead-free reflow processes and global environmental regulations.
1.5KE250CA A0G Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Package/Case:
- DO-201AA, DO-27, Axial
- Series:
- 1.5KE
- Packaging:
- Tape & Box (TB)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 214V
- Voltage - Breakdown (Min):
- 237V
- Voltage - Clamping (Max) @ Ipp:
- 344V
- Current - Peak Pulse (10/1000µs):
- 4.5A
- 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
1.5KE250CA A0G FAQ
1.How can I place an order for 1.5KE250CA A0G through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5KE250CA A0G 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 1.5KE250CA A0G reliable?
The price and inventory of 1.5KE250CA A0G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5KE250CA A0G is usually 5 days.
3.What payment methods are accepted for 1.5KE250CA A0G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5KE250CA A0G transactions.
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4.How is shipping managed for 1.5KE250CA A0G?
1.5KE250CA A0G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5KE250CA A0G 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 1.5KE250CA A0G?
For technical support, including 1.5KE250CA A0G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5KE250CA A0G requirements.
6.How does Aetrix verify that 1.5KE250CA A0G is sourced from the original manufacturer or authorized distributors?
All 1.5KE250CA A0G 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 1.5KE250CA A0G meets industry standards.
7.What is the process for return or replacement of 1.5KE250CA A0G?
All 1.5KE250CA A0G units undergo pre-shipment inspection (PSI). If there is an issue with 1.5KE250CA A0G, 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 1.5KE250CA A0G part is unused and in its original packaging.
Return procedure for 1.5KE250CA A0G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5KE250CA A0G Tags
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