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Taiwan Semiconductor Corporation 1.5KE15A
- Part No.:
- 1.5KE15A
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-201AA, DO-27, Axial
- Datasheet:
-
1.5KE15A.pdf
- Description:
- TVS 1500W 15.1V 5% UNIDIR DO-201
- Quantity:
- Payment:
- Shipping:
Inventory:6,942
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Product details
Overview
1.5KE15A from Taiwan Semiconductor is a unidirectional 1500W transient voltage suppressor (TVS) diode in DO-201 package, with nominal breakdown voltage 15 V, minimum VBR 14.3 V at 1.0 mA test current, maximum clamping voltage 21.2 V at 74 A peak pulse current, and working stand-off voltage 12.8 V - designed for automotive and industrial circuit protection against ISO 7637-2 Pulse 1/2a/2b/3a/3b transients.
For engineers reviewing the 1.5KE15A datasheet, 1.5KE15A pinout, 1.5KE15A application, or 1.5KE15A equivalent, this part serves as a high-energy, low-leakage (≤1 µA @ 12.8 V), fast-response (<1.0 ps rise time) unidirectional TVS for DC power rail and signal line surge suppression in ECU, lighting control, and sensor interface circuits.
Technical Context
The 1.5KE15A operates as a silicon avalanche diode, clamping transient overvoltages by entering avalanche breakdown when reverse voltage exceeds VBR. Its unidirectional polarity enables integration into DC-biased lines without forward conduction during normal operation.
It delivers 1500 W peak pulse power at 10/1000 µs waveform, supports 200 A non-repetitive forward surge current (IFSM), and maintains thermal stability up to TJ = +175 °C - validated per AEC-Q101 qualification for automotive under-hood environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min) | 14.3 V at IT = 1.0 mA - ensures reliable avalanche initiation above system operating voltage. |
| VWM | 12.8 V - maximum continuous reverse voltage before leakage exceeds 1 µA, compatible with 12 V automotive systems. |
| VC @ IPP | 21.2 V at IPP = 74 A - clamping voltage limits downstream IC stress during 10/1000 µs surge events. |
| PPK | 1500 W - peak pulse power rating defines energy-handling capability for ISO 7637-2 compliance. |
| IR @ VWM | <1 µA - ultra-low leakage preserves battery life and avoids false triggering in always-on circuits. |
| TJ max | +175 °C - junction temperature rating enables placement near heat sources in engine control units. |
Pinout & Package
Package: DO-201 axial leaded package with cathode band marking; body length 9.5 mm, diameter 5.6 mm; pure tin-plated leads compliant with J-STD-002 solderability and JESD201 Class 2 whisker resistance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Ground reference terminal | Connected to system ground or low-side return path; carries full surge current during clamping. |
| Cathode | Protected line input | Connected to protected node (e.g., 12 V rail); reverse-biased during normal operation, avalanches during overvoltage. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive under-hood use including temperature cycling, humidity, and mechanical shock per JEDEC standards. |
| 10/1000 µs waveform rating | 1500 W peak power handling matches ISO 7637-2 Pulse 5a (load dump) and Pulse 1/2/3 immunity test profiles. |
| Clamping ratio (VC/VBR) | 1.49 (21.2 V / 14.3 V) - low ratio minimizes voltage overshoot on protected ICs during transient events. |
| Dynamic impedance | <0.1 Ω (calculated from ΔVC/ΔIPP) - ensures stable clamping across surge current range. |
| RoHS & halogen-free | Compliant with IEC 61249-2-21 and EU RoHS Directive 2011/65/EU - suitable for green manufacturing and export. |
Applications
| Automotive Engine Control Unit (ECU) | LED Headlamp Driver Protection |
|---|---|
Use Scenario: Protects microcontroller I/O and CAN transceiver power rails from load dump and inductive switching transients in 12 V vehicle electrical systems. IC Role / Device Role / Timing Role: Unidirectional TVS placed between 12 V supply and ground, clamping surges within 1 ps to prevent latch-up or gate oxide damage. Use Value: Enables compliance with ISO 7637-2 Pulse 5a (load dump up to 60 V, 400 ms) while maintaining <1 µA leakage at 12.8 V stand-off. |
Use Scenario: Shields constant-current LED driver ICs from flyback voltage spikes generated by relay or MOSFET switching in headlamp modules. IC Role / Device Role / Timing Role: Connected across driver output terminals to clamp inductive kickback before it reaches sensitive analog current-sense circuitry. Use Value: Limits clamping voltage to 21.2 V, well below typical LED driver IC absolute maximum ratings (e.g., 36 V), preventing catastrophic failure. |
| Industrial PLC Digital Input Module | Smart Sensor Signal Conditioning |
Use Scenario: Guards 24 V DC digital input channels against ESD and field-wiring induced transients in factory automation cabinets. IC Role / Device Role / Timing Role: Mounted at connector entry point, shunting surge energy to chassis ground before reaching optocoupler or level-shifter ICs. Use Value: Withstands 74 A peak impulse current (10/1000 µs), exceeding IEC 61000-4-5 Level 4 (4 kV, ~100 A) requirements for industrial environments. |
Use Scenario: Protects precision ADC front-end and analog sensor interface ICs from EFT bursts during communication over long cables in building automation. IC Role / Device Role / Timing Role: Placed across differential sensor lines (e.g., 4–20 mA loop supply) to suppress common-mode transients without affecting signal integrity. Use Value: Junction capacitance <100 pF (typ.) avoids signal distortion at frequencies up to 1 MHz, preserving sensor bandwidth. |
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 SMAJ15A | Same DO-214AC (SMA) package; lower PPK = 400 W; VC = 24.4 V @ 16.4 A; higher VWM = 12.8 V but lower surge capacity. | Not rated for AEC-Q101; limited to consumer/industrial grade; insufficient for ISO 7637-2 Pulse 5a load dump. | Select only for cost-sensitive, non-automotive designs where 400 W surge margin suffices. |
| ON Semiconductor 1.5SMC15A | DO-214AB (SMC) package; same 1500 W rating; VBR min = 14.3 V; VC = 24.4 V @ 61.5 A; slightly higher clamping voltage. | Also AEC-Q101 qualified; larger footprint (7.1 × 6.2 mm vs. DO-201's 9.5 × 5.6 mm) may require PCB rework. | Choose when board space allows larger SMC package and higher clamping voltage is acceptable. |
Compared with 1.5KE15A, SMAJ15A offers smaller size but inadequate surge rating for automotive use, while 1.5SMC15A matches power handling and qualification but requires layout change due to larger SMC package and delivers 15% higher clamping voltage - making 1.5KE15A optimal for space-constrained, high-reliability 12 V rail protection.
Availability
1.5KE15A is available at Aetrix Electronics and suitable for automotive ECU design, LED lighting control, and industrial PLC input protection requiring stable component supply, AEC-Q101 qualification, and ISO 7637-2 compliance.
Supply support for 1.5KE15A 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 headquartered in Hsinchu, Taiwan, specializing in discrete power devices, TVS diodes, rectifiers, and thyristors since 1979.
The 1.5KE series was developed specifically for high-energy transient suppression in automotive and industrial environments, emphasizing AEC-Q101 reliability, tight VBR tolerance, and robust DO-201 packaging for under-hood deployment.
FAQ
What is the polarity configuration of the 1.5KE15A?
The 1.5KE15A is a unidirectional TVS diode, featuring anode and cathode terminals marked by a cathode band on the DO-201 body. It conducts only in reverse bias during overvoltage events and blocks forward current up to 3.5 V at 50 A, as specified in its absolute maximum ratings. This polarity makes the 1.5KE15A suitable for DC power line protection where polarity is fixed.
Does the 1.5KE15A meet AEC-Q101 qualification?
Yes, the 1.5KE15A is explicitly AEC-Q101 qualified, as confirmed in the product series documentation and ordering code suffix "A" (1.5KE15A). This qualification covers stress tests including temperature cycling, high-temperature operating life, and mechanical shock - validating its suitability for automotive under-hood applications such as engine control units and body electronics.
What is the maximum clamping voltage of the 1.5KE15A at rated surge current?
The maximum clamping voltage (VC) of the 1.5KE15A is 21.2 V at peak pulse current (IPP) of 74 A, measured under the standard 10/1000 µs double-exponential waveform. This value is guaranteed across temperature and ensures protected ICs experience no more than 21.2 V during worst-case transients, critical for safeguarding 24 V-tolerant logic and analog components.
How does the 1.5KE15A compare to bidirectional variants like 1.5KE15CA?
The 1.5KE15A is unidirectional and intended for DC-biased lines, whereas 1.5KE15CA is bidirectional and suited for AC or floating signal lines. The 1.5KE15A has lower leakage (<1 µA @ 12.8 V) and lower forward voltage (3.5 V @ 50 A), but cannot suppress positive transients on grounded lines - unlike 1.5KE15CA, which clamps in both directions. Use 1.5KE15A only where polarity is known and fixed.
What packaging options are available for the 1.5KE15A?
The 1.5KE15A is supplied in DO-201 axial package, available in two standard configurations: 1,250 pieces per tape-and-reel (ordering code 1.5KE15AH) and 500 pieces per ammo box (ordering code 1.5KE15AA0G). Both options feature pure tin-plated leads, UL 94V-0 molding compound, and comply with J-STD-002 solderability requirements.
1.5KE15A 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:
- Active
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 12.8V
- Voltage - Breakdown (Min):
- 14.3V
- Voltage - Clamping (Max) @ Ipp:
- 21.2V
- Current - Peak Pulse (10/1000µs):
- 74A
- 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
1.5KE15A FAQ
1.How can I place an order for 1.5KE15A through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5KE15A 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 1.5KE15A reliable?
The price and inventory of 1.5KE15A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5KE15A is usually 5 days.
3.What payment methods are accepted for 1.5KE15A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5KE15A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5KE15A?
1.5KE15A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5KE15A 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 1.5KE15A?
For technical support, including 1.5KE15A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5KE15A requirements.
6.How does Aetrix verify that 1.5KE15A is sourced from the original manufacturer or authorized distributors?
All 1.5KE15A 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 1.5KE15A meets industry standards.
7.What is the process for return or replacement of 1.5KE15A?
All 1.5KE15A units undergo pre-shipment inspection (PSI). If there is an issue with 1.5KE15A, 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 1.5KE15A part is unused and in its original packaging.
Return procedure for 1.5KE15A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5KE15A Tags
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