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Taiwan Semiconductor Corporation 1.5KE15
- Part No.:
- 1.5KE15
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-201AA, DO-27, Axial
- Datasheet:
-
1.5KE15.pdf
- Description:
- 1500W, 15V, 10%, UNIDIRECTIONAL,
- Quantity:
- Payment:
- Shipping:
Inventory:4,594
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Product details
Overview
1.5KE15 from Taiwan Semiconductor is a unidirectional 1500W transient voltage suppressor (TVS) diode in DO-201 package, with nominal breakdown voltage 15 V, minimum VBR 13.5 V at 1.0 mA test current, maximum clamping voltage 22.0 V at 71 A peak pulse current, and working stand-off voltage 12.1 V. It protects automotive and industrial power rails against ISO 7637-2 Pulse 1/2a/2b/3a/3b transients.
For engineers reviewing the 1.5KE15 datasheet, 1.5KE15 pinout, 1.5KE15 application, or 1.5KE15 equivalent, this part serves as a high-energy unidirectional TVS for DC power line surge suppression where fast response (<1.0 ps), low dynamic impedance, and AEC-Q101 qualification (in H-suffix variants) are critical selection criteria.
Technical Context
The 1.5KE15 operates as a silicon avalanche diode with precise breakdown threshold and controlled clamping behavior under 10/1000 μs surge waveforms. Its junction temperature range spans −55 °C to +175 °C, and it delivers 1500 W peak pulse power at TA = 25 °C, derating linearly above that ambient.
It exhibits typical reverse leakage <1 μA at 12.1 V (VWM), forward voltage ≤3.5 V at 50 A (for VBR ≤200 V), and temperature coefficient of VBR = 0.084 %/°C - enabling stable overvoltage protection across wide thermal operating conditions in automotive and industrial environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 13.5 V / 16.5 V at 1.0 mA - defines reliable turn-on threshold for transient clamping |
| VWM | 12.1 V - maximum continuous DC or RMS voltage the device blocks without significant leakage |
| VC @ IPP | 22.0 V at 71 A - clamping voltage during 10/1000 μs surge, limiting downstream voltage stress |
| PPK | 1500 W - peak surge power handling capability per single non-repetitive 10/1000 μs pulse |
| IPP | 71 A - maximum peak impulse current the device safely clamps without failure |
| TJMAX | +175 °C - maximum junction temperature, supporting operation in under-hood automotive locations |
| Package | DO-201 - industry-standard axial-leaded package with tin-plated leads, UL 94V-0 molding compound |
Pinout & Package
DO-201 package: axial-leaded, cylindrical epoxy body with cathode band marking for unidirectional polarity. Leads are pure tin-plated, solderable per J-STD-002; weight ≈ 0.090 g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Ground-reference terminal | Connected to system ground or low-side return path; forms cathode-to-anode avalanche conduction path during overvoltage |
| Cathode | Protected-line terminal | Connected to the line being protected (e.g., 12 V battery rail); carries full surge current into ground during clamping |
Key Features
| Feature | Design Value |
|---|---|
| 1500 W surge rating (10/1000 μs) | Enables robust protection against severe load dump and inductive switching events in 12 V automotive systems |
| Clamping voltage ≤22.0 V at 71 A | Keeps downstream ICs (e.g., MCUs, CAN transceivers) within absolute maximum ratings during transients |
| Response time <1.0 ps | Ensures clamping initiates before transient energy couples into sensitive circuitry |
| AEC-Q101 qualified (H-suffix variants) | Validated for automotive-grade reliability including temperature cycling, humidity, and mechanical shock |
| Meets ISO 7637-2 Pulse 1/2a/2b/3a/3b | Complies with OEM-level EMC immunity requirements for vehicle power networks |
Applications
| Automotive Power Rail Protection | Industrial DC Power Input |
|---|---|
Use Scenario: Suppressing load dump pulses (ISO 7637-2 Pulse 5a) on 12 V battery-fed ECUs. IC Role / Device Role / Timing Role: Unidirectional TVS placed between battery rail and ground, clamping surges within nanoseconds. Use Value: Limits voltage seen by downstream regulators and microcontrollers to ≤22.0 V, preventing latch-up or oxide damage. |
Use Scenario: Protecting programmable logic controllers (PLCs) from inductive kickback on 24 V DC inputs. IC Role / Device Role / Timing Role: Standoff protector on field-wiring terminals, absorbing repetitive switching transients. Use Value: Sustains 1500 W surge capability without degradation, ensuring long-term reliability in factory automation. |
| LED Driver Overvoltage Protection | Telecom Power Interface |
Use Scenario: Safeguarding constant-current LED drivers from supply-line transients in streetlight systems. IC Role / Device Role / Timing Role: Primary clamping element on input stage, positioned upstream of EMI filter and converter. Use Value: Low VWM (12.1 V) allows compatibility with 12 V nominal LED bus while maintaining margin to VBR. |
Use Scenario: Front-end surge protection for PoE-powered devices connected to unshielded twisted-pair lines. IC Role / Device Role / Timing Role: First-line defense against lightning-induced surges coupled onto data/power pairs. Use Value: Fast response and low dynamic impedance minimize let-through energy to downstream Ethernet PHY and DC-DC stages. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ15A | 600 W rating, SMC (DO-214AB) package, lower IPP (38.8 A), same VBR range (13.3–16.7 V) | Lower surge capacity; suited for space-constrained PCBs where 1500 W is not required | Select SMBJ15A when board area is limited and peak surge energy is ≤600 W |
| 1N6275A | Same family, tighter VBR tolerance (14.3–15.8 V vs. 13.5–16.5 V), identical DO-201 package and 1500 W rating | Higher production consistency in breakdown voltage; preferred for designs requiring tighter clamping predictability | Choose 1N6275A when VBR distribution control is critical for margin analysis |
Compared with 1.5KE15, SMBJ15A offers smaller footprint but reduced surge handling, while 1N6275A provides tighter VBR tolerance without sacrificing power rating or package compatibility - enabling more deterministic worst-case clamping analysis in safety-critical designs.
Availability
1.5KE15 is available at Aetrix Electronics and suitable for automotive electronics, industrial PLCs, LED lighting systems, and telecom power interfaces requiring stable component supply with traceable sourcing and lifecycle continuity.
Supply support for 1.5KE15 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 power management, protection, and signal conditioning devices.
The 1.5KE series was designed specifically for high-energy transient suppression in automotive and industrial power systems, emphasizing AEC-Q101 compliance, ISO 7637-2 immunity, and robust thermal performance in DO-201 packaging.
FAQ
What is the maximum clamping voltage of the 1.5KE15 under standard surge conditions?
The 1.5KE15 has a maximum clamping voltage (VC) of 22.0 V at 71 A peak pulse current (IPP) under the 10/1000 μs waveform defined in IEC 61000-4-5 and ISO 7637-2. This value is measured at TA = 25 °C and ensures downstream components remain within safe operating voltage limits during transient events. The 1.5KE15 maintains this clamping performance across its specified junction temperature range.
Is the 1.5KE15 unidirectional or bidirectional, and how is polarity identified?
The 1.5KE15 is a unidirectional TVS diode, intended for DC line protection where polarity is fixed. Polarity is marked by a cathode band on the DO-201 package body - the banded end connects to the protected line (e.g., 12 V rail), and the unbanded end connects to ground. Bidirectional variants use "CA" suffixes (e.g., 1.5KE15CA), which are distinct part numbers not applicable to the 1.5KE15.
Does the 1.5KE15 meet automotive qualification standards?
The base 1.5KE15 is not AEC-Q101 qualified; however, the 1.5KE15H variant (with "H" suffix) is explicitly AEC-Q101 qualified and meets stress test requirements for temperature cycling, humidity, mechanical shock, and accelerated life testing. Engineers designing for automotive applications should specify 1.5KE15H to ensure compliance - the 1.5KE15 itself is suitable for industrial and commercial use where AEC-Q101 is not mandated.
What is the working stand-off voltage (VWM) of the 1.5KE15, and why does it matter?
The 1.5KE15 has a working stand-off voltage (VWM) of 12.1 V - the maximum continuous DC or RMS voltage it can block without exceeding 1 μA leakage. This parameter ensures the device remains non-conductive during normal operation while allowing sufficient margin below VBR (13.5 V min) to avoid false triggering. It directly determines compatibility with 12 V nominal systems where transient headroom must be preserved.
Can the 1.5KE15 be used in place of the 1N6275 or 1N6275A?
Yes - the 1.5KE15 is the industry-standard JEDEC-registered equivalent of 1N6275, and 1.5KE15A corresponds to 1N6275A. Both share identical electrical specifications, DO-201 packaging, and mechanical dimensions. The 1.5KE15 and 1N6275 are functionally interchangeable; the 1.5KE15A and 1N6275A offer tighter VBR tolerance. No PCB layout changes are needed when substituting within the same suffix group.
1.5KE15 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):
- 12.1V
- Voltage - Breakdown (Min):
- 13.5V
- Voltage - Clamping (Max) @ Ipp:
- 22V
- Current - Peak Pulse (10/1000µs):
- 71A
- Power - Peak Pulse:
- 1500W (1.5kW)
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 175°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Through Hole
- Supplier Device Package:
- DO-201
1.5KE15 FAQ
1.How can I place an order for 1.5KE15 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5KE15 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 1.5KE15 reliable?
The price and inventory of 1.5KE15 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5KE15 is usually 5 days.
3.What payment methods are accepted for 1.5KE15?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5KE15 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5KE15?
1.5KE15 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5KE15 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 1.5KE15?
For technical support, including 1.5KE15 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5KE15 requirements.
6.How does Aetrix verify that 1.5KE15 is sourced from the original manufacturer or authorized distributors?
All 1.5KE15 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 1.5KE15 meets industry standards.
7.What is the process for return or replacement of 1.5KE15?
All 1.5KE15 units undergo pre-shipment inspection (PSI). If there is an issue with 1.5KE15, 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 1.5KE15 part is unused and in its original packaging.
Return procedure for 1.5KE15:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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