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Taiwan Semiconductor Corporation 1.5KE11A
- Part No.:
- 1.5KE11A
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-201AA, DO-27, Axial
- Datasheet:
-
1.5KE11A.pdf
- Description:
- TVS DIODE 9.4VWM 15.6VC DO201
- Quantity:
- Payment:
- Shipping:
Inventory:3,881
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Product details
Overview
1.5KE11A from Taiwan Semiconductor is a unidirectional 1500W transient voltage suppressor (TVS) diode with a nominal breakdown voltage of 11V, working stand-off voltage of 9.40V, clamping voltage of 15.6V at 1A peak impulse current, and DO-201 axial package. It protects automotive and industrial power rails against ISO 7637-2 Pulse 1/2a/2b/3a/3b transients.
For engineers reviewing the 1.5KE11A datasheet, 1.5KE11A pinout, 1.5KE11A application, or 1.5KE11A equivalent, this part delivers AEC-Q101-qualified surge immunity for 12V/24V systems, low-leakage operation (<1µA above 10V), sub-1ps response to voltage transients, and robust 175°C junction temperature rating.
Technical Context
The 1.5KE11A operates as a unidirectional avalanche diode, triggering when reverse voltage exceeds its 10.5–11.6V breakdown range at 1mA test current. Its 15.6V clamping voltage limits downstream voltage stress during 10/1000µs surges up to 1A, while maintaining <1µA leakage at 9.40V working stand-off voltage.
Designed for high-energy transient suppression in automotive and industrial environments, it meets ISO 7637-2 immunity requirements and supports steady-state dissipation of 5W at 75°C lead temperature. The DO-201 package enables through-hole mounting on copper pads per JESD 201 Class 2 whisker compliance.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR @ IT = 1mA | 10.5–11.6V - precise avalanche conduction threshold ensuring reliable turn-on before system damage |
| VWM | 9.40V - maximum continuous reverse operating voltage without significant leakage |
| VC @ IPP = 1A | 15.6V - peak clamped voltage limiting downstream IC stress during 10/1000µs surge events |
| PPK | 1500W - single-pulse surge power handling capability per JEDEC standard waveform |
| IPP max | 1A - maximum non-repetitive peak impulse current supported at rated clamping voltage |
| TJ max | +175°C - extended junction temperature rating enabling under-hood and industrial ambient use |
| Response time | <1.0ps - ultrafast avalanche initiation critical for protecting fast-switching power electronics |
Pinout & Package
DO-201 axial package with cathode band marking; leads are pure tin plated, solderable per J-STD-002, and meet UL 94V-0 flammability rating.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current path / low-side reference node | Connected to ground or low-voltage rail in unidirectional clamp configuration |
| Cathode | Reverse-biased surge input / protected line connection | Connected to power rail or signal line requiring transient protection; marked by band |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing |
| 1500W 10/1000µs surge rating | Withstands high-energy load dump and inductive switching events without degradation |
| Clamping ratio VC/VBR ≈ 1.43 | Low overvoltage margin ensures minimal stress on downstream 12V-rated components |
| Leakage current <1µA @ 9.40V | Negligible standby power loss and no interference with low-power sensor or control circuits |
| ISO 7637-2 compliant | Validated against Pulse 1 (inductive load disconnect), Pulse 2a/2b (switching transients), and Pulse 3a/3b (line impedance coupling) |
Applications
| Automotive Power Rail Protection | Industrial PLC Input Protection |
|---|---|
Use Scenario: 12V battery line in engine control unit exposed to load dump and alternator ripple. IC Role / Device Role / Timing Role: Unidirectional TVS clamping transient spikes before they reach MCU power supply pins. Use Value: Limits voltage to ≤15.6V during 10/1000µs surges, preventing latch-up or gate oxide damage in 12V-tolerant logic. |
Use Scenario: 24V DC input terminal of programmable logic controller subject to relay coil flyback and EFT bursts. IC Role / Device Role / Timing Role: Primary front-end surge suppressor absorbing energy before upstream filter capacitors. Use Value: Withstands ≥1A impulse current while holding clamped voltage below 16V, preserving input regulator integrity. |
| LED Driver Overvoltage Clamp | Motor Control Board Surge Suppression |
Use Scenario: Constant-current LED driver in commercial lighting subjected to lightning-induced surges on AC mains input. IC Role / Device Role / Timing Role: Secondary-level DC bus protector after bridge rectifier and bulk capacitor. Use Value: Responds in <1ps to clamp 1500W transients, avoiding thermal runaway in LED strings rated for 12–15V operation. |
Use Scenario: H-bridge gate driver supply rail in brushed DC motor controller experiencing inductive kickback. IC Role / Device Role / Timing Role: Fast-acting shunt device diverting flyback energy away from half-bridge drivers and sense resistors. Use Value: Clamps to 15.6V within nanoseconds, preventing overvoltage failure of 20V-rated MOSFET gate oxides and op-amp inputs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ11A | Lower peak power (600W), SMC package, 11.1V VBR min, 17.0V VC @ 35A | Higher clamping voltage and lower surge capacity; suited for space-constrained PCBs with moderate transients | Select SMBJ11A only if board layout requires surface-mount and surge energy remains below 600W |
| 1N6272A (same as 1.5KE11A) | JEDEC-registered equivalent; identical electrical specs, DO-201 package, same AEC-Q101 qualification | No functional or mechanical difference - dual-marking variant used interchangeably in BOMs | 1N6272A is a direct JEDEC identity match; no design change required when substituting for 1.5KE11A |
Compared with SMBJ11A, the 1.5KE11A provides 2.5× higher surge power handling and tighter clamping (15.6V vs. 17.0V), making it preferable for automotive load dump; compared with 1N6272A, it is electrically and mechanically identical - a manufacturer-specific marking variant with full cross-compatibility.
Availability
1.5KE11A is available at Aetrix Electronics and suitable for automotive ECUs, industrial PLCs, LED lighting drivers, and motor control boards requiring stable component supply with AEC-Q101 qualification and DO-201 through-hole compatibility.
Supply support for 1.5KE11A 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 developed specifically for high-reliability transient suppression in harsh environments, emphasizing AEC-Q101 qualification, ISO 7637-2 compliance, and robust DO-201 packaging for under-hood and factory-floor deployment.
FAQ
What is the breakdown voltage tolerance for the 1.5KE11A?
The 1.5KE11A has a guaranteed breakdown voltage range of 10.5V to 11.6V at 1mA test current, as specified in the Electrical Specifications table. This ±5% tolerance ensures consistent clamping behavior across production lots and supports reliable design margins for 12V system protection.
Is the 1.5KE11A suitable for bidirectional transient protection?
No, the 1.5KE11A is a unidirectional TVS diode intended for DC rail protection with defined anode-cathode polarity. For bidirectional applications, TSC offers the 1.5KE11CA variant - the 1.5KE11A itself lacks symmetrical breakdown characteristics and must be oriented with cathode toward the protected line.
What is the maximum clamping voltage of the 1.5KE11A under surge conditions?
The 1.5KE11A clamps to a maximum of 15.6V when subjected to a 1A peak impulse current with a 10/1000µs waveform. This value is measured at TA = 25°C and defines the upper voltage limit imposed on protected circuitry during standardized surge events.
Does the 1.5KE11A meet automotive qualification standards?
Yes, the 1.5KE11A is AEC-Q101 qualified and explicitly validated for automotive applications. It complies with ISO 7637-2 Pulse 1, 2a, 2b, 3a, and 3b test profiles, confirming suitability for 12V/24V vehicle electrical systems including engine control, body electronics, and infotainment modules.
What is the thermal derating behavior of the 1.5KE11A above 25°C ambient?
The 1.5KE11A follows the standard JEDEC pulse derating curve: peak pulse power drops linearly from 1500W at 25°C to zero at 175°C junction temperature. At 75°C ambient with 0.375" lead length on 16mm² copper pad, steady-state power dissipation is rated at 5W - critical for sustained surge duty cycles.
1.5KE11A 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):
- 9.4V
- Voltage - Breakdown (Min):
- 10.5V
- Voltage - Clamping (Max) @ Ipp:
- 15.6V
- Current - Peak Pulse (10/1000µs):
- 100A
- 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
1.5KE11A FAQ
1.How can I place an order for 1.5KE11A through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5KE11A 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 1.5KE11A reliable?
The price and inventory of 1.5KE11A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5KE11A is usually 5 days.
3.What payment methods are accepted for 1.5KE11A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5KE11A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5KE11A?
1.5KE11A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5KE11A 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 1.5KE11A?
For technical support, including 1.5KE11A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5KE11A requirements.
6.How does Aetrix verify that 1.5KE11A is sourced from the original manufacturer or authorized distributors?
All 1.5KE11A 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 1.5KE11A meets industry standards.
7.What is the process for return or replacement of 1.5KE11A?
All 1.5KE11A units undergo pre-shipment inspection (PSI). If there is an issue with 1.5KE11A, 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 1.5KE11A part is unused and in its original packaging.
Return procedure for 1.5KE11A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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