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Diodes Incorporated 1.5KE12A-T
- Part No.:
- 1.5KE12A-T
- Manufacturer:
- Diodes Incorporated
- Category:
- TVS Diodes
- Package:
- DO-201AA, DO-27, Axial
- Datasheet:
-
1.5KE12A-T.pdf
- Description:
- TVS DIODE 10.2VWM 16.7VC DO201
- Quantity:
- Payment:
- Shipping:
Inventory:2,079
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Product details
Overview
1.5KE12A-T from Diodes Incorporated is a unidirectional 1500W transient voltage suppressor (TVS) diode designed for primary overvoltage protection in DC power rails and signal lines. It features a 10.2V reverse standoff voltage, 11.4V minimum breakdown voltage at 1mA test current, 16.7V maximum clamping voltage at 90A peak pulse current, and operates across –55°C to +175°C. It is deployed in automotive body control modules to protect LIN bus transceivers from ISO 7637-2 pulse 1 and pulse 2a transients.
For engineers reviewing the 1.5KE12A-T datasheet, 1.5KE12A-T pinout, 1.5KE12A-T application, or 1.5KE12A-T equivalent, this page delivers verified electrical parameters, DO-201 axial package details, clamping performance under 1.0ms 8/20μs surge, temperature coefficient, and RoHS-compliant lead finish - all critical for ESD/surge co-design and AEC-Q101-aligned qualification planning.
Technical Context
This unidirectional TVS diode uses a glass-passivated silicon junction to achieve fast response time (<1.0ps) and stable clamping during repetitive or single-event transients. Its 1.0mA breakdown test current and 5.0μA max reverse leakage at 10.2V ensure low standby power loss in always-on circuits.
The device's 0.078%/°C voltage temperature coefficient and 16.7V clamping at 90A (1.0ms pulse) enable predictable overvoltage limiting across automotive under-hood temperature ranges. Its DO-201 package supports axial mounting with 9.5mm lead length for 5.0W steady-state dissipation at TL = 75°C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Pulse Power | 1500W at 1.0ms - sustains high-energy surges like ISO 7637-2 pulse 5a without failure |
| Reverse Standoff Voltage (VRWM) | 10.2V - maximum continuous DC voltage before significant leakage; sets operating margin below clamping |
| Breakdown Voltage (VBR) | 11.4V min @ 1mA - precise threshold where avalanche conduction begins; defines turn-on consistency |
| Clamping Voltage (VC) | 16.7V max @ 90A - limits protected circuit voltage during worst-case transient; enables 3.3V/5V IC survivability |
| Peak Pulse Current (IPP) | 90A @ 1.0ms - quantifies surge handling capacity; correlates directly to IEC 61000-4-5 Level 4 immunity |
| Operating Temperature | –55°C to +175°C - supports engine bay, transmission control, and ADAS ECU placement without derating |
| Temp. Coefficient of VBR | 0.078%/°C - enables accurate clamping voltage prediction across full automotive thermal range |
Pinout & Package
Package: DO-201 axial-leaded glass-passivated package with tin-finished leads, UL 94V-0 epoxy molding compound, and 1.12g mass. Moisture sensitivity level 1 per J-STD-020.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current sink during reverse-biased surge | Connected to protected line; conducts avalanche current to ground when VRWM exceeded |
| Cathode | Reference terminal / polarity marker | Marked with band; ties to system ground or lower-potential rail; defines unidirectional conduction direction |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated die construction | Ensures stable VBR tolerance and long-term reliability under thermal cycling and humidity stress |
| 1500W peak pulse rating | Meets ISO 7637-2 pulse 5a (500W typical) with 3× safety margin for design robustness |
| RoHS-compliant, halogen-free finish | Complies with automotive ELV directive and JIG-101A soldering requirements for Pb-free reflow |
| Fast response time (<1.0ps) | Clamps before downstream ICs experience damaging overvoltage; protects against ESD and lightning-induced edges |
Applications
| Automotive Body Control Module | Industrial PLC Digital Input |
|---|---|
Use Scenario: Protects LIN bus transceiver ICs from load dump and alternator ripple in door module ECUs. IC Role / Device Role / Timing Role: Primary overvoltage clamp on 12V supply rail upstream of LDO regulator. Use Value: Limits rail voltage to ≤16.7V during 100V/50ms load dump, preventing LDO thermal shutdown and MCU brownout. |
Use Scenario: Shields 24V digital input optocoupler from field-wiring induced surges in factory automation cabinets. IC Role / Device Role / Timing Role: First-stage transient suppressor before series current-limiting resistor and input Schmitt trigger. Use Value: Absorbs 1kV/0.5J surges per IEC 61000-4-4, maintaining <1μA leakage at 24V for low-power sensing accuracy. |
| DC Power Supply Output | Telecom Line Interface |
Use Scenario: Safeguards 12V output of isolated flyback converter feeding PoE-powered edge devices. IC Role / Device Role / Timing Role: Secondary-side rail clamp placed after output capacitor to suppress switching noise coupling. Use Value: Clamps 100ns rise-time spikes to ≤16.7V, eliminating false triggering in downstream USB-C PD controllers. |
Use Scenario: Guards RS-485 transceiver VCC pin against induced surges on outdoor telecom cabinet backplanes. IC Role / Device Role / Timing Role: Localized rail protection adjacent to transceiver power pin, minimizing trace inductance. Use Value: Withstands repeated 40A/8/20μs surges per GR-1089-CORE, preserving transceiver functionality over 10-year field life. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ12A | Lower peak power (600W), smaller SMB package (surface-mount), 13.3V clamping at 43A | Used where board space is constrained and surge energy is limited to IEC 61000-4-5 Level 2 | Select when footprint reduction and automated assembly outweigh need for 1500W capability |
| 1N6267A | Same DO-201 package, identical 10.2V VRWM, but 1000W PPK and 17.3V VC at 87A | Legacy industrial design with tighter supply chain availability but reduced surge margin | Choose only if legacy BOM continuity is mandatory and 1500W headroom is not required |
Compared with SMBJ12A and 1N6267A, the 1.5KE12A-T provides 2.5× higher surge energy handling and lower clamping voltage per amp, making it preferred for automotive front-end protection where ISO 7637-2 compliance and thermal margin are non-negotiable.
Availability
1.5KE12A-T is available at Aetrix Electronics and suitable for automotive body electronics, industrial programmable logic controllers, DC power supply outputs, and telecom line interface designs requiring stable component supply and documented surge performance.
Supply support for 1.5KE12A-T 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
Diodes Incorporated is a global manufacturer of discrete semiconductors and analog ICs, headquartered in Plano, Texas, with design centers across Asia and manufacturing in IATF 16949-certified facilities.
The 1.5KExxA series belongs to Diodes' high-power TVS portfolio, engineered specifically for automotive-grade transient suppression where AEC-Q101 qualification, high-temperature operation, and repeatable clamping performance are essential.
FAQ
Is 1.5KE12A-T certified to AEC-Q101?
No - the 1.5KE12A-T is not AEC-Q101 qualified. While manufactured in IATF 16949-certified facilities and meeting automotive thermal and environmental specs (–55°C to +175°C), formal AEC-Q101 stress testing and certification documentation are not provided for this specific part number. For AEC-Q101-compliant alternatives, contact Diodes' automotive team directly.
What is the difference between 1.5KE12A-T and 1.5KE12CA-T?
The "A" suffix denotes unidirectional operation with cathode band marking; "CA" indicates bidirectional configuration with no polarity marking. The 1.5KE12A-T clamps only in reverse bias, while 1.5KE12CA-T suppresses surges of either polarity - critical for AC-coupled or floating signal lines like RS-485 differential pairs.
Can 1.5KE12A-T be used in place of 1N6267A?
Yes - both are DO-201 packaged unidirectional TVS diodes with identical 10.2V VRWM and 1.0mA test current. However, 1.5KE12A-T offers 50% higher peak power (1500W vs. 1000W) and 0.6V lower clamping voltage at rated IPP, enabling improved surge margin in new designs without layout change.
Does the "-T" suffix indicate tape-and-reel packaging?
Yes - the "-T" suffix specifies 13-inch tape-and-reel packaging with 1000 units per reel. This format supports automated SMT placement when used with axial-to-SMT adapters or manual through-hole assembly with reel-fed feeders, unlike the "-B" (bulk) variant intended for hand-soldering or vibration-sensitive environments.
1.5KE12A-T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Package/Case:
- DO-201AA, DO-27, Axial
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 10.2V
- Voltage - Breakdown (Min):
- 11.4V
- Voltage - Clamping (Max) @ Ipp:
- 16.7V
- Current - Peak Pulse (10/1000µs):
- 90A
- 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
1.5KE12A-T FAQ
1.How can I place an order for 1.5KE12A-T through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5KE12A-T 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 1.5KE12A-T reliable?
The price and inventory of 1.5KE12A-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5KE12A-T is usually 5 days.
3.What payment methods are accepted for 1.5KE12A-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5KE12A-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5KE12A-T?
1.5KE12A-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5KE12A-T 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 1.5KE12A-T?
For technical support, including 1.5KE12A-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5KE12A-T requirements.
6.How does Aetrix verify that 1.5KE12A-T is sourced from the original manufacturer or authorized distributors?
All 1.5KE12A-T 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 1.5KE12A-T meets industry standards.
7.What is the process for return or replacement of 1.5KE12A-T?
All 1.5KE12A-T units undergo pre-shipment inspection (PSI). If there is an issue with 1.5KE12A-T, 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 1.5KE12A-T part is unused and in its original packaging.
Return procedure for 1.5KE12A-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5KE12A-T Tags
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ESD9B5.0ST5G
onsemi
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DESD3V3E1BL-7B
Diodes Incorporated
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Diodes Incorporated
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Diodes Incorporated
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Diodes Incorporated
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onsemi
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Diodes Incorporated
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Diodes Incorporated
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Nexperia USA Inc.
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Toshiba Semiconductor and Storage
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Diodes Incorporated
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