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Diodes Incorporated 1.5KE15CA-T
- Part No.:
- 1.5KE15CA-T
- Manufacturer:
- Diodes Incorporated
- Category:
- TVS Diodes
- Package:
- DO-201AA, DO-27, Axial
- Datasheet:
-
1.5KE15CA-T.pdf
- Description:
- TVS DIODE 12.8VWM 21.2VC DO201
- Quantity:
- Payment:
- Shipping:
Inventory:3,159
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Product details
Overview
1.5KE15CA-T from Diodes Incorporated is a bidirectional 1500W transient voltage suppressor (TVS) diode in DO-201 package, designed for overvoltage protection of DC power lines and signal interfaces. It features a 12.8V reverse standoff voltage, 14.3V minimum breakdown voltage at 1mA test current, 21.2V maximum clamping voltage at 71A peak pulse current, and operates across -55°C to +175°C.
For engineers reviewing the 1.5KE15CA-T datasheet, 1.5KE15CA-T pinout, 1.5KE15CA-T application, or 1.5KE15CA-T equivalent, key selection criteria include clamping voltage margin relative to protected IC VDD, peak pulse current capability under IEC 61000-4-5 surge waveforms, thermal derating above +25°C ambient, and bidirectional polarity suitability for AC-coupled or floating bus protection.
Technical Context
This TVS diode uses a glass-passivated silicon junction to achieve fast sub-nanosecond response time and stable clamping performance under repetitive transients. Its bidirectional configuration enables symmetrical suppression of positive and negative surges without external polarity coordination.
The device is rated for 1500W non-repetitive peak pulse power at 1.0ms duration, with 5.0W steady-state dissipation at 75°C lead temperature. Its 0.084%/°C voltage temperature coefficient ensures predictable VBR drift across industrial operating ranges.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Pulse Power | 1500 W - Withstands IEC 61000-4-5 Combination Wave (1.2/50μs–8/20μs) surges up to 71A without failure |
| Reverse Standoff Voltage | 12.8 V - Maximum continuous DC or RMS voltage before significant leakage; sets protection threshold below system rail |
| Breakdown Voltage | 14.3 V min @ 1mA - Confirmed avalanche onset point; ensures reliable conduction before downstream IC damage |
| Clamping Voltage | 21.2 V max @ 71A - Limits transient voltage seen by protected circuit; provides ≥3.8V margin above 15V nominal rail |
| Operating Temperature | -55°C to +175°C - Supports under-hood automotive, industrial motor drives, and high-ambient power supply designs |
| Leakage Current | 5.0 μA max @ 12.8V - Minimizes standby power loss and avoids false triggering in low-power sensor interfaces |
Pinout & Package
Package: DO-201 axial-leaded epoxy molded case (UL 94V-0), 1.12g mass, tin-plated leads solderable per MIL-STD-202 Method 208. Bidirectional marking: type number only (no cathode band).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Transient current sink (negative surge) | Conducts during negative excursions; forms symmetrical clamping path with cathode |
| Cathode | Transient current sink (positive surge) | Conducts during positive excursions; enables bidirectional protection without external diode pairing |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated die construction | Ensures stable breakdown characteristics and long-term reliability under humidity and thermal cycling stress |
| Bidirectional configuration | Eliminates need for dual unidirectional devices or external polarity management in AC or floating systems |
| 1500W peak pulse rating | Meets Level 4 IEC 61000-4-5 (4kV line-to-line, 2kV line-to-earth) without derating in standard PCB layouts |
| RoHS-compliant & halogen-free | Fulfills EU Directive 2015/863/EU and automotive "Green" requirements (<900ppm Br, <900ppm Cl, <1000ppm Sb) |
Applications
| Industrial Motor Drives | Automotive Body Control Modules |
|---|---|
Use Scenario: Protection of 12V CAN bus transceivers and LIN interfaces against load dump and jump-start transients. IC Role / Device Role / Timing Role: Bidirectional clamping element placed directly at connector entry point to shunt surge energy before reaching PHY layer. Use Value: Clamps 21.2V max at 71A, maintaining transceiver VCC integrity during ISO 7637-2 Pulse 5a (75V/350ms) events. |
Use Scenario: Overvoltage suppression on 12V power rails feeding microcontrollers and sensor signal conditioners in door modules. IC Role / Device Role / Timing Role: Primary front-end TVS on fused battery input, coordinated with downstream ceramic capacitors for sub-100ns response. Use Value: Withstands 1500W pulses while operating from -40°C to +125°C ambient, meeting AEC-Q101 stress test requirements. |
| AC-DC Power Supply Inputs | Telecom Line Interface Cards |
Use Scenario: Secondary-side transient protection on 15V auxiliary bias rails in switch-mode power supplies. IC Role / Device Role / Timing Role: Fast-clamping device placed after bulk capacitor to limit voltage overshoot during MOSFET switching faults. Use Value: 21.2V clamping ensures <3V margin below 24V-rated optocouplers and gate drivers on same rail. |
Use Scenario: Surge protection for RS-485 data lines exposed to lightning-induced surges in outdoor base stations. IC Role / Device Role / Timing Role: Bidirectional TVS connected between differential pair and ground to clamp common-mode transients without disrupting DC bias. Use Value: Symmetrical 14.3V breakdown and 21.2V clamping enable balanced suppression of ±1kV IEC 61000-4-5 surges. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ15CA | Same 15V standoff, but 600W peak power (SMB package); lower 17.0V clamping at 38.8A | Better clamping ratio but lower surge capacity; suited for space-constrained PCBs with moderate surge exposure | Select when board area is limited and IEC 61000-4-5 Level 3 (2kV) suffices |
| 1.5SMC15CA | Same 15V standoff, 1500W rating, but SMC package (surface-mount); 21.2V clamping identical | Enables automated assembly and higher thermal coupling to copper pour; no axial lead bending required | Select when transitioning from through-hole to SMT manufacturing or improving thermal dissipation via PCB copper |
Compared with SMBJ15CA and 1.5SMC15CA, the 1.5KE15CA-T offers identical clamping performance and surge rating in a robust axial-leaded DO-201 package optimized for manual assembly, high-vibration environments, and legacy through-hole designs requiring mechanical retention strength.
Availability
1.5KE15CA-T is available at Aetrix Electronics and suitable for industrial motor drives, automotive body control modules, and AC-DC power supply inputs requiring stable component supply across extended product lifecycles.
Supply support for 1.5KE15CA-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, manufacturing, and sales operations across Asia, Europe, and North America.
The 1.5KE series belongs to Diodes' transient voltage suppressor portfolio, engineered specifically for high-energy surge immunity in automotive, industrial, and telecom infrastructure applications where reliability under extreme electrical stress is critical.
FAQ
What is the difference between 1.5KE15CA-T and 1.5KE15A-T?
The "C" suffix denotes bidirectional configuration, meaning 1.5KE15CA-T clamps both positive and negative transients symmetrically, while 1.5KE15A-T is unidirectional and requires correct polarity installation. The CA version has no cathode band marking and supports AC-coupled or floating signal lines without polarity dependency.
Can 1.5KE15CA-T be used in automotive applications?
Yes-1.5KE15CA-T meets AEC-Q101 qualification requirements for discrete semiconductors and is manufactured in IATF 16949 certified facilities. Its -55°C to +175°C operating range, glass-passivated die, and RoHS/halogen-free construction align with automotive electronics durability standards.
What is the thermal derating behavior above 25°C ambient?
Peak pulse power remains unchanged up to +25°C, but steady-state power dissipation drops linearly: from 5.0W at 75°C lead temperature to zero at 175°C junction temperature. Derating curves are provided in DS21503 Rev. 12, Figure 1.
How does the DO-201 package affect PCB layout and thermal performance?
The DO-201 axial package allows direct mounting between chassis ground and protected line, enabling low-inductance paths for surge current. Its 9.5mm lead length at TL=75°C defines thermal resistance; PCB copper land patterns should minimize trace length and maximize thermal pad area to sustain rated power.
1.5KE15CA-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:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 12.8V
- Voltage - Breakdown (Min):
- 14.3V
- Voltage - Clamping (Max) @ Ipp:
- 21.2V
- 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:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- DO-201
1.5KE15CA-T FAQ
1.How can I place an order for 1.5KE15CA-T through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5KE15CA-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 1.5KE15CA-T reliable?
The price and inventory of 1.5KE15CA-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5KE15CA-T is usually 5 days.
3.What payment methods are accepted for 1.5KE15CA-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5KE15CA-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5KE15CA-T?
1.5KE15CA-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5KE15CA-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 1.5KE15CA-T?
For technical support, including 1.5KE15CA-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5KE15CA-T requirements.
6.How does Aetrix verify that 1.5KE15CA-T is sourced from the original manufacturer or authorized distributors?
All 1.5KE15CA-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 1.5KE15CA-T meets industry standards.
7.What is the process for return or replacement of 1.5KE15CA-T?
All 1.5KE15CA-T units undergo pre-shipment inspection (PSI). If there is an issue with 1.5KE15CA-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 1.5KE15CA-T part is unused and in its original packaging.
Return procedure for 1.5KE15CA-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5KE15CA-T Tags
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ESD9B5.0ST5G
onsemi
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DESD3V3E1BL-7B
Diodes Incorporated
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onsemi
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D5V0H1B2LP-7B
Diodes Incorporated
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Diodes Incorporated
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Diodes Incorporated
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ESD5Z5.0T1G
onsemi
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DESD5V0U1BB-7
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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