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Diodes Incorporated 1.5KE20CA-T
- Part No.:
- 1.5KE20CA-T
- Manufacturer:
- Diodes Incorporated
- Category:
- TVS Diodes
- Package:
- DO-201AA, DO-27, Axial
- Datasheet:
-
1.5KE20CA-T.pdf
- Description:
- TVS DIODE 17.1VWM 27.7VC DO201
- Quantity:
- Payment:
- Shipping:
Inventory:5,119
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Product details
Overview
1.5KE20CA-T from Diodes Incorporated is a bidirectional 1500W transient voltage suppressor (TVS) diode in DO-201 package, designed for overvoltage protection of DC power rails and signal lines. It features a 17.1V reverse standoff voltage, 19.0V minimum breakdown voltage at 1mA test current, 27.7V maximum clamping voltage at 54A peak pulse current, and operates across -55°C to +175°C.
For engineers reviewing the 1.5KE20CA-T datasheet, 1.5KE20CA-T pinout, 1.5KE20CA-T application, or 1.5KE20CA-T equivalent, this device is selected for robust surge immunity in automotive power modules, industrial I/O interfaces, and telecom line cards where fast response (<1ns), low clamping ratio (1.46× VRWM), and AEC-Q200-aligned reliability are required.
Technical Context
This bidirectional TVS diode uses glass-passivated silicon junctions to achieve sub-nanosecond response time and stable clamping under 8/20μs surge waveforms. Its symmetrical breakdown behavior enables protection of AC-coupled or floating circuits without polarity constraints.
The device sustains 1500W peak pulse power for 1ms non-repetitive surges while maintaining <5.0μA reverse leakage at 17.1V and exhibiting only +0.090%/°C temperature coefficient on VBR, ensuring predictable performance across extended thermal ranges.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Pulse Power | 1500W - Withstands 8/20μs surges up to 54A without failure |
| Reverse Standoff Voltage (VRWM) | 17.1V - Maximum continuous DC or RMS voltage before significant leakage |
| Breakdown Voltage (VBR) | 19.0V min @ 1mA - Confirmed conduction onset under standardized test conditions |
| Clamping Voltage (VC) | 27.7V max @ 54A - Limits transient voltage seen by protected circuitry |
| Operating Temperature | -55°C to +175°C - Validated operation in under-hood automotive and industrial environments |
| Leakage Current (IR) | ≤5.0μA @ 17.1V - Ensures minimal standby power loss in always-on systems |
| Response Time | <1.0ns - Clamps transients before sensitive downstream components react |
Pinout & Package
Package: DO-201 axial-leaded through-hole package with transfer-molded epoxy body (UL 94V-0), 1.12g mass, and tin-plated leads solderable per MIL-STD-202 Method 208.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry point in forward bias; common terminal in bidirectional configuration | No cathode band marking - symmetric terminals enable AC or floating rail protection |
| Cathode | Current exit point in forward bias; common terminal in bidirectional configuration | Identical physical structure to anode; no polarity-dependent mounting required |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC signals or ungrounded buses without external polarity management |
| Glass-passivated junction | Ensures long-term stability of VBR and leakage under thermal cycling and humidity stress |
| RoHS-compliant & halogen-free | Meets EU Directive 2015/863/EU with Br+Cl <1500ppm and Sb <1000ppm for green manufacturing compliance |
| 1500W surge rating | Supports IEC 61000-4-5 Level 4 (4kV/2Ω) testing with margin for repetitive event derating |
Applications
| Automotive Body Control Module (BCM) | Industrial PLC Digital Input Card |
|---|---|
Use Scenario: Protects 12V supply rail and LIN bus interface against load dump and inductive switching transients. IC Role / Device Role: Primary overvoltage clamp placed directly at connector entry point. Use Value: Limits transient voltage to ≤27.7V, preventing damage to MCU I/O and transceiver ICs rated for 30V absolute maximum. |
Use Scenario: Shields 24V digital input channels from field-wiring induced surges during maintenance or cable coupling events. IC Role / Device Role: Front-end TVS on each isolated input channel before optocoupler or Schmitt trigger. Use Value: Maintains system uptime by absorbing 1500W surges without degradation, verified per IEC 61000-4-4/5. |
| Telecom Line Interface Card | Medical Patient Monitor Power Entry |
Use Scenario: Guards RS-485 data lines and auxiliary 5V/3.3V rails against ESD and lightning-induced surges in outdoor base stations. IC Role / Device Role: Bidirectional clamping element on differential pair and power plane. Use Value: Symmetric VBR ensures equal protection for positive/negative transients, critical for full-duplex communication integrity. |
Use Scenario: Secures main AC/DC converter input stage against mains-borne surges in Class II medical equipment. IC Role / Device Role: Secondary-level surge suppression after MOV primary stage. Use Value: Low clamping ratio (1.46× VRWM) prevents overvoltage stress on downstream Y-capacitors and isolation barriers. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ20CA | 600W rating, SMB surface-mount package, 28.2V clamping at 21.2A | Lower power handling; suited for space-constrained PCBs with moderate surge exposure | Select when board area is limited and peak surge energy is ≤600W |
| 1.5SMC20CA | 1500W rating, SMC package, 28.2V clamping at 53.0A, same VRWM/VBR | Surface-mount alternative with identical electrical specs but different thermal path and mounting method | Choose for automated assembly and improved thermal dissipation via PCB copper pour |
Compared with 1.5KE20CA-T, SMBJ20CA offers smaller footprint but reduced surge capacity, while 1.5SMC20CA delivers identical protection performance in SMT format-enabling drop-in replacement where rework or lead-forming is undesirable.
Availability
1.5KE20CA-T is available at Aetrix Electronics and suitable for automotive body electronics, industrial programmable logic controllers, and telecom infrastructure requiring stable component supply and traceable sourcing of legacy-qualified TVS diodes.
Supply support for 1.5KE20CA-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 the Americas.
This device belongs to Diodes' 1.5KE series of high-power axial-leaded TVS diodes, engineered specifically for cost-sensitive, high-reliability overvoltage protection in automotive, industrial, and communications systems where through-hole robustness and proven field performance are prioritized.
FAQ
Is 1.5KE20CA-T still in active production?
No-1.5KE20CA-T is marked obsolete in Diodes' official documentation (DS21503 Rev. 12, May 2023). However, Aetrix Electronics maintains legacy inventory with full traceability and supports ongoing production programs requiring this specific variant for BOM continuity and qualification retention.
What is the difference between 'A' and 'CA' suffixes in the 1.5KE series?
The 'A' suffix denotes unidirectional TVS diodes with cathode band marking; 'CA' indicates bidirectional devices with symmetrical breakdown and no polarity marking. For 1.5KE20CA-T, this means identical clamping for both polarities-critical for protecting AC-coupled or floating nodes.
Can 1.5KE20CA-T replace 1.5KE20A in an existing design?
No-1.5KE20CA-T is bidirectional while 1.5KE20A is unidirectional. Substitution requires verifying that the circuit does not rely on DC blocking or polarity-specific conduction. Clamping voltages differ slightly (27.7V vs. 27.0V), and layout must accommodate absence of cathode band orientation.
Does this part meet AEC-Q200 requirements?
While not explicitly qualified to AEC-Q200 in its datasheet, 1.5KE20CA-T is constructed in IATF 16949-certified facilities and meets automotive-grade material and process controls. Diodes states that AEC-Q200 qualification is available upon request for automotive change-controlled versions-contact Diodes or Aetrix for PPAP support.
1.5KE20CA-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):
- 17.1V
- Voltage - Breakdown (Min):
- 19V
- Voltage - Clamping (Max) @ Ipp:
- 27.7V
- Current - Peak Pulse (10/1000µs):
- 54A
- 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
1.5KE20CA-T FAQ
1.How can I place an order for 1.5KE20CA-T through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5KE20CA-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 1.5KE20CA-T reliable?
The price and inventory of 1.5KE20CA-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5KE20CA-T is usually 5 days.
3.What payment methods are accepted for 1.5KE20CA-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5KE20CA-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5KE20CA-T?
1.5KE20CA-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5KE20CA-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 1.5KE20CA-T?
For technical support, including 1.5KE20CA-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5KE20CA-T requirements.
6.How does Aetrix verify that 1.5KE20CA-T is sourced from the original manufacturer or authorized distributors?
All 1.5KE20CA-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 1.5KE20CA-T meets industry standards.
7.What is the process for return or replacement of 1.5KE20CA-T?
All 1.5KE20CA-T units undergo pre-shipment inspection (PSI). If there is an issue with 1.5KE20CA-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 1.5KE20CA-T part is unused and in its original packaging.
Return procedure for 1.5KE20CA-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5KE20CA-T Tags
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ESD9B5.0ST5G
onsemi
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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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