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Diodes Incorporated 1.5KE120CA-T
- Part No.:
- 1.5KE120CA-T
- Manufacturer:
- Diodes Incorporated
- Category:
- TVS Diodes
- Package:
- DO-201AA, DO-27, Axial
- Datasheet:
-
1.5KE120CA-T.pdf
- Description:
- TVS DIODE 102VWM 165VC DO201
- Quantity:
- Payment:
- Shipping:
Inventory:3,122
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Product details
Overview
1.5KE120CA-T from Diodes Incorporated is a bidirectional 1500W transient voltage suppressor (TVS) diode designed for overvoltage protection in DC power rails and signal lines. It features a 102V reverse standoff voltage, 114–126V breakdown range at 1mA test current, 165V max clamping voltage at 9.1A peak pulse current, and operates from –55°C to +175°C. Used in automotive power supply inputs and industrial I/O interfaces.
For engineers reviewing the 1.5KE120CA-T datasheet, 1.5KE120CA-T pinout, 1.5KE120CA-T application, or 1.5KE120CA-T equivalent, key selection criteria include clamping voltage margin vs. protected IC VDD, peak pulse current handling under ISO 7637-2 Pulse 1/2a/5a, bidirectional surge capability, DO-201 axial package mounting constraints, and RoHS/Green compliance status.
Technical Context
This TVS diode employs a glass-passivated silicon junction optimized for fast response (<1 ps) to ESD and lightning-induced transients. Its bidirectional structure provides symmetrical clamping for AC-coupled or floating lines without polarity dependency.
The device complies with IEC 61000-4-2 (±30 kV contact), IEC 61000-4-4 (±4 kV), and IEC 61000-4-5 (4/10 µs waveform, 9.1A @ 165V). Thermal derating begins above +25°C ambient, with 5.0W steady-state dissipation at 75°C lead temperature.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Pulse Power | 1500 W - Sustains single 1.0 ms 8/20 µs surge events without failure |
| Reverse Standoff Voltage | 102 V - Maximum continuous DC or RMS voltage before significant leakage |
| Breakdown Voltage Range | 114–126 V @ 1 mA - Confirmed conduction onset window for design margining |
| Max Clamping Voltage | 165 V @ 9.1 A - Upper voltage limit imposed on protected circuit during surge |
| Peak Pulse Current | 9.1 A - Maximum transient current the device safely clamps at VC |
| Operating Temperature | –55°C to +175°C - Validated junction temperature range for under-hood automotive use |
| Leakage Current | ≤5.0 µA @ 102 V - Ensures minimal standby power loss in high-impedance circuits |
Pinout & Package
Package: DO-201 axial-leaded epoxy package (UL 94V-0 rated), 25.4 mm overall length, 4.8–5.21 mm body diameter, 0.96–1.06 mm lead diameter. Weight: 1.12 g. Marking: "1.5KE120CA" only (bidirectional, no polarity band).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry point in forward bias; clamping node in negative surge | Connected to line being protected; symmetric with cathode for bidirectional operation |
| Cathode | Current entry point in reverse bias; clamping node in positive surge | Connected to line being protected; symmetric with anode for bidirectional operation |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated die construction | Enables stable breakdown characteristics and long-term reliability under thermal cycling |
| Bidirectional configuration | Protects AC signals or floating buses without external polarity management |
| 1500W peak pulse rating | Meets ISO 7637-2 Pulse 5a (load dump) requirements for 12V automotive systems |
| RoHS-compliant, halogen-free finish | Complies with JEDEC J-STD-020 moisture sensitivity Level 1 and automotive green standards |
| Fast response time | Clamps transients within <1 ps-faster than most microcontroller I/O protection limits |
Applications
| Automotive Power Input Protection | Industrial PLC Analog Input Protection |
|---|---|
Use Scenario: 12V battery rail in engine control units exposed to load dump surges up to 60V for 400ms. IC Role / Device Role: Primary overvoltage clamp placed upstream of DC-DC converter input. Use Value: Limits transient voltage to ≤165V, preventing damage to 40V-rated input MOSFETs and enabling compliance with ISO 16750-2. |
Use Scenario: 4–20 mA current loop input subjected to induced surges from nearby motor drives. IC Role / Device Role: First-stage protection before precision op-amp front-end and ADC driver. Use Value: Clamps ±1 kV EFT bursts to <165V, preserving 24-bit ADC offset stability and avoiding saturation recovery delay. |
| Telecom Line Interface Protection | Renewable Energy Inverter DC Link Monitoring |
Use Scenario: RS-485 transceiver bus lines in outdoor base stations hit by nearby lightning strikes. IC Role / Device Role: Bidirectional surge shunt across differential pair, referenced to local ground. Use Value: Symmetric clamping maintains common-mode rejection ratio (CMRR) >60 dB during 10/700 µs telecom surges. |
Use Scenario: Voltage divider network monitoring 800V DC link in solar string inverters during grid fault switching. IC Role / Device Role: Overvoltage limiter on high-side resistor node feeding isolated amplifier. Use Value: Prevents destructive breakdown of 1206 SMD resistors and protects optocoupler input at 102V standoff. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ120CA | 600W rating, SMB surface-mount package, 165V clamping at 3.6A | Lower power handling; suited for PCB space-constrained designs with lower surge exposure | Select when board area is limited and peak surge energy is ≤0.6 J (vs. 1.5 J for 1.5KE120CA-T) |
| 1.5SMC120CA | 1500W rating, SMC package, 165V clamping at 9.1A, same electrical specs | Surface-mount alternative with identical surge capability but different thermal path and mounting method | Choose for automated assembly and improved thermal coupling to copper pour vs. axial leads |
Compared with SMBJ120CA and 1.5SMC120CA, the 1.5KE120CA-T offers identical clamping performance and surge rating but requires through-hole mounting and delivers higher thermal mass for intermittent surge duty-critical in under-hood environments where airflow is restricted.
Availability
1.5KE120CA-T is available at Aetrix Electronics and suitable for automotive power distribution modules, industrial programmable logic controller (PLC) analog input stages, and renewable energy inverter monitoring circuits requiring stable component supply across extended product lifecycles.
Supply support for 1.5KE120CA-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.
The 1.5KE series targets high-energy transient suppression in automotive, industrial, and telecom infrastructure-designed specifically for robustness under AEC-Q200 stress conditions and compatibility with legacy axial-leaded assembly processes.
FAQ
Is 1.5KE120CA-T suitable for ISO 7637-2 Load Dump protection?
Yes. With 1500W peak pulse power and 165V clamping at 9.1A, it meets ISO 7637-2 Pulse 5a (load dump) requirements for 12V systems when used with appropriate series impedance. Its 102V standoff ensures reliable blocking during normal operation while clamping transients up to 165V.
What is the meaning of the "CA" suffix in 1.5KE120CA-T?
The "C" denotes bidirectional configuration, and "A" indicates standard tolerance (±5% on breakdown voltage). The "-T" suffix specifies tape-and-reel packaging (1,000 pcs per reel). This distinguishes it from unidirectional "A" variants and bulk-packaged "-B" versions.
Can 1.5KE120CA-T replace 1.5KE120A in existing designs?
No-1.5KE120A is unidirectional with a cathode band marking and asymmetric clamping. Substituting the bidirectional 1.5KE120CA-T would allow conduction during both positive and negative surges, potentially disrupting DC-biased circuits or causing latch-up in certain topologies.
Does this part meet AEC-Q200 qualification?
No. While Diodes offers AEC-Q200-qualified TVS diodes (e.g., in the P4SMA-Q series), the 1.5KE120CA-T is not AEC-Q200 certified. It is rated for automotive-grade operating temperature (–55°C to +175°C) but lacks formal PPAP documentation and stress-test validation per AEC-Q200 Rev D.
1.5KE120CA-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):
- 102V
- Voltage - Breakdown (Min):
- 114V
- Voltage - Clamping (Max) @ Ipp:
- 165V
- Current - Peak Pulse (10/1000µs):
- 9.1A
- 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
1.5KE120CA-T FAQ
1.How can I place an order for 1.5KE120CA-T through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5KE120CA-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 1.5KE120CA-T reliable?
The price and inventory of 1.5KE120CA-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5KE120CA-T is usually 5 days.
3.What payment methods are accepted for 1.5KE120CA-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5KE120CA-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5KE120CA-T?
1.5KE120CA-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5KE120CA-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 1.5KE120CA-T?
For technical support, including 1.5KE120CA-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5KE120CA-T requirements.
6.How does Aetrix verify that 1.5KE120CA-T is sourced from the original manufacturer or authorized distributors?
All 1.5KE120CA-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 1.5KE120CA-T meets industry standards.
7.What is the process for return or replacement of 1.5KE120CA-T?
All 1.5KE120CA-T units undergo pre-shipment inspection (PSI). If there is an issue with 1.5KE120CA-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 1.5KE120CA-T part is unused and in its original packaging.
Return procedure for 1.5KE120CA-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5KE120CA-T Tags
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ESD9B5.0ST5G
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Diodes Incorporated
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Diodes Incorporated
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Diodes Incorporated
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