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Diodes Incorporated 1.5KE150CA-T
- Part No.:
- 1.5KE150CA-T
- Manufacturer:
- Diodes Incorporated
- Category:
- TVS Diodes
- Package:
- DO-201AA, DO-27, Axial
- Datasheet:
-
1.5KE150CA-T.pdf
- Description:
- TVS DIODE 128VWM 207VC DO201
- Quantity:
- Payment:
- Shipping:
Inventory:3,382
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Product details
Overview
1.5KE150CA-T from Diodes Incorporated is a bidirectional 1500W transient voltage suppressor (TVS) diode in DO-201 package, with 128V reverse standoff voltage (VRWM), 143V breakdown voltage (VBR min), and 207V maximum clamping voltage (VC) at 7.2A peak pulse current. It provides robust ESD and surge protection for DC power rails and signal lines in industrial power supplies and telecom interfaces.
For engineers reviewing the 1.5KE150CA-T datasheet, 1.5KE150CA-T pinout, 1.5KE150CA-T application, or 1.5KE150CA-T equivalent, key selection criteria include clamping voltage margin vs. protected IC VCC rating, unidirectional/bidirectional polarity match, DO-201 thermal derating behavior, and IEC 61000-4-5 surge current handling capability.
Technical Context
This bidirectional TVS operates symmetrically across both polarities, enabling AC line and differential signal protection without polarity constraints. Its glass-passivated junction ensures stable breakdown characteristics and low leakage (<5 µA at VRWM) over temperature.
The device delivers 1500W peak pulse power (tP = 1.0 ms, 10/1000 µs waveform), with fast response time (<1.0 ps) and voltage temperature coefficient of +0.108%/°C - critical for maintaining clamping integrity in wide-temperature industrial environments (-55°C to +175°C).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Pulse Power | 1500 W - sustains single 1.0 ms transient surges per IEC 61000-4-5 Level 4 (4 kV) |
| Reverse Standoff Voltage (VRWM) | 128 V - maximum continuous DC or RMS voltage before significant leakage begins |
| Breakdown Voltage (VBR min) | 143 V @ IT = 1.0 mA - guaranteed conduction onset under standardized test current |
| Clamping Voltage (VC) | 207 V @ IPP = 7.2 A - maximum voltage seen by protected circuit during full-rated surge |
| Operating Temperature | -55°C to +175°C - supports under-hood automotive and high-temp industrial deployments |
| Leakage Current (IR) | ≤5.0 µA @ VRWM - minimizes standby power loss in always-on systems |
| Package | DO-201 - axial-leaded, through-hole mountable with 1.12 g mass and UL 94V-0 epoxy |
Pinout & Package
DO-201 package: axial-leaded, glass-passivated silicon junction, tin-plated leads solderable per MIL-STD-202 Method 208. Bidirectional marking shows type number only (no cathode band).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry point (positive polarity) | Connects to line or signal node requiring clamping during positive transients |
| Cathode | Current exit point (negative polarity) | Connects to reference (GND or return) - symmetrical role in bidirectional operation |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables protection of AC-coupled or floating differential lines without polarity biasing |
| Glass-passivated die | Ensures stable VBR and low IR drift over 1000+ thermal cycles and humidity exposure |
| RoHS-compliant & halogen-free | Meets EU Directive 2015/863/EU with Br+Cl <1500 ppm and Sb <1000 ppm |
| 1500W surge rating | Supports IEC 61000-4-5 4 kV surge testing with margin for system-level compliance |
Applications
| Industrial Power Supply Input | Telecom Line Interface |
|---|---|
Use Scenario: Protection of AC/DC converter front-end against lightning-induced surges on 110–240 VAC mains input. IC Role / Device Role: Primary surge shunt element placed across bridge rectifier output or bulk capacitor. Use Value: Clamps transients to ≤207 V, preventing overvoltage damage to downstream PWM controllers and MOSFETs rated for 250 V. |
Use Scenario: Surge suppression on T1/E1 interface transformer secondary windings in base station line cards. IC Role / Device Role: Bidirectional clamp protecting differential line drivers/receivers (e.g., DS32EL0401) from induced common-mode surges. Use Value: Symmetric clamping preserves signal integrity while meeting GR-1089-CORE Level 3 (6 kV ring wave) requirements. |
| Automotive Body Control Module | Industrial PLC Analog Input |
Use Scenario: Protection of LIN bus transceiver power pins against load-dump and jump-start transients in 12 V systems. IC Role / Device Role: Secondary-level TVS placed between fuse and transceiver VCC rail. Use Value: Withstands 12 V system transients up to 35 V for 400 ms and clamps 1500 W spikes to safe levels for 3.3 V/5 V logic. |
Use Scenario: Overvoltage safeguard on 4–20 mA current loop inputs exposed to field wiring faults or ESD events. IC Role / Device Role: Bidirectional clamp across input terminals of precision ADC front-end (e.g., ADS1256). Use Value: Limits fault voltage to 207 V, preventing latch-up or gate oxide rupture in instrumentation amplifiers and multiplexers. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ150CA | 600W rating, SMB package (surface-mount), lower IPC (4.8 A), same VRWM/VBR/VC | Preferred for space-constrained PCBs; unsuitable for high-energy 1500W surges | Select when board area is limited and surge energy does not exceed 600W |
| 1.5SMC150CA | Same 1500W rating, SMC package (surface-mount), identical electrical specs, higher thermal resistance | Used where automated assembly required but DO-201 lead-forming is incompatible with production flow | Choose for reflow-compatible designs needing equivalent surge performance |
Compared with 1.5KE150CA-T, SMBJ150CA offers footprint reduction at 60% peak power trade-off, while 1.5SMC150CA maintains full 1500W capability in surface-mount format - enabling layout flexibility without sacrificing clamping performance or temperature range.
Availability
1.5KE150CA-T is available at Aetrix Electronics and suitable for industrial power supply input protection, telecom line interface hardening, and automotive body control module surge mitigation requiring stable component supply and long-term lifecycle support.
Supply support for 1.5KE150CA-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 semiconductor company specializing in discrete, analog, and mixed-signal devices, with manufacturing certified to IATF 16949 and quality systems aligned to AEC-Q200 for passive components.
This part belongs to the 1.5KE series of high-power axial TVS diodes, engineered for cost-effective, high-reliability transient suppression in legacy and new-design industrial, telecom, and automotive power systems.
FAQ
What is the difference between 1.5KE150CA-T and 1.5KE150A-T?
The "C" suffix denotes bidirectional construction, meaning 1.5KE150CA-T clamps symmetrically for both positive and negative transients, while 1.5KE150A-T is unidirectional and requires correct polarity orientation. The clamping voltage (207 V) and standoff voltage (128 V) are identical, but the CA version eliminates polarity-dependent layout constraints in AC or floating circuits.
Can 1.5KE150CA-T be used in place of a MOV for surge protection?
No - MOVs exhibit higher capacitance (>100 pF), slower response (>25 ns), and degradation after repeated surges, whereas 1.5KE150CA-T has sub-nanosecond response, negligible capacitance (~5 pF), and no wear-out mechanism. It is suited for precision clamping near sensitive ICs; MOVs remain appropriate for primary-stage, high-energy diversion.
Is 1.5KE150CA-T compliant with AEC-Q200?
No - although manufactured in IATF 16949 facilities and qualified to AEC-Q200 for related passive families, the 1.5KE series is not formally AEC-Q200 qualified. For automotive applications requiring AEC-Q200 certification, Diodes recommends the P6SMB150CA or SMAJ150CA series, which carry full qualification documentation.
How does thermal derating affect 1.5KE150CA-T's 1500W rating?
The 1500W rating applies only at TA = +25°C with specified lead length (9.5 mm). Above +25°C, peak power must be linearly derated: at +75°C ambient, maximum allowable pulse power drops to ~900W. Derating curves are provided in DS21503 Rev. 12, Figure 1, and must be applied for reliable operation in enclosed or high-temperature enclosures.
1.5KE150CA-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):
- 128V
- Voltage - Breakdown (Min):
- 143V
- Voltage - Clamping (Max) @ Ipp:
- 207V
- Current - Peak Pulse (10/1000µs):
- 7.2A
- 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
1.5KE150CA-T FAQ
1.How can I place an order for 1.5KE150CA-T through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5KE150CA-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 1.5KE150CA-T reliable?
The price and inventory of 1.5KE150CA-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5KE150CA-T is usually 5 days.
3.What payment methods are accepted for 1.5KE150CA-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5KE150CA-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5KE150CA-T?
1.5KE150CA-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5KE150CA-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 1.5KE150CA-T?
For technical support, including 1.5KE150CA-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5KE150CA-T requirements.
6.How does Aetrix verify that 1.5KE150CA-T is sourced from the original manufacturer or authorized distributors?
All 1.5KE150CA-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 1.5KE150CA-T meets industry standards.
7.What is the process for return or replacement of 1.5KE150CA-T?
All 1.5KE150CA-T units undergo pre-shipment inspection (PSI). If there is an issue with 1.5KE150CA-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 1.5KE150CA-T part is unused and in its original packaging.
Return procedure for 1.5KE150CA-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5KE150CA-T Tags
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