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Diodes Incorporated 1.5KE150A-T
- Part No.:
- 1.5KE150A-T
- Manufacturer:
- Diodes Incorporated
- Category:
- TVS Diodes
- Package:
- DO-201AA, DO-27, Axial
- Datasheet:
-
1.5KE150A-T.pdf
- Description:
- TVS DIODE 128VWM 207VC DO201
- Quantity:
- Payment:
- Shipping:
Inventory:9,682
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Product details
Overview
1.5KE150A-T from Diodes Incorporated is a unidirectional 1500W transient voltage suppressor (TVS) diode in DO-201 package, designed for primary-level surge protection in DC power rails and signal lines. It features a 128V reverse standoff voltage (VRWM), 143V minimum breakdown voltage (VBR), 207V maximum clamping voltage (VC) at 7.2A peak pulse current (IPP), and operates across –55°C to +175°C.
For engineers reviewing the 1.5KE150A-T datasheet, 1.5KE150A-T pinout, 1.5KE150A-T application, or 1.5KE150A-T equivalent, this device is selected for high-energy surge suppression where fast response (<1 ns), low clamping ratio (VC/VBR ≈ 1.45), and axial-leaded robustness in automotive and industrial power supplies are critical.
Technical Context
This unidirectional TVS diode uses a glass-passivated silicon junction to achieve stable avalanche breakdown under transient overvoltage events. Its 1.0mA test current (IT) and 5.0μA max reverse leakage (IR) at VRWM ensure minimal standby power loss in protected circuits.
The device delivers 1500W peak pulse power (tP = 1.0ms, 10/1000μs waveform) with a voltage temperature coefficient of +0.108%/°C - enabling predictable clamping behavior across wide ambient ranges without external thermal compensation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Pulse Power | 1500W (1.0ms pulse, non-repetitive; defines maximum surge energy absorption capability) |
| Reverse Standoff Voltage | 128V (maximum continuous DC or RMS voltage before significant leakage; sets operating rail margin) |
| Breakdown Voltage | 143V min @ 1.0mA (avalanche initiation threshold; ensures reliable turn-on before system damage) |
| Clamping Voltage | 207V max @ 7.2A IPP (voltage seen by protected circuit during surge; determines downstream component stress) |
| Peak Pulse Current | 7.2A (maximum transient current it can shunt while maintaining VC ≤ 207V) |
| Operating Temperature | –55°C to +175°C (supports under-hood automotive and industrial environments without derating) |
| Leakage Current | ≤5.0μA @ 128V (low standby power draw; avoids battery drain in always-on systems) |
Pinout & Package
Package: DO-201 axial-leaded glass-passivated epoxy package (UL 94V-0 rated), 1.12g weight, tin-finished leads solderable per MIL-STD-202 Method 208.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current sink during reverse-biased surge | Connected to ground or low-impedance return path; completes clamping loop when cathode is on protected line |
| Cathode | Surge input terminal | Connected to protected line (e.g., 12V rail); polarity marking band identifies this terminal |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated die construction | Enhances long-term reliability and moisture resistance vs. plastic-passivated alternatives |
| Fast response time (<1 ns) | Clamps transients before sensitive downstream ICs experience overvoltage stress |
| RoHS-compliant, halogen-free "Green" finish | Meets automotive and industrial environmental compliance requirements (Br+Cl <1500ppm, Sb <1000ppm) |
| 1500W peak pulse rating | Supports IEC 61000-4-5 Level 4 (4kV/2Ω) surge testing in single-stage protection designs |
Applications
| Automotive Power Supply Protection | Industrial DC Motor Drive Inputs |
|---|---|
Use Scenario: Protecting 12V/24V battery-fed ECUs against load dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Primary clamping element placed between battery rail and DC-DC converter input. Use Value: Clamps 120V load dump spikes to ≤207V within nanoseconds, preventing MOSFET gate oxide failure and regulator latch-up. |
Use Scenario: Safeguarding H-bridge driver inputs from inductive kickback during motor commutation. IC Role / Device Role / Timing Role: Unidirectional TVS connected anode-to-ground, cathode-to-driver supply rail. Use Value: Absorbs 1500W energy from 100ns–1ms flyback transients, eliminating need for snubber RC networks. |
| Telecom Line Interface Protection | Renewable Energy Charge Controller Inputs |
Use Scenario: Shielding PoE-powered equipment front-end from lightning-induced surges on Ethernet pairs. IC Role / Device Role / Timing Role: Paired with common-mode chokes and gas discharge tubes in multi-stage protection architecture. Use Value: Provides precise 128V standoff to avoid false triggering on 48V DC bias while clamping >1kV transients. |
Use Scenario: Securing solar panel input terminals of MPPT controllers against lightning-induced surges. IC Role / Device Role / Timing Role: Mounted directly at PV connector entry point, upstream of input capacitors and MOSFETs. Use Value: Withstands repeated 7.2A surges without parameter drift, validated for outdoor deployment up to +85°C ambient. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ150A | DO-214AA package; 600W rating; 150V VRWM; 243V VC @ 6.2A | Lower power handling; surface-mount only; better for space-constrained PCBs | Select when board area is limited and surge energy ≤600W suffices |
| 1N6289 | Same DO-201 package; 1500W rating; 128V VRWM; 207V VC @ 7.2A; legacy industry standard | Identical electrical specs but lacks RoHS-3/halogen-free certification | Choose only for legacy redesigns requiring exact form-fit-function replacement without compliance updates |
Compared with SMBJ150A and 1N6289, the 1.5KE150A-T offers identical surge capability in DO-201 but adds RoHS-3 and halogen-free compliance - critical for new automotive and EU-market designs - while maintaining full interchangeability in through-hole layouts.
Availability
1.5KE150A-T is available at Aetrix Electronics and suitable for automotive ECU protection, industrial motor drive inputs, telecom line interfaces, and renewable energy charge controller designs requiring stable component supply and traceable sourcing.
Supply support for 1.5KE150A-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-reliability, high-energy surge protection in automotive, industrial, and telecom infrastructure applications.
FAQ
What is the difference between 1.5KE150A-T and 1.5KE150CA-T?
The 1.5KE150A-T is unidirectional, with cathode marked by a band and intended for DC line protection where polarity is fixed. The 1.5KE150CA-T is bidirectional, lacking polarity marking and used in AC-coupled or differential signal paths. Their clamping voltages differ slightly: 207V (A) vs. 207V (CA) at same IPP, but CA has symmetric breakdown in both directions.
Can 1.5KE150A-T be used in place of 1.5KE130A-T in a 12V system?
No - the 1.5KE150A-T has 128V standoff, making it unsuitable for 12V systems where it would conduct continuously. The 1.5KE130A-T (111V VRWM) is also mismatched; correct selection requires VRWM ≥13.2V (110% of 12V) and ≤15V. Use 1.5KE15A-T (12.8V VRWM) instead.
Is 1.5KE150A-T qualified to AEC-Q101?
No - the datasheet states AEC-Q101 qualification requires specific change control and PPAP capability, which must be requested separately. Standard 1.5KE150A-T is not pre-qualified; Diodes offers AEC-Q101 versions under distinct part numbers (e.g., with "AQ" suffix) and IATF 16949-manufactured lots.
What is the meaning of the "-T" suffix in 1.5KE150A-T?
The "-T" denotes tape-and-reel packaging: 1,000 units per 13-inch reel. This format enables automated pick-and-place assembly. The "-B" suffix indicates bulk packaging (1,000 units in bag). Electrical and thermal specifications are identical between -T and -B variants.
1.5KE150A-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):
- 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
1.5KE150A-T FAQ
1.How can I place an order for 1.5KE150A-T through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5KE150A-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 1.5KE150A-T reliable?
The price and inventory of 1.5KE150A-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5KE150A-T is usually 5 days.
3.What payment methods are accepted for 1.5KE150A-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5KE150A-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5KE150A-T?
1.5KE150A-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5KE150A-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 1.5KE150A-T?
For technical support, including 1.5KE150A-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5KE150A-T requirements.
6.How does Aetrix verify that 1.5KE150A-T is sourced from the original manufacturer or authorized distributors?
All 1.5KE150A-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 1.5KE150A-T meets industry standards.
7.What is the process for return or replacement of 1.5KE150A-T?
All 1.5KE150A-T units undergo pre-shipment inspection (PSI). If there is an issue with 1.5KE150A-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 1.5KE150A-T part is unused and in its original packaging.
Return procedure for 1.5KE150A-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5KE150A-T Tags
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Diodes Incorporated
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Diodes Incorporated
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