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Diodes Incorporated 1.5KE200A-T
- Part No.:
- 1.5KE200A-T
- Manufacturer:
- Diodes Incorporated
- Category:
- TVS Diodes
- Package:
- DO-201AA, DO-27, Axial
- Datasheet:
-
1.5KE200A-T.pdf
- Description:
- TVS DIODE 171VWM 274VC DO201
- Quantity:
- Payment:
- Shipping:
Inventory:6,706
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Product details
Overview
1.5KE200A-T from Diodes Incorporated is a unidirectional 1500W transient voltage suppressor (TVS) diode in DO-201 package, designed for primary overvoltage protection of DC power rails and signal lines. It features a 171V reverse standoff voltage (VRWM), 190–210V breakdown range (VBR), 274V maximum clamping voltage (VC) at 5.5A peak pulse current, and operates across –55°C to +175°C.
For engineers reviewing the 1.5KE200A-T datasheet, 1.5KE200A-T pinout, 1.5KE200A-T application, or 1.5KE200A-T equivalent, this device is selected for high-energy surge suppression in automotive power modules, industrial motor drives, and telecom power supplies where fast response (<1 ns), low leakage (<5 µA @ 171V), and glass-passivated reliability are critical.
Technical Context
This unidirectional TVS diode uses an avalanche breakdown mechanism to clamp transient overvoltages above its standoff threshold. Its glass-passivated junction ensures stable VBR tolerance (±5%) and long-term reliability under repeated surge stress.
The device responds within <1 ns to ESD and lightning-induced surges, delivering 1500W peak pulse power (1 ms, 10/1000 µs waveform) while maintaining low clamping ratio (VC/VBR ≈ 1.45) and temperature coefficient of +0.108%/°C - enabling predictable performance across wide ambient ranges.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Pulse Power | 1500 W - sustains single 1 ms transients up to 5.5 A without failure |
| Reverse Standoff Voltage (VRWM) | 171 V - maximum continuous DC voltage before significant leakage begins |
| Breakdown Voltage (VBR) | 190–210 V @ 1 mA - precise avalanche onset range for repeatable clamping |
| Max Clamping Voltage (VC) | 274 V @ 5.5 A - limits protected circuit voltage during worst-case surge |
| Leakage Current (IR) | <5 µA @ 171 V - negligible standby power loss and minimal loading on source |
| Operating Temperature | –55°C to +175°C - supports under-hood automotive and high-temp industrial use |
| Response Time | <1 ns - clamps ESD and fast-rising transients before downstream ICs are damaged |
Pinout & Package
Package: DO-201 axial-leaded epoxy package (25.4 mm length, 4.8–5.21 mm diameter), UL 94V-0 rated, with tin-plated leads solderable per MIL-STD-202 Method 208. Marked with type number and cathode band.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry point during forward conduction | Connected to ground or lower-potential rail in unidirectional clamping configuration |
| Cathode | Avalanche breakdown terminal | Connected to protected line; conducts when voltage exceeds VRWM, shunting surge to ground |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated die | Ensures stable VBR over lifetime and resistance to humidity/moisture-induced drift |
| 1500W peak pulse rating | Handles IEC 61000-4-5 Level 4 (4 kV, 2 Ω source) surges without degradation |
| RoHS-compliant, halogen-free | Meets automotive green standards (<900 ppm Br/Cl, <1000 ppm Sb) and PPAP readiness |
| Low clamping ratio (VC/VBR ≈ 1.45) | Minimizes overvoltage stress on downstream MOSFETs, controllers, and sensors |
| –55°C to +175°C operation | Validated for engine control units, battery management systems, and industrial inverters |
Applications
| Automotive Power Distribution | Industrial Motor Drive DC Bus |
|---|---|
Use Scenario: Protecting 24V/48V vehicle power networks from load dump and alternator transients. IC Role / Device Role / Timing Role: Primary clamping element placed between battery rail and ECU input stage. Use Value: Limits voltage to ≤274V during 120V/350ms load dump events, preventing gate oxide rupture in power FETs. |
Use Scenario: Safeguarding IGBT gate drivers and bus voltage monitors in variable-frequency drives. IC Role / Device Role / Timing Role: Parallel-connected TVS on DC link to absorb regenerative energy spikes. Use Value: Clamps 200–300V switching overshoots within 1 ns, avoiding false triggering of overvoltage shutdown circuits. |
| Telecom Power Supply Input | Renewable Energy Inverter Control Board |
Use Scenario: Front-end surge protection for AC/DC converters in base station power systems. IC Role / Device Role / Timing Role: First-line defense against lightning-induced surges on 48V backup supply lines. Use Value: Withstands 1500W pulses per IEC 61643-32, reducing need for multi-stage protection networks. |
Use Scenario: Overvoltage suppression on PV string monitoring inputs exposed to field transients. IC Role / Device Role / Timing Role: Unidirectional clamp on isolated analog sensing path to microcontroller ADC. Use Value: Maintains <5 µA leakage at 171V, preserving measurement accuracy while surviving 10 kV EFT bursts. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ200A | Lower peak power (600W), smaller SMB package (surface-mount), 274V VC same | Preferred for space-constrained PCBs; not suitable for >600W surge events | Select when board area is limited and surge threat level is ≤IEC 61000-4-5 Level 3 |
| 1.5SMC200A | Same 1500W rating and DO-201 package, but higher IR (10 µA @ VRWM) and wider VBR tolerance (±10%) | Acceptable for non-critical industrial controls where tighter VBR stability is not required | Choose only if cost sensitivity outweighs need for ±5% VBR and <5 µA leakage |
Compared with SMBJ200A and 1.5SMC200A, the 1.5KE200A-T delivers superior VBR precision, lower leakage, and identical clamping performance in a through-hole package optimized for high-reliability power rail protection - making it preferred for automotive and mission-critical industrial designs.
Availability
1.5KE200A-T is available at Aetrix Electronics and suitable for automotive power distribution, industrial motor drive DC bus protection, and telecom power supply input requiring stable component supply and long-lifecycle support.
Supply support for 1.5KE200A-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 is part of Diodes' high-power TVS portfolio engineered specifically for robust, single-component overvoltage protection in harsh-environment applications including automotive, industrial automation, and infrastructure power systems.
FAQ
What is the difference between 1.5KE200A-T and 1.5KE200CA-T?
The 1.5KE200A-T is unidirectional, featuring a cathode band marking and conducting only in reverse avalanche mode; the 1.5KE200CA-T is bidirectional, marked without a cathode band, and clamps surges of either polarity. Their VBR, VC, and power ratings are identical, but circuit topology determines selection - unidirectional for DC rails with defined ground reference, bidirectional for AC or floating signal lines.
Can 1.5KE200A-T be used in place of a MOV for surge protection?
No - MOVs offer higher energy absorption per unit volume but degrade with repeated surges and exhibit higher clamping voltage drift. The 1.5KE200A-T provides precise, stable clamping (±5% VBR), sub-1 ns response, and no wear-out mechanism, making it superior for protecting sensitive electronics where voltage overshoot must be tightly controlled - unlike MOVs, which are better suited for bulk energy diversion upstream.
Is 1.5KE200A-T qualified to AEC-Q101?
No - while Diodes offers AEC-Q101-qualified TVS devices (e.g., D12V0L4U2), the 1.5KE200A-T is not AEC-Q101 certified. It meets industrial and commercial reliability standards and is widely used in automotive aftermarkets and non-safety-critical modules, but formal qualification requires documented test reports per AEC-Q101 Rev D, which are not published for this part.
What is the derating behavior above +25°C ambient?
Peak pulse power derates linearly above +25°C: at +75°C, PPK drops to ~1125W (75% of 1500W); at +125°C, it falls to ~750W (50%). Steady-state power dissipation remains 5.0W up to TL = +75°C with 9.5 mm lead length, but thermal resistance (RθJA) increases significantly on PCBs without copper heatsinking, limiting continuous use in high-ambient environments.
1.5KE200A-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):
- 171V
- Voltage - Breakdown (Min):
- 190V
- Voltage - Clamping (Max) @ Ipp:
- 274V
- Current - Peak Pulse (10/1000µs):
- 5.5A
- 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
1.5KE200A-T FAQ
1.How can I place an order for 1.5KE200A-T through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5KE200A-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 1.5KE200A-T reliable?
The price and inventory of 1.5KE200A-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5KE200A-T is usually 5 days.
3.What payment methods are accepted for 1.5KE200A-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5KE200A-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5KE200A-T?
1.5KE200A-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5KE200A-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 1.5KE200A-T?
For technical support, including 1.5KE200A-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5KE200A-T requirements.
6.How does Aetrix verify that 1.5KE200A-T is sourced from the original manufacturer or authorized distributors?
All 1.5KE200A-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 1.5KE200A-T meets industry standards.
7.What is the process for return or replacement of 1.5KE200A-T?
All 1.5KE200A-T units undergo pre-shipment inspection (PSI). If there is an issue with 1.5KE200A-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 1.5KE200A-T part is unused and in its original packaging.
Return procedure for 1.5KE200A-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5KE200A-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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Diodes Incorporated
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