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Diodes Incorporated 1.5KE220A-T
- Part No.:
- 1.5KE220A-T
- Manufacturer:
- Diodes Incorporated
- Category:
- TVS Diodes
- Package:
- DO-201AA, DO-27, Axial
- Datasheet:
-
1.5KE220A-T.pdf
- Description:
- TVS DIODE 185VWM 328VC DO201
- Quantity:
- Payment:
- Shipping:
Inventory:6,359
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Product details
Overview
1.5KE220A-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 185V reverse standoff voltage, 209–231V breakdown range at 1mA, 328V max clamping voltage at 4.6A peak pulse current, and operates from –55°C to +175°C.
For engineers reviewing the 1.5KE220A-T datasheet, 1.5KE220A-T pinout, 1.5KE220A-T application, or 1.5KE220A-T equivalent, key selection criteria include clamping ratio (VC/VRWM ≈ 1.77), temperature coefficient (0.108%/°C), RoHS-compliant lead-free finish, and DO-201 axial-leaded mechanical compatibility with legacy PCB layouts.
Technical Context
This unidirectional TVS diode uses a glass-passivated silicon junction to achieve fast response time (<1.0 ps) and stable clamping under 1.0ms 8/20μs surge waveforms. Its 1500W peak pulse power rating is specified at tP = 1.0ms with derating above +25°C ambient.
The device exhibits low leakage (<5.0μA at VR = 185V), 3.5V forward voltage at 50A pulse, and a voltage temperature coefficient of +0.108%/°C - enabling predictable clamping behavior across automotive and industrial temperature ranges.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Pulse Power | 1500W at tP = 1.0ms - sustains single high-energy transients without failure |
| Reverse Standoff Voltage (VRWM) | 185V - maximum continuous DC or RMS voltage before significant leakage |
| Breakdown Voltage (VBR) | 209–231V @ 1mA - precise conduction onset threshold for overvoltage triggering |
| Max Clamping Voltage (VC) | 328V @ IPP = 4.6A - limits protected circuit voltage during worst-case surge |
| Operating Temperature | –55°C to +175°C - supports under-hood automotive and industrial environments |
| Leakage Current (IR) | ≤5.0μA @ 185V - minimal standby power loss and signal integrity impact |
Pinout & Package
Package: DO-201 axial-leaded, transfer-molded epoxy housing (UL 94V-0 rated), 1.12g mass, tin-finished leads solderable per MIL-STD-202 Method 208. Cathode identified by band marking.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Low-side connection point | Connected to ground or low-voltage reference; completes clamping path during overvoltage |
| Cathode | High-side connection point | Connected to protected line; conducts when line voltage exceeds VRWM + VBR tolerance |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated die construction | Enhances long-term reliability and moisture resistance in harsh environments |
| 1500W peak pulse rating | Meets IEC 61000-4-5 Level 4 (4kV line-to-line, 2kV line-to-ground) surge immunity |
| RoHS-compliant, halogen-free "Green" finish | Complies with EU Directive 2015/863/EU and automotive PPAP requirements |
| Fast response time | Sub-nanosecond turn-on ensures clamping before downstream IC damage occurs |
Applications
| Automotive Power Rail Protection | Industrial PLC Input Protection |
|---|---|
Use Scenario: 24V battery-supplied ECU power input subjected to load dump (ISO 16750-2) and jump-start surges. IC Role / Device Role / Timing Role: Primary clamping element placed upstream of DC/DC converter and LDO regulators. Use Value: Limits transient voltage to ≤328V, preventing gate oxide rupture in MOSFETs and overvoltage shutdown in PMICs. |
Use Scenario: 24V digital input channel on programmable logic controller exposed to inductive kickback from solenoid valves. IC Role / Device Role / Timing Role: Front-end surge absorber on optocoupler input side, before series current-limiting resistor. Use Value: Absorbs 4.6A peak pulses without degradation, preserving signal integrity and eliminating false triggering. |
| Telecom Line Interface Protection | Renewable Energy Inverter DC Link |
Use Scenario: RS-485 transceiver power rail in outdoor base station equipment subject to lightning-induced surges. IC Role / Device Role / Timing Role: Secondary protection stage after gas discharge tube (GDT), providing low-clamp refinement. Use Value: Tight clamping ratio (1.77× VRWM) prevents latch-up in ±5V transceiver supply domains. |
Use Scenario: DC bus between PV array and MPPT controller in solar inverters, where voltage can exceed 200V during open-circuit conditions. IC Role / Device Role / Timing Role: Overvoltage clamp on high-side DC link monitoring circuitry. Use Value: Withstands 175°C junction temperature, enabling direct mounting near heatsinks without thermal derating. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ220A | Lower peak power (600W), SMC package (surface-mount), 333V clamping at 3.6A | Not suitable for 1500W surge events; requires PCB layout change from axial to SMT | Select only if board space is constrained and surge energy is ≤600W |
| 1N5388B | Zener-based, 5W steady-state only, no defined peak pulse rating, 220V Zener voltage | Lacks transient energy absorption capability; cannot replace TVS function | Not a functional alternative - use only for voltage regulation, not surge protection |
Compared with SMBJ220A and 1N5388B, the 1.5KE220A-T delivers verified 1500W single-pulse handling in a through-hole package with documented clamping performance, making it the sole option among the three qualified for ISO 16750-2 load dump compliance.
Availability
1.5KE220A-T is available at Aetrix Electronics and suitable for automotive power systems, industrial control inputs, telecom interface protection, and renewable energy DC-link monitoring requiring stable component supply and long-lifecycle support.
Supply support for 1.5KE220A-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 product qualification to AEC-Q101 standards.
The 1.5KExxA series belongs to Diodes' high-power TVS portfolio, engineered specifically for robust overvoltage protection in automotive, industrial, and infrastructure applications where reliability under extreme surge conditions is critical.
FAQ
What is the difference between 1.5KE220A-T and 1.5KE220CA-T?
The 1.5KE220A-T is unidirectional, with cathode band marking and clamping only during positive transients relative to ground. The 1.5KE220CA-T is bidirectional, symmetrically clamps both polarities, lacks cathode marking, and has identical VRWM (185V) but double the leakage limit (10μA) for VR ≤10V - though irrelevant here since its VR is 185V.
Can 1.5KE220A-T be used in parallel for higher surge current handling?
No - due to parameter spread in VBR (209–231V), paralleling units causes current imbalance and thermal runaway. Diodes does not recommend parallel operation. For >4.6A peak current, select a higher-rated part like 3KP220A (3000W) or verify derated single-device performance per IEC 61000-4-5 test profiles.
Is 1.5KE220A-T compliant with AEC-Q101?
Yes - Diodes Incorporated qualifies the 1.5KE220A-T to AEC-Q101 Rev D for stress testing including HTGB, HTRB, TCT, and surge, with full PPAP documentation available upon request for automotive customers.
What is the meaning of the "-T" suffix in 1.5KE220A-T?
The "-T" denotes tape-and-reel packaging: 1,000 pieces per 13-inch reel. This format enables automated pick-and-place assembly. The "-B" suffix indicates bulk packaging (1,000 pieces in tray or bag), while the base part number "1.5KE220A" refers to the device itself, independent of packaging.
1.5KE220A-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):
- 185V
- Voltage - Breakdown (Min):
- 209V
- Voltage - Clamping (Max) @ Ipp:
- 328V
- Current - Peak Pulse (10/1000µs):
- 4.6A
- 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
1.5KE220A-T FAQ
1.How can I place an order for 1.5KE220A-T through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5KE220A-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 1.5KE220A-T reliable?
The price and inventory of 1.5KE220A-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5KE220A-T is usually 5 days.
3.What payment methods are accepted for 1.5KE220A-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5KE220A-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5KE220A-T?
1.5KE220A-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5KE220A-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 1.5KE220A-T?
For technical support, including 1.5KE220A-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5KE220A-T requirements.
6.How does Aetrix verify that 1.5KE220A-T is sourced from the original manufacturer or authorized distributors?
All 1.5KE220A-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 1.5KE220A-T meets industry standards.
7.What is the process for return or replacement of 1.5KE220A-T?
All 1.5KE220A-T units undergo pre-shipment inspection (PSI). If there is an issue with 1.5KE220A-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 1.5KE220A-T part is unused and in its original packaging.
Return procedure for 1.5KE220A-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5KE220A-T Tags
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