My Inquiry
My Account
Diodes Incorporated 1.5KE22A-T
- Part No.:
- 1.5KE22A-T
- Manufacturer:
- Diodes Incorporated
- Category:
- TVS Diodes
- Package:
- DO-201AA, DO-27, Axial
- Datasheet:
-
1.5KE22A-T.pdf
- Description:
- TVS DIODE 18.8VWM 30.6VC DO201
- Quantity:
- Payment:
- Shipping:
Inventory:4,514
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
1.5KE22A-T from Diodes Incorporated is a unidirectional 1500W transient voltage suppressor (TVS) diode in DO-201 axial package, designed for primary overvoltage protection at DC power inputs and signal lines. It features a 20.9V minimum breakdown voltage, 30.6V maximum clamping voltage at 49A peak pulse current, and operates across –55°C to +175°C.
For engineers reviewing the 1.5KE22A-T datasheet, 1.5KE22A-T pinout, 1.5KE22A-T application, or 1.5KE22A-T equivalent, key selection criteria include standoff voltage margin, clamping ratio, surge current handling under 1.0ms waveform, and compatibility with IATF 16949-certified automotive supply chains.
Technical Context
This TVS diode uses glass-passivated silicon junction technology to achieve fast response time (<1.0 ps) and stable clamping performance under repetitive or single-event transients. Its unidirectional configuration provides low forward voltage drop (3.5V @ 50A) while blocking reverse leakage ≤5.0μA at 18.8V standoff.
The device is rated for 1500W peak pulse power (tP = 1.0 ms, 10/1000μs waveform), with thermal derating above +25°C ambient and steady-state power dissipation of 5.0W at 75°C lead temperature. Voltage temperature coefficient is +0.092%/°C, enabling predictable behavior across industrial temperature ranges.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Pulse Power | 1500W - sustains 49A @ 30.6V clamping for 1.0ms, protecting against IEC 61000-4-5 Level 4 surges |
| Reverse Standoff Voltage | 18.8V - maximum continuous DC operating voltage before significant leakage begins |
| Breakdown Voltage | 20.9V–23.1V @ 1.0mA - ensures reliable triggering above normal operating rail with margin |
| Clamping Voltage | 30.6V @ 49A - limits downstream circuit stress during surge events |
| Leakage Current | ≤5.0μA @ 18.8V - minimizes standby power loss and avoids false triggering |
| Operating Temperature | –55°C to +175°C - supports under-hood automotive, industrial motor drives, and outdoor power systems |
| Package | DO-201 - axial-leaded, 1.12g epoxy-molded package compatible with through-hole reflow and wave soldering |
Pinout & Package
DO-201 package: axial-leaded, glass-passivated silicon die in transfer-molded epoxy housing (UL 94V-0). Cathode band identifies polarity on unidirectional variant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal | Connected to system ground or lower-potential node; conducts surge current to ground when reverse-biased beyond VBR |
| Cathode | Reverse-blocking terminal | Connected to protected line (e.g., 24V rail); blocks normal operation up to 18.8V, avalanches during overvoltage |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Enables stable VBR tolerance (±5%) and long-term reliability under humidity and thermal cycling |
| 1500W peak pulse rating | Meets IEC 61000-4-5 surge immunity requirements for industrial and automotive power inputs |
| RoHS-compliant & halogen-free | Complies with EU RoHS 3 (2015/863/EU) and Diodes' "Green" definition (<900ppm Br/Cl, <1000ppm Sb) |
| Axial DO-201 mechanical form | Supports high-current PCB trace routing and mechanical strain relief in high-vibration environments |
| –55°C to +175°C operation | Validated for under-hood automotive ECUs, solar string combiners, and railway power converters |
Applications
| Automotive Body Control Module (BCM) | Industrial PLC Digital Input Card |
|---|---|
Use Scenario: Protects 12V/24V CAN and LIN bus power rails from load dump and alternator ripple transients. IC Role / Device Role / Timing Role: Primary clamping device placed upstream of LDOs and CAN transceivers. Use Value: Clamps 100V/100ms load dump to ≤30.6V, preventing damage to 36V-rated regulators and interface ICs. |
Use Scenario: Shields 24V DC digital input channels from field-wiring induced surges and relay coil flyback. IC Role / Device Role / Timing Role: Front-end transient suppressor on optocoupler input side. Use Value: Limits transient voltage to safe levels for 30V-rated input comparators and microcontroller GPIOs. |
| Solar Photovoltaic String Combiner Box | Medical Infusion Pump Power Supply |
Use Scenario: Guards MPPT controller DC input against lightning-induced surges on rooftop PV strings. IC Role / Device Role / Timing Role: First-stage overvoltage clamp before bulk capacitor and DC-DC converter. Use Value: Absorbs 6kV/3kA surges per IEC 61643-32, maintaining system uptime in outdoor installations. |
Use Scenario: Safeguards 24V auxiliary power rail feeding motor drivers and sensor front-ends. IC Role / Device Role / Timing Role: Secondary surge protection after EMI filter, before isolated DC-DC stage. Use Value: Prevents latch-up or permanent failure in safety-critical analog sensing circuits during hospital-grade ESD events. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ22A (Diodes Inc.) | Same VRWM (18.8V), lower PPK (600W), SMB surface-mount package | Requires PCB redesign for SMT assembly; unsuitable for high-current axial mounting | Select when board space is constrained and surge energy is ≤600W |
| 1N6267A (ON Semiconductor) | Identical DO-201 package, same 1500W rating, but ±6% VBR tolerance vs. ±5% | Acceptable where tighter breakdown voltage control is not required for system margin | Choose for legacy design continuity if sourcing 1N6267A remains viable |
Compared with 1.5KE22A-T, SMBJ22A trades surge capacity for footprint reduction, while 1N6267A offers equivalent robustness with slightly relaxed voltage tolerance-both require validation of clamping performance under actual system surge profiles.
Availability
1.5KE22A-T is available at Aetrix Electronics and suitable for automotive body electronics, industrial programmable logic controllers, solar photovoltaic combiner boxes, and medical infusion pump power supplies requiring stable component supply across extended product lifecycles.
Supply support for 1.5KE22A-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' high-power TVS diode portfolio, engineered specifically for ruggedized overvoltage protection in automotive, industrial, and renewable energy systems where reliability under extreme thermal and electrical stress is critical.
FAQ
What is the difference between 1.5KE22A-T and 1.5KE22CA-T?
The 1.5KE22A-T is unidirectional, featuring a cathode band marking and forward conduction capability (VF = 3.5V @ 50A), while the 1.5KE22CA-T is bidirectional with no polarity marking and symmetrical clamping in both directions. Unidirectional types are used for DC line protection; bidirectional for AC or data-line applications.
Can 1.5KE22A-T be used in place of a 24V Zener diode for voltage regulation?
No. The 1.5KE22A-T is a transient suppressor, not a voltage regulator. It has wide VBR tolerance (20.9–23.1V) and is not characterized for stable DC regulation. Its leakage rises sharply near VBR, and it lacks the tight dynamic impedance needed for precision regulation.
Is 1.5KE22A-T qualified to AEC-Q101?
No. While manufactured in IATF 16949-certified facilities and suitable for automotive applications, the 1.5KE22A-T is not AEC-Q101-qualified. Diodes offers AEC-Q101 variants under the "Automotive Grade" designation (e.g., 1.5KE22A-Q), which undergo additional stress testing and PPAP documentation.
What is the maximum recommended PCB trace width for the anode and cathode leads?
For 49A peak pulse current, Diodes recommends ≥1.5mm (60 mil) copper trace width with 2oz copper weight and thermal reliefs to adjacent planes. Lead-to-pad solder joints must fully wet both sides of the board; axial leads should be bent no closer than 3mm from the epoxy body to avoid mechanical stress fracture.
1.5KE22A-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):
- 18.8V
- Voltage - Breakdown (Min):
- 20.9V
- Voltage - Clamping (Max) @ Ipp:
- 30.6V
- Current - Peak Pulse (10/1000µs):
- 49A
- 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
1.5KE22A-T FAQ
1.How can I place an order for 1.5KE22A-T through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5KE22A-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 1.5KE22A-T reliable?
The price and inventory of 1.5KE22A-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5KE22A-T is usually 5 days.
3.What payment methods are accepted for 1.5KE22A-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5KE22A-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5KE22A-T?
1.5KE22A-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5KE22A-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 1.5KE22A-T?
For technical support, including 1.5KE22A-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5KE22A-T requirements.
6.How does Aetrix verify that 1.5KE22A-T is sourced from the original manufacturer or authorized distributors?
All 1.5KE22A-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 1.5KE22A-T meets industry standards.
7.What is the process for return or replacement of 1.5KE22A-T?
All 1.5KE22A-T units undergo pre-shipment inspection (PSI). If there is an issue with 1.5KE22A-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 1.5KE22A-T part is unused and in its original packaging.
Return procedure for 1.5KE22A-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5KE22A-T Tags
-
ESD9B5.0ST5G
onsemi
-
DESD3V3E1BL-7B
Diodes Incorporated
-
ESD5Z3.3T1G
onsemi
-
D5V0H1B2LP-7B
Diodes Incorporated
-
D5V0P1B2LP-7B
Diodes Incorporated
-
DESD5V0U1BA-7
Diodes Incorporated
-
ESD5Z5.0T1G
onsemi
-
DESD5V0U1BB-7
Diodes Incorporated
-
D12V0L1B2LP-7B
Diodes Incorporated
-
PESD2V0Y1BSFYL
Nexperia USA Inc.
-
DF2S5M4CT,L3F
Toshiba Semiconductor and Storage
-
D5V0L1B2WS-7
Diodes Incorporated
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
