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Diodes Incorporated 1.5KE22CA-T
- Part No.:
- 1.5KE22CA-T
- Manufacturer:
- Diodes Incorporated
- Category:
- TVS Diodes
- Package:
- DO-201AA, DO-27, Axial
- Datasheet:
-
1.5KE22CA-T.pdf
- Description:
- TVS DIODE 18.8VWM 30.6VC DO201
- Quantity:
- Payment:
- Shipping:
Inventory:6,662
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Product details
Overview
1.5KE22CA-T from Diodes Incorporated is a bidirectional 1500W transient voltage suppressor (TVS) diode in DO-201 package, designed for overvoltage protection of DC power lines and signal interfaces. It features a 18.8V reverse standoff voltage, 20.9–23.1V breakdown range at 1mA test current, 30.6V max clamping voltage at 49A peak pulse current, and operates across –55°C to +175°C.
For engineers reviewing the 1.5KE22CA-T datasheet, 1.5KE22CA-T pinout, 1.5KE22CA-T application, or 1.5KE22CA-T equivalent, this device is selected for robust surge immunity in automotive body electronics, industrial I/O protection, and telecom power rail clamping where fast response (<1ns), low leakage (<5μA @ 18.8V), and high peak power handling are critical.
Technical Context
This bidirectional TVS diode uses a glass-passivated silicon junction to achieve stable breakdown characteristics and excellent clamping ratio (VC/VRWM ≈ 1.63). Its axial-leaded DO-201 package supports through-hole mounting with 9.5mm lead length thermal derating and meets UL 94V-0 flammability rating.
The device delivers 1500W peak pulse power (10/1000μs waveform), exhibits <0.092%/°C voltage temperature coefficient, and maintains ≤5μA reverse leakage at VRWM - enabling reliable operation in harsh environments without thermal runaway or parameter drift.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Pulse Power | 1500W (10/1000μs waveform); sustains single high-energy surges without failure |
| Reverse Standoff Voltage | 18.8V; maximum continuous DC or RMS voltage before significant leakage |
| Breakdown Voltage Range | 20.9–23.1V @ 1mA; tight VBR tolerance ensures predictable turn-on during transients |
| Max Clamping Voltage | 30.6V @ 49A IPP; limits downstream circuit voltage to safe level during surge |
| Peak Pulse Current | 49A (10/1000μs); quantifies surge-handling capacity under standardized test condition |
| Operating Temperature | –55°C to +175°C; supports under-hood automotive and industrial ambient extremes |
| Leakage Current | ≤5μA @ 18.8V; minimizes standby power loss and avoids false triggering |
Pinout & Package
DO-201 axial-leaded package with two terminals: anode and cathode. Marking for bidirectional version (suffix 'C') omits cathode band; polarity is non-directional. Leads are tin-finished, solderable per MIL-STD-202 Method 208, with 9.5mm lead length specified for thermal derating.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Transient current entry (bidirectional) | Accepts surge current from either polarity; no fixed polarity reference |
| Cathode | Transient current exit (bidirectional) | Completes clamping path regardless of surge polarity; symmetric conduction |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated die construction | Enhances long-term reliability and moisture resistance vs. epoxy-only passivation |
| 1500W peak pulse power rating | Enables protection against IEC 61000-4-5 Level 4 (4kV/2Ω) surges on 24V systems |
| Bidirectional configuration | Clamps both positive and negative transients without external polarity management |
| RoHS-compliant, halogen-free "Green" finish | Meets automotive and industrial environmental compliance requirements (Br+Cl <1500ppm) |
| Fast response time (<1 ns) | Activates before sensitive downstream ICs experience damaging overvoltage |
Applications
| Automotive Body Control Module (BCM) | Industrial PLC Digital Input Protection |
|---|---|
Use Scenario: Protects 12V/24V power rails and LIN/CAN stub lines from load dump and inductive switching transients in vehicle door modules and lighting controllers. IC Role / Device Role: Primary clamping element placed directly at connector entry point before LDOs and microcontrollers. Use Value: Limits clamped voltage to 30.6V, preventing damage to 36V-rated regulators and ensuring ASIL-B functional safety compliance. |
Use Scenario: Shields 24V digital input channels on programmable logic controllers from field-wiring ESD and relay coil flyback spikes. IC Role / Device Role: Front-end transient absorber mounted adjacent to terminal block, before optocoupler input stage. Use Value: Withstands 49A pulses without degradation, maintaining channel integrity across 100,000+ switching cycles. |
| Telecom Power Supply Output Rail | Smart Meter AC/DC Auxiliary Power Input |
Use Scenario: Guards +48V DC output of telecom rectifiers against lightning-induced surges entering via distribution cabling. IC Role / Device Role: Secondary-level TVS placed after bulk filter capacitors and before DC-DC converters. Use Value: 1500W rating handles multi-kA induced surges while 30.6V clamping preserves 50V-rated downstream FETs and controllers. |
Use Scenario: Protects auxiliary 12V supply derived from mains-connected SMPS in utility smart meters exposed to conducted surges per IEC 61000-4-5. IC Role / Device Role: First-line defense on secondary-side DC bus, upstream of MCU and RTC power domains. Use Value: –55°C to +175°C operating range ensures functionality during meter enclosure temperature excursions in outdoor deployments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ22CA | 600W rating, SMB surface-mount package, same 22V bidirectional clamping profile | Requires PCB rework for SMT assembly; lower surge margin for 4kV IEC 61000-4-5 testing | Select when board space is constrained and peak surge energy is ≤600W |
| 1.5SMC22CA | Same 1500W rating, SMC package, identical electrical specs but higher thermal resistance (RθJA = 50°C/W vs. DO-201's 30°C/W) | Less effective heat dissipation in high-ambient or high-duty-cycle surge environments | Prefer only if automated SMT placement is mandatory and thermal derating is verified |
Compared with 1.5KE22CA-T, SMBJ22CA trades surge capacity for compactness, while 1.5SMC22CA retains power rating but sacrifices thermal performance - making the DO-201 axial-leaded variant optimal for high-reliability through-hole designs requiring proven thermal margin and legacy compatibility.
Availability
1.5KE22CA-T is available at Aetrix Electronics and suitable for automotive body electronics, industrial PLC I/O protection, and telecom power supply rail clamping requiring stable component supply and long-lifecycle support.
Supply support for 1.5KE22CA-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.
This part belongs to the 1.5KE series of high-power axial-leaded TVS diodes, engineered specifically for cost-effective, high-reliability overvoltage protection in automotive, industrial, and infrastructure applications where through-hole robustness and thermal stability are prioritized.
FAQ
Is 1.5KE22CA-T suitable for automotive AEC-Q200 qualification?
No - while Diodes Incorporated manufactures this device in IATF 16949-certified facilities and supports PPAP documentation, the 1.5KE22CA-T itself is not AEC-Q200 qualified. For automotive-grade applications requiring formal stress testing, Diodes offers the AEC-Q200-qualified P6SMBJ22CA or SMAJ22CA series instead.
What is the difference between 1.5KE22A and 1.5KE22CA-T?
The "A" suffix denotes unidirectional operation with cathode marking; "CA" indicates bidirectional symmetry and no cathode band. Both share identical DO-201 packaging and 1500W rating, but 1.5KE22CA-T clamps surges of either polarity, eliminating need for polarity-aware layout or external diode pairing.
Can 1.5KE22CA-T replace 1.5KE20CA in an existing design?
Yes, with verification: 1.5KE22CA-T has higher VRWM (18.8V vs. 17.1V) and VBR (20.9–23.1V vs. 18.8–21.0V), resulting in ~1.7V higher clamping voltage (30.6V vs. 27.7V). Confirm downstream components tolerate the increased clamped voltage and that system surge profiles remain within 49A limit.
Does the "-T" suffix indicate tape-and-reel packaging?
Yes - the "-T" suffix specifies 1k units per 13-inch tape-and-reel carrier, optimized for automated through-hole insertion equipment. The "-B" suffix denotes bulk packaging. Both share identical electrical and mechanical specifications; only packaging format differs.
1.5KE22CA-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):
- 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
1.5KE22CA-T FAQ
1.How can I place an order for 1.5KE22CA-T through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5KE22CA-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 1.5KE22CA-T reliable?
The price and inventory of 1.5KE22CA-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5KE22CA-T is usually 5 days.
3.What payment methods are accepted for 1.5KE22CA-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5KE22CA-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5KE22CA-T?
1.5KE22CA-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5KE22CA-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 1.5KE22CA-T?
For technical support, including 1.5KE22CA-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5KE22CA-T requirements.
6.How does Aetrix verify that 1.5KE22CA-T is sourced from the original manufacturer or authorized distributors?
All 1.5KE22CA-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 1.5KE22CA-T meets industry standards.
7.What is the process for return or replacement of 1.5KE22CA-T?
All 1.5KE22CA-T units undergo pre-shipment inspection (PSI). If there is an issue with 1.5KE22CA-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 1.5KE22CA-T part is unused and in its original packaging.
Return procedure for 1.5KE22CA-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5KE22CA-T Tags
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ESD9B5.0ST5G
onsemi
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DESD3V3E1BL-7B
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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Toshiba Semiconductor and Storage
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Diodes Incorporated
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