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Vishay General Semiconductor - Diodes Division 1.5KE22A/54
- Part No.:
- 1.5KE22A/54
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-201AA, DO-27, Axial
- Datasheet:
-
1.5KE22A/54.pdf
- Description:
- TVS DIODE 18.8VWM 30.6VC 1.5KE
- Quantity:
- Payment:
- Shipping:
Inventory:6,248
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Product details
Overview
1.5KE22A from Vishay General Semiconductor is a unidirectional Transient Voltage Suppressor (TVS) diode designed for primary overvoltage protection of sensitive electronics. It features a 20.9 V minimum breakdown voltage (VBR), 18.8 V maximum standoff voltage (VWM), 30.6 V clamping voltage at 49.0 A peak pulse current, and 1500 W peak pulse power rating with 10/1000 µs waveform - deployed across power supply rails, I/O lines, and sensor interfaces in industrial and automotive systems.
For engineers reviewing the 1.5KE22A datasheet, 1.5KE22A pinout, 1.5KE22A application, or 1.5KE22A equivalent, this page delivers verified electrical parameters, thermal derating behavior, clamping performance under surge conditions, JEDEC-standard package dimensions, and AEC-Q101-qualified alternatives where applicable - all confirmed from Vishay's official 88301 document revision 09-Aug-2022.
Technical Context
This unidirectional TVS diode operates as a voltage-clamped shunt protector, activating when transient voltage exceeds its VBR threshold (20.9–23.1 V at 1.0 mA test current) to divert surge current away from downstream circuitry. Its glass-passivated junction ensures stable avalanche characteristics and low incremental surge resistance, enabling sub-nanosecond response time (≤1 ns) to fast-rising transients such as ESD or inductive switching spikes.
The device is rated for 1500 W peak pulse power (10/1000 µs), 200 A non-repetitive forward surge current (8.3 ms half-sine), and operates across –55 °C to +175 °C junction temperature range. Thermal resistance is 15.4 °C/W (junction-to-lead) and 75 °C/W (junction-to-ambient), supporting reliable operation without heatsinking in moderate-power applications.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 20.9 V / 23.1 V at 1.0 mA - defines precise activation threshold for clamping onset |
| VWM | 18.8 V maximum - ensures no conduction during normal 18 V system operation |
| VC @ IPPM | 30.6 V at 49.0 A - limits protected node voltage during worst-case 1500 W surge |
| PPPM | 1500 W (10/1000 µs) - sustains high-energy transients without failure |
| IFSM | 200 A (8.3 ms half-sine) - withstands repetitive inrush or fault currents |
| TJ Range | –55 °C to +175 °C - supports under-hood automotive and industrial ambient extremes |
| RθJL | 15.4 °C/W - enables direct PCB trace heat sinking without external heatsink |
Pinout & Package
1.5KE22A uses the standard axial-leaded Case Style 1.5KE package (JEDEC DO-201AD), with cathode indicated by a color band on the body. Leads are matte tin-plated and solderable per J-STD-002 and JESD 22-B102.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry point during reverse-biased clamping | Connected to protected line; conducts surge current to ground when VIN > VBR |
| Cathode | Current exit point during clamping; marked with band | Connected to system ground or low-impedance return path; establishes unidirectional polarity |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Ensures stable, repeatable avalanche breakdown and long-term reliability under repeated surges |
| 1500 W peak pulse power (10/1000 µs) | Protects against high-energy transients from inductive load switching or lightning-induced surges |
| Sub-nanosecond response time | Clamps within ≤1 ns - faster than MOVs or polymer-based protectors - preserving signal integrity |
| Low incremental surge resistance | Minimizes VC overshoot during high di/dt events, improving clamping precision |
| AEC-Q101 qualified variants available | Enables drop-in use in automotive ECUs and ADAS modules requiring stress-tested components |
Applications
| Industrial Motor Control | Automotive Body Control Module (BCM) |
|---|---|
Use Scenario: Protection of gate drivers and microcontroller I/O pins against voltage spikes from relay coil de-energization and contactor switching. IC Role / Device Role: Unidirectional shunt clamping element placed between 24 V rail and ground, triggered only during overvoltage events. Use Value: Limits transient voltage to ≤30.6 V, preventing latch-up or permanent damage to 3.3 V/5 V logic and MOSFET gate oxides rated ≤40 V. |
Use Scenario: Safeguarding LIN bus transceivers and sensor inputs (e.g., door lock actuators, ambient light sensors) from battery dump and load-dump transients. IC Role / Device Role: Primary front-end TVS on 12 V supply input and bidirectional data lines (with CA variant). Use Value: Withstands 1500 W surges per ISO 7637-2 Pulse 5a while maintaining <1 µA leakage at 18.8 V standby, minimizing quiescent current impact. |
| Telecom Power Supply Input | Consumer Appliance Mainboard |
Use Scenario: Input-stage protection of AC/DC SMPS front-ends exposed to lightning-induced surges on PoE or AC mains-connected equipment. IC Role / Device Role: First-line unidirectional suppressor before bulk capacitor and bridge rectifier, absorbing energy before it reaches active components. Use Value: Clamps 10/1000 µs surges to 30.6 V with 49 A peak current handling - compatible with UL 497B surge protector classification (QVGQ2). |
Use Scenario: Overvoltage protection of MCU reset lines, EEPROM programming pins, and display interface signals in washing machines and HVAC controllers. IC Role / Device Role: Low-capacitance (<100 pF typical) TVS placed directly at IC pin to suppress ESD and board-level coupling. Use Value: Sub-ns response prevents ESD-induced bit flips or brownout resets; RoHS-compliant E3 suffix meets global environmental compliance requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ22A | Lower PPPM (600 W), smaller SMB package (surface-mount), VC = 35.5 V @ 17.1 A | Preferred for space-constrained PCBs; insufficient for 1500 W surge environments | Select when board area is critical and surge energy is ≤600 W; not suitable for load-dump or heavy industrial transients |
| 1.5KE22CA | Bidirectional version; same VBR, VWM, and PPPM; symmetrical clamping in both polarities | Required for AC-coupled or floating signal lines (e.g., RS-485, CAN bus) where polarity reversal occurs | Choose for bidirectional protection; note that 1.5KE22CA is limited to ≤220 V VBR family and shares identical thermal and surge ratings |
Compared with 1.5KE22A, SMBJ22A trades peak power and ruggedness for compactness, while 1.5KE22CA retains full 1500 W capability but enables polarity-agnostic clamping - making the original 1.5KE22A optimal for cost-sensitive, high-energy unidirectional DC rail protection where axial lead mounting is acceptable.
Availability
1.5KE22A is available at Aetrix Electronics and suitable for industrial motor control, automotive body electronics, and telecom power supply designs requiring stable component supply, long-lifecycle support, and traceable sourcing of discrete TVS protection devices.
Supply support for 1.5KE22A 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
Vishay General Semiconductor is a global leader in discrete semiconductors, specializing in diodes, rectifiers, MOSFETs, and protection devices with emphasis on reliability, power handling, and automotive qualification.
The 1.5KE series was engineered specifically for high-energy transient suppression in harsh environments - delivering robust 1500 W surge immunity in a standardized axial package for industrial, automotive, and infrastructure applications.
FAQ
What is the breakdown voltage tolerance for 1.5KE22A?
The 1.5KE22A has a guaranteed breakdown voltage range of 20.9 V to 23.1 V at 1.0 mA test current, per Vishay Document 88301. This ±5% tolerance ensures consistent clamping onset across production lots and supports reliable design margining against system overvoltage thresholds. The parameter is measured under controlled JEDEC conditions and applies to all units shipped with the "A" suffix.
Is 1.5KE22A RoHS compliant and halogen-free?
Yes, the standard 1.5KE22A-E3 variant is RoHS compliant and meets JESD201 Class 1A whisker testing requirements. The "E3" suffix denotes commercial-grade, lead-free, and halogen-free construction per Vishay's material categorization guidelines (www.vishay.com/doc?99912). No brominated flame retardants are used in the UL 94 V-0 epoxy molding compound.
Can 1.5KE22A be used in automotive applications?
Yes - the 1.5KE22AHE3_B variant is AEC-Q101 qualified for automotive use, validated for temperature cycling, humidity bias, and mechanical shock per the standard. While the base 1.5KE22A is commercial grade, the HE3_B suffix adds qualification for under-hood and chassis-mounted modules where junction temperatures reach 175 °C and reliability demands exceed industrial requirements.
What is the maximum clamping voltage of 1.5KE22A at rated surge current?
The maximum clamping voltage (VC) of 1.5KE22A is 30.6 V at 49.0 A peak pulse current (IPPM), measured with a 10/1000 µs waveform. This value represents the upper limit of voltage seen by protected circuitry during worst-case surge events and is critical for ensuring downstream ICs remain within absolute maximum ratings - e.g., safeguarding 3.3 V logic with adequate headroom.
How does thermal derating affect 1.5KE22A's power dissipation above 25 °C?
1.5KE22A's power dissipation (PD) derates linearly above 25 °C ambient: from 6.5 W at TL = 75 °C (per Fig. 5), the device supports ~5.2 W at 100 °C lead temperature and ~2.6 W at 150 °C. Derating follows a slope of –65 mW/°C above 25 °C, based on RθJA = 75 °C/W. For sustained operation, thermal design must ensure leads remain below 175 °C junction limit.
1.5KE22A/54 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-201AA, DO-27, Axial
- Series:
- TransZorb®
- 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:
- 1.5KE
1.5KE22A/54 FAQ
1.How can I place an order for 1.5KE22A/54 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5KE22A/54 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/54 reliable?
The price and inventory of 1.5KE22A/54 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/54 is usually 5 days.
3.What payment methods are accepted for 1.5KE22A/54?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5KE22A/54 transactions.
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4.How is shipping managed for 1.5KE22A/54?
1.5KE22A/54 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5KE22A/54 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/54?
For technical support, including 1.5KE22A/54 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5KE22A/54 requirements.
6.How does Aetrix verify that 1.5KE22A/54 is sourced from the original manufacturer or authorized distributors?
All 1.5KE22A/54 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/54 meets industry standards.
7.What is the process for return or replacement of 1.5KE22A/54?
All 1.5KE22A/54 units undergo pre-shipment inspection (PSI). If there is an issue with 1.5KE22A/54, 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/54 part is unused and in its original packaging.
Return procedure for 1.5KE22A/54:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5KE22A/54 Tags
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