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Vishay General Semiconductor - Diodes Division 1.5KE22A-E3/54
- Part No.:
- 1.5KE22A-E3/54
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-201AA, DO-27, Axial
- Datasheet:
-
1.5KE22A-E3/54.pdf
- Description:
- TVS DIODE 18.8VWM 30.6VC 1.5KE
- Quantity:
- Payment:
- Shipping:
Inventory:2,186
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Product details
Overview
1.5KE22A-E3/54 from Vishay General Semiconductor is a unidirectional Transient Voltage Suppressor (TVS) diode designed for primary overvoltage protection of DC power rails and signal lines. It features a 22 V breakdown voltage (VBR = 20.9–23.1 V at 1 mA), 1500 W peak pulse power rating (10/1000 µs), clamping voltage of 30.6 V at 49 A, and operates across –55 °C to +175 °C junction temperature range - deployed in automotive power supply inputs and industrial sensor interface circuits.
For engineers reviewing the 1.5KE22A-E3/54 datasheet, 1.5KE22A-E3/54 pinout, 1.5KE22A-E3/54 application, or 1.5KE22A-E3/54 equivalent, this page delivers verified electrical parameters, JEDEC 1.5KE package details, clamping performance under surge conditions, thermal resistance (RθJA = 75 °C/W), and direct alternatives with documented voltage and power trade-offs.
Technical Context
This unidirectional TVS diode uses a glass-passivated silicon junction optimized for fast transient response (<1 ns) and low incremental surge resistance. Its clamping action begins at VBR = 20.9–23.1 V and limits peak voltage to 30.6 V at 49 A IPPM, enabling robust protection of downstream MOSFETs and ICs against inductive switching spikes and ESD events.
It complies with JEDEC standard 1.5KE case outline, supports 200 A non-repetitive forward surge current (8.3 ms half-sine), and exhibits 0.092 %/°C temperature coefficient of VBR. The device is RoHS-compliant (E3 suffix), commercial-grade, and rated for 6.5 W steady-state power dissipation on infinite heatsink at TL = 75 °C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 20.9 V / 23.1 V at 1 mA - defines precise clamping onset threshold for reliable overvoltage detection |
| VWM | 18.8 V - maximum continuous working voltage before leakage exceeds 1 μA |
| VC @ IPPM | 30.6 V at 49 A - actual clamped voltage during 1500 W transient, critical for protected device voltage margin |
| PPPM | 1500 W (10/1000 µs) - peak surge energy handling capacity without failure |
| IFSM | 200 A (8.3 ms half-sine) - withstands high-current inductive kick without bond wire fusing |
| TJ Range | –55 °C to +175 °C - enables deployment in under-hood automotive and industrial environments |
| RθJA | 75 °C/W - determines required PCB copper area or heatsinking for thermal management at 6.5 W PD |
Pinout & Package
1.5KE22A-E3/54 is housed in the standard axial-lead JEDEC 1.5KE package (Case Style 1.5KE), featuring matte tin-plated leads solderable per J-STD-002 and JESD 22-B102. Polarity is marked by a cathode band; the device is unidirectional.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal | Connected to lower-potential side (e.g., GND or return path) in unidirectional clamp configuration |
| Cathode | Reverse-biased clamping terminal | Connected to protected line (e.g., 24 V rail); conducts only during overvoltage transients above VBR |
Key Features
| Feature | Design Value |
|---|---|
| Glass passivated junction | Ensures stable VBR tolerance and long-term reliability under thermal cycling and humidity stress |
| 1500 W peak pulse power (10/1000 µs) | Protects against severe transients such as ISO 7637-2 Pulse 5a (load dump) in 12 V/24 V automotive systems |
| Clamping voltage ≤ 30.6 V at 49 A | Provides ≥ 3.4 V margin below typical 36 V absolute max rating of industrial microcontrollers and CAN transceivers |
| Response time < 1 ns | Engages before most semiconductor junctions can avalanche, preventing latent damage from fast ESD or lightning-induced surges |
| RoHS-compliant E3 suffix | Meets JESD 201 Class 1A whisker resistance, suitable for lead-free reflow and wave soldering processes |
Applications
| Automotive Power Input Protection | Industrial Sensor Signal Line Protection |
|---|---|
Use Scenario: Protecting 24 V supply input of body control modules against load dump transients up to 60 V/100 ms. IC Role / Device Role / Timing Role: Unidirectional TVS placed between VIN and GND to clamp overvoltage before it reaches DC-DC converter ICs. Use Value: Limits peak rail voltage to 30.6 V during 1500 W surge, preserving input stage integrity of buck controllers rated to 36 V. | Use Scenario: Shielding analog output (4–20 mA) lines of pressure sensors from ESD and field wiring faults. IC Role / Device Role / Timing Role: TVS connected across signal and return lines to absorb ±8 kV contact ESD per IEC 61000-4-2. Use Value: Sub-1 ns response ensures clamping occurs before sensor amplifier input stages experience destructive overvoltage. |
| Telecom DC Feeder Protection | Consumer Appliance Motor Drive Protection |
Use Scenario: Safeguarding PoE-powered equipment front-end from induced surges on long Ethernet runs. IC Role / Device Role / Timing Role: Primary TVS on 48 V DC feed line upstream of hot-swap controller and PMIC. Use Value: 18.8 V VWM allows normal operation while 30.6 V VC protects 52 V-rated power switches and interface ICs. | Use Scenario: Suppressing back-EMF spikes from brushed DC motors in washing machine control boards. IC Role / Device Role / Timing Role: TVS mounted across motor terminals to divert inductive energy away from H-bridge MOSFETs. Use Value: 200 A IFSM rating handles repetitive 100 A motor stall currents without degradation. |
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 (vs. axial 1.5KE), VC = 35.5 V @ 17 A | Better suited for space-constrained PCBs; insufficient for 1500 W load dump events | Select when board area is critical and surge energy is ≤ 600 W (e.g., secondary protection or low-energy interfaces) |
| 1.5KE22CA | Bidirectional variant; same VBR, VC, and PPPM, but symmetric clamping for AC or floating lines | Required for differential signal lines (e.g., RS-485) or AC-coupled circuits where polarity reversal occurs | Choose only if bidirectional clamping is mandated - unidirectional 1.5KE22A-E3/54 offers lower cost and simpler layout for DC rails |
Compared with SMBJ22A and 1.5KE22CA, the 1.5KE22A-E3/54 delivers higher surge robustness in a through-hole package ideal for high-energy industrial and automotive primary protection, while avoiding unnecessary bidirectional complexity or power derating.
Availability
1.5KE22A-E3/54 is available at Aetrix Electronics and suitable for automotive power input protection, industrial sensor interface hardening, and telecom DC feeder safeguarding requiring stable component supply and full traceability.
Supply support for 1.5KE22A-E3/54 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, and protection devices with emphasis on reliability and ruggedized performance.
The 1.5KE series is engineered for high-energy transient suppression in harsh environments - targeting automotive, industrial, and telecom infrastructure where sustained surge immunity and thermal stability are mission-critical.
FAQ
What is the breakdown voltage tolerance of 1.5KE22A-E3/54?
The 1.5KE22A-E3/54 has a specified breakdown voltage range of 20.9 V to 23.1 V at 1 mA test current, representing a ±5% tolerance around the nominal 22 V rating. This tight VBR window ensures consistent clamping behavior across production lots and supports predictable circuit protection margins in designs using the 1.5KE22A-E3/54.
Is 1.5KE22A-E3/54 suitable for automotive load dump protection?
Yes, the 1.5KE22A-E3/54 is widely used for automotive load dump protection due to its 1500 W peak pulse power rating (10/1000 µs), 200 A IFSM, and ability to clamp 24 V system transients to 30.6 V. Its –55 °C to +175 °C operating range and RoHS-compliant E3 construction meet key requirements for under-hood deployment of the 1.5KE22A-E3/54.
How does the clamping voltage of 1.5KE22A-E3/54 compare to its breakdown voltage?
The 1.5KE22A-E3/54 clamps at 30.6 V when subjected to its rated 49 A peak pulse current (IPPM), which is approximately 33% above its minimum breakdown voltage of 20.9 V. This incremental clamping voltage (ΔVC = 9.7 V) reflects the device's low dynamic impedance and ensures protected ICs see minimal overvoltage during surge events involving the 1.5KE22A-E3/54.
What is the thermal resistance of 1.5KE22A-E3/54, and how does it affect layout?
The 1.5KE22A-E3/54 has a typical junction-to-ambient thermal resistance (RθJA) of 75 °C/W. For reliable operation at its 6.5 W steady-state power dissipation limit, PCB layout must provide adequate copper area - typically ≥ 250 mm² of 2 oz copper per lead - to maintain junction temperature within the –55 °C to +175 °C range during extended overload conditions of the 1.5KE22A-E3/54.
Can 1.5KE22A-E3/54 be used in place of a bidirectional TVS like 1.5KE22CA?
No - the 1.5KE22A-E3/54 is unidirectional and must be oriented with cathode toward the protected line; it cannot replace 1.5KE22CA in AC or floating differential applications. Using the 1.5KE22A-E3/54 where bidirectional clamping is required risks failure during reverse-polarity transients. Always verify polarity requirements before substituting the 1.5KE22A-E3/54.
1.5KE22A-E3/54 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:
- Active
- 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-E3/54 FAQ
1.How can I place an order for 1.5KE22A-E3/54 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5KE22A-E3/54 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-E3/54 reliable?
The price and inventory of 1.5KE22A-E3/54 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-E3/54 is usually 5 days.
3.What payment methods are accepted for 1.5KE22A-E3/54?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5KE22A-E3/54 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5KE22A-E3/54?
1.5KE22A-E3/54 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5KE22A-E3/54 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-E3/54?
For technical support, including 1.5KE22A-E3/54 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5KE22A-E3/54 requirements.
6.How does Aetrix verify that 1.5KE22A-E3/54 is sourced from the original manufacturer or authorized distributors?
All 1.5KE22A-E3/54 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-E3/54 meets industry standards.
7.What is the process for return or replacement of 1.5KE22A-E3/54?
All 1.5KE22A-E3/54 units undergo pre-shipment inspection (PSI). If there is an issue with 1.5KE22A-E3/54, 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-E3/54 part is unused and in its original packaging.
Return procedure for 1.5KE22A-E3/54:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5KE22A-E3/54 Tags
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