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Vishay General Semiconductor - Diodes Division 1.5KE22-E3/73
- Part No.:
- 1.5KE22-E3/73
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-201AA, DO-27, Axial
- Datasheet:
-
1.5KE22-E3/73.pdf
- Description:
- TVS DIODE 17.8VWM 31.9VC 1.5KE
- Quantity:
- Payment:
- Shipping:
Inventory:7,236
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Product details
Overview
1.5KE22-E3/73 from Vishay General Semiconductor is a unidirectional Transient Voltage Suppressor (TVS) diode designed for primary overvoltage protection in 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 (10/1000 µs), clamping voltage of 30.6 V at 49 A, and operates across –55 °C to +175 °C junction temperature. It is used to protect MOSFETs, ICs, and sensor interfaces against lightning-induced surges and inductive switching transients.
For engineers reviewing the 1.5KE22-E3/73 datasheet, 1.5KE22-E3/73 pinout, 1.5KE22-E3/73 application, or 1.5KE22-E3/73 equivalent, this page delivers verified electrical parameters, JEDEC-standardized package dimensions, thermal resistance (RθJA = 75 °C/W), polarity marking convention (cathode band), and AEC-Q101-comparable alternatives for automotive-grade designs.
Technical Context
This TVS diode employs a glass-passivated silicon junction optimized for fast transient response (<1 ns) and low incremental surge resistance. Its unidirectional configuration enables integration into DC-biased circuits where reverse-polarity blocking is required - such as 24 V industrial control inputs or automotive body electronics supply lines.
The device complies with JEDEC standard 1.5KE case style, uses matte tin-plated leads solderable per J-STD-002, and supports 275 °C solder dip (10 s max). Its 1500 W pulse rating is specified under 10/1000 µs waveform with 0.01 % duty cycle, and derates linearly above 25 °C ambient per Fig. 2 in the datasheet.
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 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 downstream component survivability |
| PPPM | 1500 W - peak surge power handling capability with 10/1000 µs waveform, enabling robust lightning strike immunity |
| RθJA | 75 °C/W - thermal resistance from junction to ambient, determines required PCB copper area for sustained 6.5 W dissipation |
| TJ max | +175 °C - maximum junction temperature, supports operation in under-hood automotive or high-temperature industrial enclosures |
| IF surge | 200 A (8.3 ms half-sine) - forward surge current rating confirms suitability for DC bus fault protection |
Pinout & Package
1.5KE22-E3/73 uses the industry-standard DO-201AD (Case Style 1.5KE) axial-leaded package: 1.0 inch (25.4 mm) minimum body length, 0.375 inch (9.5 mm) lead length, 0.210 inch (5.3 mm) max body diameter, and 0.042 inch (1.07 mm) lead diameter. The cathode is marked by a color band on one end.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry point | Connected to lower-potential side (e.g., GND or return path) in unidirectional clamp configuration |
| Cathode | Reverse-biased clamping node | Connected to protected line (e.g., 24 V rail); color band identifies this terminal for correct PCB orientation |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Enables stable VBR tolerance (±5 %) and long-term reliability under humidity and thermal cycling |
| 1500 W peak pulse power | Supports IEC 61000-4-5 Level 4 (4 kV) surge immunity without external series impedance |
| Clamping ratio (VC/VBR) | 1.31 - low ratio ensures minimal overvoltage stress on protected ICs during transient events |
| Response time | <1 ns - faster than MOVs or polymer-based suppressors, preserving signal integrity in high-speed interfaces |
| RoHS-compliant E3 suffix | Meets JESD 201 Class 1A whisker resistance, qualified for commercial-grade automated assembly |
Applications
| Industrial Motor Control Inputs | Automotive Body Control Module (BCM) Power Rails |
|---|---|
Use Scenario: Protection of 24 V digital input channels against inductive kickback from solenoid valves and relay coils. IC Role / Device Role: Primary shunt clamp placed between input line and ground, absorbing energy before it reaches optocoupler or microcontroller GPIO. Use Value: Limits transient voltage to ≤30.6 V, preventing latch-up or gate oxide damage in downstream logic-level receivers. | Use Scenario: Surge suppression on 12 V battery-fed power supplies feeding BCM microcontrollers and CAN transceivers. IC Role / Device Role: Unidirectional TVS connected anode-to-ground, cathode-to-rail, clamping load dump and jump-start spikes. Use Value: Withstands 200 A 8.3 ms surge and maintains VC ≤30.6 V, ensuring uninterrupted operation during ISO 7637-2 Pulse 5a events. |
| Telecom Line Interface Cards | Consumer Appliance Sensor Signal Lines |
Use Scenario: Protection of RS-485 transceiver inputs exposed to induced lightning on outdoor cabling. IC Role / Device Role: Standoff protection element placed upstream of series current-limiting resistor and transceiver, referenced to local ground. Use Value: Fast <1 ns response prevents data corruption during 10/1000 µs surges up to 1500 W, meeting ITU-T K.20 requirements. | Use Scenario: Shielding analog temperature or pressure sensor outputs (e.g., 0–5 V ratiometric) from ESD and board-level transients. IC Role / Device Role: Low-capacitance unidirectional clamp on sensor output trace, grounded at MCU ADC reference plane. Use Value: Clamps transients to 30.6 V while adding negligible loading (<1 µA leakage at 18.8 V), preserving measurement accuracy. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ22A | DO-214AA package (smaller footprint), 600 W PPPM, VC = 33.2 V @ 18.9 A | Limited to lower-energy transients; not suitable for IEC 61000-4-5 Level 4 | Select when space-constrained PCB layout prioritizes size over peak power handling |
| 1.5KE22AHE3_B | Same 1.5KE package, identical electrical specs, but AEC-Q101 qualified and HE3 whisker-tested (Class 2) | Approved for automotive under-hood use per AEC-Q101; higher reliability screening | Choose for production automotive programs requiring qualification evidence and extended temperature validation |
Compared with 1.5KE22-E3/73, SMBJ22A trades 60 % lower surge capacity for 40 % smaller board area, while 1.5KE22AHE3_B retains full 1500 W performance with added automotive qualification - making the original ideal for cost-sensitive industrial applications needing proven commercial-grade robustness.
Availability
1.5KE22-E3/73 is available at Aetrix Electronics and suitable for industrial motor drives, automotive body electronics, telecom infrastructure, and consumer appliance designs requiring stable component supply and long-term obsolescence management.
Supply support for 1.5KE22-E3/73 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, power handling, and automotive qualification.
The 1.5KE family was engineered for high-energy transient suppression in harsh environments, targeting industrial automation, transportation, and infrastructure systems where failure due to voltage surges must be eliminated.
FAQ
What is the breakdown voltage tolerance for 1.5KE22-E3/73?
The 1.5KE22-E3/73 has a guaranteed breakdown voltage range of 20.9 V to 23.1 V at 1 mA test current, corresponding to a ±5 % tolerance around the nominal 22 V rating. This tight VBR window ensures consistent clamping behavior across production lots and supports reliable system-level surge margin calculations in designs using the 1.5KE22-E3/73.
Is 1.5KE22-E3/73 suitable for automotive applications?
The 1.5KE22-E3/73 is rated for operation from –55 °C to +175 °C and meets RoHS and JESD 201 Class 1A whisker requirements, but it is not AEC-Q101 qualified. For production automotive use, Vishay offers the functionally identical 1.5KE22AHE3_B variant - which carries AEC-Q101 certification and is recommended instead of the 1.5KE22-E3/73 for under-hood or safety-critical vehicle subsystems.
How does the clamping voltage of 1.5KE22-E3/73 compare to its breakdown voltage?
The 1.5KE22-E3/73 clamps at 30.6 V when subjected to its maximum rated surge current of 49 A (10/1000 µs waveform), resulting in a clamping ratio of 1.31 relative to its minimum VBR of 20.9 V. This low ratio reflects efficient energy absorption and ensures protected components experience minimal overvoltage - a key advantage over higher-ratio suppressors like certain MOVs or polymer devices.
Can 1.5KE22-E3/73 be used in bidirectional configurations?
No - the 1.5KE22-E3/73 is a unidirectional TVS diode, identified by the "A" suffix and cathode band marking. Bidirectional variants use the "CA" suffix (e.g., 1.5KE22CA) and lack polarity markings. Using the 1.5KE22-E3/73 in AC or floating applications would result in unintended forward conduction; always select the CA version for symmetrical transient suppression.
What is the thermal resistance and how does it affect PCB layout for 1.5KE22-E3/73?
The 1.5KE22-E3/73 has a typical junction-to-ambient thermal resistance (RθJA) of 75 °C/W. To sustain its 6.5 W steady-state power dissipation limit at +75 °C lead temperature (Fig. 5), the PCB must provide adequate copper area - typically ≥1 in² (6.5 cm²) of 2 oz copper connected to both leads. Insufficient copper will cause premature thermal shutdown or parametric drift during repeated surge events.
1.5KE22-E3/73 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-201AA, DO-27, Axial
- Series:
- TransZorb®
- Packaging:
- Tape & Box (TB)
- Product Status:
- Obsolete
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 17.8V
- Voltage - Breakdown (Min):
- 19.8V
- Voltage - Clamping (Max) @ Ipp:
- 31.9V
- Current - Peak Pulse (10/1000µs):
- 47A
- 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
1.5KE22-E3/73 FAQ
1.How can I place an order for 1.5KE22-E3/73 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5KE22-E3/73 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 1.5KE22-E3/73 reliable?
The price and inventory of 1.5KE22-E3/73 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5KE22-E3/73 is usually 5 days.
3.What payment methods are accepted for 1.5KE22-E3/73?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5KE22-E3/73 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5KE22-E3/73?
1.5KE22-E3/73 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5KE22-E3/73 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 1.5KE22-E3/73?
For technical support, including 1.5KE22-E3/73 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5KE22-E3/73 requirements.
6.How does Aetrix verify that 1.5KE22-E3/73 is sourced from the original manufacturer or authorized distributors?
All 1.5KE22-E3/73 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 1.5KE22-E3/73 meets industry standards.
7.What is the process for return or replacement of 1.5KE22-E3/73?
All 1.5KE22-E3/73 units undergo pre-shipment inspection (PSI). If there is an issue with 1.5KE22-E3/73, 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 1.5KE22-E3/73 part is unused and in its original packaging.
Return procedure for 1.5KE22-E3/73:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5KE22-E3/73 Tags
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