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Vishay General Semiconductor - Diodes Division 1.5KE22CHE3/73
- Part No.:
- 1.5KE22CHE3/73
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-201AA, DO-27, Axial
- Datasheet:
-
1.5KE22CHE3/73.pdf
- Description:
- TVS DIODE 17.8VWM 31.9VC 1.5KE
- Quantity:
- Payment:
- Shipping:
Inventory:9,940
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Product details
Overview
1.5KE22CHE3/73 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), 18.8 V maximum standoff voltage (VWM), 30.6 V clamping voltage (VC) at 49.0 A peak pulse current, and 1500 W peak pulse power rating with 10/1000 µs waveform.
For engineers reviewing the 1.5KE22CHE3/73 datasheet, 1.5KE22CHE3/73 pinout, 1.5KE22CHE3/73 application, or 1.5KE22CHE3/73 equivalent, this device is selected for robust surge immunity in automotive ECUs, industrial I/O modules, and telecom power supplies where fast clamping (<1 ns), low incremental surge resistance, and AEC-Q101 qualification are required.
Technical Context
This unidirectional TVS diode uses a glass-passivated silicon junction to achieve sub-nanosecond response time and stable clamping under repetitive transients. Its 1500 W peak pulse power rating is defined per 10/1000 µs waveform with 0.01% duty cycle, and thermal performance is characterized by RθJA = 75 °C/W and RθJL = 15.4 °C/W.
The device operates across –55 °C to +175 °C junction temperature range and supports 200 A non-repetitive forward surge current (IFSM). Forward voltage is specified at 3.5 V @ 100 A, confirming low conduction loss during surge events - critical for protecting downstream MOSFETs and ICs in high-current DC systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 20.9 V / 23.1 V at 1 mA - ensures reliable triggering above normal operating voltage while avoiding false clamping |
| VWM | 18.8 V - maximum continuous reverse working voltage compatible with 15–18 V nominal DC rails |
| VC @ IPPM | 30.6 V at 49.0 A - limits transient voltage seen by protected circuitry to safe levels during 1500 W surges |
| PPPM | 1500 W - handles lightning-induced or inductive-switching transients per IEC 61000-4-5 Level 4 |
| IFSM | 200 A (8.3 ms half-sine) - withstands high-energy single-event surges without bond wire failure |
| TJ max. | +175 °C - enables operation in under-hood automotive and high-temperature industrial environments |
| Package | DO-201AD (Case Style 1.5KE) - industry-standard axial leaded package with 0.375" lead length, UL 94 V-0 compliant epoxy |
Pinout & Package
1.5KE22CHE3/73 is housed in a DO-201AD (Case Style 1.5KE) axial-leaded package. The cathode is marked by a color band on the body; leads are matte tin-plated and solderable per J-STD-002 and JESD 22-B102. Package dimensions conform to JEDEC outline: 0.210" × 0.190" body diameter, 0.375" lead length.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Low-side connection point | Connected to ground or low-voltage reference; carries full surge current during clamping |
| Cathode | High-side connection point | Connected to protected line; reverse-biased during normal operation, conducts during overvoltage |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Ensures stable VBR tolerance (±5%) and long-term reliability under humidity and thermal cycling |
| 1500 W peak pulse power (10/1000 µs) | Meets IEC 61000-4-5 surge immunity requirements for industrial and automotive applications |
| AEC-Q101 qualified (HE3 suffix) | Validated for automotive electronics including engine control, body modules, and ADAS sensor interfaces |
| Sub-nanosecond response time | Clamps transients before sensitive ICs experience overstress - critical for protecting 3.3 V/5 V logic and gate drivers |
| Low incremental surge resistance | Minimizes VC overshoot during high di/dt events, improving protection margin for MOSFETs and microcontrollers |
Applications
| Automotive Power Rail Protection | Industrial PLC Digital Input Protection |
|---|---|
Use Scenario: Protecting 12 V battery-fed ECU power inputs against load dump (ISO 16750-2) and alternator ripple. IC Role / Device Role / Timing Role: Primary clamping element placed between VBAT and GND, conducting surge energy away from LDOs and MCU power pins. Use Value: Clamps 30.6 V at 49 A, limiting stress on 36 V-rated input capacitors and enabling use of cost-effective 35 V-rated downstream components. |
Use Scenario: Safeguarding 24 V digital input channels in programmable logic controllers exposed to field-wiring transients. IC Role / Device Role / Timing Role: Unidirectional shunt protector mounted at connector entry, absorbing inductive kickback from solenoid/valve switching. Use Value: Sub-ns response prevents latch-up in optocoupler input stages; 175 °C rating supports operation in sealed enclosures with ambient >85 °C. |
| Telecom DC Power Feeds | Consumer Appliance Motor Drive Protection |
Use Scenario: Shielding -48 V DC power distribution in base station cabinets from lightning-induced surges on long cable runs. IC Role / Device Role / Timing Role: First-stage TVS on power entry board, coordinated with upstream MOVs and downstream π-filters. Use Value: 1500 W rating allows single-device handling of 10/1000 µs surges up to 4 kV (line-to-ground), reducing BOM count vs. stacked TVS arrays. |
Use Scenario: Suppressing commutation spikes on brushed motor supply lines in washing machines and HVAC blowers. IC Role / Device Role / Timing Role: Reverse-biased across motor terminals to clamp flyback voltage during PWM switching. Use Value: 200 A IFSM withstands repeated 100 A startup surges; RoHS-compliant HE3 suffix meets global appliance regulatory 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 | DO-214AA package (SMB), 22 V VBR, 33.2 V VC @ 45.2 A, 600 W PPPM | Lower power rating; surface-mount only; not AEC-Q101 qualified in standard grade | Select when board space is constrained and surge energy is ≤600 W; requires rework for through-hole legacy designs. |
| 1.5KE22A-E3/54 | Same 1.5KE package and electrical specs, but commercial-grade (non-AEC-Q101); identical VBR, VC, PPPM | Lacks automotive qualification; suitable for industrial/commercial use only | Choose for cost-sensitive non-automotive applications where AEC-Q101 is not mandated; same footprint and solder process. |
Compared with 1.5KE22CHE3/73, SMBJ22A offers smaller size but sacrifices 60% peak power and automotive qualification; 1.5KE22A-E3/54 matches all electrical and mechanical attributes but omits AEC-Q101 validation - making it viable only where automotive reliability testing is unnecessary.
Availability
1.5KE22CHE3/73 is available at Aetrix Electronics and suitable for automotive ECU design, industrial PLC development, and telecom power system integration requiring stable component supply, long-lifecycle support, and traceable AEC-Q101 qualified parts.
Supply support for 1.5KE22CHE3/73 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 series was engineered for high-energy transient suppression in harsh environments - targeting automotive, industrial, and telecom infrastructure where failure due to voltage surges must be eliminated.
FAQ
What is the breakdown voltage tolerance for 1.5KE22CHE3/73?
The 1.5KE22CHE3/73 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 tolerance ensures consistent clamping behavior across production lots and supports precise coordination with downstream overvoltage protection circuits in designs such as automotive power management ICs.
Is 1.5KE22CHE3/73 suitable for bidirectional transient protection?
No, 1.5KE22CHE3/73 is a unidirectional TVS diode - its cathode band indicates polarity, and it conducts only in reverse bias. For bidirectional protection, Vishay offers the 1.5KE22CA variant. Using 1.5KE22CHE3/73 in AC-coupled or floating signal paths would require external circuitry (e.g., back-to-back configuration), which is not recommended due to increased complexity and reduced reliability versus a native bidirectional part.
Does 1.5KE22CHE3/73 meet AEC-Q101 requirements?
Yes, the "HE3" suffix in 1.5KE22CHE3/73 explicitly denotes AEC-Q101 qualification per Vishay's ordering nomenclature. This includes stress testing for temperature cycling, humidity bias, mechanical shock, and high-temperature operating life - validating suitability for automotive powertrain, chassis, and body electronics where component failure is unacceptable.
What is the maximum clamping voltage of 1.5KE22CHE3/73 under surge conditions?
The maximum clamping voltage (VC) of 1.5KE22CHE3/73 is 30.6 V when subjected to its rated peak pulse current of 49.0 A using the standard 10/1000 µs waveform. This value is measured at the device terminals and represents the upper limit of voltage imposed on protected circuitry during worst-case surge events - a key parameter for ensuring compatibility with 3.3 V, 5 V, and 24 V system voltage rails.
Can 1.5KE22CHE3/73 be used in parallel for higher surge current handling?
Vishay does not recommend paralleling multiple 1.5KE22CHE3/73 units without external balancing components, as minor VBR mismatches can cause uneven current sharing and premature failure of one device. For higher surge capability, select a higher-power TVS (e.g., 3KP22A) or implement staged protection with upstream MOVs and downstream low-capacitance TVS arrays - both validated approaches per Vishay application note AN1003.
1.5KE22CHE3/73 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:
- -
- Bidirectional Channels:
- 1
- 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:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 175°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Through Hole
- Supplier Device Package:
- 1.5KE
1.5KE22CHE3/73 FAQ
1.How can I place an order for 1.5KE22CHE3/73 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5KE22CHE3/73 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 1.5KE22CHE3/73 reliable?
The price and inventory of 1.5KE22CHE3/73 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5KE22CHE3/73 is usually 5 days.
3.What payment methods are accepted for 1.5KE22CHE3/73?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5KE22CHE3/73 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5KE22CHE3/73?
1.5KE22CHE3/73 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5KE22CHE3/73 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 1.5KE22CHE3/73?
For technical support, including 1.5KE22CHE3/73 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5KE22CHE3/73 requirements.
6.How does Aetrix verify that 1.5KE22CHE3/73 is sourced from the original manufacturer or authorized distributors?
All 1.5KE22CHE3/73 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 1.5KE22CHE3/73 meets industry standards.
7.What is the process for return or replacement of 1.5KE22CHE3/73?
All 1.5KE22CHE3/73 units undergo pre-shipment inspection (PSI). If there is an issue with 1.5KE22CHE3/73, 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 1.5KE22CHE3/73 part is unused and in its original packaging.
Return procedure for 1.5KE22CHE3/73:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5KE22CHE3/73 Tags
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