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Vishay General Semiconductor - Diodes Division 1.5KE22CAHE3_A/C
- Part No.:
- 1.5KE22CAHE3_A/C
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-201AA, DO-27, Axial
- Datasheet:
-
1.5KE22CAHE3_A/C.pdf
- Description:
- TVS DIODE 18.8VWM 30.6VC 1.5KE
- Quantity:
- Payment:
- Shipping:
Inventory:6,917
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Product details
Overview
1.5KE22CAHE3_A/C from Vishay General Semiconductor is a bidirectional Transient Voltage Suppressor (TVS) diode designed for robust overvoltage protection in power 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 transients and inductive switching surges in automotive and industrial systems.
For engineers reviewing the 1.5KE22CAHE3_A/C datasheet, 1.5KE22CAHE3_A/C pinout, 1.5KE22CAHE3_A/C application, or 1.5KE22CAHE3_A/C equivalent, this page delivers verified electrical parameters, JEDEC 1.5KE package details, AEC-Q101 qualification status, clamping performance curves, and real-world protection use cases - all confirmed from Vishay's official 88301 document revision 09-Aug-2022.
Technical Context
This device implements a glass-passivated silicon junction optimized for bidirectional transient suppression. Its clamping action responds in <1 ns, with low incremental surge resistance enabling effective energy diversion during 10/1000 µs waveform events. The 1.5KE22CAHE3_A/C maintains stable VBR over temperature with a coefficient of 0.092 %/°C and supports repetitive surge duty cycles up to 0.01 %.
It is rated for 1500 W peak pulse power and 6.5 W steady-state dissipation on an infinite heatsink at TL = 75 °C. With no polarity marking and symmetric I-V characteristics, it protects AC-coupled or floating lines without requiring orientation verification during placement.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 20.9 V / 23.1 V at 1 mA - defines precise voltage threshold where clamping initiates under controlled test conditions |
| VWM | 18.8 V - maximum continuous reverse working voltage before leakage exceeds 1 µA, ensuring safe operation below clamping onset |
| VC @ IPPM | 30.6 V at 49 A - clamped voltage during full 1500 W transient, directly limiting stress on downstream components |
| PPPM | 1500 W - peak pulse power handling per 10/1000 µs waveform, defining surge energy absorption capability |
| TJ max. | +175 °C - maximum junction temperature rating, supporting high-ambient deployments in engine compartments or industrial enclosures |
| Package | JEDEC 1.5KE case - axial-leaded, molded epoxy body meeting UL 94 V-0, with matte tin-plated leads compliant to J-STD-002 |
| Qualification | AEC-Q101 qualified - validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing |
Pinout & Package
1.5KE22CAHE3_A/C uses a two-terminal axial-leaded package (JEDEC Case Style 1.5KE) with no polarity marking - consistent with its bidirectional function. Leads are matte tin-plated and solderable per J-STD-002 and JESD 22-B102. The molded epoxy body meets UL 94 V-0 flammability rating.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (symmetrical) | Bidirectional transient conduction path | Either terminal serves as anode or cathode depending on instantaneous polarity - enables AC line or floating node protection without orientation dependency |
| Leads (anode & cathode) | Thermal and electrical interface | Provide mechanical mounting, heat conduction to PCB copper, and low-inductance connection to protected circuit nodes |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Ensures stable, repeatable VBR and long-term reliability under thermal cycling and humidity exposure |
| 1500 W peak pulse power (10/1000 µs) | Handles high-energy transients common in automotive load-dump or industrial motor-switching events |
| Clamping response time <1 ns | Engages before sensitive ICs experience damaging overvoltage - critical for protecting fast logic and analog front-ends |
| AEC-Q101 qualification | Validates suitability for automotive applications including powertrain, body electronics, and ADAS sensor interfaces |
| UL 94 V-0 molding compound | Provides flame-retardant housing essential for safety-critical and enclosed system designs |
Applications
| Automotive Power Line Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting 12 V battery-fed ECUs from load-dump transients (ISO 7637-2 Pulse 5a) and alternator ripple. IC Role / Device Role / Timing Role: Bidirectional shunt clamp placed across power input to divert surge current away from LDOs, microcontrollers, and CAN transceivers. Use Value: Limits voltage to ≤30.6 V during 49 A transients, preventing latch-up or gate oxide damage in downstream semiconductors. |
Use Scenario: Safeguarding 4–20 mA current-loop sensors and RS-485 fieldbus nodes in factory automation cabinets exposed to relay switching noise. IC Role / Device Role / Timing Role: TVS placed differential-mode across signal pair to suppress common-mode surges induced by nearby contactor actuation. Use Value: Symmetric clamping ensures equal protection for both signal polarities without biasing concerns, preserving analog accuracy. |
| Consumer Audio Equipment Surge Guard | Telecom DSL Line Protection |
Use Scenario: Shielding speaker amplifier outputs and headphone jacks in AV receivers from ESD and cable-borne transients. IC Role / Device Role / Timing Role: Low-capacitance bidirectional TVS installed at board edge connectors to absorb human-body-model (HBM) and machine-model (MM) discharges. Use Value: Sub-ns response prevents audio IC latch-up while maintaining signal integrity due to absence of DC bias requirements. |
Use Scenario: Protecting ADSL/VDSL line drivers and SLIC circuits from lightning-induced surges on outdoor copper pairs per ITU-T K.20/K.21. IC Role / Device Role / Timing Role: Primary-level TVS mounted at DSL port entry point, coordinated with gas discharge tube (GDT) secondary protection. Use Value: 18.8 V VWM allows normal line signaling while clamping >30 V transients - compatible with ±12 V analog swing and 100 V AC ringing. |
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 | Smaller SMB package (3.5 mm × 4.6 mm), lower 600 W PPPM, same 22 V VBR range and bidirectional configuration | Preferred for space-constrained PCBs; not rated for AEC-Q101; thermal dissipation limited by smaller footprint | Select when board area is constrained and surge energy remains ≤600 W; verify layout thermal relief for sustained power |
| 1.5KE22AHE3_A/C | Unidirectional variant with cathode band marking; identical VBR, VC, and PPPM, but asymmetric conduction | Required only for DC-biased lines where reverse conduction must be blocked; adds polarity sensitivity during assembly | Choose only if circuit topology mandates unidirectional blocking - otherwise 1.5KE22CAHE3_A/C offers simpler placement and AC compatibility |
Compared with SMBJ22CA, the 1.5KE22CAHE3_A/C delivers 2.5× higher surge power handling and automotive qualification, while compared with 1.5KE22AHE3_A/C, it eliminates polarity-dependent layout constraints and supports true bidirectional signal paths without redesign.
Availability
1.5KE22CAHE3_A/C is available at Aetrix Electronics and suitable for automotive ECU protection, industrial sensor interface hardening, telecom line surge suppression, and consumer audio equipment requiring stable component supply across extended temperature ranges and multi-year production cycles.
Supply support for 1.5KE22CAHE3_A/C 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, efficiency, and application-specific optimization.
The 1.5KE series was engineered for high-energy transient suppression in harsh environments - targeting automotive, industrial, and telecom infrastructure where failure modes demand proven surge resilience and long-term parametric stability.
FAQ
What is the breakdown voltage tolerance for 1.5KE22CAHE3_A/C?
The 1.5KE22CAHE3_A/C has a specified breakdown voltage range of 20.9 V to 23.1 V at 1 mA test current, representing ±5 % tolerance around the nominal 22 V rating. This tight VBR window ensures predictable clamping onset across production lots and temperature extremes, as confirmed in Vishay document 88301, Table on page 2.
Is 1.5KE22CAHE3_A/C RoHS compliant and lead-free?
Yes, the "E3" suffix in 1.5KE22CAHE3_A/C indicates full RoHS compliance per EU Directive 2011/65/EU, with matte tin-plated leads and lead-free solderability verified per J-STD-002. The "HE3" variant further adds JESD 201 Class 2 whisker resistance, making 1.5KE22CAHE3_A/C suitable for high-reliability commercial and automotive applications.
Does 1.5KE22CAHE3_A/C require a heatsink for 1500 W pulse handling?
No - the 1500 W rating applies to single non-repetitive 10/1000 µs pulses; thermal mass of the axial leads and PCB copper provides sufficient transient heat sinking. However, for repetitive surges or elevated ambient temperatures, derating per Figure 2 in Vishay 88301 is required, and steady-state power dissipation is limited to 6.5 W on an infinite heatsink at TL = 75 °C.
How does the clamping voltage of 1.5KE22CAHE3_A/C compare to its breakdown voltage?
At its rated peak pulse current of 49 A, the 1.5KE22CAHE3_A/C clamps to 30.6 V - a 33 % overvoltage above its minimum VBR of 20.9 V. This incremental clamping voltage (ΔVC = 9.7 V) reflects low dynamic impedance, enabling effective energy shunting while holding protected nodes within safe operating limits of 3.3 V or 5 V ICs.
Can 1.5KE22CAHE3_A/C be used in place of unidirectional 1.5KE22AHE3_A/C?
Yes - the 1.5KE22CAHE3_A/C is electrically compatible in most unidirectional applications, offering identical VBR, VC, and PPPM. Its bidirectional symmetry eliminates cathode orientation checks during assembly and supports AC-coupled or floating nodes. However, it cannot block reverse DC current like the unidirectional version, so DC bias conditions must be verified.
1.5KE22CAHE3_A/C 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:
- -
- 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:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 175°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Through Hole
- Supplier Device Package:
- 1.5KE
1.5KE22CAHE3_A/C FAQ
1.How can I place an order for 1.5KE22CAHE3_A/C through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5KE22CAHE3_A/C 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 1.5KE22CAHE3_A/C reliable?
The price and inventory of 1.5KE22CAHE3_A/C are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5KE22CAHE3_A/C is usually 5 days.
3.What payment methods are accepted for 1.5KE22CAHE3_A/C?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5KE22CAHE3_A/C transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5KE22CAHE3_A/C?
1.5KE22CAHE3_A/C orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5KE22CAHE3_A/C 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 1.5KE22CAHE3_A/C?
For technical support, including 1.5KE22CAHE3_A/C datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5KE22CAHE3_A/C requirements.
6.How does Aetrix verify that 1.5KE22CAHE3_A/C is sourced from the original manufacturer or authorized distributors?
All 1.5KE22CAHE3_A/C 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 1.5KE22CAHE3_A/C meets industry standards.
7.What is the process for return or replacement of 1.5KE22CAHE3_A/C?
All 1.5KE22CAHE3_A/C units undergo pre-shipment inspection (PSI). If there is an issue with 1.5KE22CAHE3_A/C, 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 1.5KE22CAHE3_A/C part is unused and in its original packaging.
Return procedure for 1.5KE22CAHE3_A/C:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5KE22CAHE3_A/C 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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D12V0L1B2LP-7B
Diodes Incorporated
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Nexperia USA Inc.
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Toshiba Semiconductor and Storage
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Diodes Incorporated
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