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Vishay General Semiconductor - Diodes Division 1.5KE20CAHE3_B/C
- Part No.:
- 1.5KE20CAHE3_B/C
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-201AA, DO-27, Axial
- Datasheet:
-
1.5KE20CAHE3_B/C.pdf
- Description:
- 1.5KW,20V 5%,BIDIR,AXIAL TVS
- Quantity:
- Payment:
- Shipping:
Inventory:2,494
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Product details
Overview
1.5KE20CAHE3_B/C from Vishay General Semiconductor is a bidirectional Transient Voltage Suppressor (TVS) diode designed for robust overvoltage protection in DC power rails and signal lines. It features a 20 V breakdown voltage (VBR = 19.0–21.0 V at 1.0 mA), 1500 W peak pulse power (10/1000 µs), clamping voltage of 27.7 V at 54.2 A, and operates across –55 °C to +175 °C junction temperature. It is used in automotive sensor interfaces and industrial I/O protection where fast-response surge suppression is critical.
For engineers reviewing the 1.5KE20CAHE3_B/C datasheet, 1.5KE20CAHE3_B/C pinout, 1.5KE20CAHE3_B/C application, or 1.5KE20CAHE3_B/C equivalent, this page delivers verified electrical parameters, JEDEC 1.5KE package details, AEC-Q101 qualification status, bidirectional clamping behavior, and real-world use cases in ESD- and lightning-transient-prone systems.
Technical Context
This device implements a glass-passivated silicon p-n junction optimized for transient suppression with sub-nanosecond response time (<1 ns). Its bidirectional structure enables symmetrical clamping in AC-coupled or floating circuits without polarity constraints, and its low incremental surge resistance ensures stable voltage limiting under high-current transients.
The 1.5KE20CAHE3_B/C complies with JEDEC case style 1.5KE, uses matte tin-plated leads per J-STD-002, and meets JESD 201 class 2 whisker resistance. It is RoHS-compliant and AEC-Q101 qualified - confirmed for 1.5KE6.8CAHE3_B through 1.5KE220CAHE3_B variants per Document 88301, Revision 09-Aug-2022.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 19.0 V / 21.0 V at 1.0 mA - defines precise clamping onset threshold for bidirectional surge events |
| VWM | 17.1 V - maximum continuous working voltage before leakage exceeds 1.0 µA |
| VC @ IPPM | 27.7 V at 54.2 A - actual clamped voltage during 1500 W transient, critical for downstream IC survivability |
| PPPM | 1500 W (10/1000 µs waveform) - peak surge handling capacity for lightning/inductive-switching threats |
| Junction Temp Range | –55 °C to +175 °C - supports under-hood automotive and industrial ambient environments |
| AEC-Q101 Qualified | Yes - validated for automotive electronics per stress test requirements including HTOL, TCT, and ESD |
| Package | JEDEC 1.5KE - axial-leaded, epoxy-molded case with UL 94 V-0 flammability rating |
Pinout & Package
JEDEC 1.5KE package: axial-leaded, molded epoxy body (UL 94 V-0), 0.375" (9.5 mm) lead length, 0.042" (1.07 mm) lead diameter. Bidirectional construction means no polarity marking; both terminals are functionally identical.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (symmetrical) | Transient current path | Both terminals conduct identically during positive or negative surges - no orientation required in PCB layout |
| Leads (matte tin plated) | Thermal and electrical interface | Solderable per J-STD-002; thermal resistance RθJL = 15.4 °C/W enables effective heat transfer to PCB copper |
Key Features
| Feature | Design Value |
|---|---|
| Glass passivated junction | Enables stable VBR tolerance (±5%) and long-term reliability under thermal cycling |
| 1500 W peak pulse power | Withstands IEC 61000-4-5 Level 4 (4 kV) surges on 50 Ω source impedance without degradation |
| Sub-nanosecond response | Clamps within <1 ns - faster than MOVs or polymer-based protectors, preserving signal integrity |
| AEC-Q101 qualification | Validated for automotive Grade 0/1 applications including engine control modules and ADAS sensor interfaces |
| Low clamping ratio (VC/VBR ≈ 1.39) | Minimizes let-through voltage to protect 24 V-rated ICs such as CAN transceivers and microcontrollers |
Applications
| Automotive Sensor Protection | Industrial PLC I/O Protection |
|---|---|
Use Scenario: Protecting analog sensor outputs (e.g., pressure, temperature) in engine bay environments exposed to load dump and ISO 7637-2 pulses. IC Role / Device Role: Primary overvoltage clamp placed directly at connector entry point before signal conditioning circuitry. Use Value: Limits transients to ≤27.7 V, ensuring survival of 30 V max-rated op-amps and ADC inputs while maintaining AEC-Q101 compliance. | Use Scenario: Safeguarding 24 V digital input channels in programmable logic controllers subjected to inductive kickback from solenoid switching. IC Role / Device Role: Bidirectional shunt protector across input terminals to divert surge energy to ground or supply rail. Use Value: Clamps 10/1000 µs transients up to 54.2 A without latch-up, enabling reliable operation in factory automation with minimal maintenance. |
| Telecom Line Interface | Consumer Power Adapter Input |
Use Scenario: Secondary-side surge protection on RS-485 or CAN bus lines in outdoor telecom equipment vulnerable to induced lightning. IC Role / Device Role: Bidirectional TVS placed differential-mode across twisted-pair lines, referenced to local ground. Use Value: Symmetrical clamping preserves common-mode rejection while meeting IEC 61000-4-5 surge immunity requirements up to 2 kV. | Use Scenario: Input-stage protection in wall-mounted AC/DC adapters for smart home devices exposed to mains-borne surges. IC Role / Device Role: First-line defense after bridge rectifier, clamping line-to-line and line-to-ground transients. Use Value: Withstands repetitive 1500 W pulses at 0.01% duty cycle, extending adapter lifetime in regions with unstable grid conditions. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ20CA | DO-214AA package, lower PPPM = 600 W, same VBR range (19.0–21.0 V), surface-mount | Used where board space is constrained and reflow assembly is preferred over axial through-hole | Select SMBJ20CA when footprint reduction and automated assembly outweigh need for 1500 W surge margin. |
| 1.5KE20CAHE3_A | Same electrical specs and package, but revision A instead of B/C; identical AEC-Q101 qualification and thermal performance | No functional difference - only minor process or traceability update per Vishay revision policy | 1.5KE20CAHE3_A is fully interchangeable with 1.5KE20CAHE3_B/C in all designs; B/C denotes updated wafer lot or packaging batch. |
Compared with SMBJ20CA, the 1.5KE20CAHE3_B/C delivers 2.5× higher peak pulse power and superior thermal dissipation via axial leads, making it preferable for high-energy industrial transients; versus 1.5KE20CAHE3_A, it offers identical protection performance with enhanced traceability and updated manufacturing controls.
Availability
1.5KE20CAHE3_B/C is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial PLC I/O protection, telecom line interfaces, and consumer power adapter input stages requiring stable component supply and AEC-Q101 assurance.
Supply support for 1.5KE20CAHE3_B/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, MOSFETs, optoelectronics, and passive components with emphasis on reliability and automotive-grade validation.
The 1.5KE series was engineered specifically for high-energy transient suppression in harsh environments, targeting applications demanding >1000 W surge capability, extended temperature operation, and AEC-Q101 compliance - especially in transportation and industrial control systems.
FAQ
What is the breakdown voltage tolerance for 1.5KE20CAHE3_B/C?
The 1.5KE20CAHE3_B/C has a guaranteed breakdown voltage range of 19.0 V to 21.0 V at 1.0 mA test current, corresponding to ±5% tolerance around the nominal 20 V rating. This tight VBR window ensures predictable clamping onset across production lots and supports precise system-level surge margin analysis in designs using the 1.5KE20CAHE3_B/C.
Is 1.5KE20CAHE3_B/C suitable for automotive applications?
Yes, the 1.5KE20CAHE3_B/C is AEC-Q101 qualified per Vishay Document 88301, explicitly listed for variants 1.5KE6.8CAHE3_B through 1.5KE220CAHE3_B. Its –55 °C to +175 °C operating range, glass-passivated junction, and validated stress-test performance make it appropriate for under-hood ECUs, body control modules, and ADAS sensor interfaces where the 1.5KE20CAHE3_B/C provides certified transient protection.
How does the bidirectional design of 1.5KE20CAHE3_B/C affect PCB layout?
The 1.5KE20CAHE3_B/C has no polarity marking and functions identically in both directions, eliminating orientation constraints during placement. Engineers can mount the 1.5KE20CAHE3_B/C without regard to anode/cathode alignment - simplifying layout, reducing assembly errors, and enabling symmetric placement across differential lines or floating supplies where polarity reversal may occur during transients.
What is the clamping voltage of 1.5KE20CAHE3_B/C at its rated peak pulse current?
At its rated peak pulse current of 54.2 A (corresponding to 1500 W with a 10/1000 µs waveform), the 1.5KE20CAHE3_B/C clamps to a maximum of 27.7 V. This value is measured per standard test conditions and defines the upper voltage limit imposed on protected circuitry during worst-case surge events, directly informing safe operating margins for downstream 24 V-rated components.
Does 1.5KE20CAHE3_B/C require a heatsink for standard operation?
No, the 1.5KE20CAHE3_B/C is designed for self-contained operation without external heatsinking under typical surge conditions. Its thermal resistance from junction to lead (RθJL = 15.4 °C/W) allows adequate heat dissipation through PCB copper pours and lead traces. Heatsinking is unnecessary unless subjected to repetitive high-duty-cycle surges exceeding 0.01%, which is outside the device's specified operating envelope for the 1.5KE20CAHE3_B/C.
1.5KE20CAHE3_B/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:
- Active
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 17.1V
- Voltage - Breakdown (Min):
- 19V
- Voltage - Clamping (Max) @ Ipp:
- 27.7V
- Current - Peak Pulse (10/1000µs):
- 56A
- Power - Peak Pulse:
- 1500W (1.5kW)
- Power Line Protection:
- No
- Applications:
- Telecom
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 175°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Through Hole
- Supplier Device Package:
- 1.5KE
1.5KE20CAHE3_B/C FAQ
1.How can I place an order for 1.5KE20CAHE3_B/C through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5KE20CAHE3_B/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 1.5KE20CAHE3_B/C reliable?
The price and inventory of 1.5KE20CAHE3_B/C are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5KE20CAHE3_B/C is usually 5 days.
3.What payment methods are accepted for 1.5KE20CAHE3_B/C?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5KE20CAHE3_B/C transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5KE20CAHE3_B/C?
1.5KE20CAHE3_B/C orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5KE20CAHE3_B/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 1.5KE20CAHE3_B/C?
For technical support, including 1.5KE20CAHE3_B/C datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5KE20CAHE3_B/C requirements.
6.How does Aetrix verify that 1.5KE20CAHE3_B/C is sourced from the original manufacturer or authorized distributors?
All 1.5KE20CAHE3_B/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 1.5KE20CAHE3_B/C meets industry standards.
7.What is the process for return or replacement of 1.5KE20CAHE3_B/C?
All 1.5KE20CAHE3_B/C units undergo pre-shipment inspection (PSI). If there is an issue with 1.5KE20CAHE3_B/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 1.5KE20CAHE3_B/C part is unused and in its original packaging.
Return procedure for 1.5KE20CAHE3_B/C:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5KE20CAHE3_B/C Tags
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ESD9B5.0ST5G
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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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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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