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Vishay General Semiconductor - Diodes Division 1.5KE47CAHE3_A/D
- Part No.:
- 1.5KE47CAHE3_A/D
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-201AA, DO-27, Axial
- Datasheet:
-
1.5KE47CAHE3_A/D.pdf
- Description:
- TVS DIODE 40.2VWM 64.8VC 1.5KE
- Quantity:
- Payment:
- Shipping:
Inventory:2,751
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Product details
Overview
1.5KE47CAHE3_A/D 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 47 V breakdown voltage (VBR = 44.7–49.4 V at 1.0 mA), 1500 W peak pulse power (10/1000 µs), clamping voltage of 64.8 V at 23.1 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 in automotive and industrial systems.
For engineers reviewing the 1.5KE47CAHE3_A/D datasheet, 1.5KE47CAHE3_A/D pinout, 1.5KE47CAHE3_A/D application, or 1.5KE47CAHE3_A/D equivalent, this page delivers verified electrical parameters, AEC-Q101 qualification status, thermal resistance (RθJL = 15.4 °C/W), RoHS-compliant HE3 packaging, and real-world clamping behavior under standardized surge waveforms.
Technical Context
This bidirectional TVS diode employs a glass-passivated silicon junction optimized for sub-nanosecond response (<1 ns) and low incremental surge resistance. Its symmetrical clamping characteristic ensures identical forward and reverse protection thresholds, enabling direct placement across AC-coupled or differential signal lines without polarity concerns.
It is rated for 1500 W peak pulse power with a 10/1000 µs waveform at 0.01% duty cycle, and derates linearly above 25 °C ambient per JEDEC curves. The device meets UL 94 V-0 flammability requirements and supports soldering up to 275 °C for 10 s per JESD 22-B106.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 44.7 V / 49.4 V at 1.0 mA - defines precise clamping onset threshold for bidirectional surge suppression |
| VWM | 40.2 V - maximum continuous working voltage before leakage exceeds 1.0 µA |
| VC @ IPPM | 64.8 V at 23.1 A - actual clamped voltage during 1500 W transient, limiting downstream stress |
| PPPM | 1500 W - peak surge handling capacity using standard 10/1000 µs waveform |
| TJ max. | +175 °C - enables operation in under-hood automotive and high-temperature industrial environments |
| RθJL | 15.4 °C/W - low junction-to-lead thermal resistance supports reliable power dissipation without heatsink |
| AEC-Q101 | Qualified - validated for automotive-grade reliability including temperature cycling, HTRB, and ESD |
Pinout & Package
Package: Case Style 1.5KE - molded epoxy body with matte tin-plated leads; meets UL 94 V-0; lead length 0.375" (9.5 mm); RoHS-compliant and AEC-Q101 qualified (HE3 suffix).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (bidirectional) | AC-coupled surge path | No polarity marking; symmetric terminals allow placement across any two-point voltage node without orientation check |
| Lead 1 / Lead 2 | Current conduction path | Both leads serve as interchangeable surge current entry/exit points; no functional distinction in bidirectional mode |
Key Features
| Feature | Design Value |
|---|---|
| Glass passivated junction | Ensures stable VBR tolerance and long-term reliability under repeated surge stress |
| 1500 W peak pulse power (10/1000 µs) | Protects against severe transients such as ISO 7637-2 Pulse 5a (load dump) and IEC 61000-4-5 Combination Wave |
| Sub-nanosecond response time | Clamps within <1 ns - faster than MOVs or GDTs, preserving integrity of high-speed digital and analog circuits |
| AEC-Q101 qualification | Validated for automotive electronics including engine control units, ADAS sensors, and infotainment power rails |
| Low clamping ratio (VC/VBR ≈ 1.45) | Minimizes overvoltage overshoot during clamping, reducing risk of secondary failure in protected ICs |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Installed across 12 V battery rail in engine control modules to suppress load dump transients up to 120 V. IC Role / Device Role / Timing Role: Bidirectional TVS clamping element placed upstream of DC/DC converters and microcontrollers. Use Value: Limits rail voltage to ≤64.8 V during 23.1 A surge, preventing latch-up or gate oxide damage in downstream SiC MOSFET drivers. |
Use Scenario: Mounted on RS-485 transceiver PCBs in factory automation PLCs exposed to motor drive noise. IC Role / Device Role / Timing Role: Differential-line protector between isolated bus transceivers and field wiring harnesses. Use Value: Clamps common-mode surges induced by nearby VFD switching, maintaining signal integrity below 64.8 V while preserving 25 kV ESD immunity. |
| Telecom Line Surge Protection | Consumer Appliance Motor Control |
Use Scenario: Applied to DSL line interface cards in central office equipment subjected to lightning-induced longitudinal surges. IC Role / Device Role / Timing Role: Primary protection device bridging tip/ring lines before hybrid transformer and codec ICs. Use Value: Absorbs 1500 W energy from 10/1000 µs surges per ITU-T K.20, enabling compliance with GR-1089-CORE Level 3 requirements. |
Use Scenario: Placed across brushless DC motor phase windings in smart HVAC blowers to suppress commutation spikes. IC Role / Device Role / Timing Role: Snubber-style clamp protecting gate drivers and current-sense amplifiers from inductive kickback. Use Value: Limits voltage reversal to ≤64.8 V during 23.1 A turn-off events, extending lifetime of 600 V half-bridge drivers and reducing EMI emissions. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ45CA | Lower peak power (600 W), smaller SMB package (vs. DO-201AB), VC = 73.5 V @ 8.2 A | Better suited for space-constrained consumer electronics; insufficient for automotive load dump per ISO 7637-2 | Select only when board area is critical and surge energy remains ≤600 W |
| 1.5SMC47CA | Same 1500 W rating and 47 V VBR, but SMC package (smaller footprint, higher RθJA = 110 °C/W) | Higher thermal resistance limits sustained surge repetition rate; not AEC-Q101 qualified | Use where cost or size drives selection and automotive qualification is not required |
Compared with 1.5KE47CAHE3_A/D, SMBJ45CA trades surge capacity for compactness, while 1.5SMC47CA matches power but lacks automotive qualification and thermal performance-making 1.5KE47CAHE3_A/D the optimal choice for high-reliability, high-energy, and thermally demanding deployments.
Availability
1.5KE47CAHE3_A/D is available at Aetrix Electronics and suitable for automotive power rail protection, industrial sensor interface hardening, telecom line surge suppression, and consumer appliance motor control requiring stable component supply and full traceability.
Supply support for 1.5KE47CAHE3_A/D 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 designs and manufactures discrete semiconductors including diodes, rectifiers, and TVS devices, with emphasis on high-reliability, high-power, and automotive-qualified components.
The 1.5KE family was developed specifically for high-energy transient suppression in harsh environments, targeting automotive, industrial, and telecom infrastructure applications where robustness and repeatable clamping performance are mandatory.
FAQ
What is the breakdown voltage tolerance for 1.5KE47CAHE3_A/D?
The 1.5KE47CAHE3_A/D has a specified breakdown voltage range of 44.7 V to 49.4 V at 1.0 mA test current, corresponding to ±5% tolerance around the nominal 47 V rating. This tight VBR window ensures predictable clamping onset and consistent protection behavior across production lots and temperature ranges from –55 °C to +175 °C.
Is 1.5KE47CAHE3_A/D AEC-Q101 qualified?
Yes, 1.5KE47CAHE3_A/D is AEC-Q101 qualified per Vishay documentation (Document Number 88301, Revision 09-Aug-2022). The HE3 suffix explicitly denotes AEC-Q101 qualification, covering stress tests including high-temperature reverse bias, temperature cycling, and ESD. This makes 1.5KE47CAHE3_A/D suitable for automotive powertrain and chassis applications.
What is the clamping voltage of 1.5KE47CAHE3_A/D at its rated peak pulse current?
The 1.5KE47CAHE3_A/D clamps to a maximum of 64.8 V at its rated peak pulse current of 23.1 A (10/1000 µs waveform). This value is measured under standardized conditions and reflects the actual voltage seen by protected circuitry during worst-case surge events, confirming effective suppression below critical IC damage thresholds.
Can 1.5KE47CAHE3_A/D be used in unidirectional configurations?
No, 1.5KE47CAHE3_A/D is strictly a bidirectional TVS diode, indicated by the "CA" suffix. It provides symmetrical clamping in both polarities and has no cathode marking. For unidirectional operation, engineers must select a part with "A" suffix (e.g., 1.5KE47A), which includes a defined cathode band and asymmetric forward/reverse characteristics.
What is the thermal resistance from junction to lead (RθJL) for 1.5KE47CAHE3_A/D?
The 1.5KE47CAHE3_A/D has a typical junction-to-lead thermal resistance (RθJL) of 15.4 °C/W, measured with 0.375" (9.5 mm) lead length. This low value enables efficient heat transfer from the silicon die to PCB copper or chassis, supporting reliable 1500 W surge handling without external heatsinking in most mounting configurations.
1.5KE47CAHE3_A/D 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):
- 40.2V
- Voltage - Breakdown (Min):
- 44.7V
- Voltage - Clamping (Max) @ Ipp:
- 64.8V
- Current - Peak Pulse (10/1000µs):
- 23.1A
- 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
1.5KE47CAHE3_A/D FAQ
1.How can I place an order for 1.5KE47CAHE3_A/D through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5KE47CAHE3_A/D 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 1.5KE47CAHE3_A/D reliable?
The price and inventory of 1.5KE47CAHE3_A/D are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5KE47CAHE3_A/D is usually 5 days.
3.What payment methods are accepted for 1.5KE47CAHE3_A/D?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5KE47CAHE3_A/D transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5KE47CAHE3_A/D?
1.5KE47CAHE3_A/D orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5KE47CAHE3_A/D 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 1.5KE47CAHE3_A/D?
For technical support, including 1.5KE47CAHE3_A/D datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5KE47CAHE3_A/D requirements.
6.How does Aetrix verify that 1.5KE47CAHE3_A/D is sourced from the original manufacturer or authorized distributors?
All 1.5KE47CAHE3_A/D 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 1.5KE47CAHE3_A/D meets industry standards.
7.What is the process for return or replacement of 1.5KE47CAHE3_A/D?
All 1.5KE47CAHE3_A/D units undergo pre-shipment inspection (PSI). If there is an issue with 1.5KE47CAHE3_A/D, 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 1.5KE47CAHE3_A/D part is unused and in its original packaging.
Return procedure for 1.5KE47CAHE3_A/D:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5KE47CAHE3_A/D Tags
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