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Vishay General Semiconductor - Diodes Division 1.5KE47CAHE3_B/D
- Part No.:
- 1.5KE47CAHE3_B/D
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-201AA, DO-27, Axial
- Datasheet:
-
1.5KE47CAHE3_B/D.pdf
- Description:
- 1.5KW,47V 5%,BIDIR,AXIAL TVS
- Quantity:
- Payment:
- Shipping:
Inventory:8,933
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Product details
Overview
1.5KE47CAHE3_B/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), 1500 W peak pulse power (10/1000 µs), clamping voltage of 64.8 V at 23.1 A, 1.0 µA max reverse leakage at 40.2 V, and operates from –55 °C to +175 °C - deployed in automotive sensor interfaces and industrial I/O protection.
For engineers reviewing the 1.5KE47CAHE3_B/D datasheet, 1.5KE47CAHE3_B/D pinout, 1.5KE47CAHE3_B/D application, or 1.5KE47CAHE3_B/D equivalent, this page delivers verified electrical specs, JEDEC 1.5KE package details, AEC-Q101 qualification status, clamping behavior under surge, and direct alternatives for ESD/lightning transient suppression in DC power rails and bidirectional data lines.
Technical Context
This TVS diode uses a glass-passivated silicon junction optimized for fast response (<1 ns) and low incremental surge resistance. Its bidirectional architecture enables symmetrical clamping in AC-coupled or floating circuits without polarity concerns, supporting both differential signal line and dual-rail DC bus protection.
Rated for 1500 W peak pulse power per 10/1000 µs waveform with 0.01% duty cycle, it sustains repetitive transients when thermally managed via lead-to-ambient thermal resistance (RθJA = 75 °C/W) and junction-to-lead resistance (RθJL = 15.4 °C/W), making it suitable for high-energy surge environments like automotive load dump and industrial relay switching.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 44.7 V / 49.4 V - ensures reliable conduction onset across manufacturing tolerance and temperature drift |
| VWM | 40.2 V - maximum continuous working voltage before leakage exceeds 1.0 µA |
| VC @ IPPM | 64.8 V at 23.1 A - clamped voltage during full 1500 W surge, defining protected circuit's voltage ceiling |
| PPPM | 1500 W - peak transient energy absorption capability with standardized 10/1000 µs waveform |
| TJ range | –55 °C to +175 °C - supports under-hood automotive and industrial ambient extremes |
| AEC-Q101 | Qualified - validated for automotive-grade reliability including temperature cycling and HTRB |
| Package | JEDEC DO-201AD (Case Style 1.5KE) - axial-leaded, RoHS-compliant, 0.968 g unit weight |
Pinout & Package
1.5KE47CAHE3_B/D is housed in a DO-201AD (Case Style 1.5KE) axial-leaded package with no polarity marking - consistent with bidirectional operation. Leads are matte tin-plated, solderable per J-STD-002 and JESD 22-B102, rated for 275 °C dip soldering (10 s max).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (unmarked) | Bidirectional terminal pair | No cathode band; symmetric conduction in either direction - simplifies layout on AC or floating nodes |
| Lead 1 / Lead 2 | Current path interface | Low-inductance axial leads enable direct series insertion into PCB traces without orientation constraints |
Key Features
| Feature | Design Value |
|---|---|
| Glass passivated junction | Enables stable VBR tolerance and long-term leakage performance under humidity and thermal stress |
| 1500 W peak pulse rating | Withstands IEC 61000-4-5 Level 4 surges (4 kV, 2 Ω source) without degradation |
| Sub-nanosecond response | Clamps transients within 1 ns - faster than MOVs or polymer-based protectors, preserving signal integrity |
| AEC-Q101 qualified | Validated for automotive electronics per stress tests including HTGB, TC, and HTRB |
| UL 497B recognized | Approved for telecom and industrial communication line protection per Underwriters Laboratories |
Applications
| Automotive Sensor Interface | Industrial PLC I/O Module |
|---|---|
Use Scenario: Protecting CAN/FlexRay transceivers and analog sensor inputs (e.g., pressure, temperature) from load dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Bidirectional voltage clamp placed between signal line and ground, absorbing ±100 V transients in <1 ns. Use Value: Prevents latch-up or gate oxide damage in downstream ASICs while maintaining signal fidelity due to low capacitance (<100 pF at 0 V). | Use Scenario: Safeguarding 24 V DC digital input channels in programmable logic controllers against relay contact bounce and inductive kickback. IC Role / Device Role / Timing Role: Primary overvoltage shunt device installed at terminal block entry point, diverting >100 A surge current away from optocoupler inputs. Use Value: Enables >100,000-cycle field reliability without derating, supported by 175 °C junction rating and AEC-Q101 validation. |
| Telecom Line Protection | Consumer Power Adapter Input |
Use Scenario: Secondary protection on POTS or DSL line cards exposed to lightning-induced surges per ITU-T K.20/K.21. IC Role / Device Role / Timing Role: Bidirectional clamping element placed after gas discharge tube (GDT), handling residual let-through energy. Use Value: Limits clamped voltage to ≤65 V, ensuring compliance with GR-1089-CORE surge immunity requirements for central office equipment. | Use Scenario: Input-stage transient suppression on universal-input (90–264 VAC) SMPS front ends subjected to EN 61000-4-5 surges. IC Role / Device Role / Timing Role: Fast-acting parallel clamp across bridge rectifier output, suppressing line-to-line and line-to-ground spikes. Use Value: Eliminates need for bulkier MOVs while delivering repeatable 1500 W clamping performance across 100,000+ surge events. |
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 PPPM (600 W), smaller SMB package (surface-mount), VC = 73.5 V @ 8.2 A | Preferred for space-constrained PCBs where 1500 W rating is not required; lacks AEC-Q101 qualification | Select when board area is critical and surge severity is limited to IEC 61000-4-5 Level 3 |
| 1.5SMC47CA | Same VBR/VC specs but SMC package (DO-214AB), 1500 W rating, AEC-Q101 qualified | Surface-mount alternative with identical electrical performance but different thermal path and layout footprint | Choose for automated assembly and improved thermal dissipation via copper pour, accepting reflow profile constraints |
Compared with 1.5KE47CAHE3_B/D, SMBJ45CA trades peak power and qualification for compactness, while 1.5SMC47CA retains full 1500 W capability and AEC-Q101 in an SMT form - enabling drop-in replacement only if pad layout and thermal design accommodate the SMC body.
Availability
1.5KE47CAHE3_B/D is available at Aetrix Electronics and suitable for automotive sensor protection, industrial I/O hardening, and telecom line safeguarding requiring stable component supply across extended product lifecycles.
Supply support for 1.5KE47CAHE3_B/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 discrete semiconductors for high-reliability power control, protection, and sensing applications, with global manufacturing and testing infrastructure.
The 1.5KE family targets high-energy transient suppression in harsh environments - engineered specifically for automotive, industrial, and telecom systems demanding AEC-Q101 validation and UL 497B recognition.
FAQ
What is the breakdown voltage tolerance for 1.5KE47CAHE3_B/D?
The 1.5KE47CAHE3_B/D has a specified breakdown voltage range of 44.7 V to 49.4 V at 1.0 mA test current, corresponding to ±10% tolerance around the nominal 47 V rating. This tolerance is guaranteed across operating temperature (–55 °C to +175 °C) and remains stable due to the glass-passivated junction construction used in the 1.5KE47CAHE3_B/D.
Is 1.5KE47CAHE3_B/D suitable for automotive applications?
Yes, 1.5KE47CAHE3_B/D is AEC-Q101 qualified per Vishay documentation (Rev. 09-Aug-2022, Doc. #88301), covering stress tests including high-temperature reverse bias, temperature cycling, and highly accelerated life testing. Its –55 °C to +175 °C operating range and bidirectional clamping make it appropriate for under-hood and chassis-mounted automotive electronics protection.
How does the clamping voltage of 1.5KE47CAHE3_B/D compare to its breakdown voltage?
The 1.5KE47CAHE3_B/D clamps at 64.8 V when subjected to its rated 23.1 A peak pulse current (10/1000 µs), which is approximately 38% above its minimum breakdown voltage of 44.7 V. This VC–VBR margin defines the protective headroom - ensuring downstream ICs see no more than 64.8 V during worst-case surge events, a key design parameter for 1.5KE47CAHE3_B/D selection.
What is the maximum reverse leakage current for 1.5KE47CAHE3_B/D at rated standoff voltage?
At its maximum working voltage (VWM) of 40.2 V and TA = 25 °C, the 1.5KE47CAHE3_B/D exhibits a maximum reverse leakage current (ID) of 1.0 µA. This low leakage preserves efficiency in always-on circuits and avoids false triggering in high-impedance monitoring paths - a confirmed specification per the Vishay 1.5KE6.8A–540A datasheet.
Does 1.5KE47CAHE3_B/D have UL recognition?
Yes, 1.5KE47CAHE3_B/D carries Underwriters Laboratories recognition under UL 497B (file E136766) for protector classification QVGQ2, applicable to both unidirectional and bidirectional devices in the 1.5KE family. This certification validates its use in telecom and industrial communication line protection where third-party safety compliance is mandatory.
1.5KE47CAHE3_B/D 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):
- 40.2V
- Voltage - Breakdown (Min):
- 44.7V
- Voltage - Clamping (Max) @ Ipp:
- 64.8V
- Current - Peak Pulse (10/1000µs):
- 24A
- 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
1.5KE47CAHE3_B/D FAQ
1.How can I place an order for 1.5KE47CAHE3_B/D through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5KE47CAHE3_B/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_B/D reliable?
The price and inventory of 1.5KE47CAHE3_B/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_B/D is usually 5 days.
3.What payment methods are accepted for 1.5KE47CAHE3_B/D?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5KE47CAHE3_B/D transactions.
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1.5KE47CAHE3_B/D orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5KE47CAHE3_B/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_B/D?
For technical support, including 1.5KE47CAHE3_B/D datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5KE47CAHE3_B/D requirements.
6.How does Aetrix verify that 1.5KE47CAHE3_B/D is sourced from the original manufacturer or authorized distributors?
All 1.5KE47CAHE3_B/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_B/D meets industry standards.
7.What is the process for return or replacement of 1.5KE47CAHE3_B/D?
All 1.5KE47CAHE3_B/D units undergo pre-shipment inspection (PSI). If there is an issue with 1.5KE47CAHE3_B/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_B/D part is unused and in its original packaging.
Return procedure for 1.5KE47CAHE3_B/D:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5KE47CAHE3_B/D Tags
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