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Vishay General Semiconductor - Diodes Division 1.5KE47CAHE3_B/C
- Part No.:
- 1.5KE47CAHE3_B/C
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-201AA, DO-27, Axial
- Datasheet:
-
1.5KE47CAHE3_B/C.pdf
- Description:
- 1.5KW,47V 5%,BIDIR,AXIAL TVS
- Quantity:
- Payment:
- Shipping:
Inventory:7,065
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Product details
Overview
1.5KE47CAHE3_B/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 47 V breakdown voltage (VBR = 44.7–49.4 V at IT = 1.0 mA), 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 power supply rails.
For engineers reviewing the 1.5KE47CAHE3_B/C datasheet, 1.5KE47CAHE3_B/C pinout, 1.5KE47CAHE3_B/C application, or 1.5KE47CAHE3_B/C equivalent, this page delivers verified electrical parameters, JEDEC 1.5KE package details, bidirectional clamping behavior, AEC-Q101 qualification status, and direct alternative part comparisons - all grounded in Vishay Document #88301 (Rev. 09-Aug-2022).
Technical Context
This device implements a glass-passivated silicon junction optimized for fast transient suppression with sub-nanosecond response time (1 × 10−9 s). Its bidirectional architecture enables symmetrical clamping across both polarities without polarity marking, supporting AC-coupled or floating-line protection schemes.
Rated for 1500 W peak pulse power under 10/1000 µs waveform and derated above TA = 25 °C, it maintains stable clamping performance up to TJ = 175 °C. Thermal resistance is RθJA = 75 °C/W and RθJL = 15.4 °C/W, confirming suitability for lead-mounted PCB designs without heatsinking in moderate-power applications.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 44.7 V / 49.4 V at 1.0 mA - defines reliable conduction onset threshold for bidirectional surge events |
| VWM | 40.2 V - maximum continuous working voltage before leakage exceeds 1.0 µA; sets safe operating margin below breakdown |
| VC @ IPPM | 64.8 V at 23.1 A - clamped voltage during full-rated 1500 W transient, limiting downstream stress |
| PPPM | 1500 W (10/1000 µs) - peak surge energy handling capacity for lightning or inductive-switching transients |
| IPPM | 23.1 A - maximum non-repetitive surge current the device safely routes to ground |
| TJ range | –55 °C to +175 °C - supports operation in under-hood automotive and industrial environments |
| AEC-Q101 | Qualified - validated for automotive-grade reliability per stress-test requirements |
Pinout & Package
Package: JEDEC-standard Case Style 1.5KE - molded epoxy body with matte tin-plated leads, UL 94 V-0 rated, RoHS compliant, and qualified to JESD 201 Class 2 whisker test (HE3 suffix). No polarity marking; bidirectional symmetry eliminates cathode/anode orientation concerns.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (symmetrical) | Transient current path terminal | Both terminals function identically - connects across protected line and ground (or between differential lines) without directional constraint |
Key Features
| Feature | Design Value |
|---|---|
| Glass passivated junction | Enables stable, low-leakage performance and long-term reliability under thermal cycling |
| 1500 W peak pulse rating | Handles high-energy transients from inductive load switching or lightning-induced surges on 12 V/24 V systems |
| Sub-nanosecond response | Clamps within 1 ns - faster than MOVs or polymer-based protectors - preserving signal integrity in high-speed interfaces |
| AEC-Q101 qualification | Validated for automotive electronics including engine control units, ADAS sensors, and infotainment power rails |
| Low incremental surge resistance | Minimizes voltage overshoot during clamping, reducing risk of secondary overstress on downstream ICs |
Applications
| Automotive Sensor Protection | Industrial Power Supply Input |
|---|---|
Use Scenario: Protecting CAN bus transceivers and analog sensor front-ends (e.g., temperature, pressure) from load-dump and jump-start transients in vehicle ECUs. IC Role / Device Role / Timing Role: Bidirectional TVS placed across signal pair or supply-to-ground to clamp ±60 V spikes before they reach sensitive input stages. Use Value: Prevents latch-up or permanent damage to 5 V/3.3 V interface ICs while maintaining signal fidelity due to low capacitance and fast response. |
Use Scenario: Safeguarding 24 V DC input rails of PLC modules and motor drives against inductive kickback from relay coils or solenoids. IC Role / Device Role / Timing Role: Primary overvoltage clamp mounted directly at connector entry point, shunting surge energy to chassis ground. Use Value: Sustains system uptime by absorbing 1500 W transients without degradation - critical for EN 61000-4-5 compliance in industrial environments. |
| Telecom Line Interface | Consumer Power Adapter Output |
Use Scenario: Shielding Ethernet PHYs and PoE injectors from ESD and lightning-induced surges on outdoor cabling in telecom base stations. IC Role / Device Role / Timing Role: Bidirectional TVS installed differentially across data pairs and common-mode across VDD/GND to suppress both modes. Use Value: Meets IEC 61000-4-5 Level 3 (1 kV/2 Ω) requirements while adding <1 pF parasitic capacitance to preserve 100BASE-TX signal integrity. |
Use Scenario: Secondary-side overvoltage protection on 5 V/9 V USB-C adapter outputs to prevent damage from regulator failure or feedback loop loss. IC Role / Device Role / Timing Role: Final-stage clamp between output and ground, activated only during fault conditions exceeding 40.2 V. Use Value: Eliminates need for redundant regulation circuitry - provides fail-safe shutdown margin without affecting normal-load efficiency or regulation accuracy. |
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 (IPPM = 13.3 A), same VBR range (42.3–47.1 V) | Better suited for space-constrained consumer PCBs; insufficient for 1500 W industrial transients | Select when board area is limited and surge energy is ≤600 W - not a drop-in replacement for 1.5KE47CAHE3_B/C's power rating |
| 1.5SMC47CA | Same 1500 W rating and VBR, but SMC package (larger footprint, higher IPPM = 23.3 A), RoHS-compliant E3 variant available | Offers identical protection level with enhanced thermal dissipation; requires PCB layout change | Choose for improved thermal margin in high-ambient-temperature environments - compatible functionally but not pin-to-pin |
Compared with 1.5KE47CAHE3_B/C, SMBJ45CA trades surge capacity for compactness, while 1.5SMC47CA retains full 1500 W capability in a thermally superior package - both require layout review, as neither shares the 1.5KE case outline or lead configuration.
Availability
1.5KE47CAHE3_B/C is available at Aetrix Electronics and suitable for automotive sensor protection, industrial power supply input, telecom line interface, and consumer power adapter output requiring stable component supply and AEC-Q101 assurance.
Supply support for 1.5KE47CAHE3_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, power handling, and automotive qualification.
The 1.5KE series was engineered specifically for high-energy transient suppression in harsh environments, targeting design-in across automotive, industrial, and telecom infrastructure where robustness and AEC-Q101 validation are mandatory.
FAQ
What is the breakdown voltage tolerance for 1.5KE47CAHE3_B/C?
The 1.5KE47CAHE3_B/C has a specified breakdown voltage range of 44.7 V to 49.4 V at a test current of 1.0 mA, per Vishay Document #88301. This ±5% tolerance ensures consistent clamping behavior across production lots and supports reliable design margins in circuits where precise overvoltage thresholds are required. The device maintains this specification under standard test conditions (TA = 25 °C).
Is 1.5KE47CAHE3_B/C suitable for automotive applications?
Yes, 1.5KE47CAHE3_B/C is AEC-Q101 qualified per Vishay's documentation (Notes section, page 3), covering devices from 1.5KE6.8CAHE3_B to 1.5KE220CAHE3_B. Its –55 °C to +175 °C operating junction temperature range, glass-passivated junction, and 1500 W surge capability make it appropriate for under-hood and chassis-mounted automotive electronics, including body control modules and ADAS sensor interfaces.
How does the bidirectional nature of 1.5KE47CAHE3_B/C affect its placement on the PCB?
The 1.5KE47CAHE3_B/C has no polarity marking and functions identically in both directions, so it can be placed across any two nodes requiring symmetrical overvoltage protection - such as between differential signal lines or between a supply rail and ground. Unlike unidirectional TVS diodes, no orientation check is needed during assembly, simplifying manufacturing and eliminating risk of reverse installation.
What is the clamping voltage of 1.5KE47CAHE3_B/C at its rated peak pulse current?
At its rated peak pulse current of 23.1 A (derived from 1500 W and VC = 64.8 V), the 1.5KE47CAHE3_B/C clamps to a maximum of 64.8 V under 10/1000 µs waveform conditions. This value is measured per Figure 9 in Vishay Document #88301 and represents the upper limit of voltage seen by protected circuitry during worst-case surge events.
Does 1.5KE47CAHE3_B/C require a heatsink for standard operation?
No, the 1.5KE47CAHE3_B/C is designed for lead-mounted operation without external heatsinking. Its thermal resistance values - RθJA = 75 °C/W and RθJL = 15.4 °C/W - indicate adequate self-dissipation for transient-only duty cycles (0.01 % duty cycle, per datasheet). Continuous power dissipation is limited to 6.5 W at TL = 75 °C, but typical TVS use involves short-duration pulses, not steady-state loading.
1.5KE47CAHE3_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):
- 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/C FAQ
1.How can I place an order for 1.5KE47CAHE3_B/C through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5KE47CAHE3_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 1.5KE47CAHE3_B/C reliable?
The price and inventory of 1.5KE47CAHE3_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 1.5KE47CAHE3_B/C is usually 5 days.
3.What payment methods are accepted for 1.5KE47CAHE3_B/C?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5KE47CAHE3_B/C transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5KE47CAHE3_B/C?
1.5KE47CAHE3_B/C orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5KE47CAHE3_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 1.5KE47CAHE3_B/C?
For technical support, including 1.5KE47CAHE3_B/C datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5KE47CAHE3_B/C requirements.
6.How does Aetrix verify that 1.5KE47CAHE3_B/C is sourced from the original manufacturer or authorized distributors?
All 1.5KE47CAHE3_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 1.5KE47CAHE3_B/C meets industry standards.
7.What is the process for return or replacement of 1.5KE47CAHE3_B/C?
All 1.5KE47CAHE3_B/C units undergo pre-shipment inspection (PSI). If there is an issue with 1.5KE47CAHE3_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 1.5KE47CAHE3_B/C part is unused and in its original packaging.
Return procedure for 1.5KE47CAHE3_B/C:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5KE47CAHE3_B/C Tags
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