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Vishay General Semiconductor - Diodes Division 1.5KE47C-E3/73
- Part No.:
- 1.5KE47C-E3/73
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-201AA, DO-27, Axial
- Datasheet:
-
1.5KE47C-E3/73.pdf
- Description:
- TVS DIODE 38.1VWM 67.8VC 1.5KE
- Quantity:
- Payment:
- Shipping:
Inventory:4,130
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Product details
Overview
1.5KE47C-E3/73 from Vishay General Semiconductor is a bidirectional Transient Voltage Suppressor (TVS) diode designed for clamping voltage transients on signal and power lines. It features a 47 V breakdown voltage (VBR = 44.7–49.4 V), 1500 W peak pulse power (10/1000 µs), and clamps to ≤64.8 V at 23.1 A, protecting sensitive ICs and MOSFETs in industrial and automotive electronics.
For engineers reviewing the 1.5KE47C-E3/73 datasheet, 1.5KE47C-E3/73 pinout, 1.5KE47C-E3/73 application, or 1.5KE47C-E3/73 equivalent, this device delivers verified bidirectional surge suppression with low clamping ratio, fast sub-nanosecond response, and RoHS-compliant matte tin-plated leads suitable for J-STD-002 soldering.
Technical Context
The 1.5KE47C-E3/73 operates as a silicon avalanche diode with glass-passivated junction, enabling symmetrical clamping in both directions without polarity marking. Its 10/1000 µs waveform rating supports repetitive surge handling at 0.01% duty cycle, and thermal resistance is specified at RθJA = 75 °C/W and RθJL = 15.4 °C/W.
It exhibits a maximum reverse leakage of 1.0 µA at 40.2 V stand-off voltage (VWM), temperature coefficient of VBR = 0.101 %/°C, and maximum junction temperature of +175 °C - confirming suitability for harsh-environment transient protection where unidirectional alternatives would require external polarity management.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 44.7 V / 49.4 V - ensures reliable avalanche conduction onset within tight tolerance for consistent clamping behavior |
| VWM | 40.2 V - defines maximum continuous operating voltage before significant leakage begins |
| IPPM | 23.1 A - peak surge current it safely shunts during a 10/1000 µs transient event |
| VC @ IPPM | ≤64.8 V - clamped voltage under full-rated surge, yielding clamping ratio of ~1.38×VWM |
| PPPM | 1500 W - peak pulse power dissipation capability, enabling robust protection against lightning-induced surges |
| TJ max | +175 °C - allows operation in high-temperature environments such as engine compartments or industrial enclosures |
| Package | Case Style 1.5KE - axial-leaded DO-201AD package with UL 94 V-0 molded epoxy body |
Pinout & Package
1.5KE47C-E3/73 uses the standard DO-201AD axial package (Case Style 1.5KE), with no polarity marking due to its bidirectional construction. Leads are matte tin plated and solderable per J-STD-002 and JESD 22-B102.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (symmetrical) | Bidirectional avalanche junction | No functional distinction between terminals - connects across protected line and ground (or rail-to-rail) without orientation concern |
Key Features
| Feature | Design Value |
|---|---|
| Glass passivated chip junction | Ensures stable, repeatable avalanche characteristics and long-term reliability under repeated surge stress |
| 1500 W peak pulse power (10/1000 µs) | Supports EN 61000-4-5 Level 4 (4 kV) surge immunity when properly laid out with low-inductance grounding |
| Sub-nanosecond response time | Clamps transients before downstream ICs experience damaging overvoltage - critical for protecting high-speed interfaces |
| RoHS-compliant E3 suffix | Meets JESD 201 Class 1A whisker test and JEDEC-standard solderability requirements for automated assembly |
| UL 94 V-0 flammability rating | Mold compound self-extinguishes if exposed to flame, satisfying safety-critical end-equipment requirements |
Applications
| Industrial Motor Drives | Automotive Power Distribution |
|---|---|
Use Scenario: Protection of gate drivers and microcontrollers from inductive kickback during relay or solenoid switching in PLCs and CNC systems. IC Role / Device Role: Bidirectional clamping element placed across DC bus or control signal lines to limit transient excursions. Use Value: Prevents latch-up or permanent damage to 3.3 V/5 V logic by limiting spikes to ≤64.8 V while sustaining 1500 W surge energy. |
Use Scenario: Suppressing load-dump and jump-start transients on 12 V battery-fed ECUs and body control modules. IC Role / Device Role: Primary TVS on power input rails upstream of DC-DC converters and LDOs. Use Value: Withstands 23.1 A peak surge at 40.2 V working voltage, meeting ISO 7637-2 Pulse 5a requirements when combined with appropriate series impedance. |
| Telecom Line Interface | Consumer Appliance Control Boards |
Use Scenario: Shielding RS-485 transceivers and Ethernet PHYs from induced lightning surges on outdoor cabling. IC Role / Device Role: Secondary-level protection device mounted at board edge, coordinated with GDT or polymer PTC upstream. Use Value: Fast 1 ns response ensures clamping occurs before transceiver ESD structures fail, preserving data integrity during field deployment. |
Use Scenario: Safeguarding MCU I/O pins and display driver ICs from ESD and switching noise in washing machines and HVAC controllers. IC Role / Device Role: Point-of-use TVS on front-panel buttons, sensor inputs, and relay coil flyback paths. Use Value: Low 1.0 µA leakage at 40.2 V prevents false triggering in battery-backed circuits while maintaining <100 ns reaction time. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ45CA | Lower 600 W PPPM, SMC package (smaller footprint), VC = 73.5 V @ 8.3 A | Better suited for space-constrained PCBs but requires derating for >1 kV surge events | Select when board area is limited and peak surge energy is ≤600 W; verify layout inductance does not degrade clamping performance. |
| 1.5KE47CA | Same electrical specs and DO-201AD package, but non-RoHS (E2 suffix) and no JESD 201 whisker qualification | Acceptable for legacy industrial designs where RoHS compliance is not mandated | Choose only for cost-sensitive, non-automotive applications where lead-free assembly and whisker resistance are not required. |
Compared with SMBJ45CA and 1.5KE47CA, the 1.5KE47C-E3/73 uniquely combines 1500 W surge capacity, RoHS/E3 compliance, and bidirectional symmetry in an industry-standard axial package - making it optimal for new designs requiring regulatory alignment and high-energy transient resilience without redesigning board layout.
Availability
1.5KE47C-E3/73 is available at Aetrix Electronics and suitable for industrial motor drives, automotive power distribution, telecom line interface, and consumer appliance control boards requiring stable component supply and long-term manufacturability.
Supply support for 1.5KE47C-E3/73 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 high-reliability diodes, MOSFETs, optoelectronics, and passive components for demanding industrial and automotive applications.
The 1.5KE series was engineered specifically for high-energy transient suppression in power and signal lines, targeting applications where failure due to voltage surges must be eliminated - including automotive subsystems, industrial automation, and infrastructure equipment.
FAQ
What is the breakdown voltage range of the 1.5KE47C-E3/73?
The 1.5KE47C-E3/73 has a guaranteed breakdown voltage (VBR) range of 44.7 V to 49.4 V at 1.0 mA test current, measured per JEDEC standard. This tight tolerance ensures predictable clamping onset and compatibility with 40.2 V maximum working voltage (VWM) in bidirectional configurations. The 1.5KE47C-E3/73 maintains this specification across its full operating temperature range.
Is the 1.5KE47C-E3/73 unidirectional or bidirectional?
The 1.5KE47C-E3/73 is a bidirectional TVS diode, indicated by the "C" suffix in its part number. It provides symmetrical clamping in both polarities with no cathode marking on the package. This eliminates orientation concerns during placement and enables use in AC-coupled or floating signal lines where polarity reversal may occur - unlike unidirectional variants such as 1.5KE47A-E3/73.
What is the maximum clamping voltage of the 1.5KE47C-E3/73 under surge conditions?
The 1.5KE47C-E3/73 clamps to a maximum of 64.8 V when subjected to its rated peak pulse current of 23.1 A (10/1000 µs waveform). This value is measured per standardized test conditions and represents the upper limit of voltage seen by protected circuitry during worst-case surge events. The 1.5KE47C-E3/73 achieves this with a clamping ratio of approximately 1.38 relative to its 40.2 V stand-off voltage.
Does the 1.5KE47C-E3/73 meet automotive qualification standards?
The 1.5KE47C-E3/73 is RoHS-compliant (E3 suffix) and meets JESD 201 Class 1A whisker resistance, but it is not AEC-Q101 qualified. For automotive applications requiring AEC-Q101, Vishay offers the 1.5KE47CAHE3_B variant - which shares identical electrical specs but adds qualification per AEC-Q101 Rev D. The 1.5KE47C-E3/73 remains suitable for non-safety-critical automotive subsystems where qualification is not mandated.
What package type does the 1.5KE47C-E3/73 use?
The 1.5KE47C-E3/73 uses the DO-201AD axial-leaded package (Case Style 1.5KE), featuring a molded epoxy body rated UL 94 V-0 and matte tin-plated leads. Its dimensions are 5.3 mm diameter × 9.5 mm length, with 0.968 g unit weight. This industry-standard through-hole package supports manual and wave soldering and is compatible with legacy 1.5KE footprint designs.
1.5KE47C-E3/73 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):
- 38.1V
- Voltage - Breakdown (Min):
- 42.3V
- Voltage - Clamping (Max) @ Ipp:
- 67.8V
- Current - Peak Pulse (10/1000µs):
- 22.1A
- Power - Peak Pulse:
- 1500W (1.5kW)
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 175°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- 1.5KE
1.5KE47C-E3/73 FAQ
1.How can I place an order for 1.5KE47C-E3/73 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5KE47C-E3/73 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 1.5KE47C-E3/73 reliable?
The price and inventory of 1.5KE47C-E3/73 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5KE47C-E3/73 is usually 5 days.
3.What payment methods are accepted for 1.5KE47C-E3/73?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5KE47C-E3/73 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5KE47C-E3/73?
1.5KE47C-E3/73 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5KE47C-E3/73 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 1.5KE47C-E3/73?
For technical support, including 1.5KE47C-E3/73 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5KE47C-E3/73 requirements.
6.How does Aetrix verify that 1.5KE47C-E3/73 is sourced from the original manufacturer or authorized distributors?
All 1.5KE47C-E3/73 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 1.5KE47C-E3/73 meets industry standards.
7.What is the process for return or replacement of 1.5KE47C-E3/73?
All 1.5KE47C-E3/73 units undergo pre-shipment inspection (PSI). If there is an issue with 1.5KE47C-E3/73, 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 1.5KE47C-E3/73 part is unused and in its original packaging.
Return procedure for 1.5KE47C-E3/73:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5KE47C-E3/73 Tags
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