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Vishay General Semiconductor - Diodes Division 1.5KE47CHE3/73
- Part No.:
- 1.5KE47CHE3/73
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-201AA, DO-27, Axial
- Datasheet:
-
1.5KE47CHE3/73.pdf
- Description:
- TVS DIODE 38.1VWM 67.8VC 1.5KE
- Quantity:
- Payment:
- Shipping:
Inventory:8,543
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Product details
Overview
1.5KE47CHE3/73 from Vishay General Semiconductor is a unidirectional Transient Voltage Suppressor (TVS) diode designed for robust overvoltage protection in power rails and signal lines. It features a 47 V breakdown voltage (VBR = 44.7–49.4 V at 1 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 widely deployed in automotive power supply inputs and industrial sensor interface protection.
For engineers reviewing the 1.5KE47CHE3/73 datasheet, 1.5KE47CHE3/73 pinout, 1.5KE47CHE3/73 application, or 1.5KE47CHE3/73 equivalent, this page delivers verified electrical parameters, JEDEC-standard 1.5KE package details, thermal derating behavior, AEC-Q101 qualification status, and direct alternative part comparisons - all grounded in Vishay's official Document Number 88301 (Rev. 09-Aug-2022).
Technical Context
This TVS diode uses a glass-passivated silicon junction optimized for fast transient response (<1 ns) and low incremental surge resistance. Its unidirectional polarity enables cathode-referenced clamping on positive-going transients, with a maximum reverse leakage current of 1.0 µA at 40.2 V stand-off voltage (VWM).
It supports repetitive surge events at 0.01% duty cycle and is rated for 200 A non-repetitive forward surge current (8.3 ms half-sine). Thermal performance is defined by RθJA = 75 °C/W and RθJL = 15.4 °C/W, enabling reliable operation under high-energy lightning-induced surges in automotive and industrial environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 44.7 V / 49.4 V at 1 mA - defines precise clamping onset threshold for design margining |
| VWM | 40.2 V - maximum continuous reverse operating voltage before leakage exceeds 1.0 µA |
| VC @ IPPM | 64.8 V at 23.1 A - actual clamped voltage during 1500 W transient, critical for downstream IC survivability |
| PPPM | 1500 W (10/1000 µs waveform) - peak surge energy handling capacity per industry-standard test |
| IFSM | 200 A (8.3 ms half-sine) - single-event surge current limit for input rectifier or fuse coordination |
| TJ range | –55 °C to +175 °C - enables under-hood automotive and high-temp industrial deployment without derating |
| Package | JEDEC DO-201AD (1.5KE case) - axial-leaded, RoHS-compliant, UL 94 V-0 molded epoxy body |
Pinout & Package
1.5KE47CHE3/73 uses the standard axial-leaded DO-201AD (Case Style 1.5KE) package. The cathode is marked by a color band on the body; the anode is unmarked. Leads are matte tin-plated and solderable per J-STD-002 and JESD 22-B102.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (unmarked end) | Current entry point during forward conduction | Connects to ground or low-side reference in unidirectional clamp configuration |
| Cathode (banded end) | Current exit point during forward conduction; clamping node in reverse bias | Connected to protected line (e.g., 48 V rail); clamps transients to ≤64.8 V when VIN > VBR |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Enables stable VBR tolerance (±5%) and long-term reliability under humidity and thermal cycling |
| 1500 W peak pulse power (10/1000 µs) | Meets IEC 61000-4-5 Level 4 surge immunity requirements for industrial and automotive ports |
| AEC-Q101 qualified (HE3 suffix) | Validated for automotive-grade stress testing including HTGB, HTRB, and temperature cycling |
| Low clamping ratio (VC/VBR ≈ 1.45) | Minimizes voltage overshoot during surge, protecting 50 V-rated MOSFETs and controllers |
| UL 94 V-0 compliant epoxy body | Prevents flame propagation in enclosed enclosures during fault conditions |
Applications
| Automotive Power Input Protection | Industrial Sensor Signal Line Clamp |
|---|---|
Use Scenario: Protecting 48 V battery-supplied ECUs against load dump and alternator surge transients. IC Role / Device Role / Timing Role: Unidirectional TVS placed between battery rail and DC-DC input, clamping transients within nanoseconds. Use Value: Limits voltage to ≤64.8 V during 1500 W surges, preventing damage to upstream PMICs and microcontrollers rated for 65 V absolute max. |
Use Scenario: Shielding analog output lines (e.g., 4–20 mA current loop) from ESD and inductive switching noise in factory automation. IC Role / Device Role / Timing Role: Low-capacitance TVS mounted at connector entry point, shunting transients before reaching op-amp or ADC input. Use Value: Sub-1 ns response ensures clamping occurs before sensitive front-end circuitry experiences overvoltage stress. |
| Telecom DC Power Feeding | Consumer Appliance Motor Drive Protection |
Use Scenario: Safeguarding PoE-powered equipment (e.g., IP cameras) from induced surges on 48 V DC feed lines. IC Role / Device Role / Timing Role: Primary overvoltage clamp on DC input stage, coordinated with upstream fuses and secondary filtering. Use Value: Withstands repeated 10/1000 µs surges up to 1500 W while maintaining <1 µA leakage at 40.2 V, preserving standby power integrity. |
Use Scenario: Suppressing flyback voltage spikes from brushed DC motors in home appliances (e.g., washing machine control boards). IC Role / Device Role / Timing Role: Mounted across motor terminals to clamp inductive kickback during PWM switching. Use Value: 200 A IFSM rating accommodates worst-case motor stall currents without degradation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ45A | DO-214AA package (SMB), lower PPPM = 600 W, VBR = 50–55.3 V, VC = 72.7 V @ 8.3 A | Surface-mount only; unsuitable for high-energy surges requiring 1500 W capability | Select when board space is constrained and surge energy is limited to IEC 61000-4-5 Level 2. |
| 1.5KE47A-E3/54 | Same 1.5KE package and electrical specs, but commercial-grade (non-AEC-Q101), E3 suffix only (no HE3) | Lacks automotive qualification; not approved for under-hood or safety-critical modules | Use in cost-sensitive industrial or consumer designs where AEC-Q101 is not mandated. |
Compared with 1.5KE47CHE3/73, SMBJ45A offers smaller footprint but sacrifices 60% peak power handling and automotive qualification; 1.5KE47A-E3/54 matches form/fit/function but omits AEC-Q101 validation, limiting deployment to non-automotive use cases.
Availability
1.5KE47CHE3/73 is available at Aetrix Electronics and suitable for automotive power systems, industrial sensor interfaces, telecom DC feeding, and appliance motor drive protection requiring stable component supply and long-lifecycle support.
Supply support for 1.5KE47CHE3/73 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 diodes, MOSFETs, optoelectronics, and passive components with emphasis on reliability and high-power handling.
The 1.5KE series was engineered specifically for high-energy transient suppression in harsh environments - targeting automotive, industrial, and telecom infrastructure where failure resilience and AEC-Q101 compliance are mandatory.
FAQ
What is the exact breakdown voltage range for 1.5KE47CHE3/73?
The 1.5KE47CHE3/73 has a guaranteed breakdown voltage (VBR) range of 44.7 V to 49.4 V at a test current of 1 mA, per Vishay Document 88301. This tight ±5% tolerance ensures predictable clamping onset and simplifies system-level overvoltage margin analysis without requiring binning or additional derating.
Is 1.5KE47CHE3/73 AEC-Q101 qualified?
Yes, 1.5KE47CHE3/73 is AEC-Q101 qualified. The "HE3" suffix denotes RoHS compliance and full AEC-Q101 qualification, validated per stress tests including high-temperature reverse bias (HTRB), high-temperature gate bias (HTGB), and temperature cycling - making it suitable for automotive under-hood and safety-related applications.
What does the "73" in 1.5KE47CHE3/73 signify?
The "73" in 1.5KE47CHE3/73 is a Vishay internal packaging code indicating tape-and-reel delivery in 13-inch diameter reels with a base quantity of 1400 units. It corresponds to the preferred delivery mode for automated SMT assembly and aligns with ordering code 1.5KE47CHE3_B/C in Vishay's documentation.
How does the clamping voltage of 1.5KE47CHE3/73 compare to its breakdown voltage?
The 1.5KE47CHE3/73 clamps at 64.8 V when subjected to its rated peak pulse current of 23.1 A (10/1000 µs waveform), yielding a clamping ratio (VC/VBR) of approximately 1.45. This low ratio ensures minimal overvoltage stress on downstream components - critical for protecting 65 V-rated power stages and logic interfaces.
Can 1.5KE47CHE3/73 be used in bidirectional configurations?
No, 1.5KE47CHE3/73 is a unidirectional TVS diode. Bidirectional variants in the same family use the "CA" suffix (e.g., 1.5KE47CA). Using 1.5KE47CHE3/73 in bidirectional applications would result in forward conduction during negative transients, causing failure. Always verify polarity marking and suffix before layout integration.
1.5KE47CHE3/73 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:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 175°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Through Hole
- Supplier Device Package:
- 1.5KE
1.5KE47CHE3/73 FAQ
1.How can I place an order for 1.5KE47CHE3/73 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5KE47CHE3/73 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 1.5KE47CHE3/73 reliable?
The price and inventory of 1.5KE47CHE3/73 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5KE47CHE3/73 is usually 5 days.
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Once your 1.5KE47CHE3/73 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 1.5KE47CHE3/73?
For technical support, including 1.5KE47CHE3/73 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5KE47CHE3/73 requirements.
6.How does Aetrix verify that 1.5KE47CHE3/73 is sourced from the original manufacturer or authorized distributors?
All 1.5KE47CHE3/73 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 1.5KE47CHE3/73 meets industry standards.
7.What is the process for return or replacement of 1.5KE47CHE3/73?
All 1.5KE47CHE3/73 units undergo pre-shipment inspection (PSI). If there is an issue with 1.5KE47CHE3/73, 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 1.5KE47CHE3/73 part is unused and in its original packaging.
Return procedure for 1.5KE47CHE3/73:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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