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Vishay General Semiconductor - Diodes Division 1.5KE47CHE3/54
- Part No.:
- 1.5KE47CHE3/54
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-201AA, DO-27, Axial
- Datasheet:
-
1.5KE47CHE3/54.pdf
- Description:
- TVS DIODE 38.1VWM 67.8VC 1.5KE
- Quantity:
- Payment:
- Shipping:
Inventory:7,740
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Product details
Overview
1.5KE47CHE3/54 from Vishay General Semiconductor is a bidirectional Transient Voltage Suppressor (TVS) diode designed for high-energy surge protection in power 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. It is used to protect MOSFETs, ICs, and sensor interfaces in automotive and industrial power supplies.
For engineers reviewing the 1.5KE47CHE3/54 datasheet, 1.5KE47CHE3/54 pinout, 1.5KE47CHE3/54 application, or 1.5KE47CHE3/54 equivalent, this page delivers verified electrical parameters, JEDEC-standard 1.5KE package details, AEC-Q101 qualification status, clamping performance under transient stress, and direct alternative part comparisons - all grounded in Vishay's official 88301 specification document.
Technical Context
This device functions as a voltage-clamping protector with bidirectional polarity, enabling symmetrical suppression of positive and negative transients without external polarity management. Its glass-passivated junction ensures stable VBR tolerance (±5 %), low incremental surge resistance, and sub-nanosecond response time (<1 ns).
Rated for 1500 W peak pulse power per 10/1000 µs waveform at TA = 25 °C, it derates linearly above 25 °C with RθJA = 75 °C/W and supports repetitive surge duty cycles up to 0.01 %. The 1.5KE47CHE3/54 variant carries HE3 suffix indicating RoHS compliance and AEC-Q101 qualification per note (2) in Document 88301.
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 bidirectional overvoltage events |
| VC @ IPPM | 64.8 V at 23.1 A - maximum clamped voltage during full-rated 1500 W transient, critical for downstream component survivability |
| PPPM | 1500 W (10/1000 µs) - enables robust protection against lightning-induced surges and inductive switching spikes |
| VWM | 40.2 V - maximum continuous working voltage; must exceed normal circuit operating voltage to prevent leakage conduction |
| ID @ VWM | 1.0 µA - ultra-low reverse leakage ensures minimal power loss and signal integrity in standby operation |
| TJ range | –55 °C to +175 °C - supports deployment in under-hood automotive, industrial motor drives, and outdoor telecom equipment |
| Package | JEDEC DO-201AD (Case Style 1.5KE) - industry-standard axial-leaded package with 0.375" lead length, UL 94 V-0 molded epoxy body |
Pinout & Package
1.5KE47CHE3/54 uses a two-terminal axial-leaded DO-201AD package (Case Style 1.5KE). No polarity marking is present on bidirectional variants; terminals are electrically symmetric and interchangeable.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (both ends) | Bidirectional surge path | Either terminal serves as anode or cathode depending on transient polarity - no orientation required during PCB placement |
Key Features
| Feature | Design Value |
|---|---|
| Glass passivated junction | Ensures stable VBR tolerance (±5 %) and long-term reliability under thermal cycling and humidity stress |
| 1500 W peak pulse rating | Withstands 10/1000 µs transients common in ISO 7637-2 automotive load dump and IEC 61000-4-5 surge tests |
| AEC-Q101 qualified | Validated for automotive electronics per note (2) - applicable to 1.5KE47CHE3/54 (HE3_B revision) |
| Sub-nanosecond response | Clamps transients within <1 ns, protecting fast-switching MOSFET gates and precision analog front-ends before damage occurs |
| UL 94 V-0 molding compound | Provides flame-retardant encapsulation essential for safety-critical industrial and transportation systems |
Applications
| Automotive Power Distribution | Industrial Motor Drive Inputs |
|---|---|
Use Scenario: Protection of 12 V/24 V battery-fed ECUs against load dump and alternator ripple. IC Role / Device Role / Timing Role: Bidirectional TVS placed across input rails to clamp ±100 V transients to safe levels. Use Value: Prevents latch-up or gate oxide rupture in PMICs and microcontrollers by limiting VC to 64.8 V during 1500 W surges. | Use Scenario: Input stage safeguard for variable-frequency drives exposed to inductive kickback from contactor switching. IC Role / Device Role / Timing Role: Standoff voltage (40.2 V) exceeds nominal DC bus; clamps 600 V spikes to 64.8 V before reaching IGBT gate drivers. Use Value: Eliminates need for additional RC snubbers while maintaining immunity to repetitive 0.01 % duty cycle surges. |
| Telecom Line Interface | Sensor Signal Conditioning |
Use Scenario: Surge protection on RS-485 or Ethernet PHY lines in outdoor base stations subject to lightning-induced common-mode transients. IC Role / Device Role / Timing Role: Bidirectional clamping element placed differential-to-ground to suppress both polarities of induced surges. Use Value: Low 1.0 µA leakage at 40.2 V preserves signal integrity on high-impedance data lines without loading. | Use Scenario: Front-end protection for automotive pressure or temperature sensors connected to 5 V analog inputs. IC Role / Device Role / Timing Role: Fast-response TVS shunting ESD (IEC 61000-4-2) and cable discharge events before reaching ADC input stages. Use Value: Sub-ns response prevents transient-induced offset errors or ADC saturation during real-time sensor sampling. |
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), VBR = 50–55.3 V, VC = 73.5 V @ 8.2 A | Not AEC-Q101 qualified; suited for space-constrained consumer or computing boards, not under-hood automotive | Select when board area is limited and surge energy requirements are ≤600 W; verify layout thermal relief for SMB footprint. |
| 1.5KE47CA | Same 1.5KE package and electrical specs, but E3 suffix only (RoHS-compliant commercial grade, not AEC-Q101 qualified) | Lacks automotive qualification; acceptable for industrial controls where AEC-Q101 is not mandated | Choose for cost-sensitive non-automotive designs requiring identical form, fit, and function without qualification overhead. |
Compared with 1.5KE47CHE3/54, SMBJ45CA trades peak power and qualification for compactness, while 1.5KE47CA retains mechanical compatibility but omits AEC-Q101 validation - making 1.5KE47CHE3/54 the sole option when automotive-grade reliability and 1500 W clamping are jointly required.
Availability
1.5KE47CHE3/54 is available at Aetrix Electronics and suitable for automotive power modules, industrial motor drive inputs, telecom line interfaces, and sensor signal conditioning circuits requiring stable component supply and long-term lifecycle support.
Supply support for 1.5KE47CHE3/54 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, rectifiers, and protection devices 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 automotive, industrial, and telecom applications where failure due to voltage surges is unacceptable.
FAQ
What does the "HE3" suffix mean in 1.5KE47CHE3/54?
The HE3 suffix in 1.5KE47CHE3/54 indicates RoHS-compliant construction and AEC-Q101 qualification per Vishay Document 88301 note (2). "H" denotes AEC-Q101 qualification, "E3" confirms RoHS compliance and JESD 201 Class 2 whisker resistance. This distinguishes it from commercial-grade E3-only variants like 1.5KE47CA.
Is 1.5KE47CHE3/54 unidirectional or bidirectional?
1.5KE47CHE3/54 is a bidirectional TVS diode, as confirmed by the "C" in its part number (1.5KE47C) and explicitly stated in Vishay's documentation. It provides symmetrical clamping for both positive and negative transients, with no polarity marking on the body and interchangeable terminals.
What is the clamping voltage of 1.5KE47CHE3/54 at rated surge current?
The clamping voltage (VC) of 1.5KE47CHE3/54 is 64.8 V at 23.1 A peak pulse current (IPPM), measured under the standard 10/1000 µs waveform. This value is critical for ensuring downstream components remain below their absolute maximum voltage ratings during surge events.
Can 1.5KE47CHE3/54 be used in place of a unidirectional TVS like 1.5KE47A?
No - 1.5KE47CHE3/54 is bidirectional and cannot replace unidirectional 1.5KE47A in circuits requiring DC blocking or polarity-specific clamping. While both share VBR and PPPM, the unidirectional version has a cathode band and conducts forward current; substituting without circuit review risks unintended conduction or inadequate protection.
What packaging format does 1.5KE47CHE3/54 ship in?
1.5KE47CHE3/54 ships in 13" diameter paper tape and reel packaging with a base quantity of 1400 units per reel, as specified in Vishay's ordering information table (Document 88301, page 3). The "/54" suffix denotes the preferred package code for this delivery mode.
1.5KE47CHE3/54 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:
- 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
1.5KE47CHE3/54 FAQ
1.How can I place an order for 1.5KE47CHE3/54 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5KE47CHE3/54 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 1.5KE47CHE3/54 reliable?
The price and inventory of 1.5KE47CHE3/54 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5KE47CHE3/54 is usually 5 days.
3.What payment methods are accepted for 1.5KE47CHE3/54?
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Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5KE47CHE3/54?
1.5KE47CHE3/54 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5KE47CHE3/54 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 1.5KE47CHE3/54?
For technical support, including 1.5KE47CHE3/54 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5KE47CHE3/54 requirements.
6.How does Aetrix verify that 1.5KE47CHE3/54 is sourced from the original manufacturer or authorized distributors?
All 1.5KE47CHE3/54 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 1.5KE47CHE3/54 meets industry standards.
7.What is the process for return or replacement of 1.5KE47CHE3/54?
All 1.5KE47CHE3/54 units undergo pre-shipment inspection (PSI). If there is an issue with 1.5KE47CHE3/54, 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 1.5KE47CHE3/54 part is unused and in its original packaging.
Return procedure for 1.5KE47CHE3/54:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5KE47CHE3/54 Tags
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