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Vishay General Semiconductor - Diodes Division 1.5KE47C-E3/54
- Part No.:
- 1.5KE47C-E3/54
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-201AA, DO-27, Axial
- Datasheet:
-
1.5KE47C-E3/54.pdf
- Description:
- TVS DIODE 38.1VWM 67.8VC 1.5KE
- Quantity:
- Payment:
- Shipping:
Inventory:4,939
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Product details
Overview
1.5KE47C-E3/54 from Vishay General Semiconductor is a bidirectional Transient Voltage Suppressor (TVS) diode designed for robust overvoltage protection in signal and power lines. It features a 47 V breakdown voltage (VBR min/max = 44.7–49.4 V), 40.2 V standoff voltage (VWM), 64.8 V clamping voltage (VC) at 23.1 A peak pulse current, and 1500 W peak pulse power rating with 10/1000 µs waveform - deployed in automotive sensor interfaces and industrial I/O protection.
For engineers reviewing the 1.5KE47C-E3/54 datasheet, 1.5KE47C-E3/54 pinout, 1.5KE47C-E3/54 application, or 1.5KE47C-E3/54 equivalent, this page delivers verified electrical parameters, JEDEC 1.5KE package details, polarity marking guidance, clamping performance under surge conditions, and AEC-Q101-qualified alternatives for automotive-grade designs.
Technical Context
This bidirectional TVS operates symmetrically in both polarities, with no cathode band marking and identical VBR, VWM, and VC characteristics in forward and reverse directions. Its glass-passivated junction enables sub-nanosecond response time (<1 ns) and low incremental surge resistance, critical for protecting fast-switching MOSFET gates and precision analog front-ends.
Rated for -55 °C to +175 °C junction temperature, it supports high-reliability operation in engine control units and telecom power supplies. The device complies with UL 94 V-0 flammability standard, uses matte tin-plated leads solderable per J-STD-002, and meets JESD 201 Class 1A whisker testing when specified with E3 suffix.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 44.7 V / 49.4 V at 1.0 mA test current - defines precise voltage threshold where clamping begins |
| VWM | 40.2 V - maximum continuous working voltage before leakage exceeds 1.0 µA |
| VC @ IPPM | 64.8 V at 23.1 A - peak clamped voltage during 10/1000 µs surge, limiting stress on downstream ICs |
| PPPM | 1500 W - peak pulse power handling capability, enabling protection against lightning-induced transients |
| IPPM | 23.1 A - maximum non-repetitive surge current the device safely clamps without failure |
| TJ range | -55 °C to +175 °C - supports under-hood automotive and industrial ambient environments |
| Package | JEDEC DO-201AD (Case Style 1.5KE) - axial-leaded, through-hole mount with 0.375" lead length |
Pinout & Package
1.5KE47C-E3/54 uses the JEDEC-standard DO-201AD axial package (Case Style 1.5KE), with two unmarked leads - no polarity marking as required for bidirectional operation. Leads are matte tin-plated, compliant with J-STD-002 solderability and JESD 201 Class 1A whisker testing.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode / Cathode (symmetrical) | Bidirectional conduction path | No functional distinction between leads; either terminal serves as anode or cathode depending on transient polarity |
| Leads (axial) | PCB mechanical anchor & thermal path | 0.375" (9.5 mm) lead length provides mechanical stability and aids heat dissipation into PCB copper |
Key Features
| Feature | Design Value |
|---|---|
| Glass passivated junction | Enables stable VBR tolerance (±5%), low leakage (<1 µA at VWM), and long-term reliability under thermal cycling |
| 1500 W peak pulse power (10/1000 µs) | Withstands IEC 61000-4-5 Level 4 surges (4 kV line-earth) without degradation when properly mounted |
| Sub-nanosecond response time | Clamps transients within <1 ns - faster than MOVs or gas discharge tubes, preserving signal integrity in high-speed interfaces |
| UL 94 V-0 molded epoxy case | Self-extinguishing encapsulation prevents flame propagation in safety-critical power supply and EV charging applications |
| AEC-Q101 qualification option | Available as 1.5KE47CHE3_B variant - validated for automotive electronics including body control modules and ADAS sensor hubs |
Applications
| Automotive Sensor Protection | Industrial PLC I/O Protection |
|---|---|
Use Scenario: Protecting CAN bus transceivers and LIN interface ICs from load dump and ISO 7637-2 pulses in vehicle ECUs. IC Role / Device Role / Timing Role: Bidirectional clamping element placed across differential signal pair or supply rail to shunt surge energy before reaching sensitive PHY layer. Use Value: Limits transient voltage to ≤64.8 V during 23.1 A surges, preventing latch-up or gate oxide rupture in 5 V/3.3 V transceivers. |
Use Scenario: Safeguarding 24 V digital input modules in factory automation systems exposed to relay coil flyback and ESD events. IC Role / Device Role / Timing Role: Primary overvoltage clamp on field-side input terminals, coordinated with series impedance and filtering. Use Value: Maintains system uptime by absorbing 1500 W surges without failure, eliminating need for costly field returns due to input-stage damage. |
| Telecom Power Supply Clamp | Consumer Appliance Motor Drive Protection |
Use Scenario: Secondary-side transient suppression on 48 V DC-DC outputs feeding base station RF amplifiers. IC Role / Device Role / Timing Role: Fast-acting crowbar device parallel to output capacitor, activated before regulator overvoltage shutdown triggers. Use Value: Clamps 10/1000 µs surges to 64.8 V within 1 ns, preventing false triggering of protection circuits and maintaining clean bias rails. |
Use Scenario: Input rail protection in smart washing machine motor controllers subjected to brush-commutator arcing and ESD. IC Role / Device Role / Timing Role: Standoff-rated suppressor across main 310 V DC bus to absorb switching spikes and user-interface ESD. Use Value: Withstands repetitive 1500 W pulses at 0.01% duty cycle, extending controller lifetime beyond 10 years in harsh home environments. |
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 | DO-214AA package (SMB), lower 600 W PPPM, same 45 V VWM/64.5 V VC | Surface-mount only; unsuitable for high-power through-hole designs or legacy board rework | Select when space-constrained PCB layout requires SMT and surge energy is ≤600 W |
| 1.5KE47CAHE3_B | Identical electrical specs; AEC-Q101 qualified, HE3 suffix denotes whisker-tested leads and automotive traceability | Required for production automotive modules; not needed for commercial industrial use | Choose for Tier 1 automotive programs requiring PPAP documentation and extended temperature validation |
Compared with 1.5KE47C-E3/54, SMBJ45CA offers footprint reduction but sacrifices 60% peak power handling, while 1.5KE47CAHE3_B delivers identical protection with certified automotive reliability - making the latter essential for safety-critical vehicle systems and the former viable only in cost-optimized consumer designs.
Availability
1.5KE47C-E3/54 is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial PLC I/O protection, telecom power supply clamping, and consumer appliance motor drive protection requiring stable component supply and full traceability.
Supply support for 1.5KE47C-E3/54 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 high-reliability diodes, MOSFETs, optoelectronics, and passive components for demanding industrial and automotive applications.
The 1.5KE family was engineered specifically for high-energy transient suppression in harsh environments - delivering consistent clamping performance across temperature, long operational life under repetitive surges, and compliance with automotive and telecom immunity standards.
FAQ
What is the clamping voltage of the 1.5KE47C-E3/54 under a 10/1000 µs surge?
The 1.5KE47C-E3/54 clamps to a maximum of 64.8 V at its rated peak pulse current of 23.1 A with a 10/1000 µs waveform. This value is measured per JEDEC test conditions and ensures downstream ICs experience limited overvoltage stress during transient events. The clamping voltage remains stable across operating temperatures from -55 °C to +175 °C, as confirmed in Vishay's 88301 datasheet Figure 7.
Is the 1.5KE47C-E3/54 RoHS compliant and lead-free?
Yes, the 1.5KE47C-E3/54 is RoHS compliant and lead-free. The "E3" suffix explicitly indicates commercial-grade, RoHS-compliant construction with matte tin-plated leads meeting J-STD-002 solderability requirements. It also passes JESD 201 Class 1A whisker testing, ensuring long-term interconnect reliability in vibration-prone applications like automotive and industrial equipment.
How does the 1.5KE47C-E3/54 differ from unidirectional variants like 1.5KE47A-E3/54?
The 1.5KE47C-E3/54 is bidirectional with symmetrical clamping in both polarities and no cathode band marking, whereas 1.5KE47A-E3/54 is unidirectional, marked with a cathode band and conducts only in reverse bias. Electrically, the "C" version has identical VBR, VWM, and VC values in both directions, making it ideal for AC-coupled or differential signal lines - unlike the "A" version, which is suited for DC rail protection with defined polarity.
Can the 1.5KE47C-E3/54 be used in parallel to increase surge current handling?
Yes, multiple 1.5KE47C-E3/54 devices can be paralleled to increase total surge current capacity, provided they are matched for VBR (within ±3%) and mounted with symmetrical thermal paths. Vishay's application notes confirm this technique for exceeding 23.1 A single-device limits - however, derating by 20% per added device is recommended to ensure balanced current sharing and avoid thermal runaway.
What is the maximum operating temperature for the 1.5KE47C-E3/54 junction?
The 1.5KE47C-E3/54 has a maximum junction temperature (TJ) of +175 °C and a storage temperature range of -55 °C to +175 °C. Its thermal resistance from junction to lead (RθJL) is 15.4 °C/W, meaning proper PCB copper pour and lead length (0.375") are essential to maintain safe TJ under repeated 1500 W surges. Derating curves in Figure 2 of the 88301 datasheet define allowable power reduction above 25 °C ambient.
1.5KE47C-E3/54 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:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 175°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- 1.5KE
1.5KE47C-E3/54 FAQ
1.How can I place an order for 1.5KE47C-E3/54 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5KE47C-E3/54 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 1.5KE47C-E3/54 reliable?
The price and inventory of 1.5KE47C-E3/54 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5KE47C-E3/54 is usually 5 days.
3.What payment methods are accepted for 1.5KE47C-E3/54?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5KE47C-E3/54 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5KE47C-E3/54?
1.5KE47C-E3/54 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5KE47C-E3/54 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 1.5KE47C-E3/54?
For technical support, including 1.5KE47C-E3/54 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5KE47C-E3/54 requirements.
6.How does Aetrix verify that 1.5KE47C-E3/54 is sourced from the original manufacturer or authorized distributors?
All 1.5KE47C-E3/54 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 1.5KE47C-E3/54 meets industry standards.
7.What is the process for return or replacement of 1.5KE47C-E3/54?
All 1.5KE47C-E3/54 units undergo pre-shipment inspection (PSI). If there is an issue with 1.5KE47C-E3/54, 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 1.5KE47C-E3/54 part is unused and in its original packaging.
Return procedure for 1.5KE47C-E3/54:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5KE47C-E3/54 Tags
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