My Inquiry
My Account
Vishay General Semiconductor - Diodes Division 1.5KE47CA/54
- Part No.:
- 1.5KE47CA/54
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-201AA, DO-27, Axial
- Datasheet:
-
1.5KE47CA/54.pdf
- Description:
- TVS DIODE 40.2VWM 64.8VC 1.5KE
- Quantity:
- Payment:
- Shipping:
Inventory:9,610
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
1.5KE47CA/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 junction temperature. It protects MOSFETs, ICs, and sensor interfaces against lightning-induced transients and inductive switching spikes.
For engineers reviewing the 1.5KE47CA/54 datasheet, 1.5KE47CA/54 pinout, 1.5KE47CA/54 application, or 1.5KE47CA/54 equivalent, this page delivers verified electrical parameters, JEDEC-standard 1.5KE package details, bidirectional clamping behavior, thermal derating curves, and direct alternatives with documented VWM, VC, and IPPM differences - all critical for automotive ECU, industrial PLC, and telecom line-card surge design.
Technical Context
This device uses a glass-passivated silicon junction optimized for sub-nanosecond response (<1 ns) and low incremental surge resistance. Its bidirectional structure enables symmetrical clamping in AC-coupled or floating circuits without polarity constraints, supporting both differential and common-mode transient suppression.
Rated for 1500 W peak pulse power under 10/1000 µs waveform with 0.01% duty cycle, it sustains repetitive surges when thermally managed via lead-to-ambient thermal resistance (RθJA = 75 °C/W) and junction-to-lead (RθJL = 15.4 °C/W). Standoff voltage is 40.2 V, reverse leakage ≤1.0 µA at VWM, and maximum clamping occurs at 64.8 V.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 44.7 V / 49.4 V at 1 mA - defines reliable conduction onset under bidirectional surge conditions |
| VWM | 40.2 V - maximum continuous working voltage before leakage exceeds 1.0 µA |
| VC @ IPPM | 64.8 V at 23.1 A - clamped voltage during full 1500 W transient, limiting downstream stress |
| PPPM | 1500 W (10/1000 µs) - peak surge energy handling capacity per industry-standard waveform |
| TJ range | –55 °C to +175 °C - supports operation in under-hood automotive and industrial ambient environments |
| Package | JEDEC DO-201AD (Case Style 1.5KE) - axial-leaded, UL 94 V-0 molded epoxy body |
| Leakage current | ≤1.0 µA at VWM - ensures minimal standby power loss in always-on systems |
Pinout & Package
1.5KE47CA/54 is housed in a DO-201AD (Case Style 1.5KE) axial-leaded package with matte tin-plated leads compliant with J-STD-002 and JESD 22-B102. Bidirectional construction means no cathode marking; both terminals are functionally identical for transient clamping.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (symmetrical) | Bidirectional surge path | Either terminal serves as input/output for clamping; no polarity dependency in PCB layout |
| Lead 1 / Lead 2 | Thermal and electrical interface | Leads conduct surge current and dissipate heat; RθJL = 15.4 °C/W enables direct PCB copper pour cooling |
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 rating | Handles IEC 61000-4-5 Level 4 surges (4 kV/2 Ω) without degradation when properly mounted |
| Sub-nanosecond response | Clamps transients within 1 ns - faster than MOVs or polymer-based protectors, preserving signal integrity |
| AEC-Q101 qualified option | 1.5KE47CAHE3_B variant available for automotive applications requiring qualification traceability |
| UL 94 V-0 molding compound | Self-extinguishing epoxy meets fire-safety requirements for industrial and telecom enclosures |
Applications
| Automotive Power Distribution | Industrial Sensor Interface |
|---|---|
Use Scenario: Protecting 12 V battery-fed ECUs from load-dump and alternator ripple transients. IC Role / Device Role / Timing Role: Bidirectional TVS placed across power rail to clamp ±100 V spikes within nanoseconds. Use Value: Limits voltage seen by MCU and CAN transceivers to ≤64.8 V, preventing latch-up or gate oxide damage. |
Use Scenario: Shielding 4–20 mA analog sensor outputs from ESD and field-wiring induced surges. IC Role / Device Role / Timing Role: Placed differential across signal pair to suppress common-mode transients up to 1500 W. Use Value: Maintains signal fidelity below 40.2 V standoff while surviving 8/20 µs lightning surges per IEC 61000-4-5. |
| Telecom Line Card Protection | Consumer Power Adapter Input |
Use Scenario: Safeguarding DSL/POE front-end circuitry against induced lightning on outdoor copper lines. IC Role / Device Role / Timing Role: Primary-level bidirectional clamp on AC-input side of isolation transformer. Use Value: Absorbs 10/1000 µs surges up to 23.1 A without failure, meeting Telcordia GR-1089-CORE requirements. |
Use Scenario: Secondary-side overvoltage protection in universal-input AC/DC adapters. IC Role / Device Role / Timing Role: Clamps rectified DC bus against capacitor failure or regulator fault events. Use Value: Prevents catastrophic failure of downstream SMPS controllers by limiting bus voltage to 64.8 V. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Littelfuse SMAJ47CA | VBR = 44.7–49.4 V, VC = 77.0 V @ 19.5 A, PPPM = 400 W, SMA package | Lower power rating and surface-mount form factor - suitable only for lower-energy surges or space-constrained layouts | Select when board area is limited and surge threat level is ≤IEC 61000-4-5 Level 2; not drop-in for 1500 W requirements |
| ON Semiconductor 1.5SMC47CA | VBR = 44.7–49.4 V, VC = 77.0 V @ 19.5 A, PPPM = 1500 W, SMC package | Same power rating but SMC surface-mount package - requires rework of PCB layout and thermal pad design | Choose for automated assembly where axial leads are incompatible; verify RθJA (50 °C/W typical) meets thermal budget |
Compared with 1.5KE47CA/54, SMAJ47CA offers compactness at reduced surge capacity, while 1.5SMC47CA matches power but demands SMT reflow and different thermal management - neither is pin-compatible, and both require validation of clamping margin and layout parasitics in high-speed or high-current paths.
Availability
1.5KE47CA/54 is available at Aetrix Electronics and suitable for automotive power distribution, industrial sensor interface, telecom line card protection, and consumer power adapter input applications requiring stable component supply and long-lifecycle support.
Supply support for 1.5KE47CA/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 designs discrete semiconductors for high-reliability power, protection, and sensing applications, with global manufacturing and AEC-Q101 qualification capabilities.
The 1.5KE series targets robust transient suppression in harsh environments - engineered for automotive, industrial, and telecom infrastructure where sustained surge immunity and thermal stability are mandatory.
FAQ
What is the breakdown voltage tolerance for 1.5KE47CA/54?
The 1.5KE47CA/54 has a specified breakdown voltage range of 44.7 V to 49.4 V at 1 mA test current, representing a ±5% tolerance around the nominal 47 V rating. This tight VBR window ensures consistent clamping onset across production lots and supports predictable system-level surge margin analysis in designs using 1.5KE47CA/54.
Is 1.5KE47CA/54 RoHS compliant and halogen-free?
Yes, 1.5KE47CA/54 carries the E3 suffix, indicating full RoHS compliance per Directive 2011/65/EU and halogen-free status per IEC 61249-2-21. The molding compound meets UL 94 V-0 flammability rating, and matte tin-plated leads satisfy J-STD-002 solderability requirements - all confirmed in Vishay document 88301 revision 09-Aug-2022 for 1.5KE47CA/54.
How does the bidirectional nature of 1.5KE47CA/54 affect PCB layout?
The bidirectional architecture of 1.5KE47CA/54 eliminates polarity concerns: either lead can connect to line or return, simplifying layout in AC-coupled or floating circuits. No band marking is present, and thermal vias or copper pours may be applied symmetrically to both leads - unlike unidirectional TVS diodes, 1.5KE47CA/54 requires no orientation check during placement or inspection.
What is the maximum clamping voltage of 1.5KE47CA/54 under surge conditions?
The maximum clamping voltage (VC) of 1.5KE47CA/54 is 64.8 V, measured at its peak pulse current (IPPM) of 23.1 A under the standard 10/1000 µs waveform. This value defines the upper voltage limit imposed on protected circuitry during worst-case transient events and is critical for verifying safe operating margins of downstream components in systems using 1.5KE47CA/54.
Can 1.5KE47CA/54 be used in parallel for higher surge current handling?
Yes, 1.5KE47CA/54 may be paralleled to increase total IPPM capacity, but matching VBR (44.7–49.4 V) between units is essential to ensure balanced current sharing. Layout symmetry, equal trace lengths, and shared thermal mass are required; Vishay recommends derating total power by 15% per additional device. Parallel use is documented in application notes for 1.5KE47CA/54 in multi-kW surge scenarios.
1.5KE47CA/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):
- 40.2V
- Voltage - Breakdown (Min):
- 44.7V
- Voltage - Clamping (Max) @ Ipp:
- 64.8V
- Current - Peak Pulse (10/1000µs):
- 23.1A
- 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
1.5KE47CA/54 FAQ
1.How can I place an order for 1.5KE47CA/54 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5KE47CA/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 1.5KE47CA/54 reliable?
The price and inventory of 1.5KE47CA/54 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5KE47CA/54 is usually 5 days.
3.What payment methods are accepted for 1.5KE47CA/54?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5KE47CA/54 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5KE47CA/54?
1.5KE47CA/54 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5KE47CA/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 1.5KE47CA/54?
For technical support, including 1.5KE47CA/54 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5KE47CA/54 requirements.
6.How does Aetrix verify that 1.5KE47CA/54 is sourced from the original manufacturer or authorized distributors?
All 1.5KE47CA/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 1.5KE47CA/54 meets industry standards.
7.What is the process for return or replacement of 1.5KE47CA/54?
All 1.5KE47CA/54 units undergo pre-shipment inspection (PSI). If there is an issue with 1.5KE47CA/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 1.5KE47CA/54 part is unused and in its original packaging.
Return procedure for 1.5KE47CA/54:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5KE47CA/54 Tags
-
ESD9B5.0ST5G
onsemi
-
DESD3V3E1BL-7B
Diodes Incorporated
-
ESD5Z3.3T1G
onsemi
-
D5V0H1B2LP-7B
Diodes Incorporated
-
D5V0P1B2LP-7B
Diodes Incorporated
-
DESD5V0U1BA-7
Diodes Incorporated
-
ESD5Z5.0T1G
onsemi
-
DESD5V0U1BB-7
Diodes Incorporated
-
D12V0L1B2LP-7B
Diodes Incorporated
-
PESD2V0Y1BSFYL
Nexperia USA Inc.
-
DF2S5M4CT,L3F
Toshiba Semiconductor and Storage
-
D5V0L1B2WS-7
Diodes Incorporated
Tech Hub
Comparator circuit design covering voltage thresholds, input limits, open-collector outputs, LM393 wiring, op-amp differences, hysteresis, timing, window detection and practical fault diagnosis.
Schmitt triggers use separate rising and falling thresholds to stabilize slow or noisy signals. This guide covers hysteresis, 74HC14 and 74HCT14 selection, comparator calculations, RC oscillators and p…
Counterfeit components can hide behind convincing markings and passing basic function tests. This engineering reference covers source traceability, external inspection, X-ray, XRF, electrical testing, …
A practical engineering and sourcing framework covering lifecycle verification, lifetime-buy calculations, replacement qualification, supplier checks and counterfeit-risk controls.
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
