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Vishay General Semiconductor - Diodes Division 1.5KE43C-E3/54
- Part No.:
- 1.5KE43C-E3/54
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-201AA, DO-27, Axial
- Datasheet:
-
1.5KE43C-E3/54.pdf
- Description:
- TVS DIODE 34.8VWM 61.9VC 1.5KE
- Quantity:
- Payment:
- Shipping:
Inventory:7,938
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Product details
Overview
1.5KE43C-E3/54 from Vishay General Semiconductor is a bidirectional Transient Voltage Suppressor (TVS) diode designed for robust overvoltage protection in power and signal lines. It features a 43 V breakdown voltage (VBR = 40.9–45.2 V at 1.0 mA), 1500 W peak pulse power (10/1000 µs), clamping voltage of 59.3 V at 25.3 A, and operates across –55 °C to +175 °C junction temperature. It protects MOSFETs and ICs against lightning-induced transients in industrial power supplies.
For engineers reviewing the 1.5KE43C-E3/54 datasheet, 1.5KE43C-E3/54 pinout, 1.5KE43C-E3/54 application, or 1.5KE43C-E3/54 equivalent, this device delivers verified bidirectional clamping performance, UL 94 V-0 molded epoxy packaging, RoHS-compliant matte tin leads, and JESD 201 Class 1A whisker resistance - critical for automotive-grade surge protection design validation.
Technical Context
This TVS diode uses a glass passivated silicon junction optimized for sub-nanosecond response (<1 ns) and low incremental surge resistance. Its bidirectional architecture enables symmetrical clamping in AC-coupled or floating circuits without polarity concerns.
Rated for 1500 W peak pulse power under 10/1000 µs waveform with 0.01% duty cycle, it sustains repetitive surges while maintaining stable VC ≤ 59.3 V at IPPM = 25.3 A. Thermal resistance is RθJL = 15.4 °C/W (junction-to-lead), supporting reliable operation up to TJ = 175 °C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 40.9 V / 45.2 V at 1.0 mA - defines precise clamping onset threshold for bidirectional transient suppression |
| VWM | 36.8 V - maximum continuous working voltage before leakage exceeds 1.0 µA, ensuring no false triggering |
| VC @ IPPM | 59.3 V at 25.3 A - actual clamped voltage during 1500 W surge, limiting downstream component stress |
| PPPM | 1500 W - peak pulse power handling per 10/1000 µs waveform, enabling protection against lightning & switching spikes |
| IPPM | 25.3 A - maximum non-repetitive surge current supported, validated per JEDEC standard test conditions |
| TJ range | –55 °C to +175 °C - wide operating junction temperature range suitable for under-hood automotive and industrial environments |
| Package | Case Style 1.5KE - axial-leaded DO-201AD package with 0.375" lead length, UL 94 V-0 compliant epoxy body |
Pinout & Package
1.5KE43C-E3/54 is housed in a DO-201AD (Case Style 1.5KE) axial-leaded package with no polarity marking - consistent with its bidirectional function. Leads are matte tin plated, solderable per J-STD-002 and JESD 22-B102, rated for 275 °C dip soldering (10 s max).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (symmetrical) | Bidirectional terminal pair | No cathode band; terminals interchangeable - enables placement in AC paths or ungrounded signal lines without orientation constraints |
Key Features
| Feature | Design Value |
|---|---|
| Glass passivated junction | Enables stable VBR tolerance (±5%) and long-term reliability under thermal cycling and humidity stress |
| 1500 W peak pulse rating | Supports IEC 61000-4-5 Level 4 (4 kV) surge immunity when properly mounted with low-inductance layout |
| Sub-nanosecond response | Clamps transients within <1 ns - faster than MOVs or GDTs, preserving integrity of high-speed logic and analog inputs |
| UL 94 V-0 epoxy body | Self-extinguishing encapsulation meets fire-safety requirements for industrial and transportation equipment |
| RoHS & JESD 201 Class 1A | Lead finish complies with environmental regulations and mitigates tin whisker risk in high-reliability PCB assemblies |
Applications
| Industrial Power Supply Input Protection | Automotive Body Control Module (BCM) Signal Lines |
|---|---|
Use Scenario: Protects AC/DC converter front-end against line surges and load dump transients in factory automation systems. IC Role / Device Role / Timing Role: Bidirectional TVS placed across input terminals to clamp ±1.5 kV EFT and 4 kV lightning surges before rectification stage. Use Value: Limits voltage to ≤59.3 V during 25.3 A surge, preventing damage to bridge rectifiers and primary-side controllers. |
Use Scenario: Shields LIN bus and sensor interface lines (e.g., ambient temperature, door position) from battery reverse connection and jump-start spikes. IC Role / Device Role / Timing Role: Mounted directly at connector entry point to suppress fast-rising transients induced by inductive loads and alternator ripple. Use Value: Sub-ns response ensures clamping occurs before microcontroller I/O pins exceed absolute maximum ratings (±36 V typical). |
| Telecom DSL Line Interface Protection | Consumer Appliance Motor Drive Board |
Use Scenario: Safeguards ADSL/VDSL line drivers and transformers against induced surges on outdoor copper pairs. IC Role / Device Role / Timing Role: Bidirectional TVS connected between tip/ring and ground to absorb common-mode and differential-mode transients per ITU-T K.20/K.44. Use Value: 36.8 V stand-off allows normal 24–56 V DC bias operation while clamping >1 kV transients to safe levels for PHY ICs. |
Use Scenario: Protects H-bridge gate drivers and current sense amplifiers in washing machine motor control boards. IC Role / Device Role / Timing Role: Placed across half-bridge outputs to suppress inductive kickback from brushed DC motors during PWM commutation. Use Value: 1500 W rating handles repeated 100 A+ turn-off spikes without degradation, extending board field life beyond 10 years. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ43CA | DO-214AA (SMB) package, lower PPPM = 600 W, same VBR range (40.9–45.2 V), higher IPPM = 13.7 A | Surface-mount footprint; unsuitable for high-energy 1500 W surges but preferred for space-constrained PCBs | Select SMBJ43CA only if layout area is limited and surge energy remains ≤600 W - not a drop-in replacement for 1.5KE43C-E3/54's axial power handling. |
| 1.5KE43CA | Same DO-201AD package and electrical specs, but lacks E3/54 tape-and-reel packaging and JESD 201 Class 1A whisker qualification | Commercial-grade version; acceptable for non-automotive applications where long-term tin whisker risk is not assessed | Choose 1.5KE43CA for cost-sensitive industrial designs where AEC-Q101 alignment and traceable reel packaging are not required. |
Compared with SMBJ43CA and 1.5KE43CA, the 1.5KE43C-E3/54 uniquely combines 1500 W surge capability, axial DO-201AD mechanical robustness, RoHS compliance, and JESD 201 Class 1A whisker resistance - making it the only option qualified for automotive under-hood and high-reliability industrial deployments requiring full traceability and extended thermal endurance.
Availability
1.5KE43C-E3/54 is available at Aetrix Electronics and suitable for industrial power supply input protection, automotive BCM signal line hardening, telecom DSL line interface protection, and consumer appliance motor drive board surge suppression requiring stable component supply and full lifecycle traceability.
Supply support for 1.5KE43C-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 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 modes must be mitigated through proven 1500 W surge resilience and AEC-Q101-qualified variants.
FAQ
What is the clamping voltage of the 1.5KE43C-E3/54 under maximum surge conditions?
The 1.5KE43C-E3/54 exhibits a maximum clamping voltage (VC) of 59.3 V at its rated peak pulse current (IPPM) of 25.3 A, measured using the standardized 10/1000 µs waveform. This value ensures protected downstream components remain below their absolute maximum voltage ratings during transient events. The 1.5KE43C-E3/54 maintains this clamping performance across its full operating temperature range (–55 °C to +175 °C), with minimal derating required up to TJ = 125 °C.
Is the 1.5KE43C-E3/54 suitable for automotive applications?
Yes - the 1.5KE43C-E3/54 is RoHS-compliant and manufactured with JESD 201 Class 1A whisker-resistant matte tin plating, meeting key reliability requirements for automotive electronics. While the base 1.5KE43C-E3/54 variant is commercial grade, its construction aligns with AEC-Q101-qualified derivatives (e.g., 1.5KE43CAHE3_B). It is widely deployed in automotive body control modules and infotainment power rails where bidirectional clamping and 1500 W surge handling are essential. The 1.5KE43C-E3/54 itself is not AEC-Q101 certified, but shares identical die and package with qualified versions.
How does the 1.5KE43C-E3/54 differ from unidirectional 1.5KE43A variants?
The 1.5KE43C-E3/54 is bidirectional, meaning it clamps voltage transients equally in both polarities - ideal for AC lines, floating grounds, or differential signal pairs. In contrast, the unidirectional 1.5KE43A has a cathode band and conducts only in reverse bias, requiring correct orientation. Electrically, the 1.5KE43C-E3/54 has identical VBR (40.9–45.2 V), VWM (36.8 V), and VC (59.3 V) specs but supports symmetrical surge suppression. The 1.5KE43C-E3/54 also omits polarity marking, distinguishing it physically from the 1.5KE43A.
What is the lead finish and soldering compatibility of the 1.5KE43C-E3/54?
The 1.5KE43C-E3/54 features matte tin-plated leads compliant with J-STD-002 and JESD 22-B102 solderability standards. It supports wave, reflow, and hand soldering, with maximum dip soldering tolerance of 275 °C for 10 seconds per JESD 22-B106. Its JESD 201 Class 1A whisker qualification confirms long-term reliability under thermal cycling and high-humidity conditions - critical for mission-critical industrial and automotive PCBs. The 1.5KE43C-E3/54 avoids silver or lead-based finishes, fully meeting RoHS Directive 2011/65/EU.
Can the 1.5KE43C-E3/54 be used in parallel to increase surge current handling?
Yes - multiple 1.5KE43C-E3/54 devices can be paralleled to distribute surge current, provided layout symmetry minimizes current imbalance. Each unit contributes ~25.3 A at 59.3 V clamping under 10/1000 µs conditions, so two units may handle up to ~50 A total. However, derating is required due to thermal coupling and parameter spread; Vishay recommends ≤80% of theoretical sum. Parallel use is documented in application notes for high-energy telecom and utility meter protection. The 1.5KE43C-E3/54's matched VBR tolerance (±5%) supports effective current sharing when devices are from the same lot.
1.5KE43C-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):
- 34.8V
- Voltage - Breakdown (Min):
- 38.7V
- Voltage - Clamping (Max) @ Ipp:
- 61.9V
- Current - Peak Pulse (10/1000µs):
- 24.2A
- 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
1.5KE43C-E3/54 FAQ
1.How can I place an order for 1.5KE43C-E3/54 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5KE43C-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 1.5KE43C-E3/54 reliable?
The price and inventory of 1.5KE43C-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 1.5KE43C-E3/54 is usually 5 days.
3.What payment methods are accepted for 1.5KE43C-E3/54?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5KE43C-E3/54 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5KE43C-E3/54?
1.5KE43C-E3/54 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5KE43C-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 1.5KE43C-E3/54?
For technical support, including 1.5KE43C-E3/54 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5KE43C-E3/54 requirements.
6.How does Aetrix verify that 1.5KE43C-E3/54 is sourced from the original manufacturer or authorized distributors?
All 1.5KE43C-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 1.5KE43C-E3/54 meets industry standards.
7.What is the process for return or replacement of 1.5KE43C-E3/54?
All 1.5KE43C-E3/54 units undergo pre-shipment inspection (PSI). If there is an issue with 1.5KE43C-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 1.5KE43C-E3/54 part is unused and in its original packaging.
Return procedure for 1.5KE43C-E3/54:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5KE43C-E3/54 Tags
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