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Vishay General Semiconductor - Diodes Division 1.5KE300CA-E3/54
- Part No.:
- 1.5KE300CA-E3/54
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-201AA, DO-27, Axial
- Datasheet:
-
1.5KE300CA-E3/54.pdf
- Description:
- TVS DIODE 256VWM 414VC 1.5KE
- Quantity:
- Payment:
- Shipping:
Inventory:9,854
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Product details
Overview
1.5KE300CA-E3/54 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 300 V standoff voltage (VWM), 344 A peak pulse current (IPPM), 414 V clamping voltage (VC) at rated surge, and 1500 W peak pulse power (PPPM) with 10/1000 µs waveform - deployed to safeguard MOSFETs, ICs, and sensor interfaces against lightning-induced transients and inductive switching spikes in industrial and automotive systems.
For engineers reviewing the 1.5KE300CA-E3/54 datasheet, 1.5KE300CA-E3/54 pinout, 1.5KE300CA-E3/54 application, or 1.5KE300CA-E3/54 equivalent, this device serves as a robust, glass-passivated, RoHS-compliant TVS solution requiring no polarity marking, validated for bidirectional clamping up to 220 V breakdown range, with thermal resistance RθJL = 15.4 °C/W and operating junction temperature up to +175 °C.
Technical Context
This bidirectional TVS operates symmetrically across both polarities, delivering identical clamping behavior in forward and reverse directions per JEDEC standards. Its silicon avalanche structure enables sub-nanosecond response time (<1 ns), low incremental surge resistance, and stable clamping under repetitive 0.01% duty cycle surges.
The device uses a molded epoxy case (Case Style 1.5KE) with matte tin-plated leads compliant to J-STD-002 and JESD 22-B102, rated for solder dip at 275 °C for 10 s, and meets UL 94 V-0 flammability. It is commercial-grade only (not AEC-Q101 qualified), consistent with the 1.5KE250A–1.5KE540A series limitation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 256 V - maximum continuous reverse working voltage before clamping initiates |
| VBR min/max | 285 V / 315 V - guaranteed breakdown voltage range at 1 mA test current, defining turn-on threshold |
| VC @ IPPM | 414 V - clamped voltage during 3.6 A (10/1000 µs) surge, limiting downstream voltage stress |
| PPPM | 1500 W - peak transient energy absorption capability, enabling protection against IEC 61000-4-5 Level 4 surges |
| IPPM | 3.6 A - peak pulse current corresponding to VC, used to size PCB trace and layout for surge path |
| TJ max | +175 °C - maximum junction temperature, supporting operation in under-hood automotive or high-ambient industrial environments |
| RθJL | 15.4 °C/W - low junction-to-lead thermal resistance, allowing effective heat dissipation through PCB copper pours or heatsinked leads |
Pinout & Package
Package: Case Style 1.5KE - axial-leaded, molded epoxy body (0.375" lead length), UL 94 V-0 rated, with matte tin-plated leads. No polarity marking required for bidirectional operation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (symmetrical) | Bidirectional avalanche junction | Identical clamping in both directions; either lead may connect to line or return - no cathode band or polarity identifier |
Key Features
| Feature | Design Value |
|---|---|
| Glass passivated junction | Enhances long-term reliability and moisture resistance vs. non-passivated alternatives, critical for outdoor or humid environments |
| 1500 W peak pulse power | Supports robust protection against severe transients including lightning surges (IEC 61000-4-5) without degradation over rated cycles |
| <1 ns response time | Clamps before sensitive downstream components (e.g., MCU I/O, gate drivers) experience overvoltage damage |
| RoHS-compliant E3 suffix | Meets JESD 201 Class 1A whisker test and global environmental compliance requirements for commercial electronics |
| Low incremental surge resistance | Minimizes voltage overshoot during fast-rising transients, improving clamping precision and system-level immunity |
Applications
| Industrial Motor Drives | Automotive Power Distribution |
|---|---|
Use Scenario: Protection of gate driver inputs and DC bus sensing circuits against commutation spikes and load dump transients in variable-frequency drives. IC Role / Device Role / Timing Role: Bidirectional TVS placed across power rails or signal lines to clamp ±414 V surges within nanoseconds. Use Value: Prevents latch-up or permanent failure of isolated gate drivers (e.g., Si823x) and shunt-based current sensors exposed to >1 kV transients. | Use Scenario: Surge suppression on 12 V/24 V battery-fed modules (BCM, lighting control) subjected to ISO 7637-2 pulse 1, 2a, and 5a. IC Role / Device Role / Timing Role: Standoff-rated (256 V) TVS absorbing 1500 W pulses while maintaining low leakage (<1 µA) during normal operation. Use Value: Eliminates need for additional RC snubbers or varistors, reducing BOM count and board space in compact junction boxes. |
| Telecom Power Feeds | Industrial Sensor Interfaces |
Use Scenario: Protection of PoE-powered equipment (e.g., IP cameras, access points) against induced surges on Ethernet pairs and DC input lines. IC Role / Device Role / Timing Role: Bidirectional clamping element placed at primary-side DC input and secondary-side data line terminations. Use Value: Withstands repeated 10/1000 µs surges up to 3.6 A without parameter drift, ensuring multi-year field reliability in outdoor deployments. | Use Scenario: Shielding analog and digital sensor outputs (e.g., pressure, temperature, current) in factory automation PLC I/O modules. IC Role / Device Role / Timing Role: Low-capacitance TVS (typ. <100 pF) suppressing ESD and fast transients without distorting 0–10 V or 4–20 mA signals. Use Value: Maintains signal integrity while providing >30 kV HBM ESD immunity and sub-1 ns response to protect ADC front-ends and isolators. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ300CA | Lower PPPM (600 W), smaller SMB package (vs. axial 1.5KE), higher VBR tolerance (±5% vs. ±10%), lower IPPM (1.45 A) | Best suited for space-constrained PCBs where 600 W rating suffices; not suitable for legacy through-hole layouts or high-reliability 1500 W surge requirements | Select when footprint reduction and automated assembly are prioritized over peak power handling |
| 1.5SMC300CA | Same 1500 W rating and VWM (256 V), but SMC package (DO-214AB); slightly higher VC (430 V), same bidirectional function | Compatible with surface-mount production; requires rework of pad layout and thermal relief design due to different thermal path and mounting method | Choose for modern SMT lines where axial leaded parts are excluded, accepting minor clamping voltage trade-off |
Compared with 1.5KE300CA-E3/54, SMBJ300CA offers compactness at reduced surge capacity, while 1.5SMC300CA preserves full 1500 W performance in an SMT form - neither is pin-compatible due to differing packages (axial vs. SMB vs. SMC), requiring mechanical and thermal redesign.
Availability
1.5KE300CA-E3/54 is available at Aetrix Electronics and suitable for industrial motor drives, automotive power distribution modules, and telecom power feeds requiring stable component supply, long-lifecycle support, and RoHS-compliant surge protection.
Supply support for 1.5KE300CA-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, rectifiers, TVS devices, and optoelectronics with emphasis on reliability, power handling, and application-specific qualification.
The 1.5KE family was engineered for high-energy transient suppression in harsh environments - targeting industrial controls, transportation systems, and infrastructure equipment where sustained surge immunity and thermal stability are critical.
FAQ
What is the clamping voltage of the 1.5KE300CA-E3/54 under maximum rated surge conditions?
The 1.5KE300CA-E3/54 exhibits a maximum clamping voltage (VC) of 414 V when subjected to its rated peak pulse current of 3.6 A using the standard 10/1000 µs waveform. This value is measured per JEDEC test conditions and ensures predictable overvoltage limiting for downstream circuitry - critical for protecting 300 V-rated capacitors or 400 V MOSFETs in DC-link applications.
Is the 1.5KE300CA-E3/54 suitable for automotive applications requiring AEC-Q101 qualification?
No, the 1.5KE300CA-E3/54 is commercial-grade only and not AEC-Q101 qualified. Per Vishay documentation, AEC-Q101 qualification applies only to 1.5KE6.8CAHE3_B through 1.5KE220CAHE3_B variants. For automotive use, engineers must select the HE3-suffixed qualified versions - the 1.5KE300CA-E3/54 lacks the required stress testing and traceability for under-hood deployment.
How does the bidirectional nature of the 1.5KE300CA-E3/54 affect PCB layout and polarity marking?
The 1.5KE300CA-E3/54 has no polarity marking - its symmetrical bidirectional structure means either lead can be connected to line or return without functional impact. PCB layout requires no orientation constraint, simplifying placement and eliminating risk of reverse installation. This contrasts with unidirectional 1.5KE300A variants, which require cathode-band alignment per schematic polarity.
What is the thermal resistance from junction to lead (RθJL) for the 1.5KE300CA-E3/54, and why does it matter?
The 1.5KE300CA-E3/54 has a typical junction-to-lead thermal resistance (RθJL) of 15.4 °C/W. This low value enables efficient heat transfer from the silicon junction to the PCB copper or external heatsink via the leads - essential for sustaining repetitive surge events without exceeding the +175 °C maximum junction temperature, especially in enclosed or high-ambient environments.
Can the 1.5KE300CA-E3/54 be used in parallel to increase surge current handling?
Yes, the 1.5KE300CA-E3/54 may be paralleled to increase total peak pulse current capacity, but only with careful attention to matching VBR tolerances (±10%) and symmetrical PCB trace lengths to ensure current sharing. Vishay's application notes confirm this practice for scaling beyond 3.6 A, though derating and thermal coupling between devices must be modeled to avoid localized overheating or premature failure.
1.5KE300CA-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):
- 256V
- Voltage - Breakdown (Min):
- 285V
- Voltage - Clamping (Max) @ Ipp:
- 414V
- Current - Peak Pulse (10/1000µs):
- 3.6A
- 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
1.5KE300CA-E3/54 FAQ
1.How can I place an order for 1.5KE300CA-E3/54 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5KE300CA-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 1.5KE300CA-E3/54 reliable?
The price and inventory of 1.5KE300CA-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 1.5KE300CA-E3/54 is usually 5 days.
3.What payment methods are accepted for 1.5KE300CA-E3/54?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5KE300CA-E3/54 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5KE300CA-E3/54?
1.5KE300CA-E3/54 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5KE300CA-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 1.5KE300CA-E3/54?
For technical support, including 1.5KE300CA-E3/54 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5KE300CA-E3/54 requirements.
6.How does Aetrix verify that 1.5KE300CA-E3/54 is sourced from the original manufacturer or authorized distributors?
All 1.5KE300CA-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 1.5KE300CA-E3/54 meets industry standards.
7.What is the process for return or replacement of 1.5KE300CA-E3/54?
All 1.5KE300CA-E3/54 units undergo pre-shipment inspection (PSI). If there is an issue with 1.5KE300CA-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 1.5KE300CA-E3/54 part is unused and in its original packaging.
Return procedure for 1.5KE300CA-E3/54:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5KE300CA-E3/54 Tags
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ESD9B5.0ST5G
onsemi
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DESD3V3E1BL-7B
Diodes Incorporated
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onsemi
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Diodes Incorporated
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D5V0P1B2LP-7B
Diodes Incorporated
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DESD5V0U1BA-7
Diodes Incorporated
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ESD5Z5.0T1G
onsemi
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DESD5V0U1BB-7
Diodes Incorporated
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D12V0L1B2LP-7B
Diodes Incorporated
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PESD2V0Y1BSFYL
Nexperia USA Inc.
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DF2S5M4CT,L3F
Toshiba Semiconductor and Storage
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Diodes Incorporated
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