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Vishay General Semiconductor - Diodes Division 1.5KE30CA-E3/51
- Part No.:
- 1.5KE30CA-E3/51
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-201AA, DO-27, Axial
- Datasheet:
-
1.5KE30CA-E3/51.pdf
- Description:
- TVS DIODE 25.6VWM 41.4VC 1.5KE
- Quantity:
- Payment:
- Shipping:
Inventory:4,779
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Product details
Overview
1.5KE30CA-E3/51 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 30 V breakdown voltage (VBR = 28.5–31.5 V), 1500 W peak pulse power (10/1000 µs), clamping voltage of 41.4 V at 36.2 A, and operates across –55 °C to +175 °C. It is used to protect MOSFETs, ICs, and sensor interfaces against lightning-induced transients and inductive switching surges.
For engineers reviewing the 1.5KE30CA-E3/51 datasheet, 1.5KE30CA-E3/51 pinout, 1.5KE30CA-E3/51 application, or 1.5KE30CA-E3/51 equivalent, this page delivers verified electrical specs, JEDEC 1.5KE package details, bidirectional clamping behavior, thermal derating curves, and RoHS-compliant commercial-grade sourcing support at Aetrix Electronics.
Technical Context
This TVS diode uses a glass-passivated silicon junction optimized for fast response (<1 ns) and low incremental surge resistance. Its bidirectional architecture enables symmetrical clamping in both polarities without polarity marking, making it suitable for AC-coupled or floating signal lines.
It complies with JEDEC standard test conditions (10/1000 µs waveform, 0.01% duty cycle), supports 1500 W non-repetitive pulse dissipation, and exhibits a temperature coefficient of VBR of +0.097 %/°C - critical for stable clamping across automotive and industrial ambient ranges.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 28.5 V / 31.5 V - ensures reliable conduction onset above normal operating voltage while avoiding false triggering |
| VWM | 25.6 V - maximum continuous reverse working voltage before leakage exceeds 1 µA |
| VC @ IPPM | 41.4 V - clamped voltage during 36.2 A transient, defining worst-case stress on protected circuitry |
| PPPM | 1500 W - peak pulse power handling capability under standardized 10/1000 µs surge waveform |
| IPPM | 36.2 A - maximum non-repetitive peak pulse current supported at rated clamping voltage |
| TJ max | +175 °C - high-temperature junction rating enabling use in under-hood automotive and industrial power supplies |
| Package | JEDEC DO-201AD (Case Style 1.5KE) - axial-leaded, epoxy-molded package with UL 94 V-0 flammability rating |
Pinout & Package
Package: JEDEC DO-201AD (Case Style 1.5KE), axial-leaded, molded epoxy body with matte tin-plated leads compliant with J-STD-002 and JESD 22-B102 solderability standards. No polarity marking - bidirectional operation confirmed per datasheet.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (symmetrical) | Transient current path | Both terminals serve identical clamping roles; no cathode band - device functions identically in either orientation |
Key Features
| Feature | Design Value |
|---|---|
| Glass passivated junction | Enables stable, low-leakage performance and long-term reliability under repeated surge stress |
| 1500 W peak pulse power (10/1000 µs) | Supports high-energy transients common in industrial motor drives and telecom line interfaces |
| Clamping time <1 ns | Protects nanosecond-scale logic and high-speed analog circuits before damage occurs |
| RoHS-compliant E3 suffix | Meets JESD 201 Class 1A whisker resistance and UL 94 V-0 flammability requirements |
| –55 °C to +175 °C operating range | Validated for under-hood automotive, railway, and wide-temperature industrial environments |
Applications
| Automotive Sensor Protection | Industrial PLC I/O Protection |
|---|---|
Use Scenario: Protecting CAN bus transceivers and analog sensor inputs (e.g., pressure, temperature) from load dump and ESD events in vehicle ECUs. IC Role / Device Role / Timing Role: Bidirectional voltage clamp placed across differential signal pair or supply rail to shunt surge energy before reaching sensitive front-end circuitry. Use Value: Clamps transients to ≤41.4 V while maintaining 25.6 V working margin - preserving signal integrity and preventing latch-up in 3.3 V/5 V sensor interfaces. | Use Scenario: Safeguarding digital input modules in programmable logic controllers exposed to relay coil flyback and field wiring surges. IC Role / Device Role / Timing Role: Standoff protector on 24 V DC input channels, absorbing repetitive 1500 W pulses without degradation. Use Value: Withstands ≥1000 surges at rated power per JEDEC life testing - extends maintenance intervals and reduces field failure rates. |
| Telecom Line Interface | Consumer Power Adapter Surge Suppression |
Use Scenario: Secondary-side transient suppression on Ethernet PHY power rails and data lines in PoE-powered switches. IC Role / Device Role / Timing Role: Fast-acting bidirectional clamp limiting induced lightning surges (per R.E.A. P.E. 60) on isolated 48 V supply paths. Use Value: 41.4 V clamping voltage ensures downstream DC-DC converters remain within absolute maximum ratings during 8/20 µs line surges. | Use Scenario: Input-stage protection in AC-DC adapters for smart home devices subjected to mains-borne transients per IEC 61000-4-5 Level 3. IC Role / Device Role / Timing Role: Primary-side TVS across bridge rectifier output to suppress switching spikes and external surges. Use Value: 1500 W rating handles 2 kV/1 kA combination wave surges without failure - meets EN 61000-4-5 compliance margin. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ33CA | Lower peak power (600 W), smaller SMB package (surface-mount), lower IPPM (33.3 A), same VBR range (31.4–34.7 V) | Better suited for space-constrained PCBs but less robust for high-energy industrial surges | Select when board area is limited and surge energy remains below 600 W; not drop-in due to package and power mismatch |
| 1.5SMC33CA | Same 1500 W rating and DO-214AB package, slightly higher VBR (31.4–34.7 V), higher VC (53.3 V), SMC footprint | Surface-mount alternative with identical power handling but different thermal path and layout requirements | Choose for automated assembly where through-hole mounting is impractical; requires PCB redesign |
Compared with 1.5KE30CA-E3/51, SMBJ33CA offers compactness at reduced surge capacity, while 1.5SMC33CA matches power but demands SMT rework - neither is pin-compatible, and all three differ in thermal resistance (RθJA = 75 °C/W vs. ~100 °C/W for SMBJ, ~50 °C/W for SMC), directly impacting sustained surge duty cycle capability.
Availability
1.5KE30CA-E3/51 is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial PLC I/O modules, telecom line protection, and consumer power adapter designs requiring stable component supply and full traceability.
Supply support for 1.5KE30CA-E3/51 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 applications where robustness, temperature stability, and repeatable clamping performance are mandatory.
FAQ
What is the breakdown voltage tolerance for 1.5KE30CA-E3/51?
The 1.5KE30CA-E3/51 has a specified breakdown voltage range of 28.5 V to 31.5 V at 1.0 mA test current, representing ±10% tolerance around the nominal 30 V rating. This tight VBR window ensures consistent clamping onset across production lots and supports predictable system-level surge margin design without over-engineering downstream protection.
Is 1.5KE30CA-E3/51 RoHS compliant and lead-free?
Yes, the 1.5KE30CA-E3/51 carries the E3 suffix, indicating full RoHS compliance per Directive 2011/65/EU and exemption 6(c)-IV. Its matte tin-plated leads meet J-STD-002 solderability requirements and JESD 201 Class 1A whisker resistance testing - confirming suitability for lead-free reflow and long-term reliability in commercial-grade applications.
Does 1.5KE30CA-E3/51 have AEC-Q101 qualification?
No, the 1.5KE30CA-E3/51 is a commercial-grade part (E3 suffix). AEC-Q101 qualification applies only to variants with the HE3 suffix (e.g., 1.5KE30CAHE3_B), which are explicitly listed in the datasheet as qualified for automotive use. Engineers requiring automotive qualification must select the HE3 variant - the E3 version lacks the required stress test documentation and process controls.
What is the maximum clamping voltage of 1.5KE30CA-E3/51 under surge conditions?
The maximum clamping voltage (VC) of 1.5KE30CA-E3/51 is 41.4 V at 36.2 A peak pulse current (IPPM) using the standardized 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 that downstream components remain within their absolute maximum voltage ratings.
Can 1.5KE30CA-E3/51 be used in bidirectional AC signal lines?
Yes, 1.5KE30CA-E3/51 is explicitly designed for bidirectional applications - its CA suffix denotes symmetrical clamping characteristics in both polarities, with identical VBR, VC, and IPPM values regardless of voltage polarity. It requires no polarity marking and is routinely deployed across AC-coupled sensor outputs, RS-485 buses, and transformer-isolated power rails where voltage reversals occur.
1.5KE30CA-E3/51 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-201AA, DO-27, Axial
- Series:
- TransZorb®
- Packaging:
- Bag
- Product Status:
- Obsolete
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 25.6V
- Voltage - Breakdown (Min):
- 28.5V
- Voltage - Clamping (Max) @ Ipp:
- 41.4V
- Current - Peak Pulse (10/1000µs):
- 36.2A
- 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
1.5KE30CA-E3/51 FAQ
1.How can I place an order for 1.5KE30CA-E3/51 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5KE30CA-E3/51 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 1.5KE30CA-E3/51 reliable?
The price and inventory of 1.5KE30CA-E3/51 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5KE30CA-E3/51 is usually 5 days.
3.What payment methods are accepted for 1.5KE30CA-E3/51?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5KE30CA-E3/51 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5KE30CA-E3/51?
1.5KE30CA-E3/51 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5KE30CA-E3/51 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 1.5KE30CA-E3/51?
For technical support, including 1.5KE30CA-E3/51 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5KE30CA-E3/51 requirements.
6.How does Aetrix verify that 1.5KE30CA-E3/51 is sourced from the original manufacturer or authorized distributors?
All 1.5KE30CA-E3/51 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 1.5KE30CA-E3/51 meets industry standards.
7.What is the process for return or replacement of 1.5KE30CA-E3/51?
All 1.5KE30CA-E3/51 units undergo pre-shipment inspection (PSI). If there is an issue with 1.5KE30CA-E3/51, 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 1.5KE30CA-E3/51 part is unused and in its original packaging.
Return procedure for 1.5KE30CA-E3/51:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5KE30CA-E3/51 Tags
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Diodes Incorporated
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Diodes Incorporated
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Toshiba Semiconductor and Storage
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Diodes Incorporated
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