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Vishay General Semiconductor - Diodes Division 1.5KE7.5CA-E3/51
- Part No.:
- 1.5KE7.5CA-E3/51
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-201AA, DO-27, Axial
- Datasheet:
-
1.5KE7.5CA-E3/51.pdf
- Description:
- TVS DIODE 6.4VWM 11.3VC 1.5KE
- Quantity:
- Payment:
- Shipping:
Inventory:4,391
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Product details
Overview
1.5KE7.5CA-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 7.13 V to 7.88 V breakdown voltage (VBR) at 10 mA, 6.40 V standoff voltage (VWM), 104 A peak pulse current (IPPM) under 10/1000 µs waveform, and clamps to ≤11.3 V at rated surge. It is used in automotive sensor interfaces, industrial I/O protection, and telecom line circuits where fast, high-energy transient suppression is required.
For engineers reviewing the 1.5KE7.5CA-E3/51 datasheet, 1.5KE7.5CA-E3/51 pinout, 1.5KE7.5CA-E3/51 application, or 1.5KE7.5CA-E3/51 equivalent, this device delivers verified 1500 W peak pulse power, bidirectional clamping symmetry, RoHS-compliant matte tin leads, and UL 94 V-0 molded epoxy packaging - critical for ESD/lightning surge hardening in safety-critical embedded systems.
Technical Context
This bidirectional TVS operates with symmetrical clamping in both polarities, enabling protection of AC-coupled or floating signal paths without polarity concerns. Its glass-passivated junction ensures stable VBR tolerance (±5%) and low incremental surge resistance, supporting consistent clamping performance across repeated transients.
The device complies with JEDEC standards for transient suppressors and meets JESD 201 Class 1A whisker testing. With a maximum junction temperature of +175 °C and thermal resistance RθJL = 15.4 °C/W, it sustains high-reliability operation in thermally constrained PCB layouts typical of automotive engine control units and industrial PLC modules.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 7.13 V / 7.88 V at 10 mA - defines precise clamping onset threshold for bidirectional surge events |
| VWM | 6.40 V - maximum continuous reverse working voltage before leakage exceeds 500 µA |
| IPPM | 104 A (10/1000 µs) - peak surge current handling capacity without degradation |
| VC @ IPPM | ≤11.3 V - clamped voltage during full-rated surge, limiting downstream IC stress |
| PPPM | 1500 W - peak pulse power rating confirming suitability for lightning-induced surges per IEC 61000-4-5 |
| TJ max. | +175 °C - enables deployment in under-hood automotive or high-ambient industrial environments |
| Package | Case Style 1.5KE - axial-leaded DO-201AD package with 0.375" lead length, UL 94 V-0 compliant |
Pinout & Package
1.5KE7.5CA-E3/51 uses a two-terminal axial-leaded DO-201AD (Case Style 1.5KE) package. As a bidirectional TVS, it has no polarity marking; both terminals are functionally identical and interchangeable in circuit placement.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (symmetrical) | Transient conduction path | Provides identical clamping behavior in either direction - eliminates orientation errors during assembly |
| Leads (matte tin plated) | Thermal and electrical interface | Solderable per J-STD-002/JESD 22-B102; supports 275 °C solder dip (10 s max) and JESD 201 Class 1A whisker resistance |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC signals, differential buses, or ungrounded lines without polarity constraints |
| 1500 W peak pulse power | Meets IEC 61000-4-5 Level 4 (4 kV) surge immunity requirements for industrial and automotive applications |
| Glass-passivated junction | Ensures long-term VBR stability and low leakage (<500 µA at VWM) across temperature and lifetime |
| UL 94 V-0 epoxy molding | Provides flame-retardant mechanical encapsulation essential for safety-certified end equipment |
| RoHS-compliant E3 suffix | Confirms lead-free matte tin plating and compliance with EU Directive 2011/65/EU and China RoHS |
Applications
| Automotive Sensor Protection | Industrial I/O Interface |
|---|---|
Use Scenario: Protecting CAN bus transceivers and analog sensor inputs (e.g., pressure, temperature) from load dump and ISO 7637-2 pulses in vehicle ECUs. IC Role / Device Role / Timing Role: Bidirectional voltage clamp placed across signal pair or supply rail to shunt transients before reaching sensitive analog front-ends. Use Value: Clamps 104 A surges to ≤11.3 V within <1 ns, preventing latch-up or gate oxide damage in 5 V/3.3 V sensor interface ICs. |
Use Scenario: Shielding programmable logic controller (PLC) digital input modules from induced surges on 24 V DC field wiring exposed to motor switching noise. IC Role / Device Role / Timing Role: Primary overvoltage clamp on input terminal blocks, operating in parallel with optocoupler input stages. Use Value: Absorbs 1500 W transient energy without degradation, maintaining system uptime in factory automation environments with frequent inductive load switching. |
| Telecom Line Protection | Consumer Power Adapter Input |
Use Scenario: Safeguarding Ethernet PHYs and DSL line drivers against lightning-induced surges on outdoor copper pairs per ITU-T K.20/K.21. IC Role / Device Role / Timing Role: First-stage protector on RJ-45 jack side, preceding gas discharge tube (GDT) and series impedance. Use Value: Fast sub-nanosecond response captures initial surge edge, reducing let-through voltage to secondary protectors and preserving PHY integrity. |
Use Scenario: Secondary surge suppression on AC-DC adapter primary-side rectifier output, complementing MOV-based front-end protection. IC Role / Device Role / Timing Role: Precision clamping element limiting voltage overshoot during fast line transients (e.g., capacitor discharge events). Use Value: Tight 7.13–7.88 V VBR range ensures reliable triggering before downstream capacitors or regulators exceed ratings. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ7.0CA | Lower PPPM (600 W), smaller SMB package (surface-mount), VBR = 7.78–8.60 V | Preferred for space-constrained PCBs; less suitable for high-energy lightning surges requiring 1500 W | Select when board area is limited and surge threat level is IEC 61000-4-5 Level 2 (1 kV) |
| 1.5KE7.5C | Same electrical specs and DO-201AD package, but lacks E3 RoHS/commercial-grade marking (non-RoHS legacy variant) | Acceptable only in non-RoHS markets or legacy rework; not compliant with EU/China environmental directives | Choose 1.5KE7.5CA-E3/51 for new designs requiring documented RoHS compliance and JESD 201 whisker resistance |
Compared with SMBJ7.0CA and 1.5KE7.5C, the 1.5KE7.5CA-E3/51 uniquely combines 1500 W surge capability, bidirectional symmetry, RoHS-compliant matte tin leads, and UL 94 V-0 packaging - making it the preferred choice for automotive, industrial, and telecom applications demanding certified reliability and regulatory compliance.
Availability
1.5KE7.5CA-E3/51 is available at Aetrix Electronics and suitable for automotive sensor protection, industrial I/O hardening, and telecom line surge suppression requiring stable component supply across multi-year production cycles.
Supply support for 1.5KE7.5CA-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 high-reliability diodes, MOSFETs, and passive components for automotive, industrial, and computing markets.
The 1.5KE series was engineered specifically for high-energy transient suppression in harsh environments, targeting applications where failure due to voltage spikes must be eliminated - including engine control, factory automation, and infrastructure communications.
FAQ
What is the breakdown voltage tolerance for 1.5KE7.5CA-E3/51?
The 1.5KE7.5CA-E3/51 has a specified breakdown voltage (VBR) range of 7.13 V to 7.88 V at 10 mA test current, representing a ±5% tolerance around the nominal 7.5 V rating. This tight tolerance ensures predictable clamping onset across production lots and temperature ranges, critical for protecting 5 V and 3.3 V logic interfaces without false triggering. The value is measured per JEDEC standard and confirmed in Vishay's 88301 datasheet revision 09-Aug-2022.
Is 1.5KE7.5CA-E3/51 suitable for automotive AEC-Q101 qualification?
No, the 1.5KE7.5CA-E3/51 is not AEC-Q101 qualified. Only variants with the HE3 suffix (e.g., 1.5KE7.5CAHE3_B) carry AEC-Q101 certification. The E3 suffix denotes RoHS-compliant commercial grade only. For automotive under-hood or safety-critical applications requiring AEC-Q101, engineers must select the HE3 version - the 1.5KE7.5CA-E3/51 remains appropriate for non-automotive industrial and telecom use cases where AEC-Q101 is not mandated.
How does the bidirectional nature of 1.5KE7.5CA-E3/51 affect its circuit placement?
The 1.5KE7.5CA-E3/51 has no polarity marking and functions identically in both directions, so it can be installed in either orientation across protected lines - such as differential pairs (RS-485, CAN), AC-coupled signals, or floating power rails. This eliminates assembly errors and simplifies layout compared to unidirectional TVS diodes, which require strict cathode/anode alignment. Its symmetric VBR and VC ensure equal clamping performance regardless of transient polarity.
What is the maximum clamping voltage of 1.5KE7.5CA-E3/51 at rated surge current?
The maximum clamping voltage (VC) of 1.5KE7.5CA-E3/51 is 11.3 V when subjected to its rated 104 A peak pulse current (IPPM) under the standard 10/1000 µs waveform. This value represents the upper limit of voltage seen by downstream circuitry during worst-case surge events and is critical for ensuring protected ICs remain below absolute maximum ratings. The clamping occurs within <1 ns, as confirmed by Vishay's transient response characterization.
Does 1.5KE7.5CA-E3/51 meet UL 94 flammability requirements?
Yes, the 1.5KE7.5CA-E3/51 uses a molded epoxy body that meets UL 94 V-0 flammability rating, as stated in Vishay document 88301. This certification confirms the package material self-extinguishes within 10 seconds after flame removal and produces no flaming drips - a mandatory requirement for safety approvals in industrial control panels, telecom cabinets, and consumer power supplies. The V-0 rating applies to the entire 1.5KE case style, including the 1.5KE7.5CA-E3/51 variant.
1.5KE7.5CA-E3/51 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-201AA, DO-27, Axial
- Series:
- TransZorb®
- Packaging:
- Bulk
- Product Status:
- Obsolete
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 6.4V
- Voltage - Breakdown (Min):
- 7.13V
- Voltage - Clamping (Max) @ Ipp:
- 11.3V
- Current - Peak Pulse (10/1000µs):
- 133A
- 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
1.5KE7.5CA-E3/51 FAQ
1.How can I place an order for 1.5KE7.5CA-E3/51 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5KE7.5CA-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 1.5KE7.5CA-E3/51 reliable?
The price and inventory of 1.5KE7.5CA-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 1.5KE7.5CA-E3/51 is usually 5 days.
3.What payment methods are accepted for 1.5KE7.5CA-E3/51?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5KE7.5CA-E3/51 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5KE7.5CA-E3/51?
1.5KE7.5CA-E3/51 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5KE7.5CA-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 1.5KE7.5CA-E3/51?
For technical support, including 1.5KE7.5CA-E3/51 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5KE7.5CA-E3/51 requirements.
6.How does Aetrix verify that 1.5KE7.5CA-E3/51 is sourced from the original manufacturer or authorized distributors?
All 1.5KE7.5CA-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 1.5KE7.5CA-E3/51 meets industry standards.
7.What is the process for return or replacement of 1.5KE7.5CA-E3/51?
All 1.5KE7.5CA-E3/51 units undergo pre-shipment inspection (PSI). If there is an issue with 1.5KE7.5CA-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 1.5KE7.5CA-E3/51 part is unused and in its original packaging.
Return procedure for 1.5KE7.5CA-E3/51:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5KE7.5CA-E3/51 Tags
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DESD3V3E1BL-7B
Diodes Incorporated
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Diodes Incorporated
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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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