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Vishay General Semiconductor - Diodes Division 1.5SMC10CA-E3/9AT
- Part No.:
- 1.5SMC10CA-E3/9AT
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
1.5SMC10CA-E3/9AT.pdf
- Description:
- TVS DIODE 8.55VWM 14.5VC SMC
- Quantity:
- Payment:
- Shipping:
Inventory:7,668
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Product details
Overview
1.5SMC10CA-E3/9AT from Vishay General Semiconductor is a bidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMC (DO-214AB) package, designed for high-energy surge protection. It features 10 V standoff voltage (VWM), 14.5 V clamping voltage (VC) at 103 A peak pulse current (IPPM), and 1500 W peak pulse power (PPPM) with 10/1000 μs waveform - deployed across automotive sensor lines, industrial I/O ports, and telecom interface protection.
For engineers reviewing the 1.5SMC10CA-E3/9AT datasheet, 1.5SMC10CA-E3/9AT pinout, 1.5SMC10CA-E3/9AT application, or 1.5SMC10CA-E3/9AT equivalent, key selection criteria include bidirectional clamping behavior, low incremental surge resistance, MSL Level 1 moisture sensitivity, RoHS-compliant matte tin plating, and compatibility with automated SMT placement on 8.0 mm × 8.0 mm copper pads.
Technical Context
This device operates as a voltage-clamped crowbar during transient events: when reverse (or forward, in bidirectional mode) voltage exceeds its breakdown threshold (~11.1 V min / ~12.3 V max at 1 mA), it avalanches to limit downstream voltage to ≤14.5 V at 103 A. Its glass-passivated junction ensures stable leakage (<10 μA at 8.55 V) and fast response time (<1.0 ns).
Thermally, it sustains 150 °C maximum junction temperature with RθJL = 15 °C/W and RθJA = 75 °C/W (on recommended pad layout). It meets AEC-Q101 qualification when ordered with HE3/HM3 suffixes - the -E3/9AT variant is commercial-grade RoHS-compliant with JESD201 Class 2 whisker resistance.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off) | 8.55 V - maximum continuous reverse operating voltage before conduction begins; defines safe signal line bias margin. |
| VBR (Breakdown) | 9.50–10.5 V at 1 mA - precise avalanche initiation range; ensures predictable clamping onset under transients. |
| VC (Clamping) | 14.5 V at IPPM = 103 A - peak voltage seen by protected circuit during 1500 W surge; critical for IC-level survivability. |
| PPPM | 1500 W - peak pulse power handling with 10/1000 μs waveform; supports lightning-induced surges per IEC 61000-4-5. |
| ID (Leakage) | ≤10 μA at VWM - minimal DC loading on signal paths; preserves accuracy in high-impedance sensor interfaces. |
| Package | SMC (DO-214AB) - industry-standard 2-pin surface-mount outline; compatible with IPC-7351B footprint and reflow profiles up to 260 °C. |
| Temperature Range | −65 °C to +150 °C - enables deployment in under-hood automotive, industrial PLC, and outdoor telecom environments. |
Pinout & Package
Package: SMC (DO-214AB), molded plastic case with matte tin-plated leads; polarity-unmarked for bidirectional operation; no cathode/anode designation required.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Transient current entry (positive half-cycle) | Conducts during positive-going surges; connects to line being protected (e.g., RS-485 A or CAN_H). |
| Cathode | Transient current entry (negative half-cycle) | Conducts during negative-going surges; connects to same protected line (bidirectional symmetry enables single-device dual-polarity suppression). |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC-coupled or differential signal lines (e.g., USB D+/D−, RS-485) without polarity concerns. |
| 1500 W peak pulse rating | Withstands 10/1000 μs surges up to 103 A - exceeds IEC 61000-4-5 Level 4 (4 kV) requirements for industrial equipment. |
| Low clamping ratio (VC/VBR ≈ 1.42) | Minimizes overvoltage stress on downstream silicon; critical for safeguarding 3.3 V or 5 V logic interfaces. |
| MSL Level 1, 260 °C peak reflow | Eliminates bake-out requirement prior to assembly; supports standard lead-free SMT processes without moisture damage risk. |
| Glass-passivated junction | Ensures long-term stability of breakdown voltage and leakage current across temperature and lifetime cycling. |
Applications
| Automotive Sensor Protection | Industrial I/O Port Protection |
|---|---|
Use Scenario: Protecting LIN bus or analog sensor outputs (e.g., pressure, temperature) from load-dump and ISO 7637-2 pulses in vehicle ECUs. IC Role / Device Role / Timing Role: Bidirectional TVS clamp placed between sensor output and microcontroller ADC input or LIN transceiver. Use Value: Limits transient voltage to ≤14.5 V, preventing latch-up or gate oxide damage in 5 V-tolerant automotive MCUs and analog front-ends. |
Use Scenario: Shielding 24 V digital input modules in PLCs from inductive kickback caused by solenoid or relay switching. IC Role / Device Role / Timing Role: Primary surge suppressor on field-side terminals, mounted directly at connector entry point. Use Value: Absorbs 1500 W surges without degradation, maintaining functional safety integrity and eliminating need for secondary protection stages. |
| Telecom Interface Protection | Consumer USB Port Protection |
Use Scenario: Safeguarding Ethernet PHY or xDSL line drivers against lightning-induced surges entering via RJ-45 jacks. IC Role / Device Role / Timing Role: Common-mode TVS on twisted-pair lines, used alongside common-mode chokes and data-line ESD diodes. Use Value: Clamps common-mode transients to <15 V while preserving signal integrity up to 100 MHz due to low junction capacitance (~150 pF at 0 V). |
Use Scenario: Adding robust surge immunity to USB 2.0 upstream ports in set-top boxes or smart displays exposed to user-handling ESD and cable-borne noise. IC Role / Device Role / Timing Role: Bidirectional clamp across D+ and D− lines, placed after series resistors and before USB transceiver. Use Value: Withstands repeated 10/1000 μs surges up to 103 A without parameter drift, extending product field life in uncontrolled environments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar bidirectional TVS diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ10CA | Lower PPPM (600 W), SMB package (smaller footprint, higher RθJA = 85 °C/W) | Suitable for space-constrained consumer PCBs where surge energy is limited to IEC 61000-4-2 contact discharge only. | Select when board area is critical and peak surge energy does not exceed 600 W; verify thermal derating at elevated ambient temperatures. |
| 1.5KE10CA | Through-hole DO-201 package, identical electrical specs but incompatible with SMT assembly and higher inductance. | Used in legacy industrial power supplies or repair scenarios where rework of existing through-hole designs is preferred. | Choose only for manual assembly or backward-compatible replacements; avoid in new SMT designs due to placement and reliability limitations. |
Compared with SMBJ10CA and 1.5KE10CA, the 1.5SMC10CA-E3/9AT delivers 2.5× higher surge power in an SMT-optimized package with superior thermal coupling to PCB copper, making it the preferred choice for new automotive and industrial designs requiring robust, automated, and scalable transient protection.
Availability
1.5SMC10CA-E3/9AT is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial PLC I/O modules, telecom line drivers, and consumer USB port protection requiring stable component supply, full traceability, and long-term lifecycle support.
Supply support for 1.5SMC10CA-E3/9AT 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, MOSFETs, and protection devices with emphasis on reliability, power efficiency, and automotive-grade qualification.
The 1.5SMC Series targets high-energy transient suppression in harsh environments, engineered for rapid response, stable clamping, and seamless integration into automated SMT production lines across automotive, industrial, and communications systems.
FAQ
What is the clamping voltage of the 1.5SMC10CA-E3/9AT under maximum rated surge current?
The 1.5SMC10CA-E3/9AT exhibits a maximum clamping voltage (VC) of 14.5 V when subjected to its rated peak pulse current (IPPM) of 103 A using the standard 10/1000 μs waveform. This value is measured per Figure 1 in Vishay document 88303 and defines the upper voltage limit imposed on protected circuits during worst-case surge events - critical for ensuring compatibility with 3.3 V or 5 V logic interfaces downstream of the 1.5SMC10CA-E3/9AT.
Is the 1.5SMC10CA-E3/9AT suitable for automotive applications?
The 1.5SMC10CA-E3/9AT itself is commercial-grade (RoHS-compliant E3 suffix), not AEC-Q101 qualified. However, Vishay offers functionally identical variants - 1.5SMC10CAHE3_A and 1.5SMC10CAHM3_A - which carry AEC-Q101 qualification for automotive use. For automotive designs requiring qualification, specify the HE3 or HM3 suffix; the 1.5SMC10CA-E3/9AT remains appropriate for non-automotive industrial or telecom applications where AEC-Q101 is not mandated.
How does the bidirectional configuration of the 1.5SMC10CA-E3/9AT affect its circuit placement?
The 1.5SMC10CA-E3/9AT has no polarity marking and conducts symmetrically in both directions, allowing direct placement across any two-node signal path without orientation constraints. In practice, it is mounted between the protected line (e.g., RS-485 A) and ground, or across differential pairs (e.g., CAN_H/CAN_L), simplifying layout and eliminating risk of reverse installation - a key advantage over unidirectional TVS diodes like 1.5SMC10A that require correct cathode alignment.
What is the maximum operating temperature for the 1.5SMC10CA-E3/9AT?
The 1.5SMC10CA-E3/9AT has a specified junction temperature range of −65 °C to +150 °C, with derating of peak pulse power beginning above TA = 25 °C per Figure 2 in the Vishay datasheet. At 100 °C ambient, its 1500 W PPPM rating reduces to approximately 750 W. This wide thermal envelope supports deployment in under-hood automotive locations, industrial enclosures, and outdoor telecom cabinets where ambient temperatures exceed 85 °C - provided PCB copper pad layout follows the 8.0 mm × 8.0 mm recommendation for optimal heat dissipation.
Does the 1.5SMC10CA-E3/9AT require a heatsink for standard operation?
No external heatsink is required for the 1.5SMC10CA-E3/9AT under typical transient conditions because its thermal design relies on PCB copper as the primary heat sink. The datasheet specifies thermal resistance values assuming mounting on 0.31″ × 0.31″ (8.0 mm × 8.0 mm) copper pads per terminal - this pad layout provides sufficient thermal mass and conduction path to dissipate energy from short-duration surges. Continuous power dissipation is limited to 6.5 W, but actual surge events are brief (microseconds), so steady-state heating is negligible; therefore, the 1.5SMC10CA-E3/9AT operates reliably without added heatsinking in compliant layouts.
1.5SMC10CA-E3/9AT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AB, SMC
- Series:
- 1.5SMC, TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 8.55V
- Voltage - Breakdown (Min):
- 9.5V
- Voltage - Clamping (Max) @ Ipp:
- 14.5V
- Current - Peak Pulse (10/1000µs):
- 103A
- Power - Peak Pulse:
- 1500W (1.5kW)
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -65°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AB (SMCJ)
1.5SMC10CA-E3/9AT FAQ
1.How can I place an order for 1.5SMC10CA-E3/9AT through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5SMC10CA-E3/9AT 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 1.5SMC10CA-E3/9AT reliable?
The price and inventory of 1.5SMC10CA-E3/9AT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5SMC10CA-E3/9AT is usually 5 days.
3.What payment methods are accepted for 1.5SMC10CA-E3/9AT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5SMC10CA-E3/9AT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5SMC10CA-E3/9AT?
1.5SMC10CA-E3/9AT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5SMC10CA-E3/9AT 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 1.5SMC10CA-E3/9AT?
For technical support, including 1.5SMC10CA-E3/9AT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5SMC10CA-E3/9AT requirements.
6.How does Aetrix verify that 1.5SMC10CA-E3/9AT is sourced from the original manufacturer or authorized distributors?
All 1.5SMC10CA-E3/9AT 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 1.5SMC10CA-E3/9AT meets industry standards.
7.What is the process for return or replacement of 1.5SMC10CA-E3/9AT?
All 1.5SMC10CA-E3/9AT units undergo pre-shipment inspection (PSI). If there is an issue with 1.5SMC10CA-E3/9AT, 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 1.5SMC10CA-E3/9AT part is unused and in its original packaging.
Return procedure for 1.5SMC10CA-E3/9AT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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