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Vishay General Semiconductor - Diodes Division 1.5SMC15CAHE3_A/I
- Part No.:
- 1.5SMC15CAHE3_A/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
1.5SMC15CAHE3_A/I.pdf
- Description:
- TVS DIODE 12.8VWM 21.2VC SMC
- Quantity:
- Payment:
- Shipping:
Inventory:6,834
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Product details
Overview
1.5SMC15CAHE3_A/I from Vishay General Semiconductor is a bidirectional surface-mount Transient Voltage Suppressor (TVS) diode in the SMC (DO-214AB) package, designed for clamping voltage transients on signal or power lines. It features a 15 V standoff voltage (VWM), 17.1 V minimum breakdown voltage (VBR), 21.2 V maximum clamping voltage at 70.8 A peak pulse current, and 1500 W peak pulse power capability with a 10/1000 μs waveform - used in automotive sensor protection and industrial I/O interface surge suppression.
For engineers reviewing the 1.5SMC15CAHE3_A/I datasheet, 1.5SMC15CAHE3_A/I pinout, 1.5SMC15CAHE3_A/I application, or 1.5SMC15CAHE3_A/I equivalent, key selection criteria include bidirectional clamping performance, AEC-Q101 qualification, thermal resistance (RθJA = 75 °C/W), and compatibility with automated SMT assembly on standard PCB pad layouts.
Technical Context
This device operates as a voltage-clamping protector with symmetrical reverse/forward conduction behavior due to its bidirectional structure. It responds within <1 ns to transient overvoltages and maintains low incremental surge resistance to limit let-through energy during ESD or lightning-induced surges.
Rated for operation from –65 °C to +150 °C junction temperature, it delivers 1500 W peak pulse power under standardized 10/1000 μs waveform conditions when mounted on 8.0 mm × 8.0 mm copper pads, and meets J-STD-020 MSL Level 1 with 260 °C reflow peak temperature tolerance.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 12.8 V - Maximum continuous reverse operating voltage before significant leakage; defines safe operating margin below clamping threshold. |
| VBR (Breakdown Voltage) | 14.3–15.8 V at 1 mA test current - Voltage at which device enters avalanche conduction; ensures predictable turn-on during transients. |
| VC (Clamping Voltage) | 21.2 V at 70.8 A IPPM - Peak voltage seen by protected circuit during worst-case 10/1000 μs surge; determines downstream component stress. |
| PPPM (Peak Pulse Power) | 1500 W - Maximum transient energy absorption capacity per single pulse; enables robust protection against IEC 61000-4-5 Level 4 surges. |
| ID (Reverse Leakage) | 1.0 μA at VWM - Ultra-low leakage preserves signal integrity and minimizes standby power loss in high-impedance circuits. |
| TJ max. | +150 °C - Maximum junction temperature rating supports reliable operation in under-hood automotive and industrial environments. |
| AEC-Q101 Qualified | Yes - Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing per AEC specification. |
Pinout & Package
Package: SMC (DO-214AB), surface-mount, molded plastic case with matte tin-plated leads; meets UL 94 V-0 flammability rating and JESD 201 Class 2 whisker resistance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry terminal in forward bias; symmetrical with cathode in bidirectional operation | No polarity marking required; terminals are functionally interchangeable for AC or differential line protection. |
| Cathode | Current exit terminal in forward bias; symmetrical with anode in bidirectional operation | Device conducts identically in both directions - essential for protecting balanced interfaces like RS-485 or CAN bus stubs. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC-coupled or differential signal paths without polarity concerns - reduces BOM count vs. dual unidirectional TVS. |
| 1500 W peak pulse power | Supports IEC 61000-4-5 surge immunity up to 4 kV (line-to-earth) with minimal derating on standard PCB copper areas. |
| AEC-Q101 qualification | Validates suitability for automotive applications including engine control modules, ADAS sensor interfaces, and body electronics. |
| Low profile SMC package | 0.320" height enables compact layout in space-constrained modules while maintaining thermal performance via exposed leadframe. |
| MSL Level 1 moisture sensitivity | Allows unlimited floor life and standard reflow profiles up to 260 °C - eliminates baking requirements and simplifies manufacturing. |
Applications
| Automotive Sensor Protection | Industrial I/O Interface |
|---|---|
Use Scenario: Protecting analog output lines of pressure or temperature sensors in engine bay environments subject to load dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Bidirectional voltage clamp placed between sensor output and microcontroller ADC input. Use Value: Limits transient voltage to ≤21.2 V during 1500 W surges, preventing ADC saturation and preserving measurement accuracy. |
Use Scenario: Shielding RS-485 transceiver pins in programmable logic controllers exposed to field wiring surges. IC Role / Device Role / Timing Role: Line-side TVS on differential A/B bus lines to absorb common-mode transients before they reach the transceiver. Use Value: Maintains signal integrity under 10/1000 μs surges up to 4 kV while adding <0.5 pF parasitic capacitance at 0 V bias. |
| Consumer USB Port Protection | Telecom DSL Line Protection |
Use Scenario: Safeguarding USB 2.0 D+/D− lines in set-top boxes against ESD events from user contact. IC Role / Device Role / Timing Role: Bidirectional TVS placed directly at USB connector to shunt ESD current before IC-level protection. Use Value: Responds in <1 ns to ±15 kV contact discharge (IEC 61000-4-2), clamping to ≤21.2 V and limiting energy delivered to PHY. |
Use Scenario: Front-end protection of ADSL/VDSL line drivers connected to outside plant wiring susceptible to lightning-induced surges. IC Role / Device Role / Timing Role: Primary surge suppressor on twisted-pair line inputs upstream of transformer and line driver IC. Use Value: Absorbs 1500 W peak pulse energy per line pair while maintaining 12.8 V DC operating margin for low-voltage line drivers. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ15CA | Same VWM (12.8 V) and VC (21.2 V), but lower PPPM (600 W); SMB package (smaller footprint, higher RθJA = 90 °C/W) | Limited to lower-energy transients (e.g., IEC 61000-4-2 ESD only); unsuitable for IEC 61000-4-5 surge testing | Select when board space is constrained and surge threat level is limited to ESD or low-energy switching noise. |
| 1.5KE15CA | Same electrical specs but axial-leaded DO-201 package; no SMT compatibility; higher mounting inductance limits high-frequency response | Requires through-hole assembly; not suitable for automated SMT production or high-speed transient suppression | Choose only for prototyping or legacy through-hole designs where rework flexibility outweighs performance and manufacturability trade-offs. |
Compared with SMBJ15CA and 1.5KE15CA, the 1.5SMC15CAHE3_A/I delivers superior surge handling (1500 W vs. 600 W or axial-limited pulse response), AEC-Q101 qualification for automotive use, and optimized SMT manufacturability - making it the preferred choice for production-grade industrial and automotive systems requiring repeatable, high-reliability transient protection.
Availability
1.5SMC15CAHE3_A/I is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial RS-485 networks, and consumer USB port protection requiring stable component supply and long-term lifecycle support.
Supply support for 1.5SMC15CAHE3_A/I 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, efficiency, and application-specific optimization.
The 1.5SMC Series was developed to deliver high-power, surface-mount transient suppression for automotive, industrial, and telecom systems where AEC-Q101 compliance, low-profile packaging, and repeatable clamping performance are critical design requirements.
FAQ
What does the "CA" suffix indicate in 1.5SMC15CAHE3_A/I?
The "CA" suffix in 1.5SMC15CAHE3_A/I denotes a bidirectional configuration - meaning the device provides symmetrical clamping in both polarities, ideal for protecting AC-coupled or differential signal lines such as RS-485, CAN, or USB without regard to voltage polarity. This differs from "A"-suffixed unidirectional variants that require correct cathode orientation.
Is 1.5SMC15CAHE3_A/I qualified for automotive applications?
Yes, 1.5SMC15CAHE3_A/I is AEC-Q101 qualified, as confirmed by Vishay's documentation and ordering code "HE3" (RoHS-compliant + AEC-Q101). It undergoes rigorous stress testing including temperature cycling, highly accelerated life testing (HALT), and ESD validation - making it suitable for under-hood and chassis-mounted automotive electronics.
What is the clamping voltage of 1.5SMC15CAHE3_A/I at its rated peak pulse current?
The 1.5SMC15CAHE3_A/I has a maximum clamping voltage (VC) of 21.2 V at its rated peak pulse current (IPPM) of 70.8 A, measured using the standard 10/1000 μs double-exponential waveform. This value defines the upper voltage limit imposed on protected circuitry during worst-case surge events.
How does the SMC (DO-214AB) package of 1.5SMC15CAHE3_A/I compare thermally to smaller packages like SMB?
The SMC package of 1.5SMC15CAHE3_A/I offers lower thermal resistance than SMB: typical RθJA is 75 °C/W versus ~90 °C/W for SMBJ devices. This enables higher sustained power dissipation and better reliability under repeated surge conditions - especially important in automotive and industrial environments with elevated ambient temperatures.
Can 1.5SMC15CAHE3_A/I be used in place of a unidirectional TVS like 1.5SMC15AHE3_A/I?
No - 1.5SMC15CAHE3_A/I is bidirectional and lacks polarity marking, while 1.5SMC15AHE3_A/I is unidirectional with a defined cathode band. Substituting them requires verifying circuit topology: bidirectional use is mandatory for AC or differential signals, whereas unidirectional types are needed for DC power rail protection where reverse blocking is required.
1.5SMC15CAHE3_A/I 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):
- 12.8V
- Voltage - Breakdown (Min):
- 14.3V
- Voltage - Clamping (Max) @ Ipp:
- 21.2V
- Current - Peak Pulse (10/1000µs):
- 70.8A
- Power - Peak Pulse:
- 1500W (1.5kW)
- Power Line Protection:
- No
- Applications:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -65°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AB (SMCJ)
1.5SMC15CAHE3_A/I FAQ
1.How can I place an order for 1.5SMC15CAHE3_A/I through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5SMC15CAHE3_A/I 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 1.5SMC15CAHE3_A/I reliable?
The price and inventory of 1.5SMC15CAHE3_A/I are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5SMC15CAHE3_A/I is usually 5 days.
3.What payment methods are accepted for 1.5SMC15CAHE3_A/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5SMC15CAHE3_A/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5SMC15CAHE3_A/I?
1.5SMC15CAHE3_A/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5SMC15CAHE3_A/I 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 1.5SMC15CAHE3_A/I?
For technical support, including 1.5SMC15CAHE3_A/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5SMC15CAHE3_A/I requirements.
6.How does Aetrix verify that 1.5SMC15CAHE3_A/I is sourced from the original manufacturer or authorized distributors?
All 1.5SMC15CAHE3_A/I 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 1.5SMC15CAHE3_A/I meets industry standards.
7.What is the process for return or replacement of 1.5SMC15CAHE3_A/I?
All 1.5SMC15CAHE3_A/I units undergo pre-shipment inspection (PSI). If there is an issue with 1.5SMC15CAHE3_A/I, 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 1.5SMC15CAHE3_A/I part is unused and in its original packaging.
Return procedure for 1.5SMC15CAHE3_A/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5SMC15CAHE3_A/I Tags
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Diodes Incorporated
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Toshiba Semiconductor and Storage
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