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Vishay General Semiconductor - Diodes Division 1.5SMC56CAHM3_A/H
- Part No.:
- 1.5SMC56CAHM3_A/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
1.5SMC56CAHM3_A/H.pdf
- Description:
- TVS DIODE 47.8VWM 77VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:3,398
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Product details
Overview
1.5SMC56CAHM3_A/H from Vishay General Semiconductor is a bidirectional transient voltage suppressor (TVS) diode designed for robust overvoltage protection in power and signal lines. It features a 56 V standoff voltage (VWM), 64.6–71.4 V breakdown voltage (VBR) at 1 mA, 1500 W peak pulse power (10/1000 µs), clamping voltage of 92.0 V at 16.3 A, and operates across –65 °C to +150 °C. It is used to protect automotive sensor interfaces and industrial I/O circuits against lightning-induced transients and inductive switching surges.
For engineers reviewing the 1.5SMC56CAHM3_A/H datasheet, 1.5SMC56CAHM3_A/H pinout, 1.5SMC56CAHM3_A/H application, or 1.5SMC56CAHM3_A/H equivalent, key selection criteria include bidirectional clamping capability, AEC-Q101 qualification, SMC (DO-214AB) package compatibility, and verified 1500 W surge handling per JEDEC-standard 10/1000 µs waveform.
Technical Context
The 1.5SMC56CAHM3_A/H employs a glass-passivated silicon junction optimized for fast response (<1 ns) and low dynamic impedance under surge conditions. Its bidirectional architecture enables symmetrical clamping in AC-coupled or floating signal paths without polarity constraints.
It delivers 1500 W peak pulse power with a 10/1000 µs waveform at 0.01% duty cycle, supported by thermal resistance of 75 °C/W (junction-to-ambient) and 15 °C/W (junction-to-leads). The device meets MSL Level 1 per J-STD-020 and is halogen-free, RoHS-compliant, and AEC-Q101 qualified for automotive use.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 56 V - Maximum continuous reverse voltage before significant leakage; defines operating margin below clamping threshold. |
| VBR (Breakdown Voltage) | 64.6–71.4 V at 1 mA - Confirmed avalanche onset range; ensures reliable triggering during transients. |
| VC (Clamping Voltage) | 92.0 V at 16.3 A - Peak voltage seen by protected circuit during 10/1000 µs surge; determines downstream component stress. |
| PPPM (Peak Pulse Power) | 1500 W - Sustained energy absorption capacity per JEDEC 10/1000 µs waveform; critical for lightning and EFT immunity. |
| TJ max. | +150 °C - Maximum junction temperature; enables operation in under-hood automotive and high-ambient industrial environments. |
| Package | SMC (DO-214AB) - Surface-mount outline with 8.0 mm × 8.0 mm copper pad requirement; supports automated placement and reflow. |
| AEC-Q101 Qualified | Yes - Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD; suffix HM3 denotes halogen-free compliance. |
Pinout & Package
Package: SMC (DO-214AB), molded plastic case with matte tin-plated leads, UL 94 V-0 rated, dimensions 7.75 mm × 6.22 mm × 2.62 mm (L × W × H).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry terminal in forward bias; common node in bidirectional configuration | No polarity marking; symmetric terminals enable AC line protection without orientation dependency. |
| Cathode | Current exit terminal in forward bias; common node in bidirectional configuration | Identical physical terminal as Anode; bidirectional operation eliminates cathode band marking per spec. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables protection of AC-coupled or floating differential buses (e.g., CAN, RS-485) without external polarity management. |
| 1500 W peak pulse rating | Meets IEC 61000-4-5 Level 4 (4 kV surge) requirements when properly mounted on 8 mm × 8 mm copper pads. |
| AEC-Q101 qualification | Validated for automotive powertrain and body electronics; supports long-term deployment in harsh thermal/vibration environments. |
| Low incremental surge resistance | Minimizes clamping voltage overshoot during fast-rising transients (e.g., ISO 7637-2 pulse 1/2a), improving system-level immunity. |
| MSL Level 1 moisture sensitivity | Allows unlimited floor life and standard reflow profiles up to 260 °C peak, simplifying manufacturing integration. |
Applications
| Automotive Sensor Interface Protection | Industrial PLC Analog Input Protection |
|---|---|
Use Scenario: Protecting 12 V supply and signal lines of wheel speed sensors and pressure transducers exposed to load dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Bidirectional TVS placed at connector entry point to clamp transients before reaching ASIC or signal conditioner. Use Value: Prevents latch-up or permanent damage to precision analog front-ends while maintaining <100 ns response time. |
Use Scenario: Safeguarding 4–20 mA current loop inputs in programmable logic controllers subjected to field wiring surges and ESD events. IC Role / Device Role / Timing Role: Primary overvoltage clamp on input terminals, coordinated with series current-limiting resistor and filtering capacitors. Use Value: Ensures uninterrupted operation during 1 kV/500 A surge tests per IEC 61000-4-5, preserving measurement integrity. |
| Telecom Line Card Surge Suppression | Consumer Appliance Motor Drive Protection |
Use Scenario: Shielding Ethernet PHY interface and auxiliary power rails in DSL/Cable modem line cards from lightning-induced common-mode surges. IC Role / Device Role / Timing Role: Secondary-level TVS deployed after gas discharge tube (GDT) primary protection to limit let-through voltage. Use Value: Reduces clamped voltage to <92 V, enabling use of 100 V-rated Ethernet magnetics and DC-DC converters. |
Use Scenario: Protecting microcontroller GPIOs and gate drivers in washing machine motor control boards from back-EMF spikes during brushless motor commutation. IC Role / Device Role / Timing Role: Localized TVS at MOSFET source/drain nodes and MCU reset line to absorb repetitive inductive kickback. Use Value: Eliminates need for external snubbers in cost-sensitive white goods, reducing BOM count and board space. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ58CA | Lower peak power (600 W), same 58 V VWM, SMB package (smaller footprint, higher RθJA = 110 °C/W) | Not AEC-Q101 qualified; suitable for commercial-grade consumer or telecom, not automotive under-hood | Select when board space is constrained and surge energy is ≤600 W; verify thermal derating at elevated ambient. |
| 1.5KE56CA | Same 56 V VWM and 1500 W rating, but through-hole DO-201AE package; no AEC-Q101 qualification | Lacks surface-mount compatibility and automotive reliability validation; requires wave soldering | Choose only for legacy through-hole designs where rework to SMD is impractical; avoid for new automotive or high-volume SMT production. |
Compared with SMBJ58CA and 1.5KE56CA, the 1.5SMC56CAHM3_A/H uniquely combines AEC-Q101 qualification, SMC surface-mount compatibility, and full 1500 W surge capability-making it the only option qualified for next-generation automotive sensor modules requiring zero layout change and guaranteed lifetime reliability.
Availability
1.5SMC56CAHM3_A/H is available at Aetrix Electronics and suitable for automotive sensor systems, industrial PLC I/O modules, telecom line card protection, and appliance motor drive circuits requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for 1.5SMC56CAHM3_A/H 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, and protection devices with emphasis on reliability, efficiency, and application-specific optimization.
The 1.5SMC Series was developed to deliver high-power, surface-mount TVS solutions for automotive, industrial, and telecom applications demanding AEC-Q101 compliance, low-profile packaging, and repeatable clamping performance under repetitive surge stress.
FAQ
What is the clamping voltage of the 1.5SMC56CAHM3_A/H at its rated peak pulse current?
The 1.5SMC56CAHM3_A/H has a maximum clamping voltage (VC) of 92.0 V at 16.3 A peak pulse current (IPPM), measured under the standardized 10/1000 µs waveform. This value defines the upper voltage limit imposed on protected circuitry during surge events and is confirmed in the Vishay 88303 datasheet Table on page 2. The 1.5SMC56CAHM3_A/H maintains this clamping performance across its full operating temperature range.
Is the 1.5SMC56CAHM3_A/H suitable for automotive applications?
Yes, the 1.5SMC56CAHM3_A/H is AEC-Q101 qualified and carries the HM3 suffix indicating halogen-free, RoHS-compliant construction validated for automotive use. It is specifically rated for under-hood and body electronics applications subject to temperature cycling, humidity, and mechanical shock. The 1.5SMC56CAHM3_A/H meets all stress test requirements defined in the AEC-Q101 standard, including HTGB, HTRB, and TCT.
What does the "CA" suffix indicate in 1.5SMC56CAHM3_A/H?
The "CA" suffix in 1.5SMC56CAHM3_A/H denotes a bidirectional configuration, meaning the device provides symmetrical transient suppression in both polarities-ideal for AC signal lines, differential buses, or ungrounded power rails. Unlike unidirectional variants (e.g., 1.5SMC56AHM3_A/H), the 1.5SMC56CAHM3_A/H has no cathode band marking and exhibits identical VBR and VC characteristics in either direction.
What PCB layout guidance applies to the 1.5SMC56CAHM3_A/H for optimal surge performance?
For full 1500 W surge capability, the 1.5SMC56CAHM3_A/H must be mounted on minimum 0.31" × 0.31" (8.0 mm × 8.0 mm) copper pads per terminal, as specified in the Vishay 88303 datasheet. Smaller pads reduce heat dissipation and cause premature thermal failure during repetitive surges. The 1.5SMC56CAHM3_A/H also requires short, low-inductance traces to the protected node to preserve sub-nanosecond response time.
How does the 1.5SMC56CAHM3_A/H compare to unidirectional versions like 1.5SMC56AHM3_A/H?
The 1.5SMC56CAHM3_A/H differs from unidirectional 1.5SMC56AHM3_A/H solely in polarity configuration: it clamps equally in both directions, while the unidirectional version protects only reverse-biased junctions and requires correct cathode orientation. Both share identical VWM (56 V), VBR (64.6–71.4 V), VC (92.0 V), PPPM (1500 W), and AEC-Q101 qualification. The 1.5SMC56CAHM3_A/H is preferred for floating or AC-coupled lines; the unidirectional variant suits DC power rails with defined ground reference.
1.5SMC56CAHM3_A/H 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):
- 47.8V
- Voltage - Breakdown (Min):
- 53.2V
- Voltage - Clamping (Max) @ Ipp:
- 77V
- Current - Peak Pulse (10/1000µs):
- 19.5A
- Power - Peak Pulse:
- 1500W (1.5kW)
- Power Line Protection:
- No
- Applications:
- Telecom
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -65°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AB (SMC)
1.5SMC56CAHM3_A/H FAQ
1.How can I place an order for 1.5SMC56CAHM3_A/H through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5SMC56CAHM3_A/H 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 1.5SMC56CAHM3_A/H reliable?
The price and inventory of 1.5SMC56CAHM3_A/H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5SMC56CAHM3_A/H is usually 5 days.
3.What payment methods are accepted for 1.5SMC56CAHM3_A/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5SMC56CAHM3_A/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5SMC56CAHM3_A/H?
1.5SMC56CAHM3_A/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5SMC56CAHM3_A/H 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 1.5SMC56CAHM3_A/H?
For technical support, including 1.5SMC56CAHM3_A/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5SMC56CAHM3_A/H requirements.
6.How does Aetrix verify that 1.5SMC56CAHM3_A/H is sourced from the original manufacturer or authorized distributors?
All 1.5SMC56CAHM3_A/H 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 1.5SMC56CAHM3_A/H meets industry standards.
7.What is the process for return or replacement of 1.5SMC56CAHM3_A/H?
All 1.5SMC56CAHM3_A/H units undergo pre-shipment inspection (PSI). If there is an issue with 1.5SMC56CAHM3_A/H, 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 1.5SMC56CAHM3_A/H part is unused and in its original packaging.
Return procedure for 1.5SMC56CAHM3_A/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5SMC56CAHM3_A/H Tags
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