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Vishay General Semiconductor - Diodes Division 1.5SMC56CAHM3_A/I
- Part No.:
- 1.5SMC56CAHM3_A/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
1.5SMC56CAHM3_A/I.pdf
- Description:
- TVS DIODE 47.8VWM 77VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:9,043
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Product details
Overview
1.5SMC56CAHM3_A/I from Vishay General Semiconductor is a bidirectional transient voltage suppressor (TVS) diode designed for robust ESD and surge protection in power and signal lines. It features a 56 V standoff voltage (VWM), 62.7 V minimum breakdown voltage (VBR), 1500 W peak pulse power (10/1000 μs), clamping voltage of 92.0 V at 19.5 A, and operates across –65 °C to +150 °C. It is used in automotive sensor interfaces, industrial I/O ports, and telecom line protection.
For engineers reviewing the 1.5SMC56CAHM3_A/I datasheet, 1.5SMC56CAHM3_A/I pinout, 1.5SMC56CAHM3_A/I application, or 1.5SMC56CAHM3_A/I equivalent, key selection criteria include bidirectional clamping capability, AEC-Q101 qualification, SMC (DO-214AB) package compatibility, and compliance with IEC 61000-4-2/4-5 surge immunity standards.
Technical Context
This device functions as a voltage-clamped shunt protector that activates when transient voltage exceeds its breakdown threshold, diverting surge current away from downstream circuitry. Its glass-passivated junction ensures stable avalanche characteristics and low leakage (<1.0 μA at 47.8 V), while the bidirectional architecture enables symmetric protection on AC-coupled or floating lines without polarity concerns.
The 1.5SMC56CAHM3_A/I delivers 1500 W peak pulse power under standardized 10/1000 μs waveform conditions, with thermal resistance of 75 °C/W (junction-to-ambient) and 15 °C/W (junction-to-leads). It meets J-STD-020 MSL Level 1 and is halogen-free, RoHS-compliant, and qualified to AEC-Q101 for automotive-grade reliability.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 47.8 V - Maximum continuous reverse operating voltage before clamping initiates; defines safe DC/AC working range. |
| VBR (Breakdown Voltage) | 53.2–58.8 V at 1 mA - Confirmed avalanche onset range; ensures predictable turn-on during transients. |
| VC (Clamping Voltage) | 92.0 V at 19.5 A - Peak voltage seen by protected circuit during full-rated 1500 W surge; critical for IC survivability. |
| PPPM (Peak Pulse Power) | 1500 W (10/1000 μs) - Surge energy handling capacity; supports IEC 61000-4-5 Level 4 (4 kV) compliance with proper layout. |
| TJ max. | +150 °C - Maximum junction temperature; enables operation in under-hood automotive or high-ambient industrial environments. |
| Package | SMC (DO-214AB) - Standardized surface-mount outline with 8.0 mm × 8.0 mm copper pad requirement; compatible with automated placement and reflow. |
| AEC-Q101 Qualified | Yes - Validated for automotive applications per stress test requirements including HTOL, TC, UHAST, and ESD; suffix HM3 denotes halogen-free variant. |
Pinout & Package
Package: SMC (DO-214AB), surface-mount, bidirectional configuration with no polarity marking. Terminals are matte tin-plated leads, solderable per J-STD-002 and JESD 22-B102. Mounting requires 0.31" × 0.31" (8.0 mm × 8.0 mm) copper pads per terminal.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Transient current entry (bidirectional) | One terminal of symmetrical PN junction; accepts surge current in either direction during overvoltage events. |
| Cathode | Transient current exit (bidirectional) | Second terminal of symmetrical PN junction; completes low-impedance path to ground or return rail during clamping. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables protection on AC, differential, or floating lines without external polarity management or series components. |
| 1500 W peak pulse rating | Supports high-energy surges per IEC 61000-4-5; reduces need for cascaded protection stages in industrial and automotive designs. |
| AEC-Q101 qualification (HM3) | Validated for automotive electronics including engine control modules, ADAS sensors, and body control units requiring long-term reliability. |
| Low incremental surge resistance | Minimizes clamping voltage overshoot during fast-rising transients (e.g., ESD, inductive switching), improving system-level immunity. |
| Halogen-free & RoHS-compliant | Meets environmental compliance mandates for global OEM supply chains and end-of-life recycling requirements. |
Applications
| Automotive Sensor Interface | Industrial Digital I/O Protection |
|---|---|
Use Scenario: Protecting CAN/FlexRay or analog sensor lines (e.g., pressure, temperature) from load dump and ISO 7637-2 pulses in vehicle ECUs. IC Role / Device Role / Timing Role: Shunt-type transient suppressor placed at connector entry point, clamping surges before reaching signal conditioning amplifiers or microcontroller inputs. Use Value: Maintains signal integrity under 12 V/24 V system transients up to ±100 V; AEC-Q101 qualification ensures 15-year field reliability in harsh under-hood environments. |
Use Scenario: Safeguarding PLC digital input modules against induced lightning surges and relay contact bounce on 24 V DC field wiring. IC Role / Device Role / Timing Role: Primary front-end TVS on each channel, operating in parallel with optocoupler input stage to limit voltage to safe levels before isolation barrier. Use Value: Clamps 1500 W surges to ≤92 V within nanoseconds, preventing latch-up or permanent damage to input logic circuits and enabling CE/UL 61000-4-5 compliance. |
| Telecom Line Interface | Consumer USB/Display Port ESD Protection |
Use Scenario: Protecting Ethernet PHY or RS-485 transceivers connected to outdoor cabling exposed to indirect lightning strikes. IC Role / Device Role / Timing Role: Secondary-level surge protector mounted adjacent to connector, coordinated with gas discharge tube (GDT) primary stage. Use Value: Provides precise clamping at 92.0 V with <1 ns response time, limiting let-through energy to transceiver ICs rated for ≤100 V absolute maximum ratings. |
Use Scenario: Board-level ESD protection for USB 2.0 data lines or DisplayPort auxiliary channels in laptops and docking stations. IC Role / Device Role / Timing Role: Low-capacitance bidirectional TVS placed directly at connector, shunting HBM ±8 kV and CDM ±1 kV discharges. Use Value: Delivers sub-100 pF junction capacitance (typical) and <1 ns response, preserving signal integrity while meeting IEC 61000-4-2 Level 4 (±15 kV air) requirements. |
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 VWM (47.8 V), SMB package (smaller footprint, higher RθJA) | Best suited for space-constrained consumer PCBs where 600 W surge margin is sufficient | Select when board area is limited and surge threat level is moderate (IEC 61000-4-2 only, not 4-5) |
| 1.5KE56CA | Higher power (1500 W), through-hole DO-201 package, longer lead inductance, no AEC-Q101 qualification | Used in legacy industrial power supplies where manual assembly and lower cost outweigh surface-mount advantages | Choose for cost-sensitive, non-automotive applications where reflow compatibility and automotive qualification are not required |
Compared with SMBJ58CA and 1.5KE56CA, the 1.5SMC56CAHM3_A/I uniquely combines AEC-Q101 qualification, SMC surface-mount compatibility, and full 1500 W surge rating-making it the preferred choice for new automotive and high-reliability industrial designs requiring zero-layout compromise and long-term supply assurance.
Availability
1.5SMC56CAHM3_A/I is available at Aetrix Electronics and suitable for automotive sensor modules, industrial PLC I/O cards, and telecom line interface boards requiring stable component supply, long-lifecycle support, and AEC-Q101-compliant surge protection.
Supply support for 1.5SMC56CAHM3_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 for high-power, surface-mount transient suppression in automotive, industrial, and telecom infrastructure-delivering consistent clamping performance and AEC-Q101 validation in the rugged SMC package.
FAQ
What is the clamping voltage of the 1.5SMC56CAHM3_A/I at its rated peak pulse current?
The 1.5SMC56CAHM3_A/I has a maximum clamping voltage (VC) of 92.0 V at 19.5 A peak pulse current, measured under the standard 10/1000 μs waveform. This value defines the upper voltage limit imposed on protected circuitry during a full 1500 W transient event and is confirmed in the Vishay 88303 datasheet Table on page 2.
Is the 1.5SMC56CAHM3_A/I suitable for automotive applications?
Yes, the 1.5SMC56CAHM3_A/I is AEC-Q101 qualified (suffix HM3 denotes halogen-free, RoHS-compliant, and automotive-grade version) and tested for HTOL, temperature cycling, and ESD robustness. It is explicitly recommended for engine control units, ADAS sensor interfaces, and body electronics where sustained reliability under thermal and electrical stress is mandatory.
What does the "CA" suffix indicate in 1.5SMC56CAHM3_A/I?
The "CA" suffix in 1.5SMC56CAHM3_A/I designates a bidirectional configuration - meaning the device provides symmetrical transient suppression in both polarities, with identical VBR, VC, and IPPM characteristics regardless of voltage polarity. This eliminates the need for polarity-aware layout and supports AC-coupled or floating signal lines.
What is the thermal resistance of the 1.5SMC56CAHM3_A/I, and how does it affect PCB layout?
The 1.5SMC56CAHM3_A/I has a typical junction-to-ambient thermal resistance (RθJA) of 75 °C/W and junction-to-leads (RθJL) of 15 °C/W. To maintain safe operation at full power, the datasheet mandates mounting on 0.31" × 0.31" (8.0 mm × 8.0 mm) copper pads per terminal - underscoring the necessity of adequate copper pour and thermal relief design in layout.
How does the 1.5SMC56CAHM3_A/I compare to unidirectional variants like 1.5SMC56AHM3_A/I?
The 1.5SMC56CAHM3_A/I differs from unidirectional 1.5SMC56AHM3_A/I solely in polarity configuration: the "CA" version provides symmetrical bidirectional clamping, while the "A" version protects only in reverse bias and conducts forward current like a rectifier. Both share identical VWM (47.8 V), VBR (53.2–58.8 V), VC (92.0 V), and AEC-Q101 qualification - selection depends strictly on circuit topology and signal polarity requirements.
1.5SMC56CAHM3_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):
- 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/I FAQ
1.How can I place an order for 1.5SMC56CAHM3_A/I through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5SMC56CAHM3_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 1.5SMC56CAHM3_A/I reliable?
The price and inventory of 1.5SMC56CAHM3_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 1.5SMC56CAHM3_A/I is usually 5 days.
3.What payment methods are accepted for 1.5SMC56CAHM3_A/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5SMC56CAHM3_A/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5SMC56CAHM3_A/I?
1.5SMC56CAHM3_A/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5SMC56CAHM3_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 1.5SMC56CAHM3_A/I?
For technical support, including 1.5SMC56CAHM3_A/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5SMC56CAHM3_A/I requirements.
6.How does Aetrix verify that 1.5SMC56CAHM3_A/I is sourced from the original manufacturer or authorized distributors?
All 1.5SMC56CAHM3_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 1.5SMC56CAHM3_A/I meets industry standards.
7.What is the process for return or replacement of 1.5SMC56CAHM3_A/I?
All 1.5SMC56CAHM3_A/I units undergo pre-shipment inspection (PSI). If there is an issue with 1.5SMC56CAHM3_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 1.5SMC56CAHM3_A/I part is unused and in its original packaging.
Return procedure for 1.5SMC56CAHM3_A/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5SMC56CAHM3_A/I Tags
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