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Vishay General Semiconductor - Diodes Division 1.5SMC56CAHM3/I
- Part No.:
- 1.5SMC56CAHM3/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
1.5SMC56CAHM3/I.pdf
- Description:
- TVS DIODE 47.8VWM 77VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:4,358
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Product details
Overview
1.5SMC56CAHM3/I 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), 62.2–68.8 V breakdown voltage (VBR) at 1 mA, 1500 W peak pulse power (10/1000 μs), clamping voltage of 93.6 V at 19.5 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 surges and inductive switching transients.
For engineers reviewing the 1.5SMC56CAHM3/I datasheet, 1.5SMC56CAHM3/I pinout, 1.5SMC56CAHM3/I application, or 1.5SMC56CAHM3/I equivalent, key selection criteria include bidirectional clamping capability, AEC-Q101 qualification, SMC (DO-214AB) package compatibility, and verified 1500 W surge handling under standardized 10/1000 μs waveform conditions.
Technical Context
This device functions as a voltage-clamped shunt protector: during transient events exceeding its breakdown threshold, it rapidly switches from high-impedance to low-impedance state, diverting surge current away from downstream circuitry. Its bidirectional symmetry ensures identical clamping behavior for positive and negative polarity transients.
It employs a glass-passivated silicon junction with low incremental surge resistance and fast response time (<1 ns), enabling effective suppression of ESD, EFT, and lightning-surge waveforms. The SMC package supports automated placement and meets MSL Level 1 reflow requirements (260 °C peak).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 56 V - Maximum continuous reverse operating voltage before significant leakage; defines safe DC/AC working limit. |
| VBR (Breakdown Voltage) | 62.2–68.8 V at 1 mA - Confirmed avalanche initiation range; ensures predictable turn-on during overvoltage events. |
| VC (Clamping Voltage) | 93.6 V at IPPM = 19.5 A - Peak voltage seen by protected circuit during full 1500 W surge; critical for IC survivability. |
| PPPM (Peak Pulse Power) | 1500 W (10/1000 μs) - Validated surge energy handling capacity per industry-standard waveform; enables robust system-level protection. |
| TJ max. | +150 °C - Maximum junction temperature rating; supports operation in under-hood automotive and industrial environments. |
| Package | SMC (DO-214AB) - Surface-mount outline with 7.75 mm × 6.22 mm footprint; compatible with standard SMT assembly and thermal pad layouts. |
| AEC-Q101 Qualified | Yes - Certified for automotive-grade reliability including temperature cycling, HTRB, and mechanical shock testing. |
Pinout & Package
Package: SMC (DO-214AB), surface-mount, bidirectional configuration with no polarity marking - both terminals are electrically symmetric.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode / Cathode (symmetrical) | Transient current path | Either terminal serves as input/output; bidirectional conduction eliminates orientation constraints during PCB layout. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC-coupled or differential signal lines without polarity concerns. |
| 1500 W peak pulse power | Meets IEC 61000-4-5 Level 4 (4 kV line-to-line) surge immunity requirements with margin. |
| AEC-Q101 qualification (HM3 suffix) | Validates suitability for automotive powertrain, body control, and ADAS sensor modules requiring zero-failure field performance. |
| Glass-passivated junction | Ensures stable leakage current (<5 μA at VWM) and long-term reliability under thermal and humidity stress. |
| MSL Level 1 moisture sensitivity | Allows unlimited floor life and standard reflow profile use (peak 260 °C), reducing manufacturing risk. |
Applications
| Automotive Sensor Protection | Industrial PLC I/O Protection |
|---|---|
Use Scenario: Protecting CAN FD and LIN bus transceivers from load-dump and jump-start transients in vehicle ECUs. IC Role / Device Role / Timing Role: Shunt-type transient suppressor placed at connector interface to clamp surges before reaching PHY layer. Use Value: Prevents latch-up or permanent damage to transceivers rated for ≤120 V absolute maximum, leveraging 93.6 V clamping at 19.5 A. |
Use Scenario: Safeguarding 24 V digital input modules in factory automation controllers exposed to relay coil flyback. IC Role / Device Role / Timing Role: Primary overvoltage clamp on field-side signal entry point, coordinated with upstream fusing. Use Value: Limits transient voltage to <94 V during 1500 W surges, maintaining functional safety integrity per IEC 61000-4-4/5. |
| Telecom Line Interface | Consumer Appliance Motor Control |
Use Scenario: Shielding Ethernet PHY front-end from induced surges on PoE-powered network ports. IC Role / Device Role / Timing Role: Secondary protection stage after gas discharge tube (GDT), absorbing residual energy post-GDT crowbar. Use Value: Provides sub-100 V clamping with <1 ns response, preserving signal integrity for 100BASE-TX timing margins. |
Use Scenario: Guarding microcontroller GPIOs driving brushed DC motors in smart home appliances. IC Role / Device Role / Timing Role: Localized TVS at motor driver output to suppress commutation spikes before reaching logic-level MOSFET gates. Use Value: Absorbs 1500 W inductive kickback without degradation, extending MCU lifetime in high-cycle washing machine/dishwasher applications. |
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 PPPM (600 W), same VWM (58 V), SMB package (smaller footprint, lower thermal mass) | Limited to lower-energy transients; unsuitable for IEC 61000-4-5 Level 4 compliance | Select when board space is constrained and surge threat level is ≤Level 2. |
| 1.5KE56CA | Higher leakage (50 μA vs. 5 μA), axial-leaded DO-15 package, non-AEC-Q101 | Not suitable for automated SMT production or automotive under-hood use due to packaging and qualification gap | Use only in legacy through-hole designs where rework tolerance and cost outweigh AEC-Q101 and SMT needs. |
Compared with SMBJ58CA and 1.5KE56CA, the 1.5SMC56CAHM3/I delivers higher surge robustness (1500 W), automotive qualification, and SMT manufacturability - making it the preferred choice for new automotive and industrial designs requiring IEC 61000-4-5 Level 4 immunity and zero-defect field reliability.
Availability
1.5SMC56CAHM3/I is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial PLC I/O modules, telecom line protection, and consumer appliance motor control requiring stable component supply and long-term lifecycle support.
Supply support for 1.5SMC56CAHM3/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 high-reliability diodes, MOSFETs, and passive components for automotive, industrial, and computing markets.
The 1.5SMC Series was engineered specifically for high-power transient suppression in harsh environments, combining AEC-Q101 qualification, 1500 W surge capability, and SMC package scalability across 5.8–540 V voltage grades.
FAQ
What is the clamping voltage of the 1.5SMC56CAHM3/I at its rated peak pulse current?
The 1.5SMC56CAHM3/I has a maximum clamping voltage (VC) of 93.6 V at its peak pulse current (IPPM) of 19.5 A, measured under the standard 10/1000 μs waveform. This value is guaranteed per Vishay's datasheet revision 09-Mar-2026 and defines the upper voltage limit imposed on protected circuitry during worst-case surge events. The 1.5SMC56CAHM3/I maintains this clamping performance across its full operating temperature range.
Is the 1.5SMC56CAHM3/I suitable for automotive applications?
Yes, the 1.5SMC56CAHM3/I is AEC-Q101 qualified, as confirmed by its HM3 suffix and Vishay documentation. It undergoes rigorous stress testing-including temperature cycling, high-temperature reverse bias, and mechanical shock-to meet automotive reliability requirements. The 1.5SMC56CAHM3/I is deployed in engine control units, body electronics, and ADAS sensor modules where sustained operation at 150 °C and immunity to load-dump transients are mandatory.
How does the bidirectional design of the 1.5SMC56CAHM3/I affect PCB layout?
The 1.5SMC56CAHM3/I has no polarity marking and exhibits symmetrical electrical behavior in both directions, eliminating orientation constraints during placement. This simplifies PCB routing for AC-coupled lines, differential buses (e.g., RS-485, CAN), or any application where voltage polarity reversal is possible. Unlike unidirectional TVS diodes, the 1.5SMC56CAHM3/I requires no cathode/anode alignment check during automated assembly.
What is the thermal resistance of the 1.5SMC56CAHM3/I, and how does it impact power dissipation?
The 1.5SMC56CAHM3/I has a typical junction-to-ambient thermal resistance (RθJA) of 75 °C/W when mounted on 8.0 mm × 8.0 mm copper pads per terminal. This value determines steady-state temperature rise under continuous power dissipation (PD = 6.5 W). For transient suppression, however, thermal mass and short-duration pulse handling dominate - the 1.5SMC56CAHM3/I is rated for 1500 W pulses precisely because its junction can absorb energy faster than heat transfers to ambient.
Does the 1.5SMC56CAHM3/I meet RoHS and halogen-free requirements?
Yes, the 1.5SMC56CAHM3/I carries the HM3 suffix, indicating it is both RoHS-compliant and halogen-free per Vishay's material declarations. This satisfies IPC-1752A reporting requirements and aligns with environmental directives including EU RoHS 2011/65/EU and JEDEC JS709. The molding compound also meets UL 94 V-0 flammability standards, supporting safety-certified end equipment.
1.5SMC56CAHM3/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:
- Discontinued at Digi-Key
- 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/I FAQ
1.How can I place an order for 1.5SMC56CAHM3/I through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5SMC56CAHM3/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/I reliable?
The price and inventory of 1.5SMC56CAHM3/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/I is usually 5 days.
3.What payment methods are accepted for 1.5SMC56CAHM3/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5SMC56CAHM3/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5SMC56CAHM3/I?
1.5SMC56CAHM3/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5SMC56CAHM3/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/I?
For technical support, including 1.5SMC56CAHM3/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5SMC56CAHM3/I requirements.
6.How does Aetrix verify that 1.5SMC56CAHM3/I is sourced from the original manufacturer or authorized distributors?
All 1.5SMC56CAHM3/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/I meets industry standards.
7.What is the process for return or replacement of 1.5SMC56CAHM3/I?
All 1.5SMC56CAHM3/I units undergo pre-shipment inspection (PSI). If there is an issue with 1.5SMC56CAHM3/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/I part is unused and in its original packaging.
Return procedure for 1.5SMC56CAHM3/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5SMC56CAHM3/I 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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Diodes Incorporated
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D12V0L1B2LP-7B
Diodes Incorporated
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Nexperia USA Inc.
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Toshiba Semiconductor and Storage
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Diodes Incorporated
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