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Vishay General Semiconductor - Diodes Division 1.5SMC56CAHE3_A/I
- Part No.:
- 1.5SMC56CAHE3_A/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
1.5SMC56CAHE3_A/I.pdf
- Description:
- TVS DIODE 47.8VWM 77VC SMC
- Quantity:
- Payment:
- Shipping:
Inventory:6,817
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Product details
Overview
1.5SMC56CAHE3_A/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), 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 widely deployed in automotive sensor interfaces and industrial I/O protection.
For engineers reviewing the 1.5SMC56CAHE3_A/I datasheet, 1.5SMC56CAHE3_A/I pinout, 1.5SMC56CAHE3_A/I application, or 1.5SMC56CAHE3_A/I equivalent, key selection criteria include bidirectional clamping capability, AEC-Q101 qualification, SMC (DO-214AB) package compatibility, and compliance with UL 497B surge protector requirements.
Technical Context
The 1.5SMC56CAHE3_A/I is a glass-passivated, surface-mount TVS diode optimized for fast response (<1 ps) to transient events such as ESD, lightning-induced surges, and inductive switching spikes. Its symmetrical bidirectional structure enables identical clamping behavior in both polarities without polarity marking.
It delivers 1500 W peak pulse power per 10/1000 µs waveform with low incremental surge resistance and excellent clamping ratio (VC/VBR ≈ 1.38), ensuring minimal overshoot during high-energy transients. Thermal performance is supported by RθJL = 15 °C/W and MSL Level 1 rating (260 °C reflow 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 working margin below clamping threshold. |
| VBR (Breakdown Voltage) | 64.6–71.4 V at 1 mA - Voltage at which device enters avalanche conduction; ensures predictable turn-on during overvoltage events. |
| VC (Clamping Voltage) | 92.0 V at 16.3 A - Maximum voltage seen by protected circuit during 10/1000 µs surge; determines stress on downstream components. |
| PPPM (Peak Pulse Power) | 1500 W - Surge energy handling capacity under standardized 10/1000 µs waveform; supports IEC 61000-4-5 Level 4 compliance. |
| TJ max. | +150 °C - Maximum junction temperature; enables reliable operation in under-hood automotive and industrial ambient environments. |
| Package | SMC (DO-214AB) - Standardized surface-mount outline with 8.0 mm × 8.0 mm copper pad thermal relief; compatible with automated assembly. |
| 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), molded plastic case with matte tin-plated leads, UL 94 V-0 rated, MSL Level 1 (260 °C peak reflow).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry terminal in forward bias; common node in bidirectional configuration | No polarity marking required; symmetric terminals enable dual-direction surge shunting without orientation dependency. |
| Cathode | Current exit terminal in forward bias; common node in bidirectional configuration | Identical physical terminal to Anode; bidirectional operation eliminates cathode/anode functional distinction in circuit layout. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC-coupled or floating signal lines without polarity concerns or external diode pairing. |
| 1500 W peak pulse power | Supports high-energy transients per IEC 61000-4-5 (10/1000 µs) up to Level 4 (4 kV line-to-line), reducing need for cascaded protection stages. |
| AEC-Q101 qualification | Validates suitability for automotive applications including engine control modules, ADAS sensors, and infotainment power rails. |
| Low clamping ratio (VC/VBR ≈ 1.38) | Minimizes voltage overshoot during surge events, preserving margin for 3.3 V, 5 V, and 12 V logic and analog ICs. |
| MSL Level 1 moisture sensitivity | Eliminates bake-out requirement prior to reflow, streamlining manufacturing for high-volume automotive and industrial PCB assembly. |
Applications
| Automotive Sensor Interface | Industrial PLC Analog Input |
|---|---|
|
Use Scenario: Protecting CAN/LIN bus transceivers and analog sensor outputs (e.g., pressure, temperature) from load dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Bidirectional TVS placed at connector entry point to clamp ±100 V transients before signal conditioning amplifiers or microcontroller ADC inputs. Use Value: Prevents latch-up or permanent damage to 5 V tolerant automotive MCUs while maintaining signal integrity through low capacitance (<100 pF at 0 V). |
Use Scenario: Safeguarding 4–20 mA current loop receivers and 0–10 V analog inputs in programmable logic controllers against field wiring surges and ground bounce. IC Role / Device Role / Timing Role: Primary overvoltage clamp on input terminals, coordinated with series current-limiting resistors and filtering capacitors. Use Value: Enables >15 kV ESD contact discharge immunity and withstands repetitive 1 kV/500 A surges per IEC 61000-4-5, extending field service life. |
| Telecom Line Card Protection | Consumer Power Adapter Output |
|
Use Scenario: Shielding Ethernet PHYs, DSL line drivers, and POTS interface ICs from lightning-induced longitudinal surges on twisted-pair lines. IC Role / Device Role / Timing Role: First-stage surge suppressor mounted adjacent to RJ-45 connector, preceding GDT or polymer PTC secondary protection. Use Value: Limits induced common-mode voltage to <92 V during 10/1000 µs transients, preventing breakdown of 100 V-rated Ethernet magnetics and PHY ESD structures. |
Use Scenario: Securing USB-C PD and 12 V/24 V wall adapter outputs against reverse polarity connection, hot-plug inrush, and accidental short-circuit transients. IC Role / Device Role / Timing Role: Output-side TVS placed after DC-DC converter and before connector, absorbing energy from cable capacitance discharge events. Use Value: Clamps output to ≤92 V during 1500 W surges, protecting connected devices with 20 V absolute maximum ratings (e.g., USB-PD sink ICs). |
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 pulse power (600 W), same 58 V VWM, SMB (DO-214AA) package (smaller footprint, higher thermal resistance) | Best suited for space-constrained consumer electronics where 600 W surge margin is sufficient | Select when board area is limited and full 1500 W capability is not required; verify thermal derating for sustained surge duty cycles |
| 1.5KE56CA | Through-hole TO-204AE (DO-15) package, identical electrical specs but incompatible with SMT assembly and higher RθJA (100 °C/W) | Used in legacy industrial power supplies and repair scenarios requiring axial-leaded replacement | Choose only for manual assembly or backward-compatible upgrades; not suitable for new SMT designs or AEC-Q101 programs |
Compared with SMBJ58CA and 1.5KE56CA, the 1.5SMC56CAHE3_A/I uniquely combines AEC-Q101 qualification, 1500 W surge rating, and SMC package thermal performance-making it the preferred choice for new automotive and high-reliability industrial designs requiring validated long-term stability.
Availability
1.5SMC56CAHE3_A/I is available at Aetrix Electronics and suitable for automotive sensor protection, industrial PLC I/O hardening, telecom line card surge resilience, and consumer power adapter output safeguarding requiring stable component supply and full traceability.
Supply support for 1.5SMC56CAHE3_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 TVS solutions for automotive, industrial, and telecom systems demanding AEC-Q101 validation, UL 497B recognition, and consistent clamping performance across temperature and lifetime.
FAQ
What is the clamping voltage of the 1.5SMC56CAHE3_A/I under a 10/1000 µs surge?
The 1.5SMC56CAHE3_A/I clamps to a maximum of 92.0 V at 16.3 A under the standard 10/1000 µs waveform. This value is measured per Figure 1 in Vishay document 88303 and represents the upper limit of voltage imposed on protected circuitry during a full-rated surge event. The clamping voltage remains stable across its operating temperature range (–65 °C to +150 °C) due to low temperature coefficient of VBR (0.104 %/°C).
Is the 1.5SMC56CAHE3_A/I suitable for automotive applications?
Yes, the 1.5SMC56CAHE3_A/I is AEC-Q101 qualified and explicitly designated for automotive use via its "HE3" suffix and revision-coded ordering option. It has passed stress tests including temperature cycling, high-temperature reverse bias (HTRB), and ESD per AEC-Q101 Rev D. Its SMC package, MSL Level 1 rating, and operation up to +150 °C junction temperature make it appropriate for engine control units, body electronics, and ADAS sensor modules.
How does the bidirectional design of the 1.5SMC56CAHE3_A/I affect PCB layout?
The 1.5SMC56CAHE3_A/I has no polarity marking and identical electrical behavior in both directions, so PCB layout requires no orientation alignment-either terminal may connect to line or return. This simplifies routing for differential or floating signals (e.g., RS-485, CAN, audio lines) and eliminates risk of misplacement during automated assembly. The SMC (DO-214AB) footprint remains unchanged versus unidirectional variants.
What is the maximum steady-state power dissipation of the 1.5SMC56CAHE3_A/I?
The 1.5SMC56CAHE3_A/I has a maximum steady-state power dissipation (PD) of 6.5 W at TA = 50 °C on an infinite heatsink. In typical PCB layouts with 8.0 mm × 8.0 mm copper pads per terminal, derating applies above 25 °C ambient-per Figure 2 in document 88303. At 70 °C ambient, usable PD drops to approximately 4.2 W, limiting continuous leakage current to ~74 µA at VWM (56 V).
Does the 1.5SMC56CAHE3_A/I meet UL safety standards?
Yes, the 1.5SMC56CAHE3_A/I carries Underwriters Laboratories recognition under UL 497B (Surge Protective Devices) with file number E136766 for both unidirectional and bidirectional configurations. This certification confirms compliance for use as a primary protector in telecommunications, data, and signal line applications where UL listing is mandated for end-equipment safety approval.
1.5SMC56CAHE3_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:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -65°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AB (SMCJ)
1.5SMC56CAHE3_A/I FAQ
1.How can I place an order for 1.5SMC56CAHE3_A/I through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5SMC56CAHE3_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 1.5SMC56CAHE3_A/I reliable?
The price and inventory of 1.5SMC56CAHE3_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 1.5SMC56CAHE3_A/I is usually 5 days.
3.What payment methods are accepted for 1.5SMC56CAHE3_A/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5SMC56CAHE3_A/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5SMC56CAHE3_A/I?
1.5SMC56CAHE3_A/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5SMC56CAHE3_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 1.5SMC56CAHE3_A/I?
For technical support, including 1.5SMC56CAHE3_A/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5SMC56CAHE3_A/I requirements.
6.How does Aetrix verify that 1.5SMC56CAHE3_A/I is sourced from the original manufacturer or authorized distributors?
All 1.5SMC56CAHE3_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 1.5SMC56CAHE3_A/I meets industry standards.
7.What is the process for return or replacement of 1.5SMC56CAHE3_A/I?
All 1.5SMC56CAHE3_A/I units undergo pre-shipment inspection (PSI). If there is an issue with 1.5SMC56CAHE3_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 1.5SMC56CAHE3_A/I part is unused and in its original packaging.
Return procedure for 1.5SMC56CAHE3_A/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5SMC56CAHE3_A/I Tags
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