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Vishay General Semiconductor - Diodes Division 1.5SMC56CAHE3_A/H
- Part No.:
- 1.5SMC56CAHE3_A/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
1.5SMC56CAHE3_A/H.pdf
- Description:
- TVS DIODE 47.8VWM 77VC SMC
- Quantity:
- Payment:
- Shipping:
Inventory:6,143
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Product details
Overview
1.5SMC56CAHE3_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), 62.7 V minimum breakdown voltage (VBR), 1500 W peak pulse power (10/1000 μs), and clamps to ≤93.6 V at 19.5 A peak pulse current - deployed in automotive sensor interfaces, industrial I/O modules, and telecom line protection.
For engineers reviewing the 1.5SMC56CAHE3_A/H datasheet, 1.5SMC56CAHE3_A/H pinout, 1.5SMC56CAHE3_A/H application, or 1.5SMC56CAHE3_A/H 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
This device operates as a voltage-clamped shunt protector: under normal conditions it presents high impedance (>1 μA leakage at 47.8 V), then rapidly avalanches when transient voltage exceeds VBR (62.7–69.3 V), diverting surge current away from downstream circuitry. Its glass-passivated junction ensures stable breakdown and low dynamic resistance.
Designed for repetitive transients up to 0.01% duty cycle, it sustains 1500 W peak pulse power per 10/1000 μs waveform with thermal derating above 25 °C (RθJA = 75 °C/W). The bidirectional symmetry enables use on AC-coupled or floating lines without polarity concerns.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off) | 47.8 V - maximum continuous reverse voltage before significant leakage; defines operating margin below clamping threshold |
| VBR (Breakdown) | 62.7–69.3 V at 1 mA - guaranteed avalanche initiation range; ensures reliable turn-on during surges |
| VC (Clamping) | ≤93.6 V at IPPM = 19.5 A - peak voltage seen by protected circuit during worst-case 1500 W transient |
| PPPM | 1500 W (10/1000 μs) - surge energy handling capacity compatible with IEC 61000-4-5 Level 4 test profiles |
| Package | SMC (DO-214AB) - surface-mount outline with 8.0 mm × 8.0 mm copper pad requirement for thermal performance |
| AEC-Q101 | Qualified - validated for automotive-grade reliability including temperature cycling, HTRB, and ESD robustness |
| Mounting | Matte tin-plated leads, J-STD-002 solderable - supports automated reflow assembly with MSL level 1 rating (260 °C peak) |
Pinout & Package
Package: SMC (DO-214AB), molded epoxy case meeting UL 94 V-0 flammability rating; dimensions 7.75 mm × 6.22 mm × 2.62 mm (L × W × H); unmarked bidirectional construction - no cathode/anode polarity marking required.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Terminal 1 | Anode / Line 1 | One side of symmetrical bidirectional junction; connects to protected line or signal path |
| Terminal 2 | Cathode / Line 2 | Other side of symmetrical bidirectional junction; completes shunt path to reference (GND or return) |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables protection on AC, differential, or floating nodes without polarity constraints |
| 1500 W peak pulse power | Meets IEC 61000-4-5 surge immunity requirements for industrial and automotive applications |
| AEC-Q101 qualification | Validated for automotive electronics including engine control units and ADAS sensor interfaces |
| Glass-passivated junction | Ensures stable VBR over lifetime and improved resistance to humidity and contamination |
| Low incremental surge resistance | Minimizes clamping voltage overshoot during fast-rising transients (e.g., ESD, inductive kick) |
Applications
| Automotive Sensor Protection | Industrial PLC I/O Protection |
|---|---|
Use Scenario: Protecting CAN bus transceivers and analog sensor inputs (e.g., pressure, temperature) from load dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Shunt TVS placed across signal/power pins to clamp transients before they reach sensitive analog front-ends or communication ICs. Use Value: Maintains signal integrity during 12 V/24 V system load dump events (up to 120 V, 400 ms) while surviving repeated exposure per AEC-Q101 stress tests. |
Use Scenario: Safeguarding digital input modules in programmable logic controllers against field-wiring induced surges and ground bounce. IC Role / Device Role / Timing Role: Bidirectional TVS installed between input terminal and common rail to absorb ±1 kV/500 A surges per IEC 61000-4-5. Use Value: Prevents latch-up or permanent damage to optocouplers and microcontrollers during factory floor ESD or lightning-induced coupling. |
| Telecom Line Interface | Consumer Power Adapter Input |
Use Scenario: Front-end protection for Ethernet PHYs, RS-485 transceivers, and DSL line drivers exposed to lightning-induced surges. IC Role / Device Role / Timing Role: Primary shunt suppressor on differential pairs or DC bias rails, coordinated with GDT or MOV secondary stages. Use Value: Clamps common-mode transients to <93.6 V within nanoseconds, preserving signal eye diagram integrity and preventing receiver saturation. |
Use Scenario: Secondary-side overvoltage suppression in AC/DC adapters after rectification, protecting switching controllers and output capacitors. IC Role / Device Role / Timing Role: Bidirectional clamp across DC output rails to suppress ringing and flyback spikes from transformer leakage inductance. Use Value: Limits output voltage excursions to safe levels (<93.6 V) during no-load or short-circuit recovery, avoiding MOSFET avalanche failure. |
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 (48.4 V), SMB package (smaller footprint, higher RθJA) | Not AEC-Q101 qualified; suitable for commercial-grade consumer or computing applications only | Select when board space is constrained and surge energy is ≤600 W; verify thermal margin with reduced copper area |
| 1.5KE56CA | Same VWM/VBR/VC specs, but axial DO-15 package - incompatible with SMT assembly and automotive vibration requirements | Limited to through-hole prototyping or legacy industrial equipment; lacks MSL 1 and AEC-Q101 validation | Choose only for hand-soldered repair or non-automated production; not recommended for new automotive or high-reliability designs |
Compared with SMBJ58CA and 1.5KE56CA, the 1.5SMC56CAHE3_A/H delivers higher surge robustness (1500 W vs. 600 W or axial-limited thermal performance) and certified automotive reliability - making it the preferred choice where IEC 61000-4-5 Level 4 immunity and zero-field-failure targets apply.
Availability
1.5SMC56CAHE3_A/H is available at Aetrix Electronics and suitable for automotive sensor systems, industrial PLC I/O modules, telecom line interfaces, and consumer power adapter designs requiring stable component supply, long-term lifecycle support, and AEC-Q101-compliant surge protection.
Supply support for 1.5SMC56CAHE3_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, TVS devices, and optoelectronics 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 compact size, AEC-Q101 compliance, and repeatable clamping performance are mandatory.
FAQ
What is the clamping voltage of the 1.5SMC56CAHE3_A/H under maximum rated surge current?
The 1.5SMC56CAHE3_A/H clamps to a maximum of 93.6 V when subjected to its rated peak pulse current of 19.5 A (10/1000 μs waveform). This value is measured per standard test conditions defined in the Vishay datasheet (Document Number 88303), and represents the highest voltage that will appear across the protected circuit during a full 1500 W transient event.
Is the 1.5SMC56CAHE3_A/H suitable for automotive applications?
Yes, the 1.5SMC56CAHE3_A/H is AEC-Q101 qualified and specifically designated for automotive use via the "HE3" suffix and revision code "A/H". It has undergone stress testing for temperature cycling, high-temperature reverse bias, and mechanical shock - validating its suitability for engine control units, body electronics, and ADAS sensor interfaces.
How does the bidirectional configuration of the 1.5SMC56CAHE3_A/H affect its PCB layout?
The 1.5SMC56CAHE3_A/H has no polarity marking and functions identically in both directions, simplifying PCB layout by eliminating orientation constraints. It can be placed across AC-coupled lines, differential pairs, or floating references without concern for anode/cathode alignment - reducing assembly errors and enabling symmetric routing in high-speed interfaces.
What is the thermal resistance of the 1.5SMC56CAHE3_A/H, and how does it impact power dissipation?
The 1.5SMC56CAHE3_A/H 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 means sustained power dissipation must remain below 6.5 W at 50 °C ambient to avoid exceeding the 150 °C max junction temperature - limiting continuous operation but fully supporting intermittent surge handling.
Does the 1.5SMC56CAHE3_A/H meet any safety certifications?
Yes, the 1.5SMC56CAHE3_A/H is Underwriters Laboratories (UL) recognized under file E136766 for both unidirectional and bidirectional configurations, complying with UL 497B for signal line protectors. Its molding compound also meets UL 94 V-0 flammability rating, confirming resistance to flame propagation during fault conditions.
1.5SMC56CAHE3_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:
- -
- 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/H FAQ
1.How can I place an order for 1.5SMC56CAHE3_A/H through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5SMC56CAHE3_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 1.5SMC56CAHE3_A/H reliable?
The price and inventory of 1.5SMC56CAHE3_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 1.5SMC56CAHE3_A/H is usually 5 days.
3.What payment methods are accepted for 1.5SMC56CAHE3_A/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5SMC56CAHE3_A/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5SMC56CAHE3_A/H?
1.5SMC56CAHE3_A/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5SMC56CAHE3_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 1.5SMC56CAHE3_A/H?
For technical support, including 1.5SMC56CAHE3_A/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5SMC56CAHE3_A/H requirements.
6.How does Aetrix verify that 1.5SMC56CAHE3_A/H is sourced from the original manufacturer or authorized distributors?
All 1.5SMC56CAHE3_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 1.5SMC56CAHE3_A/H meets industry standards.
7.What is the process for return or replacement of 1.5SMC56CAHE3_A/H?
All 1.5SMC56CAHE3_A/H units undergo pre-shipment inspection (PSI). If there is an issue with 1.5SMC56CAHE3_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 1.5SMC56CAHE3_A/H part is unused and in its original packaging.
Return procedure for 1.5SMC56CAHE3_A/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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