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Vishay General Semiconductor - Diodes Division 1.5SMC15CAHE3_A/H
- Part No.:
- 1.5SMC15CAHE3_A/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
1.5SMC15CAHE3_A/H.pdf
- Description:
- TVS DIODE 12.8VWM 21.2VC SMC
- Quantity:
- Payment:
- Shipping:
Inventory:9,183
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Product details
Overview
1.5SMC15CAHE3_A/H from Vishay General Semiconductor is a bidirectional surface-mount Transient Voltage Suppressor (TVS) diode in the SMC (DO-214AB) package, designed for high-energy surge protection on signal and power lines. It features a 15 V standoff voltage (VWM), 17.1 V minimum breakdown voltage (VBR), 21.2 V maximum clamping voltage (VC) at 70.8 A peak pulse current (IPPM), and 1500 W peak pulse power capability with a 10/1000 μs waveform - ideal for protecting automotive sensor interfaces and industrial I/O lines against lightning-induced transients and inductive switching spikes.
For engineers reviewing the 1.5SMC15CAHE3_A/H datasheet, 1.5SMC15CAHE3_A/H pinout, 1.5SMC15CAHE3_A/H application, or 1.5SMC15CAHE3_A/H equivalent, this device delivers AEC-Q101 qualification, low incremental surge resistance, fast response time (<1 ns), and MSL Level 1 moisture sensitivity - critical for under-hood automotive electronics, industrial PLC inputs, and telecom line interface designs requiring robust, RoHS-compliant transient suppression.
Technical Context
The 1.5SMC15CAHE3_A/H operates as a bidirectional avalanche diode, symmetrically clamping voltage surges in both polarities without polarity marking. Its glass-passivated junction ensures stable breakdown characteristics and long-term reliability under repetitive surge stress.
It is rated for 1500 W peak pulse power (10/1000 μs), 6.5 W steady-state power dissipation, and supports operating junction temperatures from –65 °C to +150 °C. Thermal resistance is 75 °C/W (junction-to-ambient) and 15 °C/W (junction-to-leads), enabling effective heat transfer when mounted on 8.0 mm × 8.0 mm copper pads.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 12.8 V - Maximum continuous reverse voltage before clamping begins; defines safe operating window for protected circuitry. |
| VBR (Breakdown Voltage) | 14.3–15.8 V at 1.0 mA test current - Ensures precise, repeatable avalanche initiation during overvoltage events. |
| VC (Clamping Voltage) | 21.2 V at 70.8 A IPPM - Limits transient voltage seen by downstream ICs, enabling compatibility with 16 V-rated logic and analog components. |
| PPPM (Peak Pulse Power) | 1500 W - Handles high-energy transients such as ISO 7637-2 Pulse 1/2a/5a in automotive systems. |
| TJ max. | +150 °C - Supports operation in under-hood environments and industrial enclosures without derating below ambient. |
| MSL Level | Level 1 per J-STD-020 - No floor life limitation; compatible with standard reflow profiles up to 260 °C peak. |
| AEC-Q101 Qualified | Yes - Validated for automotive-grade reliability including temperature cycling, HTRB, and surge endurance testing. |
Pinout & Package
Package: SMC (DO-214AB), surface-mount, low-profile case with matte tin-plated leads solderable per J-STD-002 and JESD 22-B102. Bidirectional construction means no cathode/anode marking; terminals are symmetrical and interchangeable.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Terminal 1 | Anode / Cathode (bidirectional) | Either terminal serves as input/output for transient energy; no polarity dependency enables flexible PCB layout. |
| Terminal 2 | Anode / Cathode (bidirectional) | Paired terminal completes the symmetrical clamping path; identical electrical behavior in both directions. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC-coupled or floating signal lines without external polarity management. |
| 1500 W peak pulse rating | Meets IEC 61000-4-5 Level 4 (4 kV line-to-line, 2 kV line-to-ground) with margin for system-level compliance. |
| AEC-Q101 qualification | Validates suitability for automotive applications including engine control modules, ADAS sensors, and body electronics. |
| Low clamping ratio (VC/VBR ≈ 1.44) | Minimizes voltage overshoot during surge events, reducing stress on downstream MOSFETs and microcontrollers. |
| MSL Level 1 handling | Eliminates bake-out requirements and simplifies SMT assembly in high-volume manufacturing. |
Applications
| Automotive Sensor Interface | Industrial PLC Input Protection |
|---|---|
Use Scenario: Protecting CAN/LIN bus transceivers and analog sensor outputs (e.g., pressure, temperature) from load-dump and jump-start transients in vehicle ECUs. IC Role / Device Role / Timing Role: Bidirectional TVS placed across differential signal pair or supply rail to clamp ±200 V transients within nanoseconds. Use Value: Prevents latch-up or gate oxide damage in 3.3 V/5 V interface ICs while maintaining signal integrity due to low capacitance (<100 pF at 0 V). |
Use Scenario: Safeguarding 24 V DC digital input channels in programmable logic controllers exposed to relay coil flyback and ESD from operator interaction. IC Role / Device Role / Timing Role: Primary surge suppressor mounted at connector entry point, shunting >1 kA surge currents away from optocoupler input stages. Use Value: Enables >100,000 surge cycles without degradation, meeting IEC 61000-4-4 (EFT) and IEC 61000-4-5 (surge) immunity requirements. |
| Telecom Line Interface | Consumer Appliance Motor Control |
Use Scenario: Shielding RS-485 transceivers and Ethernet PHYs in outdoor network equipment from lightning-induced common-mode surges on twisted-pair cables. IC Role / Device Role / Timing Role: Paired bidirectional TVS devices on each line (A/B) referenced to ground, forming a low-impedance path for surge energy. Use Value: Clamps transients to <25 V while maintaining <10 pF inter-terminal capacitance - preserving signal rise time and data integrity up to 10 Mbps. |
Use Scenario: Suppressing back-EMF spikes from brushed DC motors in washing machines, HVAC blowers, and power tools connected to MCU-based motor drivers. IC Role / Device Role / Timing Role: Mounted across motor terminals or H-bridge outputs to absorb inductive kickback during PWM commutation. Use Value: Withstands 200 A non-repetitive forward surge (IFSM), preventing MOSFET failure during stall or startup conditions. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ15CA | Lower peak pulse power (600 W), same VWM/VC ratings, SMB (DO-214AA) package - 30% smaller footprint but higher thermal resistance (100 °C/W). | Preferred for space-constrained consumer PCBs where surge energy is limited to IEC 61000-4-2 ESD only. | Select when board area is critical and surge threat level is moderate; verify thermal performance under repeated pulses. |
| 1.5KE15CA | Higher power (1500 W), axial-lead DO-15 package - not surface-mountable, requires through-hole assembly and larger board real estate. | Suitable for prototyping, legacy industrial controls, or high-vibration environments where leaded mounting improves mechanical robustness. | Choose for manual assembly or ruggedized designs where SMT reliability concerns exist; avoid in automated high-density layouts. |
Compared with SMBJ15CA and 1.5KE15CA, the 1.5SMC15CAHE3_A/H uniquely combines AEC-Q101 qualification, SMC's optimized thermal pad layout, and MSL Level 1 compatibility - making it the preferred choice for production automotive and industrial SMT applications demanding validated reliability and process efficiency.
Availability
1.5SMC15CAHE3_A/H is available at Aetrix Electronics and suitable for automotive sensor protection, industrial PLC input conditioning, and telecom line interface designs requiring stable component supply, full traceability, and long-term lifecycle support.
Supply support for 1.5SMC15CAHE3_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 high-reliability, high-power, and automotive-qualified solutions.
The 1.5SMC Series was engineered specifically for surface-mount transient suppression in harsh environments - balancing high surge capacity, low clamping voltage, and AEC-Q101 compliance for next-generation automotive and industrial electronics.
FAQ
What is the clamping voltage of the 1.5SMC15CAHE3_A/H at its rated peak pulse current?
The 1.5SMC15CAHE3_A/H has a maximum clamping voltage (VC) of 21.2 V at 70.8 A peak pulse current (IPPM), measured using a 10/1000 μs waveform. This value ensures that downstream components - such as 16 V-tolerant microcontrollers or CAN transceivers - remain within safe operating limits during surge events. The 1.5SMC15CAHE3_A/H achieves this with low incremental surge resistance, contributing to consistent clamping performance across multiple transients.
Is the 1.5SMC15CAHE3_A/H suitable for automotive applications?
Yes, the 1.5SMC15CAHE3_A/H is AEC-Q101 qualified and explicitly designated for automotive use via its "HE3" suffix. It undergoes rigorous stress testing including temperature cycling, high-temperature reverse bias, and surge endurance - validating reliability in engine control units, ADAS camera modules, and body control modules. The 1.5SMC15CAHE3_A/H also meets MSL Level 1, supporting standard reflow assembly without moisture sensitivity concerns.
How does the bidirectional configuration of the 1.5SMC15CAHE3_A/H affect its placement on the PCB?
The 1.5SMC15CAHE3_A/H has no polarity marking and functions identically in both directions, so orientation on the PCB is irrelevant. This simplifies layout, eliminates risk of reverse installation, and allows use across AC-coupled lines, differential buses (e.g., RS-485), or floating power rails. Unlike unidirectional TVS diodes, the 1.5SMC15CAHE3_A/H does not require alignment with circuit polarity - reducing assembly errors and design overhead.
What is the thermal resistance of the 1.5SMC15CAHE3_A/H, and how does it impact power handling?
The 1.5SMC15CAHE3_A/H has a typical junction-to-ambient thermal resistance (RθJA) of 75 °C/W and junction-to-leads resistance (RθJL) of 15 °C/W, measured on 8.0 mm × 8.0 mm copper pads. These values enable reliable operation at 6.5 W continuous power dissipation at 50 °C ambient. For high-duty-cycle surge environments, the low RθJL supports rapid heat transfer into PCB copper, preventing thermal runaway - a key advantage of the SMC package over smaller SMB or SOD variants.
Does the 1.5SMC15CAHE3_A/H meet RoHS and halogen-free requirements?
Yes, the 1.5SMC15CAHE3_A/H is RoHS-compliant and follows Vishay's commercial-grade HE3 specification, which mandates lead-free terminations and compliant molding compounds. It is not halogen-free - that designation applies to HM3-suffixed variants. The 1.5SMC15CAHE3_A/H satisfies EU RoHS Directive 2011/65/EU and is marked with appropriate compliance documentation in Vishay's official datasheet (Document Number: 88303).
1.5SMC15CAHE3_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):
- 12.8V
- Voltage - Breakdown (Min):
- 14.3V
- Voltage - Clamping (Max) @ Ipp:
- 21.2V
- Current - Peak Pulse (10/1000µs):
- 70.8A
- 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)
1.5SMC15CAHE3_A/H FAQ
1.How can I place an order for 1.5SMC15CAHE3_A/H through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5SMC15CAHE3_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 1.5SMC15CAHE3_A/H reliable?
The price and inventory of 1.5SMC15CAHE3_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 1.5SMC15CAHE3_A/H is usually 5 days.
3.What payment methods are accepted for 1.5SMC15CAHE3_A/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5SMC15CAHE3_A/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5SMC15CAHE3_A/H?
1.5SMC15CAHE3_A/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5SMC15CAHE3_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 1.5SMC15CAHE3_A/H?
For technical support, including 1.5SMC15CAHE3_A/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5SMC15CAHE3_A/H requirements.
6.How does Aetrix verify that 1.5SMC15CAHE3_A/H is sourced from the original manufacturer or authorized distributors?
All 1.5SMC15CAHE3_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 1.5SMC15CAHE3_A/H meets industry standards.
7.What is the process for return or replacement of 1.5SMC15CAHE3_A/H?
All 1.5SMC15CAHE3_A/H units undergo pre-shipment inspection (PSI). If there is an issue with 1.5SMC15CAHE3_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 1.5SMC15CAHE3_A/H part is unused and in its original packaging.
Return procedure for 1.5SMC15CAHE3_A/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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