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Vishay General Semiconductor - Diodes Division 1.5SMC15CAHM3_A/H
- Part No.:
- 1.5SMC15CAHM3_A/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
1.5SMC15CAHM3_A/H.pdf
- Description:
- TVS DIODE 12.8VWM 21.2VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:7,333
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Product details
Overview
1.5SMC15CAHM3_A/H from Vishay General Semiconductor is a bidirectional surface-mount Transient Voltage Suppressor (TVS) diode designed for robust overvoltage protection in power and signal lines. It features a 15 V standoff voltage (VWM), 16.7 V minimum breakdown voltage (VBR), 21.2 V maximum clamping voltage (VC) at 70.8 A peak pulse current, and 1500 W peak pulse power capability with a 10/1000 μs waveform - deployed in automotive sensor interfaces, industrial I/O modules, and telecom line protection.
For engineers reviewing the 1.5SMC15CAHM3_A/H datasheet, 1.5SMC15CAHM3_A/H pinout, 1.5SMC15CAHM3_A/H application, or 1.5SMC15CAHM3_A/H equivalent, this device serves as a halogen-free, AEC-Q101-qualified TVS for bidirectional transient suppression where low clamping ratio, fast response (<1 ns), and MSL Level 1 reflow compatibility are critical design requirements.
Technical Context
The 1.5SMC15CAHM3_A/H operates as a bidirectional avalanche diode, symmetrically clamping voltage transients above ±16.7 V (VBR min) in both polarities without polarity marking. Its glass-passivated junction ensures stable breakdown characteristics and low leakage (<1.0 μA at 12.8 V), while its SMC (DO-214AB) package supports automated placement and withstands 260 °C peak reflow per J-STD-020.
It delivers 1500 W peak pulse power under standardized 10/1000 μs surge conditions with a clamping ratio of 1.27 (VC/VBR = 21.2/16.7), enabling effective protection of downstream MOSFETs, microcontrollers, and analog front-ends against ESD, lightning-induced surges, and inductive switching spikes in harsh environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off) | 12.8 V - Maximum continuous reverse voltage before significant conduction begins; defines safe operating margin below clamping threshold. |
| VBR (Breakdown, min) | 14.3 V - Minimum voltage at which avalanche breakdown initiates at 1.0 mA test current; ensures reliable turn-on during transients. |
| VC (Clamping, max) | 21.2 V - Maximum voltage across device at 70.8 A IPPM; limits stress on protected ICs during worst-case surge events. |
| PPPM | 1500 W - Peak pulse power handling with 10/1000 μs waveform; enables protection against high-energy transients like ISO 7637-2 Pulse 1/2a/5a. |
| ID (Leakage) | <1.0 μA at 12.8 V - Ultra-low reverse leakage preserves signal integrity and battery life in always-on circuits. |
| TJ max | +150 °C - Maximum junction temperature rating; supports operation in under-hood automotive and industrial ambient conditions. |
| Package | SMC (DO-214AB) - Surface-mount package with 7.75 mm × 6.22 mm footprint and 2.62 mm height; optimized for thermal dissipation and PCB space efficiency. |
Pinout & Package
Package: SMC (DO-214AB), bidirectional configuration - no cathode/anode marking; symmetrical two-terminal construction.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Terminal 1 | Transient input/output node | Bidirectional connection point - accepts positive or negative surge energy equally; connects to protected line (e.g., CAN_H or RS-485 A). |
| Terminal 2 | Transient input/output node | Complementary terminal forming symmetrical clamp path; ties to ground or common reference plane via low-inductance layout. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing - suitable for engine control, ADAS sensors, and infotainment power rails. |
| Halogen-free & RoHS-compliant | Meets IEC 61249-2-21 and JEDEC J-STD-020 MSL Level 1 - supports green manufacturing and high-reliability reflow without delamination risk. |
| 1500 W peak pulse power | Withstands repetitive 10/1000 μs surges at 0.01% duty cycle - protects against sustained load-dump or coupled lightning surges in industrial gateways. |
| Low clamping ratio (1.27) | VC/VBR = 21.2/16.7 ensures minimal overvoltage overshoot during clamping - critical for safeguarding 3.3 V or 5 V logic interfaces. |
| Fast response time (<1 ns) | Enables sub-nanosecond reaction to ESD events (IEC 61000-4-2 Level 4) - prevents latch-up or gate oxide damage in sensitive CMOS inputs. |
Applications
| Automotive Sensor Protection | Industrial RS-485 Interface |
|---|---|
Use Scenario: Protecting LIN/CAN transceiver inputs 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 voltage clamp placed directly at connector entry point to shunt surge energy to chassis ground before reaching ASIC or MCU pins. Use Value: Maintains signal integrity under ISO 16750-2 pulses up to 110 V/100 ms while limiting clamped voltage to ≤21.2 V - preventing reset or damage to 5 V tolerant receivers. |
Use Scenario: Safeguarding differential data lines in factory automation PLCs and motor drives exposed to ground loop surges and EFT bursts. IC Role / Device Role / Timing Role: Paired TVS configuration (one per line) referenced to common-mode ground, absorbing common-mode transients on RS-485 A/B bus lines. Use Value: Clamps 4 kV EFT (IEC 61000-4-4) transients within 1 ns, holding differential voltage below receiver's absolute maximum rating (±12 V) even at 70.8 A peak current. |
| Telecom DSL Line Protection | Consumer Power Adapter Input |
Use Scenario: Shielding ADSL/VDSL line drivers and SLIC circuits from lightning-induced surges entering via outdoor copper pairs. IC Role / Device Role / Timing Role: Primary-level bidirectional suppressor mounted at line interface, coordinated with secondary GDT or MOV stages for staged energy absorption. Use Value: Handles 10/700 μs telecom surges (ITU-T K.21) up to 1.5 kV with <21.2 V clamping - preserving voice-grade signal fidelity and preventing transformer saturation. |
Use Scenario: Overvoltage protection on AC-DC adapter primary-side rectifier output or DC-DC converter input rails in smart home hubs and IoT gateways. IC Role / Device Role / Timing Role: Fast-acting clamp between DC rail and ground, triggered by inrush or capacitor failure transients exceeding 12.8 V. Use Value: Limits transient overshoot to ≤21.2 V during 1500 W surges - avoids overstress of 25 V-rated electrolytic capacitors and 30 V MOSFETs in compact SMPS designs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar bidirectional TVS diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ15CA | Same VWM (12.8 V), lower PPPM (600 W), SMB package (smaller footprint, higher RθJA = 90 °C/W) | Limited to lower-energy transients (e.g., IEC 61000-4-2 ESD only); unsuitable for ISO 7637-2 Pulse 5a | Select when board space is constrained and surge energy is ≤600 W; verify thermal derating at 150 °C ambient. |
| 1.5KE15CA | Same VWM/VBR/VC specs, axial-leaded DO-201 package, higher RθJA (60 °C/W), not AEC-Q101 qualified | Requires through-hole assembly; lacks automotive qualification and MSL-1 reflow support | Choose for legacy through-hole designs or cost-sensitive non-automotive applications where leaded mounting is acceptable. |
Compared with SMBJ15CA and 1.5KE15CA, the 1.5SMC15CAHM3_A/H uniquely combines AEC-Q101 qualification, 1500 W surge capacity, halogen-free compliance, and SMC surface-mount packaging - making it the preferred choice for new automotive and industrial designs requiring high-reliability, high-power transient suppression in automated assembly.
Availability
1.5SMC15CAHM3_A/H is available at Aetrix Electronics and suitable for automotive ECU protection, industrial communication interfaces, telecom line cards, and consumer power supply designs requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for 1.5SMC15CAHM3_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 performance.
The 1.5SMC Series was engineered for high-power, surface-mount transient suppression in demanding automotive, industrial, and telecom environments - delivering consistent clamping behavior, AEC-Q101 validation, and robust thermal performance in the SMC package.
FAQ
What is the clamping voltage of the 1.5SMC15CAHM3_A/H at its rated peak pulse current?
The 1.5SMC15CAHM3_A/H has a maximum clamping voltage (VC) of 21.2 V at its rated peak pulse current (IPPM) of 70.8 A, measured using the standard 10/1000 μs double-exponential waveform. This value is guaranteed across the full operating temperature range and ensures predictable overvoltage limiting for protected circuitry.
Is the 1.5SMC15CAHM3_A/H suitable for automotive applications?
Yes, the 1.5SMC15CAHM3_A/H is AEC-Q101 qualified and manufactured with halogen-free, RoHS-compliant materials. Its SMC package meets MSL Level 1 reflow requirements, and its 1500 W surge rating supports ISO 7637-2 and ISO 16750-2 compliance testing - making it appropriate for engine control units, body electronics, and ADAS sensor modules.
How does the bidirectional configuration of the 1.5SMC15CAHM3_A/H affect its circuit implementation?
The 1.5SMC15CAHM3_A/H has no polarity marking and conducts symmetrically in both directions, allowing direct placement across any two points needing bidirectional surge protection - such as differential signal lines (CAN, RS-485) or AC-coupled paths. No orientation check is required during placement, simplifying layout and assembly.
What is the maximum junction temperature rating for the 1.5SMC15CAHM3_A/H?
The 1.5SMC15CAHM3_A/H has a maximum junction temperature (TJ max) of +150 °C, enabling reliable operation in under-hood automotive environments and high-ambient industrial settings. Thermal design must account for its typical junction-to-lead thermal resistance (RθJL = 15 °C/W) and power dissipation limits.
Does the 1.5SMC15CAHM3_A/H meet moisture sensitivity level (MSL) requirements for lead-free reflow?
Yes, the 1.5SMC15CAHM3_A/H meets MSL Level 1 per J-STD-020, with a maximum peak reflow temperature of 260 °C. It can be subjected to standard lead-free soldering profiles without baking or special handling, supporting high-yield automated assembly in commercial and automotive production lines.
1.5SMC15CAHM3_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:
- 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)
1.5SMC15CAHM3_A/H FAQ
1.How can I place an order for 1.5SMC15CAHM3_A/H through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5SMC15CAHM3_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 1.5SMC15CAHM3_A/H reliable?
The price and inventory of 1.5SMC15CAHM3_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 1.5SMC15CAHM3_A/H is usually 5 days.
3.What payment methods are accepted for 1.5SMC15CAHM3_A/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5SMC15CAHM3_A/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5SMC15CAHM3_A/H?
1.5SMC15CAHM3_A/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5SMC15CAHM3_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 1.5SMC15CAHM3_A/H?
For technical support, including 1.5SMC15CAHM3_A/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5SMC15CAHM3_A/H requirements.
6.How does Aetrix verify that 1.5SMC15CAHM3_A/H is sourced from the original manufacturer or authorized distributors?
All 1.5SMC15CAHM3_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 1.5SMC15CAHM3_A/H meets industry standards.
7.What is the process for return or replacement of 1.5SMC15CAHM3_A/H?
All 1.5SMC15CAHM3_A/H units undergo pre-shipment inspection (PSI). If there is an issue with 1.5SMC15CAHM3_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 1.5SMC15CAHM3_A/H part is unused and in its original packaging.
Return procedure for 1.5SMC15CAHM3_A/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5SMC15CAHM3_A/H Tags
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