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Vishay General Semiconductor - Diodes Division 1.5SMC15CAHM3_A/I
- Part No.:
- 1.5SMC15CAHM3_A/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
1.5SMC15CAHM3_A/I.pdf
- Description:
- TVS DIODE 12.8VWM 21.2VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:9,176
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Product details
Overview
1.5SMC15CAHM3_A/I from Vishay General Semiconductor is a bidirectional surface-mount Transient Voltage Suppressor (TVS) diode in the SMC (DO-214AB) package, designed for robust overvoltage protection of sensitive electronics. 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 (IPPM), and 1500 W peak pulse power capability with a 10/1000 μs waveform - deployed in automotive sensor signal lines, industrial I/O interfaces, and telecom power rails.
For engineers reviewing the 1.5SMC15CAHM3_A/I datasheet, 1.5SMC15CAHM3_A/I pinout, 1.5SMC15CAHM3_A/I application, or 1.5SMC15CAHM3_A/I equivalent, this device serves as an AEC-Q101-qualified, halogen-free, RoHS-compliant TVS for high-reliability bidirectional surge suppression where low clamping voltage, fast response (<1 ns), and stable thermal performance up to +150 °C junction temperature are critical selection criteria.
Technical Context
This bidirectional TVS operates symmetrically across both polarities, delivering identical clamping behavior during positive and negative transients. Its glass-passivated silicon junction ensures consistent avalanche breakdown and low incremental surge resistance, enabling reliable energy absorption under repetitive 0.01% duty-cycle surges.
The device is rated for 1500 W peak pulse power (10/1000 μs), with thermal resistance of 75 °C/W (junction-to-ambient) and 15 °C/W (junction-to-leads), supporting operation from –65 °C to +150 °C. It meets MSL Level 1 per J-STD-020 and is qualified to AEC-Q101 for automotive applications.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 15 V - Maximum continuous reverse working voltage before significant leakage; defines safe operating margin below clamping threshold. |
| VBR (Breakdown Voltage) | 16.7–18.5 V at 1 mA - Confirmed avalanche initiation range; ensures predictable turn-on during transient events. |
| VC (Clamping Voltage) | 21.2 V at 70.8 A IPPM - Peak voltage seen by protected circuit during worst-case 10/1000 μs surge; directly limits stress on downstream ICs. |
| PPPM (Peak Pulse Power) | 1500 W - Sustained surge energy handling capacity; enables protection against lightning-induced and inductive-switching transients. |
| IR (Reverse Leakage) | 1 μA max at 15 V - Ultra-low standby current preserves system power integrity and avoids false triggering. |
| TJ max | +150 °C - Enables deployment in under-hood automotive, industrial motor drives, and enclosed power supplies without derating concerns. |
| Package | SMC (DO-214AB) - Standardized surface-mount outline with 8.0 mm × 8.0 mm copper pad thermal management; supports automated assembly and high-power dissipation. |
Pinout & Package
Package: SMC (DO-214AB), surface-mount, bidirectional configuration with no polarity marking. Cathode/anode terminals are symmetrical; both leads serve as interchangeable surge-current paths.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Surge current entry (negative transient) | Accepts reverse-polarity surge energy; forms one half of symmetrical clamping path. |
| Cathode | Surge current entry (positive transient) | Accepts forward-polarity surge energy; forms complementary half of bidirectional clamping path. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping symmetry | Identical VBR, VC, and IPPM in both directions - eliminates need for orientation-aware layout and simplifies PCB routing for AC-coupled or floating signal lines. |
| AEC-Q101 qualification | Validated for automotive-grade reliability including temperature cycling, humidity bias, and mechanical shock - required for engine control units, ADAS sensors, and body electronics. |
| Halogen-free & RoHS-compliant (HM3) | Meets global environmental compliance mandates without compromising surge robustness or thermal stability - supports sustainable manufacturing and export compliance. |
| Low clamping ratio (VC/VBR ≈ 1.27) | Minimizes voltage overshoot during clamping - critical for protecting 3.3 V or 5 V logic interfaces, CAN transceivers, and precision analog front-ends. |
| MSL Level 1 rating | Unlimited floor life at ≤30 °C/60% RH - allows direct placement from dry pack without baking, reducing production overhead and moisture-related failures. |
Applications
| Automotive Sensor Protection | Industrial PLC I/O Protection |
|---|---|
Use Scenario: Protecting LIN/CAN bus nodes 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 at connector interface to shunt surge energy before it reaches MCU GPIO or signal conditioner ICs. Use Value: Maintains signal integrity under ISO 7637-2 Pulse 1/2/5a conditions while meeting AEC-Q101 lifetime requirements. |
Use Scenario: Safeguarding 24 V DC digital input modules in programmable logic controllers against field-wiring induced surges and relay coil flyback. IC Role / Device Role / Timing Role: Primary transient suppressor on terminal block side of optocoupler isolation barrier. Use Value: Limits transient voltage to <21.2 V, preventing damage to upstream Schmitt-trigger inputs and ensuring noise-immune state detection. |
| Telecom Power Rail Protection | Consumer USB Port ESD/Surge Guard |
Use Scenario: Secondary protection on -48 V DC telecom power distribution boards exposed to lightning-induced common-mode surges. IC Role / Device Role / Timing Role: Coordinated clamping device downstream of gas discharge tube (GDT) primary protectors. Use Value: Provides fast-response, low-clamp backup stage with 1500 W capability to handle residual energy after GDT crowbar action. |
Use Scenario: Bidirectional surge suppression on USB 2.0 D+/D− lines in set-top boxes and smart displays subjected to IEC 61000-4-5 line surges. IC Role / Device Role / Timing Role: Low-capacitance TVS (typ. <100 pF) placed immediately before USB transceiver ESD diodes. Use Value: Clamps differential surges to <21.2 V without distorting 480 Mbps data eye, preserving signal integrity and USB-IF compliance. |
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, SMB package (smaller thermal mass) | Not suitable for 1500 W surge events; limited to lower-energy IEC 61000-4-2/4-4 environments | Select only when board space is constrained and surge threat level is ≤600 W. |
| 1.5KE15CA | Through-hole DO-201 package, identical electrical specs, higher RθJA (100 °C/W) | Requires manual or wave soldering; unsuitable for fully SMT production or high-density layouts | Choose only for legacy through-hole designs or prototyping where reflow compatibility is not required. |
Compared with SMBJ15CA and 1.5KE15CA, the 1.5SMC15CAHM3_A/I delivers full 1500 W surge immunity in an AEC-Q101-qualified, halogen-free SMT package - making it the optimal choice for automotive, industrial, and telecom applications demanding both high power handling and production scalability.
Availability
1.5SMC15CAHM3_A/I is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial PLC I/O modules, and telecom power distribution systems requiring stable component supply, long-term lifecycle support, and AEC-Q101 compliance.
Supply support for 1.5SMC15CAHM3_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, power efficiency, and automotive-grade qualification.
The 1.5SMC Series was developed specifically for high-power, surface-mount transient suppression in harsh environments - targeting automotive, industrial, and telecom applications where AEC-Q101 compliance, low clamping voltage, and repeatable surge endurance are mandatory.
FAQ
What is the clamping voltage of the 1.5SMC15CAHM3_A/I under a 10/1000 μs surge?
The 1.5SMC15CAHM3_A/I has a maximum clamping voltage (VC) of 21.2 V at 70.8 A peak pulse current (IPPM) under the standardized 10/1000 μs waveform. This value is measured per Figure 1 in Vishay document 88303 and represents the upper voltage limit imposed on protected circuitry during worst-case transient events - critical for ensuring downstream ICs remain within absolute maximum ratings.
Is the 1.5SMC15CAHM3_A/I suitable for automotive applications?
Yes, the 1.5SMC15CAHM3_A/I is AEC-Q101 qualified and carries the HM3 suffix indicating halogen-free, RoHS-compliant construction validated for automotive use. It is explicitly rated for operation from –65 °C to +150 °C and tested for temperature cycling, mechanical shock, and humidity bias - making it appropriate for engine control units, ADAS camera modules, and body electronics where reliability under thermal and vibration stress is essential.
How does the bidirectional design of the 1.5SMC15CAHM3_A/I affect its PCB layout?
The 1.5SMC15CAHM3_A/I has no polarity marking and functions identically in both directions, so PCB layout requires no orientation alignment - either lead may connect to line or return. This simplifies routing for AC-coupled signals, differential buses (e.g., RS-485, CAN), or floating grounds, and eliminates risk of misplacement during automated assembly. The SMC (DO-214AB) footprint remains unchanged from unidirectional variants.
What is the thermal resistance of the 1.5SMC15CAHM3_A/I, and how does it impact power dissipation?
The 1.5SMC15CAHM3_A/I has a typical junction-to-ambient thermal resistance (RθJA) of 75 °C/W and junction-to-leads resistance (RθJL) of 15 °C/W when mounted on 8.0 mm × 8.0 mm copper pads. This enables 6.5 W steady-state power dissipation at TA = 50 °C and supports rapid heat transfer during transient events - ensuring junction temperature stays below 150 °C even during repetitive 1500 W surges with 0.01% duty cycle.
Does the 1.5SMC15CAHM3_A/I meet moisture sensitivity requirements for SMT assembly?
Yes, the 1.5SMC15CAHM3_A/I is rated MSL Level 1 per J-STD-020, meaning it has unlimited floor life at ≤30 °C/60% RH and can be placed directly from dry pack without baking. This eliminates moisture-related popcorning or delamination risks during reflow soldering - a key advantage for high-yield, high-volume SMT production lines handling automotive or industrial-grade assemblies.
1.5SMC15CAHM3_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):
- 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/I FAQ
1.How can I place an order for 1.5SMC15CAHM3_A/I through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5SMC15CAHM3_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 1.5SMC15CAHM3_A/I reliable?
The price and inventory of 1.5SMC15CAHM3_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 1.5SMC15CAHM3_A/I is usually 5 days.
3.What payment methods are accepted for 1.5SMC15CAHM3_A/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5SMC15CAHM3_A/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5SMC15CAHM3_A/I?
1.5SMC15CAHM3_A/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5SMC15CAHM3_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 1.5SMC15CAHM3_A/I?
For technical support, including 1.5SMC15CAHM3_A/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5SMC15CAHM3_A/I requirements.
6.How does Aetrix verify that 1.5SMC15CAHM3_A/I is sourced from the original manufacturer or authorized distributors?
All 1.5SMC15CAHM3_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 1.5SMC15CAHM3_A/I meets industry standards.
7.What is the process for return or replacement of 1.5SMC15CAHM3_A/I?
All 1.5SMC15CAHM3_A/I units undergo pre-shipment inspection (PSI). If there is an issue with 1.5SMC15CAHM3_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 1.5SMC15CAHM3_A/I part is unused and in its original packaging.
Return procedure for 1.5SMC15CAHM3_A/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5SMC15CAHM3_A/I Tags
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