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Vishay General Semiconductor - Diodes Division 1.5SMC120AHM3_A/I
- Part No.:
- 1.5SMC120AHM3_A/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
1.5SMC120AHM3_A/I.pdf
- Description:
- TVS DIODE 102VWM 165VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:5,896
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Product details
Overview
1.5SMC120AHM3_A/I from Vishay General Semiconductor is a unidirectional transient voltage suppressor (TVS) diode designed for robust overvoltage protection in power and signal lines. It features a 120 V standoff voltage (VWM), 165 V maximum clamping voltage (VC) at 9.1 A peak pulse current, and 1500 W peak pulse power capability with a 10/1000 μs waveform - deployed in automotive power modules, industrial motor drives, and telecom DC input stages.
For engineers reviewing the 1.5SMC120AHM3_A/I datasheet, 1.5SMC120AHM3_A/I pinout, 1.5SMC120AHM3_A/I application, or 1.5SMC120AHM3_A/I equivalent, this device delivers AEC-Q101 qualification, halogen-free RoHS compliance, low incremental surge resistance, and fast response time critical for protecting MOSFETs, ICs, and sensor interfaces against lightning-induced transients and inductive switching surges.
Technical Context
This TVS diode operates as a unidirectional clamping device with cathode-band polarity marking, leveraging glass-passivated junction technology for stable breakdown behavior and high reliability under repetitive surge stress. Its thermal resistance (RθJL = 15 °C/W) and junction temperature rating (TJ max = 150 °C) support sustained operation in high-ambient environments such as engine control units and industrial PLCs.
The 1.5SMC120AHM3_A/I uses a DO-214AB (SMC) package with matte tin-plated leads compliant to J-STD-002 and JESD 22-B102, and meets MSL Level 1 per J-STD-020 with 260 °C reflow peak. It is rated for 200 A non-repetitive forward surge current (IFSM, 8.3 ms half-sine), enabling robust protection during high-energy fault events.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 102 V - Maximum continuous reverse operating voltage before clamping begins; defines safe DC/AC operating margin. |
| VBR (Breakdown Voltage) | 114–126 V at 1 mA - Confirmed avalanche initiation range; ensures predictable turn-on under transient stress. |
| VC (Clamping Voltage) | 165 V at IPPM = 9.1 A (10/1000 μs) - Peak voltage seen by protected circuit during worst-case surge; limits stress on downstream components. |
| PPPM (Peak Pulse Power) | 1500 W - Sustains high-energy transients without failure; validated per IEC 61000-4-5 level 4 requirements. |
| IFSM (Surge Current) | 200 A (8.3 ms half-sine) - Withstands high-current inrush events like load dump in 12 V automotive systems. |
| TJ max | 150 °C - Enables reliable operation in under-hood or enclosed industrial enclosures without derating penalties. |
| Package | SMC (DO-214AB) - Surface-mount footprint (7.75 mm × 6.22 mm) optimized for automated placement and thermal pad layout. |
Pinout & Package
Package: SMC (DO-214AB), molded case with matte tin-plated leads; cathode indicated by band marking on unidirectional devices.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Low-side connection point | Connected to ground or return path; forms clamping loop with cathode during reverse-biased surge event. |
| Cathode | High-side connection point | Connected to protected line (e.g., 12 V rail); conducts avalanche current when VLINE exceeds VWM. |
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, and body electronics. |
| Halogen-free & RoHS-compliant | HM3 suffix confirms halogen-free molding compound and lead finish - meets EU ELV and JEITA EG-02 standards for green manufacturing. |
| 1500 W peak pulse power | Handles IEC 61000-4-5 combination wave surges up to 4 kV/2 Ω without degradation - eliminates need for external series impedance in many designs. |
| Fast response time (< 1 ps) | Clamps within picoseconds of transient onset - protects sensitive gate oxides in MOSFETs and input stages of CAN/LIN transceivers. |
| Low incremental surge resistance | Minimizes clamping voltage overshoot during high-di/dt events - improves protection margin for 3.3 V/5 V logic interfaces. |
Applications
| Automotive Power Input Protection | Industrial Motor Drive DC Bus |
|---|---|
Use Scenario: Protecting 12 V battery-fed ECUs from load dump and jump-start transients per ISO 7637-2 pulse 5a. IC Role / Device Role / Timing Role: Unidirectional TVS placed between battery rail and upstream fuse or DC-DC converter input. Use Value: Clamps to ≤165 V during 160 V/350 ms load dump event, preventing damage to 36 V-rated input capacitors and controller ICs. |
Use Scenario: Safeguarding IGBT gate drivers and bus voltage sensors in variable-frequency drives exposed to regenerative braking spikes. IC Role / Device Role / Timing Role: Parallel-mounted across DC link capacitor terminals to absorb commutation-induced voltage overshoot. Use Value: Limits transient excursions to <170 V during 100 A/10 μs switching events, preserving isolation barrier integrity and ADC reference stability. |
| Telecom DC Power Feeds | Consumer Appliance Control Boards |
Use Scenario: Shielding PoE-powered equipment (e.g., IP cameras, access points) from induced surges on 48 V DC input lines. IC Role / Device Role / Timing Role: Primary-level TVS on secondary side of isolated DC-DC converter, upstream of hot-swap controller. Use Value: Maintains clamping below 200 V during 1 kV/500 Ω IEC 61000-4-5 surge test - avoids latch-up in PMICs and Ethernet PHYs. |
Use Scenario: Securing microcontroller I/O and relay coil suppression circuits in washing machines and HVAC controllers subjected to ESD and relay bounce. IC Role / Device Role / Timing Role: Localized TVS on 24 V control rail feeding solenoid drivers and optocoupler inputs. Use Value: Absorbs >1500 W energy from 100 mJ inductive kickback without parametric shift - extends board-level MTBF beyond 10 years. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ120A-E3/52 | Lower peak power (600 W), SMB package (smaller footprint, higher RθJA = 90 °C/W) | Not AEC-Q101 qualified; limited to commercial-grade consumer/industrial use | Select when space-constrained layouts prioritize size over automotive qualification and surge margin. |
| 1.5KE120A | Through-hole DO-201 package; same VWM/VC specs but lower IFSM (100 A vs. 200 A) | Lacks MSL-1 reflow rating and halogen-free compliance; unsuitable for automated SMT production | Choose only for legacy through-hole designs where rework tolerance and manual assembly are acceptable. |
Compared with SMBJ120A-E3/52 and 1.5KE120A, the 1.5SMC120AHM3_A/I provides superior surge endurance (1500 W vs. 600 W/1500 W), automotive qualification, and SMT-ready halogen-free construction - making it the preferred choice for new high-reliability power interface designs.
Availability
1.5SMC120AHM3_A/I is available at Aetrix Electronics and suitable for automotive electronic control units, industrial motor drive systems, and telecom power supply designs requiring stable component supply, long-term lifecycle assurance, and traceable sourcing.
Supply support for 1.5SMC120AHM3_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, and protection devices with emphasis on reliability, efficiency, and application-specific performance.
The 1.5SMC Series was developed to deliver high-power, surface-mount TVS solutions for harsh-environment applications - particularly targeting automotive, industrial, and telecom systems needing AEC-Q101 validation and repeatable clamping performance.
FAQ
What is the clamping voltage of the 1.5SMC120AHM3_A/I under standard 10/1000 μs surge conditions?
The 1.5SMC120AHM3_A/I exhibits a maximum clamping voltage (VC) of 165 V when subjected to its rated peak pulse current of 9.1 A using the standardized 10/1000 μs double-exponential waveform. This value is guaranteed across the full operating temperature range and reflects worst-case conduction behavior during transient suppression - critical for verifying voltage margin on protected ICs and passives.
Is the 1.5SMC120AHM3_A/I qualified for automotive applications?
Yes, the 1.5SMC120AHM3_A/I carries AEC-Q101 qualification, confirmed by Vishay's documentation for HM3-suffix variants in the 1.5SMC series. This includes stress testing for temperature cycling, high-temperature reverse bias (HTRB), and mechanical shock - validating its suitability for under-hood and chassis-mounted automotive electronics such as body control modules and ADAS power supplies.
What does the "HM3" suffix indicate in 1.5SMC120AHM3_A/I?
The "HM3" suffix in 1.5SMC120AHM3_A/I denotes halogen-free, RoHS-compliant construction with matte tin-plated leads meeting JESD 22-B102 solderability standards. It also signifies AEC-Q101 qualification and compliance with J-STD-020 MSL Level 1 handling - distinguishing it from commercial-grade "E3" or "M3" variants lacking automotive validation.
Can the 1.5SMC120AHM3_A/I be used in bidirectional configurations?
No, the 1.5SMC120AHM3_A/I is strictly a unidirectional TVS diode, as indicated by its "A" suffix and cathode-band marking. For bidirectional protection, Vishay specifies part numbers ending in "CA" (e.g., 1.5SMC120CA). Using the 1.5SMC120AHM3_A/I in reverse-biased AC applications would result in forward conduction and potential failure.
What is the thermal resistance from junction to leads (RθJL) for the 1.5SMC120AHM3_A/I?
The 1.5SMC120AHM3_A/I has a typical junction-to-leads thermal resistance (RθJL) of 15 °C/W, measured under standard mounting conditions on 8.0 mm × 8.0 mm copper pads. This low value enables efficient heat transfer to PCB copper during repetitive surge events - supporting sustained operation at elevated ambient temperatures without exceeding the 150 °C maximum junction limit.
1.5SMC120AHM3_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:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 102V
- Voltage - Breakdown (Min):
- 114V
- Voltage - Clamping (Max) @ Ipp:
- 165V
- Current - Peak Pulse (10/1000µs):
- 9.1A
- 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)
1.5SMC120AHM3_A/I FAQ
1.How can I place an order for 1.5SMC120AHM3_A/I through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5SMC120AHM3_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 1.5SMC120AHM3_A/I reliable?
The price and inventory of 1.5SMC120AHM3_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 1.5SMC120AHM3_A/I is usually 5 days.
3.What payment methods are accepted for 1.5SMC120AHM3_A/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5SMC120AHM3_A/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5SMC120AHM3_A/I?
1.5SMC120AHM3_A/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5SMC120AHM3_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 1.5SMC120AHM3_A/I?
For technical support, including 1.5SMC120AHM3_A/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5SMC120AHM3_A/I requirements.
6.How does Aetrix verify that 1.5SMC120AHM3_A/I is sourced from the original manufacturer or authorized distributors?
All 1.5SMC120AHM3_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 1.5SMC120AHM3_A/I meets industry standards.
7.What is the process for return or replacement of 1.5SMC120AHM3_A/I?
All 1.5SMC120AHM3_A/I units undergo pre-shipment inspection (PSI). If there is an issue with 1.5SMC120AHM3_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 1.5SMC120AHM3_A/I part is unused and in its original packaging.
Return procedure for 1.5SMC120AHM3_A/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5SMC120AHM3_A/I Tags
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