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Vishay General Semiconductor - Diodes Division 1.5SMC120CAHM3/H
- Part No.:
- 1.5SMC120CAHM3/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
1.5SMC120CAHM3/H.pdf
- Description:
- TVS DIODE 102VWM 165VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:7,844
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Product details
Overview
1.5SMC120CAHM3/H from Vishay General Semiconductor is a bidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMC (DO-214AB) package, designed for high-energy surge protection. It features 120 V standoff voltage (VWM), 137 V minimum breakdown voltage (VBR), 165 V maximum clamping voltage (VC) at 9.1 A peak pulse current (IPPM), and 1500 W peak pulse power (PPPM) with 10/1000 μs waveform - used to protect automotive sensor signal lines, industrial I/O ports, and telecom interface circuits against lightning-induced transients and inductive switching spikes.
For engineers reviewing the 1.5SMC120CAHM3/H datasheet, 1.5SMC120CAHM3/H pinout, 1.5SMC120CAHM3/H application, or 1.5SMC120CAHM3/H equivalent, key selection criteria include bidirectional clamping symmetry, AEC-Q101 qualification status, MSL Level 1 moisture sensitivity, halogen-free RoHS compliance, and thermal resistance (RθJA = 75 °C/W) under standard PCB pad layout conditions.
Technical Context
This device operates as a voltage-clamped shunt protector: during transient overvoltage events exceeding VBR, it avalanches rapidly to divert surge current away from downstream circuitry while maintaining VC ≤ 165 V. Its glass-passivated junction ensures stable breakdown characteristics and low leakage (<1 μA at VWM).
Designed for bidirectional operation, the 1.5SMC120CAHM3/H exhibits symmetrical clamping in both polarities - critical for AC-coupled or floating signal lines. It supports repetitive surges at 0.01% duty cycle and meets JESD201 Class 2 whisker resistance requirements with matte tin-plated leads.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off) | 102 V - maximum continuous reverse voltage before conduction begins; defines operating margin below clamping threshold |
| VBR (Breakdown) | 114–126 V at 1 mA - precise avalanche onset range ensuring predictable turn-on during transients |
| VC (Clamping) | 165 V at 9.1 A IPPM - peak voltage seen by protected circuit during worst-case 10/1000 μs surge |
| PPPM | 1500 W - surge energy handling capacity per IEEE C62.35-compliant 10/1000 μs waveform |
| RθJA | 75 °C/W - thermal resistance from junction to ambient on standard 8 mm × 8 mm copper pads |
| TJ max. | 150 °C - maximum junction temperature enabling reliable operation in under-hood automotive environments |
| MSL Level | Level 1 (per J-STD-020) - no floor life limitation; suitable for standard SMT reflow without dry pack |
Pinout & Package
Package: SMC (DO-214AB), surface-mount, halogen-free, RoHS-compliant, AEC-Q101 qualified. Dimensions: 7.11 mm × 6.22 mm × 2.62 mm (L × W × H); cathode band absent (bidirectional type).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Transient current sink (negative polarity) | Conducts surge current when voltage at this terminal falls ≥VBR below cathode potential |
| Cathode | Transient current sink (positive polarity) | Conducts surge current when voltage at this terminal rises ≥VBR above anode potential |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Identical VBR and VC performance in both directions - eliminates polarity concerns in AC or differential signal paths |
| AEC-Q101 qualification | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing - required for engine control, ADAS, and body electronics |
| Halogen-free construction | Meets IEC 61249-2-21 and JEDEC JS709C - supports environmental compliance in global OEM supply chains |
| Low incremental surge resistance | Enables tighter VC/VBR ratio (165 V / 114 V ≈ 1.45) - minimizes let-through voltage during fast-rising transients |
| MSL Level 1 rating | No bake requirement prior to reflow; compatible with standard SMT assembly lines without special handling |
Applications
| Automotive Sensor Protection | Industrial PLC I/O Protection |
|---|---|
Use Scenario: Protecting CAN FD and LIN bus transceivers from load dump and ISO 7637-2 pulses in vehicle cabin modules. IC Role / Device Role / Timing Role: Bidirectional shunt clamp placed across differential signal pair to limit common-mode surge voltage. Use Value: Clamps transients to ≤165 V within nanoseconds, preserving signal integrity and preventing transceiver latch-up or damage. |
Use Scenario: Safeguarding 24 V DC digital input channels in programmable logic controllers exposed to relay coil flyback and EFT bursts. IC Role / Device Role / Timing Role: Parallel-connected TVS absorbing >1 kV/500 A surges induced by inductive switching on field wiring. Use Value: Withstands 1500 W peak power and 0.01% duty cycle repetition - enables long-term reliability in factory automation environments. |
| Telecom Line Interface | Consumer Power Adapter ESD |
Use Scenario: Shielding Ethernet PHY front-end and PoE injectors from lightning-induced surges on outdoor cabling. IC Role / Device Role / Timing Role: Primary-level TVS on RJ45 magnetics secondary side, coordinated with GDT and MOV stages. Use Value: Symmetrical 102 V VWM allows use on center-tapped or transformer-isolated lines without polarity biasing. |
Use Scenario: Secondary-side transient suppression on USB-C and barrel jack inputs of smart home hubs and audio devices. IC Role / Device Role / Timing Role: Final-stage clamping element after primary fuse and common-mode choke. Use Value: Halogen-free, RoHS-compliant construction meets IEC 62368-1 end-product safety certification requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ120CA | Lower PPPM (600 W), same VWM (102 V), SMB package (smaller footprint, higher RθJA) | Limited to lower-energy surges; unsuitable for ISO 7637-2 Pulse 5a testing | Select when board space is constrained and surge threat level is ≤600 W |
| 1.5KE120CA | Through-hole DO-201 package, identical electrical specs but no AEC-Q101 or MSL Level 1 rating | Not qualified for automotive SMT production; requires wave solder or hand assembly | Choose only for legacy through-hole designs or non-automotive industrial use |
Compared with SMBJ120CA and 1.5KE120CA, the 1.5SMC120CAHM3/H delivers automotive-grade reliability in surface-mount form with full 1500 W surge capability - making it the only option qualified for AEC-Q101-compliant SMT production of next-generation vehicle electronics.
Availability
1.5SMC120CAHM3/H is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial PLC I/O modules, and telecom line protection requiring stable component supply, AEC-Q101 traceability, and halogen-free compliance.
Supply support for 1.5SMC120CAHM3/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, MOSFETs, and protection devices with emphasis on high-reliability, automotive-qualified components.
The 1.5SMC Series was developed specifically for robust, high-power transient suppression in harsh environments - targeting automotive, industrial, and telecom applications where failure due to voltage surges must be eliminated.
FAQ
What does the "HM3" suffix indicate in 1.5SMC120CAHM3/H?
The "HM3" suffix in 1.5SMC120CAHM3/H denotes halogen-free, RoHS-compliant construction with AEC-Q101 qualification. The "H" indicates 7-inch tape-and-reel packaging (850 units per reel), and "M3" confirms compliance with JEDEC JS709C halogen-free standards - critical for automotive Tier 1 suppliers and green electronics initiatives.
Is 1.5SMC120CAHM3/H unidirectional or bidirectional?
The 1.5SMC120CAHM3/H is a bidirectional TVS diode, as confirmed by the "CA" suffix in its part number. It provides symmetrical clamping behavior in both polarities, with identical VBR (114–126 V), VWM (102 V), and VC (165 V) specifications regardless of voltage polarity - ideal for protecting AC-coupled or floating signal lines.
Does 1.5SMC120CAHM3/H meet AEC-Q101 requirements?
Yes, 1.5SMC120CAHM3/H is AEC-Q101 qualified, as explicitly stated in the Vishay datasheet revision 09-Mar-2026 (Document Number: 88303). This qualification covers stress tests including temperature cycling, high-temperature reverse bias (HTRB), and ESD - validating its suitability for automotive powertrain, chassis, and body electronics applications.
What is the maximum clamping voltage of 1.5SMC120CAHM3/H at rated surge current?
The maximum clamping voltage (VC) of 1.5SMC120CAHM3/H is 165 V, measured at 9.1 A peak pulse current (IPPM) using the standard 10/1000 μs double-exponential waveform. This value represents the highest voltage imposed on protected circuitry during worst-case transient events, directly determining system-level surge immunity margins.
Can 1.5SMC120CAHM3/H be used in place of 1.5SMC120A?
No - 1.5SMC120A is unidirectional, while 1.5SMC120CAHM3/H is bidirectional. Substituting them would compromise protection on negative-going transients. The "CA" suffix is mandatory for bidirectional function; replacing it with "A" removes symmetrical clamping capability and invalidates design intent for AC or differential signal protection.
1.5SMC120CAHM3/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:
- Discontinued at Digi-Key
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- 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)
1.5SMC120CAHM3/H FAQ
1.How can I place an order for 1.5SMC120CAHM3/H through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5SMC120CAHM3/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 1.5SMC120CAHM3/H reliable?
The price and inventory of 1.5SMC120CAHM3/H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5SMC120CAHM3/H is usually 5 days.
3.What payment methods are accepted for 1.5SMC120CAHM3/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5SMC120CAHM3/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5SMC120CAHM3/H?
1.5SMC120CAHM3/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5SMC120CAHM3/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 1.5SMC120CAHM3/H?
For technical support, including 1.5SMC120CAHM3/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5SMC120CAHM3/H requirements.
6.How does Aetrix verify that 1.5SMC120CAHM3/H is sourced from the original manufacturer or authorized distributors?
All 1.5SMC120CAHM3/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 1.5SMC120CAHM3/H meets industry standards.
7.What is the process for return or replacement of 1.5SMC120CAHM3/H?
All 1.5SMC120CAHM3/H units undergo pre-shipment inspection (PSI). If there is an issue with 1.5SMC120CAHM3/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 1.5SMC120CAHM3/H part is unused and in its original packaging.
Return procedure for 1.5SMC120CAHM3/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5SMC120CAHM3/H Tags
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