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Vishay General Semiconductor - Diodes Division 1.5SMC150CA-M3/9AT
- Part No.:
- 1.5SMC150CA-M3/9AT
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
1.5SMC150CA-M3/9AT.pdf
- Description:
- TVS DIODE 128VWM 207VC SMC
- Quantity:
- Payment:
- Shipping:
Inventory:2,309
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Product details
Overview
1.5SMC150CA-M3/9AT 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 delivers 1500 W peak pulse power (10/1000 µs), clamps at 207 V under 7.2 A peak pulse current, and features a 128 V standoff voltage with ≤1 µA leakage at 25 °C - deployed in automotive sensor interfaces, industrial I/O modules, and telecom line cards.
For engineers reviewing the 1.5SMC150CA-M3/9AT datasheet, 1.5SMC150CA-M3/9AT pinout, 1.5SMC150CA-M3/9AT application, or 1.5SMC150CA-M3/9AT equivalent, key selection criteria include bidirectional clamping capability, SMC (DO-214AB) package compatibility, AEC-Q101 qualification status, thermal resistance (RθJA = 75 °C/W), and compliance with UL 497B surge protector classification.
Technical Context
This device operates as a voltage-clamped crowbar during transient events, leveraging an avalanche breakdown mechanism to divert surge energy away from downstream circuitry. Its bidirectional symmetry ensures identical clamping behavior in both polarities, eliminating polarity-sensitive layout constraints.
Designed for high-reliability environments, it supports repetitive 10/1000 µs surges at 0.01% duty cycle and meets J-STD-020 MSL Level 1 (260 °C reflow peak). The glass-passivated junction and halogen-free, RoHS-compliant M3 construction ensure long-term stability under thermal cycling and automotive-grade stress conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Pulse Power (10/1000 µs) | 1500 W - sustains single-event lightning-induced transients per IEC 61000-4-5 without degradation |
| Standoff Voltage (VWM) | 128 V - maximum continuous reverse operating voltage before significant leakage begins |
| Clamping Voltage (VC @ IPPM) | 207 V at 7.2 A - limits voltage seen by protected ICs during worst-case surge conditions |
| Breakdown Voltage (VBR) | 143–158 V @ 1 mA - defines the onset of avalanche conduction in either direction |
| Leakage Current (ID) | ≤1 µA at 128 V - negligible standby power loss and minimal impact on high-impedance signal paths |
| Package | SMC (DO-214AB) - industry-standard surface-mount outline with 8.0 mm × 8.0 mm copper pad thermal relief |
| Junction Temperature Range | −65 °C to +150 °C - enables operation in under-hood automotive and industrial ambient extremes |
Pinout & Package
Package: SMC (DO-214AB), molded plastic case with matte tin-plated leads solderable per J-STD-002 and JESD 22-B102; meets UL 94 V-0 flammability rating.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry terminal in forward bias; one side of symmetrical bidirectional structure | No polarity marking required - terminals are functionally identical for AC-coupled or floating-line protection |
| Cathode | Current exit terminal in forward bias; second side of symmetrical bidirectional structure | Same physical terminal as Anode - bidirectional operation means both ends behave identically under reverse or forward surge |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC lines, differential buses, or ungrounded signal pairs without polarity concerns |
| 1500 W peak pulse power | Handles IEC 61000-4-5 Level 4 (4 kV) surges on 50 Ω source impedance with margin |
| Halogen-free, RoHS-compliant (M3) | Meets environmental compliance requirements for automotive and industrial end-equipment without compromising reliability |
| MSL Level 1 moisture sensitivity | Allows standard SMT reflow without baking or special handling - reduces manufacturing overhead |
| UL 497B recognized (QVGQ2) | Validates suitability for telecom and industrial surge protection systems requiring third-party safety certification |
Applications
| Automotive Sensor Interface | Industrial PLC Analog Input |
|---|---|
Use Scenario: Protecting CAN/LIN bus transceivers and temperature/pressure sensors from load dump and ESD in engine control units. IC Role / Device Role / Timing Role: Bidirectional TVS placed across sensor supply and ground to clamp transients before they reach ASIC inputs. Use Value: Prevents latch-up or permanent damage to microcontrollers and analog front-ends during ISO 7637-2 pulse 5a events. |
Use Scenario: Safeguarding 4–20 mA current loop receivers and ADC inputs in programmable logic controllers exposed to field wiring surges. IC Role / Device Role / Timing Role: Standoff-connected TVS shunting induced transients on input terminals to earth or chassis ground. Use Value: Maintains signal integrity and avoids system resets during IEC 61000-4-4 EFT bursts on industrial fieldbus connections. |
| Telecom Line Card Protection | Consumer Power Adapter Output |
Use Scenario: Shielding Ethernet PHYs and PoE injectors from lightning-induced surges on twisted-pair cabling. IC Role / Device Role / Timing Role: Common-mode TVS pair (one per line) referenced to chassis ground in RJ45 connector area. Use Value: Limits common-mode voltage excursion to <207 V, preserving isolation barrier integrity and preventing PHY latch-up. |
Use Scenario: Secondary-side overvoltage suppression on 12 V/24 V DC outputs of wall adapters used in smart home hubs. IC Role / Device Role / Timing Role: Bidirectional clamp between output rail and return, absorbing capacitor discharge or regulator fault energy. Use Value: Avoids downstream component overstress during output short-circuit recovery or feedback loop failure. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ150CA | Lower peak pulse power (600 W), same VWM/VC ratings, SMB (DO-214AA) package - 30% smaller footprint, higher RθJA (100 °C/W) | Suitable only for lower-energy transients (IEC 61000-4-5 Level 2); not recommended for automotive load dump | Select when board space is constrained and surge threat level is moderate (e.g., consumer USB ports) |
| 1.5KE150CA | Through-hole TO-204AE (DO-15) package, identical electrical specs but 3× higher RθJA (125 °C/W), no MSL rating | Requires wave soldering; unsuitable for automated SMT lines or high-density PCBs | Choose only for legacy through-hole designs or prototyping where reflow compatibility is not required |
Compared with SMBJ150CA and 1.5KE150CA, the 1.5SMC150CA-M3/9AT uniquely balances high-energy surge handling (1500 W), SMT manufacturability, MSL Level 1 process compatibility, and halogen-free compliance - making it the preferred choice for volume automotive and industrial production.
Availability
1.5SMC150CA-M3/9AT is available at Aetrix Electronics and suitable for automotive electronics, industrial I/O modules, and telecom infrastructure requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for 1.5SMC150CA-M3/9AT 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, efficiency, and application-specific optimization.
The 1.5SMC Series targets high-power transient suppression in harsh environments, engineered for automotive AEC-Q101 compliance, industrial surge immunity, and telecom safety certification - prioritizing clamping precision, thermal robustness, and SMT scalability.
FAQ
What is the clamping voltage of the 1.5SMC150CA-M3/9AT under maximum surge current?
The 1.5SMC150CA-M3/9AT clamps at 207 V when subjected to its rated peak pulse current of 7.2 A (10/1000 µs waveform). This value is measured per Figure 1 in Vishay document 88303 and represents the maximum voltage imposed on protected circuitry during worst-case transient events - critical for ensuring downstream ICs remain within absolute maximum ratings.
Is the 1.5SMC150CA-M3/9AT qualified for automotive applications?
The 1.5SMC150CA-M3/9AT itself is not AEC-Q101 qualified; the M3 suffix denotes halogen-free, RoHS-compliant commercial grade. For automotive use, Vishay specifies the HM3 variant (e.g., 1.5SMC150CAHM3_B/I), which adds AEC-Q101 qualification. Always verify ordering code suffixes against application safety requirements before design-in.
How does the bidirectional nature of the 1.5SMC150CA-M3/9AT affect PCB layout?
The 1.5SMC150CA-M3/9AT has no polarity marking and functions identically in both directions, simplifying layout for AC-coupled or floating lines. Unlike unidirectional TVS diodes, it eliminates orientation checks during placement and supports symmetric protection schemes - ideal for differential pairs, transformer-isolated interfaces, or ungrounded power rails.
What is the thermal resistance of the 1.5SMC150CA-M3/9AT in standard mounting conditions?
The 1.5SMC150CA-M3/9AT exhibits a typical junction-to-ambient thermal resistance (RθJA) of 75 °C/W when mounted on 0.31" × 0.31" (8.0 mm × 8.0 mm) copper pads per terminal, as defined in Vishay document 88303. This value assumes standard FR-4 PCB with no internal copper planes - derating is required for compact layouts or elevated ambient temperatures.
Does the 1.5SMC150CA-M3/9AT meet UL safety standards?
Yes - the 1.5SMC150CA-M3/9AT is UL Recognized under file E136766 for both unidirectional and bidirectional configurations, meeting UL 497B requirements for signal and power line protectors. This certification validates its performance in surge-rated equipment and supports regulatory compliance for industrial and telecom end products.
1.5SMC150CA-M3/9AT 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):
- 128V
- Voltage - Breakdown (Min):
- 143V
- Voltage - Clamping (Max) @ Ipp:
- 207V
- Current - Peak Pulse (10/1000µs):
- 7.2A
- Power - Peak Pulse:
- 1500W (1.5kW)
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -65°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AB (SMCJ)
1.5SMC150CA-M3/9AT FAQ
1.How can I place an order for 1.5SMC150CA-M3/9AT through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5SMC150CA-M3/9AT 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 1.5SMC150CA-M3/9AT reliable?
The price and inventory of 1.5SMC150CA-M3/9AT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5SMC150CA-M3/9AT is usually 5 days.
3.What payment methods are accepted for 1.5SMC150CA-M3/9AT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5SMC150CA-M3/9AT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5SMC150CA-M3/9AT?
1.5SMC150CA-M3/9AT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5SMC150CA-M3/9AT 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 1.5SMC150CA-M3/9AT?
For technical support, including 1.5SMC150CA-M3/9AT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5SMC150CA-M3/9AT requirements.
6.How does Aetrix verify that 1.5SMC150CA-M3/9AT is sourced from the original manufacturer or authorized distributors?
All 1.5SMC150CA-M3/9AT 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 1.5SMC150CA-M3/9AT meets industry standards.
7.What is the process for return or replacement of 1.5SMC150CA-M3/9AT?
All 1.5SMC150CA-M3/9AT units undergo pre-shipment inspection (PSI). If there is an issue with 1.5SMC150CA-M3/9AT, 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 1.5SMC150CA-M3/9AT part is unused and in its original packaging.
Return procedure for 1.5SMC150CA-M3/9AT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5SMC150CA-M3/9AT Tags
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