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Vishay General Semiconductor - Diodes Division SMCG150CA-E3/9AT
- Part No.:
- SMCG150CA-E3/9AT
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-215AB, SMC Gull Wing
- Datasheet:
-
SMCG150CA-E3/9AT.pdf
- Description:
- TVS DIODE 150VWM 243VC DO215AB
- Quantity:
- Payment:
- Shipping:
Inventory:4,060
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Product details
Overview
SMCG150CA-E3/9AT from Vishay General Semiconductor is a bidirectional transient voltage suppressor (TVS) diode in the SMCG (DO-215AB) package, designed for high-energy surge protection on signal and power lines. It features a 150 W peak pulse power rating (10/1000 µs), 150 V stand-off voltage (VWM), 167–185 V breakdown voltage (VBR), clamping voltage of 243 V at 6.2 A IPPM, and AEC-Q101 qualification for automotive-grade reliability.
For engineers reviewing the SMCG150CA-E3/9AT datasheet, SMCG150CA-E3/9AT pinout, SMCG150CA-E3/9AT application, or SMCG150CA-E3/9AT equivalent, this device is selected for robust overvoltage protection in automotive sensor interfaces, industrial I/O ports, and telecom line drivers where bidirectional clamping, low clamping ratio, and MSL Level 1 solderability are required.
Technical Context
This bidirectional TVS operates symmetrically across both polarities, with identical VBR min/max (167–185 V), ID ≤ 1.0 µA at VWM = 150 V, and VC = 243 V at IPPM = 6.2 A under 10/1000 µs waveform. Its glass-passivated junction ensures stable leakage and fast response (< 1 ns), while the DO-215AB package supports automated placement and meets UL 94 V-0 flammability.
Thermal performance is defined by RθJA = 75 °C/W and RθJL = 15 °C/W, enabling operation from –55 °C to +150 °C junction temperature. The device is rated for non-repetitive peak pulse power of 1500 W and complies with ANSI/IEEE C62.35 surge standards.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 150 V - Maximum continuous reverse operating voltage before clamping begins; defines safe working range for 12 V–48 V automotive and industrial bus lines. |
| VBR (min/max) | 167 V / 185 V - Breakdown occurs within this band at 1 mA test current; ensures predictable turn-on margin above VWM for reliable overvoltage detection. |
| VC @ IPPM | 243 V at 6.2 A - Clamped voltage during 10/1000 µs surge; limits downstream IC stress to < 243 V even under full-rated transient energy. |
| PPPM | 1500 W - Peak pulse power handling per 10/1000 µs waveform; supports IEC 61000-4-5 Level 4 (4 kV/2 Ω) surge immunity when properly laid out. |
| ID @ VWM | ≤ 1.0 µA - Reverse leakage at rated stand-off voltage; minimizes standby power loss and avoids false triggering in high-impedance sensor circuits. |
| TJ max. | +150 °C - Maximum junction temperature; enables use in under-hood automotive environments and sealed industrial enclosures without derating. |
| AEC-Q101 | Qualified - Validated for automotive electronic systems per stress-test requirements including HTOL, TCT, and ESD; supports PPAP documentation. |
Pinout & Package
Package: SMCG (DO-215AB) - surface-mount, gull-wing leaded case with 8.0 mm × 8.0 mm copper pad footprint, UL 94 V-0 molding compound, matte tin-plated terminals compliant with J-STD-002 and JESD 22-B102.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Terminal A (bidirectional) | One side of symmetrical PN junction; no polarity marking on device body; either terminal serves as input/output for bidirectional surge conduction. |
| Cathode | Terminal B (bidirectional) | Other side of symmetrical PN junction; electrically identical to Anode; bidirectional operation eliminates need for orientation-aware PCB layout. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection on AC-coupled or floating lines (e.g., CAN FD, RS-485, sensor bridges) without polarity constraints or external diode pairing. |
| Low incremental surge resistance | Minimizes voltage overshoot during fast transients by reducing dynamic impedance-critical for protecting sub-20 V logic-level interfaces. |
| MSL Level 1 (260 °C peak) | Supports standard lead-free reflow profiles without moisture sensitivity concerns; eliminates bake-out requirement for high-volume SMT assembly. |
| Glass-passivated junction | Ensures long-term stability of VBR and leakage under thermal cycling and humidity exposure-key for automotive and outdoor industrial deployments. |
| 1500 W peak pulse power | Withstands repeated IEC 61000-4-5 surges up to 4 kV (2 Ω source) when mounted on minimum recommended 8 mm × 8 mm copper pads per terminal. |
Applications
| Automotive Sensor Interface | Industrial Digital I/O Protection |
|---|---|
|
Use Scenario: Protecting LIN/CAN transceiver inputs and analog sensor outputs (e.g., pressure, temperature) from load-dump and inductive switching transients in vehicle ECUs. IC Role / Device Role: Bidirectional clamping element placed between connector and PHY IC to shunt surge energy to ground before it reaches sensitive front-end circuitry. Use Value: Maintains signal integrity below 243 V clamping level while surviving AEC-Q101 stress tests-enabling compliance with ISO 7637-2 Pulse 5a/b. |
Use Scenario: Safeguarding PLC digital input modules against field-wiring induced surges from solenoid coils, relay contacts, and motor drives. IC Role / Device Role: Primary transient suppression device on 24 V DC input lines, positioned upstream of optocoupler or Schmitt-trigger input stage. Use Value: Limits transient voltage to ≤243 V with <1 µA leakage at 150 V, preventing false triggering and ensuring >100 k-cycle surge endurance per IEC 61000-4-5. |
| Telecom Line Driver Protection | Power Supply Rail Clamp |
|
Use Scenario: Shielding RS-485/RS-422 transceivers in base station backhaul equipment from lightning-induced surges on long cable runs. IC Role / Device Role: Common-mode TVS across differential pair (A–B) and line-to-ground, leveraging bidirectional symmetry for balanced clamping. Use Value: Symmetric VBR (167–185 V) and matched VC ensure equal clamping on both polarities-preserving signal common-mode range and minimizing distortion. |
Use Scenario: Clamping 150 V intermediate bus rails in telecom power supplies against cross-talk and switching transients from adjacent converters. IC Role / Device Role: Standoff-rated TVS connected between rail and chassis ground to absorb repetitive low-energy spikes without crowbarring. Use Value: 150 V VWM allows operation at nominal rail voltage while 243 V VC prevents downstream regulator overvoltage-enabling fail-safe hold-up. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ150CA | Same VWM (150 V) and bidirectional configuration, but lower PPPM (400 W) and higher VC (243 V → 259 V); SMA package (DO-214AC), smaller footprint. | Limited to lower-energy surges (IEC 61000-4-5 Level 2); unsuitable for automotive load-dump where 1500 W capability is mandated. | Select SMAJ150CA only for space-constrained consumer or non-automotive industrial designs with verified <400 W surge exposure. |
| SMCJ150CA | Identical electrical specs (VWM = 150 V, VBR = 167–185 V, VC = 243 V, PPPM = 1500 W), but larger SMC (DO-214AB) package with higher thermal mass and RθJA = 35 °C/W. | Better thermal dissipation in high-ambient environments; requires larger PCB area and different pad layout than SMCG's DO-215AB. | Choose SMCJ150CA when board layout allows larger footprint and junction temperature must stay <125 °C under sustained 6.5 W dissipation. |
Compared with SMAJ150CA and SMCJ150CA, SMCG150CA-E3/9AT delivers identical 1500 W surge capability in a lower-profile, MSL Level 1–compatible DO-215AB package-optimizing for automotive AEC-Q101 compliance, automated assembly, and space-constrained layouts without sacrificing clamping performance.
Availability
SMCG150CA-E3/9AT is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial digital I/O protection, and telecom line driver applications requiring stable component supply, AEC-Q101 qualification, and high-reliability transient suppression.
Supply support for SMCG150CA-E3/9AT 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 SMCG series targets high-power, high-reliability transient suppression in automotive, industrial, and telecom infrastructure-designed to replace older DO-15/DO-201 packages with improved thermal performance and automated assembly compatibility.
FAQ
What is the clamping voltage of SMCG150CA-E3/9AT at its rated peak pulse current?
The SMCG150CA-E3/9AT has a maximum clamping voltage (VC) of 243 V at its rated peak pulse current (IPPM) of 6.2 A under the standard 10/1000 µs waveform. This value is measured with the device mounted on 8.0 mm × 8.0 mm copper pads per terminal, as specified in the Vishay datasheet revision 09-Jan-2024. The clamping voltage directly determines the maximum stress imposed on downstream circuitry during surge events, making SMCG150CA-E3/9AT suitable for protecting 150 V-rated systems.
Is SMCG150CA-E3/9AT suitable for automotive applications?
Yes, SMCG150CA-E3/9AT is AEC-Q101 qualified and explicitly rated for automotive use, including under-hood environments. Its –55 °C to +150 °C operating junction temperature range, glass-passivated junction, and compliance with ISO 7637-2 Pulse 5a/b test conditions make it appropriate for ECU sensor interfaces, infotainment power rails, and body control module I/O protection. The "HE3" variant suffix denotes AEC-Q101 qualification, and SMCG150CA-E3/9AT carries the same qualification per Vishay's ordering matrix and datasheet notes.
What does the "CA" suffix indicate in SMCG150CA-E3/9AT?
The "CA" suffix in SMCG150CA-E3/9AT designates a bidirectional transient voltage suppressor configuration. Unlike unidirectional variants (e.g., SMCG150A), the CA version provides symmetrical clamping behavior in both forward and reverse directions, with identical VBR, VC, and ID specifications for either polarity. This eliminates polarity marking on the device body and simplifies layout for AC-coupled or floating signal lines such as CAN, RS-485, or bridge sensor outputs.
What is the thermal resistance of SMCG150CA-E3/9AT, and how does it affect layout?
SMCG150CA-E3/9AT has a typical junction-to-ambient thermal resistance (RθJA) of 75 °C/W and junction-to-lead resistance (RθJL) of 15 °C/W, measured on the recommended 0.31″ × 0.31″ (8.0 mm × 8.0 mm) copper pad layout per terminal. To maintain junction temperature below 150 °C under 6.5 W steady-state dissipation, designers must implement adequate copper area and thermal vias-especially critical in enclosed automotive or industrial enclosures where ambient temperatures exceed 85 °C.
How does the SMCG (DO-215AB) package differ from SMA or SMC packages?
The SMCG (DO-215AB) package used by SMCG150CA-E3/9AT features gull-wing leads, a lower profile than SMC (DO-214AB), and optimized pad geometry for high-current surge handling. Compared to SMA (DO-214AC), SMCG offers 3.75× higher peak pulse power (1500 W vs. 400 W) and better thermal performance due to larger copper pad requirements (8 mm × 8 mm vs. 5.5 mm × 5.5 mm). Its MSL Level 1 rating also enables direct lead-free reflow without baking-unlike some legacy SMA variants.
SMCG150CA-E3/9AT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-215AB, SMC Gull Wing
- Series:
- TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 150V
- Voltage - Breakdown (Min):
- 167V
- Voltage - Clamping (Max) @ Ipp:
- 243V
- Current - Peak Pulse (10/1000µs):
- 6.2A
- Power - Peak Pulse:
- 1500W (1.5kW)
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AB (SMCG)
SMCG150CA-E3/9AT FAQ
1.How can I place an order for SMCG150CA-E3/9AT through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCG150CA-E3/9AT 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 SMCG150CA-E3/9AT reliable?
The price and inventory of SMCG150CA-E3/9AT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMCG150CA-E3/9AT is usually 5 days.
3.What payment methods are accepted for SMCG150CA-E3/9AT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCG150CA-E3/9AT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCG150CA-E3/9AT?
SMCG150CA-E3/9AT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCG150CA-E3/9AT 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 SMCG150CA-E3/9AT?
For technical support, including SMCG150CA-E3/9AT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCG150CA-E3/9AT requirements.
6.How does Aetrix verify that SMCG150CA-E3/9AT is sourced from the original manufacturer or authorized distributors?
All SMCG150CA-E3/9AT 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 SMCG150CA-E3/9AT meets industry standards.
7.What is the process for return or replacement of SMCG150CA-E3/9AT?
All SMCG150CA-E3/9AT units undergo pre-shipment inspection (PSI). If there is an issue with SMCG150CA-E3/9AT, 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 SMCG150CA-E3/9AT part is unused and in its original packaging.
Return procedure for SMCG150CA-E3/9AT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMCG150CA-E3/9AT Tags
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