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Vishay General Semiconductor - Diodes Division SMBG150CA-M3/5B
- Part No.:
- SMBG150CA-M3/5B
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-215AA, SMB Gull Wing
- Datasheet:
-
SMBG150CA-M3/5B.pdf
- Description:
- TVS DIODE 150VWM 243VC DO215AA
- Quantity:
- Payment:
- Shipping:
Inventory:4,199
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Product details
Overview
SMBG150CA-M3/5B from Vishay General Semiconductor is a bidirectional transient voltage suppressor (TVS) diode in SMBG (DO-215AA) package, designed for robust overvoltage protection of signal and power lines. It features a 150 V stand-off voltage (VWM), 167–185 V breakdown voltage (VBR) at 1 mA, 600 W peak pulse power (10/1000 µs), clamping voltage of 243 V at 2.5 A, and AEC-Q101 qualification for automotive-grade reliability.
For engineers reviewing the SMBG150CA-M3/5B datasheet, SMBG150CA-M3/5B pinout, SMBG150CA-M3/5B application, or SMBG150CA-M3/5B equivalent, key selection criteria include bidirectional surge clamping performance, junction temperature range (−55 °C to +150 °C), low incremental surge resistance, UL 497B recognition, and halogen-free RoHS compliance per M3 suffix.
Technical Context
This TVS diode operates symmetrically in both directions due to its bidirectional construction, enabling suppression of positive and negative transients without polarity sensitivity. Its glass-passivated junction ensures stable breakdown characteristics and fast response time (<1 ns), while the low thermal resistance (RθJL = 20 °C/W) supports reliable energy dissipation during repetitive surges.
The device complies with ANSI/IEEE C62.35 for surge protector ratings and meets JESD201 Class 2 whisker resistance. Its M3 suffix confirms halogen-free, RoHS-compliant materials and industrial-grade qualification - distinct from HE3/HM3 variants which add AEC-Q101 certification (not claimed for this specific M3/5B variant).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 150 V - Maximum continuous reverse operating voltage before clamping begins; defines safe working margin for 12 V–48 V bus systems. |
| VBR (min/max) | 167 V / 185 V at IT = 1 mA - Tight breakdown tolerance ensures predictable turn-on across temperature and production lots. |
| VC @ IPPM | 243 V at 2.5 A (10/1000 µs) - Clamping voltage limits downstream component stress during ESD or lightning-induced surges. |
| PPPM | 600 W - Peak pulse power handling capability enables protection against IEC 61000-4-5 Level 4 (4 kV/2 Ω) surges on DC lines. |
| ID @ VWM | 1.0 µA - Ultra-low leakage preserves signal integrity and battery life in always-on sensor interfaces. |
| TJ Range | −55 °C to +150 °C - Extended junction temperature rating supports under-hood automotive and industrial motor control environments. |
| Package | SMBG (DO-215AA) - Surface-mount gull-wing package optimized for automated placement and high thermal transfer via copper pad layout. |
Pinout & Package
Package: SMBG (DO-215AA), molded case with matte tin-plated leads, UL 94 V-0 rated compound, 0.255" × 0.155" footprint, 0.030" lead thickness, and 0.083" body width. Polarity: unmarked - bidirectional operation requires no cathode/anode orientation during placement.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (symmetrical) | Transient current path | Both terminals function identically; surge current flows bidirectionally through the same junction structure. |
| Leads (gull-wing) | Thermal and electrical interface | Matte tin plating ensures solderability per J-STD-002; 0.2" × 0.2" copper pads required for full 600 W rating. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC-coupled or floating signal lines (e.g., CAN, LIN, RS-485) without external polarity management. |
| 600 W peak pulse power | Supports repeated exposure to IEC 61000-4-5 surge events up to 4 kV open-circuit voltage with 2 Ω source impedance. |
| AEC-Q101 qualified base variant | While SMBG150CA-M3/5B itself carries M3 (halogen-free industrial), its HM3 counterpart is AEC-Q101 qualified - confirming underlying die/process suitability for automotive use. |
| UL 497B recognized | Validated for telecom and industrial signal line protection per Underwriters Laboratories' protector classification standard QVGQ2. |
| MSL Level 1 | Zero floor life limitation - can be mounted directly after removal from sealed packaging without baking or dry-pack requirements. |
Applications
| Automotive Power Line Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting 12 V/24 V power rails in engine control units (ECUs) and body electronics from load dump and inductive switching transients. IC Role / Device Role / Timing Role: Primary clamping element placed upstream of DC-DC converters and microcontrollers to limit voltage excursions below 243 V. Use Value: Prevents latch-up or permanent damage to downstream ICs during ISO 7637-2 Pulse 5a (load dump) events up to 60 V peak. | Use Scenario: Shielding analog and digital sensor outputs (e.g., pressure, temperature, position) in factory automation equipment from ESD and cable discharge events. IC Role / Device Role / Timing Role: Low-capacitance (<50 pF typical at 0 V) shunt clamp on differential or single-ended sensor lines. Use Value: Maintains signal fidelity while suppressing ±8 kV contact ESD (IEC 61000-4-2) without distorting millivolt-level sensor signals. |
| Telecom Data Line Surge Suppression | Consumer Device USB/Power Port Protection |
Use Scenario: Safeguarding RS-485 transceivers and Ethernet PHYs in outdoor base stations and network infrastructure from lightning-induced surges. IC Role / Device Role / Timing Role: First-line bidirectional transient suppressor on twisted-pair data lines, paired with common-mode chokes. Use Value: Clamps common-mode surges to <243 V within nanoseconds, preserving data integrity during IEC 61000-4-5 Level 3 (2 kV) tests. | Use Scenario: Hardening USB Type-C and 5 V/9 V power input ports in smart home hubs and portable audio devices against user-handling ESD. IC Role / Device Role / Timing Role: Standoff-rated (150 V) TVS placed between VBUS and GND to absorb fast-rising transients before they reach USB PD controllers. Use Value: Enables pass/fail compliance with IEC 61000-4-2 Level 4 (±15 kV air, ±8 kV contact) without derating or additional series impedance. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBG150CA-E3/5B | Same electrical specs; E3 suffix indicates RoHS-compliant industrial grade with standard tin plating (non-halogen-free). | No AEC-Q101 qualification; not rated for automotive under-hood use where halogen-free or whisker resistance is mandated. | Select E3/5B for cost-sensitive industrial controls where halogen-free material is not required. |
| SMBG150CAHM3/5B | Identical electrical and mechanical specs; HM3 suffix adds AEC-Q101 qualification and halogen-free compliance. | Approved for automotive powertrain and chassis modules requiring full PPAP documentation and extended temperature validation. | Choose HM3/5B when automotive OEM compliance (e.g., Ford WDC 1550, GM GP12) is mandatory. |
Compared with SMBG150CA-E3/5B and SMBG150CAHM3/5B, the SMBG150CA-M3/5B provides halogen-free materials and industrial-grade reliability without AEC-Q101 validation - making it optimal for non-automotive, environmentally regulated industrial designs where RoHS and material content reporting are critical.
Availability
SMBG150CA-M3/5B is available at Aetrix Electronics and suitable for automotive body electronics, industrial PLC I/O modules, telecom base station interfaces, and consumer power adapter protection requiring stable component supply and halogen-free compliance.
Supply support for SMBG150CA-M3/5B 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 application-specific optimization.
The SMBG series was developed to deliver high-power, surface-mount TVS protection in compact gull-wing packages for space-constrained automotive and industrial systems requiring repeatable surge immunity and long-term stability.
FAQ
What is the clamping voltage of SMBG150CA-M3/5B at its rated peak pulse current?
The SMBG150CA-M3/5B has a maximum clamping voltage (VC) of 243 V when subjected to its peak pulse current (IPPM) of 2.5 A under the standard 10/1000 µs waveform. This value is measured per Figure 1 in Vishay document 88456 and defines the upper voltage limit imposed on protected circuits during surge events - critical for ensuring downstream ICs remain within absolute maximum ratings.
Is SMBG150CA-M3/5B suitable for automotive applications?
SMBG150CA-M3/5B is halogen-free, RoHS-compliant, and built on an AEC-Q101-qualified platform, but the M3/5B variant itself is not individually certified to AEC-Q101. For production automotive use - especially in powertrain or safety-critical domains - the SMBG150CAHM3/5B variant must be selected. SMBG150CA-M3/5B remains appropriate for non-safety automotive body electronics where halogen-free compliance is required but formal AEC-Q101 validation is not mandated.
What does the "CA" suffix indicate in SMBG150CA-M3/5B?
The "CA" suffix in SMBG150CA-M3/5B denotes a bidirectional transient voltage suppressor configuration. Unlike unidirectional "A" variants (e.g., SMBG150A), the CA version provides symmetrical clamping for both positive and negative transients - essential for protecting AC-coupled lines, differential buses like CAN or RS-485, and floating sensor outputs without polarity constraints.
How does the SMBG (DO-215AA) package compare to SMA (DO-214AC) in thermal performance?
The SMBG (DO-215AA) package used by SMBG150CA-M3/5B offers lower thermal resistance than SMA (DO-214AC): RθJL = 20 °C/W vs. ~30–35 °C/W for SMA. Its wider lead frame and optimized copper pad layout (0.2" × 0.2") enable more efficient heat extraction during repetitive 600 W surges - improving reliability in high-duty-cycle industrial environments where sustained transient activity occurs.
Does SMBG150CA-M3/5B require special PCB layout considerations?
Yes - SMBG150CA-M3/5B requires minimum 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads on each terminal to achieve its rated 600 W peak pulse power. Smaller pads cause thermal derating per Figure 2 in Vishay document 88456. Additionally, short, direct traces to ground/power planes minimize inductance and preserve sub-nanosecond response; avoid vias or narrow traces between the SMBG150CA-M3/5B and protected node.
SMBG150CA-M3/5B Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-215AA, SMB 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):
- 2.5A
- Power - Peak Pulse:
- 600W
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -65°C ~ 175°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AA (SMBG)
SMBG150CA-M3/5B FAQ
1.How can I place an order for SMBG150CA-M3/5B through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBG150CA-M3/5B 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 SMBG150CA-M3/5B reliable?
The price and inventory of SMBG150CA-M3/5B are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBG150CA-M3/5B is usually 5 days.
3.What payment methods are accepted for SMBG150CA-M3/5B?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBG150CA-M3/5B transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBG150CA-M3/5B?
SMBG150CA-M3/5B orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBG150CA-M3/5B 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 SMBG150CA-M3/5B?
For technical support, including SMBG150CA-M3/5B datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBG150CA-M3/5B requirements.
6.How does Aetrix verify that SMBG150CA-M3/5B is sourced from the original manufacturer or authorized distributors?
All SMBG150CA-M3/5B 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 SMBG150CA-M3/5B meets industry standards.
7.What is the process for return or replacement of SMBG150CA-M3/5B?
All SMBG150CA-M3/5B units undergo pre-shipment inspection (PSI). If there is an issue with SMBG150CA-M3/5B, 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 SMBG150CA-M3/5B part is unused and in its original packaging.
Return procedure for SMBG150CA-M3/5B:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBG150CA-M3/5B Tags
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Diodes Incorporated
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