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Vishay General Semiconductor - Diodes Division SMBJ150CA-M3/52
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- Part No.:
- SMBJ150CA-M3/52
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ150CA-M3/52.pdf
- Description:
- TVS DIODE 150VWM 243VC DO214AA
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
SMBJ150CA-M3/52 from Vishay General Semiconductor is a bidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMB (DO-214AA) package, designed for clamping voltage transients on power and signal lines. It features a 150 V stand-off voltage (VWM), 167–185 V breakdown voltage (VBR) at 1 mA, 2.5 A peak pulse current (IPPM) under 10/1000 µs waveform, and 600 W peak pulse power dissipation - deployed to protect MOSFETs, ICs, and sensor interfaces in industrial power supplies and telecom line cards.
For engineers reviewing the SMBJ150CA-M3/52 datasheet, SMBJ150CA-M3/52 pinout, SMBJ150CA-M3/52 application, or SMBJ150CA-M3/52 equivalent, this page delivers verified electrical parameters, bidirectional clamping behavior, thermal derating curves, JEDEC-compliant SMB package dimensions, and AEC-Q101-qualified alternatives - all critical for surge protection layout validation and IEC 61000-4-5 compliance planning.
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 VBR tolerance (±5%) and low incremental surge resistance, while the 100 °C/W junction-to-ambient thermal resistance requires careful PCB copper pad design per Vishay's 5.0 mm × 5.0 mm recommendation.
The device complies with ANSI/IEEE C62.35 for transient suppressor definitions and meets UL 497B recognition (file E136766). With a maximum clamping voltage (VC) of 243 V at IPPM, it guarantees predictable overvoltage limiting during 10/1000 µs surges - essential for safeguarding 150 V-rated downstream components against lightning-induced or inductive-switching spikes.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 150 V - Maximum continuous reverse voltage before significant leakage; defines safe operating margin below system rail. |
| VBR (Breakdown Voltage) | 167–185 V at 1 mA - Tight tolerance ensures consistent turn-on across production lots; enables precise overvoltage threshold setting. |
| VC (Clamping Voltage) | 243 V at 2.5 A (10/1000 µs) - Absolute upper limit seen by protected circuit during surge; determines minimum voltage rating of downstream devices. |
| PPPM (Peak Pulse Power) | 600 W - Sustains single 10/1000 µs transients up to this energy level; derates linearly above 25 °C ambient per Fig. 2. |
| IPPM (Peak Pulse Current) | 2.5 A - Peak surge current capability under standard waveform; used with VC to compute worst-case power stress on protected node. |
| TJmax | 150 °C - Maximum junction temperature; constrains sustained power dissipation and PCB thermal design. |
| Package | SMB (DO-214AA) - Surface-mount outline with 5.59 mm × 4.06 mm footprint; compatible with automated pick-and-place and reflow profiles up to 260 °C peak. |
Pinout & Package
Package: SMB (DO-214AA), molded plastic case with matte tin-plated leads; meets UL 94 V-0 flammability rating and J-STD-002 solderability requirements. Polarity: unmarked for bidirectional operation - terminals are functionally identical.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode / Cathode (symmetrical) | Bidirectional transient conduction path | Both terminals serve as interchangeable surge current entry/exit points; no cathode band marking required. |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power (10/1000 µs) | Enables robust protection against IEC 61000-4-5 Level 3 (1 kV/2 kV) surges without thermal runaway. |
| Low clamping ratio (VC/VBR ≈ 1.45) | Minimizes overvoltage overshoot during clamping - critical for preserving 150 V-rated MOSFET gate oxides and logic inputs. |
| Halogen-free, RoHS-compliant (M3 suffix) | Meets IPC-1752A material declaration requirements and EU Directive 2015/863 for restricted substances. |
| MSL Level 1 (JEDEC J-STD-020) | Allows unlimited floor life and standard reflow without baking - reduces manufacturing overhead in high-volume assembly. |
| 150 °C maximum junction temperature | Supports operation in enclosed industrial enclosures with ambient temperatures up to 85 °C when mounted on recommended copper pads. |
Applications
| Industrial Motor Drives | Telecom Line Interface Cards |
|---|---|
|
Use Scenario: Protection of gate drivers and bus voltage sense circuits against switching transients from IGBTs and contactor coils. IC Role / Device Role / Timing Role: Bidirectional clamping element placed across DC bus or gate resistor networks to limit dV/dt-induced voltage spikes. Use Value: Prevents false triggering and latch-up in isolated gate drivers by holding transient excursions below 243 V - within safe margin of 300 V-rated isolation barriers. |
Use Scenario: Surge suppression on T1/E1 interface transformers and line-side PHY ICs exposed to lightning-induced common-mode transients. IC Role / Device Role / Timing Role: Primary-level TVS connected between transformer center-tap and ground to shunt longitudinal surges before reaching differential receiver inputs. Use Value: Maintains signal integrity during 10/700 µs telecom surges by clamping to ≤243 V - ensuring compliance with GR-1089-CORE Section 4.5.2.2.1. |
| Automotive Body Control Modules | AC-DC Power Supply Inputs |
|
Use Scenario: Protection of LIN bus transceivers and microcontroller I/O pins against load dump and ISO 7637-2 pulse 5a/b events. IC Role / Device Role / Timing Role: Secondary-stage TVS located after primary fuse and choke, absorbing residual energy not filtered upstream. Use Value: Survives repeated 12 V system load dump pulses (up to 60 V, 400 ms) due to low leakage (<1 µA at 150 V) and stable VBR drift (<0.108 %/°C). |
Use Scenario: Input-stage transient suppression on offline SMPS front-ends handling universal AC input (85–265 VAC). IC Role / Device Role / Timing Role: Parallel-connected TVS across bulk capacitor to clamp MOV failure modes and suppress fast-rising line transients. Use Value: Limits peak voltage to 243 V during 1.2/50 µs surges - preventing overvoltage stress on 400 V-rated electrolytic capacitors and bridge rectifiers. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ150CAHE3/52 | RoHS-compliant (E3), non-halogen-free; same electrical specs and SMB package. | Lacks halogen-free certification; acceptable where IPC-1752A halogen reporting is not mandated. | Select when cost sensitivity outweighs halogen-free requirement and AEC-Q101 qualification is unnecessary. |
| SMBJ150CAHM3/52 | Halogen-free, RoHS-compliant, and AEC-Q101 qualified; identical VWM, VBR, VC, PPPM. | Qualified for automotive underhood environments (−40 °C to +125 °C operating range); includes extended reliability testing. | Choose for automotive body electronics or industrial systems requiring AEC-Q101 validation and long-term supply assurance. |
Compared with SMBJ150CA-M3/52, the HE3 variant trades halogen-free status for lower unit cost in commercial applications, while the HM3 variant adds AEC-Q101 qualification and automotive traceability - making it suitable for safety-critical deployments where process consistency and failure rate data are mandatory.
Availability
SMBJ150CA-M3/52 is available at Aetrix Electronics and suitable for industrial motor drives, telecom line interface cards, automotive body control modules, and AC-DC power supply inputs requiring stable component supply, halogen-free compliance, and repeatable surge performance.
Supply support for SMBJ150CA-M3/52 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, precision, and application-specific optimization.
The SMBJ series targets board-level transient protection in space-constrained designs, delivering high-power clamping in low-profile surface-mount packages for industrial, telecom, and automotive electronics.
FAQ
What is the clamping voltage of SMBJ150CA-M3/52 at its rated peak pulse current?
The SMBJ150CA-M3/52 has a maximum clamping voltage (VC) of 243 V when subjected to its rated peak pulse current of 2.5 A under the standard 10/1000 µs waveform. This value is measured per ANSI/IEEE C62.35 and defines the highest voltage the protected circuit will experience during a surge event. The SMBJ150CA-M3/52 maintains this clamping performance across its full operating temperature range, with minimal variation due to its low VBR temperature coefficient of 0.108 %/°C.
Is SMBJ150CA-M3/52 suitable for automotive applications?
The SMBJ150CA-M3/52 itself is not AEC-Q101 qualified; it is a commercial-grade, halogen-free, RoHS-compliant part. However, Vishay offers the functionally identical SMBJ150CAHM3/52 variant - which carries AEC-Q101 qualification and is intended for automotive underhood and body electronics. For non-automotive industrial or telecom use, the SMBJ150CA-M3/52 provides full electrical equivalence and thermal performance, but users requiring automotive qualification must select the HM3-suffixed version. The SMBJ150CA-M3/52 remains appropriate for consumer and industrial applications where AEC-Q101 is not mandated.
How does the bidirectional nature of SMBJ150CA-M3/52 affect its placement on a PCB?
The SMBJ150CA-M3/52 is bidirectional, meaning it has no polarity marking and both terminals are electrically symmetrical - eliminating orientation concerns during placement. Unlike unidirectional TVS diodes, it can be installed without regard to anode/cathode alignment, simplifying automated assembly and reducing risk of misorientation defects. This symmetry also allows it to suppress both positive and negative transients equally, making it ideal for AC-coupled lines, transformer-coupled interfaces, or any node where voltage polarity reversal is possible. The SMBJ150CA-M3/52 achieves this via internal back-to-back diode construction, confirmed in Vishay's "DEVICES FOR BIDIRECTION APPLICATIONS" section.
What is the thermal resistance and how does it impact layout for SMBJ150CA-M3/52?
The SMBJ150CA-M3/52 has a typical junction-to-ambient thermal resistance (RθJA) of 100 °C/W when mounted on the minimum recommended 5.0 mm × 5.0 mm copper pads per terminal, per Vishay's datasheet Figure 2 and mechanical notes. This value assumes no additional heatsinking; exceeding 5.0 W continuous power dissipation (PD) will cause rapid junction temperature rise. To maintain reliable operation at elevated ambient temperatures, designers must allocate sufficient copper area and consider thermal vias beneath the SMB pads. The SMBJ150CA-M3/52's RθJL of 20 °C/W further indicates that lead-to-board conduction dominates heat transfer - reinforcing the need for robust pad-to-plane connections.
Does SMBJ150CA-M3/52 meet UL recognition requirements?
Yes, the SMBJ150CA-M3/52 is UL-recognized under file E136766 for both unidirectional and bidirectional transient protectors per UL 497B, covering applications in telecommunications and industrial equipment. This recognition applies to the entire SMBJ family, including the CA-suffixed bidirectional variants like SMBJ150CA-M3/52. The device is rated for use in secondary circuits and carries Underwriters Laboratories' QVGQ2 classification. UL recognition confirms compliance with safety standards for dielectric strength, flammability (UL 94 V-0), and surge endurance - supporting regulatory submissions for end equipment in North America and other UL-accepting markets. The SMBJ150CA-M3/52 bears no separate UL mark on the package, as recognition is granted at the family level.
SMBJ150CA-M3/52 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AA, SMB
- 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:
- -55°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AA (SMBJ)
SMBJ150CA-M3/52 FAQ
1.How can I place an order for SMBJ150CA-M3/52 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ150CA-M3/52 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 SMBJ150CA-M3/52 reliable?
The price and inventory of SMBJ150CA-M3/52 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBJ150CA-M3/52 is usually 5 days.
3.What payment methods are accepted for SMBJ150CA-M3/52?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ150CA-M3/52 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ150CA-M3/52?
SMBJ150CA-M3/52 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ150CA-M3/52 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 SMBJ150CA-M3/52?
For technical support, including SMBJ150CA-M3/52 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ150CA-M3/52 requirements.
6.How does Aetrix verify that SMBJ150CA-M3/52 is sourced from the original manufacturer or authorized distributors?
All SMBJ150CA-M3/52 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 SMBJ150CA-M3/52 meets industry standards.
7.What is the process for return or replacement of SMBJ150CA-M3/52?
All SMBJ150CA-M3/52 units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ150CA-M3/52, 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 SMBJ150CA-M3/52 part is unused and in its original packaging.
Return procedure for SMBJ150CA-M3/52:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBJ150CA-M3/52 Tags
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