My Inquiry
My Account
Vishay General Semiconductor - Diodes Division SMBJ150CA-M3/5B
;;2.jpg)
- Part No.:
- SMBJ150CA-M3/5B
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ150CA-M3/5B.pdf
- Description:
- TVS DIODE 150VWM 243VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:9,803
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
SMBJ150CA-M3/5B from Vishay General Semiconductor is a bidirectional surface-mount Transient Voltage Suppressor (TVS) diode in the SMB (DO-214AA) package, designed for clamping voltage transients on power and signal lines. It features a 150 V stand-off voltage (VWM), 243 V maximum clamping voltage (VC) at 2.5 A peak pulse current (IPPM), and 600 W peak pulse power capability with a 10/1000 µs waveform - deployed in industrial motor drives, telecom power supplies, and sensor interface protection.
For engineers reviewing the SMBJ150CA-M3/5B datasheet, SMBJ150CA-M3/5B pinout, SMBJ150CA-M3/5B application, or SMBJ150CA-M3/5B equivalent, key selection criteria include bidirectional clamping symmetry, low thermal resistance (RθJL = 20 °C/W), MSL Level 1 moisture sensitivity, and halogen-free RoHS compliance per Vishay's M3 suffix designation.
Technical Context
This device operates as a voltage-clamping protector using an avalanche breakdown mechanism, with symmetrical reverse/forward breakdown characteristics due to its bidirectional construction. Its 167–185 V breakdown voltage range (VBR) at 1 mA test current ensures consistent triggering across temperature and manufacturing variance.
The SMBJ150CA-M3/5B delivers fast transient response (<1 ns) and low incremental surge resistance, enabling effective suppression of ESD, lightning-induced surges, and inductive switching spikes. It meets UL 497B recognition and is rated for operation from –55 °C to +150 °C junction temperature.
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 clamping threshold. |
| VBR (Breakdown Voltage) | 167–185 V at 1 mA - Guaranteed avalanche initiation range; ensures reliable turn-on during overvoltage events. |
| VC (Clamping Voltage) | 243 V at IPPM = 2.5 A (10/1000 µs) - Peak voltage seen by protected circuit during worst-case surge; determines stress on downstream components. |
| PPPM (Peak Pulse Power) | 600 W - Sustained energy-handling capacity under standardized 10/1000 µs surge; validates robustness against IEC 61000-4-5 threats. |
| ID (Reverse Leakage) | 1.0 µA max at VWM - Minimal standby power loss and signal integrity impact in high-impedance circuits. |
| TJ max | +150 °C - Enables use in thermally demanding environments such as enclosed industrial power modules or automotive under-hood applications. |
| Package | SMB (DO-214AA) - Surface-mount footprint with 5.59 mm × 4.06 mm body; supports automated placement and meets IPC-7351B standard pad layout. |
Pinout & Package
Package: SMB (DO-214AA), molded plastic case with matte tin-plated leads; polarity-unmarked for bidirectional operation; compliant with J-STD-002 and JESD 22-B102 solderability standards.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode / Anode (Bidirectional) | Common terminal pair | No polarity marking; terminals are functionally identical - either can serve as input or return path in AC-coupled or floating systems. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping symmetry | Identical VBR and VC in both directions - eliminates need for orientation-aware PCB layout in AC line or differential bus protection. |
| 600 W peak pulse power (10/1000 µs) | Validated surge handling for Level 4 IEC 61000-4-5 (4 kV line-to-ground) - suitable for primary-side telecom and industrial power rail protection. |
| MSL Level 1 (260 °C peak reflow) | Zero bake requirement before SMT assembly - reduces manufacturing complexity and avoids moisture-related popcorning failures. |
| Halogen-free & RoHS-compliant (M3 suffix) | Fulfills EU Directive 2011/65/EU and JEDEC J-STD-20E environmental requirements without compromising surge performance. |
| Low RθJL = 20 °C/W | Enables efficient heat transfer to PCB copper pads - supports sustained operation under repetitive surge conditions without thermal runaway. |
Applications
| Industrial Motor Drives | Telecom Power Supplies |
|---|---|
|
Use Scenario: Protection of DC bus inputs against inductive kickback from relay coils and contactor switching in PLC I/O modules. IC Role / Device Role / Timing Role: Voltage-clamping TVS placed across +VDC and GND rails upstream of DC-DC converters and gate drivers. Use Value: Limits transient excursions to ≤243 V, preventing latch-up or overvoltage damage to 300 V-rated MOSFETs and isolated feedback optocouplers. |
Use Scenario: Surge suppression on -48 V DC distribution lines feeding base station RF amplifiers and backhaul interfaces. IC Role / Device Role / Timing Role: Bidirectional shunt protector mounted at board edge, parallel to input bulk capacitor. Use Value: Clamps 10/1000 µs surges up to 2.5 A while maintaining <1 µA leakage at nominal -48 V, preserving system efficiency and noise floor. |
| Automotive Body Control Modules | Industrial Sensor Signal Conditioning |
|
Use Scenario: Input protection for LIN bus transceivers and load driver ICs exposed to battery dump energy and load-dump transients. IC Role / Device Role / Timing Role: Secondary-level TVS on 12 V supply rail, downstream of primary fuse and upstream of LDO regulators. Use Value: Withstands 12 V system load-dump pulses (ISO 7637-2 Pulse 5a) without degradation, thanks to 150 °C TJ max and AEC-Q101-compatible construction. |
Use Scenario: ESD and cable discharge protection on analog outputs (e.g., 4–20 mA loops) connected to field-mounted pressure or temperature sensors. IC Role / Device Role / Timing Role: Low-capacitance bidirectional clamp between signal line and shield/ground, minimizing signal distortion. Use Value: Delivers <1 ns response and 1.0 µA leakage at 150 V, ensuring millivolt-level measurement accuracy remains unaffected during normal operation. |
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-E3/5B | RoHS-compliant but not halogen-free; same electrical specs and SMB package. | Preferred for commercial-grade non-automotive designs where halogen content is unrestricted. | Select when cost sensitivity outweighs halogen-free requirement and AEC-Q101 qualification is unnecessary. |
| SAC150CA | Same VWM and VC, but in SMC (DO-214AB) package - larger footprint (7.11 mm × 6.22 mm) and higher RθJA (60 °C/W). | Better suited for higher-power, lower-density layouts requiring >600 W derated pulse handling. | Choose only if PCB space allows larger SMC footprint and thermal design accommodates reduced thermal efficiency. |
Compared with SMBJ150CA-M3/5B, the E3/5B variant trades halogen-free status for marginally lower unit cost, while SAC150CA offers higher surge margin at the expense of board area and thermal performance - making SMBJ150CA-M3/5B optimal for space-constrained, environmentally regulated industrial and telecom designs.
Availability
SMBJ150CA-M3/5B is available at Aetrix Electronics and suitable for industrial motor drives, telecom power supplies, and automotive body control modules requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for SMBJ150CA-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 SMBJ series was engineered for high-reliability transient suppression in harsh environments - targeting industrial automation, telecom infrastructure, and automotive subsystems where failure tolerance and long-term stability are critical.
FAQ
What is the clamping voltage of SMBJ150CA-M3/5B at its rated peak pulse current?
The SMBJ150CA-M3/5B has a maximum clamping voltage (VC) of 243 V when subjected to its specified peak pulse current of 2.5 A under the 10/1000 µs waveform condition. This value is measured per ANSI/IEEE C62.35 standards and defines the upper voltage limit imposed on protected circuitry during surge events - a critical parameter for ensuring downstream ICs remain within their absolute maximum ratings. The SMBJ150CA-M3/5B maintains this clamping performance across its full operating temperature range.
Is SMBJ150CA-M3/5B suitable for automotive applications?
The SMBJ150CA-M3/5B itself is not AEC-Q101 qualified; it carries the M3 commercial-grade suffix. However, Vishay offers the functionally identical SMBJ150CA-HM3_B/I variant with AEC-Q101 qualification for automotive use. For non-safety-critical automotive body electronics where qualification is not mandated, SMBJ150CA-M3/5B may be used subject to internal validation - but SMBJ150CA-M3/5B must not be deployed in airbag, braking, or ADAS systems without formal qualification evidence.
How does the bidirectional nature of SMBJ150CA-M3/5B affect PCB layout?
The SMBJ150CA-M3/5B has no polarity marking and identical electrical behavior in both directions, so PCB layout requires no orientation alignment - either terminal may connect to line or return. This simplifies routing in AC-coupled interfaces like RS-485, CAN bus stubs, or transformer-isolated power inputs. Unlike unidirectional TVS diodes, SMBJ150CA-M3/5B eliminates risk of misplacement during automated assembly and avoids asymmetrical clamping that could compromise common-mode transient rejection.
What is the thermal resistance from junction to lead (RθJL) for SMBJ150CA-M3/5B?
The SMBJ150CA-M3/5B has a typical junction-to-lead thermal resistance (RθJL) of 20 °C/W, as specified in Vishay's datasheet Document Number 88392. This low value enables efficient heat conduction from the silicon die directly into the PCB copper via the device's leads - especially important during repetitive surge events. When mounted on minimum recommended 5.0 mm × 5.0 mm copper pads per terminal, SMBJ150CA-M3/5B achieves reliable thermal performance without external heatsinking in most industrial applications.
Does SMBJ150CA-M3/5B meet UL recognition requirements?
Yes, SMBJ150CA-M3/5B is Underwriters Laboratories (UL) recognized under file number E136766 for both unidirectional and bidirectional configurations, complying with UL 497B for signal and power circuit protectors. This recognition confirms its suitability for use in end equipment requiring third-party safety certification - including industrial control panels, telecom power systems, and building automation hardware - provided installation follows UL-defined spacing and mounting guidelines.
SMBJ150CA-M3/5B 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-M3/5B FAQ
1.How can I place an order for SMBJ150CA-M3/5B through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ150CA-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 SMBJ150CA-M3/5B reliable?
The price and inventory of SMBJ150CA-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 SMBJ150CA-M3/5B is usually 5 days.
3.What payment methods are accepted for SMBJ150CA-M3/5B?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ150CA-M3/5B transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ150CA-M3/5B?
SMBJ150CA-M3/5B orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ150CA-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 SMBJ150CA-M3/5B?
For technical support, including SMBJ150CA-M3/5B datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ150CA-M3/5B requirements.
6.How does Aetrix verify that SMBJ150CA-M3/5B is sourced from the original manufacturer or authorized distributors?
All SMBJ150CA-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 SMBJ150CA-M3/5B meets industry standards.
7.What is the process for return or replacement of SMBJ150CA-M3/5B?
All SMBJ150CA-M3/5B units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ150CA-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 SMBJ150CA-M3/5B part is unused and in its original packaging.
Return procedure for SMBJ150CA-M3/5B:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBJ150CA-M3/5B Tags
-
ESD9B5.0ST5G
onsemi
-
DESD3V3E1BL-7B
Diodes Incorporated
-
ESD5Z3.3T1G
onsemi
-
D5V0H1B2LP-7B
Diodes Incorporated
-
D5V0P1B2LP-7B
Diodes Incorporated
-
DESD5V0U1BA-7
Diodes Incorporated
-
ESD5Z5.0T1G
onsemi
-
DESD5V0U1BB-7
Diodes Incorporated
-
D12V0L1B2LP-7B
Diodes Incorporated
-
PESD2V0Y1BSFYL
Nexperia USA Inc.
-
DF2S5M4CT,L3F
Toshiba Semiconductor and Storage
-
D5V0L1B2WS-7
Diodes Incorporated
Tech Hub
Comparator circuit design covering voltage thresholds, input limits, open-collector outputs, LM393 wiring, op-amp differences, hysteresis, timing, window detection and practical fault diagnosis.
Schmitt triggers use separate rising and falling thresholds to stabilize slow or noisy signals. This guide covers hysteresis, 74HC14 and 74HCT14 selection, comparator calculations, RC oscillators and p…
Counterfeit components can hide behind convincing markings and passing basic function tests. This engineering reference covers source traceability, external inspection, X-ray, XRF, electrical testing, …
A practical engineering and sourcing framework covering lifecycle verification, lifetime-buy calculations, replacement qualification, supplier checks and counterfeit-risk controls.
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
