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Vishay General Semiconductor - Diodes Division SMBJ150CA-E3/5B
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- Part No.:
- SMBJ150CA-E3/5B
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ150CA-E3/5B.pdf
- Description:
- TVS DIODE 150VWM 243VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:7,470
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Product details
Overview
SMBJ150CA-E3/5B from Vishay General Semiconductor is a bidirectional surface-mount Transient Voltage Suppressor (TVS) diode in the SMB (DO-214AA) package, designed to protect sensitive electronics against voltage transients induced by inductive load switching and lightning surges. It features a 150 V standoff 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 operates across –55 °C to +150 °C junction temperature range.
For engineers reviewing the SMBJ150CA-E3/5B datasheet, SMBJ150CA-E3/5B pinout, SMBJ150CA-E3/5B application, or SMBJ150CA-E3/5B equivalent, this device is selected for robust overvoltage protection on DC power rails, industrial sensor interfaces, and telecom line circuits where bidirectional surge immunity and low clamping ratio are critical.
Technical Context
This bidirectional TVS diode operates symmetrically in both polarities, with identical electrical characteristics in forward and reverse directions. Its glass-passivated junction ensures stable breakdown behavior and low leakage (<1.0 µA at VWM), while its low incremental surge resistance enables effective voltage clamping during fast transients.
The device complies with ANSI/IEEE C62.35 standards for transient suppressors and meets MSL Level 1 per J-STD-020 with 260 °C lead-free reflow compatibility. It is RoHS-compliant (E3 suffix), halogen-free option available, and supports automated SMT placement due to its low-profile SMB package.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 150 V - Maximum continuous reverse operating voltage before clamping begins; defines safe DC rail margin for 150 V nominal systems. |
| VBR (min/max) | 167 V / 185 V at 1 mA - Confirmed breakdown threshold range; ensures reliable triggering above system operating voltage. |
| VC @ IPPM | 243 V at 2.5 A - Clamped voltage under 10/1000 µs surge; limits downstream component stress to ≤243 V during worst-case transient. |
| PPPM | 600 W - Peak pulse power handling capability; sustains standardized lightning/surge waveforms without failure. |
| IPPM | 2.5 A - Peak pulse current corresponding to VC; quantifies maximum transient energy absorption per event. |
| TJ max. | +150 °C - Maximum junction temperature; supports operation in high-ambient industrial and automotive under-hood environments. |
| RθJA | 100 °C/W - Junction-to-ambient thermal resistance on standard PCB pads; informs derating requirements for repetitive surge conditions. |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, bidirectional configuration with no polarity marking - terminals are symmetrical anode/cathode pair.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode / Cathode (symmetrical) | Bidirectional transient conduction path | Both terminals function identically; no cathode band marking; enables placement without orientation check in PCB layout. |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power (10/1000 µs) | Handles IEC 61000-4-5 Level 4 surge events on 150 V DC lines without degradation. |
| Low clamping ratio (VC/VBR ≈ 1.45) | Minimizes overvoltage overshoot during clamping, reducing stress on downstream MOSFETs and ICs. |
| MSL Level 1, 260 °C reflow compatible | Supports single-pass lead-free assembly without moisture-related popcorn failure risk. |
| Glass-passivated junction | Ensures long-term stability of VBR and leakage performance across temperature and life cycles. |
| RoHS-compliant, matte tin-plated leads | Meets J-STD-002 solderability and JESD22-B102 whisker resistance Class 2 requirements. |
Applications
| Industrial Motor Drives | Telecom Power Feeds |
|---|---|
|
Use Scenario: Protection of 150 V DC bus inputs in variable-frequency drives exposed to inductive kickback from contactor switching and regenerative braking. IC Role / Device Role / Timing Role: Bidirectional TVS clamp limiting transient excursions to ≤243 V during sub-millisecond surges. Use Value: Prevents gate oxide damage to IGBT modules and overvoltage lockout in isolated DC-DC controllers. |
Use Scenario: Surge suppression on -48 V or +150 V telecom power distribution boards subject to lightning-induced common-mode transients. IC Role / Device Role / Timing Role: Fast-response (sub-nanosecond) voltage limiter placed at board entry point before DC-DC converters. Use Value: Maintains compliance with GR-1089-CORE Level 3 surge immunity without adding series impedance or signal delay. |
| Automotive Body Control Modules | Industrial Sensor Signal Conditioning |
|
Use Scenario: Protection of LIN/CAN power rails and microcontroller supply pins in BCMs subjected to load dump and ISO 7637-2 Pulse 5a. IC Role / Device Role / Timing Role: Standoff-rated TVS absorbing >100 J cumulative surge energy across vehicle lifetime. Use Value: Enables AEC-Q101-qualified variants (HE3 suffix) to meet automotive reliability and qualification requirements. |
Use Scenario: Bidirectional clamping on analog input lines (e.g., 4–20 mA loops, RTD bridges) connected to field-mounted sensors in factory automation. IC Role / Device Role / Timing Role: Low-leakage (<1 µA) protector preserving signal integrity while blocking ±2 kV ESD and surge events. Use Value: Eliminates need for external series resistors or RC filters that degrade measurement accuracy and bandwidth. |
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-M3/5B | Halogen-free, RoHS-compliant variant with identical electrical specs and SMB package. | No functional difference; selected when halogen-free material compliance is required for end-product certification. | Direct drop-in replacement for SMBJ150CA-E3/5B where halogen-free bill-of-materials is mandated. |
| SMCJ150CA-E3/2A | Same VWM/VBR/VC, but in larger SMC (DO-214AB) package with 1500 W PPPM. | Higher surge capacity suits applications with repeated high-energy transients (e.g., outdoor power supplies). | Choose when higher single-event energy handling is needed; requires PCB footprint change and increased board area. |
Compared with SMBJ150CA-E3/5B, the M3/5B offers identical protection performance with halogen-free construction, while the SMCJ150CA-E3/2A trades compact size for 2.5× higher pulse power - enabling longer surge endurance in harsher environments at the cost of layout space.
Availability
SMBJ150CA-E3/5B is available at Aetrix Electronics and suitable for industrial motor drives, telecom power feeds, and automotive body control modules requiring stable component supply, consistent RoHS compliance, and verified surge performance across production lots.
Supply support for SMBJ150CA-E3/5B 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, TVS devices, and optoelectronics with emphasis on reliability, precision, and application-specific optimization.
The SMBJ series was engineered for high-reliability surface-mount transient suppression in space-constrained industrial, telecom, and automotive systems - balancing low profile, robust surge handling, and manufacturability.
FAQ
What is the standoff voltage rating of SMBJ150CA-E3/5B?
The SMBJ150CA-E3/5B has a maximum reverse standoff voltage (VWM) of 150 V, meaning it remains non-conductive up to this DC or RMS voltage level under normal operation. This value is confirmed in the Vishay datasheet Document Number 88392, Table "ELECTRICAL CHARACTERISTICS", row for SMBJ150A, and applies directly to SMBJ150CA-E3/5B as a bidirectional variant of the same family.
Is SMBJ150CA-E3/5B unidirectional or bidirectional?
SMBJ150CA-E3/5B is a bidirectional TVS diode, indicated by the "CA" suffix per Vishay's naming convention. Its electrical characteristics - including VBR, VC, and IPPM - apply identically in both polarities, and it carries no cathode band marking. This symmetry makes SMBJ150CA-E3/5B ideal for AC-coupled lines or DC rails where polarity reversal or differential surges may occur.
What package does SMBJ150CA-E3/5B use, and what are its key mechanical features?
SMBJ150CA-E3/5B uses the SMB (DO-214AA) surface-mount package, measuring 4.57 mm × 3.94 mm × 2.20 mm (L × W × H). Key mechanical features include matte tin-plated leads compliant with J-STD-002, UL 94 V-0 molding compound, MSL Level 1 rating, and suitability for automated pick-and-place. The package footprint matches industry-standard SMB land patterns.
Does SMBJ150CA-E3/5B meet automotive qualification standards?
The base SMBJ150CA-E3/5B is commercial-grade and RoHS-compliant but not AEC-Q101 qualified. However, Vishay offers the automotive variant SMBJ150CAHE3_B/I (with HE3 suffix), which is AEC-Q101 qualified and shares identical electrical parameters. For automotive designs requiring qualification, SMBJ150CAHE3_B/I - not SMBJ150CA-E3/5B - must be specified and sourced.
What is the clamping voltage of SMBJ150CA-E3/5B under surge conditions?
The SMBJ150CA-E3/5B clamps to a maximum of 243 V when subjected to its rated peak pulse current of 2.5 A (10/1000 µs waveform), as specified in the "ELECTRICAL CHARACTERISTICS" table of Vishay document 88392. This clamping voltage defines the upper voltage limit imposed on protected circuitry during transient events and is measured across the device terminals under standardized test conditions.
SMBJ150CA-E3/5B 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-E3/5B FAQ
1.How can I place an order for SMBJ150CA-E3/5B through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ150CA-E3/5B 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-E3/5B reliable?
The price and inventory of SMBJ150CA-E3/5B are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBJ150CA-E3/5B is usually 5 days.
3.What payment methods are accepted for SMBJ150CA-E3/5B?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ150CA-E3/5B transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ150CA-E3/5B?
SMBJ150CA-E3/5B orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ150CA-E3/5B 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-E3/5B?
For technical support, including SMBJ150CA-E3/5B datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ150CA-E3/5B requirements.
6.How does Aetrix verify that SMBJ150CA-E3/5B is sourced from the original manufacturer or authorized distributors?
All SMBJ150CA-E3/5B 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-E3/5B meets industry standards.
7.What is the process for return or replacement of SMBJ150CA-E3/5B?
All SMBJ150CA-E3/5B units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ150CA-E3/5B, 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-E3/5B part is unused and in its original packaging.
Return procedure for SMBJ150CA-E3/5B:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBJ150CA-E3/5B Tags
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