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Vishay General Semiconductor - Diodes Division SMAJ150C-E3/61
- Part No.:
- SMAJ150C-E3/61
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
SMAJ150C-E3/61.pdf
- Description:
- TVS DIODE 150VWM 268VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:9,697
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Product details
Overview
SMAJ150C-E3/61 from Vishay General Semiconductor is a bi-directional surface-mount Transient Voltage Suppressor (TVS) in DO-214AC (SMA) package, designed for clamping voltage transients on signal or power lines. It features 150 V stand-off voltage (VWM), 268 V maximum clamping voltage (VC) at 1.1 A peak pulse current, and 400 W peak pulse power rating with 10/1000 µs waveform - suitable for protecting MOSFETs, sensor interfaces, and industrial I/O lines against ESD and lightning-induced surges.
For engineers reviewing the SMAJ150C-E3/61 datasheet, SMAJ150C-E3/61 pinout, SMAJ150C-E3/61 application, or SMAJ150C-E3/61 equivalent, key selection criteria include bi-directional clamping capability, low leakage (<1 µA at 150 V), MSL Level 1 moisture sensitivity, RoHS-compliant matte tin terminations, and compatibility with automated SMT placement on standard PCB copper pads.
Technical Context
This bi-directional TVS diode operates symmetrically in both polarities, with breakdown voltage (VBR) specified between 167 V (min) and 204 V (max) at 1 mA test current. Its clamping behavior is defined under standardized 10/1000 µs surge conditions, delivering consistent transient suppression without polarity dependence.
Thermal performance is characterized by RθJA = 120 °C/W and RθJL = 30 °C/W, supporting reliable operation up to +150 °C junction temperature. The device meets J-STD-020 MSL Level 1 and withstands solder reflow at 260 °C for 40 s, ensuring robust manufacturability in high-volume assembly.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 150 V - Maximum continuous reverse operating voltage before clamping begins |
| VC @ IPPM | 268 V at 1.1 A - Clamped voltage during 10/1000 µs surge, limiting downstream stress |
| PPPM | 400 W - Peak pulse power handling per JEDEC standard waveform, derated above 78 V |
| IPPM | 1.1 A - Peak surge current supported at rated clamping voltage |
| ID @ VWM | <1 µA - Reverse leakage ensures minimal standby power loss and signal integrity |
| TJ Range | –55 °C to +150 °C - Full operational range supports industrial and automotive under-hood environments |
Pinout & Package
DO-214AC (SMA) surface-mount package with two terminals; no polarity marking for bi-directional configuration. Mounting requires 0.2 × 0.2 inch (5.0 × 5.0 mm) copper pads per terminal per Vishay recommended layout.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (symmetrical) | Bi-directional transient conduction path | No functional distinction - either terminal serves as input/output for surge current in either direction |
Key Features
| Feature | Design Value |
|---|---|
| Bi-directional clamping | Enables single-device protection of AC-coupled or floating signal lines without polarity concerns |
| 400 W peak pulse power | Handles IEC 61000-4-5 Level 4 surges (4 kV/2 Ω) on properly decoupled lines |
| MSL Level 1 rating | Eliminates bake-out requirement prior to reflow, reducing manufacturing overhead |
| Glass-passivated junction | Ensures stable VBR and low leakage over temperature and lifetime |
| RoHS-compliant matte tin leads | Supports lead-free assembly and meets J-STD-002/JESD22-B102 solderability standards |
Applications
| Industrial Sensor Interfaces | Automotive Body Control Modules |
|---|---|
Use Scenario: Protecting analog voltage outputs of pressure/temperature sensors exposed to load dump or inductive switching noise in factory automation systems. IC Role / Device Role / Timing Role: Bi-directional TVS placed across sensor output and ground to clamp ±200 V transients before they reach ADC input stages. Use Value: Prevents sensor signal corruption and microcontroller reset events caused by sub-100 ns fast-rising transients on 24 V supply rails. |
Use Scenario: Safeguarding LIN bus transceivers and discrete switch drivers in door module ECUs subjected to ISO 7637-2 Pulse 1/2a/5a. IC Role / Device Role / Timing Role: Standoff-rated TVS on LIN data line and switched 12 V power rail to absorb repetitive surges without degradation. Use Value: Maintains communication integrity during battery disconnection events and alternator load dump, meeting AEC-Q101 reliability requirements when used with HE3 variants. |
| Telecom Power Feeds | Consumer USB-C Port Protection |
Use Scenario: Guarding PoE-powered Ethernet PHYs and DC-DC converters against induced surges from nearby AC mains or lightning coupling. IC Role / Device Role / Timing Role: Bi-directional TVS on 48 V DC input rail upstream of primary converter, sized for 10/1000 µs threat profile. Use Value: Limits voltage excursion to <270 V during 100 A surge events, preventing MOSFET avalanche failure and enabling use of lower-VDS switches. |
Use Scenario: Secondary-level surge suppression on VBUS and CC lines of USB-C receptacles in portable monitors and docking stations. IC Role / Device Role / Timing Role: Low-capacitance bi-directional TVS placed after primary ESD array to handle higher-energy transients missed by front-end protection. Use Value: Adds 400 W surge margin beyond IEC 61000-4-2 ESD rating, extending system-level immunity to contact discharge up to ±15 kV. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ150CA-E3/61 | Same electrical specs; CA suffix denotes identical bi-directional construction per Vishay documentation | No functional difference - CA and C suffixes are interchangeable per Document 88390 Table heading and ordering examples | Select SMAJ150CA-E3/61 only if legacy BOM specifies CA; otherwise SMAJ150C-E3/61 is functionally identical |
| SMBJ150C-E3/52 | Same VWM/VC, but SMB package (DO-214AA) offers 600 W PPPM and higher IPPM (1.9 A) | Used where higher surge margin is required and PCB space allows larger footprint | Choose SMBJ150C-E3/52 for enhanced ruggedness in high-energy environments; SMAJ150C-E3/61 preferred for space-constrained layouts |
Compared with SMAJ150CA-E3/61, the SMAJ150C-E3/61 is electrically identical and interchangeable; versus SMBJ150C-E3/52, it trades 50 % lower surge current capacity for 30 % smaller board area and tighter thermal resistance - making it optimal for compact industrial controllers and sensor nodes where layout density is critical.
Availability
SMAJ150C-E3/61 is available at Aetrix Electronics and suitable for industrial sensor interfaces, automotive body control modules, telecom power feeds, and consumer USB-C port protection requiring stable component supply across extended production cycles.
Supply support for SMAJ150C-E3/61 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 passive components with emphasis on reliability, efficiency, and application-specific optimization.
The SMAJ series is engineered for surface-mount transient suppression in harsh environments, targeting design-in across industrial automation, automotive subsystems, and communications infrastructure where robustness and repeatability are mandatory.
FAQ
What is the clamping voltage of SMAJ150C-E3/61 under a 10/1000 µs surge?
The SMAJ150C-E3/61 clamps to a maximum of 268 V when subjected to its rated peak pulse current of 1.1 A using the standardized 10/1000 µs waveform. This value is measured at TA = 25 °C on the recommended 0.2 × 0.2 inch copper pad layout and defines the upper voltage limit imposed on protected circuitry during transient events.
Is SMAJ150C-E3/61 unidirectional or bidirectional?
SMAJ150C-E3/61 is a bi-directional Transient Voltage Suppressor, as confirmed by the "C" suffix in its part number and explicit listing under "DEVICES FOR BI-DIRECTION APPLICATIONS" in Vishay Document 88390. Electrical characteristics apply identically in both polarities, with no cathode band marking on the DO-214AC package.
Does SMAJ150C-E3/61 meet automotive qualification standards?
The base SMAJ150C-E3/61 is commercial-grade and RoHS-compliant but not AEC-Q101 qualified. For automotive applications, Vishay offers the SMAJ150CHE3/61 variant (HE3 suffix), which carries AEC-Q101 qualification and enhanced reliability testing - the "E3" alone indicates commercial grade per Vishay's ordering information table.
What is the maximum reverse leakage current for SMAJ150C-E3/61 at rated standoff voltage?
At its 150 V stand-off voltage (VWM) and TA = 25 °C, the SMAJ150C-E3/61 exhibits a maximum reverse leakage current (ID) of 1 µA. This low leakage preserves signal integrity in high-impedance sensor or communication lines and minimizes quiescent power loss in always-on systems.
What package type does SMAJ150C-E3/61 use, and what are its key mechanical features?
SMAJ150C-E3/61 uses the DO-214AC (SMA) surface-mount package, featuring a low-profile outline, glass-passivated chip junction, matte tin-plated leads compliant with J-STD-002, and UL 94 V-0 molding compound. Its MSL Level 1 rating permits direct placement into reflow ovens without dry-packaging or baking.
SMAJ150C-E3/61 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AC, SMA
- Series:
- TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 150V
- Voltage - Breakdown (Min):
- 167V
- Voltage - Clamping (Max) @ Ipp:
- 268V
- Current - Peak Pulse (10/1000µs):
- 1.1A
- Power - Peak Pulse:
- 300W
- 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-214AC (SMA)
SMAJ150C-E3/61 FAQ
1.How can I place an order for SMAJ150C-E3/61 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMAJ150C-E3/61 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 SMAJ150C-E3/61 reliable?
The price and inventory of SMAJ150C-E3/61 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMAJ150C-E3/61 is usually 5 days.
3.What payment methods are accepted for SMAJ150C-E3/61?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMAJ150C-E3/61 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMAJ150C-E3/61?
SMAJ150C-E3/61 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMAJ150C-E3/61 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 SMAJ150C-E3/61?
For technical support, including SMAJ150C-E3/61 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMAJ150C-E3/61 requirements.
6.How does Aetrix verify that SMAJ150C-E3/61 is sourced from the original manufacturer or authorized distributors?
All SMAJ150C-E3/61 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 SMAJ150C-E3/61 meets industry standards.
7.What is the process for return or replacement of SMAJ150C-E3/61?
All SMAJ150C-E3/61 units undergo pre-shipment inspection (PSI). If there is an issue with SMAJ150C-E3/61, 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 SMAJ150C-E3/61 part is unused and in its original packaging.
Return procedure for SMAJ150C-E3/61:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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