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Diodes Incorporated SMBJ150CA-13-F
- Part No.:
- SMBJ150CA-13-F
- Manufacturer:
- Diodes Incorporated
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ150CA-13-F.pdf
- Description:
- TVS DIODE 150VWM 243VC SMB
- Quantity:
- Payment:
- Shipping:
Inventory:6,132
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Product details
Overview
SMBJ150CA-13-F from Diodes Incorporated is a bi-directional transient voltage suppressor (TVS) diode in SMB package, designed for overvoltage protection of sensitive electronics. It features 150V reverse standoff voltage (VRWM), 243V maximum clamping voltage (VC) at 2.5A peak pulse current (IPP), and 600W peak pulse power dissipation. Used in DC power input lines of industrial controllers to absorb lightning-induced surges.
For engineers reviewing the SMBJ150CA-13-F datasheet, SMBJ150CA-13-F pinout, SMBJ150CA-13-F application, or SMBJ150CA-13-F equivalent, key selection criteria include clamping voltage margin relative to system rail, bidirectional surge handling for AC-coupled or floating interfaces, thermal derating above +25°C, and RoHS-compliant lead-free plating compatibility with reflow profiles.
Technical Context
This TVS operates as a voltage-clamped shunt protector: under normal bias it presents <5μA leakage at VRWM = 150V; during transients exceeding VBR = 167–192.5V (measured at IT = 1mA), it avalanches to limit voltage across protected circuitry. Its glass-passivated die ensures stable breakdown characteristics and low capacitance (<10pF at 1MHz).
The device uses a unidirectional/bidirectional junction structure defined by the "C" suffix - SMBJ150CA is symmetrical, enabling protection on AC signals or differential buses without polarity constraints. Thermal performance is governed by PM(AV) = 5.0W at TL = +75°C and pulse derating of 4.8W/°C above +25°C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Pulse Power | 600W - sustains single 10/1000μs surge without failure |
| Reverse Standoff Voltage | 150V - maximum continuous working voltage before conduction begins |
| Breakdown Voltage | 167–192.5V @ 1mA - defines onset of avalanche clamping |
| Clamping Voltage | 243V @ 2.5A IPP - upper voltage limit imposed on protected line during surge |
| Leakage Current | ≤5μA @ 150V - negligible standby power loss and signal loading |
| Package | SMB - surface-mount outline compatible with IPC-7351B standard footprints |
| Operating Temp | −55°C to +150°C - supports deployment in automotive engine bays and industrial enclosures |
Pinout & Package
Two-terminal SMB package with no polarity marking for bi-directional operation; terminals are anode and cathode symmetrically arranged for AC surge suppression.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Surge current entry (positive half-cycle) | Conducts during positive transients; tied to protected line |
| Cathode | Surge current entry (negative half-cycle) | Conducts during negative transients; tied to same protected line |
Key Features
| Feature | Design Value |
|---|---|
| 600W Peak Pulse Power | Enables robust protection against IEC 61000-4-5 Level 4 surges (4kV/2Ω) on 24V–48V systems |
| Glass Passivated Die | Ensures stable VBR over temperature and lifetime, minimizing parameter drift in harsh environments |
| Bi-Directional Symmetry | Eliminates need for polarity-aware layout; supports differential data lines like RS-485 or CAN bus stubs |
| RoHS & Halogen-Free | Meets IPC-1752A material declaration requirements and EU environmental compliance mandates |
| SMB Package Footprint | Reduces PCB area vs. SMA/SMBJ alternatives while maintaining thermal reliability via copper pad thermal relief |
Applications
| Industrial PLC I/O Protection | DC Power Input Surge Suppression |
|---|---|
Use Scenario: 24V DC inputs on programmable logic controller modules exposed to field wiring surges. IC Role / Device Role / Timing Role: Shunt TVS diode clamping transient energy before it reaches downstream regulator and microcontroller. Use Value: Limits voltage to ≤243V during 2.5A surge, preserving 28V-rated input capacitors and LDOs. | Use Scenario: 48V telecom power supply front-end subjected to ISO 7637-2 pulse 1 and pulse 2b. IC Role / Device Role / Timing Role: Fast-response voltage clamp placed directly at connector entry point. Use Value: Responds within nanoseconds to suppress spikes up to 600W, preventing latch-up in PMICs. |
| RS-485 Transceiver ESD Protection | Automotive Body Control Module Inputs |
Use Scenario: Differential data lines in factory automation networks operating at 125 kbps over 1200 m. IC Role / Device Role / Timing Role: Bi-directional TVS placed across A/B lines to absorb common-mode surges and ESD events. Use Value: Low capacitance (<10pF) avoids signal integrity degradation at high data rates. | Use Scenario: 12V sensor inputs in body control units exposed to load dump per ISO 16750-2. IC Role / Device Role / Timing Role: Primary clamping device on LIN or analog sensor rails prior to ADC input. Use Value: Withstands 150V standoff and clamps to 243V, protecting 5V rail regulators from overvoltage damage. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ150A-13-F | Unidirectional; requires correct polarity placement; VF ≈ 3.5V forward drop | Only suitable where DC bias polarity is fixed and known | Select only when protecting unidirectional DC rails with defined ground reference |
| SAC150CA | Same VRWM and VC, but SOD-123FL package; lower thermal mass and 400W rating | Limited to lower-energy transients due to reduced PPK and PM(AV) | Choose for space-constrained designs where 600W rating is not required |
Compared with SMBJ150CA-13-F, the unidirectional SMBJ150A-13-F offers identical clamping but demands strict polarity awareness, while SAC150CA trades surge capacity for smaller footprint - making the original optimal for high-reliability industrial surge zones requiring full 600W headroom.
Availability
SMBJ150CA-13-F is available at Aetrix Electronics and suitable for industrial PLC I/O protection, DC power input surge suppression, and RS-485 transceiver ESD protection requiring stable component supply and long-term obsolescence management.
Supply support for SMBJ150CA-13-F 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
Diodes Incorporated is a global manufacturer of discrete semiconductors and analog ICs, headquartered in Plano, Texas, with design centers across Asia and manufacturing in China, Taiwan, and the U.S.
The SMBJ series belongs to Diodes' transient voltage suppression portfolio, engineered specifically for high-power, fast-response overvoltage protection in industrial, automotive, and communications infrastructure applications.
FAQ
What does the "C" in SMBJ150CA-13-F signify?
The "C" suffix denotes bi-directional configuration: both terminals behave identically under positive and negative transients, eliminating polarity concerns during PCB layout. This differs from unidirectional variants (e.g., SMBJ150A-13-F), which require correct anode/cathode orientation relative to system ground.
Can SMBJ150CA-13-F be used in automotive load dump protection?
Yes - its 150V VRWM and 243V VC align with ISO 16750-2 Category C (load dump test: 12V system, 60V max, 400ms duration). However, for full 12V load dump compliance, pairing with a higher-power TVS or using in parallel with a varistor may be necessary depending on energy level and clamping margin requirements.
What is the thermal resistance junction-to-lead (RθJL) for this device?
RθJL is not explicitly specified in DS19002 Rev. 20-2, but steady-state power dissipation is rated at 5.0W at TL = +75°C. Derating follows 4.8W/°C above +25°C, implying RθJL ≈ 20.8°C/W based on PM(AV) = (TJmax − TL)/RθJL with TJmax = +150°C.
Is SMBJ150CA-13-F compatible with lead-free reflow soldering?
Yes - it features matte tin lead-free plating, qualified per J-STD-020 moisture sensitivity Level 1, and is fully compatible with standard Pb-free reflow profiles (peak temperature ≤260°C, time above liquidus ≤60 seconds), as confirmed in Diodes' packaging documentation.
SMBJ150CA-13-F Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Package/Case:
- DO-214AA, SMB
- Series:
- SMBJ
- 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:
- SMB
SMBJ150CA-13-F FAQ
1.How can I place an order for SMBJ150CA-13-F through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ150CA-13-F 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-13-F reliable?
The price and inventory of SMBJ150CA-13-F are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBJ150CA-13-F is usually 5 days.
3.What payment methods are accepted for SMBJ150CA-13-F?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ150CA-13-F transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ150CA-13-F?
SMBJ150CA-13-F orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ150CA-13-F 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-13-F?
For technical support, including SMBJ150CA-13-F datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ150CA-13-F requirements.
6.How does Aetrix verify that SMBJ150CA-13-F is sourced from the original manufacturer or authorized distributors?
All SMBJ150CA-13-F 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-13-F meets industry standards.
7.What is the process for return or replacement of SMBJ150CA-13-F?
All SMBJ150CA-13-F units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ150CA-13-F, 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-13-F part is unused and in its original packaging.
Return procedure for SMBJ150CA-13-F:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBJ150CA-13-F Tags
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