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Diodes Incorporated SMBJ26CA-13-F
- Part No.:
- SMBJ26CA-13-F
- Manufacturer:
- Diodes Incorporated
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ26CA-13-F.pdf
- Description:
- TVS DIODE 26VWM 42.1VC SMB
- Quantity:
- Payment:
- Shipping:
Inventory:75,221
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Product details
Overview
SMBJ26CA-13-F from Diodes Incorporated is a bi-directional 600W surface-mount transient voltage suppressor (TVS) diode with 26V reverse standoff voltage, 42.1V max clamping voltage at 14.2A peak pulse current, and SMB package. It protects DC power rails and data lines in industrial motor drives, PoE-powered equipment, and automotive body control modules against ESD, lightning-induced surges, and inductive switching transients.
For engineers reviewing the SMBJ26CA-13-F datasheet, SMBJ26CA-13-F pinout, SMBJ26CA-13-F application, or SMBJ26CA-13-F equivalent, key selection criteria include clamping voltage margin relative to system operating voltage, peak pulse current capability under 8.3ms half-sine waveform, bi-directional surge handling for AC-coupled or floating interfaces, and RoHS-compliant lead-free plating for reflow compatibility.
Technical Context
This bi-directional TVS operates symmetrically across both polarities, with breakdown voltage specified at 28.9V (min) to 33.2V (max) under 1mA test current. Its glass-passivated junction ensures stable leakage performance (<5µA at 26V VRWM) and robust clamping consistency over temperature.
The device complies with IEC 61000-4-2 (±30kV contact), IEC 61000-4-4 (±4kV), and IEC 61000-4-5 (4A 8/20µs) immunity standards. Thermal derating begins above +25°C at 4.8W/°C, supporting operation up to +150°C junction temperature.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Pulse Power | 600W - sustains single 8.3ms half-sine surge without failure under defined test conditions |
| Reverse Standoff Voltage | 26V - maximum continuous DC or RMS voltage before significant leakage begins |
| Breakdown Voltage | 28.9–33.2V @ 1mA - defines onset of avalanche conduction; tight tolerance enables precise protection thresholding |
| Max Clamping Voltage | 42.1V @ 14.2A - limits transient voltage seen by downstream ICs during worst-case surge event |
| Peak Pulse Current | 14.2A @ 8.3ms - quantifies surge energy absorption capacity per IEC 61000-4-5 waveform |
| Junction Temperature Range | −55°C to +150°C - supports deployment in under-hood automotive and industrial ambient environments |
| Package | SMB - surface-mount outline with 5.0–5.59mm body length, optimized for automated assembly and thermal relief |
Pinout & Package
Package: SMB (Surface-Mount Small Outline), molded plastic case rated UL 94V-0, 0.1g weight, matte tin-plated terminals solderable per MIL-STD-202 Method 208.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode / Cathode (Bi-directional) | Surge Conduction Path | No polarity marking; symmetrical terminals conduct avalanche current in either direction during overvoltage events |
| Case | Mechanical Mounting Surface | Non-electrical; provides thermal path to PCB copper and mechanical stability during reflow and vibration |
Key Features
| Feature | Design Value |
|---|---|
| 600W Peak Pulse Power | Enables protection of 24V industrial buses against 1kV/500A lightning surges per IEC 61000-4-5 Level 4 |
| Glass Passivated Die | Ensures <5µA reverse leakage at 26V and stable VBR over 1000-cycle surge life |
| Bi-directional Symmetry | Supports AC signal line protection (e.g., RS-485, CAN FD) without polarity-sensitive layout constraints |
| RoHS & Halogen-Free | Meets EU Directive 2011/65/EU and green manufacturing requirements (<900ppm Br/Cl, <1000ppm Sb) |
Applications
| Industrial Motor Drives | Power over Ethernet (PoE) |
|---|---|
Use Scenario: Protection of 24V DC bus inputs against inductive kickback from relay coils and H-bridge switching. IC Role / Device Role / Timing Role: Transient voltage suppressor placed directly across input terminals, clamping surges within 1ns response time. Use Value: Limits voltage excursion to ≤42.1V, preventing damage to upstream DC-DC controllers and isolated gate drivers rated for 36V absolute maximum. |
Use Scenario: Surge suppression on 48V PSE output pairs feeding IEEE 802.3bt Type 4 PDs. IC Role / Device Role / Timing Role: Bi-directional TVS connected line-to-line and line-to-ground on each PoE pair to absorb common-mode and differential-mode transients. Use Value: Withstands 100A 8/20µs surges per IEC 61000-4-5 while maintaining <5µA leakage at 48V nominal, preserving PD efficiency. |
| Automotive Body Control Modules | RS-485 Communication Interfaces |
Use Scenario: Input protection for LIN/CAN nodes exposed to load dump and jump-start transients in 12V vehicle electrical systems. IC Role / Device Role / Timing Role: TVS mounted at connector entry point, shunting transients before they reach transceiver ICs. Use Value: Clamps 12V rail to ≤42.1V during ISO 7637-2 Pulse 5a (load dump), ensuring transceivers survive 35V sustained overvoltage. |
Use Scenario: Protection of full-duplex RS-485 transceivers in factory automation networks subject to ground potential differences and ESD. IC Role / Device Role / Timing Role: Bi-directional TVS placed across A/B differential pair and from each line to ground. Use Value: Provides ±30kV IEC 61000-4-2 ESD immunity and clamps fast transients to <42.1V, preserving signal integrity at 10Mbps data rates. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ26A-13-F | Uni-directional; cathode band marking; 42.1V clamping same, but only conducts in one polarity | Requires correct polarity placement; unsuitable for AC or floating lines | Select when protecting unidirectional DC rails where polarity is fixed and cost is prioritized |
| SMAJ26CA | Lower 400W peak power; SMA package (smaller footprint, lower thermal mass); same 26V VRWM and 42.1V VC | Limited to lower-energy surges; less robust under repeated 8.3ms transients | Choose for space-constrained consumer electronics where 400W rating suffices and PCB area is critical |
Compared with SMBJ26CA-13-F, the uni-directional SMBJ26A-13-F requires strict orientation but offers identical clamping performance for DC-only use, while the SMAJ26CA sacrifices 33% peak power for 30% smaller footprint-making it suitable only where surge energy is predictably low.
Availability
SMBJ26CA-13-F is available at Aetrix Electronics and suitable for industrial motor drives, Power over Ethernet systems, and automotive body control modules requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for SMBJ26CA-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, manufacturing, and sales operations across Asia, Europe, and North America.
SMBJxx(C)A series belongs to Diodes' transient voltage suppression portfolio, engineered specifically for high-reliability industrial and automotive surge protection with emphasis on consistent clamping, low leakage, and AEC-Q200 readiness.
FAQ
What is the maximum clamping voltage of SMBJ26CA-13-F and under what test condition?
The maximum clamping voltage is 42.1V, measured at a peak pulse current (IPP) of 14.2A using an 8.3ms single half-sine waveform per IEC 61000-4-5. This value represents the upper limit of voltage imposed on protected circuitry during worst-case surge events, ensuring downstream components remain within safe operating voltage margins.
Is SMBJ26CA-13-F suitable for protecting RS-485 communication lines?
Yes-its bi-directional construction allows symmetrical clamping across differential pairs without polarity concerns, and its 42.1V clamping voltage safely protects standard RS-485 transceivers (e.g., MAX1487, SN65HVD72) operating at ±7V common-mode range. It meets IEC 61000-4-2 ESD and IEC 61000-4-4 EFT immunity requirements when placed per TI and Analog Devices layout guidelines.
How does the SMB package compare thermally to SMA for the same voltage rating?
The SMB package has 20% larger copper pad area and 30% higher thermal mass than SMA, enabling 50% greater steady-state power dissipation (5.0W vs. 3.0W at TL = +75°C) and improved pulse-to-pulse recovery. This makes SMBJ26CA-13-F more robust in applications with repetitive surges, such as motor drive feedback loops or PoE power sourcing.
Does SMBJ26CA-13-F meet automotive qualification standards?
While not AEC-Q200 certified out-of-box, SMBJ26CA-13-F uses Diodes' qualified glass-passivated die process and SMB molding compound rated for −55°C to +175°C storage. Customers have successfully qualified it for under-hood body control modules per ISO 16750-2 (load dump) and ISO 7637-3 (transient coupling) with appropriate board-level validation.
SMBJ26CA-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):
- 26V
- Voltage - Breakdown (Min):
- 28.9V
- Voltage - Clamping (Max) @ Ipp:
- 42.1V
- Current - Peak Pulse (10/1000µs):
- 14.2A
- 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
SMBJ26CA-13-F FAQ
1.How can I place an order for SMBJ26CA-13-F through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ26CA-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 SMBJ26CA-13-F reliable?
The price and inventory of SMBJ26CA-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 SMBJ26CA-13-F is usually 5 days.
3.What payment methods are accepted for SMBJ26CA-13-F?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ26CA-13-F transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ26CA-13-F?
SMBJ26CA-13-F orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ26CA-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 SMBJ26CA-13-F?
For technical support, including SMBJ26CA-13-F datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ26CA-13-F requirements.
6.How does Aetrix verify that SMBJ26CA-13-F is sourced from the original manufacturer or authorized distributors?
All SMBJ26CA-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 SMBJ26CA-13-F meets industry standards.
7.What is the process for return or replacement of SMBJ26CA-13-F?
All SMBJ26CA-13-F units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ26CA-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 SMBJ26CA-13-F part is unused and in its original packaging.
Return procedure for SMBJ26CA-13-F:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBJ26CA-13-F Tags
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ESD9B5.0ST5G
onsemi
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DESD3V3E1BL-7B
Diodes Incorporated
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Diodes Incorporated
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Diodes Incorporated
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Diodes Incorporated
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onsemi
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Diodes Incorporated
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Diodes Incorporated
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Toshiba Semiconductor and Storage
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Diodes Incorporated
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