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Diodes Incorporated SMBJ15CA-13-F
- Part No.:
- SMBJ15CA-13-F
- Manufacturer:
- Diodes Incorporated
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ15CA-13-F.pdf
- Description:
- TVS DIODE 15VWM 24.4VC SMB
- Quantity:
- Payment:
- Shipping:
Inventory:124,266
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Product details
Overview
SMBJ15CA-13-F from Diodes Incorporated is a bi-directional 600W transient voltage suppressor (TVS) diode in SMB package, designed for robust overvoltage protection of DC power rails and signal lines. It features a 15.0V reverse standoff voltage (VRWM), 16.7–19.2V breakdown voltage (VBR), 24.4V max clamping voltage (VC) at 24.0A peak pulse current, and operates across –55°C to +150°C. Used in industrial power supplies and automotive body control modules to absorb ESD and lightning-induced surges.
For engineers reviewing the SMBJ15CA-13-F datasheet, SMBJ15CA-13-F pinout, SMBJ15CA-13-F application, or SMBJ15CA-13-F equivalent, key selection criteria include clamping voltage margin relative to protected IC VDD, peak pulse current handling under IEC 61000-4-5 surge waveforms, thermal derating above +25°C, and bi-directional symmetry for AC-coupled or floating bus protection.
Technical Context
This bi-directional TVS employs glass-passivated silicon junctions to achieve fast response (<1 ns) to transients and stable clamping performance across temperature. Its symmetrical avalanche structure enables identical forward and reverse breakdown behavior, eliminating polarity concerns in differential or ungrounded interfaces.
The device complies with IEC 61000-4-2 (±30 kV contact), IEC 61000-4-4 (±4 kV EFT), and IEC 61000-4-5 (4/10 µs waveform) immunity standards. Thermal derating follows a linear 4.8 W/°C slope above +25°C ambient, with steady-state power dissipation rated at 5.0 W at TL = +75°C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Pulse Power | 600 W - Sustains single 10/1000 µs surge without failure; defines maximum energy absorption capability. |
| Reverse Standoff Voltage (VRWM) | 15.0 V - Maximum continuous DC or RMS voltage before significant leakage; sets upper limit for protected circuit operating voltage. |
| Breakdown Voltage (VBR) | 16.7–19.2 V @ 1.0 mA - Confirmed avalanche onset range; ensures reliable triggering before downstream component damage thresholds. |
| Clamping Voltage (VC) | 24.4 V @ 24.0 A - Maximum voltage seen by protected load during 8.3 ms half-sine surge; critical for IC overvoltage margin design. |
| Peak Pulse Current (IPP) | 24.0 A - Peak current supported at VC; directly maps to IEC 61000-4-5 Level 3 (1 kV/2 Ω) surge compliance. |
| Operating Temperature | –55°C to +150°C - Validated junction temperature range; supports under-hood automotive and industrial environments. |
Pinout & Package
Package: SMB (Surface-Mount Small Outline), molded plastic case per UL 94V-0, 3.30–3.94 mm length × 4.06–4.57 mm width × 1.96–2.21 mm height. Matte tin-plated terminals, moisture sensitivity level 1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode / Cathode (Bi-directional) | Transient conduction path | No polarity marking; symmetric terminals enable bidirectional clamping on any two-point connection. |
| Case (Body) | Thermal and mechanical interface | Non-electrical; serves as primary heat sink path to PCB copper; requires adequate thermal pad area per Diodes SMB layout guidelines. |
Key Features
| Feature | Design Value |
|---|---|
| 600W peak pulse power | Enables protection against high-energy surges (e.g., ISO 7637-2 Pulse 5a) without derating or parallel devices. |
| Glass-passivated die construction | Ensures long-term reliability and stable VBR drift <±5% over 1000 hrs at TJ = +125°C. |
| Bi-directional configuration | Eliminates orientation errors during placement and supports AC signal line or floating bus protection without external diode pairing. |
| RoHS-compliant & halogen-free | Meets IPC-1752A material declaration requirements; bromine <900 ppm, chlorine <900 ppm, antimony <1000 ppm. |
Applications
| Industrial PLC I/O Modules | Automotive Body Control Units |
|---|---|
Use Scenario: Protection of 24V digital input channels against induced surges from relay coil flyback or nearby motor switching. IC Role / Device Role: Primary overvoltage clamp placed between field input and optocoupler input stage. Use Value: Limits transient voltage to ≤24.4V, preserving optocoupler CTR and preventing latch-up in upstream logic. |
Use Scenario: Shielding LIN bus transceivers from battery dump energy and load-dump transients in door module networks. IC Role / Device Role: Bi-directional clamping element across LIN data pair (LIN_H/L) referenced to local ground. Use Value: Maintains signal integrity during 12V system load-dump events (ISO 16750-2) by clamping differential spikes within ±24.4V window. |
| AC-DC Adapter Secondary Side | USB-C Power Delivery Ports |
Use Scenario: Safeguarding secondary-side synchronous rectifier MOSFETs and feedback optocouplers from reflected primary-side surges. IC Role / Device Role: Parallel-connected TVS across output capacitor terminals to clamp common-mode transients. Use Value: Prevents VDS overstress on 60V-rated SR FETs by limiting output rail excursions to ≤24.4V during 600W surge events. |
Use Scenario: Protecting CC1/CC2 pins and VCONN lines from ESD and hot-plug transients in USB-C receptacles. IC Role / Device Role: Bi-directional TVS placed between each CC pin and ground, leveraging symmetry for plug orientation independence. Use Value: Passes IEC 61000-4-2 Level 4 (±8 kV contact) without degradation, ensuring PD controller communication integrity. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ15CA from Littelfuse (SP0503BAHT) | Lower clamping voltage (22.0 V @ 24 A), higher capacitance (150 pF @ 0 V), same SMB package. | Better for high-speed data lines where lower VC matters more than capacitance; less suitable for low-capacitance analog sensors. | Select when clamping margin is tighter than 2.4 V above VRWM and signal bandwidth <10 MHz. |
| P6SMB15CA from Vishay (P6SMB15CAHE3_A/H) | Same VRWM and VC specs, but 600W rating tested at 10/1000 µs (not 8.3 ms); slightly higher IR (10 µA vs. 5 µA). | Validated for telecom surge standards (GR-1089); marginally less robust under repetitive 8.3 ms surges in industrial motor drives. | Prefer for telecom infrastructure or where GR-1089 compliance is mandatory; verify thermal cycling endurance if used in high-duty-cycle environments. |
Compared with SMBJ15CA-13-F, SP0503BAHT offers lower clamping at the cost of higher parasitic capacitance-critical for USB or CAN lines-while P6SMB15CAHE3_A/H matches electrical specs but diverges in surge waveform validation and leakage, affecting long-term reliability in thermally stressed industrial deployments.
Availability
SMBJ15CA-13-F is available at Aetrix Electronics and suitable for industrial PLC I/O modules, automotive body control units, and AC-DC adapter secondary-side protection requiring stable component supply and full traceability through J-STD-020 Level 1 moisture handling.
Supply support for SMBJ15CA-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.
This device belongs to Diodes' SMBJ series of surface-mount TVS diodes, engineered specifically for high-reliability transient suppression in automotive, industrial, and consumer power systems where compact size and repeatable clamping performance are essential.
FAQ
What is the maximum clamping voltage of SMBJ15CA-13-F at its rated peak pulse current?
The maximum clamping voltage (VC) is 24.4 V measured at 24.0 A peak pulse current using an 8.3 ms single half-sine waveform. This value is guaranteed across the full operating temperature range (–55°C to +150°C) and defines the upper voltage limit imposed on protected circuits during surge events.
Is SMBJ15CA-13-F suitable for protecting RS-485 communication lines?
Yes-it provides effective common-mode surge protection for RS-485 transceivers when placed between A/B lines and ground. Its 24.4 V clamping voltage is compatible with 3.3 V or 5 V transceivers with ≥30 V absolute maximum ratings, and its bi-directional symmetry avoids polarity issues in differential signaling.
How does the SMB package affect thermal performance in continuous operation?
The SMB package delivers 5.0 W steady-state power dissipation at TL = +75°C, with linear derating of 4.8 W/°C above +25°C. Effective thermal performance requires ≥40 mm² of 2-oz copper connected to both terminals; insufficient copper area causes junction temperature rise beyond rated limits even at moderate DC leakage currents.
Does SMBJ15CA-13-F meet automotive AEC-Q200 stress testing requirements?
No-this part is not AEC-Q200 qualified. While it operates from –55°C to +150°C and meets IEC surge standards, Diodes Incorporated does not list SMBJ15CA-13-F in its AEC-Q200 qualified portfolio. For automotive safety-critical applications, use the AEC-Q200 qualified SMAJ15CA or SMCJ15CA series instead.
SMBJ15CA-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):
- 15V
- Voltage - Breakdown (Min):
- 16.7V
- Voltage - Clamping (Max) @ Ipp:
- 24.4V
- Current - Peak Pulse (10/1000µs):
- 24A
- 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
SMBJ15CA-13-F FAQ
1.How can I place an order for SMBJ15CA-13-F through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ15CA-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 SMBJ15CA-13-F reliable?
The price and inventory of SMBJ15CA-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 SMBJ15CA-13-F is usually 5 days.
3.What payment methods are accepted for SMBJ15CA-13-F?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ15CA-13-F transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ15CA-13-F?
SMBJ15CA-13-F orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ15CA-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 SMBJ15CA-13-F?
For technical support, including SMBJ15CA-13-F datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ15CA-13-F requirements.
6.How does Aetrix verify that SMBJ15CA-13-F is sourced from the original manufacturer or authorized distributors?
All SMBJ15CA-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 SMBJ15CA-13-F meets industry standards.
7.What is the process for return or replacement of SMBJ15CA-13-F?
All SMBJ15CA-13-F units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ15CA-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 SMBJ15CA-13-F part is unused and in its original packaging.
Return procedure for SMBJ15CA-13-F:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBJ15CA-13-F Tags
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