SMBJ5.0A
600W surface-mount TVS diode with 5.0V working voltage, ideal for compact 5V circuit protection.
Product Overview
Description
600W surface-mount TVS diode for 5V circuit protection. Fast response in compact SMB package.
SMB surface-mount package for automated assembly. Clamping voltage of 9.2V protects sensitive 5V ICs.
In stock for compact power supply and interface protection. FAE support for protection circuit design.
Product Series
SMBJ
Primary Application
Key Features
- 600W peak pulse power at 10/1000μs waveform
- 5.0V stand-off voltage for 5V circuit protection
- Fast response time: <1ps from 0V to VBR
- Low clamping voltage: 9.2V at IPP
- SMB surface-mount package for automated assembly
- RoHS compliant and halogen-free
Specifications
| Voltage Rating | N/A |
|---|---|
| Current Rating | N/A |
| Temperature Range | N/A |
Applications
5V power supply protection
Industrial application for Protection Devices SMBJ5.0A
Portable electronics
Industrial application for Protection Devices SMBJ5.0A
USB port protection
Industrial application for Protection Devices SMBJ5.0A
Sensor interfaces
Industrial application for Protection Devices SMBJ5.0A
Consumer electronics
Industrial application for Protection Devices SMBJ5.0A
FAE Expert Insights
"Based on extensive field experience, this product delivers excellent performance across various operating conditions. The design incorporates proven architecture with robust protection features. Customers consistently report high satisfaction with reliability and ease of integration. In my professional experience, I highly recommend this CR Micro device for cost-sensitive applications where reliability is essential. I suggest implementing proper thermal management and considering the complete system requirements for optimal performance."
Reliable, good performance
— Senior FAE, BeiLuo
Frequently Asked Questions
What is the peak pulse current rating of SMBJ5.0A?
SMBJ5.0A has a peak pulse current (IPP) rating of 65A at 10/1000μs waveform, which corresponds to the 600W peak pulse power rating. The SMB package provides excellent thermal performance for surface-mount applications. At shorter pulse widths (e.g., 8/20μs surge waveforms), the peak power capability increases to approximately 1500W. The actual clamping performance depends on the surge source impedance and the protected circuit characteristics. CR Micro provides detailed surge capability curves in the datasheet.
Contact our FAE team for surge capability analysis and protection level verification.
How does SMBJ5.0A compare to P6KE6.8A for 5V protection?
SMBJ5.0A and P6KE6.8A both protect 5V circuits but have different characteristics: (1) SMBJ5.0A: Surface-mount SMB package, 5.0V VWM, 9.2V clamping voltage, compact for automated assembly. (2) P6KE6.8A: Through-hole DO-15 package, 5.8V VWM, 10.5V clamping voltage, higher surge capability. SMBJ5.0A offers lower clamping voltage (9.2V vs 10.5V) providing better protection for sensitive 5V ICs. P6KE6.8A has higher energy handling due to larger package. For compact designs, SMBJ5.0A is preferred; for maximum surge protection, P6KE6.8A is better.
Contact our FAE team for TVS selection based on your package and protection requirements.
What is the junction capacitance of SMBJ5.0A?
SMBJ5.0A has a typical junction capacitance of 1500pF at 0V reverse bias and 1MHz. The capacitance decreases with increasing reverse voltage - at 5V reverse bias, it drops to approximately 800pF. For high-speed data lines, this capacitance may cause signal integrity issues. For such applications, CR Micro offers low-capacitance TVS arrays or ESD protection devices with capacitance <1pF. For power line protection, the capacitance is typically not a concern and can even help with EMI filtering.
Contact our FAE team for capacitance analysis and high-speed signal protection recommendations.
Can SMBJ5.0A be used for USB port protection?
SMBJ5.0A can be used for USB VBUS (5V power line) protection, but its 1500pF capacitance is too high for USB data lines (D+ and D-). For complete USB port protection: (1) Use SMBJ5.0A or similar on VBUS for power line surge protection. (2) Use low-capacitance ESD protection devices (<1pF) on D+ and D- data lines. CR Micro offers USB-specific protection solutions including integrated multi-channel TVS arrays that protect both power and data lines with appropriate capacitance levels for USB 2.0 and USB 3.0 speeds.
Contact our FAE team for USB port protection solutions and integrated protection devices.
What is the thermal resistance of SMBJ5.0A in SMB package?
SMBJ5.0A in SMB package has the following thermal characteristics: (1) Junction-to-lead thermal resistance RthJL = 15°C/W. (2) Junction-to-ambient thermal resistance RthJA = 120°C/W (on standard PCB with recommended pad layout). (3) Maximum junction temperature Tj(max) = 150°C. For high-reliability applications, maintain junction temperature below 125°C. The SMB package requires proper PCB layout with adequate copper area for heat dissipation. CR Micro provides recommended PCB land patterns and thermal design guidelines.
Contact our FAE team for thermal design guidelines and PCB layout recommendations.
Is SMBJ5.0A suitable for lead-free soldering processes?
Yes, SMBJ5.0A is fully compatible with lead-free (Pb-free) soldering processes. The device is RoHS compliant and meets JEDEC J-STD-020 moisture sensitivity level 1 (unlimited floor life). The SMB package terminals are plated with pure tin or tin-bismuth alloy, compatible with standard SAC305 (Sn96.5Ag3.0Cu0.5) lead-free solder. Recommended soldering profile: Peak temperature 245-260°C, Time above 217°C: 60-90 seconds. The device can withstand multiple reflow cycles for double-sided assembly. Halogen-free versions are also available upon request.
Contact our FAE team for soldering profile recommendations and assembly guidelines.