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SMBJ30CD-M3/H
Vishay General Semiconductor - Diodes Division
TVS DIODE 30VWM 47.7VC DO214AA
1251 Pcs New Original In Stock
47.7V Clamp 12.6A Ipp Tvs Diode Surface Mount DO-214AA (SMBJ)
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5.0 / 5.0
- (232 Ratings)
SMBJ30CD-M3/H
Product Overview
1007976
DiGi Electronics Part Number
SMBJ30CD-M3/H-DGManufacturer
Vishay General Semiconductor - Diodes Division
SMBJ30CD-M3/H
Description
TVS DIODE 30VWM 47.7VC DO214AAInventory
1251 Pcs New Original In Stock
47.7V Clamp 12.6A Ipp Tvs Diode Surface Mount DO-214AA (SMBJ)
CAD Models - PCB Symbols & Footprints
Quantity
Minimum 1
Minimum 1
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SMBJ30CD-M3/H Technical Specifications
Category
Transient Voltage Suppressors (TVS), TVS Diodes
Packaging
Tape & Reel (TR)
Series
TransZorb®
Product Status
Active
Type
Zener
Bidirectional Channels
1
Voltage - Reverse Standoff (Typ)
30V
Voltage - Breakdown (Min)
33.8V
Voltage - Clamping (Max) @ Ipp
47.7V
Current - Peak Pulse (10/1000µs)
12.6A
Power - Peak Pulse
600W
Power Line Protection
No
Applications
General Purpose
Capacitance @ Frequency
-
Operating Temperature
-55°C ~ 150°C (TJ)
Mounting Type
Surface Mount
Package / Case
DO-214AA, SMB
Supplier Device Package
DO-214AA (SMBJ)
Base Product Number
SMBJ30
Datasheet & Documents
HTML Datasheet
SMBJ30CD-M3/H-DG
Environmental & Export Classification
RoHS Status
ROHS3 Compliant
Moisture Sensitivity Level (MSL)
1 (Unlimited)
REACH Status
REACH Unaffected
ECCN
EAR99
HTSUS
8541.10.0080
Additional Information
Other Names
SMBJ30CD-M3/H-DG
SMBJ30CD-M3/HTR-DG
SMBJ30CD-M3/HGICT
SMBJ30CD-M3/HGIDKR
SMBJ30CD-M3/HGITR
Standard Package
750
Alternative Parts
PART NUMBER
MANUFACTURER
QUANTITY AVAILABLE
DiGi PART NUMBER
UNIT PRICE
SUBSTITUTE TYPE
Reviews
5.0/5.0-(Show up to 5 Ratings)
de desembre 02, 2025
웹사이트를 통해 쉽게 원하는 서비스를 찾을 수 있었습니다.
de desembre 02, 2025
구매 후 지원이 체계적이고 신속해서, 제품에 대한 신뢰도가 높아졌어요.
de desembre 02, 2025
배송 속도가 매우 빠르고 포장도 꼼꼼해서 배송 과정이 훌륭했어요.
de desembre 02, 2025
產品品質一直保持高水平，值得信賴的電商平台。
de desembre 02, 2025
Shopping on this site feels seamless thanks to the user-friendly interface and clear categories.
de desembre 02, 2025
Fast shipping and a user-friendly interface make this store my top choice.
de desembre 02, 2025
DiGi Electronics never misses their delivery deadlines, which is highly commendable.
de desembre 02, 2025
The support staff at DiGi Electronics goes above and beyond to troubleshoot issues, demonstrating true commitment to customer satisfaction.
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Frequently Asked Questions (FAQ)
When designing in the SMBJ30CD-M3/H for a 24V industrial control circuit, what are the key risks of overvoltage clamping in high-temperature environments near 125°C?
When using the SMBJ30CD-M3/H in a 24V system, the primary risk at elevated temperatures (up to 125°C or higher ambient) is derating of the peak pulse current handling due to thermal buildup. While the device is rated for 600W peak pulse power and a maximum clamping voltage of 47.7V at 12.6A, prolonged exposure to repetitive transients near maximum ratings can exceed junction temperature limits (TJ max 150°C). To mitigate this, ensure adequate PCB copper pour for thermal dissipation (per DO-214AA SMB footprint recommendations), derate Ipp by at least 20% above 100°C ambient, and avoid chaining multiple high-energy surges without cooldown. Also verify that downstream components (e.g., microcontrollers or power regulators) can tolerate brief exposure to 47.7V during clamping events, especially under temperature-induced parameter drift.
How does the SMBJ30CD-M3/H compare to the SMAJ30CA-M3/H in terms of surge robustness and PCB footprint compatibility for drop-in replacement?
The SMBJ30CD-M3/H and SMAJ30CA-M3/H both provide 30V reverse standoff and are bidirectional TVS diodes in similar 600W peak pulse packages, but they differ in footprint and surge performance. The SMBJ30CD-M3/H uses the DO-214AA (SMB) case, offering higher current capability (12.6A Ipp) and better thermal performance than the SMAJ30CA-M3/H in the smaller DO-214AC (SMA). While they share the same electrical specs approximately, they are not footprint-compatible—SMB is larger than SMA, so a direct drop-in replacement isn’t feasible without board redesign. Using the SMBJ30CD-M3/H in place of SMAJ30CA-M3/H improves surge resilience and thermal margin, but the layout must be updated to accommodate the DO-214AA footprint.
What design considerations are critical when replacing an aging P6SMB30CA with the SMBJ30CD-M3/H in a legacy power supply?
When replacing the P6SMB30CA with the SMBJ30CD-M3/H, confirm voltage compatibility: both have a 30V reverse standoff and similar clamping levels (~47.7V), making them functionally equivalent in typical overvoltage protection roles. However, ensure that the PCB layout supports the DO-214AA (SMB) package of the SMBJ30CD-M3/H, as some legacy designs may have been built for tighter pitch or different thermal pads. Additionally, verify that the transient events in the application remain within 10/1000µs waveform limits and that the updated batch’s tighter tolerance (e.g., breakdown min 33.8V) won’t inadvertently trigger during normal operating transients near 30–33V. Finally, confirm RoHS compliance alignment with your BOM requirements.
Can the SMBJ30CD-M3/H be used effectively for ESD protection in IEC 61000-4-2 level 4 applications, or is it better suited for bulk surge suppression?
The SMBJ30CD-M3/H is optimized for bulk transient surge suppression (e.g., lightning-induced or inductive load switching) rather than ESD-focused protection. While it can clamp fast ESD events (such as IEC 61000-4-2 level 4 ±8kV contact discharge), its 10/1000µs waveform rating and higher clamping voltage (47.7V max) make it less ideal for sensitive low-voltage data lines or ICs that fail below 50V. For ESD protection on signal lines, lower-capacitance, lower-clamping TVS diodes (e.g., specialized 1.5KE or polymer-based arrays) are preferred. Use the SMBJ30CD-M3/H in power rail protection where 600W pulse handling and robust clamping at 47.7V are acceptable for the downstream load, such as motor drives or industrial sensors.
What are the reliability risks of using the SMBJ30CD-M3/H in a high-humidity outdoor environment even with conformal coating?
Although the SMBJ30CD-M3/H is RoHS3 compliant and rated for -55°C to 150°C with MSL 1 (unlimited floor life), prolonged exposure to high humidity in outdoor environments can lead to leakage current increase or electrochemical migration under bias—even with conformal coating. Key risks include coating micro-cracking or incomplete coverage around solder joints leading to moisture ingress. To ensure long-term reliability, use hydrophobic conformal coatings (e.g., silicone or parylene), minimize board edge exposure, and include guard rings in PCB layout to reduce tracking risk. Also avoid sustained operation near max clamp voltage in humid conditions, as partial discharges or leakage through contamination may accelerate degradation. Consider periodic HALT testing if deployed in harsh environments.
Quality Assurance (QC)
DiGi ensures the quality and authenticity of every electronic component through professional inspections and batch sampling, guaranteeing reliable sourcing, stable performance, and compliance with technical specifications, helping customers reduce supply chain risks and confidently use components in production.
SMBJ30CD-M3/H CAD Models
Vishay General Semiconductor - Diodes Division SMBJ30CD-M3/H PCB symbols & footprints
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