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US3M
Diotec Semiconductor
ULTRAFAST SMC 1000V 3A 75NS 150C
17223 Pcs New Original In Stock
Diode 1000 V 3A Surface Mount SMC (DO-214AB)
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*Quantity
Minimum 1
Minimum 1
5.0 / 5.0
- (142 Ratings)
US3M
Product Overview
12943703
DiGi Electronics Part Number
US3M-DGManufacturer
Diotec Semiconductor
US3M
Description
ULTRAFAST SMC 1000V 3A 75NS 150CInventory
17223 Pcs New Original In Stock
Diode 1000 V 3A Surface Mount SMC (DO-214AB)
Quantity
Minimum 1
Minimum 1
Purchase and inquiry
Warranty & Returns
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Quality Assurance
365 - Day Quality Guarantee - Every part fully backed.
90 - Day Refund or Exchange - Defective parts? No hassle.
Limited Stock, Order Now - Get reliable parts without worry.
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US3M Technical Specifications
Category
Diodes, Rectifiers, Single Diodes
Packaging
Tape & Reel (TR)
Series
-
Product Status
Active
Technology
Standard
Voltage - DC Reverse (Vr) (Max)
1000 V
Current - Average Rectified (Io)
3A
Voltage - Forward (Vf) (Max) @ If
1.7 V @ 3 A
Speed
Fast Recovery =< 500ns, > 200mA (Io)
Reverse Recovery Time (trr)
75 ns
Current - Reverse Leakage @ Vr
5 µA @ 1000 V
Capacitance @ Vr, F
-
Mounting Type
Surface Mount
Package / Case
DO-214AB, SMC
Supplier Device Package
SMC (DO-214AB)
Operating Temperature - Junction
-50°C ~ 150°C
Datasheet & Documents
Datasheets
Download US3M Product Specification (PDF)
HTML Datasheet
US3M-DG
Environmental & Export Classification
RoHS Status
ROHS3 Compliant
Moisture Sensitivity Level (MSL)
Not Applicable
REACH Status
REACH Unaffected
HTSUS
8541.10.0000
Additional Information
Other Names
4878-US3MTR
4878-US3MCT
4878-US3MDKR
2796-US3MTR
2796-US3MTR-DG
Standard Package
3,000
Reviews
5.0/5.0-(Show up to 5 Ratings)
Dec 02, 2025
Excellent choix pour ceux qui veulent des produits fiables sans se ruiner.
Dec 02, 2025
Ich bin begeistert von der Effizienz und den fairen Preisen bei DiGi Electronics.
Dec 02, 2025
Delivery was faster than expected, and the after-sales support was always prompt and helpful.
Dec 02, 2025
Great balance of user experience and value—DiGi Electronics never disappoints.
Dec 02, 2025
DiGi Electronics helps ensure a positive experience from purchase through after-sales.
Dec 02, 2025
Navigating their website is a breeze, enhancing my overall shopping satisfaction.
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Frequently Asked Questions (FAQ)
What are the key risks when selecting the US3M as a replacement for the MUR3100 in a high-temperature SMPS design?
When replacing the MUR3100 with the US3M in a high-temperature switch-mode power supply, verify that the US3M’s 75ns reverse recovery time meets your switching frequency requirements. While both are 1000V 3A ultrafast diodes, the US3M has comparable trr but may exhibit slightly higher reverse leakage at elevated junction temperatures. Ensure thermal design accounts for the US3M’s 150°C max junction temperature and confirm PCB layout supports adequate heat dissipation, especially in SMC packages with limited copper pour. Always validate under worst-case load and ambient conditions to avoid premature failure.
How does the US3M perform in parallel configurations for increased current handling in PFC circuits?
The US3M can be paralleled in power factor correction (PFC) stages to increase current capacity, but due diligence is required. While its positive temperature coefficient aids current sharing, slight mismatches in forward voltage (up to 1.7V @ 3A) can still cause imbalance. Use matched units from the same batch, ensure symmetric PCB layout with equal trace lengths, and consider adding small ballast resistors if uneven heating is observed. Monitor junction temperature closely, as derating begins above 75°C ambient in high-power applications.
Can the US3M safely replace the STTH3R10 in a 100kHz flyback converter with stringent EMI requirements?
Replacing the STTH3R10 with the US3M in a 100kHz flyback converter is feasible, but EMI performance must be validated. The US3M’s 75ns trr is comparable to STTH3R10’s 70ns, but reverse recovery characteristics can differ in softness, potentially increasing high-frequency noise. Use a snubber network (RC) and check peak reverse recovery current during turn-off. If EMI margins are tight, consider the US3M’s lack of soft-recovery profile versus STTH series. Layout practices like minimizing loop area are critical to mitigate conducted emissions.
What design considerations are critical when using the US3M in a bridge rectifier for industrial AC-DC converters?
When integrating the US3M into a bridge rectifier for industrial environments, ensure all four diodes are thermally balanced to prevent localized overheating. The US3M’s 3A average current rating assumes ideal heat transfer; in reality, shared thermal impedance in compact layouts can lead to derating. Use thick copper traces or thermal vias under the SMC pads. Additionally, verify that the 1000V rating provides sufficient margin over the peak line voltage (e.g., 277VAC → ~390V peak), including surges. Leakage current up to 5µA @ 1000V is acceptable but can affect standby efficiency in ultra-low-power modes.
How does junction temperature cycling affect the long-term reliability of the US3M in outdoor power supplies?
The US3M is rated for -50°C to 150°C junction operation, making it suitable for outdoor use, but thermal cycling durability depends on PCB design. Frequent temperature swings cause expansion/contraction at SMC solder joints, increasing risk of fatigue cracks over time. Mitigate this by using lead-free solder with high fatigue resistance, avoiding rigid copper connections, and minimizing thermal gradients across the board. Conformal coating can protect against moisture ingress, which exacerbates corrosion under temperature stress. Monitor field performance via accelerated life testing if operating near 150°C max limit.
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.
US3M CAD Models
Diotec Semiconductor US3M PCB symbols & footprints
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