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TT8M
Diodes Incorporated
MEDIUM/HIGH POWER BRIDGE TTL T&R
101015 Pcs New Original In Stock
Bridge Rectifier Single Phase Standard 1 kV Surface Mount TT
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Minimum 1
5.0 / 5.0
- (372 Ratings)
TT8M
Product Overview
11088266
DiGi Electronics Part Number
TT8M-DGManufacturer
Diodes Incorporated
TT8M
Description
MEDIUM/HIGH POWER BRIDGE TTL T&RInventory
101015 Pcs New Original In Stock
Bridge Rectifier Single Phase Standard 1 kV Surface Mount TT
Quantity
Minimum 1
Minimum 1
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TT8M Technical Specifications
Category
Diodes, Bridge Rectifiers
Packaging
-
Series
-
Product Status
Active
Diode Type
Single Phase
Technology
Standard
Voltage - Peak Reverse (Max)
1 kV
Current - Average Rectified (Io)
8 A
Voltage - Forward (Vf) (Max) @ If
1 V @ 4 A
Current - Reverse Leakage @ Vr
5 µA @ 1000 V
Operating Temperature
-55°C ~ 150°C (TJ)
Mounting Type
Surface Mount
Package / Case
4-SMD, Gull Wing
Supplier Device Package
TT
Base Product Number
TT8
Datasheet & Documents
Datasheets
Download TT8M Product Specification (PDF)
HTML Datasheet
TT8M-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
31-TT8MCT
31-TT8MTR
31-TT8MDKR
Standard Package
1,500
Alternative Parts
PART NUMBER
MANUFACTURER
QUANTITY AVAILABLE
DiGi PART NUMBER
UNIT PRICE
SUBSTITUTE TYPE
Reviews
5.0/5.0-(Show up to 5 Ratings)
грудня 02, 2025
Une équipe compétente et attentive qui offre des tarifs très attractifs, bravo!
грудня 02, 2025
Durch die zuverlässige Sendungsverfolgung konnte ich meine Lieferung stets im Blick behalten. Sehr zufrieden!
грудня 02, 2025
The logistics team’s efficiency significantly improves my supply chain management.
грудня 02, 2025
The extensive and well-maintained inventory at DiGi Electronics helps us meet tight project deadlines.
грудня 02, 2025
Their customer service is genuinely caring and always supportive post-purchase.
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Frequently Asked Questions (FAQ)
What are the key thermal management considerations when designing a PCB layout for the TT8M bridge rectifier in a high-ambient-temperature environment, and how can I prevent premature failure due to thermal stress?
The TT8M, with its 8 A average rectified current and 1 V forward voltage drop at 4 A, can dissipate up to 8 W under full load, making thermal design critical—especially in environments approaching its 150°C TJ max. Use a large copper pour on both top and bottom layers connected through multiple thermal vias to act as a heatsink. Ensure the PCB’s thermal resistance (θJA) is minimized by avoiding thermal isolation of pads. In high-ambient applications (>85°C), consider adding an external heatsink or forced airflow, as junction temperature can exceed safe limits without proper dissipation, risking thermal runaway and long-term reliability degradation.
Can the TT8M be used as a drop-in replacement for the Vishay VS-8KB10 in a 1 kV, 8 A single-phase rectification application, and what design adjustments might be needed?
While the TT8M and Vishay VS-8KB10 both offer 1 kV PIV and 8 A average current, they are not direct drop-in replacements due to differing package footprints and thermal performance. The TT8M uses a 4-SMD gull-wing TT package, whereas the VS-8KB10 uses a larger, through-hole TO-220-style package with better natural convection cooling. If replacing, verify PCB pad compatibility and assess thermal performance: the TT8M’s lower profile may reduce natural airflow, potentially requiring enhanced copper area or derating at high ambient temperatures. Also, confirm reverse leakage current tolerance, as the TT8M’s 5 µA @ 1 kV is higher than the VS-8KB10’s typical 1 µA, which could affect efficiency in low-power standby modes.
How does the reverse leakage current of the TT8M impact efficiency in low-load or standby conditions, and is it suitable for energy-sensitive applications like solar microinverters or battery chargers?
The TT8M’s reverse leakage current of 5 µA at 1000 V may seem small, but in high-voltage standby modes (e.g., solar microinverters during night or low-light conditions), cumulative leakage across multiple rectifiers can contribute to measurable power loss and reduced system efficiency. For ultra-low standby power designs targeting <100 mW loss, consider lower-leakage alternatives like the STMicroelectronics GBU8K (1 µA @ 1 kV). However, the TT8M remains viable if total system leakage is acceptable and cost/space constraints favor its compact TT package—just ensure it doesn’t dominate the standby loss budget in multi-rectifier topologies.
What reliability risks should I consider when using the TT8M in industrial motor drive applications with frequent voltage spikes and inductive kickback, and how can I protect it?
In motor drive circuits, inductive loads generate high-voltage transients that can exceed the TT8M’s 1 kV peak reverse voltage, risking avalanche breakdown. Although the TT8M has a robust standard recovery design, repeated exposure to spikes—especially without snubber circuits or TVS diodes—can degrade the junction over time. To mitigate this, add an RC snubber across the AC input or use a transient voltage suppressor (TVS) diode rated for >1.2 kV clamping. Also, ensure the layout minimizes loop inductance to reduce inductive ringing. Without protection, field failures due to cumulative stress are likely, particularly in harsh industrial environments with long cable runs.
Is the TT8M suitable for automotive 12V-to-48V DC-DC converter applications, and what qualifications or derating practices should be applied given its operating temperature range?
The TT8M can be used in 12V-to-48V DC-DC converters, but with caution. While its -55°C to 150°C TJ range meets many automotive under-hood requirements, it lacks AEC-Q101 qualification, which is typically required for direct automotive use. If used in non-safety-critical auxiliary systems (e.g., infotainment power supplies), apply significant derating: limit average current to 6 A (75% of 8 A) and ensure junction temperature stays below 125°C under worst-case ambient (e.g., 105°C under-hood). For safety-critical or engine-control applications, prefer AEC-Q101-qualified alternatives like the ON Semiconductor GBPC810. Always validate long-term reliability under thermal cycling per AEC-Q100 stress tests if deploying in automotive 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.
TT8M CAD Models
Diodes Incorporated TT8M PCB symbols & footprints
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