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Diodes Incorporated TT4M-T
- Part No.:
- TT4M-T
- Manufacturer:
- Diodes Incorporated
- Category:
- Bridge Rectifiers
- Package:
- 4-SMD, Gull Wing
- Datasheet:
-
TT4M-T.pdf
- Description:
- BRIDGE RECT 1PHASE 1KV 4A TTL
- Quantity:
- Payment:
- Shipping:
Inventory:5,932
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Product details
Overview
TT4M from Diodes Incorporated is a 4A standard recovery bridge rectifier in TTL package, rated for 1000V repetitive peak reverse voltage (VRRM), 1.0V max forward voltage at 2A, and 5µA max leakage current at 1000V. It features glass-passivated die construction and is optimized for AC/DC power conversion in industrial power supplies and appliance motor control circuits.
For engineers reviewing the TT4M datasheet, TT4M pinout, TT4M application, or TT4M equivalent, key selection criteria include its 1000V blocking capability, thermal resistance of 60°C/W (junction-to-ambient, no heatsink), 120A non-repetitive surge rating (8.3ms), RoHS-compliant matte tin plating, and TTL package compatibility with standard PCB layouts.
Technical Context
The TT4M integrates four standard recovery diodes in a single-phase full-wave bridge configuration, enabling direct AC-to-DC conversion without external interconnection. Its glass-passivated junction ensures stable reverse leakage (<5µA at 1000V, 25°C) and robust surge tolerance (120A IFSM, 8.3ms).
Thermal performance is defined by dual RθJA ratings: 60°C/W (no heatsink) and 15°C/W (with specified 40mm×30mm×24mm fin heatsink), supporting design flexibility across ambient temperature ranges from –55°C to +150°C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 1000 V - Sustains peak line voltages up to 707V RMS (e.g., 600VAC industrial mains) with safety margin. |
| IF(AV) | 4.0 A - Continuous DC output current capability at 25°C case temperature, derated above 25°C per Figure 1. |
| VF Max | 1.0 V @ 2A - Low conduction loss enables efficient power conversion in low-to-medium frequency (<1 kHz) rectification. |
| IR Max | 5 µA @ 1000V, 25°C - Minimal reverse leakage preserves efficiency in high-impedance hold-up or sensing circuits. |
| IFSM | 120 A @ 8.3ms - Withstands typical AC line surge events (e.g., cold-start inductive loads) without failure. |
| RθJA | 60 °C/W - Defines maximum power dissipation (≈0.67W) before exceeding 150°C junction limit at 25°C ambient. |
Pinout & Package
Package: TTL (single-in-line, 4-terminal molded plastic package with staggered leads; dimensions per Diodes Package Outline TTL, A2 = 1.55 mm, D = 10.20 mm, E = 9.90 mm, e = 5.00 mm).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| ~AC1 | AC Input Terminal 1 | One leg of AC input; connects to transformer secondary or line input; electrically tied to cathode of D1 and anode of D2. |
| ~AC2 | AC Input Terminal 2 | Second leg of AC input; electrically tied to cathode of D3 and anode of D4. |
| +DC | Positive DC Output | Common cathode node of D1 and D3; delivers rectified positive voltage to filter capacitor or load. |
| –DC | Negative DC Output / Ground Reference | Common anode node of D2 and D4; serves as return path and system ground reference point. |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated die | Enables stable IR performance and long-term reliability under humid or thermally cycling conditions. |
| UL Recognized (E364304) | Validates compliance with safety standards for end-equipment certification in industrial and consumer applications. |
| Lead-free, halogen- and antimony-free "Green" construction | Meets RoHS 3 (2015/863/EU) and automotive change-control requirements when qualified per AEC-Q200. |
| TTL package with matte tin-plated leads | Ensures solderability per MIL-STD-202 Method 208 and compatibility with automated PCB assembly processes. |
Applications
| Industrial Power Supply | Appliance Motor Control |
|---|---|
Use Scenario: AC/DC front-end rectification in 100–240VAC input switch-mode power supplies for PLCs and HMIs. IC Role / Device Role / Timing Role: Full-wave bridge rectifier converting mains AC to pulsating DC prior to bulk capacitance and PWM regulation. Use Value: 1000V VRRM accommodates 240VAC + 30% surge; 4A IF(AV) supports >48W continuous output with margin. |
Use Scenario: Rectification stage in universal motor drive circuits for washing machines and HVAC blowers. IC Role / Device Role / Timing Role: Uncontrolled rectifier supplying DC bus to TRIAC or MOSFET-based phase-angle or PWM motor controllers. Use Value: 120A IFSM withstands motor inrush surges; glass passivation prevents leakage-induced torque instability at elevated temperatures. |
| LED Driver Power Stage | DC Power Distribution Unit |
Use Scenario: Input rectification in constant-current LED drivers for street lighting and commercial signage. IC Role / Device Role / Timing Role: Primary-side bridge delivering DC to PFC controller and isolated flyback stage. Use Value: 1.0V VF limits conduction loss at 2A, improving overall driver efficiency (>85%) and reducing heatsink size. |
Use Scenario: Redundant AC input rectification in telecom DC distribution panels with dual 120VAC feeds. IC Role / Device Role / Timing Role: Isolated bridge providing fault-tolerant DC input to bus converters and protection circuitry. Use Value: UL recognition and 5µA IR support safe operation in parallel-fed redundant architectures with minimal cross-talk risk. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar bridge rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| GBU4K (ON Semiconductor) | Same 1000V VRRM, 4A IF(AV), but GBU package (larger footprint, higher RθJA = 70°C/W). | Requires larger PCB area; less suitable for space-constrained designs where TTL's compact 10.2×9.9 mm outline is critical. | Select when legacy GBU footprint compatibility or higher surge margin (140A IFSM) is prioritized over board space. |
| DB107S (Diotec) | Lower 700V VRRM, same 4A rating, SMB package (surface-mount, lower profile but no lead-forming flexibility). | Not suitable for 240VAC+ systems requiring 1000V margin; limited to ≤100VAC auxiliary supplies or low-line regions. | Choose only for cost-sensitive, low-voltage (<120VAC) applications where SMB mounting and reduced height are mandatory. |
Compared with GBU4K and DB107S, TT4M uniquely balances 1000V isolation, TTL package compactness, and 60°C/W thermal resistance-making it optimal for new industrial power supply designs where board area, safety margin, and manufacturability are jointly constrained.
Availability
TT4M is available at Aetrix Electronics and suitable for industrial power supplies, appliance motor control systems, LED driver power stages, and DC power distribution units requiring stable component supply and RoHS-compliant sourcing.
Supply support for TT4M 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, manufacturing, and sales operations across Asia, Europe, and North America.
TT4M belongs to Diodes' standard recovery bridge rectifier product line, engineered for cost-effective, reliable AC/DC conversion in industrial, appliance, and lighting applications where high voltage blocking and thermal stability are essential.
FAQ
What is the maximum allowable junction temperature for TT4M?
The TT4M has a specified operating junction temperature range of –55°C to +150°C. This limit is enforced by thermal derating curves in the datasheet: average forward current must be reduced linearly above 25°C case temperature, reaching zero at 150°C with heatsink or 125°C without heatsink per Figure 1.
Can TT4M be used in surface-mount applications?
Yes-TT4M uses a TTL package with gull-wing leads designed for through-hole mounting, but its matte tin-plated terminals are compatible with reflow soldering when adapted to surface-mount land patterns per Diodes' recommended pad layout (C = 5.00 × 1.80 mm, Y = 2.10 mm). Manual or wave soldering is also supported.
Does TT4M meet AEC-Q200 stress test requirements?
TT4M itself is not AEC-Q200 qualified; however, Diodes offers automotive-grade variants (e.g., TT4M-AQ) manufactured in IATF 16949-certified facilities with PPAP capability. Standard TT4M may be used in automotive applications only after customer-specific qualification and change control approval.
How does thermal resistance change with heatsinking?
TT4M's RθJA improves from 60°C/W (no heatsink) to 15°C/W when mounted on a 15mm×12mm×1.6mm aluminum pad attached to a 40mm×30mm×24mm fin heatsink, per JESD-51 testing. This 4× reduction enables ~4× higher continuous power dissipation before reaching 150°C junction limit.
TT4M-T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- 4-SMD, Gull Wing
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Diode Type:
- Single Phase
- Technology:
- Standard
- Voltage - Peak Reverse (Max):
- 1 kV
- Current - Average Rectified (Io):
- 4 A
- Voltage - Forward (Vf) (Max) @ If:
- 1 V @ 2 A
- Current - Reverse Leakage @ Vr:
- 5 µA @ 1000 V
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- TTL
TT4M-T FAQ
1.How can I place an order for TT4M-T through Aetrix?
Please submit a Request for Quotation (RFQ) for TT4M-T 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 TT4M-T reliable?
The price and inventory of TT4M-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TT4M-T is usually 5 days.
3.What payment methods are accepted for TT4M-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TT4M-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TT4M-T?
TT4M-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TT4M-T 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 TT4M-T?
For technical support, including TT4M-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TT4M-T requirements.
6.How does Aetrix verify that TT4M-T is sourced from the original manufacturer or authorized distributors?
All TT4M-T 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 TT4M-T meets industry standards.
7.What is the process for return or replacement of TT4M-T?
All TT4M-T units undergo pre-shipment inspection (PSI). If there is an issue with TT4M-T, 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 TT4M-T part is unused and in its original packaging.
Return procedure for TT4M-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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