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STMicroelectronics STTH1002CB-TR
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- Part No.:
- STTH1002CB-TR
- Manufacturer:
- STMicroelectronics
- Category:
- Diode Arrays
- Package:
- TO-252-3, DPAK (2 Leads + Tab), SC-63
- Datasheet:
-
STTH1002CB-TR.pdf
- Description:
- DIODE ARRAY GP 200V 8A DPAK
- Quantity:
- Payment:
- Shipping:
Inventory:16,312
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Product details
Overview
STTH1002CB-TR from STMicroelectronics is a dual-center-tap ultrafast silicon rectifier diode in DPAK package, rated for 200 V repetitive peak reverse voltage, 8 A average forward current per diode (Tc = 155 °C), and 20 ns typical reverse recovery time. It delivers low conduction loss (VF typ. 0.78 V at 5 A, 150 °C) and high thermal robustness (Tj max = 175 °C), designed for primary/secondary rectification in high-frequency switch-mode power supplies.
For engineers reviewing the STTH1002CB-TR datasheet, STTH1002CB-TR pinout, STTH1002CB-TR application, or STTH1002CB-TR equivalent, this device is selected for low-loss, high-reliability DC–DC conversion where fast switching, low leakage (<5 µA @ 25 °C), and insulated thermal performance are critical - especially in compact, thermally constrained 12–48 V output SMPS designs.
Technical Context
This dual-diode configuration shares a common cathode terminal and operates as a center-tapped full-wave rectifier. Each diode exhibits independent thermal resistance (Rth(j-c) = 4.0 °C/W per diode in DPAK), enabling accurate loss modeling using P = 0.73 × IF(AV) + 0.032 × IF²(RMS).
Dynamic behavior is optimized for dIF/dt up to 200 A/µs, with trr tightly controlled at 20–25 ns (typ./max) and IRM limited to 7.6 A under harsh conditions (Tj = 125 °C, VR = 160 V). The DPAK package provides surface-mount compatibility while maintaining 2000 VRMS insulation capability via internal isolation structure.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 200 V - Withstands 200 V repetitive reverse voltage without breakdown; suitable for 48 V bus-derived topologies with safety margin. |
| IF(AV) per diode | 8 A at Tc = 155 °C - Sustains continuous 8 A DC forward current per diode when case temperature is held at 155 °C. |
| trr (typ) | 20 ns - Enables operation at >500 kHz switching frequencies with minimal switching loss and EMI generation. |
| VF (typ) | 0.78 V at 5 A, 150 °C - Low forward drop reduces conduction loss by ~15% vs. standard fast diodes, improving efficiency in high-current rails. |
| Tj (max) | 175 °C - Allows reliable operation in sealed or high-ambient industrial power enclosures without derating penalties. |
| IR (max) | 40 µA at 125 °C - Ultra-low leakage preserves standby efficiency and prevents unintended discharge in hold-up capacitor circuits. |
| Rth(j-c) per diode | 4.0 °C/W - Enables precise junction temperature estimation for thermal design; supports 3.2 W dissipation before reaching 175 °C at 25 °C case. |
Pinout & Package
DPAK (TO-252) surface-mount package with 3 terminals: two anodes (A1, A2) and one shared cathode (K). Insulated construction meets 2000 VRMS isolation rating. Thermal pad on underside requires soldered copper area ≥ 100 mm² for rated current handling.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A1 | Anode 1 | Input terminal for first half of center-tapped transformer secondary; must be routed with low-inductance path to minimize voltage overshoot during turn-off. |
| A2 | Anode 2 | Input terminal for second half of center-tapped secondary; electrically isolated from A1 but thermally coupled on shared die substrate. |
| K | Common Cathode | Output node for full-wave rectified DC; serves as main thermal and current return path - requires direct connection to large copper pour or heatsink. |
Key Features
| Feature | Design Value |
|---|---|
| Ultrafast recovery | 20 ns trr enables clean zero-voltage switching in LLC resonant converters and reduces snubber losses in hard-switched flyback designs. |
| Low VF at high Tj | 0.78 V typ. at 150 °C ensures stable regulation and reduced thermal runaway risk in high-temperature environments. |
| Dual-diode integration | Single DPAK footprint replaces two discrete diodes, saving PCB area and eliminating mismatch-induced imbalance in center-tap rectifiers. |
| ECOPACK®2 compliance | Halogen-free, RoHS-compliant epoxy meets UL94 V0 flammability rating - qualified for industrial and medical power applications. |
| High IFSM | 50 A non-repetitive surge rating withstands inrush currents during cold-start or output short-circuit events without degradation. |
Applications
| Server PSU Rectification | Industrial DC–DC Converter |
|---|---|
|
Use Scenario: Secondary-side synchronous rectification replacement in 1U server PSUs delivering 500–1000 W at 12 V output. IC Role / Device Role / Timing Role: Dual-center-tap ultrafast rectifier providing full-wave output from center-tapped transformer; operates at 300–500 kHz switching frequency. Use Value: 20 ns trr minimizes reverse recovery loss, improving efficiency by 0.4–0.6% over standard fast diodes at 40 A load, directly reducing thermal stress on heatsinks. |
Use Scenario: Input rectification stage in 24 V input, 5 V/20 A isolated DC–DC module for PLC backplanes. IC Role / Device Role / Timing Role: High-reliability AC–DC front-end rectifier handling 100–120 VAC input with wide ambient range (-40 to +85 °C). Use Value: 175 °C Tj(max) and <5 µA IR at 125 °C ensure stable operation during extended thermal cycling, extending field lifetime beyond 10 years. |
| Telecom Power Shelf | EV Charger Auxiliary Supply |
|
Use Scenario: 48 V output rectification in telecom shelf power modules requiring high power density and low EMI. IC Role / Device Role / Timing Role: Center-tapped full-wave rectifier in phase-shifted full-bridge topology operating at 200–300 kHz. Use Value: Matched trr between diodes (±15% typical) ensures balanced current sharing and eliminates cross-conduction risk in paralleled outputs. |
Use Scenario: Auxiliary 12 V supply rectification in liquid-cooled EV on-board chargers exposed to under-hood temperatures. IC Role / Device Role / Timing Role: High-temperature rectifier converting transformer output to stable 12 V rail powering gate drivers and MCU. Use Value: 4.0 °C/W Rth(j-c) allows direct thermal coupling to cold plate, maintaining Tj < 150 °C even at 8 A continuous load in 105 °C ambient. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar ultrafast dual-center-tap rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STTH1002CT | TO-220AB through-hole package; higher Rth(j-c) = 2.5 °C/W per device (not per diode); same electrical specs. | Requires mounting hardware and larger board space; better suited for prototyping or low-volume industrial assemblies with manual assembly. | Select when mechanical robustness, serviceability, or legacy footprint compatibility outweighs surface-mount density requirements. |
| VS-10ETH02-M3 | Vishay part in DPAK; 200 V VRRM, 10 A IF(AV) per diode, but trr = 35 ns (typ) - 75% slower recovery than STTH1002CB-TR. | Acceptable in ≤200 kHz converters; unsuitable for high-frequency resonant topologies due to elevated switching loss and EMI. | Choose only if cost sensitivity dominates and switching frequency remains below 250 kHz with adequate snubber design. |
Compared with STTH1002CT and VS-10ETH02-M3, STTH1002CB-TR uniquely balances DPAK compactness, 20 ns trr for high-frequency efficiency, and 175 °C thermal capability - making it optimal for space-constrained, high-efficiency, high-reliability SMPS where both conduction and switching losses must be minimized simultaneously.
Availability
STTH1002CB-TR is available at Aetrix Electronics and suitable for server power supplies, industrial DC–DC converters, and telecom power shelves requiring stable component supply, long-term lifecycle support, and consistent parametric performance across production batches.
Supply support for STTH1002CB-TR 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
STMicroelectronics is a global semiconductor leader headquartered in Geneva, Switzerland, designing and manufacturing analog, power, microcontroller, and sensor solutions for industrial, automotive, and consumer markets.
STTH1002CB-TR belongs to ST's high-efficiency ultrafast diode product line, engineered specifically for high-frequency switch-mode power conversion where low trr, low VF, and thermal resilience are mandatory for efficiency and reliability.
FAQ
What is the maximum recommended PCB copper area under the thermal pad for STTH1002CB-TR?
The DPAK thermal pad requires a minimum 100 mm² exposed copper area connected to internal ground or power planes via ≥4 thermal vias (0.3 mm diameter, filled with solder). This achieves the specified Rth(j-c) = 4.0 °C/W; reducing copper area increases junction temperature linearly - e.g., 50 mm² raises thermal resistance to ~6.5 °C/W.
Can STTH1002CB-TR replace a single ultrafast diode in a bridge rectifier configuration?
No - STTH1002CB-TR integrates two anodes and one common cathode, forming a center-tapped full-wave rectifier. It cannot substitute for a single-diode position in a standard bridge. For bridge replacement, use STTH1002S (single-diode DPAK variant) or parallel two STTH1002CB-TR units with external cathode isolation.
Is the TO-220FPAB version (STTH1002CFP) electrically identical to STTH1002CB-TR?
Yes - all STTH1002x variants share identical silicon die, VRRM, IF(AV), trr, VF, and thermal limits. Differences are purely mechanical: TO-220FPAB adds 2000 VRMS insulation and screw-mount capability, while DPAK offers surface-mount density and lower profile. Electrical performance is fully interchangeable.
Does STTH1002CB-TR require a snubber circuit in a 300 kHz flyback converter?
A snubber is recommended but not always mandatory. With trr = 20 ns and dIF/dt up to 200 A/µs, voltage spikes remain manageable below 100 V overshoot when layout inductance is <20 nH. However, for production robustness across line/load transients, a 100 Ω + 100 pF RC snubber across each anode-to-cathode improves EMI and reduces stress on the transformer's interwinding capacitance.
STTH1002CB-TR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Series:
- -
- Package/Case:
- TO-252-3, DPAK (2 Leads + Tab), SC-63
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Diode Configuration:
- 1 Pair Common Cathode
- Technology:
- Standard
- Voltage - DC Reverse (Vr) (Max):
- 200 V
- Current - Average Rectified (Io) (per Diode):
- 8A
- Voltage - Forward (Vf) (Max) @ If:
- 1.1 V @ 5 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- 25 ns
- Current - Reverse Leakage @ Vr:
- 5 µA @ 200 V
- Operating Temperature - Junction:
- 175°C (Max)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DPAK
STTH1002CB-TR FAQ
1.How can I place an order for STTH1002CB-TR through Aetrix?
Please submit a Request for Quotation (RFQ) for STTH1002CB-TR 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 STTH1002CB-TR reliable?
The price and inventory of STTH1002CB-TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STTH1002CB-TR is usually 5 days.
3.What payment methods are accepted for STTH1002CB-TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STTH1002CB-TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for STTH1002CB-TR?
STTH1002CB-TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your STTH1002CB-TR 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 STTH1002CB-TR?
For technical support, including STTH1002CB-TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STTH1002CB-TR requirements.
6.How does Aetrix verify that STTH1002CB-TR is sourced from the original manufacturer or authorized distributors?
All STTH1002CB-TR 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 STTH1002CB-TR meets industry standards.
7.What is the process for return or replacement of STTH1002CB-TR?
All STTH1002CB-TR units undergo pre-shipment inspection (PSI). If there is an issue with STTH1002CB-TR, 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 STTH1002CB-TR part is unused and in its original packaging.
Return procedure for STTH1002CB-TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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