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STMicroelectronics STTH1002CR
- Part No.:
- STTH1002CR
- Manufacturer:
- STMicroelectronics
- Category:
- Diode Arrays
- Package:
- TO-262-3 Long Leads, I2PAK, TO-262AA
- Datasheet:
-
STTH1002CR.pdf
- Description:
- DIODE ARRAY GP 200V 8A I2PAK
- Quantity:
- Payment:
- Shipping:
Inventory:18
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Product details
Overview
STTH1002CR from STMicroelectronics is a dual center-tap ultrafast rectifier diode in I²PAK (TO-263) package, rated for 200 V repetitive peak reverse voltage and 8 A average forward current per diode at Tc = 135 °C. It delivers low conduction loss (VF typ. 0.78 V @ 5 A, 150 °C), ultrafast recovery (trr typ. 20 ns), and high junction temperature capability (Tj max = 175 °C), enabling use in high-frequency DC–DC converters and SMPS secondary-side rectification.
For engineers reviewing the STTH1002CR datasheet, STTH1002CR pinout, STTH1002CR application, or STTH1002CR equivalent, key selection criteria include dual-diode thermal coupling behavior, junction-to-case thermal resistance (4.0 °C/W per diode), insulated mounting requirements, and dIF/dt-dependent reverse recovery performance under real switching conditions.
Technical Context
This dual-center-tap configuration integrates two independent ultrafast epitaxial diodes sharing a common cathode terminal, optimized for synchronous or center-tapped transformer topologies. Its low Qrr (typ. 12 nC @ dIF/dt = 100 A/µs) and minimal IRM (5.9 A typ. @ 125 °C) reduce switching losses and EMI in hard-switched 100–500 kHz power stages.
The I²PAK package provides 4.0 °C/W junction-to-case thermal resistance per diode and supports direct heatsink mounting via isolated tab. Thermal coupling between diodes is quantified by Rth(c) = 1.0 °C/W, enabling accurate loss distribution modeling when both diodes conduct simultaneously.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 200 V - Withstands 200 V repetitive reverse voltage without breakdown; suitable for 12–48 V output SMPS with 1.5× safety margin. |
| IF(AV) per diode | 8 A @ Tc = 135 °C - Sustains 8 A DC forward current per diode with case temperature held at 135 °C; defines continuous conduction capability. |
| VF (typ) | 0.78 V @ 5 A, 150 °C - Low forward drop reduces conduction loss to ~3.9 W per diode at 5 A, critical for efficiency above 90%. |
| trr (typ) | 20 ns @ IF = 1 A, VR = 30 V, dIF/dt = 100 A/µs - Enables clean turn-off in high-frequency converters up to 500 kHz without tail current penalties. |
| Tj (max) | 175 °C - Allows operation in thermally constrained environments such as sealed industrial power supplies or automotive under-hood DC–DC modules. |
| Rth(j-c) per diode | 4.0 °C/W - Enables 20 W dissipation per diode with ≤80 °C temperature rise from case to junction; requires minimum 25 cm² copper pad for thermal relief. |
Pinout & Package
I²PAK (TO-263) package with isolated metal tab, epoxy meeting UL94 V0, and recommended mounting torque of 0.55 N·m. Tab is electrically connected to cathode; anode terminals are leads 1 and 3.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Lead 1 | Anode 1 | Input terminal for first diode leg; connects to transformer center-tap winding or switch node in half-bridge secondary. |
| Tab (exposed metal) | Cathode (common) | Shared cathode for both diodes; must be electrically isolated from heatsink unless system ground reference permits. |
| Lead 3 | Anode 2 | Input terminal for second diode leg; used for complementary phase in center-tapped full-wave rectification. |
Key Features
| Feature | Design Value |
|---|---|
| Ultrafast recovery | trr = 20 ns typ. minimizes reverse recovery charge (Qrr ≈ 12 nC), reducing switching loss and snubber stress in high-frequency SMPS. |
| Dual center-tap topology | Two matched diodes share one cathode, enabling compact full-wave rectification without external interconnection or imbalance-induced thermal drift. |
| High Tj rating | 175 °C maximum junction temperature supports operation in sealed enclosures or high-ambient industrial environments without derating. |
| Low VF at elevated Tj | VF = 0.78 V @ 150 °C enables stable conduction loss across temperature, improving efficiency consistency over -40 to +125 °C ambient range. |
| ECOPACK®2 compliance | Meets RoHS and halogen-free requirements per ST's environmental standard, supporting green manufacturing and end-of-life compliance. |
Applications
| Server PSU Secondary Rectification | Industrial DC–DC Converter |
|---|---|
|
Use Scenario: 12 V/200 A output stage in 80 PLUS Titanium server power supply using center-tapped transformer and synchronous rectification assist. IC Role / Device Role / Timing Role: Dual ultrafast rectifier providing full-wave AC–DC conversion on secondary side; replaces discrete diode pairs with matched trr and VF. Use Value: 20 ns trr ensures minimal overlap loss during 300 kHz switching, while 4.0 °C/W Rth(j-c) allows direct heatsink mounting without thermal interface pads. |
Use Scenario: 24 V input to 5 V/30 A isolated DC–DC module for PLC backplane power, operating continuously at 65 °C ambient. IC Role / Device Role / Timing Role: Center-tap rectifier in forward converter secondary, handling bidirectional current during dead time and freewheeling. Use Value: 175 °C Tj rating eliminates need for airflow-dependent derating; low IR leakage (<5 µA @ 25 °C) prevents standby power drift. |
| Telecom Brick Power Supply | EV Onboard Charger Auxiliary Supply |
|
Use Scenario: 48 V telecom rectifier module delivering 3.3 V/15 A bias rail for digital signal processors and FPGAs. IC Role / Device Role / Timing Role: High-frequency rectifier in resonant LLC secondary, where fast recovery avoids voltage spikes during zero-current switching transitions. Use Value: 25 ns max trr guarantees clean turn-off even at dIF/dt > 200 A/µs, suppressing EMI generation in noise-sensitive baseband circuits. |
Use Scenario: Auxiliary 12 V supply in EV OBC converting 400 V battery-derived 48 V intermediate bus to control logic voltage. IC Role / Device Role / Timing Role: Freewheeling and polarity protection diode in buck-derived auxiliary regulator, exposed to repeated surge currents. Use Value: 50 A non-repetitive surge rating (IFSM) withstands inrush during cold start; TO-263 isolation supports functional safety creepage/clearance requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual ultrafast rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STTH1002CT | Same die, TO-220AB package; Rth(j-c) = 2.5 °C/W per device (not per diode); no electrical isolation on tab. | Requires insulating washer for heatsink mounting; better suited for cost-sensitive open-frame PSUs with mechanical isolation. | Select when board space allows larger TO-220 footprint and thermal design accommodates higher Rth(j-c) per device. |
| STTH1002CG-TR | Same die, D²PAK (TO-263-3) package; identical pinout and Rth(j-c) = 4.0 °C/W per diode; tape-and-reel packaging only. | Optimized for automated SMT assembly; same thermal and electrical performance but lacks tube option for prototyping. | Select for high-volume production requiring SMT placement and reel-fed feeding; not suitable for hand-soldered evaluation. |
Compared with STTH1002CT and STTH1002CG-TR, the STTH1002CR offers identical die performance in I²PAK with tube packaging-enabling manual assembly verification and heatsink-mounting flexibility without insulating hardware, unlike TO-220AB, while avoiding SMT-only constraints of D²PAK tape-and-reel.
Availability
STTH1002CR is available at Aetrix Electronics and suitable for server power supplies, industrial DC–DC converters, telecom brick modules, and EV onboard charger auxiliary supplies requiring stable component supply, long-lifecycle support, and traceable sourcing.
Supply support for STTH1002CR 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, microcontroller, power, and sensor solutions for industrial, automotive, and consumer markets.
STTH1002CR belongs to ST's high-voltage ultrafast diode product line, engineered specifically for high-efficiency, high-frequency switch-mode power conversion where low Qrr, tight VF matching, and thermal robustness are critical.
FAQ
What is the thermal coupling behavior between the two diodes in STTH1002CR?
The STTH1002CR exhibits measured thermal coupling of Rth(c) = 1.0 °C/W between diodes, meaning power dissipated in one diode raises the junction temperature of the adjacent diode by 1.0 °C per watt. This must be accounted for in loss modeling when both diodes conduct simultaneously, especially in center-tapped forward or push-pull topologies.
Can STTH1002CR be used in synchronous rectification designs?
No-STTH1002CR is a passive ultrafast diode, not a MOSFET-based synchronous rectifier. It functions as a freewheeling or rectifying element in non-controlled topologies. For synchronous rectification, ST offers dedicated SR controllers (e.g., STSR3) paired with low-RDS(on) MOSFETs, not diode replacements.
Is the I²PAK tab electrically isolated, and what is its voltage rating?
Yes-the I²PAK tab is electrically isolated from the internal die and rated for 2000 VRMS sine-wave insulation (per TO-220FPAB specification referenced in datasheet). This allows direct mounting to grounded heatsinks without additional insulation, provided system safety standards permit cathode-referenced grounding.
How does trr vary with dIF/dt, and why does it matter in layout?
trr decreases from 25 ns to 15 ns as dIF/dt increases from 100 to 200 A/µs (Fig. 8). Layout must minimize stray inductance in the diode loop-otherwise, high dIF/dt induces voltage overshoot (V = L × di/dt) that can exceed VRRM or trigger parasitic oscillation, degrading reliability and EMI performance.
STTH1002CR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Series:
- -
- Package/Case:
- TO-262-3 Long Leads, I2PAK, TO-262AA
- Packaging:
- Bulk
- 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:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- I2PAK
STTH1002CR FAQ
1.How can I place an order for STTH1002CR through Aetrix?
Please submit a Request for Quotation (RFQ) for STTH1002CR 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 STTH1002CR reliable?
The price and inventory of STTH1002CR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STTH1002CR is usually 5 days.
3.What payment methods are accepted for STTH1002CR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STTH1002CR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for STTH1002CR?
STTH1002CR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your STTH1002CR 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 STTH1002CR?
For technical support, including STTH1002CR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STTH1002CR requirements.
6.How does Aetrix verify that STTH1002CR is sourced from the original manufacturer or authorized distributors?
All STTH1002CR 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 STTH1002CR meets industry standards.
7.What is the process for return or replacement of STTH1002CR?
All STTH1002CR units undergo pre-shipment inspection (PSI). If there is an issue with STTH1002CR, 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 STTH1002CR part is unused and in its original packaging.
Return procedure for STTH1002CR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
STTH1002CR Tags
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