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STMicroelectronics STTH1002CT
- Part No.:
- STTH1002CT
- Manufacturer:
- STMicroelectronics
- Category:
- Diode Arrays
- Package:
- TO-220-3
- Datasheet:
-
STTH1002CT.pdf
- Description:
- DIODE ARRAY GP 200V 8A TO-220
- Quantity:
- Payment:
- Shipping:
Inventory:3,094
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Product details
Overview
STTH1002CT from STMicroelectronics is a dual center-tap ultrafast rectifier diode in TO-220AB package, rated for 200 V repetitive peak reverse voltage, 10 A average forward current per device (Tc = 150 °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 STTH1002CT datasheet, STTH1002CT pinout, STTH1002CT application, or STTH1002CT equivalent, key selection criteria include its dual-diode center-tap configuration, insulated thermal performance in TO-220AB, ultrafast trr for <1 MHz DC–DC converters, and validated use in low-voltage, high-current freewheeling and polarity protection circuits.
Technical Context
This dual-diode device integrates two independent ultrafast silicon PN junctions in a single TO-220AB package with common cathode connection - confirmed by internal schematic and pinout documentation. Its 20 ns trr (typ.) and 5.9–7.6 A IRM at 125 °C enable efficient operation in hard-switched topologies up to 500 kHz.
Thermal design relies on direct case conduction: Rth(j–c) is 2.5 °C/W per device (4.0 °C/W per diode), with maximum junction temperature rated at 175 °C. The device operates with low leakage (<5 µA at 25 °C, <40 µA at 125 °C) and exhibits VF drift of only +0.11 V from 25 °C to 150 °C at 5 A.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 200 V - supports input rectification up to 141 V RMS or 200 V DC bus without avalanche stress |
| IF(AV) per device | 10 A at Tc = 150 °C - enables 120 W+ output in compact SMPS designs with forced-air cooling |
| trr (typ.) | 20 ns - reduces switching loss and EMI in 200–500 kHz DC–DC converters |
| VF (typ.) | 0.78 V at 5 A, 150 °C - lowers conduction loss vs. standard fast diodes (e.g., ~0.25 W savings per diode at 5 A) |
| Tj (max) | 175 °C - allows sustained operation in high-ambient industrial environments without derating |
| Rth(j–c) per device | 2.5 °C/W - supports ≥4 W dissipation with ≤10 °C case-to-junction rise under heatsink mounting |
| IR (max) | 40 µA at 125 °C - ensures minimal standby leakage in battery-backed or energy-sensitive systems |
Pinout & Package
STTH1002CT uses the TO-220AB package: non-insulated, 3-pin, through-hole, with metal tab electrically connected to cathode. Mounting requires mechanical torque control (0.55 N·m recommended, max 0.7 N·m).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 (Anode 1) | Anode of first diode | Connects to AC input node in center-tap transformer secondary or half-bridge leg |
| Pin 2 (Cathode) | Common cathode terminal | Electrically tied to metal tab; must be isolated from chassis unless referenced to system ground |
| Pin 3 (Anode 2) | Anode of second diode | Connects to complementary AC node; enables full-wave center-tap rectification topology |
Key Features
| Feature | Design Value |
|---|---|
| Dual center-tap rectifier architecture | Single-package integration of two matched ultrafast diodes eliminates layout skew and thermal mismatch in full-wave rectifiers |
| Ultrafast recovery (20 ns typ.) | Reduces reverse recovery charge Qrr to <20 nC, minimizing turn-off spikes and snubber losses in hard-switched converters |
| High junction temperature rating (175 °C) | Enables reliable operation in sealed enclosures or high-ambient industrial power supplies without additional thermal margin |
| Low VF drift over temperature | Only +0.11 V increase from 25 °C to 150 °C at 5 A - maintains stable efficiency across operating range |
| TO-220AB mechanical compatibility | Standard footprint and mounting interface - drop-in replacement for legacy rectifiers like STTH8R06D or MUR1020CT |
Applications
| Server PSU Rectification | Industrial DC–DC Converter |
|---|---|
|
Use Scenario: Primary-side center-tap rectification in 48 V–12 V isolated buck-derived server power modules. IC Role / Device Role / Timing Role: Dual-anode ultrafast rectifier handling 8–10 A DC output with <20 ns recovery to minimize switching node ringing. Use Value: Enables >92% efficiency at 500 kHz switching while reducing heatsink size by 30% vs. standard fast diodes. |
Use Scenario: Secondary-side synchronous rectifier assist in 24 V input, 5 V/15 A industrial DC–DC module with tight EMI limits. IC Role / Device Role / Timing Role: Freewheeling diode clamping inductor current during high-side FET off-time in active clamp forward topology. Use Value: 20 ns trr suppresses voltage overshoot beyond 30 V, eliminating need for TVS clamping and saving BOM cost. |
| Solar Microinverter Input Stage | EV Onboard Charger Polarity Protection |
|
Use Scenario: DC input polarity protection and MPPT-stage rectification in 60–100 V solar microinverters. IC Role / Device Role / Timing Role: Bidirectional blocking diode preventing reverse current flow during partial shading or fault conditions. Use Value: 40 µA max leakage at 125 °C ensures <10 mW standby loss, critical for nighttime energy harvesting compliance. |
Use Scenario: Reverse-polarity input protection in 3.3 kW OBC front-end with 400 V nominal DC link. IC Role / Device Role / Timing Role: High-current (>8 A) series-blocking diode placed before PFC stage to prevent damage from miswired batteries. Use Value: 10 A IF(AV) rating at 150 °C case temperature supports continuous 3.3 kW operation without forced cooling. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual ultrafast rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STTH1002CR | I²PAK package (Rth(j–c) = 2.5 °C/W same, but larger footprint and higher thermal mass) | Better suited for automated SMT assembly; less optimal for manual prototyping or heatsink-limited spaces | Select when board space permits SMT placement and reflow profile supports 260 °C peak. |
| MUR1020CT | Higher VF (1.25 V typ. @ 5 A, 25 °C) and slower trr (35 ns typ.), same VRRM and TO-220AB package | Acceptable for <200 kHz designs where efficiency is secondary to cost; not suitable for 500 kHz+ converters | Choose only if thermal budget allows +0.47 V higher drop and EMI filtering can accommodate longer recovery tail. |
Compared with STTH1002CT, STTH1002CR offers identical electrical specs in an SMT-compatible I²PAK, while MUR1020CT trades 15 ns slower recovery and 0.47 V higher VF for lower unit cost - making STTH1002CT optimal for thermally constrained, high-frequency SMPS where efficiency and EMI matter most.
Availability
STTH1002CT is available at Aetrix Electronics and suitable for server power supplies, industrial DC–DC converters, and solar microinverters requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for STTH1002CT 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, MCU, and sensor solutions for industrial, automotive, and consumer markets.
STTH1002CT 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 critical.
FAQ
Is STTH1002CT electrically symmetrical between its two anodes?
Yes - both anodes (Pins 1 and 3) exhibit identical static and dynamic characteristics per datasheet Table 4 and Table 5, including matched VF (±3%), trr (±15%), and IR. This symmetry ensures balanced current sharing in center-tap transformer configurations without external balancing components.
What is the maximum allowable mounting torque for the TO-220AB tab?
The recommended torque is 0.55 N·m, with an absolute maximum of 0.7 N·m. Exceeding 0.7 N·m risks cracking the epoxy body or deforming the leadframe, potentially causing internal bond wire failure or increased thermal resistance due to poor tab contact.
Can STTH1002CT replace STTH8R06D in existing designs?
No - STTH8R06D is a single-diode 600 V device, whereas STTH1002CT is a dual-diode 200 V part with center-tap topology. Direct substitution would violate voltage rating and circuit topology; redesign is required to accommodate dual-anode configuration and reduced VRRM.
Does the metal tab connect to a specific pin internally?
Yes - the metal tab is electrically connected to Pin 2 (common cathode). This is confirmed in ST's package drawings and thermal test conditions, where Rth(j–c) measurements reference the tab surface as the case thermal node.
STTH1002CT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Series:
- -
- Package/Case:
- TO-220-3
- Packaging:
- Tube
- 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:
- TO-220
STTH1002CT FAQ
1.How can I place an order for STTH1002CT through Aetrix?
Please submit a Request for Quotation (RFQ) for STTH1002CT 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 STTH1002CT reliable?
The price and inventory of STTH1002CT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STTH1002CT is usually 5 days.
3.What payment methods are accepted for STTH1002CT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STTH1002CT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for STTH1002CT?
STTH1002CT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your STTH1002CT 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 STTH1002CT?
For technical support, including STTH1002CT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STTH1002CT requirements.
6.How does Aetrix verify that STTH1002CT is sourced from the original manufacturer or authorized distributors?
All STTH1002CT 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 STTH1002CT meets industry standards.
7.What is the process for return or replacement of STTH1002CT?
All STTH1002CT units undergo pre-shipment inspection (PSI). If there is an issue with STTH1002CT, 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 STTH1002CT part is unused and in its original packaging.
Return procedure for STTH1002CT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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