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STMicroelectronics STTH1202FP
- Part No.:
- STTH1202FP
- Manufacturer:
- STMicroelectronics
- Category:
- Single Diodes
- Package:
- TO-220-2 Full Pack
- Datasheet:
-
STTH1202FP.pdf
- Description:
- DIODE GP 200V 12A TO220FPAC
- Quantity:
- Payment:
- Shipping:
Inventory:2,598
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Product details
Overview
STTH1202FP from STMicroelectronics is an ultrafast recovery silicon diode in TO-220FPAC package, rated for 12 A average forward current, 200 V repetitive peak reverse voltage, and 175 °C maximum junction temperature. It delivers low conduction losses (VF typ. 0.82 V at 150 °C), negligible switching losses, and fast reverse recovery time (trr typ. 18 ns at 125 °C), making it suitable for high-frequency inverters and free-wheeling circuits in industrial power supplies.
For engineers reviewing the STTH1202FP datasheet, STTH1202FP pinout, STTH1202FP application, or STTH1202FP equivalent, key selection criteria include thermal resistance (Rth(j-c) = 5 °C/W), insulated case rating (1500 VRMS), and dynamic performance under high dIF/dt (−200 A/µs) at elevated junction temperature.
Technical Context
This diode employs ST's planar platinum-doped technology to achieve stable ultrafast recovery with minimal tail current. Its low VF and trr enable efficient operation in hard-switched SMPS topologies where conduction and switching losses must be jointly minimized.
The TO-220FPAC package provides electrical insulation (1500 VRMS) and a defined thermal path from junction to case (5 °C/W), supporting conduction-cooled mounting on heatsinks without additional isolation hardware-critical for compact, high-power-density designs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 200 V - Withstands up to 200 V repetitive reverse voltage without breakdown, enabling use in 12–48 V DC bus systems with margin. |
| IF(AV) | 12 A - Sustains 12 A average forward current at Tc = 105 °C, defining continuous power handling in thermally constrained layouts. |
| trr (typ) | 18 ns - Measured at IF = 12 A, dIF/dt = −200 A/µs, VR = 160 V, Tj = 125 °C; enables >500 kHz switching in resonant converters. |
| VF (typ) | 0.82 V - At IF = 12 A, Tj = 150 °C; reduces conduction loss to ~9.8 W per device in high-current paths. |
| Rth(j-c) | 5 °C/W - Junction-to-case thermal resistance for TO-220FPAC; determines minimum heatsink requirement for thermal management. |
| IRM (max) | 7.5 A - Peak reverse recovery current under worst-case conditions; informs snubber sizing and EMI filter design. |
| Tj (max) | 175 °C - Maximum allowable junction temperature; supports operation in sealed enclosures or high ambient environments. |
Pinout & Package
TO-220FPAC package: insulated plastic housing with three leads (anode, cathode, case tab), 1500 VRMS isolation between case and internal die, epoxy meeting UL94 V0, recommended torque 0.55 Nm.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (Lead 1) | Forward current entry point | Connected to low-side switch node or input rail; carries full load current during conduction phase. |
| Cathode (Lead 2) | Forward current exit point | Connected to output rail or switching node; defines polarity protection direction and freewheeling path orientation. |
| Case Tab (Lead 3) | Electrically isolated thermal interface | Mounts directly to heatsink; electrically floating at 1500 VRMS isolation-eliminates need for insulating pads in many applications. |
Key Features
| Feature | Design Value |
|---|---|
| Ultrafast recovery | trr = 18 ns at 125 °C ensures minimal switching loss and reduced EMI generation in high-frequency SMPS. |
| Low forward voltage | VF = 0.82 V at 12 A / 150 °C cuts conduction loss by ~25% vs. standard fast diodes in same package. |
| High junction temperature rating | 175 °C Tj(max) allows sustained operation in enclosed industrial drives without derating at 105 °C ambient. |
| Insulated TO-220FPAC package | 1500 VRMS isolation enables direct heatsink mounting in grounded-chassis systems without extra insulation layers. |
Applications
| Industrial Switch-Mode Power Supplies | DC Motor Drive Freewheeling |
|---|---|
Use Scenario: Secondary-side rectification in 1–3 kW telecom and server PSUs operating at 200–500 kHz. IC Role / Device Role / Timing Role: Ultrafast freewheeling diode clamping in synchronous rectifier or flyback secondary stage. Use Value: 18 ns trr minimizes dead-time loss and reduces output ripple compared to 50+ ns alternatives. |
Use Scenario: Bidirectional energy recirculation in 24–48 V brushed DC motor H-bridge drivers. IC Role / Device Role / Timing Role: Reverse-polarity protection and inductive kickback suppression during PWM commutation. Use Value: 7.5 A IRM withstands high dIF/dt transients without snap-back, preventing gate driver latch-up. |
| Solar Microinverter DC-Link Clamping | Uninterruptible Power Supply (UPS) Battery Charging |
Use Scenario: DC-link voltage clamping and reverse current blocking in single-phase transformerless microinverters. IC Role / Device Role / Timing Role: High-reliability anti-parallel diode in IGBT half-bridge legs for grid-synchronization waveforms. Use Value: 175 °C Tj rating ensures long-term stability under solar array thermal cycling (−40 to +85 °C ambient). |
Use Scenario: Input rectification and battery isolation in line-interactive UPS units with active PFC front-end. IC Role / Device Role / Timing Role: Low-loss AC/DC conversion and reverse current blocking during battery discharge mode. Use Value: 0.82 V VF reduces heat generation in confined chassis, extending electrolytic capacitor lifetime by >30%. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar ultrafast diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STTH1202D | Same die, TO-220AC package (non-insulated); Rth(j-c) = 2.5 °C/W; no case isolation. | Requires insulating pad when mounted to grounded heatsink; better thermal performance but higher assembly cost. | Select when thermal budget is tight and isolation can be implemented externally. |
| IXYS MUR1220CT | 12 A / 200 V ultrafast dual common-cathode diode in TO-220AB; trr = 35 ns (typ); VF = 0.92 V (typ) at 125 °C. | Offers dual configuration for bridge rectification; slower recovery increases switching loss above 200 kHz. | Select for cost-sensitive full-wave rectifier designs where trr < 25 ns is not required. |
Compared with STTH1202D and MUR1220CT, STTH1202FP uniquely combines 1500 VRMS insulation, 18 ns trr at 125 °C, and 5 °C/W thermal resistance-making it optimal for space-constrained, high-frequency, grounded-chassis industrial inverters requiring zero added isolation hardware.
Availability
STTH1202FP is available at Aetrix Electronics and suitable for industrial switch-mode power supplies, DC motor drive freewheeling, and solar microinverter DC-link clamping requiring stable component supply across multi-year production cycles.
Supply support for STTH1202FP 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, digital, and mixed-signal ICs for automotive, industrial, and consumer markets.
The STTH series targets high-efficiency power conversion, with STTH1202FP specifically engineered for ultrafast, high-temperature, insulated-diode applications in industrial motor drives and renewable energy systems.
FAQ
What is the maximum surge current rating for STTH1202FP?
The STTH1202FP has a non-repetitive peak forward surge current (IFSM) of 100 A at tp = 10 ms (sinusoidal waveform). This rating applies at Tj = 25 °C and defines short-duration overload capability during startup or fault conditions before protection circuitry activates.
Can STTH1202FP be used in place of a standard fast recovery diode in a 100 kHz PFC boost converter?
Yes-its 18 ns trr (at 125 °C) and low Qrr ensure minimal switching loss and reduced EMI at 100 kHz. Unlike standard fast diodes (trr > 50 ns), STTH1202FP avoids reverse recovery spikes that distort input current waveforms and stress MOSFETs in critical conduction mode (CCM) PFC stages.
Is the TO-220FPAC case electrically connected to any internal terminal?
No-the TO-220FPAC case is fully insulated from both anode and cathode terminals, providing 1500 VRMS isolation. The metal tab serves only as a thermal interface; no electrical connection exists unless externally bridged via PCB layout or mounting hardware.
How does junction temperature affect reverse recovery performance?
At 125 °C, trr increases to 18 ns (vs. 28 ns at 25 °C) and IRM rises to 7.5 A due to carrier lifetime extension. This behavior is documented in Figure 7 and Figure 8 of the datasheet-designers must size snubbers and gate drivers based on worst-case 125 °C dynamic parameters, not room-temperature values.
STTH1202FP Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Series:
- -
- Package/Case:
- TO-220-2 Full Pack
- Packaging:
- Tube
- Product Status:
- Obsolete
- Technology:
- Standard
- Voltage - DC Reverse (Vr) (Max):
- 200 V
- Current - Average Rectified (Io):
- 12A
- Voltage - Forward (Vf) (Max) @ If:
- 1.1 V @ 12 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- 35 ns
- Current - Reverse Leakage @ Vr:
- 10 µA @ 200 V
- Capacitance @ Vr, F:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- TO-220FPAC
- Operating Temperature - Junction:
- 175°C (Max)
STTH1202FP FAQ
1.How can I place an order for STTH1202FP through Aetrix?
Please submit a Request for Quotation (RFQ) for STTH1202FP 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 STTH1202FP reliable?
The price and inventory of STTH1202FP are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STTH1202FP is usually 5 days.
3.What payment methods are accepted for STTH1202FP?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STTH1202FP transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for STTH1202FP?
STTH1202FP orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your STTH1202FP 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 STTH1202FP?
For technical support, including STTH1202FP datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STTH1202FP requirements.
6.How does Aetrix verify that STTH1202FP is sourced from the original manufacturer or authorized distributors?
All STTH1202FP 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 STTH1202FP meets industry standards.
7.What is the process for return or replacement of STTH1202FP?
All STTH1202FP units undergo pre-shipment inspection (PSI). If there is an issue with STTH1202FP, 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 STTH1202FP part is unused and in its original packaging.
Return procedure for STTH1202FP:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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