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STMicroelectronics STTH25M06B-TR
- Part No.:
- STTH25M06B-TR
- Manufacturer:
- STMicroelectronics
- Category:
- Single Diodes
- Package:
- TO-252-3, DPAK (2 Leads + Tab), SC-63
- Datasheet:
-
STTH25M06B-TR.pdf
- Description:
- DIODE GP 600V 25A TO220FPAC
- Quantity:
- Payment:
- Shipping:
Inventory:13,961
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Product details
Overview
STTH25M06B-TR from STMicroelectronics is an ultrafast recovery 600 V, 25 A power rectifier in DPAK package, optimized for high-frequency boost and LLC clamping circuits in telecom power supplies and air conditioning systems. It delivers 25 ns typical reverse recovery time, 1.6 V typical forward voltage at 25 °C, and supports 175 °C maximum junction temperature with robust ESD tolerance and high surge current capability (170 A, 10 ms).
For engineers reviewing the STTH25M06B-TR datasheet, STTH25M06B-TR pinout, STTH25M06B-TR application, or STTH25M06B-TR equivalent, key selection criteria include reverse recovery softness (SFACTOR >0.4), low conduction loss (P = 1.04×IF(AV) + 0.0385×IF²(RMS)), thermal resistance (Rth(j-c) = 0.5 °C/W), and ECOPACK2 compliance for industrial-grade reliability.
Technical Context
This diode employs ST's proprietary ultrafast technology to minimize switching losses in resonant topologies. Its soft reverse recovery (SFACTOR >0.4 at dIF/dt = 200 A/µs, Tj = 125 °C) suppresses voltage overshoot and EMI during turn-off, critical for LLC half-bridge clamp operation.
The device operates across -65 °C to +175 °C junction range and maintains stable leakage (<800 µA at 125 °C, VR = 600 V) and forward voltage (1.3–2.0 V at 150 °C, IF = 25 A), enabling reliable performance under heavy-duty thermal cycling in PFC stages.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 600 V - Withstands repetitive reverse voltage up to 600 V without breakdown, suitable for 400 V DC bus clamping in LLC converters. |
| IF(AV) | 25 A - Continuous average forward current rating defines steady-state conduction capability in boost PFC output stage. |
| trr(typ.) | 25 ns - Typical reverse recovery time at IF = 1 A, dIF/dt = −100 A/µs, VR = 30 V; enables operation above 300 kHz switching frequency. |
| VF(typ.) | 1.6 V - Typical forward voltage at 25 °C, IF = 15 A; directly determines conduction loss (Pcond ≈ IF × VF) in high-current paths. |
| Tj(max.) | 175 °C - Maximum allowable junction temperature ensures long-term reliability under sustained overcurrent or ambient thermal stress. |
| Qrr | 250 nC - Reverse recovery charge at IF = 25 A, dIF/dt = −200 A/µs, VR = 400 V; quantifies turn-off energy dissipation in snubberless designs. |
| Rth(j-c) | 0.5 °C/W - Junction-to-case thermal resistance for DPAK package; enables direct heatsink mounting with predictable thermal rise (ΔT = P × 0.5). |
Pinout & Package
DPAK (TO-252) surface-mount package with three terminals: Anode (pin 1), Cathode (pin 2), and exposed thermal pad (pin 3, electrically connected to cathode). Designed for high-power density PCB layouts with low-inductance routing and direct thermal coupling to copper pour.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (Pin 1) | Forward current entry point | Connected to input side of boost inductor or LLC primary node; must withstand full surge current (170 A, 10 ms). |
| Cathode (Pin 2) | Forward current exit / reverse blocking terminal | Connected to output rail or clamp node; carries full load current and blocks 600 V reverse bias during off-state. |
| Thermal Pad (Pin 3) | Thermal conduction path | Electrically tied to cathode; requires minimum 6.7 mm × 6.7 mm copper area for optimal Rth(j-a) ≤ 35 °C/W on FR4 board. |
Key Features
| Feature | Design Value |
|---|---|
| Ultrafast soft recovery | SFACTOR >0.4 at dIF/dt = 200 A/µs ensures low-voltage ringing and reduced EMI in high-dV/dt LLC clamp applications. |
| High junction temperature rating | 175 °C max operating temperature allows uninterrupted operation in enclosed telecom power modules with ambient >85 °C. |
| Low leakage current | ≤800 µA at 125 °C, VR = 600 V minimizes standby power loss in always-on PFC front-ends. |
| High surge capability | 170 A non-repetitive peak forward current (10 ms sine) supports cold-start inrush and transient overload conditions. |
| ECOPACK2 compliance | Meets RoHS, halogen-free, and lead-free reflow requirements for industrial and telecom equipment environmental certifications. |
Applications
| Telecom AC-DC Power Supply | Variable-Speed Air Conditioner Inverter |
|---|---|
|
Use Scenario: High-efficiency 3.5 kW front-end PFC stage operating at 100 kHz with interleaved boost topology. IC Role / Device Role / Timing Role: Boost diode conducting during switch off-time; clamps inductor flyback energy into bulk capacitor. Use Value: 25 ns trr and soft recovery reduce switching loss by ~35% vs. standard fast diodes, improving system efficiency from 95.2% to 96.1% at full load. |
Use Scenario: LLC resonant converter in outdoor unit inverter driving compressor motor with 400 V DC bus. IC Role / Device Role / Timing Role: Clamping diode across resonant tank, absorbing voltage spikes during zero-voltage switching transitions. Use Value: 600 V VRRM and 175 °C Tj rating ensure safe operation under 450 V bus transients and ambient temperatures up to 70 °C. |
| Industrial UPS Battery Charger | EV Onboard Charger Auxiliary Supply |
|
Use Scenario: Dual-phase active PFC module delivering 2.2 kW with forced-air cooling and 125 °C case temperature. IC Role / Device Role / Timing Role: Output rectifier handling continuous 25 A average current with 170 A surge tolerance during battery equalization cycles. Use Value: 0.5 °C/W Rth(j-c) enables direct heatsink mounting, limiting junction rise to <100 °C at 25 A, ensuring >10-year lifetime. |
Use Scenario: Auxiliary 12 V/20 A supply derived from main DC link in 6.6 kW OBC, operating continuously during vehicle charging. IC Role / Device Role / Timing Role: Secondary-side ultrafast rectifier in forward or flyback auxiliary converter, requiring low VF and high reliability. Use Value: 1.3 V VF at 150 °C reduces conduction loss by 22% vs. legacy 1.7 V diodes, lowering thermal stress on compact PCB layout. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar ultrafast high-voltage rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| IXYS MUR2560CT | 600 V, 25 A dual common-cathode TO-220AB; trr = 35 ns (typ.), VF = 1.85 V (150 °C), Rth(j-c) = 1.5 °C/W | Requires dual-diode configuration for single-anode use; higher VF increases conduction loss in high-duty-cycle PFC | Prefer when dual-output auxiliary supply needed; avoid where thermal budget is tight due to higher Rth(j-c) |
| Vishay VS-25CPH06 | 600 V, 25 A TO-247AC; trr = 45 ns (typ.), VF = 1.75 V (150 °C), Rth(j-c) = 0.45 °C/W, but no soft recovery data published | Larger footprint and higher cost; lacks documented SFACTOR, increasing risk of EMI in LLC clamp | Select only if mechanical constraints require TO-247; verify softness via lab testing before volume deployment |
Compared with MUR2560CT and VS-25CPH06, STTH25M06B-TR offers superior soft recovery (SFACTOR >0.4), lower Rth(j-c) than MUR2560CT, and verified softness data absent in VS-25CPH06-making it the preferred choice for EMI-sensitive, thermally constrained high-frequency PFC and LLC clamp designs.
Availability
STTH25M06B-TR is available at Aetrix Electronics and suitable for telecom AC-DC power supplies, variable-speed air conditioner inverters, and industrial UPS battery chargers requiring stable component supply, consistent parametric performance, and long-term lifecycle support.
Supply support for STTH25M06B-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 automotive, industrial, and consumer markets.
The STTH series targets high-efficiency power conversion systems, with STTH25M06B-TR specifically engineered for ultrafast, soft-recovery operation in resonant and hard-switched PFC and DC-DC topologies demanding low EMI and high thermal resilience.
FAQ
What is the maximum allowable case temperature for STTH25M06B-TR in continuous operation?
The DPAK package has a specified Rth(j-c) of 0.5 °C/W. At 25 A average forward current and 1.6 V forward drop, conduction power is ~40 W. To maintain Tj ≤ 175 °C, the case temperature must not exceed 155 °C (175 − 40 × 0.5). Derating is required above 155 °C case temperature per Figure 1 of DS13169.
Does STTH25M06B-TR support reflow soldering, and what profile is recommended?
Yes, STTH25M06B-TR is qualified for lead-free reflow per JEDEC J-STD-020. The recommended peak temperature is 260 °C for ≤30 seconds, with ramp-up rate ≤3 °C/s and ramp-down rate ≤6 °C/s. Thermal pad must be fully soldered to achieve rated Rth(j-c); voiding >25% degrades thermal performance.
How does the soft recovery characteristic impact EMI in LLC resonant converters?
Soft recovery (SFACTOR >0.4) limits di/dt during turn-off, reducing high-frequency spectral content in voltage transients. In LLC clamp applications, this lowers conducted EMI by 8–12 dB in the 30–100 MHz band compared to standard fast diodes, easing EMC filter design and reducing ferrite core size.
Can STTH25M06B-TR replace STTH25M06FP in the same PCB layout?
No-STTH25M06B-TR uses DPAK (TO-252) while STTH25M06FP uses TO-220FPAC. Their footprints, thermal pad geometry, and mounting holes are incompatible. DPAK requires surface-mount stencil and reflow; TO-220FPAC needs through-hole insertion and screw mounting. Mechanical redesign is mandatory for substitution.
STTH25M06B-TR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Series:
- ECOPACK®2
- Package/Case:
- TO-252-3, DPAK (2 Leads + Tab), SC-63
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Technology:
- Standard
- Voltage - DC Reverse (Vr) (Max):
- 600 V
- Current - Average Rectified (Io):
- 25A
- Voltage - Forward (Vf) (Max) @ If:
- 3.4 V @ 25 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- 50 ns
- Current - Reverse Leakage @ Vr:
- 60 µA @ 600 V
- Capacitance @ Vr, F:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DPAK
- Operating Temperature - Junction:
- 175°C (Max)
STTH25M06B-TR FAQ
1.How can I place an order for STTH25M06B-TR through Aetrix?
Please submit a Request for Quotation (RFQ) for STTH25M06B-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 STTH25M06B-TR reliable?
The price and inventory of STTH25M06B-TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STTH25M06B-TR is usually 5 days.
3.What payment methods are accepted for STTH25M06B-TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STTH25M06B-TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for STTH25M06B-TR?
STTH25M06B-TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your STTH25M06B-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 STTH25M06B-TR?
For technical support, including STTH25M06B-TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STTH25M06B-TR requirements.
6.How does Aetrix verify that STTH25M06B-TR is sourced from the original manufacturer or authorized distributors?
All STTH25M06B-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 STTH25M06B-TR meets industry standards.
7.What is the process for return or replacement of STTH25M06B-TR?
All STTH25M06B-TR units undergo pre-shipment inspection (PSI). If there is an issue with STTH25M06B-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 STTH25M06B-TR part is unused and in its original packaging.
Return procedure for STTH25M06B-TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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