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STMicroelectronics STRVS252X02F
- Part No.:
- STRVS252X02F
- Manufacturer:
- STMicroelectronics
- Category:
- TVS Diodes
- Package:
- DO-201AA, DO-27, Axial
- Datasheet:
-
STRVS252X02F.pdf
- Description:
- TVS DIODE 171VWM 252VC DO201
- Quantity:
- Payment:
- Shipping:
Inventory:1,593
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Product details
Overview
STRVS252X02F from STMicroelectronics is a unidirectional repetitive voltage suppressor (TVS) designed for clamping transient overvoltages in power semiconductor protection circuits. It delivers 252 V clamping voltage at 2 A peak pulse current, 171–210 V breakdown range (25–125 °C), and 6.5 Ω dynamic resistance, housed in DO-201 package with 175 °C max junction temperature. It is used in flyback auxiliary power supply protection where repetitive surges cause thermal stress on MOSFETs.
For engineers reviewing the STRVS252X02F datasheet, STRVS252X02F pinout, STRVS252X02F application, or STRVS252X02F equivalent, this page provides verified clamping behavior across temperature, leakage current vs. Tj curves, thermal resistance data for DO-201 layout, and direct alternatives with documented VCL, IPP, and package differences.
Technical Context
The STRVS252X02F operates as a unidirectional avalanche diode with defined clamping characteristics at 25 °C, 85 °C, and 125 °C - enabling accurate surge protection design under thermal drift. Its 171 V minimum breakdown voltage at 25 °C rises to 210 V at 125 °C per αT = 10.8 × 10−4/°C, ensuring predictable turn-on across operating range.
It supports repetitive surge duty cycles with low leakage (1 µA @ VRM = 171 V, 25 °C) and high thermal robustness: Rth(j-l) = 23 °C/W and Rth(j-a) = 100 °C/W (on recommended PCB pad), allowing sustained operation up to 175 °C junction temperature in DO-201 configuration.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Clamping Voltage VCL | 252 V @ IPP = 2 A, 125 °C - defines maximum voltage seen by protected device during worst-case surge |
| Breakdown Voltage VBR | 171–210 V range (25–125 °C) - ensures reliable avalanche initiation before damage threshold of downstream MOSFET/IGBT |
| Stand-off Voltage VRM | 171 V - maximum continuous reverse voltage without significant leakage, matching typical 170 V DC bus rails |
| Dynamic Resistance Rd | 6.5 Ω - determines voltage rise per unit current beyond VBR, critical for precision clamping linearity |
| Leakage Current IRM | 1 µA @ VRM, 25 °C - negligible standby power loss in high-impedance gate drive or feedback paths |
| Junction Temperature Range | −55 to +175 °C - enables use in high-ambient industrial power supplies without derating |
| ESD Robustness | ±8 kV contact / ±15 kV air per IEC 61000-4-2 Level 4 - qualifies for harsh industrial interface environments |
Pinout & Package
STRVS252X02F uses the DO-201 axial-leaded package with cathode indicated by a band. The device has two terminals: anode and cathode. Thermal performance relies on proper lead-to-PCB copper connection, with Rth(j-l) = 23 °C/W and Rth(j-a) = 100 °C/W (on recommended pad layout).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Connected to ground or low-side reference | Serves as current return path during clamping; must be low-inductance and thermally anchored |
| Cathode | Connected to protected node (e.g., MOSFET drain) | Receives surge energy; polarity marking (band) prevents reverse installation in unidirectional configuration |
Key Features
| Feature | Design Value |
|---|---|
| Clamping voltage specified at three temperatures | Enables accurate worst-case analysis across full operating range without interpolation uncertainty |
| Low dynamic resistance (6.5 Ω) | Minimizes voltage overshoot during fast-rising transients, improving margin for 250 V-rated components |
| 175 °C max junction temperature (DO-201) | Supports continuous operation in enclosed power supplies where ambient exceeds 100 °C |
| 1 µA leakage @ VRM | Prevents false triggering or bias shift in high-impedance gate drive or sensing circuits |
| IEC 61000-4-5 Level 4 compliance | Validates capability to survive 4 kV surge waveforms (1.2/50 µs + 8/20 µs combination) |
Applications
| Switch-Mode Power Supply Flyback Clamp | MOSFET Drain Protection |
|---|---|
Use Scenario: Repetitive voltage spikes generated during transformer reset in discontinuous conduction mode flyback converters. IC Role / Device Role / Timing Role: Unidirectional TVS placed across primary winding or MOSFET drain-source to clamp ringback voltage. Use Value: Limits drain voltage to ≤252 V during 2 A surge events, preventing avalanche failure of 300 V MOSFETs while handling thermal cycling. |
Use Scenario: Overvoltage transients induced by parasitic inductance during high-speed MOSFET switching in motor drives. IC Role / Device Role / Timing Role: Fast-response clamping diode connected between drain and source to absorb L·di/dt energy. Use Value: Clamps within nanoseconds to 252 V, reducing dv/dt stress and eliminating need for snubber RC networks in 170 V bus designs. |
| IGBT Gate Driver Isolation Protection | Industrial Auxiliary Power Rail Clamp |
Use Scenario: ESD and coupling-induced transients on isolated gate driver supply lines feeding high-voltage IGBT half-bridges. IC Role / Device Role / Timing Role: Standoff-rated TVS on secondary-side 15–24 V rail to protect level-shifters and gate buffers. Use Value: Blocks >15 kV air discharge per IEC 61000-4-2 while maintaining <1 µA leakage to avoid loading low-current bias supplies. |
Use Scenario: Voltage surges on 170–200 V auxiliary DC rails powering control logic in industrial PLCs and inverters. IC Role / Device Role / Timing Role: Primary overvoltage clamp on bulk rail input prior to DC-DC conversion stage. Use Value: Sustains repetitive 2 A surges without degradation, enabling long-term reliability in fan-cooled enclosures with ambient up to 85 °C. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar repetitive voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STRVS222X02F | Clamping voltage 222 V @ 2 A; lower VBR (154–189 V); same DO-201 package | Better suited for 200 V nominal rails where tighter clamping margin is required | Select when protecting 250 V-class devices with lower absolute voltage tolerance |
| STRVS280X02F | Clamping voltage 280 V @ 2 A; higher VBR (188–231 V); same DO-201 package | Required for 240 V AC-derived rails with higher peak voltages and reduced risk of nuisance clamping | Select when system peak voltage exceeds 255 V and margin above 252 V is needed |
Compared with STRVS222X02F and STRVS280X02F, STRVS252X02F offers optimal clamping alignment for 170–180 V DC bus systems - balancing surge margin against false-trigger risk in flyback and auxiliary supply topologies.
Availability
STRVS252X02F is available at Aetrix Electronics and suitable for industrial power supply design, MOSFET/IGBT protection circuits, and auxiliary rail surge suppression requiring stable component supply and long-term manufacturability.
Supply support for STRVS252X02F 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 specializing in power management, protection, and automotive-grade analog/mixed-signal ICs, with manufacturing and R&D centers across Europe, Asia, and the Americas.
The STRVSX series was developed specifically for repetitive overvoltage protection in power conversion stages - targeting flyback, resonant, and hard-switched topologies where thermal accumulation from frequent transients degrades conventional TVS lifetime.
FAQ
What is the maximum peak pulse current rating for STRVS252X02F?
The device is rated for 2 A peak pulse current (IPP) per IEC 61000-4-5 waveform conditions, with clamping voltage specified at this level. It is not rated for higher single-pulse currents; exceeding 2 A may cause irreversible parametric shift or thermal runaway due to its 6.5 Ω dynamic resistance and DO-201 thermal limits.
Does STRVS252X02F support bidirectional transient suppression?
No - STRVS252X02F is a unidirectional TVS diode, indicated by cathode band marking and specified clamping only in reverse bias. It does not conduct or clamp in forward direction; for bidirectional protection, a separate series-connected pair or dedicated bidirectional device is required.
How does temperature affect the breakdown voltage of STRVS252X02F?
VBR increases linearly with junction temperature at αT = 10.8 × 10−4/°C: from 171 V at 25 °C to 210 V at 125 °C. This positive TC ensures safe margin expansion at elevated temperatures, avoiding premature clamping in hot-running power stages.
Can STRVS252X02F replace standard P6KE250A in industrial designs?
Yes, but with key distinctions: STRVS252X02F offers tighter clamping (252 V vs. 410 V for P6KE250A at 1.13 A), lower dynamic resistance (6.5 Ω vs. ~30 Ω), and validated repetitive surge endurance - making it superior for high-frequency flyback clamp, though it requires DO-201 board layout rather than DO-15.
STRVS252X02F Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Package/Case:
- DO-201AA, DO-27, Axial
- Series:
- STRVS
- Packaging:
- Tape & Box (TB)
- Product Status:
- Obsolete
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 171V
- Voltage - Breakdown (Min):
- 190V
- Voltage - Clamping (Max) @ Ipp:
- 252V
- Current - Peak Pulse (10/1000µs):
- 2A (8/20µs)
- Power - Peak Pulse:
- -
- Power Line Protection:
- No
- Applications:
- MOSFET Protection
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 175°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- DO-201
STRVS252X02F FAQ
1.How can I place an order for STRVS252X02F through Aetrix?
Please submit a Request for Quotation (RFQ) for STRVS252X02F 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 STRVS252X02F reliable?
The price and inventory of STRVS252X02F are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STRVS252X02F is usually 5 days.
3.What payment methods are accepted for STRVS252X02F?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STRVS252X02F transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for STRVS252X02F?
STRVS252X02F orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your STRVS252X02F 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 STRVS252X02F?
For technical support, including STRVS252X02F datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STRVS252X02F requirements.
6.How does Aetrix verify that STRVS252X02F is sourced from the original manufacturer or authorized distributors?
All STRVS252X02F 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 STRVS252X02F meets industry standards.
7.What is the process for return or replacement of STRVS252X02F?
All STRVS252X02F units undergo pre-shipment inspection (PSI). If there is an issue with STRVS252X02F, 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 STRVS252X02F part is unused and in its original packaging.
Return procedure for STRVS252X02F:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
STRVS252X02F Tags
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Diodes Incorporated
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Diodes Incorporated
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Diodes Incorporated
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Diodes Incorporated
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Diodes Incorporated
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Diodes Incorporated
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Nexperia USA Inc.
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Toshiba Semiconductor and Storage
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Diodes Incorporated
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