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STMicroelectronics STRVS118X02C
- Part No.:
- STRVS118X02C
- Manufacturer:
- STMicroelectronics
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
STRVS118X02C.pdf
- Description:
- TVS DIODE 85VWM 118VC SMC
- Quantity:
- Payment:
- Shipping:
Inventory:951
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Product details
Overview
STRVS118X02C from STMicroelectronics is a unidirectional repetitive voltage suppressor (TVS) designed for clamping transient overvoltages in power semiconductor protection circuits. It delivers 118 V clamping voltage at 2 A peak pulse current, features 85–95 V breakdown voltage range, 0.2 µA max leakage at 25 °C, and operates up to 150 °C junction temperature in SMC package - deployed in flyback MOSFET gate-drive protection.
For engineers reviewing the STRVS118X02C datasheet, STRVS118X02C pinout, STRVS118X02C application, or STRVS118X02C equivalent, key selection criteria include clamping voltage stability across temperature (25/85/125 °C), low dynamic resistance (1.0 Ω), junction-to-lead thermal resistance (12 °C/W), and compliance with IEC 61000-4-2 level 4 (±15 kV air discharge).
Technical Context
The STRVS118X02C employs an avalanche diode structure optimized for repetitive surge events, not single-event ESD. Its clamping behavior is characterized by defined VCL at IPP = 2 A across three temperatures (25 °C, 85 °C, 125 °C), with voltage temperature coefficient αT = 10.6 × 10−4/°C enabling accurate VBR derating.
Thermal design relies on Rth(j-l) = 12 °C/W (junction-to-leads) and Rth(j-a) = 150 °C/W (junction-to-ambient on recommended PCB layout), supporting sustained operation under frequent surges where junction heating must be managed - critical in auxiliary power supply snubbers and MOSFET clamp networks.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Clamping Voltage VCL | 118 V @ IPP = 2 A, 125 °C - ensures safe MOSFET VDS margin during repetitive flyback spikes |
| Breakdown Voltage VBR | 85–95 V @ IR = 1 mA, 25 °C - sets precise turn-on threshold above circuit stand-off voltage |
| Leakage Current IRM | 0.2 µA @ VRM = 85 V, 25 °C - minimizes standby power loss in high-impedance bias networks |
| Dynamic Resistance Rd | 1.0 Ω - enables sharp, predictable clamping response with minimal voltage overshoot |
| Junction Temp Range | −55 to +150 °C (SMC package) - supports industrial ambient and self-heating in high-frequency switching |
| ESD Robustness | ±15 kV air / ±8 kV contact per IEC 61000-4-2 level 4 - qualifies for front-end interface protection |
| Surge Rating | IEC 61000-4-5 level 4 - withstands line-to-line and line-to-ground surge transients in AC/DC supplies |
Pinout & Package
STRVS118X02C uses the SMC (DO-214AB) surface-mount package: cathode-indicated band, lead-free, UL94 V0 epoxy, polarity-marked, solderable per MIL-STD-750 method 2026. Dimensions: 5.55–6.25 mm (L) × 7.75–8.15 mm (W) × 1.90–2.45 mm (H).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Transient return path | Connected to ground or low-impedance reference; completes clamping loop during overvoltage event |
| Cathode | Protected node connection | Connected to drain/gate of MOSFET or collector of IGBT; absorbs surge energy into ground via anode |
Key Features
| Feature | Design Value |
|---|---|
| Triple-temperature clamping spec | VCL guaranteed at 25 °C, 85 °C, and 125 °C - enables reliable design margining across full operating range |
| Low thermal resistance | Rth(j-l) = 12 °C/W - allows efficient heat transfer to PCB copper, critical for repetitive surge duty |
| High junction temperature rating | 150 °C max Tj - supports continuous operation in thermally constrained auxiliary supplies |
| Controlled voltage tempco | αT = 10.6 × 10−4/°C - permits accurate VBR calculation at elevated junction temperatures |
| Standardized surge compliance | IEC 61000-4-2/4-5 level 4 + MIL-STD-883 HBM 25 kV - meets industrial immunity requirements out-of-box |
Applications
| Power Supply Snubber | MOSFET Gate Protection |
|---|---|
|
Use Scenario: Clamps voltage spikes generated during transformer reset in flyback converters. IC Role / Device Role / Timing Role: Unidirectional TVS placed across primary winding or MOSFET drain-source to limit VDS overshoot. Use Value: 118 V clamping ensures MOSFET remains within 80% of its rated VDSS, preventing cumulative stress failure under 100 kHz+ switching. |
Use Scenario: Protects gate oxide of power MOSFETs from Miller-induced voltage transients during fast switching. IC Role / Device Role / Timing Role: TVS connected between gate and source to clamp dv/dt-induced coupling spikes. Use Value: Sub-µA leakage avoids gate drive current loss; 1.0 Ω Rd ensures sub-10 ns response, limiting gate voltage excursion to < 20 V. |
| IGBT Collector Clamp | Industrial Auxiliary Supply |
|
Use Scenario: Suppresses turn-off overvoltage in IGBT-based motor drives and inverters. IC Role / Device Role / Timing Role: Connected across IGBT collector-emitter to absorb inductive kickback energy. Use Value: 150 °C Tj rating sustains clamping performance during repeated 2 A surges in 10–50 Hz PWM cycles without thermal runaway. |
Use Scenario: Guards low-power auxiliary DC-DC converter outputs against line transients in PLC power modules. IC Role / Device Role / Timing Role: Placed at secondary-side rectifier output to protect downstream LDOs and controllers. Use Value: 0.2 µA leakage preserves no-load efficiency; IEC 61000-4-5 level 4 compliance eliminates need for external filter staging. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar TVS diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMCJ110A | 110 V VBR min, 179 V VCL @ 2.2 A, Rd ≈ 1.2 Ω, Tj max = 175 °C (DO-214AB) | Higher clamping voltage reduces MOSFET safety margin; better suited for 120 VAC input stages | Select when higher stand-off voltage (110 V) is required and 179 V clamping is acceptable for protected device rating |
| P6SMB110A | 110 V VBR min, 177 V VCL @ 2.2 A, Rd ≈ 1.3 Ω, Tj max = 150 °C (SMB) | SMB package has higher Rth(j-a) (185 °C/W); lower surge capability than SMC variant | Choose only if board space constraints prohibit SMC; verify thermal relief pads meet SMB footprint requirements |
Compared with SMCJ110A and P6SMB110A, STRVS118X02C offers tighter clamping (118 V vs ≥177 V), lower dynamic resistance (1.0 Ω), and triple-temperature VCL validation - making it superior for precision MOSFET/IGBT protection where voltage margin and thermal stability are critical.
Availability
STRVS118X02C is available at Aetrix Electronics and suitable for industrial power supplies, motor control modules, and telecom auxiliary converters requiring stable component supply, long-term manufacturability, and repeatable surge performance.
Supply support for STRVS118X02C 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 sensing solutions for industrial, automotive, and consumer markets.
The STRVSX series belongs to ST's dedicated transient protection portfolio, engineered specifically for repetitive overvoltage suppression in power semiconductor circuits - emphasizing thermal robustness, clamping precision, and multi-standard compliance.
FAQ
Is STRVS118X02C bidirectional or unidirectional?
STRVS118X02C is a unidirectional TVS diode, indicated by the cathode band marking and specified clamping behavior only in reverse-bias mode. It conducts during positive transients applied to the cathode relative to anode, and blocks normal forward voltage - confirmed by datasheet Figure 1 and Table 4 parameters.
What is the maximum peak pulse current STRVS118X02C can handle?
The device is characterized at IPP = 2 A for clamping voltage specification (VCL = 118 V), but absolute maximum ratings permit short-duration pulses up to 10 A - validated in Figure 2 showing VCL vs. IPP curves up to 10 A at multiple temperatures.
Does STRVS118X02C meet automotive AEC-Q200 requirements?
No - STRVS118X02C is not AEC-Q200 qualified. The datasheet explicitly states it is not designed for automotive or safety-critical applications, and lists only industrial-grade reliability testing (MIL-STD-883 HBM, IEC 61000-4-x). Automotive use requires explicit qualification noted in ST's product selector or AEC-Q200 certificate.
How does the 10.6 × 10⁻⁴/°C voltage temperature coefficient affect design?
This αT value means VBR increases by ~0.106% per °C rise above 25 °C. For example, at 125 °C junction temperature, VBR rises ~10.6%, shifting from 90 V (typ.) to ~99.5 V - directly impacting stand-off margin and must be included in worst-case VBR calculations per Equation 1 in the datasheet.
STRVS118X02C Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Package/Case:
- DO-214AB, SMC
- Series:
- STRVS
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 85V
- Voltage - Breakdown (Min):
- 95V
- Voltage - Clamping (Max) @ Ipp:
- 118V
- Current - Peak Pulse (10/1000µs):
- 2A (8/20µs)
- Power - Peak Pulse:
- -
- Power Line Protection:
- No
- Applications:
- MOSFET Protection
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SMC
STRVS118X02C FAQ
1.How can I place an order for STRVS118X02C through Aetrix?
Please submit a Request for Quotation (RFQ) for STRVS118X02C 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 STRVS118X02C reliable?
The price and inventory of STRVS118X02C are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STRVS118X02C is usually 5 days.
3.What payment methods are accepted for STRVS118X02C?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STRVS118X02C transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for STRVS118X02C?
STRVS118X02C orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your STRVS118X02C 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 STRVS118X02C?
For technical support, including STRVS118X02C datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STRVS118X02C requirements.
6.How does Aetrix verify that STRVS118X02C is sourced from the original manufacturer or authorized distributors?
All STRVS118X02C 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 STRVS118X02C meets industry standards.
7.What is the process for return or replacement of STRVS118X02C?
All STRVS118X02C units undergo pre-shipment inspection (PSI). If there is an issue with STRVS118X02C, 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 STRVS118X02C part is unused and in its original packaging.
Return procedure for STRVS118X02C:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
STRVS118X02C Tags
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