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Taiwan Semiconductor Corporation S2QH
- Part No.:
- S2QH
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
S2QH.pdf
- Description:
- 2A, 1200V, STANDARD RECOVERY REC
- Quantity:
- Payment:
- Shipping:
Inventory:6,000
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Product details
Overview
S2QH from Taiwan Semiconductor is a surface-mount silicon rectifier diode with 1200 V repetitive peak reverse voltage (VRRM), 2 A average forward current (IF), and 50 A surge capability (IFSM), designed for freewheeling, snubber, and automotive DC-DC converter applications.
For engineers reviewing the S2QH datasheet, S2QH pinout, S2QH application, or S2QH equivalent, key selection criteria include its DO-214AA (SMB) package, 1.15 V max forward voltage at 2 A, 1500 ns reverse recovery time, AEC-Q101 qualification, and glass-passivated junction for reliability in harsh environments.
Technical Context
The S2QH is a single-die, standard recovery rectifier optimized for moderate-frequency switching (e.g., <100 kHz) in power conversion stages. Its 1500 ns trr and 30 pF junction capacitance reflect trade-offs between low conduction loss and manageable reverse recovery behavior.
Thermally, it features a junction-to-lead resistance of 16 °C/W and junction-to-ambient of 53 °C/W in DO-214AA (SMB), enabling 2 A continuous operation up to 150 °C junction temperature when properly mounted on adequate copper area.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 1200 V - supports input rectification or clamping in 800–1000 V DC bus systems |
| IF | 2 A - rated average forward current under specified thermal conditions |
| IFSM | 50 A - withstands short-duration inrush or fault currents without failure |
| VF (max) | 1.15 V @ 2 A, 25°C - determines conduction loss and thermal load in continuous operation |
| trr | 1500 ns - defines minimum off-time in switching circuits and influences EMI generation |
| TJ max | 150 °C - enables operation in under-hood automotive environments with proper heatsinking |
| CJ | 30 pF @ 1 MHz, 4 V - affects high-frequency switching node ringing and snubber design |
Pinout & Package
Package: DO-214AA (SMB), surface-mount, cathode indicated by band; matte tin-plated leads, moisture sensitivity level 1, UL 94V-0 molding compound.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry point | Connected to lower-potential side of circuit (e.g., switch node or ground return) |
| Cathode | Forward current exit point | Marked with band; connects to higher-potential rail (e.g., output capacitor positive or supply rail) |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing |
| Glass-passivated junction | Enhances long-term stability and moisture resistance versus epoxy-passivated alternatives |
| Low VF (1.15 V max) | Reduces power dissipation by ~0.2 W vs. comparable 1.35 V devices at 2 A, easing thermal design |
| DO-214AA (SMB) footprint | Enables automated placement and reflow compatibility with industry-standard pick-and-place equipment |
| J-STD-020 Level 1 MSL | Allows unlimited floor life before reflow-no baking required prior to assembly |
Applications
| Automotive DC-DC Converters | LED Headlamp Drivers |
|---|---|
Use Scenario: Step-down conversion from 12 V battery to 5–24 V for control modules in passenger vehicles. IC Role / Device Role / Timing Role: Freewheeling diode in synchronous or non-synchronous buck topology. Use Value: 1200 V VRRM provides margin against load dump transients; AEC-Q101 ensures compliance with automotive qualification requirements. | Use Scenario: Constant-current LED driver for adaptive front lighting systems (AFS). IC Role / Device Role / Timing Role: Snubber diode across MOSFET switches to suppress voltage spikes during turn-off. Use Value: 50 A IFSM handles transient energy from inductive kickback; glass passivation improves humidity resistance in sealed headlamp housings. |
| Industrial Power Supplies | Snubber Networks in Motor Drives |
Use Scenario: Auxiliary power supply for PLC I/O modules operating from 24–48 V DC input. IC Role / Device Role / Timing Role: Output rectifier in flyback or forward converter secondary side. Use Value: 2 A IF rating supports typical 1–3 W auxiliary rails; DO-214AA allows compact board layout with proven thermal performance. | Use Scenario: RCD snubber across IGBTs in 3-phase inverter stages for HVAC compressors. IC Role / Device Role / Timing Role: Clamping diode that conducts during voltage spike events. Use Value: 1500 ns trr balances fast enough response to clamp spikes while avoiding excessive switching loss; 1200 V rating covers 600 V bus with 2× safety margin. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STTH2R06 | 600 V VRRM, 2 A IF, 50 ns trr - faster but lower voltage rating | Not suitable for 800+ V bus systems; better for high-frequency SMPS | Select only if system peak reverse voltage ≤600 V and fast recovery is prioritized over voltage margin |
| ON Semi MUR220 | 200 V VRRM, 2 A IF, 75 ns trr - ultrafast, not standard recovery | Lacks AEC-Q101 qualification; unsuitable for automotive under-hood use | Prefer for cost-sensitive industrial supplies where qualification and voltage rating are not critical |
Compared with STTH2R06 and MUR220, the S2QH uniquely combines AEC-Q101 qualification, 1200 V rating, and standard recovery characteristics-making it the only option among the three validated for automotive 1200 V transient-tolerant freewheeling and snubbing.
Availability
S2QH is available at Aetrix Electronics and suitable for automotive DC-DC converters, LED headlamp drivers, and industrial snubber networks requiring stable component supply and long-term manufacturing continuity.
Supply support for S2QH 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
Taiwan Semiconductor Corporation (TSC) is a vertically integrated analog and discrete semiconductor manufacturer headquartered in Hsinchu, Taiwan, specializing in power rectifiers, TVS diodes, and MOSFETs.
The S2QH belongs to TSC's S2xH family of AEC-Q101-qualified surface-mount rectifiers, engineered specifically for automotive and industrial power conversion where robustness, thermal stability, and standardized packaging are essential.
FAQ
What is the maximum repetitive peak reverse voltage (VRRM) for S2QH?
The S2QH has a VRRM of 1200 V, as confirmed in the Absolute Maximum Ratings table of the official Taiwan Semiconductor datasheet (Version A2102). This rating defines the highest instantaneous reverse voltage the device can block repeatedly without breakdown, making S2QH suitable for applications with high-voltage transients such as automotive load dump protection or industrial 800 V DC bus clamping.
Is S2QH qualified for automotive applications?
Yes, S2QH is AEC-Q101 qualified per the manufacturer's documentation. This qualification includes stress testing for temperature cycling, high-temperature reverse bias (HTRB), and mechanical robustness-ensuring reliability in automotive under-hood environments. The S2QH datasheet explicitly lists "AEC-Q101 qualified" under FEATURES, confirming its suitability for automotive DC-DC converters and lighting systems.
What is the forward voltage drop of S2QH at rated current?
The S2QH exhibits a maximum forward voltage (VF) of 1.15 V at 2 A and 25°C junction temperature, per the Electrical Specifications table. This value directly impacts conduction losses and thermal design-e.g., at 2 A, worst-case power dissipation is 2.3 W. The typical VF is lower, but system-level thermal analysis must use the 1.15 V max specification to ensure safe operation across temperature and process variation.
Does S2QH have a defined reverse recovery time (trr)?
Yes, the S2QH has a reverse recovery time (trr) of 1500 ns, measured under IF = 0.5 A, IR = 1.0 A, and Irr = 0.25 A. This parameter is specified in the Electrical Specifications section and reflects its standard recovery behavior-distinct from ultrafast or fast recovery diodes. Designers must account for this trr when selecting gate drive timing margins and snubber components in switching circuits.
What package does S2QH use, and is it compatible with automated assembly?
S2QH uses the DO-214AA (SMB) surface-mount package, with matte tin-plated leads compliant with J-STD-002 solderability standards. Its moisture sensitivity level is J-STD-020 Level 1, meaning it can be stored indefinitely before reflow without baking. These attributes make S2QH fully compatible with high-speed automated placement and standard lead-free reflow profiles used in automotive and industrial PCB assembly lines.
S2QH Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Series:
- -
- Package/Case:
- DO-214AA, SMB
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Technology:
- Standard
- Voltage - DC Reverse (Vr) (Max):
- 1200 V
- Current - Average Rectified (Io):
- 2A
- Voltage - Forward (Vf) (Max) @ If:
- 1.15 V @ 2 A
- Speed:
- Standard Recovery >500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- 1.5 µs
- Current - Reverse Leakage @ Vr:
- 1 µA @ 1200 V
- Capacitance @ Vr, F:
- 30pF @ 4V, 1MHz
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AA (SMB)
- Operating Temperature - Junction:
- -55°C ~ 150°C
S2QH FAQ
1.How can I place an order for S2QH through Aetrix?
Please submit a Request for Quotation (RFQ) for S2QH 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 S2QH reliable?
The price and inventory of S2QH are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for S2QH is usually 5 days.
3.What payment methods are accepted for S2QH?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for S2QH transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for S2QH?
S2QH orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your S2QH 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 S2QH?
For technical support, including S2QH datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your S2QH requirements.
6.How does Aetrix verify that S2QH is sourced from the original manufacturer or authorized distributors?
All S2QH 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 S2QH meets industry standards.
7.What is the process for return or replacement of S2QH?
All S2QH units undergo pre-shipment inspection (PSI). If there is an issue with S2QH, 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 S2QH part is unused and in its original packaging.
Return procedure for S2QH:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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