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Taiwan Semiconductor Corporation RS2AAH
- Part No.:
- RS2AAH
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
RS2AAH.pdf
- Description:
- DIODE GEN PURP 50V 1.5A DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:3,181
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Product details
Overview
RS2AAH from Taiwan Semiconductor is a 1.5A, 50V fast recovery surface-mount rectifier diode in DO-214AC (SMA) package, AEC-Q101 qualified for automotive use, with 150 ns reverse recovery time, 1.3 V max forward voltage at 1.5A, and 5 µA max reverse leakage at 25°C - deployed in DC-DC converters and automotive lighting circuits.
For engineers reviewing the RS2AAH datasheet, RS2AAH pinout, RS2AAH application, or RS2AAH equivalent, key selection factors include its 50V VRRM, AEC-Q101 qualification, DO-214AC mechanical compatibility, thermal resistance (RθJL = 18°C/W), and fast recovery performance critical for high-frequency switching efficiency.
Technical Context
The RS2AAH is a single-die, glass-passivated silicon PN junction rectifier optimized for fast recovery (trr = 150 ns) under IF = 0.5A / IR = 1.0A conditions. Its 50V repetitive peak reverse voltage and 50A non-repetitive surge rating support transient-tolerant operation in automotive power rails.
Thermally, it features RθJL = 18°C/W and RθJA = 55°C/W, enabling reliable 1.5A continuous conduction up to +175°C junction temperature. The DO-214AC package provides JESD201 Class 2 whisker resistance and J-STD-020 Level 1 moisture sensitivity.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 50 V - Maximum repetitive reverse blocking voltage; defines safe operating range in 12–24V automotive systems. |
| IF | 1.5 A - Continuous forward current rating; supports medium-power DC-DC output stages without derating below 100°C ambient. |
| trr | 150 ns - Measured at IF = 0.5A, IR = 1.0A, Irr = 0.25A; enables efficient operation up to ~500 kHz switching frequencies. |
| VF (max) | 1.3 V @ 1.5A, 25°C - Forward voltage drop directly impacts conduction loss and thermal load in compact layouts. |
| IR (max) | 5 µA @ 50V, 25°C - Low leakage preserves efficiency in high-impedance snubber and bias networks. |
| RθJL | 18 °C/W - Junction-to-lead thermal resistance; allows direct PCB copper pour heat sinking without external heatsink. |
| Junction Temp | −55°C to +175°C - Full automotive temperature range compliance per AEC-Q101 stress test requirements. |
Pinout & Package
DO-214AC (SMA) surface-mount package: molded plastic body with matte tin-plated leads, cathode indicated by band, polarity-critical for unidirectional conduction. Weight ≈ 0.060 g. Complies with JEDEC DO-214AC variation D and UL 94V-0 flammability.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry point | Connected to lower-potential side (e.g., ground or return path) in rectification; requires low-inductance layout for fast recovery integrity. |
| Cathode | Forward current exit / reverse blocking terminal | Marked by band; ties to positive rail or switch node; must maintain clean isolation from adjacent high-dv/dt traces. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing - required for under-hood and lighting modules. |
| Glass passivated junction | Enhances long-term stability of reverse leakage and breakdown characteristics in humid or chemically aggressive environments. |
| Fast recovery (150 ns) | Reduces switching losses and EMI generation in high-frequency DC-DC topologies versus standard rectifiers (>500 ns). |
| DO-214AC (SMA) package | Industry-standard footprint compatible with automated SMT placement and reflow; supports 7,500 pcs/reel tape-and-reel delivery. |
| J-STD-020 Level 1 moisture sensitivity | Enables unlimited floor life before reflow - eliminates baking requirement and simplifies manufacturing logistics. |
Applications
| DC-DC Converter Output Rectification | Automotive LED Lighting Driver |
|---|---|
Use Scenario: Secondary-side rectification in isolated flyback or forward converters powering infotainment displays or ADAS sensors. IC Role / Device Role / Timing Role: Unidirectional current valve converting transformer AC output to regulated DC; operates at 100–500 kHz switching frequency. Use Value: 150 ns trr minimizes reverse recovery loss and improves efficiency >92% at 1.5A load; DO-214AC fits tight board space constraints. | Use Scenario: Constant-current regulation loop in headlamp or tail lamp modules using buck-derived driver ICs. IC Role / Device Role / Timing Role: Freewheeling diode across inductive LED string; clamps inductive kick during PWM dimming transitions. Use Value: 50V VRRM safely handles 36V battery transients; AEC-Q101 qualification ensures 15-year field reliability in vibration/thermal cycling. |
| Snubber Network Diode | General-Purpose AC/DC Bridge Leg |
Use Scenario: RCD snubber clamp in MOSFET-based SMPS primary side to suppress voltage spikes during turn-off. IC Role / Device Role / Timing Role: Fast-turn-on diode conducting snubber capacitor discharge pulse; demands low trr and low Qrr. Use Value: 150 ns trr and 50A IFSM enable robust energy absorption without oscillation or secondary breakdown. | Use Scenario: Single-leg replacement in discrete full-wave bridge rectifiers for auxiliary 5V/12V supplies in telematics gateways. IC Role / Device Role / Timing Role: Half-wave rectifier in cost-optimized linear or quasi-resonant AC/DC front-end. Use Value: 1.5A IF and 1.3V VF balance conduction loss and thermal rise; RoHS/halogen-free compliance meets EU automotive directives. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar fast recovery rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STTH1L06U (STMicroelectronics) | 600V VRRM, 1.05A IF, 75 ns trr, TO-277 package | Higher voltage rating but lower current; smaller footprint but no AEC-Q101 certification | Preferred where higher VRRM margin or faster trr is needed, but not for automotive-qualified designs. |
| SB150 (ON Semiconductor) | 50V VRRM, 1.5A IF, 250 ns trr, DO-204AL (DO-41) through-hole | Same voltage/current rating but slower recovery and through-hole mounting | Suitable for legacy through-hole designs or cost-sensitive non-automotive applications where 150 ns speed is not critical. |
Compared with STTH1L06U and SB150, the RS2AAH uniquely combines AEC-Q101 qualification, 50V/1.5A rating, 150 ns recovery, and DO-214AC SMT compatibility - making it the only drop-in solution for new automotive SMT power supply designs requiring validated reliability and thermal performance.
Availability
RS2AAH is available at Aetrix Electronics and suitable for automotive lighting, DC-DC converter output stages, and snubber networks requiring stable component supply, AEC-Q101 compliance, and DO-214AC footprint consistency.
Supply support for RS2AAH 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 for industrial and automotive markets.
The RS2AAH belongs to TSC's RS2x series of AEC-Q101-qualified fast recovery rectifiers, designed specifically for high-reliability 12V/24V automotive power conversion where thermal robustness and fast switching are essential.
FAQ
What is the maximum junction temperature rating for RS2AAH?
The RS2AAH has a maximum junction temperature (TJ) of +175°C, verified per AEC-Q101 stress testing protocols. This rating allows continuous operation in under-hood environments where ambient temperatures exceed 105°C, provided thermal design maintains junction temperature within this limit using the specified RθJL = 18°C/W path to PCB copper.
Is RS2AAH pin-compatible with other devices in the RS2x family?
Yes, all RS2x devices including RS2AAH share identical DO-214AC (SMA) package dimensions and anode/cathode pinout. Voltage variants (e.g., RS2BAH, RS2DAH) differ only in VRRM and trr; thus RS2AAH can be substituted in layouts designed for any RS2x part without PCB modification.
Does RS2AAH require moisture preconditioning before reflow soldering?
No, RS2AAH is rated J-STD-020 Level 1 for moisture sensitivity, meaning it has unlimited floor life at ≤30°C/60% RH and requires no baking prior to reflow. This eliminates process steps and reduces risk of popcorning during lead-free reflow profiles.
What is the reverse recovery time test condition for RS2AAH?
The RS2AAH reverse recovery time (trr) is measured at IF = 0.5A, IR = 1.0A, and Irr = 0.25A, per the manufacturer's test circuit in Figure 6 of the datasheet. This standardized condition ensures consistent comparison across fast recovery rectifiers used in switching power supplies.
Can RS2AAH be used in place of a standard 1N4007 rectifier?
RS2AAH is not a direct replacement for 1N4007 due to fundamental differences: RS2AAH is a fast recovery diode (150 ns trr, 50V VRRM, DO-214AC SMT), while 1N4007 is a general-purpose silicon rectifier (30 µs trr, 1000V VRRM, DO-41 through-hole). Substitution is only valid if the application requires fast switching, SMT assembly, and operates ≤50V - otherwise, electrical and mechanical incompatibility exists.
RS2AAH Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Series:
- -
- Package/Case:
- DO-214AC, SMA
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Technology:
- Standard
- Voltage - DC Reverse (Vr) (Max):
- 50 V
- Current - Average Rectified (Io):
- 1.5A
- Voltage - Forward (Vf) (Max) @ If:
- 1.3 V @ 1.5 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- 150 ns
- Current - Reverse Leakage @ Vr:
- 5 µA @ 50 V
- Capacitance @ Vr, F:
- 50pF @ 4V, 1MHz
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AC (SMA)
- Operating Temperature - Junction:
- -55°C ~ 150°C
RS2AAH FAQ
1.How can I place an order for RS2AAH through Aetrix?
Please submit a Request for Quotation (RFQ) for RS2AAH 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 RS2AAH reliable?
The price and inventory of RS2AAH are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for RS2AAH is usually 5 days.
3.What payment methods are accepted for RS2AAH?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for RS2AAH transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for RS2AAH?
RS2AAH orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your RS2AAH 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 RS2AAH?
For technical support, including RS2AAH datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your RS2AAH requirements.
6.How does Aetrix verify that RS2AAH is sourced from the original manufacturer or authorized distributors?
All RS2AAH 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 RS2AAH meets industry standards.
7.What is the process for return or replacement of RS2AAH?
All RS2AAH units undergo pre-shipment inspection (PSI). If there is an issue with RS2AAH, 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 RS2AAH part is unused and in its original packaging.
Return procedure for RS2AAH:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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