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Taiwan Semiconductor Corporation RS2AH
- Part No.:
- RS2AH
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
RS2AH.pdf
- Description:
- 150NS, 2A, 50V, FAST RECOVERY RE
- Quantity:
- Payment:
- Shipping:
Inventory:8,368
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Product details
Overview
RS2AH from Taiwan Semiconductor is a 2 A, 50 V fast recovery surface-mount rectifier in DO-214AA (SMB) package, featuring 150 ns reverse recovery time, 1.3 V max forward voltage at 2 A, and AEC-Q101 qualification for automotive use in DC-DC converters and freewheeling circuits.
For engineers reviewing the RS2AH datasheet, RS2AH pinout, RS2AH application, or RS2AH equivalent, key selection criteria include repetitive peak reverse voltage (50 V), surge current rating (50 A), junction temperature range (–55°C to +175°C), thermal resistance (RθJA = 55°C/W), and RoHS/halogen-free compliance.
Technical Context
The RS2AH is a single-die, glass-passivated silicon PN junction rectifier optimized for fast switching and low conduction loss. Its 150 ns trr and 1.3 V VF at 2 A support high-frequency operation in snubber and freewheeling topologies where diode recovery speed directly impacts system efficiency.
Designed for automated SMT placement, it meets J-STD-020 moisture sensitivity level 1 and JESD201 Class 2 whisker resistance. The DO-214AA (SMB) package provides mechanical robustness and thermal performance with RθJL = 18°C/W to lead.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 50 V - Maximum repetitive reverse blocking voltage; defines safe operating limit in DC-DC output rectification |
| IF | 2 A - Continuous average forward current; sets maximum steady-state power delivery capability |
| IFSM | 50 A - Non-repetitive surge current (8.3 ms half-sine); enables handling of inductive turn-off transients |
| trr | 150 ns - Reverse recovery time; determines switching loss and EMI in high-frequency converters |
| VF | ≤1.3 V @ 2 A - Forward voltage drop; directly impacts conduction loss and thermal design |
| TJ max | +175°C - Maximum junction temperature; allows operation in under-hood automotive environments |
| RθJA | 55°C/W - Junction-to-ambient thermal resistance; informs heatsinking requirements on standard FR-4 PCB |
Pinout & Package
DO-214AA (SMB) surface-mount package with cathode-indicated band; two-terminal device (anode and cathode) in molded plastic body meeting UL 94V-0 flammability rating and matte tin-plated leads solderable per J-STD-002.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry point | Connected to lower-potential side (e.g., switch node in buck converter); polarity must align with circuit topology |
| Cathode | Forward current exit / reverse blocking terminal | Marked by band; connects to higher-potential rail (e.g., output capacitor positive); blocks reverse voltage up to 50 V |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD per stress test conditions |
| Glass passivated junction | Enhances long-term stability and leakage control under humidity and thermal stress vs. epoxy-passivated alternatives |
| Fast recovery (150 ns) | Reduces switching losses in 100–500 kHz DC-DC stages compared to standard recovery rectifiers (>500 ns) |
| Moisture sensitivity level 1 | Enables direct placement without baking; eliminates production delay and moisture-related popcorning risk |
| Halogen-free & RoHS compliant | Meets EU environmental directives and automotive OEM material declarations (IMDS, ELV) |
Applications
| DC-DC Converter Output Rectification | Automotive LED Lighting Driver |
|---|---|
Use Scenario: High-efficiency synchronous or quasi-resonant buck converter in 12 V automotive systems delivering 5–24 V to LED arrays. IC Role / Device Role / Timing Role: Freewheeling rectifier conducting during low-side switch off-time; recovers rapidly to minimize voltage overshoot and ringing. Use Value: 150 ns trr and 1.3 V VF reduce conduction and switching losses, enabling >92% efficiency at 2 A load. | Use Scenario: Constant-current LED driver for headlamps or DRLs where space-constrained SMB footprint is critical. IC Role / Device Role / Timing Role: Output rectifier in flyback or buck-boost topology; handles pulsed current with minimal thermal rise. Use Value: AEC-Q101 qualification and +175°C TJ max ensure reliability in sealed, thermally isolated lamp housings. |
| Snubber Network Diode | Freewheeling in Solenoid/Relay Drivers |
Use Scenario: RCD snubber across MOSFETs in automotive HVAC blower motor controllers operating at 20–100 kHz. IC Role / Device Role / Timing Role: Fast-recovery path for snubber capacitor discharge; must recover before next switching cycle. Use Value: 150 ns trr prevents reverse conduction overlap, maintaining snubber effectiveness and reducing MOSFET stress. | Use Scenario: Freewheeling path for 12 V solenoid valves in transmission control modules. IC Role / Device Role / Timing Role: Provides low-loss current recirculation path when coil drive is interrupted. Use Value: 50 A IFSM safely absorbs inductive energy spikes; DO-214AA mechanical robustness withstands vibration. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar fast recovery rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Vishay VS-2EY50 | Same DO-214AA package, 2 A / 50 V, but trr = 200 ns (vs. RS2AH's 150 ns); VF = 1.35 V max | Slightly higher switching loss in >200 kHz designs; otherwise identical automotive suitability | Acceptable where 50 ns slower recovery is tolerable and Vishay supply chain preference applies |
| ON Semiconductor MUR250 | DO-214AC (SMA) package (smaller footprint), same 2 A / 50 V rating, trr = 100 ns, VF = 1.25 V max | Lower thermal resistance but reduced creepage/clearance; not AEC-Q101 qualified | Preferred for space-constrained non-automotive industrial DC-DC where faster recovery and lower VF outweigh qualification needs |
Compared with VS-2EY50 and MUR250, the RS2AH uniquely combines AEC-Q101 qualification, 150 ns recovery, and DO-214AA mechanical robustness-making it the optimal choice for automotive-grade 2 A rectification where reliability and thermal margin are prioritized over minimal footprint or sub-100 ns speed.
Availability
RS2AH is available at Aetrix Electronics and suitable for automotive lighting, DC-DC converter output stages, and solenoid freewheeling applications requiring stable component supply, AEC-Q101 compliance, and consistent DO-214AA packaging.
Supply support for RS2AH 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 RS2AH belongs to TSC's RS2xH fast recovery rectifier family, engineered specifically for high-reliability automotive power conversion where fast switching, thermal resilience, and AEC-Q101 validation are mandatory.
FAQ
What is the maximum junction temperature rating for the RS2AH?
The RS2AH has a maximum junction temperature (TJ) rating of +175°C, verified per absolute maximum ratings in the official Taiwan Semiconductor datasheet revision B2304. This allows reliable operation in under-hood automotive environments where ambient temperatures exceed 125°C. Derating curves confirm usable current capacity down to –55°C storage and operating extremes. The RS2AH's thermal design supports this rating via RθJA = 55°C/W on standard PCB layouts.
Is the RS2AH AEC-Q101 qualified, and what tests does that cover?
Yes, the RS2AH is explicitly AEC-Q101 qualified per the Taiwan Semiconductor product documentation. This qualification includes stress testing for temperature cycling, high-temperature reverse bias (HTRB), high-temperature storage life (HTSL), and electrostatic discharge (ESD) per human-body model (HBM). The RS2AH's qualification confirms suitability for automotive power electronics where long-term reliability under thermal and electrical stress is required.
What is the reverse recovery time (trr) of the RS2AH, and under what test conditions is it measured?
The RS2AH has a reverse recovery time (trr) of 150 ns, measured under the conditions specified in the Taiwan Semiconductor datasheet: IF = 0.5 A, IR = 1.0 A, Irr = 0.25 A, at TJ = 25°C. This value is confirmed in the "ELECTRICAL SPECIFICATIONS" table on page 2 of revision B2304. The RS2AH's trr is faster than RS2JH (250 ns) and RS2KH (500 ns) in the same family, making it optimal for higher-frequency switching.
Does the RS2AH have a halogen-free and RoHS-compliant construction?
Yes, the RS2AH is both halogen-free and RoHS compliant, as stated in the "FEATURES" section of the Taiwan Semiconductor datasheet (revision B2304). The molding compound contains no brominated or chlorinated flame retardants, and lead content is below 1000 ppm. These attributes meet EU Directive 2011/65/EU and support automotive material declarations such as IMDS and ELV reporting requirements for the RS2AH.
What is the marking code printed on the RS2AH device body?
The RS2AH is marked with "RS2A" on its device body, as confirmed in the "ABSOLUTE MAXIMUM RATINGS" table of the Taiwan Semiconductor datasheet (revision B2304), which lists "Marking code on the device" as RS2A for the RS2AH variant. This 4-character laser marking appears adjacent to the cathode band and is used for visual identification and traceability in automated assembly and field service verification of the RS2AH.
RS2AH 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):
- 50 V
- Current - Average Rectified (Io):
- 2A
- Voltage - Forward (Vf) (Max) @ If:
- 1.3 V @ 2 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-214AA (SMB)
- Operating Temperature - Junction:
- -55°C ~ 150°C
RS2AH FAQ
1.How can I place an order for RS2AH through Aetrix?
Please submit a Request for Quotation (RFQ) for RS2AH 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 RS2AH reliable?
The price and inventory of RS2AH are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for RS2AH is usually 5 days.
3.What payment methods are accepted for RS2AH?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for RS2AH transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for RS2AH?
RS2AH orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your RS2AH 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 RS2AH?
For technical support, including RS2AH datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your RS2AH requirements.
6.How does Aetrix verify that RS2AH is sourced from the original manufacturer or authorized distributors?
All RS2AH 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 RS2AH meets industry standards.
7.What is the process for return or replacement of RS2AH?
All RS2AH units undergo pre-shipment inspection (PSI). If there is an issue with RS2AH, 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 RS2AH part is unused and in its original packaging.
Return procedure for RS2AH:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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