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Taiwan Semiconductor Corporation S5AH
- Part No.:
- S5AH
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
S5AH.pdf
- Description:
- 5A, 50V, STANDARD RECTIFIER
- Quantity:
- Payment:
- Shipping:
Inventory:6,614
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Product details
Overview
S5AH from Taiwan Semiconductor is a 5A, 50V surface-mount general-purpose rectifier diode in DO-214AB (SMC) package, featuring AEC-Q101 qualification, 1.15V max forward voltage at 5A/25°C, 100A peak surge current, and 150°C maximum junction temperature - deployed in automotive lighting and DC-DC converters.
For engineers reviewing the S5AH datasheet, S5AH pinout, S5AH application, or S5AH equivalent, key selection criteria include repetitive peak reverse voltage (50 V), forward current rating (5 A), thermal resistance (RθJL = 13 °C/W), AEC-Q101 qualification status, and DO-214AB mechanical compatibility for automated placement.
Technical Context
The S5AH is a single-die, glass-passivated silicon rectifier optimized for high-reliability automotive and industrial power conversion. It delivers low conduction loss with ≤1.15 V forward voltage at rated 5 A load and maintains stable reverse blocking up to 50 V VRRM, while supporting 100 A non-repetitive surge current per 8.3 ms half-sine waveform.
Its thermal design enables operation up to +150°C junction temperature, supported by RθJL = 13 °C/W and RθJA = 47 °C/W ratings. The device exhibits 60 pF junction capacitance at 1 MHz/4 V and 1500 ns reverse recovery time under standardized test conditions (IF = 0.5 A, IR = 1.0 A, Irr = 0.25 A).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 50 V - Maximum repetitive reverse voltage the device blocks reliably in circuit |
| IF | 5 A - Continuous average forward current capability at case temperature ≤ 115°C |
| IFSM | 100 A - Peak non-repetitive surge current tolerance for transient protection in power rails |
| VF (max) | 1.15 V @ 5 A, 25°C - Directly impacts conduction loss and thermal rise in rectification stage |
| TJ (max) | +150°C - Enables operation in under-hood automotive environments without derating |
| RθJL | 13 °C/W - Low junction-to-lead thermal resistance supports efficient heat transfer to PCB copper |
| CJ | 60 pF @ 1 MHz, 4 V - Determines high-frequency switching behavior and EMI contribution |
Pinout & Package
Package: DO-214AB (SMC), surface-mount, cathode-indicated by band, matte tin-plated leads, UL 94V-0 molding compound, 0.210 g typical weight.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry terminal during forward conduction | Connected to lower-potential side of AC source or switch node in flyback/freewheeling path |
| Cathode | Current exit terminal during forward conduction; polarity-marked with band | Connected to output rail or higher-potential node; determines unidirectional current flow direction |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing |
| Glass passivated junction | Enhances moisture resistance and long-term stability of reverse leakage performance |
| Low VF (≤1.15 V) | Reduces power dissipation in high-current rectification, lowering heatsink requirements |
| High IFSM (100 A) | Withstands inrush and fault currents in DC-DC input stages without failure |
| Moisture sensitivity level 1 | Enables direct placement without baking, reducing manufacturing overhead |
Applications
| Automotive Lighting | DC-DC Converter Output Rectification |
|---|---|
Use Scenario: LED headlamp and tail lamp power supplies subject to load dump and cold-crank transients. IC Role / Device Role / Timing Role: Primary rectifier converting transformer secondary AC to regulated DC bus. Use Value: AEC-Q101 qualification and 100 A surge rating ensure robustness against automotive electrical disturbances. | Use Scenario: Secondary-side rectification in isolated 12 V → 5 V/3.3 V buck-derived converters. IC Role / Device Role / Timing Role: Freewheeling diode conducting during synchronous switch off-time. Use Value: Low 1.15 V VF minimizes conduction loss and improves efficiency at 5 A continuous load. |
| Snubber Network | Industrial Power Supply Input Stage |
Use Scenario: RC snubber across MOSFETs or relays in motor control inverters. IC Role / Device Role / Timing Role: Clamping diode absorbing inductive kick energy during switching transitions. Use Value: Fast 1500 ns trr and 60 pF CJ enable effective high-frequency energy capture without oscillation. | Use Scenario: Bridge rectification in 24 V industrial SMPS front-end before PFC stage. IC Role / Device Role / Timing Role: General-purpose rectifier handling line-frequency AC input. Use Value: DO-214AB package supports automated assembly and meets UL 94V-0 flammability for safety compliance. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STTH5L06S | 600 V VRRM, 5 A IF, 1.7 V VF (max), TO-277 package | Higher voltage rating but higher forward drop; not AEC-Q101 qualified | Preferred where higher reverse voltage margin is required and automotive qualification is not mandatory |
| MBR540 | 40 V VRRM, 5 A IF, 0.55 V VF (typ), DO-214AC (SMA) package | Lower voltage rating and Schottky construction; no AEC-Q101 qualification | Selected when ultra-low VF is prioritized over surge robustness and automotive compliance |
Compared with STTH5L06S and MBR540, the S5AH uniquely balances 50 V VRRM, AEC-Q101 qualification, and 1.15 V VF in a DO-214AB package - making it optimal for cost-sensitive, thermally constrained automotive rectification where 50–100 V systems dominate.
Availability
S5AH is available at Aetrix Electronics and suitable for automotive lighting, DC-DC converter output rectification, and snubber networks requiring stable component supply across production lifecycles.
Supply support for S5AH 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, serving global automotive, industrial, and consumer markets since 1979.
The S5AH belongs to TSC's AEC-Q101-qualified S5xH rectifier family, engineered specifically for high-reliability surface-mount power conversion in automotive and harsh-environment applications.
FAQ
What is the maximum junction temperature rating for the S5AH?
The S5AH has a maximum junction temperature (TJ) rating of +150°C, verified per absolute maximum ratings in the official Taiwan Semiconductor datasheet (Version A2102). This allows reliable operation in under-hood automotive environments and high-ambient industrial settings. Thermal design must maintain junction temperature below this limit using appropriate PCB copper area and airflow. The S5AH's RθJL of 13 °C/W supports effective heat transfer to the lead frame.
Is the S5AH AEC-Q101 qualified?
Yes, the S5AH is explicitly AEC-Q101 qualified, as confirmed in the "FEATURES" section of the Taiwan Semiconductor datasheet (Version A2102). This qualification covers stress tests including temperature cycling, high-temperature reverse bias (HTRB), and electrostatic discharge (ESD), validating its suitability for automotive electronic systems. The S5AH's qualification applies specifically to the DO-214AB packaged device marked "S5A".
What does the "AH" suffix indicate in S5AH?
The "AH" suffix in S5AH identifies the specific voltage grade within the S5xH family: "A" corresponds to 50 V VRRM, and "H" denotes the DO-214AB (SMC) package variant. This coding is defined in the "ABSOLUTE MAXIMUM RATINGS" table, where S5AH is listed with VRRM = 50 V and marking code "S5A". Other variants like S5BH (100 V) and S5MH (1000 V) follow the same pattern.
What is the reverse recovery time (trr) of the S5AH?
The S5AH has a reverse recovery time (trr) of 1500 ns, measured under standardized conditions: IF = 0.5 A, IR = 1.0 A, and Irr = 0.25 A. This value is specified in the "ELECTRICAL SPECIFICATIONS" table of the Taiwan Semiconductor datasheet (Version A2102). It reflects the diode's speed in transitioning from conduction to blocking state, critical for snubber and high-frequency rectifier applications.
Does the S5AH have a halogen-free construction?
Yes, the S5AH is halogen-free in accordance with IEC 61249-2-21, as stated in the "FEATURES" section of the Taiwan Semiconductor datasheet (Version A2102). Its molding compound contains no brominated or chlorinated flame retardants, meeting environmental compliance requirements for RoHS and WEEE directives. This specification applies to the full S5xH family, including the S5AH variant.
S5AH Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Series:
- -
- Package/Case:
- DO-214AB, SMC
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Technology:
- Standard
- Voltage - DC Reverse (Vr) (Max):
- 50 V
- Current - Average Rectified (Io):
- 5A
- Voltage - Forward (Vf) (Max) @ If:
- 1.15 V @ 5 A
- Speed:
- Standard Recovery >500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- 1.5 µs
- Current - Reverse Leakage @ Vr:
- 10 µA @ 50 V
- Capacitance @ Vr, F:
- 60pF @ 4V, 1MHz
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AB (SMC)
- Operating Temperature - Junction:
- -55°C ~ 150°C
S5AH FAQ
1.How can I place an order for S5AH through Aetrix?
Please submit a Request for Quotation (RFQ) for S5AH 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 S5AH reliable?
The price and inventory of S5AH are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for S5AH is usually 5 days.
3.What payment methods are accepted for S5AH?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for S5AH transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for S5AH?
S5AH orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your S5AH 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 S5AH?
For technical support, including S5AH datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your S5AH requirements.
6.How does Aetrix verify that S5AH is sourced from the original manufacturer or authorized distributors?
All S5AH 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 S5AH meets industry standards.
7.What is the process for return or replacement of S5AH?
All S5AH units undergo pre-shipment inspection (PSI). If there is an issue with S5AH, 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 S5AH part is unused and in its original packaging.
Return procedure for S5AH:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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