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Taiwan Semiconductor Corporation HS5AH
- Part No.:
- HS5AH
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
HS5AH.pdf
- Description:
- 50NS, 5A, 50V, HIGH EFFICIENT RE
- Quantity:
- Payment:
- Shipping:
Inventory:4,312
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Product details
Overview
HS5AH from Taiwan Semiconductor is a 5A, 50V AEC-Q101-qualified surface-mount Schottky rectifier in DO-214AB (SMC) package, featuring low forward voltage (1.00 V at 5A, 25°C), 150A peak surge current, and 60°C/W junction-to-ambient thermal resistance. It serves as a freewheeling or snubber diode in automotive DC-DC converters and LED lighting circuits.
For engineers reviewing the HS5AH datasheet, HS5AH pinout, HS5AH application, or HS5AH equivalent, key selection criteria include its 50V repetitive peak reverse voltage, 150°C max junction temperature, moisture sensitivity level 1 rating, RoHS/halogen-free compliance, and suitability for automated SMT assembly.
Technical Context
The HS5AH is a single-die, unidirectional silicon rectifier optimized for high-efficiency switching power supplies. Its glass-passivated junction ensures reliability under thermal cycling, while the matte tin-plated leads meet J-STD-002 solderability and JESD 201 Class 2 whisker resistance requirements.
Designed for operation across -55°C to +150°C junction range, it delivers 10 µA maximum reverse leakage at 25°C and 250 µA at 125°C, with 80 pF junction capacitance at 1 MHz and 4.0 V reverse bias - enabling fast switching in snubber and freewheeling roles where low trr (<50 ns) and minimal stored charge are critical.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| IF (Continuous Forward Current) | 5 A - supports sustained conduction in automotive lighting and DC-DC output stages without derating below 75°C ambient. |
| VRRM (Repetitive Peak Reverse Voltage) | 50 V - defines maximum blocking capability in low-voltage buck converter freewheel paths. |
| VF (Forward Voltage @ 5A, 25°C) | 1.00 V - reduces conduction loss by ~15% vs. comparable 1.15 V diodes, improving efficiency in 12V-system applications. |
| IFSM (Peak Surge Current) | 150 A - withstands inrush and transient overloads typical in automotive load-dump scenarios. |
| RθJA (Junction-to-Ambient Thermal Resistance) | 60 °C/W - enables 2.5 W dissipation at 75°C ambient before reaching 150°C TJ limit on standard 1-in² copper pad. |
| CJ (Junction Capacitance) | 80 pF @ 1 MHz, 4 V - limits high-frequency displacement current in snubber networks and EMI filter design. |
| trr (Reverse Recovery Time) | <50 ns - minimizes switching loss and voltage overshoot during turn-off in 100–500 kHz DC-DC topologies. |
Pinout & Package
Package: DO-214AB (SMC), surface-mount, low-profile plastic case with cathode band polarity marking; weight ≈ 0.210 g; UL 94V-0 rated molding compound; matte tin-plated leads.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (Lead 1) | Current entry terminal | Connected to switch node or inductor output in buck/flyback freewheel paths; requires thermal relief pad for soldering. |
| Cathode (Lead 2) | Current exit terminal | Connected to ground or output rail; cathode band identifies this terminal visually and under AOI inspection. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing - required for under-hood and lighting modules. |
| Glass-passivated junction | Prevents moisture ingress and metallization corrosion, extending lifetime in humid environments like engine compartments. |
| Moisture Sensitivity Level 1 | Zero bake requirement prior to reflow; compatible with standard J-STD-020-compliant SMT lines without dry-pack handling. |
| Low profile DO-214AB package | Height ≤ 2.6 mm enables use in space-constrained automotive modules and LED driver PCBs with tight Z-axis clearance. |
| RoHS & halogen-free compliance | Fulfills IEC 61249-2-21 and EU RoHS Directive 2011/65/EU - essential for global OEM automotive supply chain acceptance. |
Applications
| Automotive DC-DC Converters | LED Headlamp Drivers |
|---|---|
Use Scenario: Step-down conversion from 12 V battery to 5–24 V for control electronics in ADAS ECUs. IC Role / Device Role / Timing Role: Freewheeling diode in synchronous or asynchronous buck regulator output stage. Use Value: 1.00 V VF at 5A reduces power loss by 0.5 W vs. higher-VF alternatives, lowering thermal stress on adjacent MCU and sensor ICs. | Use Scenario: Constant-current regulation for high-brightness LED arrays in adaptive front-lighting systems. IC Role / Device Role / Timing Role: Snubber diode across MOSFET switches to clamp inductive kick and suppress EMI. Use Value: 80 pF CJ and <50 ns trr minimize ringing amplitude and duration, easing EMC filter design and reducing radiated emissions. |
| Start-Stop System Power Modules | Industrial 24 V Power Supplies |
Use Scenario: Energy recovery path during engine cranking and regenerative braking in 12 V start-stop systems. IC Role / Device Role / Timing Role: Reverse-polarity protection and freewheeling element in bidirectional buck-boost converters. Use Value: 150 A IFSM handles repeated 100 A cranking surges without degradation; 150°C TJ rating ensures stability during extended hot-soak conditions. | Use Scenario: Output rectification in industrial DIN-rail-mounted 24 V/5 A AC-DC power supplies. IC Role / Device Role / Timing Role: Primary output rectifier in non-isolated flyback or forward converter secondary side. Use Value: DO-214AB package allows automated placement and reflow compatibility with IPC-A-610 Class 3 standards, supporting high-yield manufacturing. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Vishay VS-5EWH05FN-M3/45 | Same DO-214AB package, 5A/50V rating, but VF = 1.05 V @ 5A and RθJA = 65°C/W. | Lacks AEC-Q101 qualification; not approved for automotive safety-critical modules. | Acceptable for industrial 24 V supplies where qualification is not mandated. |
| ON Semiconductor MUR550EG | Ultrafast recovery (trr ≈ 35 ns), but higher VF = 1.25 V @ 5A and TO-220AC package (not SMT). | Requires through-hole assembly and larger board area; unsuitable for automated SMT lines. | Preferred only when sub-40 ns trr is mandatory and layout permits leaded components. |
Compared with VS-5EWH05FN-M3/45 and MUR550EG, the HS5AH uniquely combines AEC-Q101 compliance, SMT-ready DO-214AB packaging, and balanced VF/trr performance - making it the optimal choice for automotive-grade, high-volume SMT power conversion designs requiring zero rework risk and full supply-chain traceability.
Availability
HS5AH is available at Aetrix Electronics and suitable for automotive DC-DC converters, LED headlamp drivers, and start-stop system power modules requiring stable component supply, long-term lifecycle support, and AEC-Q101-compliant sourcing.
Supply support for HS5AH 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 automotive, industrial, and consumer markets since 1979.
The HS5AH belongs to TSC's HS5xH high-efficiency rectifier product line, engineered specifically for AEC-Q101-compliant automotive power conversion - emphasizing thermal robustness, SMT manufacturability, and consistent parametric performance across temperature and lot variance.
FAQ
What is the maximum junction temperature rating for the HS5AH?
The HS5AH has a maximum junction temperature (TJ MAX) of +150°C, validated per AEC-Q101 stress testing. This rating allows continuous operation in under-hood automotive environments up to 125°C ambient when mounted on a 1-in² copper pad, leveraging its 60°C/W RθJA to maintain safe thermal margins. The HS5AH must not exceed this limit during transient or steady-state conditions.
Is the HS5AH suitable for use in RoHS-compliant and halogen-free designs?
Yes, the HS5AH is fully RoHS compliant and halogen-free per IEC 61249-2-21. Its molding compound, lead finish, and internal construction contain no restricted substances above threshold limits, satisfying global environmental regulations for automotive and industrial electronics. This compliance is documented in TSC's official material declarations for the HS5AH.
Does the HS5AH have a defined pinout or polarity marking?
Yes, the HS5AH uses standard DO-214AB (SMC) polarity: the cathode is marked by a visible band on the body, corresponding to Lead 2. Lead 1 is the anode. This marking is verified per JEDEC outline drawings and is machine-readable in automated optical inspection (AOI) systems used in SMT lines handling the HS5AH.
What is the reverse recovery time (trr) specification for the HS5AH?
The HS5AH has a maximum reverse recovery time (trr) of 50 ns under test conditions of IF = 0.5 A, IR = 1.0 A, and Irr = 0.25 A. This value is confirmed in TSC's A2102 datasheet revision and applies directly to the HS5AH variant - distinguishing it from higher-voltage HS5xH family members that specify up to 75 ns.
Can the HS5AH be used as a direct replacement for the HS5BH in a 100 V design?
No, the HS5AH is rated for 50 V VRRM and is not a direct replacement for the HS5BH (100 V). Substituting the HS5AH in a 100 V circuit risks catastrophic failure due to reverse breakdown. Each HS5xH variant is electrically distinct; only the HS5BH or higher-voltage variants meet 100 V blocking requirements. Always match the exact "x" voltage code in the HS5AH part number to the application's peak reverse voltage.
HS5AH 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 V @ 5 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- 50 ns
- Current - Reverse Leakage @ Vr:
- 10 µA @ 50 V
- Capacitance @ Vr, F:
- 80pF @ 4V, 1MHz
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AB (SMC)
- Operating Temperature - Junction:
- -55°C ~ 150°C
HS5AH FAQ
1.How can I place an order for HS5AH through Aetrix?
Please submit a Request for Quotation (RFQ) for HS5AH 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 HS5AH reliable?
The price and inventory of HS5AH are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for HS5AH is usually 5 days.
3.What payment methods are accepted for HS5AH?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for HS5AH transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for HS5AH?
HS5AH orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your HS5AH 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 HS5AH?
For technical support, including HS5AH datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your HS5AH requirements.
6.How does Aetrix verify that HS5AH is sourced from the original manufacturer or authorized distributors?
All HS5AH 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 HS5AH meets industry standards.
7.What is the process for return or replacement of HS5AH?
All HS5AH units undergo pre-shipment inspection (PSI). If there is an issue with HS5AH, 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 HS5AH part is unused and in its original packaging.
Return procedure for HS5AH:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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