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Taiwan Semiconductor Corporation TSD3GALH
- Part No.:
- TSD3GALH
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Diodes
- Package:
- DO-221AC, SMA Flat Leads
- Datasheet:
-
TSD3GALH.pdf
- Description:
- 3A, 600V, STANDARD RECOVERY RECT
- Quantity:
- Payment:
- Shipping:
Inventory:28,000
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Product details
Overview
TSD3GALH from Taiwan Semiconductor is a 3A, 400V glass-passivated ESD-hardened rectifier diode in Thin SMA package, featuring 0.96V forward voltage at 3A/25°C, 50A surge rating, and AEC-Q101 qualification for automotive-grade reliability.
For engineers reviewing the TSD3GALH datasheet, TSD3GALH pinout, TSD3GALH application, or TSD3GALH equivalent, key selection criteria include its 400V repetitive peak reverse voltage, 15°C/W junction-to-lead thermal resistance, 8kV HBM ESD rating, and suitability for polarity protection in harsh-environment DC power rails.
Technical Context
This single-die standard recovery rectifier operates with a maximum junction temperature of 175°C and exhibits low leakage (≤1µA at 25°C, ≤6µA at 125°C) under rated reverse voltage. Its glass-passivated junction ensures stable performance across automotive temperature ranges.
The Thin SMA package (JEDEC DO-221AC variation) delivers 70°C/W junction-to-ambient thermal resistance on a 5mm × 5mm Cu pad PCB, supporting high-reliability automated assembly with moisture sensitivity level 1 and JESD201 Class 2 whisker resistance.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 400 V - Maximum repetitive reverse blocking voltage; defines safe operating range in DC bus or input rectification |
| IF | 3 A - Continuous forward current rating; supports steady-state power conversion up to 3A without derating at 25°C |
| IFSM | 50 A - Non-repetitive surge current (8.3ms); handles inrush or fault transients in automotive power supplies |
| VF @ 3A/25°C | 0.96 V max - Low conduction loss; reduces power dissipation and thermal stress in compact layouts |
| RθJL | 15 °C/W - Junction-to-lead thermal resistance; enables direct heat transfer to PCB copper for thermal management |
| ESD Rating | ≥8 kV HBM - Meets AEC-Q101-001 Class H3B; eliminates need for external ESD protection in board-level designs |
Pinout & Package
Thin SMA package (JEDEC DO-221AC variation), surface-mount, cathode-indicated by band. Dimensions: 4.40 × 2.70 × 1.20 mm (L × W × H). Matte tin-plated leads, RoHS/halogen-free compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry point during forward conduction | Connected to lower-potential side (e.g., ground or return path) in polarity protection configurations |
| Cathode | Current exit point during forward conduction; marked by band | Connected to higher-potential side (e.g., supply rail) to block reverse current flow |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive applications including engine control units and body electronics requiring extended temperature cycling and reliability |
| Glass-passivated junction | Prevents moisture ingress and contamination, ensuring long-term parameter stability in humid or chemically aggressive environments |
| Low VF (0.96V @ 3A) | Reduces conduction losses by ~15% vs. typical 1.1V rectifiers, lowering thermal load in space-constrained power modules |
| 8kV HBM ESD immunity | Eliminates need for discrete TVS devices in low-voltage DC input stages, simplifying BOM and layout |
| Moisture Sensitivity Level 1 | Enables unlimited floor life before reflow; no baking required prior to SMT assembly |
Applications
| Automotive Body Control Module (BCM) | Industrial DC Power Input Stage |
|---|---|
Use Scenario: Reverse polarity protection on 12V battery-fed microcontroller power rails in door modules and lighting controllers. IC Role / Device Role / Timing Role: Unidirectional current gate preventing damage from accidental battery reversal during service. Use Value: AEC-Q101 qualification and 175°C TJ max ensure uninterrupted operation under hood temperatures; 8kV ESD withstand prevents latch-up during connector mating. | Use Scenario: Input rectification and reverse blocking in DIN-rail mounted 24V industrial PLC power supplies. IC Role / Device Role / Timing Role: Standard recovery rectifier converting AC input to DC while blocking reverse current during transient faults. Use Value: 50A IFSM handles capacitor inrush surges; 15°C/W RθJL enables thermal coupling to heatsink pads without additional hardware. |
| Consumer Appliance Motor Drive Board | Telecom Remote Radio Unit (RRU) Power Interface |
Use Scenario: Polarity safeguard on brushed DC motor driver inputs exposed to field-service wiring errors. IC Role / Device Role / Timing Role: Fail-safe series diode placed upstream of H-bridge to prevent destructive reverse-current paths. Use Value: Thin SMA footprint minimizes PCB area; halogen-free/RoHS compliance meets global appliance safety standards. | Use Scenario: DC input protection in outdoor-mounted RRUs powered via -48V telecom distribution. IC Role / Device Role / Timing Role: Reverse-blocking element isolating power feed from internal DC-DC converters during hot-swap events. Use Value: 400V VRRM exceeds telecom line surge requirements; 1µA IR at 25°C ensures minimal standby leakage in always-on systems. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STTH3L04S | 400V VRRM, 3A IF, TO-277 package (larger footprint, higher RθJA = 90°C/W) | Requires larger PCB area and additional thermal relief; not AEC-Q101 qualified | Choose when legacy TO-277 footprint compatibility is mandatory and automotive qualification is not required |
| SB340-E3/52T | 40V VRRM, 3A IF, SMA package; Schottky architecture (VF ≈ 0.55V), no reverse recovery | Lower VF but insufficient for 400V blocking; unsuitable for mains-derived or automotive battery inputs | Choose only for low-voltage (<60V) DC-DC front ends where ultra-low VF outweighs voltage limitation |
Compared with STTH3L04S and SB340-E3/52T, the TSD3GALH uniquely combines AEC-Q101 qualification, 400V blocking, Thin SMA footprint, and 8kV ESD immunity-making it the only option validated for automotive polarity protection without layout or reliability trade-offs.
Availability
TSD3GALH is available at Aetrix Electronics and suitable for automotive body electronics, industrial PLC power inputs, and telecom remote radio unit interfaces requiring stable component supply and long-lifecycle support.
Supply support for TSD3GALH 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 TSD3xALH series was developed specifically for high-reliability reverse polarity protection and input rectification in automotive and industrial power systems where ESD robustness, thermal efficiency, and AEC-Q101 compliance are mandatory.
FAQ
What is the maximum junction temperature rating for the TSD3GALH?
The TSD3GALH has a maximum junction temperature (TJ) rating of +175°C, enabling reliable operation in under-hood automotive environments and high-temperature industrial enclosures. This rating is validated per AEC-Q101 stress testing and supported by its 15°C/W junction-to-lead thermal resistance. The TSD3GALH must be thermally anchored to adequate PCB copper to maintain this limit under full 3A load.
Is the TSD3GALH pin-compatible with other Thin SMA rectifiers like the 1N4007?
No, the TSD3GALH is not pin-compatible with legacy 1N4007-style SMA packages. While both use SMA outlines, the TSD3GALH employs the JEDEC DO-221AC variant (Thin SMA) with tighter dimensional tolerances (4.40 × 2.70 mm) versus standard SMA (4.5 × 2.7 mm). Layouts designed for 1N4007 may require minor pad adjustments to ensure solder joint integrity for the TSD3GALH.
Does the TSD3GALH meet automotive qualification standards?
Yes, the TSD3GALH is fully AEC-Q101 qualified per revision D, including stress tests for temperature cycling, humidity bias, and mechanical shock. Its qualification covers the full -40°C to +175°C operating range and validates its use in automotive body control modules, lighting drivers, and infotainment power supplies. The marking code "D3GAL" on the device confirms AEC-Q101 compliance.
What is the reverse leakage current specification for the TSD3GALH at elevated temperature?
At 125°C and rated reverse voltage (400V), the TSD3GALH exhibits a maximum reverse leakage current (IR) of 6 µA, per its electrical specifications table. This low leakage ensures minimal standby power loss in always-on systems such as telematics control units. At 25°C and 400V, IR is guaranteed ≤1 µA, supporting precision power rail monitoring.
Can the TSD3GALH replace Schottky rectifiers in low-VF applications?
No-the TSD3GALH is a standard recovery silicon rectifier (VF ≈ 0.96V @ 3A), not a Schottky. It cannot replace Schottky diodes like SB340 where ultra-low VF (<0.6V) or zero reverse recovery charge is required. However, the TSD3GALH offers superior 400V blocking and AEC-Q101 qualification where Schottky alternatives fail, making it a purpose-built solution for robust polarity protection-not low-loss rectification.
TSD3GALH Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Series:
- -
- Package/Case:
- DO-221AC, SMA Flat Leads
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Technology:
- Standard
- Voltage - DC Reverse (Vr) (Max):
- 400 V
- Current - Average Rectified (Io):
- 3A
- Voltage - Forward (Vf) (Max) @ If:
- 1.1 V @ 3 A
- Speed:
- Standard Recovery >500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- -
- Current - Reverse Leakage @ Vr:
- 1 µA @ 400 V
- Capacitance @ Vr, F:
- 18pF @ 4V, 1MHz
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- Thin SMA
- Operating Temperature - Junction:
- -40°C ~ 175°C
TSD3GALH FAQ
1.How can I place an order for TSD3GALH through Aetrix?
Please submit a Request for Quotation (RFQ) for TSD3GALH 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 TSD3GALH reliable?
The price and inventory of TSD3GALH are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TSD3GALH is usually 5 days.
3.What payment methods are accepted for TSD3GALH?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TSD3GALH transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TSD3GALH?
TSD3GALH orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TSD3GALH 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 TSD3GALH?
For technical support, including TSD3GALH datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TSD3GALH requirements.
6.How does Aetrix verify that TSD3GALH is sourced from the original manufacturer or authorized distributors?
All TSD3GALH 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 TSD3GALH meets industry standards.
7.What is the process for return or replacement of TSD3GALH?
All TSD3GALH units undergo pre-shipment inspection (PSI). If there is an issue with TSD3GALH, 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 TSD3GALH part is unused and in its original packaging.
Return procedure for TSD3GALH:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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