My Inquiry
My Account
Taiwan Semiconductor Corporation SK25AHR3G
- Part No.:
- SK25AHR3G
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
SK25AHR3G.pdf
- Description:
- DIODE SCHOTTKY 50V 2A DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:4,736
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
SK25AHR3G from Taiwan Semiconductor is a 2 A, 50 V Schottky barrier rectifier in DO-214AC (SMA) package, qualified to AEC-Q101, with VF = 0.70 V at 2 A and TJ = 25°C, IR ≤ 0.5 mA at VR = 50 V and TJ = 25°C, and IFSM = 50 A for 8.3 ms surge. It serves as a freewheeling or reverse-battery protection diode in automotive lighting and DC/DC converters.
For engineers reviewing the SK25AHR3G datasheet, SK25AHR3G pinout, SK25AHR3G application, or SK25AHR3G equivalent, this page delivers verified electrical parameters, thermal performance (RθJA = 88°C/W), AEC-Q101 qualification status, moisture sensitivity level (J-STD-020 Level 1), and real-world use context for automotive and industrial power conversion designs.
Technical Context
This Schottky rectifier uses a single-die construction with guard ring over-voltage protection and matte tin-plated leads compliant with J-STD-002 solderability. Its low forward voltage drop enables high efficiency in low-voltage, high-frequency switching applications.
The device operates across a junction temperature range of –55°C to +125°C (rated) or +150°C (with derating), supports 10,000 V/µs dV/dt, and delivers 20 mJ non-repetitive avalanche energy (ERSM) under L = 40 mH conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 50 V - Maximum repetitive reverse voltage; sets safe operating limit in reverse-biased blocking applications |
| IF | 2 A - Continuous average forward current; defines steady-state conduction capability at TA = 25°C |
| VF | 0.70 V @ 2 A, 25°C - Low forward drop reduces conduction loss and improves system efficiency |
| IR | ≤ 0.5 mA @ 50 V, 25°C - Low leakage preserves battery life in reverse-battery protection circuits |
| IFSM | 50 A @ 8.3 ms - Withstands short-duration inrush currents during power-up or fault events |
| RθJA | 88 °C/W - Thermal resistance from junction to ambient; informs heatsinking requirements for 2 A operation |
| TJ max | 125°C (rated), 150°C (derated) - Defines maximum allowable junction temperature for reliability |
Pinout & Package
Package: DO-214AC (SMA), surface-mount, cathode indicated by band, weight ≈ 0.070 g, UL 94V-0 molding compound.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry point | Connected to lower-potential side (e.g., ground or return path) in freewheeling configuration |
| Cathode | Forward current exit point | Marked by band; connects to positive rail or switch node; determines polarity in reverse-battery protection |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing |
| Guard ring structure | Enhances ruggedness against transient overvoltage without external snubbers |
| J-STD-020 Level 1 MSL | Zero floor-life limitation; no baking required before reflow assembly |
| Halogen-free & RoHS | Complies with environmental regulations for automotive and industrial end-equipment |
| High dV/dt capability | 10,000 V/µs rating prevents false turn-on in fast-switching SMPS environments |
Applications
| Automotive LED Lighting | DC/DC Converter Freewheeling |
|---|---|
Use Scenario: Reverse polarity protection and load dump suppression in 12 V automotive LED headlamp modules. IC Role / Device Role / Timing Role: Discrete Schottky rectifier used as reverse-battery protection switch and freewheeling path. Use Value: 0.70 V VF minimizes heat generation in confined lamp housings; AEC-Q101 ensures lifetime reliability under vehicle vibration and thermal cycling. | Use Scenario: Output rectification in synchronous buck converter for infotainment power supply (5 V/2 A). IC Role / Device Role / Timing Role: Freewheeling diode providing low-loss current path during high-side FET off-time. Use Value: 50 A IFSM handles peak inductor current surges; 88°C/W RθJA enables operation without heatsink at 2 A continuous load. |
| Reverse Battery Protection | Industrial 24 V Power Input Stage |
Use Scenario: Preventing damage from accidental reverse connection of 12 V battery in telematics control units. IC Role / Device Role / Timing Role: Series-connected Schottky diode blocking reverse current flow into downstream circuitry. Use Value: 0.5 mA IR at 50 V ensures negligible standby current drain; DO-214AC footprint allows compact PCB layout. | Use Scenario: Input rectification and surge clamping in DIN-rail mounted PLC power interface. IC Role / Device Role / Timing Role: Primary input protection diode handling 24 V nominal input with 40 V transients. Use Value: 20 mJ ERSM absorbs inductive kickback energy; 125°C TJ max supports operation in unventilated enclosures. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Schottky rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SB250-E3/54 (Vishay) | Same 2 A / 50 V rating; VF = 0.72 V @ 2 A; RθJA = 90°C/W; JEDEC DO-214AC package | No AEC-Q101 qualification; rated for commercial/industrial only | Select when automotive qualification is not required and cost sensitivity is higher |
| SS25HE3/57T (Vishay) | 2 A / 50 V; VF = 0.75 V @ 2 A; RθJA = 85°C/W; AEC-Q101 qualified; same DO-214AC footprint | Slightly higher VF increases conduction loss; tighter IR spec (≤ 0.25 mA @ 50 V) | Prefer for ultra-low-leakage needs in battery-critical systems where 0.05 V VF penalty is acceptable |
Compared with SB250-E3/54 and SS25HE3/57T, SK25AHR3G offers balanced trade-offs: AEC-Q101 compliance like SS25HE3/57T but lower VF than both alternatives, making it optimal for thermally constrained automotive power stages requiring robust surge handling and low-loss conduction.
Availability
SK25AHR3G is available at Aetrix Electronics and suitable for automotive LED lighting, DC/DC converter freewheeling, and reverse battery protection requiring stable component supply, long-term lifecycle support, and AEC-Q101-compliant sourcing.
Supply support for SK25AHR3G 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 semiconductor manufacturer specializing in discrete power devices, TVS diodes, and rectifiers for automotive, industrial, and consumer markets.
The SK2xAH series was designed specifically for high-reliability, surface-mount Schottky rectification in automotive power systems-emphasizing low VF, AEC-Q101 qualification, and robust surge immunity in compact DO-214AC packaging.
FAQ
What is the maximum junction temperature rating for SK25AHR3G?
The SK25AHR3G has a rated maximum junction temperature of +125°C and can operate up to +150°C with appropriate derating per the forward current derating curve. This specification enables reliable deployment in under-hood automotive environments where ambient temperatures exceed 85°C, provided thermal design accounts for its 88°C/W junction-to-ambient resistance.
Is SK25AHR3G qualified for automotive applications?
Yes, SK25AHR3G is AEC-Q101 qualified, meaning it has passed stress tests including high-temperature reverse bias, temperature cycling, and mechanical shock specific to automotive discrete semiconductors. This qualification confirms suitability for use in automotive lighting, body control modules, and infotainment power supplies where reliability under vibration and thermal cycling is mandatory.
What does the 'R3G' suffix indicate in SK25AHR3G?
The 'R3G' suffix in SK25AHR3G denotes tape-and-reel packaging (R3) and green (halogen-free) compound (G), per Taiwan Semiconductor's ordering nomenclature. It specifies 7,500 units per reel, RoHS-compliant, and J-STD-020 Level 1 moisture sensitivity-enabling direct placement without baking prior to reflow soldering.
How does SK25AHR3G compare to SK24AHR3G in forward voltage?
SK25AHR3G exhibits VF = 0.70 V at 2 A and 25°C, whereas SK24AHR3G (40 V version) has VF = 0.50 V under identical conditions. The higher VF in SK25AHR3G reflects its optimized 50 V VRRM design, trading slight conduction loss for improved reverse blocking margin-critical in 12 V automotive systems subject to load dump transients exceeding 40 V.
Can SK25AHR3G replace SK25AH in existing designs?
Yes, SK25AHR3G is a direct replacement for SK25AH, sharing identical electrical specifications, DO-214AC package dimensions, pinout, and thermal characteristics. The 'R3G' suffix adds tape-and-reel packaging and halogen-free material compliance but does not alter performance-making it fully compatible for new builds and BOM updates requiring RoHS and green manufacturing compliance.
SK25AHR3G Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Series:
- -
- Package/Case:
- DO-214AC, SMA
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- Technology:
- Schottky
- Voltage - DC Reverse (Vr) (Max):
- 50 V
- Current - Average Rectified (Io):
- 2A
- Voltage - Forward (Vf) (Max) @ If:
- 700 mV @ 2 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- -
- Current - Reverse Leakage @ Vr:
- 500 µA @ 50 V
- Capacitance @ Vr, F:
- -
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AC (SMA)
- Operating Temperature - Junction:
- -55°C ~ 150°C
SK25AHR3G FAQ
1.How can I place an order for SK25AHR3G through Aetrix?
Please submit a Request for Quotation (RFQ) for SK25AHR3G 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 SK25AHR3G reliable?
The price and inventory of SK25AHR3G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SK25AHR3G is usually 5 days.
3.What payment methods are accepted for SK25AHR3G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SK25AHR3G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SK25AHR3G?
SK25AHR3G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SK25AHR3G 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 SK25AHR3G?
For technical support, including SK25AHR3G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SK25AHR3G requirements.
6.How does Aetrix verify that SK25AHR3G is sourced from the original manufacturer or authorized distributors?
All SK25AHR3G 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 SK25AHR3G meets industry standards.
7.What is the process for return or replacement of SK25AHR3G?
All SK25AHR3G units undergo pre-shipment inspection (PSI). If there is an issue with SK25AHR3G, 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 SK25AHR3G part is unused and in its original packaging.
Return procedure for SK25AHR3G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SK25AHR3G Tags
-
1N4448X-TP
Micro Commercial Co
-
1N4148WX-TP
Micro Commercial Co
-
1N4148TR
onsemi
-
MMSD4148T1G
onsemi
-
MMBD914LT3G
onsemi
-
BAS16HT1G
onsemi
-
1N914BWT
onsemi
-
BAS21LT1G
onsemi
-
LL4148
onsemi
-
BAS16LT1G
onsemi
-
MMSD914T1G
onsemi
-
BAV21W-7-F
Diodes Incorporated
Tech Hub
Counterfeit components can hide behind convincing markings and passing basic function tests. This engineering reference covers source traceability, external inspection, X-ray, XRF, electrical testing, …
A practical engineering and sourcing framework covering lifecycle verification, lifetime-buy calculations, replacement qualification, supplier checks and counterfeit-risk controls.
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
