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Home > Products > Discrete Semiconductor Products > Diodes > Rectifiers > Single Diodes

Taiwan Semiconductor Corporation BA159G R1G

Name: BA159G R1G
Brand: Taiwan Semiconductor Corporation
SKU: BA159G R1G
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: BA159G R1G

Manufacturer:: Taiwan Semiconductor Corporation

Category:: Single Diodes

Package:: DO-204AL, DO-41, Axial

Datasheet:: BA159G R1G.pdf

Description:: DIODE GEN PURP 1A DO204AL

Quantity:: RFQ Add To RFQ list

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Inventory:6,393

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Product details

Overview

BA159G from Taiwan Semiconductor is a 1A, 1000V fast recovery rectifier diode in DO-204AL (DO-41) package, featuring 250 ns reverse recovery time, 1.2 V forward voltage at 1 A, and 30 A surge capability - used in high-efficiency DC-DC converters and switching inverters.

For engineers reviewing the BA159G datasheet, BA159G pinout, BA159G application, or BA159G equivalent, key selection criteria include peak reverse voltage rating, thermal resistance (60 °C/W), junction temperature range (–55 to +150 °C), and AEC-Q101 qualification status for automotive-grade reliability.

Technical Context

The BA159G employs a single-die, glass-passivated PN junction optimized for fast recovery (250 ns) and low conduction loss. Its 1000 V V_RRM and 30 A I_FSM support high-voltage transient suppression in switching topologies.

Designed for operation up to 150 °C junction temperature, it delivers stable reverse leakage (<100 µA at 125 °C) and low junction capacitance (15 pF), enabling efficient high-frequency rectification in SMPS and DC-DC stages.

Key Specifications

Parameter	Value and Actual Design Meaning
V_RRM	1000 V - supports input rectification in 800 V AC line or 600 V DC bus systems
I_F	1 A continuous - suitable for medium-power auxiliary rails and bias supplies
t_rr	250 ns - enables operation up to ~200 kHz switching frequency with low switching loss
V_F	1.2 V @ 1 A, 25°C - reduces conduction loss and thermal stress in compact layouts
R_θJA	60 °C/W - requires minimal heatsinking in free-air PCB mounting
I_FSM	30 A @ 8.3 ms - withstands inrush and fault currents in industrial power supplies
Junction temp	–55 to +150 °C - qualified for under-hood automotive and industrial ambient conditions

Pinout & Package

Package: DO-204AL (DO-41), axial leaded, glass-passivated, cathode indicated by band. Weight: 0.330 g.

Pin/Terminal	Circuit Role	Design Meaning
Anode	Current entry point during forward conduction	Connected to lower-potential side (e.g., transformer secondary center-tap or switch node)
Cathode	Current exit point during forward conduction; polarity marker via band	Connected to output rail or filter capacitor positive terminal; defines unidirectional current path

Key Features

Feature	Design Value
Fast recovery (250 ns)	Reduces switching losses and EMI generation in high-frequency SMPS designs
Glass passivated junction	Enhances moisture resistance and long-term reliability in humid or thermally cycled environments
AEC-Q101 qualified option (BA159GH)	Validated for automotive powertrain and body electronics applications requiring stress-tested components
RoHS & halogen-free	Complies with IEC 61249-2-21 and global environmental directives for end-product compliance

Applications

Automotive DC-DC Converters	Industrial Switching Inverters
Use Scenario: Step-down conversion of 48 V battery supply to 12 V/5 V rails in ADAS ECUs. IC Role / Device Role / Timing Role: Output rectifier in synchronous or quasi-resonant flyback topology. Use Value: 1000 V V_RRM provides margin against load dump transients; 250 ns t_rr minimizes dead-time losses.	Use Scenario: DC link rectification in motor drive inverters feeding 3-phase induction motors. IC Role / Device Role / Timing Role: Freewheeling and input rectification diode in IGBT gate driver auxiliary supplies. Use Value: 30 A I_FSM handles startup surges; 150 °C max junction temperature ensures stability in enclosed enclosures.
Telecom Power Supplies	Renewable Energy Charge Controllers
Use Scenario: Secondary-side rectification in isolated 48 V telecom brick PSUs with >90% efficiency targets. IC Role / Device Role / Timing Role: High-frequency output rectifier in active clamp forward converter. Use Value: 1.2 V V_F lowers conduction loss; 15 pF C_J limits capacitive coupling noise in sensitive analog sections.	Use Scenario: PV array string-level rectification before MPPT stage in solar charge controllers. IC Role / Device Role / Timing Role: Blocking diode preventing reverse current flow from battery to panel at night. Use Value: <100 µA IR at 125 °C ensures minimal leakage loss in hot rooftop installations.

Automotive DC-DC Converters

Industrial Switching Inverters

Use Scenario: Step-down conversion of 48 V battery supply to 12 V/5 V rails in ADAS ECUs.

IC Role / Device Role / Timing Role: Output rectifier in synchronous or quasi-resonant flyback topology.

Use Value: 1000 V V_RRM provides margin against load dump transients; 250 ns t_rr minimizes dead-time losses.

Use Scenario: DC link rectification in motor drive inverters feeding 3-phase induction motors.

IC Role / Device Role / Timing Role: Freewheeling and input rectification diode in IGBT gate driver auxiliary supplies.

Use Value: 30 A I_FSM handles startup surges; 150 °C max junction temperature ensures stability in enclosed enclosures.

Telecom Power Supplies

Renewable Energy Charge Controllers

Use Scenario: Secondary-side rectification in isolated 48 V telecom brick PSUs with >90% efficiency targets.

IC Role / Device Role / Timing Role: High-frequency output rectifier in active clamp forward converter.

Use Value: 1.2 V V_F lowers conduction loss; 15 pF C_J limits capacitive coupling noise in sensitive analog sections.

Use Scenario: PV array string-level rectification before MPPT stage in solar charge controllers.

IC Role / Device Role / Timing Role: Blocking diode preventing reverse current flow from battery to panel at night.

Use Value: <100 µA IR at 125 °C ensures minimal leakage loss in hot rooftop installations.

Equivalent & Alternatives

The following parts are listed as comparable options for similar fast recovery rectifier applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
STTH1R06	600 V V_RRM, 175 ns t_rr, TO-220AC package	Limited to ≤600 V systems; higher thermal mass but requires heatsink	Select when lower V_RRM suffices and board space allows TO-220 footprint
ON Semi MUR110	1000 V V_RRM, 100 ns t_rr, same DO-41 package	Faster recovery but higher V_F (1.3 V) and no AEC-Q101 variant	Choose for ultra-fast switching where 100 ns trr outweighs 0.1 V V_F penalty

Compared with STTH1R06 and MUR110, the BA159G uniquely balances 1000 V rating, 250 ns recovery, DO-41 form factor, and AEC-Q101 availability - making it optimal for space-constrained, automotive-qualified, medium-power rectification.

Availability

BA159G is available at Aetrix Electronics and suitable for automotive DC-DC converters, industrial switching inverters, and telecom power supplies requiring stable component supply across extended production cycles.

Supply support for BA159G 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 industrial, automotive, and consumer markets since 1979.

The BA159G belongs to TSC's BA15xG fast recovery rectifier family, engineered for high-reliability, high-voltage rectification in cost-sensitive, thermally demanding power conversion systems.

FAQ

What is the maximum repetitive peak reverse voltage (V_RRM) of the BA159G?

The BA159G has a maximum repetitive peak reverse voltage (V_RRM) of 1000 V, as specified in the absolute maximum ratings table. This rating is confirmed across all official Taiwan Semiconductor documentation for the BA159G variant and distinguishes it from the BA157G (400 V) and BA158G (600 V). The 1000 V rating enables use in high-input-voltage SMPS and industrial rectifier applications where robust voltage margin is required.

Is the BA159G AEC-Q101 qualified?

The standard BA159G is not AEC-Q101 qualified; however, the variant BA159GH is explicitly qualified per AEC-Q101. Per Taiwan Semiconductor's ordering information, the "H" suffix denotes AEC-Q101 qualification. Engineers requiring automotive-grade reliability must specify BA159GH - the BA159G itself meets industrial specifications only and lacks the stress-test validation required for automotive powertrain or safety-critical modules.

What is the reverse recovery time (t_rr) of the BA159G, and how does it compare to BA157G/BA158G?

The BA159G has a reverse recovery time (t_rr) of 250 ns under IF = 0.5 A, IR = 1.0 A, and Irr = 0.25 A test conditions. This is higher than the BA157G (150 ns) and BA158G (150 ns), reflecting its optimization for higher voltage blocking rather than ultra-fast switching. The trade-off supports stable operation at 1000 V while maintaining acceptable dynamic performance in typical 50–200 kHz power converters.

What package type does the BA159G use, and what are its mechanical identifiers?

The BA159G uses the DO-204AL (DO-41) axial-leaded package, with cathode polarity marked by a visible band on the body. Mechanical data confirm pure tin-plated leads compliant with J-STD-002 solderability, UL 94V-0 molding compound, and JESD 201 Class 2 whisker resistance. The device weighs approximately 0.330 g and is compatible with standard through-hole reflow or wave soldering processes.

Does the BA159G have a halogen-free and RoHS-compliant construction?

Yes, the BA159G is both RoHS compliant and halogen-free per IEC 61249-2-21. Taiwan Semiconductor explicitly states this in the features section and mechanical data, confirming that the molding compound contains no brominated flame retardants or chlorine-based additives. This makes the BA159G suitable for environmentally regulated end equipment including EU CE-marked industrial and telecom systems.

BA159G R1G Specifications

Product attributes: Attribute value

Manufacturer:: Taiwan Semiconductor Corporation

Series:: -

Package/Case:: DO-204AL, DO-41, Axial

Packaging:: Tape & Reel (TR)

Product Status:: Discontinued at Digi-Key

Technology:: Standard

Voltage - DC Reverse (Vr) (Max):: 1000 V

Current - Average Rectified (Io):: 1A

Voltage - Forward (Vf) (Max) @ If:: 1.2 V @ 1 A

Speed:: Fast Recovery =< 500ns, > 200mA (Io)

Reverse Recovery Time (trr):: 250 ns

Current - Reverse Leakage @ Vr:: 5 µA @ 1000 V

Capacitance @ Vr, F:: 15pF @ 4V, 1MHz

Grade:: -

Qualification:: -

Mounting Type:: Through Hole

Supplier Device Package:: DO-204AL (DO-41)

Operating Temperature - Junction:: -55°C ~ 150°C

BA159G R1G FAQ

1.How can I place an order for BA159G R1G through Aetrix?

Please submit a Request for Quotation (RFQ) for BA159G R1G 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 BA159G R1G reliable?

The price and inventory of BA159G R1G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BA159G R1G is usually 5 days.

3.What payment methods are accepted for BA159G R1G?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BA159G R1G transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for BA159G R1G?

BA159G R1G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your BA159G R1G 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 BA159G R1G?

For technical support, including BA159G R1G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BA159G R1G requirements.

6.How does Aetrix verify that BA159G R1G is sourced from the original manufacturer or authorized distributors?

All BA159G R1G 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 BA159G R1G meets industry standards.

7.What is the process for return or replacement of BA159G R1G?

All BA159G R1G units undergo pre-shipment inspection (PSI). If there is an issue with BA159G R1G, 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 BA159G R1G part is unused and in its original packaging.

Return procedure for BA159G R1G:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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