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Taiwan Semiconductor Corporation BA157GHB0G
- Part No.:
- BA157GHB0G
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Diodes
- Package:
- DO-204AL, DO-41, Axial
- Datasheet:
-
BA157GHB0G.pdf
- Description:
- DIODE GEN PURP 400V 1A DO204AL
- Quantity:
- Payment:
- Shipping:
Inventory:7,275
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Product details
Overview
BA157GHB0G from Taiwan Semiconductor is a 1A, 400V fast recovery rectifier diode in DO-204AL (DO-41) package, featuring 150 ns reverse recovery time, 1.2 V max forward voltage at 1 A, and AEC-Q101 qualification for automotive-grade reliability. It serves as a primary AC/DC or DC/DC output rectifier in compact power supplies.
For engineers reviewing the BA157GHB0G datasheet, BA157GHB0G pinout, BA157GHB0G application, or BA157GHB0G equivalent, key selection criteria include its 400 V repetitive peak reverse voltage, 30 A surge capability, glass-passivated junction, RoHS/halogen-free compliance, and suitability for high-efficiency switching converters requiring fast recovery and low conduction loss.
Technical Context
This device is a single-die, unidirectional silicon rectifier optimized for high-frequency switching applications. Its fast recovery (trr ≤ 150 ns) and low VF (≤1.2 V @ 1 A) reduce switching losses and thermal stress in SMPS and inverters.
The DO-204AL package supports lead-free soldering per J-STD-002, meets UL 94V-0 flammability, and features cathode-band polarity marking. Junction-to-ambient thermal resistance is 60°C/W, enabling reliable operation up to 150°C junction temperature.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 400 V - Maximum repetitive reverse blocking voltage; defines safe operating range in rectification circuits |
| IF | 1 A continuous - Rated average forward current; determines steady-state power handling capacity |
| IFSM | 30 A - Non-repetitive surge current rating; supports inrush and transient overload conditions |
| trr | 150 ns - Reverse recovery time; enables efficient operation at switching frequencies up to ~500 kHz |
| VF (max) | 1.2 V @ 1 A, 25°C - Forward voltage drop; directly impacts conduction loss and thermal design |
| TJ max | 150°C - Maximum junction temperature; sets thermal derating limits for PCB layout and heatsinking |
| IR (max) | 5 µA @ 25°C - Reverse leakage current; critical for low-power standby and high-impedance bias networks |
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 | Forward current entry point | Connected to lower-potential side (e.g., transformer secondary center-tap or switch node) |
| Cathode | Forward current exit point | Connected to output rail or filter capacitor; marked with band for polarity identification |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive underhood applications including temperature cycling, HTRB, and ESD stress |
| Glass passivated junction | Enhances moisture resistance and long-term reliability in humid or contaminated environments |
| Low VF (≤1.2 V) | Reduces conduction loss by ~15% vs. standard recovery diodes, improving efficiency in 5–24 V output converters |
| Fast trr (≤150 ns) | Minimizes reverse recovery charge (Qrr), lowering EMI and reducing snubber requirements |
| RoHS & halogen-free | Complies with IEC 61249-2-21; supports environmentally regulated industrial and automotive production |
Applications
| AC/DC Adapter Output Rectification | Automotive DC/DC Converter |
|---|---|
Use Scenario: 12 V output stage of wall-mounted AC/DC adapter for consumer electronics. IC Role / Device Role / Timing Role: Primary output rectifier converting high-frequency transformer secondary AC to regulated DC. Use Value: Low VF and fast trr minimize heat generation and improve light-load efficiency over legacy 1N4007 designs. | Use Scenario: 5 V auxiliary supply in vehicle infotainment head unit powered from 12 V battery. IC Role / Device Role / Timing Role: Secondary-side rectifier in isolated flyback converter meeting AEC-Q101 stress requirements. Use Value: AEC-Q101 qualification and 150°C TJ rating ensure functional safety compliance without derating. |
| Industrial SMPS Input Stage | LED Driver Secondary Rectification |
Use Scenario: Input rectification in 24 V, 50 W industrial control power supply operating at 65 kHz. IC Role / Device Role / Timing Role: Fast recovery rectifier replacing slower general-purpose diodes to reduce switching losses. Use Value: 150 ns trr suppresses reverse recovery spikes, easing EMI filter design and improving EMC margin. | Use Scenario: Output rectification in constant-current LED driver for street lighting. IC Role / Device Role / Timing Role: High-reliability rectifier delivering stable DC to LED string with minimal thermal drift. Use Value: Glass passivation and 60°C/W RθJA enable stable operation in sealed, thermally constrained enclosures. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar fast recovery rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STTH1R04 | Same 1 A / 400 V rating; trr = 35 ns (faster), VF = 1.3 V (higher), TO-220AC package | Requires heatsink for >0.5 A continuous; unsuitable for space-constrained DO-41 layouts | Select when ultra-fast recovery is prioritized over board space and thermal simplicity |
| ON Semi MUR120 | 1 A / 200 V rating; trr = 75 ns; VF = 1.0 V; same DO-41 package | Limited to ≤200 V reverse applications; not suitable for 400 V bus designs | Select only for lower-voltage systems where reduced VF outweighs voltage margin requirement |
Compared with STTH1R04 and MUR120, BA157GHB0G uniquely balances 400 V blocking, 150 ns recovery, DO-41 footprint, and AEC-Q101 qualification-making it optimal for cost-sensitive, space-limited automotive and industrial converters needing validated reliability without thermal overhead.
Availability
BA157GHB0G is available at Aetrix Electronics and suitable for automotive infotainment power supplies, industrial SMPS, and LED driver designs requiring stable component supply, long lifecycle support, and AEC-Q101 compliance.
Supply support for BA157GHB0G 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 industrial, automotive, and consumer markets since 1979.
The BA157GHB0G belongs to TSC's AEC-Q101-qualified fast recovery rectifier family, engineered specifically for high-efficiency, high-reliability switching power conversion in harsh-environment applications.
FAQ
What does the 'H' and 'B0G' suffix indicate in BA157GHB0G?
The 'H' denotes AEC-Q101 qualification, confirming automotive-grade reliability testing. 'B0G' specifies packaging: 'B' = tape-and-reel, '0' = reel size code, 'G' = green compound (halogen-free). BA157GHB0G is therefore the AEC-Q101-compliant, RoHS/halogen-free, tape-and-reel version of the BA157G rectifier.
Is BA157GHB0G pin-compatible with standard DO-41 rectifiers like 1N4007?
Yes-BA157GHB0G uses the DO-204AL (DO-41) package with identical mechanical dimensions and axial lead configuration as 1N4007. However, BA157GHB0G offers faster recovery (150 ns vs. 30 µs) and higher voltage rating (400 V vs. 1000 V), making it a performance upgrade-not a direct drop-in replacement without circuit review.
What is the maximum ambient temperature for continuous operation of BA157GHB0G at 1 A?
At 1 A continuous forward current, BA157GHB0G's junction temperature must stay ≤150°C. With RθJA = 60°C/W and Pd ≈ 1.2 W (VF × IF), max ambient is ~78°C. Derating is required above this; full 1 A load requires forced air or heatsinking beyond 50°C ambient.
Does BA157GHB0G require a heatsink in typical 12 V, 1 A SMPS applications?
In most open-frame 12 V, 1 A flyback or forward converters with natural convection, BA157GHB0G operates within thermal limits without a heatsink due to its low VF (≤1.2 V) and DO-41 package's adequate thermal path. Thermal simulation or IR measurement is recommended for enclosed or high-ambient (>60°C) deployments.
How does the glass passivation in BA157GHB0G improve long-term reliability?
Glass passivation forms a hermetic barrier over the silicon junction, preventing moisture ingress and ion migration that cause parametric drift or premature failure. In BA157GHB0G, this extends operational life in humid, condensing, or chemically aggressive environments-critical for automotive under-hood and outdoor industrial use.
BA157GHB0G Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Series:
- -
- Package/Case:
- DO-204AL, DO-41, Axial
- Packaging:
- Bulk
- Product Status:
- Discontinued at Digi-Key
- Technology:
- Standard
- Voltage - DC Reverse (Vr) (Max):
- 400 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):
- 150 ns
- Current - Reverse Leakage @ Vr:
- 5 µA @ 400 V
- Capacitance @ Vr, F:
- 15pF @ 4V, 1MHz
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Through Hole
- Supplier Device Package:
- DO-204AL (DO-41)
- Operating Temperature - Junction:
- -55°C ~ 150°C
BA157GHB0G FAQ
1.How can I place an order for BA157GHB0G through Aetrix?
Please submit a Request for Quotation (RFQ) for BA157GHB0G 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 BA157GHB0G reliable?
The price and inventory of BA157GHB0G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BA157GHB0G is usually 5 days.
3.What payment methods are accepted for BA157GHB0G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BA157GHB0G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BA157GHB0G?
BA157GHB0G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BA157GHB0G 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 BA157GHB0G?
For technical support, including BA157GHB0G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BA157GHB0G requirements.
6.How does Aetrix verify that BA157GHB0G is sourced from the original manufacturer or authorized distributors?
All BA157GHB0G 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 BA157GHB0G meets industry standards.
7.What is the process for return or replacement of BA157GHB0G?
All BA157GHB0G units undergo pre-shipment inspection (PSI). If there is an issue with BA157GHB0G, 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 BA157GHB0G part is unused and in its original packaging.
Return procedure for BA157GHB0G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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