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

Vishay General Semiconductor - Diodes Division BA157GP-M3/54

Name: BA157GP-M3/54
Brand: Vishay General Semiconductor - Diodes Division
SKU: BA157GP-M3/54
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: BA157GP-M3/54

Manufacturer:: Vishay General Semiconductor - Diodes Division

Category:: Single Diodes

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

Datasheet:: BA157GP-M3/54.pdf

Description:: DIODE GEN PURP 400V 1A DO204AL

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Product details

Overview

BA157GP-M3/54 from Vishay General Semiconductor is a glass-passivated junction fast-switching plastic rectifier diode in DO-41 package, rated for 400 V repetitive peak reverse voltage (V_RRM), 1.0 A average forward current (I_F(AV)), and 150 ns reverse recovery time (t_rr). It serves as a single-anode/cathode unidirectional power conversion element in AC/DC front-end and DC-DC flyback snubber circuits.

For engineers reviewing the BA157GP-M3/54 datasheet, BA157GP-M3/54 pinout, BA157GP-M3/54 application, or BA157GP-M3/54 equivalent, key selection criteria include its 1.3 V forward voltage at 1.0 A, 5.0 μA maximum reverse leakage at rated blocking voltage, 20 A non-repetitive surge rating, 175 °C maximum junction temperature, and DO-41 mechanical compatibility with legacy through-hole power supplies.

Technical Context

This device implements a Superectifier® structure-Vishay's proprietary cavity-free glass-passivated junction-to enhance reliability under thermal cycling and humidity stress. Its fast switching (t_rr = 150 ns) and low leakage (I_R ≤ 5.0 μA) support medium-frequency rectification up to ~100 kHz in offline SMPS and auxiliary power rails.

The DO-41 package provides 55 °C/W junction-to-ambient thermal resistance at 0.375" lead length, enabling operation up to 175 °C junction temperature without forced cooling. Polarity is marked by a cathode band; leads are matte tin-plated and solderable per J-STD-002 and JESD 22-B102.

Key Specifications

Parameter	Value and Actual Design Meaning
V_RRM	400 V - supports input rectification from 280 V_RMS AC mains (e.g., universal-input 85–265 VAC supplies)
I_F(AV)	1.0 A - delivers continuous DC output current in low-power adapters and standby converters
t_rr	150 ns - enables efficient operation in 50–100 kHz flyback and forward converters with minimal switching loss
V_F	1.3 V @ 1.0 A - contributes to <1.3 W conduction loss at full load, reducing heatsink requirements
I_R	5.0 μA @ 400 V - ensures low standby power loss in energy-sensitive applications like IoT power supplies
T_J(max)	175 °C - allows sustained operation in high-ambient industrial or enclosed environments
I_FSM	20 A @ 10 ms - withstands inrush surges during cold-start of capacitive-input rectifiers

Pinout & Package

Package: DO-41 (DO-204AL), axial-leaded, molded epoxy over glass body; UL 94 V-0 rated; cathode indicated by color band.

Pin/Terminal	Circuit Role	Design Meaning
Anode (unbanded end)	Forward current entry point	Connected to AC input or transformer secondary; must handle 20 A surge without bond wire fusing
Cathode (banded end)	Forward current exit / reverse blocking terminal	Connected to bulk capacitor or switching node; reverse-biased at up to 400 V during off-cycle

Key Features

Feature	Design Value
Superectifier® structure	Eliminates junction cavity to prevent moisture ingress and metallization corrosion under humid operating conditions
Fast reverse recovery (150 ns)	Reduces turn-off switching loss and EMI generation compared to standard rectifiers (e.g., 1N4007: t_rr > 2 μs)
Glass-passivated junction	Enables stable electrical parameters across 1000+ thermal cycles (-65 °C to +175 °C)
Low I_R (5.0 μA)	Minimizes no-load power dissipation in always-on auxiliary supplies and smart meter standby circuits

Applications

AC/DC Adapter Input Stage	Industrial PLC Power Supply
Use Scenario: Rectifying 115/230 VAC input in compact wall-wart adapters with <10 W output. IC Role / Device Role / Timing Role: Single-phase bridge half-diode; conducts during positive half-cycle, blocks during negative half-cycle. Use Value: 150 ns t_rr limits reverse recovery charge (Q_rr) to ~0.075 μC, reducing MOSFET turn-on loss in quasi-resonant topologies.	Use Scenario: Providing isolated 24 VDC bias for digital I/O modules in factory automation cabinets. IC Role / Device Role / Timing Role: Primary-side rectifier in flyback converter; handles 50–60 Hz line frequency plus 65 kHz switching harmonics. Use Value: 175 °C T_J(max) and 20 A I_FSM ensure robustness against motor drive-induced line transients and ambient temperatures up to 70 °C.
LED Driver Auxiliary Supply	Smart Meter Standby Power
Use Scenario: Generating 12 V bias for gate drivers and controllers in constant-current LED ballasts. IC Role / Device Role / Timing Role: Output rectifier in secondary-side synchronous or diode-based flyback stage. Use Value: 1.3 V V_F at 1.0 A yields only 1.3 W conduction loss, allowing natural convection cooling in sealed enclosures.	Use Scenario: Maintaining real-time clock and communication ICs during main power outage in utility meters. IC Role / Device Role / Timing Role: Low-leakage rectifier in capacitive-dropper or transformer-coupled standby supply. Use Value: 5.0 μA I_R at 400 V blocking minimizes capacitor discharge rate, extending battery backup duration by >15% vs. 1N400x series.

AC/DC Adapter Input Stage

Industrial PLC Power Supply

Use Scenario: Rectifying 115/230 VAC input in compact wall-wart adapters with <10 W output.

IC Role / Device Role / Timing Role: Single-phase bridge half-diode; conducts during positive half-cycle, blocks during negative half-cycle.

Use Value: 150 ns t_rr limits reverse recovery charge (Q_rr) to ~0.075 μC, reducing MOSFET turn-on loss in quasi-resonant topologies.

Use Scenario: Providing isolated 24 VDC bias for digital I/O modules in factory automation cabinets.

IC Role / Device Role / Timing Role: Primary-side rectifier in flyback converter; handles 50–60 Hz line frequency plus 65 kHz switching harmonics.

Use Value: 175 °C T_J(max) and 20 A I_FSM ensure robustness against motor drive-induced line transients and ambient temperatures up to 70 °C.

LED Driver Auxiliary Supply

Smart Meter Standby Power

Use Scenario: Generating 12 V bias for gate drivers and controllers in constant-current LED ballasts.

IC Role / Device Role / Timing Role: Output rectifier in secondary-side synchronous or diode-based flyback stage.

Use Value: 1.3 V V_F at 1.0 A yields only 1.3 W conduction loss, allowing natural convection cooling in sealed enclosures.

Use Scenario: Maintaining real-time clock and communication ICs during main power outage in utility meters.

IC Role / Device Role / Timing Role: Low-leakage rectifier in capacitive-dropper or transformer-coupled standby supply.

Use Value: 5.0 μA I_R at 400 V blocking minimizes capacitor discharge rate, extending battery backup duration by >15% vs. 1N400x series.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
1N4937GP-E3/54	V_RRM = 600 V, t_rr = 200 ns, I_F(AV) = 1.0 A, same DO-41 package	Higher voltage rating suits 380 VDC bus clamping or 230 VAC with margin; slower recovery increases switching loss above 50 kHz	Select when system requires ≥600 V blocking but can tolerate 50 ns longer t_rr.
US1J-E3/54	V_RRM = 600 V, t_rr = 75 ns, I_F(AV) = 1.0 A, same DO-41 package	Ultrafast recovery enables >200 kHz operation; higher cost and tighter V_F tolerance (1.7 V max) impact efficiency at light loads	Select when operating frequency exceeds 100 kHz and lowest possible Q_rr is critical.

Compared with BA157GP-M3/54, 1N4937GP-E3/54 offers higher voltage margin at the cost of slower switching, while US1J-E3/54 delivers superior speed for high-frequency designs but with elevated forward voltage and price-making BA157GP-M3/54 optimal for cost-sensitive 50–100 kHz medium-voltage rectification.

Availability

BA157GP-M3/54 is available at Aetrix Electronics and suitable for AC/DC adapters, industrial PLC power supplies, and LED driver auxiliary circuits requiring stable component supply and long-term manufacturability assurance.

Supply support for BA157GP-M3/54 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

Vishay General Semiconductor is a global leader in discrete semiconductors, specializing in diodes, rectifiers, MOSFETs, and optoelectronics with emphasis on reliability and ruggedized packaging.

The BA157GP-M3/54 belongs to Vishay's Superectifier® fast rectifier family, engineered for medium-frequency AC/DC conversion where low leakage, fast recovery, and thermal resilience are prioritized over ultra-high-speed performance.

FAQ

What is the maximum junction temperature rating for BA157GP-M3/54?

The BA157GP-M3/54 has a maximum junction temperature (T_J(max)) of +175 °C, verified per Vishay's datasheet revision 26-Jan-2022. This rating allows the BA157GP-M3/54 to operate reliably in high-ambient industrial environments without derating below 1.0 A average current up to 75 °C ambient, provided thermal resistance constraints are met.

Is BA157GP-M3/54 suitable for new designs?

No-Vishay explicitly marks BA157GP-M3/54 as "Not for New Designs" in its official documentation (Document Number: 88537). While fully functional and supported for existing production, designers should evaluate modern alternatives like US1J-E3/54 or SF14-E3/54 for new projects requiring extended lifecycle or enhanced efficiency.

What does the "-M3/54" suffix indicate in BA157GP-M3/54?

The "-M3/54" suffix denotes tape-and-reel packaging: "M3" refers to Vishay's internal reel specification (13" diameter, paper tape), and "54" indicates a base quantity of 5500 units per reel. This matches the ordering example BA158GP-E3/54 in the datasheet and confirms standard logistics compatibility with SMT placement equipment equipped for DO-41 axial components.

How does BA157GP-M3/54 compare to standard 1N4007 rectifiers?

BA157GP-M3/54 offers significantly faster switching (150 ns vs. >2 μs), lower leakage (5.0 μA vs. 50 μA), and higher surge rating (20 A vs. 30 A but with different waveform definition). Unlike the 1N4007, BA157GP-M3/54 uses glass passivation for improved humidity resistance-making it more reliable in demanding environments despite both sharing the DO-41 package.

What is the reverse recovery time (t_rr) test condition for BA157GP-M3/54?

The specified t_rr of 150 ns for BA157GP-M3/54 is measured under standardized conditions: I_F = 0.5 A, I_R = 1.0 A, and I_rr = 0.25 A, per JEDEC guidelines. This reflects real-world behavior in flyback and forward converters where the BA157GP-M3/54 transitions from conduction to blocking during each switching cycle.

BA157GP-M3/54 Specifications

Product attributes: Attribute value

Manufacturer:: Vishay General Semiconductor - Diodes Division

Series:: -

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

Packaging:: Tape & Reel (TR)

Product Status:: Obsolete

Technology:: Standard

Voltage - DC Reverse (Vr) (Max):: 400 V

Current - Average Rectified (Io):: 1A

Voltage - Forward (Vf) (Max) @ If:: 1.3 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:: -

Qualification:: -

Mounting Type:: Through Hole

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

Operating Temperature - Junction:: -65°C ~ 175°C

BA157GP-M3/54 FAQ

1.How can I place an order for BA157GP-M3/54 through Aetrix?

Please submit a Request for Quotation (RFQ) for BA157GP-M3/54 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 BA157GP-M3/54 reliable?

The price and inventory of BA157GP-M3/54 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BA157GP-M3/54 is usually 5 days.

3.What payment methods are accepted for BA157GP-M3/54?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BA157GP-M3/54 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for BA157GP-M3/54?

BA157GP-M3/54 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your BA157GP-M3/54 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 BA157GP-M3/54?

For technical support, including BA157GP-M3/54 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BA157GP-M3/54 requirements.

6.How does Aetrix verify that BA157GP-M3/54 is sourced from the original manufacturer or authorized distributors?

All BA157GP-M3/54 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 BA157GP-M3/54 meets industry standards.

7.What is the process for return or replacement of BA157GP-M3/54?

All BA157GP-M3/54 units undergo pre-shipment inspection (PSI). If there is an issue with BA157GP-M3/54, 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 BA157GP-M3/54 part is unused and in its original packaging.

Return procedure for BA157GP-M3/54:

1.Submit a request within 90 days.

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

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