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

STMicroelectronics BYW100-200

Name: BYW100-200
Brand: STMicroelectronics
SKU: BYW100-200
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: BYW100-200

Manufacturer:: STMicroelectronics

Category:: Single Diodes

Package:: DO-204AC, DO-15, Axial

Datasheet:: BYW100-200.pdf

Description:: DIODE GEN PURP 200V 1.5A DO15

Quantity:: RFQ Add To RFQ list

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Inventory:3,316

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Product details

Overview

BYW100-200 from STMicroelectronics is a high-efficiency fast recovery rectifier diode in DO-15 package, designed for switching-mode base drive and transistor circuits. It features 200 V repetitive peak reverse voltage (VRRM), 1.5 A average forward current at 95°C, 0.85 V max forward voltage at 100°C/1.5 A, 35 ns reverse recovery time (trr), and 10 nC reverse recovery charge (Qrr).

For engineers reviewing the BYW100-200 datasheet, BYW100-200 pinout, BYW100-200 application, or BYW100-200 equivalent, key selection criteria include fast trr for reduced switching loss, low VF for conduction efficiency, thermal resistance (Rth(j-a) = 45 °C/W on infinite heatsink), and DO-15 mechanical compatibility in compact SMPS and motor drive designs.

Technical Context

This diode employs optimized silicon process and junction design to achieve low conduction losses (VF ≤ 0.85 V @ 1.5 A, 100°C) and negligible switching losses via fast, soft recovery. Its 35 ns trr and 30 ns tfr are measured under standardized conditions (IF = 1 A, dIF/dt = −50 A/µs, VR = 30 V, Tj = 25°C), enabling reliable operation in high-frequency (<100 kHz) switching converters.

The device supports surge handling up to 50 A (10 ms sinusoidal) and operates up to 150°C junction temperature. Thermal resistance Rth(j-a) = 45 °C/W is specified with 10 mm lead length on infinite heatsink, while Rth(j-l) drops significantly with shorter leads-critical for PCB-level thermal management in space-constrained power stages.

Key Specifications

Parameter	Value and Actual Design Meaning
VRRM	200 V - Withstands repetitive reverse voltage up to 200 V without breakdown, suitable for 110–120 VAC input rectification with safety margin.
IF(AV)	1.5 A @ Ta = 95°C, δ = 0.5 - Sustains continuous average forward current of 1.5 A with 50% duty cycle on standard heatsink.
VF (max)	0.85 V @ Tj = 100°C, IF = 1.5 A - Low conduction loss enables >92% efficiency in low-voltage output stages (e.g., 5 V/3 A SMPS).
trr	35 ns @ IF = 1 A, dIF/dt = −50 A/µs, VR = 30 V, Tj = 25°C - Enables clean turn-off in 50–100 kHz flyback and forward converters, minimizing EMI and snubber loss.
Qrr	10 nC @ IF = 1.5 A, dIF/dt = −20 A/µs, VR ≤ 30 V, Tj = 25°C - Low stored charge reduces reverse recovery current spike and associated switching stress on MOSFETs.
Rth(j-a)	45 °C/W - Junction-to-ambient thermal resistance with 10 mm leads on infinite heatsink; guides PCB copper area and airflow requirements for thermal design.
Tj (max)	+150 °C - Maximum allowable junction temperature supports operation in sealed industrial enclosures without forced cooling.

Pinout & Package

DO-15 axial-leaded package with cathode indicated by white band. Body length 6.05–6.75 mm, diameter 2.95–3.53 mm, lead length ≥26 mm, lead diameter 0.71–0.88 mm. Weight: 0.4 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) in half-wave or full-wave rectifier configurations.
Cathode	Forward current exit / reverse blocking terminal	Marked with white band; connects to output capacitor positive rail; blocks reverse voltage up to 200 V during off-state.

Key Features

Feature	Design Value
Fast recovery time	trr = 35 ns ensures minimal overlap loss in hard-switched topologies, reducing MOSFET switching stress and improving system efficiency.
Low forward voltage	VF ≤ 0.85 V at 100°C/1.5 A lowers conduction loss by ~25% vs. standard FR107, directly improving thermal margin in enclosed power supplies.
Soft recovery characteristic	Controlled dV/dt during turn-off limits EMI generation and eliminates need for RC snubbers in many 50–100 kHz applications.
High surge capability	50 A non-repetitive surge rating (10 ms sine) supports inrush current handling in offline AC-DC adapters without derating.
UL 94 V-0 epoxy encapsulation	Flame-retardant package meets IEC/EN 62368-1 safety requirements for consumer and industrial end equipment.

Applications

AC-DC Adapter Rectification

Switch-Mode Power Supply Output Stage

Use Scenario: Rectifying 115 VAC input in compact wall-plug adapters delivering 5–12 V/2–3 A.

IC Role / Device Role / Timing Role: Primary-side fast recovery rectifier in bridge configuration, operating at 50/60 Hz line frequency with minimal conduction loss.

Use Value: 0.85 V VF at 100°C reduces heat generation by 0.3 W vs. FR107, enabling smaller heatsink or higher power density in UL-certified enclosures.

Use Scenario: Secondary-side synchronous rectifier replacement in 65–100 kHz flyback converters for LED drivers and IoT power modules.

IC Role / Device Role / Timing Role: Fast-recovery freewheeling diode clamping transformer leakage energy and enabling clean output ripple suppression.

Use Value: 35 ns trr and 10 nC Qrr minimize reverse recovery spikes, allowing stable regulation without additional gate-drive complexity of MOSFET-based synchronous rectification.

Motor Drive Base Drive Protection

Industrial DC Link Clamping

Use Scenario: Protecting bipolar transistor base-emitter junctions from reverse voltage transients in H-bridge motor driver ICs.

IC Role / Device Role / Timing Role: Clamp diode across BJT base-collector path, conducting only during fast turn-off transitions to prevent avalanche breakdown.

Use Value: 200 V VRRM and 30 ns tfr ensure robust protection against 100–200 V inductive kickback without delay-induced latch-up.

Use Scenario: Snubberless clamping of DC link voltage overshoot in 24–48 V industrial PLC power rails during relay switching or solenoid de-energization.

IC Role / Device Role / Timing Role: Transient voltage suppressor replacing TVS diodes where repetitive, low-energy clamping is required with minimal leakage.

Use Value: 0.5 mA IR at 100°C ensures <1 µW standby dissipation, avoiding thermal drift issues common with Zener-based clamp networks.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
STTH1L06	VRRM = 600 V, IF(AV) = 1 A, trr = 35 ns, DO-41 package	Higher voltage rating but lower current; requires different PCB footprint and thermal layout	Select when 600 V isolation is mandatory (e.g., 230 VAC inputs); derate average current by 33% vs. BYW100-200.
FR107	VRRM = 1000 V, IF(AV) = 1 A, trr = 500 ns, DO-41 package	Slower recovery increases switching loss >5×; unsuitable for >20 kHz operation	Acceptable only in low-frequency (<10 kHz), low-cost linear supply designs where efficiency and EMI are not critical.

Compared with STTH1L06 and FR107, BYW100-200 delivers optimal balance of 200 V rating, 1.5 A current, and 35 ns speed in DO-15-making it uniquely suited for cost-sensitive, thermally constrained 115 VAC adapter and motor control base-drive applications where FR107 is too slow and STTH1L06 over-specifies voltage.

Availability

BYW100-200 is available at Aetrix Electronics and suitable for AC-DC adapters, switch-mode power supply output stages, motor drive base protection, and industrial DC link clamping requiring stable component supply and long-term obsolescence management.

Supply support for BYW100-200 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

STMicroelectronics is a global semiconductor leader headquartered in Geneva, designing and manufacturing analog, power, microcontroller, and sensor solutions for automotive, industrial, and consumer markets.

BYW100-200 belongs to ST's high-efficiency fast recovery diode product line, engineered specifically for high-frequency switching power conversion where low VF, fast trr, and soft recovery reduce system-level losses and EMI.

FAQ

What is the maximum junction temperature for BYW100-200?

The absolute maximum junction temperature (Tj) is +150 °C, verified per STMicroelectronics' datasheet Section "Absolute Ratings". Operation above this limit risks permanent degradation of the PN junction and accelerated parameter drift. Derating curves in Figure 2 confirm 1.5 A IF(AV) is valid only up to 95°C ambient with δ = 0.5 duty cycle and infinite heatsink.

Is BYW100-200 suitable for surface-mount assembly?

No-BYW100-200 uses a DO-15 axial-leaded through-hole package, not an SMD variant. Its mechanical dimensions (6.05–6.75 mm body length, 2.95–3.53 mm diameter) and 26–31 mm lead length require hole mounting and wave or hand soldering. For SMD alternatives, consider ST's STTH1R06 in SMA package (VRRM = 600 V, IF(AV) = 1 A, trr = 35 ns).

How does BYW100-200 compare to standard 1N4007 in switching applications?

Unlike 1N4007 (trr > 2 µs, VF ≈ 1.1 V @ 1 A), BYW100-200 offers 35 ns trr and 0.85 V VF at 1.5 A/100°C-reducing switching loss by >95% and conduction loss by ~23%. This makes it viable for 50–100 kHz SMPS; 1N4007 is limited to ≤1 kHz linear supplies due to excessive recovery loss and thermal runaway risk.

What is the cathode marking convention for BYW100-200?

The cathode is marked by a single white band on the diode body, consistent with industry-standard DO-15 polarity identification. During PCB layout, the banded end must connect to the higher-potential node (e.g., output capacitor positive rail) to ensure correct forward biasing and reverse blocking functionality.

BYW100-200 Specifications

Product attributes: Attribute value

Manufacturer:: STMicroelectronics

Series:: -

Package/Case:: DO-204AC, DO-15, Axial

Packaging:: Cut Tape (CT)

Product Status:: Obsolete

Technology:: Standard

Voltage - DC Reverse (Vr) (Max):: 200 V

Current - Average Rectified (Io):: 1.5A

Voltage - Forward (Vf) (Max) @ If:: 1.2 V @ 4.5 A

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

Reverse Recovery Time (trr):: 35 ns

Current - Reverse Leakage @ Vr:: 10 µA @ 200 V

Capacitance @ Vr, F:: -

Grade:: -

Qualification:: -

Mounting Type:: Through Hole

Supplier Device Package:: DO-15

Operating Temperature - Junction:: 150°C (Max)

BYW100-200 FAQ

1.How can I place an order for BYW100-200 through Aetrix?

Please submit a Request for Quotation (RFQ) for BYW100-200 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 BYW100-200 reliable?

The price and inventory of BYW100-200 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BYW100-200 is usually 5 days.

3.What payment methods are accepted for BYW100-200?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BYW100-200 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for BYW100-200?

BYW100-200 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your BYW100-200 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 BYW100-200?

For technical support, including BYW100-200 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BYW100-200 requirements.

6.How does Aetrix verify that BYW100-200 is sourced from the original manufacturer or authorized distributors?

All BYW100-200 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 BYW100-200 meets industry standards.

7.What is the process for return or replacement of BYW100-200?

All BYW100-200 units undergo pre-shipment inspection (PSI). If there is an issue with BYW100-200, 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 BYW100-200 part is unused and in its original packaging.

Return procedure for BYW100-200:

1.Submit a request within 90 days.

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

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