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

Taiwan Semiconductor Corporation ES1BAL

Name: ES1BAL
Brand: Taiwan Semiconductor Corporation
SKU: ES1BAL
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: ES1BAL

Manufacturer:: Taiwan Semiconductor Corporation

Category:: Single Diodes

Package:: DO-221AC, SMA Flat Leads

Datasheet:: ES1BAL.pdf

Description:: DIODE GEN PURP 100V 1A THIN SMA

Quantity:: RFQ Add To RFQ list

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Inventory:10,360

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Product details

Overview

ES1BAL from Taiwan Semiconductor is a 1A, 100V super fast surface-mount rectifier diode in a Thin SMA package, featuring 35ns reverse recovery time, 0.85V forward voltage at 1.0A/25°C, and 30A surge current capability. It serves as a freewheeling or output rectifier in high-frequency switching power supplies.

For engineers reviewing the ES1BAL datasheet, ES1BAL pinout, ES1BAL application, or ES1BAL equivalent, key selection criteria include its 100V V_RRM, low thermal resistance (R_θJL = 28°C/W), J-STD-020 Level 1 moisture sensitivity, and compatibility with automated SMT assembly on standard PCB pads.

Technical Context

The ES1BAL is a single-die, unidirectional silicon rectifier optimized for high-speed switching operation. Its super fast recovery (t_rr ≤ 35ns) minimizes switching losses in DC–DC converters and SMPS topologies operating above 50kHz.

Thermal performance is defined with reference to a 5mm × 5mm copper pad test board: R_θJA = 67°C/W, R_θJC = 20°C/W, and R_θJL = 28°C/W. Reverse leakage remains ≤1µA at 25°C and ≤20µA at 125°C under rated V_R.

Key Specifications

Parameter	Value and Actual Design Meaning
V_RRM	100 V - Maximum repetitive reverse voltage before breakdown; sets safe operating limit in 12–48V output rectification
I_F	1 A - Continuous forward current rating; supports compact designs up to ~12W at typical efficiency
t_rr	≤35 ns - Reverse recovery time; enables efficient operation in >100kHz switching converters
V_F	0.85 V @ 1A, 25°C - Low conduction loss; reduces heat generation vs. standard fast rectifiers
I_FSM	30 A @ 8.3ms - Non-repetitive surge rating; withstands inrush and transient overloads
C_J	18 pF @ 1MHz, 4V - Junction capacitance; limits high-frequency displacement current and EMI
T_J max	+150°C - Maximum junction temperature; allows operation in sealed or high-ambient environments

Pinout & Package

Package: Thin SMA (DO-214AC), surface-mount, low-profile plastic case with matte tin-plated leads, polarity indicated by cathode band, weight ≈0.029g.

Pin/Terminal	Circuit Role	Design Meaning
Anode (A)	Forward current entry point	Connected to lower-potential side (e.g., switch node or ground return) in freewheeling path
Cathode (K)	Forward current exit / reverse-blocking terminal	Marked by band; connects to output rail or positive bus; blocks 100V reverse during off-state

Key Features

Feature	Design Value
Glass passivated junction	Enhances long-term reliability and humidity resistance without hermetic sealing
Level 1 moisture sensitivity (J-STD-020)	Enables immediate reflow without baking; simplifies SMT line integration
UL 94V-0 molding compound	Meets flame-retardancy requirements for industrial and consumer end-equipment
RoHS & halogen-free compliance	Supports environmental compliance in EU, China RoHS, and JEITA-MITI supply chains
Low profile Thin SMA footprint	Reduces board space vs. SMA; compatible with tight clearance layouts in power modules

Applications

DC–DC Converters	Switching Inverters
Use Scenario: Secondary-side synchronous rectification in isolated 12V–24V buck-derived DC–DC modules. IC Role / Device Role / Timing Role: Output rectifier conducting during MOSFET off-time; handles 1A average load with minimal V_F-related loss. Use Value: 0.85V V_F at 1A reduces conduction loss by ~15% versus standard fast rectifiers, improving efficiency at light-to-moderate loads.	Use Scenario: Freewheeling path in half-bridge motor drive inverters for HVAC blowers and small pumps. IC Role / Device Role / Timing Role: Clamps inductive kickback during PWM dead-time; recovers in ≤35ns to prevent shoot-through risk. Use Value: 35ns t_rr ensures clean commutation at 20–50kHz switching frequencies, reducing voltage overshoot and snubber stress.
SMPS Power Supplies	Industrial Control Power Rails
Use Scenario: Output rectification in 36W open-frame AC–DC adapters with universal input (85–265VAC). IC Role / Device Role / Timing Role: Primary secondary-side rectifier delivering regulated 12V/3A; operates continuously at 1A average with peak surges. Use Value: 30A I_FSM accommodates startup inrush and short-circuit foldback events without degradation.	Use Scenario: Auxiliary bias supply rectification in PLC I/O modules exposed to ambient temperatures up to +70°C. IC Role / Device Role / Timing Role: Converts transformer-wound AC to stable DC for logic and sensor circuitry; must sustain operation at T_A = 70°C. Use Value: +150°C T_J_max and 20°C/W R_θJC enable reliable derating to 0.7A at 70°C ambient on standard FR4.

DC–DC Converters

Switching Inverters

Use Scenario: Secondary-side synchronous rectification in isolated 12V–24V buck-derived DC–DC modules.

IC Role / Device Role / Timing Role: Output rectifier conducting during MOSFET off-time; handles 1A average load with minimal V_F-related loss.

Use Value: 0.85V V_F at 1A reduces conduction loss by ~15% versus standard fast rectifiers, improving efficiency at light-to-moderate loads.

Use Scenario: Freewheeling path in half-bridge motor drive inverters for HVAC blowers and small pumps.

IC Role / Device Role / Timing Role: Clamps inductive kickback during PWM dead-time; recovers in ≤35ns to prevent shoot-through risk.

Use Value: 35ns t_rr ensures clean commutation at 20–50kHz switching frequencies, reducing voltage overshoot and snubber stress.

SMPS Power Supplies

Industrial Control Power Rails

Use Scenario: Output rectification in 36W open-frame AC–DC adapters with universal input (85–265VAC).

IC Role / Device Role / Timing Role: Primary secondary-side rectifier delivering regulated 12V/3A; operates continuously at 1A average with peak surges.

Use Value: 30A I_FSM accommodates startup inrush and short-circuit foldback events without degradation.

Use Scenario: Auxiliary bias supply rectification in PLC I/O modules exposed to ambient temperatures up to +70°C.

IC Role / Device Role / Timing Role: Converts transformer-wound AC to stable DC for logic and sensor circuitry; must sustain operation at T_A = 70°C.

Use Value: +150°C T_J_max and 20°C/W R_θJC enable reliable derating to 0.7A at 70°C ambient on standard FR4.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
STTH1L06S	V_RRM = 600V, t_rr = 35ns, V_F = 0.95V @ 1A, R_θJA = 70°C/W	Higher voltage rating; larger thermal footprint; not drop-in due to SMA vs. SOD-123FL package	Prefer when 600V blocking or legacy SOD-123FL layout exists; requires PCB redesign for ES1BAL
MBR1100	Schottky structure, V_F = 0.82V @ 1A, but V_RRM = 100V and I_R = 500µA @ 25°C	Lower V_F but higher leakage; unsuitable for high-temp or low-leakage freewheeling	Select only where ultra-low V_F dominates and leakage <1µA is not required; avoid in >85°C environments

Compared with STTH1L06S and MBR1100, the ES1BAL delivers optimal balance of 100V rating, 35ns speed, sub-1V forward drop, and Thin SMA manufacturability-making it preferred for cost-sensitive, space-constrained 12–48V industrial DC–DC designs.

Availability

ES1BAL is available at Aetrix Electronics and suitable for DC–DC converters, switching inverters, and industrial control power rails requiring stable component supply, consistent parametric performance, and full traceability across production lots.

Supply support for ES1BAL 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 power, automotive, and industrial markets since 1979.

The ES1BAL belongs to TSC's ES1xAL super fast rectifier family, engineered specifically for high-efficiency, high-density switching power conversion where speed, thermal performance, and SMT robustness are critical.

FAQ

What is the maximum junction temperature rating for the ES1BAL?

The ES1BAL has a maximum junction temperature (T_J) rating of +150°C, verified per absolute maximum ratings table. This allows sustained operation in enclosed industrial enclosures or near heat-generating components. Derating curves in the datasheet define usable current vs. ambient temperature, and the device maintains specified electrical performance up to this limit when mounted on a 5mm × 5mm Cu pad.

Does the ES1BAL have a specified reverse recovery time, and how is it measured?

Yes, the ES1BAL has a reverse recovery time (t_rr) of ≤35ns, measured under conditions of I_F = 0.5A, I_R = 1.0A, and I_rr = 0.25A. This value is confirmed in the Electrical Specifications table and reflects performance at 25°C. The measurement uses standardized pulse testing, enabling accurate prediction of switching loss in hard-switched topologies.

Is the ES1BAL RoHS and halogen-free compliant?

Yes, the ES1BAL is fully RoHS compliant and halogen-free per IEC 61249-2-21. These compliance statements are explicitly documented in the FEATURES section of the official TSC datasheet (Version C2103). No exemptions apply, and material declarations are available upon request for qualifying customers.

What is the moisture sensitivity level (MSL) of the ES1BAL, and what does it mean for assembly?

The ES1BAL is rated MSL Level 1 per J-STD-020, meaning it may be stored indefinitely at ≤30°C/85% RH and is safe for standard reflow without pre-baking. This eliminates floor-life tracking and dry-pack requirements, streamlining SMT line logistics for high-volume manufacturing of power supplies and motor drives.

How does the forward voltage of the ES1BAL vary with temperature and current?

The ES1BAL forward voltage decreases with rising junction temperature: at 1.0A, V_F is 0.85V at 25°C and drops to 0.71V at 125°C. This negative temperature coefficient improves thermal stability in parallel configurations. Data is provided in the Electrical Specifications table for both 0.5A and 1.0A across 25°C and 125°C conditions.

ES1BAL Specifications

Product attributes: Attribute value

Manufacturer:: Taiwan Semiconductor Corporation

Series:: -

Package/Case:: DO-221AC, SMA Flat Leads

Packaging:: Tape & Reel (TR)

Product Status:: Active

Technology:: Standard

Voltage - DC Reverse (Vr) (Max):: 100 V

Current - Average Rectified (Io):: 1A

Voltage - Forward (Vf) (Max) @ If:: 950 mV @ 1 A

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

Reverse Recovery Time (trr):: 35 ns

Current - Reverse Leakage @ Vr:: 1 µA @ 100 V

Capacitance @ Vr, F:: 18pF @ 4V, 1MHz

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: Thin SMA

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

ES1BAL FAQ

1.How can I place an order for ES1BAL through Aetrix?

Please submit a Request for Quotation (RFQ) for ES1BAL 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 ES1BAL reliable?

The price and inventory of ES1BAL are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ES1BAL is usually 5 days.

3.What payment methods are accepted for ES1BAL?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ES1BAL transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for ES1BAL?

ES1BAL orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your ES1BAL 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 ES1BAL?

For technical support, including ES1BAL datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ES1BAL requirements.

6.How does Aetrix verify that ES1BAL is sourced from the original manufacturer or authorized distributors?

All ES1BAL 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 ES1BAL meets industry standards.

7.What is the process for return or replacement of ES1BAL?

All ES1BAL units undergo pre-shipment inspection (PSI). If there is an issue with ES1BAL, 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 ES1BAL part is unused and in its original packaging.

Return procedure for ES1BAL:

1.Submit a request within 90 days.

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

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