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

Taiwan Semiconductor Corporation HS1B

Name: HS1B
Brand: Taiwan Semiconductor Corporation
SKU: HS1B
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: HS1B

Manufacturer:: Taiwan Semiconductor Corporation

Category:: Single Diodes

Package:: DO-214AC, SMA

Datasheet:: HS1B.pdf

Description:: DIODE GEN PURP 100V 1A DO214AC

Quantity:: RFQ Add To RFQ list

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Inventory:2,823

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Product details

Overview

HS1B from Taiwan Semiconductor is a 100 V, 1 A surface-mount fast recovery rectifier in DO-214AC (SMA) package, with 30 A peak surge current, 50 ns reverse recovery time, and 1.0 V forward voltage at 1 A - used in DC/DC converters and snubber circuits.

For engineers reviewing the HS1B datasheet, HS1B pinout, HS1B application, or HS1B equivalent, key selection criteria include repetitive peak reverse voltage (100 V), thermal resistance (R_θJL = 15 °C/W), junction temperature range (–55 to +150 °C), and RoHS/halogen-free compliance for industrial power conversion designs.

Technical Context

The HS1B is a single-die, glass-passivated silicon PN junction rectifier optimized for high-efficiency switching-mode power supplies. Its fast recovery (t_rr ≤ 50 ns) and low forward voltage (V_F = 1.0 V @ 1 A, 25 °C) reduce conduction and switching losses.

Thermally, it features R_θJL = 15 °C/W and R_θJA = 70 °C/W on a 5 mm × 5 mm Cu pad, enabling reliable operation up to T_J = 150 °C. Polarity is marked by a cathode band per JEDEC DO-214AC mechanical standard.

Key Specifications

Parameter	Value and Actual Design Meaning
V_RRM	100 V - maximum repetitive reverse voltage before breakdown; defines safe operating ceiling in flyback or snubber applications
I_F	1 A continuous - rated average forward current; supports compact DC/DC converter output stages
I_FSM	30 A - non-repetitive surge rating; withstands inrush in switching inverters without failure
t_rr	≤ 50 ns - fast reverse recovery; minimizes switching loss and EMI in high-frequency SMPS
V_F	1.0 V @ 1 A, 25 °C - low conduction drop improves efficiency vs. standard rectifiers
R_θJL	15 °C/W - low junction-to-lead thermal resistance enables direct PCB heat transfer without heatsink
C_J	20 pF @ 1 MHz, 4 V - low junction capacitance reduces capacitive coupling noise in high-speed switching

Pinout & Package

Package: DO-214AC (SMA), molded plastic case meeting UL 94V-0; matte tin-plated leads, polarity indicated by cathode band; weight ≈ 0.060 g.

Pin/Terminal	Circuit Role	Design Meaning
Anode	Forward current entry	Connected to lower-potential side (e.g., switch node in buck converter); unmarked end of SMA body
Cathode	Forward current exit / reverse blocking terminal	Connected to higher-potential rail (e.g., output capacitor positive); identified by visible cathode band

Key Features

Feature	Design Value
Glass passivated junction	Enhances long-term reliability and moisture resistance (MSL Level 1) for reflow-soldered industrial assemblies
Fast recovery (≤ 50 ns)	Reduces switching loss and diode-induced ringing in 100–500 kHz SMPS topologies
DO-214AC (SMA) package	Enables automated placement and high-density layout; compatible with standard SMT pick-and-place nozzles
RoHS & halogen-free	Meets global environmental compliance requirements for consumer, industrial, and lighting products

Applications

DC/DC Converter Output Rectification	Snubber Circuit Protection
Use Scenario: Used as secondary-side rectifier in isolated flyback or forward converters delivering 5–24 V at up to 1 A. IC Role / Device Role / Timing Role: Unidirectional current path that blocks reverse voltage during transformer reset while conducting forward current. Use Value: Low V_F (1.0 V) and fast t_rr (50 ns) directly improve system efficiency and reduce thermal stress on output stage.	Use Scenario: Placed across MOSFET drain-source or IGBT collector-emitter to suppress voltage spikes during turn-off. IC Role / Device Role / Timing Role: Fast clamping device that absorbs inductive energy and limits dv/dt stress on switching devices. Use Value: 100 V V_RRM and 30 A I_FSM allow robust transient handling without degradation in repetitive snubbing.
Switching Inverter Freewheeling	LED Driver Power Stage
Use Scenario: Provides freewheeling path for inductive loads (e.g., motor windings or solenoids) in half-bridge inverters. IC Role / Device Role / Timing Role: Conducts stored inductor current when main switch turns off, preventing destructive back-EMF. Use Value: 150 °C max junction temperature and low R_θJL ensure stable operation under intermittent high-current pulses.	Use Scenario: Rectifies AC input or regulates constant-current output in offline LED drivers with passive PFC. IC Role / Device Role / Timing Role: High-voltage, high-reliability rectifier in bridge or single-diode configuration for 100–240 VAC input stages. Use Value: Glass passivation and MSL Level 1 rating support high-volume automated assembly and long-term lumen maintenance.

DC/DC Converter Output Rectification

Snubber Circuit Protection

Use Scenario: Used as secondary-side rectifier in isolated flyback or forward converters delivering 5–24 V at up to 1 A.

IC Role / Device Role / Timing Role: Unidirectional current path that blocks reverse voltage during transformer reset while conducting forward current.

Use Value: Low V_F (1.0 V) and fast t_rr (50 ns) directly improve system efficiency and reduce thermal stress on output stage.

Use Scenario: Placed across MOSFET drain-source or IGBT collector-emitter to suppress voltage spikes during turn-off.

IC Role / Device Role / Timing Role: Fast clamping device that absorbs inductive energy and limits dv/dt stress on switching devices.

Use Value: 100 V V_RRM and 30 A I_FSM allow robust transient handling without degradation in repetitive snubbing.

Switching Inverter Freewheeling

LED Driver Power Stage

Use Scenario: Provides freewheeling path for inductive loads (e.g., motor windings or solenoids) in half-bridge inverters.

IC Role / Device Role / Timing Role: Conducts stored inductor current when main switch turns off, preventing destructive back-EMF.

Use Value: 150 °C max junction temperature and low R_θJL ensure stable operation under intermittent high-current pulses.

Use Scenario: Rectifies AC input or regulates constant-current output in offline LED drivers with passive PFC.

IC Role / Device Role / Timing Role: High-voltage, high-reliability rectifier in bridge or single-diode configuration for 100–240 VAC input stages.

Use Value: Glass passivation and MSL Level 1 rating support high-volume automated assembly and long-term lumen maintenance.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
STTH1L06U (STMicroelectronics)	Same V_RRM (100 V), identical I_F (1 A), but t_rr = 45 ns and V_F = 0.95 V @ 1 A - slightly faster and lower drop	Optimized for ultra-high-frequency (>1 MHz) resonant converters where sub-50 ns recovery is critical	Select STTH1L06U if minimizing switching loss dominates over cost or supply chain preference
ES1B (ON Semiconductor)	Same V_RRM (100 V), same I_F (1 A), but t_rr = 35 ns and V_F = 0.92 V - superior speed and conduction performance	Better suited for high-efficiency USB PD adapters or compact AC/DC modules requiring minimal thermal footprint	Choose ES1B when board space and thermal margin are constrained, and qualification for new components is feasible

Compared with STTH1L06U and ES1B, the HS1B offers balanced performance at a cost-optimized BOM point, with verified reliability in high-volume lighting and industrial DC/DC applications - its 50 ns t_rr and 1.0 V V_F meet mainstream design targets without premium pricing.

Availability

HS1B is available at Aetrix Electronics and suitable for DC/DC converters, snubber circuits, and LED driver power stages requiring stable component supply, long-lifecycle availability, and RoHS-compliant sourcing.

Supply support for HS1B 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, computing, and consumer markets since 1979.

The HS1B belongs to TSC's HS1x family of high-efficiency surface-mount rectifiers, designed specifically for cost-sensitive, high-reliability power conversion in lighting, adapters, and embedded power supplies.

FAQ

What is the maximum junction temperature rating for HS1B?

The HS1B has a maximum junction temperature (T_J) rating of +150 °C, with an operational range from –55 °C to +150 °C. This allows reliable use in enclosed industrial enclosures or high-ambient environments. Derating curves in the datasheet confirm 1 A continuous current is maintainable up to 100 °C ambient on a standard 5 mm × 5 mm copper pad - essential for thermal design validation of the HS1B.

Is HS1B RoHS and halogen-free compliant?

Yes, the HS1B is fully RoHS compliant and halogen-free per Taiwan Semiconductor's M2401 specification. It meets J-STD-020 moisture sensitivity level 1 and passes JESD 201 Class 2 whisker testing. These certifications are documented in the official HS1B datasheet and supported by TSC's material declarations - confirming suitability for export-controlled and eco-regulated applications using the HS1B.

What is the reverse recovery time (t_rr) of HS1B and how is it measured?

The HS1B has a maximum reverse recovery time (t_rr) of 50 ns, tested under conditions of I_F = 0.5 A, I_R = 1.0 A, and I_rr = 0.25 A. This value is specified in the Electrical Specifications table of the HS1B datasheet and confirmed across production lots. The fast t_rr directly contributes to reduced switching loss and EMI in high-frequency power converters using the HS1B.

Does HS1B have a defined polarity marking, and how is it identified?

Yes, the HS1B uses a cathode band to indicate polarity - consistent with JEDEC DO-214AC (SMA) standard. The band is located on the cathode end of the molded plastic body and must be aligned toward the higher-potential node in circuit layout. This marking is visible under standard optical inspection and verified in the HS1B mechanical drawings - critical for correct orientation during automated placement of the HS1B.

What packaging option is available for HS1B, and what is the reel quantity?

The HS1B is supplied in DO-214AC (SMA) package on tape-and-reel, with 7,500 units per reel - as specified in the Ordering Information section of the HS1B datasheet. This packaging supports high-speed SMT assembly and is compatible with industry-standard feeders. Reel dimensions and orientation follow EIA-481 standards, ensuring seamless integration into production lines using the HS1B.

HS1B Specifications

Product attributes: Attribute value

Manufacturer:: Taiwan Semiconductor Corporation

Series:: -

Package/Case:: DO-214AC, SMA

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:: 1 V @ 1 A

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

Reverse Recovery Time (trr):: 50 ns

Current - Reverse Leakage @ Vr:: 5 µA @ 100 V

Capacitance @ Vr, F:: 20pF @ 4V, 1MHz

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: DO-214AC (SMA)

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

HS1B FAQ

1.How can I place an order for HS1B through Aetrix?

Please submit a Request for Quotation (RFQ) for HS1B 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 HS1B reliable?

The price and inventory of HS1B are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for HS1B is usually 5 days.

3.What payment methods are accepted for HS1B?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for HS1B transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for HS1B?

HS1B orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your HS1B 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 HS1B?

For technical support, including HS1B datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your HS1B requirements.

6.How does Aetrix verify that HS1B is sourced from the original manufacturer or authorized distributors?

All HS1B 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 HS1B meets industry standards.

7.What is the process for return or replacement of HS1B?

All HS1B units undergo pre-shipment inspection (PSI). If there is an issue with HS1B, 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 HS1B part is unused and in its original packaging.

Return procedure for HS1B:

1.Submit a request within 90 days.

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

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