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

Taiwan Semiconductor Corporation HS2JAF-T

Name: HS2JAF-T
Brand: Taiwan Semiconductor Corporation
SKU: HS2JAF-T
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: HS2JAF-T

Manufacturer:: Taiwan Semiconductor Corporation

Category:: Single Diodes

Package:: DO-221AC, SMA Flat Leads

Datasheet:: HS2JAF-T.pdf

Description:: 75NS, 2A, 600V, HIGH EFFICIENT R

Quantity:: RFQ Add To RFQ list

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Inventory:7,500

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Product details

Overview

HS2JAF-T from Taiwan Semiconductor is a 2 A, 600 V repetitive peak reverse voltage (V_RRM) surface-mount high-efficiency rectifier diode in SMAF package, featuring 1.33 V forward voltage at 2 A and 25°C, 75 ns reverse recovery time, and 12 pF junction capacitance - used in DC-DC converters and freewheeling paths in switching power supplies.

For engineers reviewing the HS2JAF-T datasheet, HS2JAF-T pinout, HS2JAF-T application, or HS2JAF-T equivalent, key selection criteria include its 600 V V_RRM, thermal resistance (R_θJA = 89 °C/W), low leakage (<5 µA @ 25°C), RoHS/halogen-free compliance, and suitability for automated SMT assembly in industrial and telecom power stages.

Technical Context

This device is a single-die, glass-passivated silicon PN junction rectifier optimized for high-voltage, medium-current switching applications. Its 75 ns reverse recovery time and 12 pF junction capacitance support efficient operation in 100–500 kHz SMPS topologies.

The SMAF package enables compact PCB layout with J-STD-002 solderable matte tin leads and meets UL 94V-0 flammability rating. Polarity is marked by cathode band; moisture sensitivity level is J-STD-020 Level 1.

Key Specifications

Parameter	Value and Actual Design Meaning
V_RRM	600 V - supports input rectification up to 424 V RMS AC or 600 V DC bus in offline SMPS
I_F	2 A continuous - rated for sustained conduction in mid-power DC-DC output stages
V_F @ 2 A, 25°C	1.33 V typical - determines conduction loss (≈2.66 W at full load) and thermal design margin
t_rr	75 ns max - limits switching loss and EMI in hard-switched flyback and forward converters
C_J @ 1 MHz, 4 V	12 pF - reduces capacitive coupling noise and improves high-frequency reverse blocking stability
I_R @ V_RRM, 25°C	<5 µA - ensures minimal standby power loss in high-impedance bias networks
R_θJA	89 °C/W - defines required copper area (5 mm × 5 mm pad) for thermal management at 2 A

Pinout & Package

Package: SMAF - surface-mount, molded plastic case with matte tin-plated leads, polarity indicated by cathode band, weight ≈ 0.035 g.

Pin/Terminal	Circuit Role	Design Meaning
Anode	Current entry terminal during forward conduction	Connected to lower-potential node (e.g., switch node in flyback secondary or ground return)
Cathode	Current exit terminal during forward conduction; marked by band	Connected to higher-potential output rail or capacitor positive; reverse voltage applied across this terminal

Key Features

Feature	Design Value
Glass passivated junction	Enables stable long-term reliability under thermal cycling and humidity exposure per J-STD-020 Level 1
Low I_R at 125°C	<250 µA - maintains efficiency in high-ambient environments like enclosed telecom PSUs
RoHS & halogen-free	Complies with IEC 61249-2-21 - meets global environmental compliance requirements for industrial end equipment
Automated placement compatible	SMAF footprint and lead geometry support high-yield pick-and-place at >25,000 UPH

Applications

DC-DC Converter	Switching Inverter
Use Scenario: Secondary-side synchronous rectification in isolated 48 V–12 V buck-derived DC-DC modules for server VRMs. IC Role / Device Role / Timing Role: Freewheeling rectifier conducting during low-side switch off-time; handles 2 A average current with <1.33 V drop. Use Value: Low V_F and 75 ns t_rr reduce conduction + switching losses versus standard FRDs, improving efficiency by ~0.8% at full load.	Use Scenario: Output stage anti-parallel diode in half-bridge motor drive inverters for HVAC compressors. IC Role / Device Role / Timing Role: Freewheeling path for inductive kickback during PWM dead-time; blocks 600 V reverse voltage. Use Value: 600 V V_RRM and 50 A I_FSM withstand transient overvoltage spikes without avalanche failure.
Freewheeling Diode	Offline SMPS Input Stage
Use Scenario: Inductor current recirculation path in non-isolated buck regulators powering FPGA core rails. IC Role / Device Role / Timing Role: Unidirectional current path clamping inductor voltage during switch-off; operates at 200–500 kHz. Use Value: 12 pF C_J minimizes capacitive feedthrough noise into sensitive analog control circuits.	Use Scenario: Bridge rectifier output smoothing in 230 VAC-input AC-DC adapters for industrial IoT gateways. IC Role / Device Role / Timing Role: High-voltage output rectifier after transformer secondary; conducts 2 A average with 600 V standoff. Use Value: Glass passivation and 150 °C T_JMAX ensure robustness against line surges and ambient temperatures up to 85 °C.

DC-DC Converter

Switching Inverter

Use Scenario: Secondary-side synchronous rectification in isolated 48 V–12 V buck-derived DC-DC modules for server VRMs.

IC Role / Device Role / Timing Role: Freewheeling rectifier conducting during low-side switch off-time; handles 2 A average current with <1.33 V drop.

Use Value: Low V_F and 75 ns t_rr reduce conduction + switching losses versus standard FRDs, improving efficiency by ~0.8% at full load.

Use Scenario: Output stage anti-parallel diode in half-bridge motor drive inverters for HVAC compressors.

IC Role / Device Role / Timing Role: Freewheeling path for inductive kickback during PWM dead-time; blocks 600 V reverse voltage.

Use Value: 600 V V_RRM and 50 A I_FSM withstand transient overvoltage spikes without avalanche failure.

Freewheeling Diode

Offline SMPS Input Stage

Use Scenario: Inductor current recirculation path in non-isolated buck regulators powering FPGA core rails.

IC Role / Device Role / Timing Role: Unidirectional current path clamping inductor voltage during switch-off; operates at 200–500 kHz.

Use Value: 12 pF C_J minimizes capacitive feedthrough noise into sensitive analog control circuits.

Use Scenario: Bridge rectifier output smoothing in 230 VAC-input AC-DC adapters for industrial IoT gateways.

IC Role / Device Role / Timing Role: High-voltage output rectifier after transformer secondary; conducts 2 A average with 600 V standoff.

Use Value: Glass passivation and 150 °C T_JMAX ensure robustness against line surges and ambient temperatures up to 85 °C.

Equivalent & Alternatives

The following parts are listed as comparable options for similar high-voltage rectifier applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
STTH2R06S	600 V V_RRM, 2 A I_F, 60 ns t_rr, TO-277 package	Higher thermal mass but larger footprint; requires different pad layout	Preferred where lower t_rr is critical and board space allows TO-277
ES2J	600 V V_RRM, 2 A I_F, 75 ns t_rr, SMA package (slightly larger than SMAF)	Same electrical specs but 0.2 mm longer body; may require minor stencil adjustment	Drop-in replacement if SMA footprint tolerance accommodates 2.7 mm length vs. SMAF's 2.5 mm

Compared with STTH2R06S and ES2J, the HS2JAF-T offers identical 600 V/2 A ratings and 75 ns recovery, but delivers superior manufacturability via its smaller SMAF footprint, J-STD-020 Level 1 moisture rating, and tighter V_F distribution - making it optimal for high-volume, space-constrained SMT production.

Availability

HS2JAF-T is available at Aetrix Electronics and suitable for DC-DC converters, switching inverters, and freewheeling applications requiring stable component supply, consistent parametric performance, and RoHS-compliant sourcing.

Supply support for HS2JAF-T 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 Taiwanese manufacturer specializing in discrete power semiconductors, including rectifiers, TVS diodes, and MOSFETs for industrial and computing markets.

The HS2JAF-T belongs to TSC's HS2x AF-T high-efficiency rectifier family, designed specifically for compact, high-frequency switching power supplies where low V_F, fast t_rr, and reliable SMT assembly are essential.

FAQ

What is the maximum repetitive peak reverse voltage (V_RRM) of the HS2JAF-T?

The HS2JAF-T has a V_RRM of 600 V, confirmed in the Absolute Maximum Ratings table of the official Taiwan Semiconductor datasheet (Version B2103). This rating defines the highest reverse voltage the device can block repeatedly without breakdown under normal operating conditions, making it suitable for 400 V DC bus and 230 VAC-derived offline power supplies. The HS2JAF-T shares this V_RRM value with HS2KAF-T (800 V) and HS2MAF-T (1000 V) only within their respective part-number variants.

Does the HS2JAF-T have a specified reverse recovery time (t_rr)?

Yes, the HS2JAF-T has a maximum reverse recovery time of 75 ns, measured at I_F = 0.5 A, I_R = 1.0 A, and I_RR = 0.25 A, as stated in the Electrical Specifications section. This parameter is critical for minimizing switching losses in high-frequency DC-DC converters. The HS2JAF-T shares this 75 ns t_rr value with HS2KAF-T and HS2MAF-T, while lower-voltage variants like HS2DAF-T specify 50 ns.

What package type does the HS2JAF-T use, and what are its key mechanical features?

The HS2JAF-T uses the SMAF surface-mount package - a compact, molded plastic case with matte tin-plated leads compliant with J-STD-002 solderability. Key features include UL 94V-0 flammability rating, J-STD-020 Level 1 moisture sensitivity, cathode polarity marking, and a typical weight of 0.035 g. Its dimensions differ slightly from standard SMA, enabling denser PCB layouts without sacrificing thermal performance (R_θJA = 89 °C/W on 5 mm × 5 mm Cu pad).

Is the HS2JAF-T RoHS and halogen-free compliant?

Yes, the HS2JAF-T is RoHS compliant and halogen-free per IEC 61249-2-21, as explicitly stated in the FEATURES section of the Taiwan Semiconductor datasheet. This compliance applies to all HS2x AF-T variants and supports environmental requirements for industrial, telecom, and consumer electronics. The "G" in the marking code (HS2JAF) denotes green compound, confirming halogen-free molding material.

What is the forward voltage (V_F) of the HS2JAF-T at 2 A and 25°C?

The HS2JAF-T has a typical forward voltage of 1.33 V and a maximum of 1.70 V at I_F = 2 A and T_J = 25°C, per the Electrical Specifications table. This V_F directly impacts conduction loss and thermal design - at 2 A, worst-case power dissipation is 3.4 W. At 125°C junction temperature, V_F drops to 1.10 V typical (1.31 V max), reflecting silicon's negative temperature coefficient.

HS2JAF-T 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):: 600 V

Current - Average Rectified (Io):: 2A

Voltage - Forward (Vf) (Max) @ If:: 1.7 V @ 2 A

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

Reverse Recovery Time (trr):: 75 ns

Current - Reverse Leakage @ Vr:: 5 µA @ 600 V

Capacitance @ Vr, F:: 12pF @ 4V, 1MHz

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: SMAF

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

HS2JAF-T FAQ

1.How can I place an order for HS2JAF-T through Aetrix?

Please submit a Request for Quotation (RFQ) for HS2JAF-T 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 HS2JAF-T reliable?

The price and inventory of HS2JAF-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for HS2JAF-T is usually 5 days.

3.What payment methods are accepted for HS2JAF-T?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for HS2JAF-T transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for HS2JAF-T?

HS2JAF-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your HS2JAF-T 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 HS2JAF-T?

For technical support, including HS2JAF-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your HS2JAF-T requirements.

6.How does Aetrix verify that HS2JAF-T is sourced from the original manufacturer or authorized distributors?

All HS2JAF-T 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 HS2JAF-T meets industry standards.

7.What is the process for return or replacement of HS2JAF-T?

All HS2JAF-T units undergo pre-shipment inspection (PSI). If there is an issue with HS2JAF-T, 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 HS2JAF-T part is unused and in its original packaging.

Return procedure for HS2JAF-T:

1.Submit a request within 90 days.

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

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