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

Taiwan Semiconductor Corporation PU2DM

Name: PU2DM
Brand: Taiwan Semiconductor Corporation
SKU: PU2DM
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: PU2DM

Manufacturer:: Taiwan Semiconductor Corporation

Category:: Single Diodes

Package:: 2-SMD, Flat Leads

Datasheet:: PU2DM.pdf

Description:: DIODE GEN PURP 200V 2A MICRO SMA

Quantity:: RFQ Add To RFQ list

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Inventory:11,958

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Product details

Overview

PU2DM from Taiwan Semiconductor is a 2 A, 200 V ultra-fast surface-mount rectifier diode in Micro SMA package, featuring 25 ns reverse recovery time, 0.99 V forward voltage at 2 A/25°C, and 175°C maximum junction temperature. It serves as a freewheeling or output rectifier in high-frequency DC-DC converters.

For engineers reviewing the PU2DM datasheet, PU2DM pinout, PU2DM application, or PU2DM equivalent, key selection criteria include its 200 V repetitive peak reverse voltage rating, low 1 µA reverse leakage at 25°C, ultra-fast trr ≤ 36 ns under switching conditions, thermal resistance R_θJA = 60 °C/W on standard PCB, and RoHS/halogen-free compliance for industrial power designs.

Technical Context

The PU2DM employs planar silicon technology optimized for high-speed switching, with reverse recovery characteristics validated at IF = 1.0 A, di/dt = 50 A/µs, VR = 30 V (trr = 36 ns) and IF = 0.5 A, IR = 1.0 A, Irr = 0.25 A (trr ≤ 25 ns). Its cathode-band polarity marking and matte tin-plated leads ensure reliable automated assembly per J-STD-002.

Thermal performance is characterized with R_θJL = 28 °C/W and R_θJC = 34 °C/W on a 5 mm × 5 mm Cu pad test board. The device operates across –55°C to +175°C junction range and meets JESD201 Class 2 whisker resistance and UL 94V-0 flammability requirements.

Key Specifications

Parameter	Value and Actual Design Meaning
V_RRM	200 V - Maximum repetitive reverse blocking voltage; defines safe operating limit in flyback or boost converter output stages
I_F	2 A - Continuous average forward current; supports compact 2 A DC-DC output rectification without forced cooling
t_rr	≤36 ns - Measured at IF = 1.0 A, di/dt = 50 A/µs, VR = 30 V; enables >500 kHz switching frequency with low switching loss
V_F	0.99 V @ 2 A, 25°C - Forward drop directly impacts conduction loss and thermal design margin in high-current paths
I_R	≤1 µA @ 25°C - Low leakage preserves efficiency in high-impedance hold-up or sensing circuits
T_J max	+175°C - Enables operation in thermally constrained environments such as sealed power modules or automotive under-hood locations
R_θJA	60 °C/W - Thermal resistance on standard PCB; determines required copper area and airflow for thermal management

Pinout & Package

Package: Micro SMA - Surface-mount plastic package with cathode band marking, 0.006 g weight, UL 94V-0 molding compound, and matte tin-plated leads compliant with J-STD-002 solderability.

Pin/Terminal	Circuit Role	Design Meaning
Anode	Forward current entry point	Connected to lower-potential node (e.g., switch node in buck converter); must withstand surge I_FSM = 52 A (1 ms)
Cathode	Forward current exit / reverse blocking terminal	Marked by band; connects to output rail; blocks up to 200 V reverse; carries full load current and EMI noise return path

Key Features

Feature	Design Value
Ultra-fast recovery	trr ≤ 25 ns (IF = 0.5 A, IR = 1.0 A) - Reduces switching loss and EMI in high-frequency SMPS
Low forward voltage	V_F = 0.99 V @ 2 A, 25°C - Minimizes conduction loss and thermal stress in space-constrained layouts
High surge capability	I_FSM = 52 A (1 ms) - Withstands transient overloads during startup or fault conditions
Robust thermal design	R_θJL = 28 °C/W - Enables efficient heat transfer to PCB copper, supporting high-power density designs
Automated assembly ready	Moisture sensitivity level 1, J-STD-020 - No bake requirement before reflow; compatible with standard SMT lines

Applications

DC-DC Converters	Switching Inverters
Use Scenario: Secondary-side synchronous rectification in isolated 48 V–12 V buck-derived DC-DC modules for telecom and server PSUs. IC Role / Device Role / Timing Role: Freewheeling rectifier conducting during low-side switch off-time; handles 2 A continuous, 52 A surge. Use Value: 25 ns trr and 0.99 V V_F reduce switching and conduction losses, improving efficiency by ≥0.8% at 500 kHz compared to standard FRDs.	Use Scenario: Output stage rectification in 1–3 kW single-phase solar microinverters with high-frequency transformer isolation. IC Role / Device Role / Timing Role: Unidirectional current path in H-bridge output filter; blocks 200 V reverse during PWM dead-time. Use Value: 200 V V_RRM and 175°C T_Jmax support high-voltage bus operation and elevated ambient temperatures in enclosed enclosures.
Industrial Motor Drives	LED Driver Power Supplies
Use Scenario: Snubber and clamp rectification in IGBT gate-drive auxiliary supplies and regenerative braking feedback paths. IC Role / Device Role / Timing Role: Fast-recovery clamp diode absorbing inductive kickback energy during IGBT turn-off. Use Value: 36 ns trr at 50 A/µs di/dt ensures clean voltage clamping with minimal oscillation, protecting gate drivers from overvoltage.	Use Scenario: Constant-current output rectification in 30–60 W offline LED drivers with PFC front-end and flyback topology. IC Role / Device Role / Timing Role: Primary output rectifier delivering regulated DC to LED string; operates continuously at 2 A average current. Use Value: 1 µA reverse leakage at 25°C prevents standby current drift; halogen-free construction meets IEC 61249-2-21 for lighting safety compliance.

DC-DC Converters

Switching Inverters

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

IC Role / Device Role / Timing Role: Freewheeling rectifier conducting during low-side switch off-time; handles 2 A continuous, 52 A surge.

Use Value: 25 ns trr and 0.99 V V_F reduce switching and conduction losses, improving efficiency by ≥0.8% at 500 kHz compared to standard FRDs.

Use Scenario: Output stage rectification in 1–3 kW single-phase solar microinverters with high-frequency transformer isolation.

IC Role / Device Role / Timing Role: Unidirectional current path in H-bridge output filter; blocks 200 V reverse during PWM dead-time.

Use Value: 200 V V_RRM and 175°C T_Jmax support high-voltage bus operation and elevated ambient temperatures in enclosed enclosures.

Industrial Motor Drives

LED Driver Power Supplies

Use Scenario: Snubber and clamp rectification in IGBT gate-drive auxiliary supplies and regenerative braking feedback paths.

IC Role / Device Role / Timing Role: Fast-recovery clamp diode absorbing inductive kickback energy during IGBT turn-off.

Use Value: 36 ns trr at 50 A/µs di/dt ensures clean voltage clamping with minimal oscillation, protecting gate drivers from overvoltage.

Use Scenario: Constant-current output rectification in 30–60 W offline LED drivers with PFC front-end and flyback topology.

IC Role / Device Role / Timing Role: Primary output rectifier delivering regulated DC to LED string; operates continuously at 2 A average current.

Use Value: 1 µA reverse leakage at 25°C prevents standby current drift; halogen-free construction meets IEC 61249-2-21 for lighting safety compliance.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
STTH2R02	V_RRM = 200 V, I_F = 2 A, trr = 35 ns, VF = 1.05 V @ 2 A - Slightly higher V_F, same package (SMA)	Identical use in DC-DC outputs; marginally higher conduction loss at full load	Preferred where STMicroelectronics supply chain alignment is required; verify layout compatibility with identical Micro SMA footprint
ES2D	V_RRM = 200 V, I_F = 2 A, trr = 35 ns, VF = 1.05 V @ 2 A - Same electrical specs, different marking (ES2D vs P8), slightly higher R_θJA (65 °C/W)	Suitable for cost-sensitive consumer power adapters; lower thermal margin on minimal copper	Select when sourcing flexibility is critical; confirm moisture sensitivity level (MSL 1) and halogen-free status match system requirements

Compared with STTH2R02 and ES2D, the PU2DM offers marginally lower forward voltage (0.99 V vs 1.05 V) and superior thermal resistance (60 °C/W vs 65 °C/W), making it preferable for thermally dense 2 A DC-DC designs where efficiency and junction temperature headroom are critical.

Availability

PU2DM is available at Aetrix Electronics and suitable for DC-DC converters, switching inverters, and industrial motor drives requiring stable component supply, consistent parametric performance, and long-term manufacturing continuity.

Supply support for PU2DM 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, specializing in power rectifiers, TVS diodes, and MOSFETs for industrial and computing applications.

The PU2DM belongs to TSC's PU2xM ultra-fast rectifier family, designed specifically for high-efficiency, high-frequency switching power supplies where fast recovery, low V_F, and robust thermal performance are essential.

FAQ

What is the maximum repetitive peak reverse voltage rating of the PU2DM?

The PU2DM has a maximum repetitive peak reverse voltage (V_RRM) rating of 200 V, as 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 and is strictly validated for the PU2DM variant-not extrapolated from the PU2BM (100 V) version.

What is the forward voltage drop of the PU2DM at 2 A and 25°C?

The forward voltage drop (V_F) of the PU2DM is 0.99 V at 2 A and 25°C, with a maximum of 1.05 V under the same conditions. This value is measured per the Electrical Specifications table in the datasheet and reflects typical conduction loss behavior critical for thermal and efficiency calculations in 2 A DC-DC output stages.

Does the PU2DM have a defined reverse recovery time, and under what test conditions?

Yes, the PU2DM has two specified reverse recovery times: ≤25 ns under IF = 0.5 A, IR = 1.0 A, Irr = 0.25 A; and 36 ns under IF = 1.0 A, di/dt = 50 A/µs, VR = 30 V. Both values are documented in the Electrical Specifications section of the Taiwan Semiconductor datasheet and define its suitability for >500 kHz switching applications.

What package type does the PU2DM use, and what are its key mechanical attributes?

The PU2DM uses the Micro SMA surface-mount package, with polarity indicated by a cathode band, matte tin-plated leads compliant with J-STD-002, UL 94V-0 flammability rating, and JESD201 Class 2 whisker resistance. Its weight is approximately 0.006 g, and it is rated MSL Level 1 per J-STD-020-requiring no pre-reflow baking.

Is the PU2DM RoHS and halogen-free compliant?

Yes, the PU2DM is RoHS compliant and halogen-free in accordance with IEC 61249-2-21, as explicitly stated in the FEATURES section of the Taiwan Semiconductor datasheet. This compliance applies to the entire PU2xM family, including the PU2DM variant, and is verified through material declarations and process control.

PU2DM Specifications

Product attributes: Attribute value

Manufacturer:: Taiwan Semiconductor Corporation

Series:: -

Package/Case:: 2-SMD, Flat Leads

Packaging:: Tape & Reel (TR)

Product Status:: Active

Technology:: Standard

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

Current - Average Rectified (Io):: 2A

Voltage - Forward (Vf) (Max) @ If:: 1.05 V @ 2 A

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

Reverse Recovery Time (trr):: 25 ns

Current - Reverse Leakage @ Vr:: 1 µA @ 200 V

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

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: Micro SMA

Operating Temperature - Junction:: -55°C ~ 175°C

PU2DM FAQ

1.How can I place an order for PU2DM through Aetrix?

Please submit a Request for Quotation (RFQ) for PU2DM 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 PU2DM reliable?

The price and inventory of PU2DM are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PU2DM is usually 5 days.

3.What payment methods are accepted for PU2DM?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PU2DM transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for PU2DM?

PU2DM orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your PU2DM 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 PU2DM?

For technical support, including PU2DM datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PU2DM requirements.

6.How does Aetrix verify that PU2DM is sourced from the original manufacturer or authorized distributors?

All PU2DM 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 PU2DM meets industry standards.

7.What is the process for return or replacement of PU2DM?

All PU2DM units undergo pre-shipment inspection (PSI). If there is an issue with PU2DM, 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 PU2DM part is unused and in its original packaging.

Return procedure for PU2DM:

1.Submit a request within 90 days.

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

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