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Taiwan Semiconductor Corporation PU2DMH
- Part No.:
- PU2DMH
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Diodes
- Package:
- 2-SMD, Flat Leads
- Datasheet:
-
PU2DMH.pdf
- Description:
- DIODE GEN PURP 200V 2A MICRO SMA
- Quantity:
- Payment:
- Shipping:
Inventory:2,616
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Product details
Overview
PU2DMH from Taiwan Semiconductor is a 2A, 200V ultra-fast surface-mount rectifier diode in Micro SMA package, featuring 25 ns reverse recovery time, 0.99 V forward voltage at 2A/25°C, and AEC-Q101 qualification for automotive use in snubber and freewheeling circuits.
For engineers reviewing the PU2DMH datasheet, PU2DMH pinout, PU2DMH application, or PU2DMH equivalent, key selection criteria include repetitive peak reverse voltage (200 V), surge current capability (52 A @ 1 ms), junction temperature range (–55°C to +175°C), thermal resistance (RθJL = 28°C/W), and AEC-Q101 qualification status.
Technical Context
The PU2DMH employs planar silicon technology optimized for high-speed switching in DC-DC converters and automotive power management. Its ultra-fast recovery (trr ≤ 25 ns) and low Qrr (57 nC) minimize switching losses during flyback and clamp operations.
Designed for surface-mount assembly with matte tin-plated leads and J-STD-002 solderability, it supports automated placement and meets JESD201 Class 2 whisker resistance. Polarity is marked by cathode band on the Micro SMA case.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 200 V - Maximum repetitive reverse blocking voltage; defines safe operating limit in snubber or freewheeling paths. |
| IF | 2 A - Continuous forward current rating; determines steady-state power handling in DC-DC output stages. |
| IFSM (t=1ms) | 52 A - Short-duration surge current capacity; enables robustness against inductive kickback transients. |
| trr | 25 ns - Reverse recovery time at IF=0.5A/IR=1.0A/Irr=0.25A; critical for minimizing switching loss in high-frequency converters. |
| Qrr | 57 nC - Reverse recovery charge; directly impacts turn-off losses and EMI generation in hard-switched topologies. |
| RθJL | 28 °C/W - Junction-to-lead thermal resistance; enables accurate thermal design when mounted on PCB copper pads. |
| TJ max | +175 °C - Maximum junction temperature; supports operation in under-hood automotive environments. |
Pinout & Package
Package: Micro SMA - Surface-mount plastic package with cathode-indicating band, UL 94V-0 molding compound, and matte tin-plated leads compliant with J-STD-002.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry point | Connected to lower-potential side of load or switch node; polarity must match schematic symbol orientation. |
| Cathode | Forward current exit / reverse blocking terminal | Marked by band on package; ties to higher-potential rail or switch drain/source in freewheeling configuration. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and UHAST per stress test requirements. |
| Ultra-fast trr ≤ 25 ns | Reduces switching loss and improves efficiency in 100–500 kHz DC-DC converters and active clamp circuits. |
| Low IR ≤ 1 µA @ 25°C | Minimizes standby leakage in battery-backed systems and high-impedance sensing nodes. |
| RθJL = 28 °C/W | Enables direct thermal coupling to PCB copper; simplifies heatsinking in space-constrained automotive modules. |
| Moisture sensitivity level 1 | Eliminates bake requirement prior to reflow; supports standard SMT assembly without special handling. |
Applications
| DC-DC Converter Output Rectification | Automotive LED Driver Freewheeling |
|---|---|
Use Scenario: High-efficiency synchronous or quasi-resonant buck converter in ADAS camera module power supply. IC Role / Device Role / Timing Role: Output rectifier conducting during low-side switch off-time; handles 2A continuous current with minimal conduction loss. Use Value: 0.99 V VF at 2A/25°C and 25 ns trr reduce power dissipation and improve light-output stability under transient load. | Use Scenario: Freewheeling path for PWM-driven headlamp LED strings in vehicle lighting control unit. IC Role / Device Role / Timing Role: Provides low-loss current recirculation path during MOSFET turn-off; clamps inductive voltage spikes. Use Value: 200 V VRRM withstands load-dump transients; AEC-Q101 qualification ensures reliability over 15-year vehicle lifetime. |
| Snubber Network in Ignition Coil Driver | Reverse Polarity Protection in 12V Automotive ECUs |
Use Scenario: RCD snubber across primary winding of gasoline engine ignition coil driver IC. IC Role / Device Role / Timing Role: Fast-recovery diode absorbing energy from leakage inductance during MOSFET turn-off edge. Use Value: 52 A IFSM (1 ms) and 57 nC Qrr suppress voltage overshoot while limiting snubber loss. | Use Scenario: Series-connected protection diode upstream of power management IC in body control module. IC Role / Device Role / Timing Role: Blocks reverse battery connection; conducts only during normal forward bias operation. Use Value: Low 0.99 V VF minimizes voltage drop and heat rise; Micro SMA footprint saves board area vs. SMA. |
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 | VRRM = 200 V, IF = 2 A, trr = 35 ns, RθJA = 70°C/W, TO-220AC package | Larger through-hole package; higher thermal resistance limits high-density layout use | Preferred where higher surge margin or legacy through-hole assembly is required |
| ES2D | VRRM = 200 V, IF = 2 A, trr = 35 ns, Micro SMA package, no AEC-Q101 qualification | Lacks automotive qualification; lower cost but unsuitable for safety-critical vehicle systems | Acceptable for industrial DC-DC where AEC-Q101 is not mandated |
Compared with STTH2R02 and ES2D, the PU2DMH delivers superior thermal performance (RθJL = 28°C/W), faster recovery (25 ns), and automotive qualification-making it the optimal choice for space-constrained, high-reliability automotive power stages requiring surface-mount integration.
Availability
PU2DMH is available at Aetrix Electronics and suitable for automotive lighting, DC-DC converter output rectification, and snubber network applications requiring stable component supply, AEC-Q101 compliance, and Micro SMA footprint compatibility.
Supply support for PU2DMH 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 devices, rectifiers, and protection components.
The PU2DMH belongs to TSC's AEC-Q101-qualified ultra-fast rectifier family, engineered specifically for high-frequency automotive power conversion where low Qrr, tight thermal resistance, and robust surge capability are essential.
FAQ
What is the maximum repetitive peak reverse voltage rating for PU2DMH?
The PU2DMH has a maximum repetitive peak reverse voltage (VRRM) rating of 200 V. This value is confirmed in the Absolute Maximum Ratings table of the official Taiwan Semiconductor datasheet (Version C2103). It defines the highest reverse voltage the device can block continuously without breakdown, making PU2DMH suitable for 12V and 24V automotive systems experiencing load dump or inductive transients up to this level.
Is PU2DMH qualified for automotive applications?
Yes, PU2DMH is AEC-Q101 qualified, as explicitly stated in the FEATURES section of the Taiwan Semiconductor datasheet. This qualification covers stress tests including high-temperature reverse bias (HTRB), temperature cycling, and unbiased highly accelerated stress testing (UHAST), confirming its suitability for automotive power electronics such as LED drivers, engine control units, and ADAS power supplies.
What is the forward voltage drop of PU2DMH at 2A and 25°C?
The forward voltage drop (VF) of PU2DMH is 0.99 V at 2 A and 25°C, per the Electrical Specifications table. This value is measured under pulsed conditions (PW = 0.3 ms) and represents typical conduction loss under nominal load. At elevated junction temperature (125°C), VF decreases to 0.84 V (max), reflecting the negative temperature coefficient of silicon diodes.
Does PU2DMH have a defined reverse recovery time, and what is its value?
Yes, PU2DMH specifies a reverse recovery time (trr) of 25 ns under the condition IF = 0.5 A, IR = 1.0 A, and Irr = 0.25 A. An alternate test condition (IF = 1.0 A, di/dt = 50 A/µs, VR = 30 V) yields 36 ns. These values confirm PU2DMH's classification as an ultra-fast rectifier, critical for minimizing switching loss in high-frequency DC-DC converters.
What package type does PU2DMH use, and is it lead-free?
PU2DMH uses the Micro SMA surface-mount package, with matte tin-plated leads that are RoHS compliant and halogen-free per IEC 61249-2-21. The package features a cathode band marking, UL 94V-0 flammability rating, and moisture sensitivity level 1-enabling standard reflow without pre-bake. Its compact size (approx. 4.5 × 2.7 mm) supports high-density automotive PCB layouts.
PU2DMH 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):
- 36 ns
- Current - Reverse Leakage @ Vr:
- 1 µA @ 200 V
- Capacitance @ Vr, F:
- 18pF @ 4V, 1MHz
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- Micro SMA
- Operating Temperature - Junction:
- -55°C ~ 175°C
PU2DMH FAQ
1.How can I place an order for PU2DMH through Aetrix?
Please submit a Request for Quotation (RFQ) for PU2DMH 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 PU2DMH reliable?
The price and inventory of PU2DMH are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PU2DMH is usually 5 days.
3.What payment methods are accepted for PU2DMH?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PU2DMH transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PU2DMH?
PU2DMH orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PU2DMH 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 PU2DMH?
For technical support, including PU2DMH datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PU2DMH requirements.
6.How does Aetrix verify that PU2DMH is sourced from the original manufacturer or authorized distributors?
All PU2DMH 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 PU2DMH meets industry standards.
7.What is the process for return or replacement of PU2DMH?
All PU2DMH units undergo pre-shipment inspection (PSI). If there is an issue with PU2DMH, 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 PU2DMH part is unused and in its original packaging.
Return procedure for PU2DMH:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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