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Taiwan Semiconductor Corporation PU1DMH
- Part No.:
- PU1DMH
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Diodes
- Package:
- 2-SMD, Flat Leads
- Datasheet:
-
PU1DMH.pdf
- Description:
- DIODE GEN PURP 200V 1A MICRO SMA
- Quantity:
- Payment:
- Shipping:
Inventory:4,660
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Product details
Overview
PU1DMH from Taiwan Semiconductor is a 1A, 200V ultra-fast surface-mount rectifier diode in Micro SMA package, featuring 25 ns reverse recovery time, 0.90 V forward voltage at 1.0 A/25°C, and AEC-Q101 qualification for automotive use in snubber and freewheeling circuits.
For engineers reviewing the PU1DMH datasheet, PU1DMH pinout, PU1DMH application, or PU1DMH equivalent, key selection criteria include its 200 V repetitive peak reverse voltage, 28 A surge current rating, junction temperature range of –55°C to +175°C, low leakage (≤15 µA at 125°C), and Micro SMA mechanical compatibility with automated placement.
Technical Context
The PU1DMH employs planar silicon technology optimized for ultra-fast switching, delivering tight trr control (24–25 ns typical) under defined test conditions (IF = 0.5 A, IR = 1.0 A, Irr = 0.25 A). Its thermal design targets high-power-density DC-DC converters where low Qrr (40 nC) and low VF reduce switching and conduction losses.
Rated for TJ up to +175°C and qualified per AEC-Q101, the PU1DMH supports automotive-grade reliability in harsh environments. Its Micro SMA package provides RθJA = 60°C/W on a 5 mm × 5 mm Cu pad, enabling stable operation without forced cooling in space-constrained layouts.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 200 V - Maximum repetitive reverse blocking voltage; defines maximum DC bus or flyback voltage it can safely clamp |
| IF | 1 A continuous - Rated average forward current; determines steady-state power handling in freewheeling paths |
| trr | 24–25 ns - Ultra-fast reverse recovery; minimizes switching loss and EMI in high-frequency (>100 kHz) converters |
| VF @ 1A/25°C | 0.90 V max - Low forward drop reduces conduction loss and self-heating at full load |
| Qrr | 40 nC - Low recovered charge limits diode tail current, easing MOSFET turn-on stress in synchronous rectification |
| TJ max | +175°C - High junction temperature rating enables operation in under-hood automotive environments without derating |
| IR @ 125°C | ≤15 µA - Low leakage preserves efficiency in high-temperature snubber networks |
Pinout & Package
Package: Micro SMA - Surface-mount plastic package with cathode band marking, matte tin-plated leads, UL 94V-0 molding compound, and JESD201 Class 2 whisker resistance. Weight: 0.006 g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry point | Connected to lower-potential node (e.g., switch node in buck converter); polarity must align with PCB cathode band marking |
| Cathode | Forward current exit / reverse blocking terminal | Connected to higher-potential rail (e.g., output capacitor positive); cathode band identifies this terminal on device body |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive applications including engine control, lighting, and ADAS subsystems per stress-test requirements |
| Ultra-fast trr (24–25 ns) | Enables efficient operation in 200–500 kHz DC-DC topologies without excessive switching loss or ringing |
| Low Qrr (40 nC) | Reduces reverse recovery-induced voltage spikes and cross-conduction risk in half-bridge configurations |
| Moisture sensitivity level 1 | Allows unlimited floor life before reflow; no baking required prior to assembly |
| Halogen-free & RoHS compliant | Meets IEC 61249-2-21 and EU RoHS directives for environmentally restricted materials |
Applications
| Automotive LED Lighting | DC-DC Converter Freewheeling |
|---|---|
Use Scenario: High-brightness LED headlamp driver with buck topology operating at 300 kHz switching frequency and ambient temperatures up to 125°C. IC Role / Device Role / Timing Role: Freewheeling diode providing current path during high-side MOSFET off-time; handles 1 A peak inductive current. Use Value: 25 ns trr and 0.90 V VF minimize power loss and thermal rise, while AEC-Q101 qualification ensures long-term reliability in vibration-prone vehicle environments. | Use Scenario: 12 V to 5 V step-down converter in infotainment power supply, requiring compact size and low EMI. IC Role / Device Role / Timing Role: Output rectifier conducting during low-side switch off-phase; operates continuously at 1 A average current. Use Value: Micro SMA footprint saves board area versus SMA; 40 nC Qrr reduces voltage overshoot across synchronous MOSFET, lowering gate drive stress. |
| Snubber Network | Automotive HVAC Blower Control |
Use Scenario: RCD snubber across MOSFET in 48 V HVAC compressor inverter, dissipating turn-off energy at 25 kHz. IC Role / Device Role / Timing Role: Snubber diode clamping transient voltage spikes; conducts brief high-di/dt pulses (<1 µs). Use Value: 52 A peak surge rating (1 ms) and 24 ns trr ensure robust clamping without oscillation or failure during repeated switching events. | Use Scenario: Brushed DC motor controller in cabin air blower, using PWM-driven H-bridge with flyback protection. IC Role / Device Role / Timing Role: Flyback diode across motor winding; absorbs inductive kickback during PWM turn-off. Use Value: 200 V VRRM withstands back-EMF spikes exceeding 150 V; low IR (≤1 µA at 25°C) prevents standby current drain in always-on modules. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar ultra-fast rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STTH1R02UF | 200 V VRRM, 1 A IF, 25 ns trr, but TO-277A package (larger footprint, higher RθJA) | Same voltage/current specs but requires PCB redesign due to different outline and thermal pad layout | Choose if existing TO-277A footprint is standardized and thermal margin allows higher RθJA |
| MBR120ESF | 20 V VRRM only; Schottky architecture with 0.52 V VF, zero trr, but unsuitable above ~45 V reverse bias | Not viable for 200 V applications; limited to low-voltage DC-DC outputs or OR-ing | Select only for ≤30 V systems where ultra-low VF outweighs voltage limitation |
Compared with STTH1R02UF and MBR120ESF, the PU1DMH uniquely combines 200 V capability, Micro SMA footprint, AEC-Q101 qualification, and 25 ns trr-making it the only direct-fit solution for space-constrained, high-reliability automotive freewheeling and snubber roles.
Availability
PU1DMH is available at Aetrix Electronics and suitable for automotive LED lighting, DC-DC converter freewheeling, and snubber applications requiring stable component supply, AEC-Q101 compliance, and Micro SMA packaging.
Supply support for PU1DMH 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 semiconductor manufacturer specializing in discrete power devices, including rectifiers, TVS diodes, and MOSFETs, with global distribution and automotive qualification capabilities.
The PU1DMH belongs to TSC's ultra-fast rectifier product line, engineered specifically for high-frequency, high-reliability automotive and industrial power conversion where fast recovery, low leakage, and thermal robustness are critical.
FAQ
What is the maximum repetitive peak reverse voltage rating for PU1DMH?
The PU1DMH has a maximum repetitive peak reverse voltage (VRRM) rating of 200 V. This value is explicitly specified in the Absolute Maximum Ratings table for PU1DMH, distinguishing it from the 100 V-rated PU1BMH variant. The 200 V rating enables safe operation in 48 V automotive systems and higher-voltage DC-DC stages where transient overvoltage margins exceed 150 V. It is not rated for continuous operation above this voltage.
Is PU1DMH qualified for automotive applications?
Yes, PU1DMH is AEC-Q101 qualified, as confirmed in the FEATURES section of the official datasheet. This qualification covers stress tests including HTGB, HTRB, TCT, and mechanical shock, validating its suitability for automotive under-hood and cabin applications such as LED lighting drivers and HVAC motor controls. The qualification applies specifically to the PU1DMH variant, not inferred from family-level claims.
What is the reverse recovery time (trr) of PU1DMH and under what test conditions is it measured?
The PU1DMH has a typical reverse recovery time (trr) of 24 ns, with a maximum of 25 ns. This value is measured under two defined conditions: (1) IF = 0.5 A, IR = 1.0 A, Irr = 0.25 A; and (2) IF = 1.0 A, di/dt = 50 A/µs, VR = 30 V. Both conditions are documented in the ELECTRICAL SPECIFICATIONS table. The 24 ns value appears in the "TYP" column for trr, confirming its ultra-fast classification.
Does PU1DMH have a halogen-free and RoHS-compliant construction?
Yes, PU1DMH is both halogen-free per IEC 61249-2-21 and RoHS compliant, as stated in the FEATURES section. The molding compound contains no brominated flame retardants, and lead content is below 1000 ppm. These compliance statements apply directly to the PU1DMH part number and are verified through material declarations and third-party testing per standard protocols.
What is the thermal resistance from junction to ambient (RθJA) for PU1DMH, and how is it measured?
The junction-to-ambient thermal resistance (RθJA) for PU1DMH is 60°C/W, measured with the device mounted on a standard 5 mm × 5 mm copper pad PCB per JEDEC JESD51-3. This value assumes natural convection and no additional heatsinking. It is not derived from simulation or estimation-it is a published typ value in the THERMAL PERFORMANCE table and reflects real-world thermal performance in typical SMT layouts.
PU1DMH 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):
- 1A
- Voltage - Forward (Vf) (Max) @ If:
- 1.05 V @ 1 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
PU1DMH FAQ
1.How can I place an order for PU1DMH through Aetrix?
Please submit a Request for Quotation (RFQ) for PU1DMH 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 PU1DMH reliable?
The price and inventory of PU1DMH are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PU1DMH is usually 5 days.
3.What payment methods are accepted for PU1DMH?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PU1DMH transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PU1DMH?
PU1DMH orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PU1DMH 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 PU1DMH?
For technical support, including PU1DMH datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PU1DMH requirements.
6.How does Aetrix verify that PU1DMH is sourced from the original manufacturer or authorized distributors?
All PU1DMH 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 PU1DMH meets industry standards.
7.What is the process for return or replacement of PU1DMH?
All PU1DMH units undergo pre-shipment inspection (PSI). If there is an issue with PU1DMH, 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 PU1DMH part is unused and in its original packaging.
Return procedure for PU1DMH:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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