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Taiwan Semiconductor Corporation PU2BMH
- Part No.:
- PU2BMH
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Diodes
- Package:
- 2-SMD, Flat Leads
- Datasheet:
-
PU2BMH.pdf
- Description:
- DIODE GEN PURP 100V 2A MICRO SMA
- Quantity:
- Payment:
- Shipping:
Inventory:2,693
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Product details
Overview
PU2BMH from Taiwan Semiconductor is a 2A, 100V 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 PU2BMH datasheet, PU2BMH pinout, PU2BMH application, or PU2BMH equivalent, key selection criteria include its 100V VRRM, 28A IFSM surge rating, -55°C to +175°C operating junction temperature, low 1 µA reverse leakage at 25°C, and Micro SMA footprint compatibility with automated placement.
Technical Context
This device is a planar-junction ultra-fast recovery rectifier optimized for high-frequency switching in DC-DC converters and automotive lighting. Its 25 ns trr and 57 nC Qrr enable efficient energy recovery in inductive load circuits, while the 28 °C/W RθJL supports thermal management on standard PCB copper pads.
The PU2BMH operates across -55°C to +175°C junction temperature range with 0.99 V VF at rated 2A forward current and 25°C, dropping to 0.84 V at 125°C - enabling stable conduction under thermal stress without derating below 2A up to 125°C ambient.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 100 V - maximum repetitive reverse voltage before breakdown; defines safe blocking capability in 12–48V automotive bus applications |
| IF | 2 A - continuous forward current rating; supports sustained power delivery in compact DC-DC output stages |
| trr | 25 ns - ultra-fast reverse recovery time; minimizes switching losses and EMI in >100 kHz converters |
| IFSM | 28 A - non-repetitive surge current (8.3 ms); withstands inrush and fault transients in automotive lighting drivers |
| RθJL | 28 °C/W - junction-to-lead thermal resistance; enables direct heat transfer to PCB copper, reducing need for thermal vias |
| IR @ 25°C | ≤1 µA - low reverse leakage; preserves efficiency in high-impedance snubber networks and standby circuits |
| Qrr | 57 nC - reverse recovery charge; quantifies stored minority-carrier charge affecting turn-off loss and diode stress |
Pinout & Package
Package: Micro SMA - surface-mount plastic case with cathode band marking, matte tin-plated leads, UL 94V-0 molding compound, and JESD201 Class 2 whisker resistance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry point | Connected to lower-potential side of inductive load or switch node; requires low-inductance layout to minimize voltage overshoot |
| Cathode | Forward current exit / reverse voltage blocking terminal | Marked by band; ties to higher-potential rail or switching node; determines polarity-sensitive placement in freewheeling paths |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD per stress test requirements |
| Ultra-fast recovery (trr = 25 ns) | Reduces switching loss and diode-induced ringing in 200–500 kHz DC-DC topologies |
| Low forward voltage (VF = 0.99 V @ 2A/25°C) | Minimizes conduction loss in high-duty-cycle automotive LED drivers and power supplies |
| Micro SMA package | Enables high-density placement on space-constrained PCBs while maintaining 2A current handling and thermal performance |
| Moisture sensitivity level 1 | Eliminates bake requirement prior to reflow, supporting standard SMT assembly without process modification |
Applications
| Automotive LED Lighting Driver | DC-DC Converter Output Rectification |
|---|---|
Use Scenario: High-brightness LED headlamp module with buck-boost driver operating at 200 kHz switching frequency. IC Role / Device Role / Timing Role: Freewheeling diode providing current path during high-side switch off-time; critical for maintaining LED current continuity. Use Value: 25 ns trr prevents reverse recovery tail current from disrupting PWM dimming fidelity and reduces EMI filtering burden. | Use Scenario: 12V-to-5V synchronous buck converter in infotainment system power rail. IC Role / Device Role / Timing Role: Secondary-side rectifier in asynchronous configuration; handles peak output current during transient load steps. Use Value: 28A IFSM withstands 200% load surges without failure; 0.99 V VF limits conduction loss to <1.2W at full 2A load. |
| Snubber Network in Ignition Coil Driver | Freewheeling Diode in Automotive Blower Motor Control |
Use Scenario: RCD snubber across primary winding of 12V ignition coil driver using N-channel MOSFET. IC Role / Device Role / Timing Role: Fast-clamping diode absorbing inductive kickback energy during MOSFET turn-off. Use Value: 100V VRRM safely blocks 80V transient spikes; 57 nC Qrr ensures minimal energy dissipation in snubber resistor. | Use Scenario: 24V HVAC blower motor controlled via PWM-driven N-channel FET with inductive flyback. IC Role / Device Role / Timing Role: Freewheeling path for motor winding current when FET is off; must conduct bidirectionally in regenerative braking. Use Value: -55°C to +175°C TJ range ensures operation under hood temperatures; 2A IF sustains continuous 1.8A motor current with margin. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar ultra-fast rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STTH2R01 | 100V VRRM, 2A IF, 30 ns trr, DO-214AA (SMA) package | Slightly slower recovery; same voltage/current rating but larger SMA footprint | Acceptable where 5 ns slower trr is tolerable and board space allows DO-214AA |
| MBR2100 | 100V VRRM, 2A IF, Schottky construction, 0.85 V VF, Micro SMA | No reverse recovery (trr ≈ 0), but limited to ≤125°C TJ; higher IR at elevated temperature | Preferred for low-loss, low-noise apps below 125°C; unsuitable for 175°C under-hood environments |
Compared with STTH2R01 and MBR2100, PU2BMH uniquely combines AEC-Q101 qualification, 175°C junction rating, and Micro SMA footprint - making it the only choice for space-constrained, high-temperature automotive freewheeling where both reliability and size matter.
Availability
PU2BMH is available at Aetrix Electronics and suitable for automotive LED lighting, DC-DC converter output rectification, and snubber network applications requiring stable component supply, long-term lifecycle support, and AEC-Q101 compliance.
Supply support for PU2BMH 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 devices, and automotive-qualified components.
The PU2BMH belongs to TSC's ultra-fast rectifier product line, engineered specifically for high-reliability automotive subsystems demanding robust thermal performance, fast switching, and zero-defect manufacturing traceability.
FAQ
What is the maximum junction temperature rating for PU2BMH?
The PU2BMH has a maximum junction temperature (TJ) rating of +175°C, validated per AEC-Q101 stress testing. This allows reliable operation in under-hood automotive environments where ambient temperatures exceed 105°C. The device maintains full 2A forward current capability up to 125°C ambient when mounted on a 5 mm × 5 mm Cu pad, as specified in the thermal performance data sheet.
Is PU2BMH pin-compatible with other Micro SMA rectifiers like MUR220 or STTH2R01?
PU2BMH uses the standard Micro SMA package with anode/cathode polarity defined by the cathode band, matching mechanical pinout of industry-standard Micro SMA rectifiers. However, it is not a drop-in replacement for MUR220 (200V) or STTH2R01 (DO-214AA) due to voltage rating and package dimension differences - STTH2R01 uses larger SMA, and MUR220 exceeds PU2BMH's 100V VRRM.
Does PU2BMH meet automotive qualification standards?
Yes, PU2BMH is explicitly AEC-Q101 qualified, with full test reports covering HTGB, HTRB, TC, UHAST, and ESD per JESD22. This qualification covers the exact PU2BMH variant (not just the family), confirming suitability for automotive powertrain, body, and lighting systems where reliability under thermal and mechanical stress is mandatory.
What is the reverse recovery time (trr) of PU2BMH under typical operating conditions?
The PU2BMH reverse recovery time is 25 ns under the test condition IF = 0.5 A, IR = 1.0 A, Irr = 0.25 A. At higher stress levels (IF = 1.0 A, di/dt = 50 A/µs, VR = 30 V), trr increases to 36 ns. These values are measured and guaranteed per the C2103 datasheet revision, directly impacting switching loss in high-frequency DC-DC converters.
Can PU2BMH be used in place of a Schottky diode like MBR2100?
PU2BMH can replace MBR2100 in applications requiring >125°C operation or lower reverse leakage at high temperature, but not where zero reverse recovery is essential. Unlike the Schottky MBR2100, PU2BMH is a PN junction ultra-fast rectifier with 25 ns trr and higher VF, yet offers superior high-temperature stability and AEC-Q101 validation - making PU2BMH the preferred choice for under-hood automotive freewheeling.
PU2BMH 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):
- 100 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 @ 100 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
PU2BMH FAQ
1.How can I place an order for PU2BMH through Aetrix?
Please submit a Request for Quotation (RFQ) for PU2BMH 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 PU2BMH reliable?
The price and inventory of PU2BMH are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PU2BMH is usually 5 days.
3.What payment methods are accepted for PU2BMH?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PU2BMH transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PU2BMH?
PU2BMH orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PU2BMH 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 PU2BMH?
For technical support, including PU2BMH datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PU2BMH requirements.
6.How does Aetrix verify that PU2BMH is sourced from the original manufacturer or authorized distributors?
All PU2BMH 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 PU2BMH meets industry standards.
7.What is the process for return or replacement of PU2BMH?
All PU2BMH units undergo pre-shipment inspection (PSI). If there is an issue with PU2BMH, 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 PU2BMH part is unused and in its original packaging.
Return procedure for PU2BMH:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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