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Taiwan Semiconductor Corporation PU4BCH
- Part No.:
- PU4BCH
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
PU4BCH.pdf
- Description:
- DIODE GEN PURP 100V 4A DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:2,860
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Product details
Overview
PU4BCH from Taiwan Semiconductor is a 4A, 100V ultra-fast surface-mount rectifier in DO-214AB (SMC) package, featuring 25ns reverse recovery time, 0.84V forward voltage at 4A/25°C, and AEC-Q101 qualification for automotive-grade reliability. It serves as a primary output rectifier in high-frequency DC/DC converters where low conduction loss and fast switching are critical.
For engineers reviewing the PU4BCH datasheet, PU4BCH pinout, PU4BCH application, or PU4BCH equivalent, key selection criteria include its 100V VRRM, 130A IFSM, 175°C TJMAX, RθJL = 13°C/W thermal performance, and DO-214AB mechanical compatibility with automated SMT assembly lines.
Technical Context
The PU4BCH employs planar junction technology to achieve ultra-fast recovery (trr ≤ 25ns) and low forward voltage (VF = 0.84V @ 4A, 25°C), enabling high-efficiency operation in hard-switched topologies. Its single-die configuration and cathode-band polarity marking support unidirectional current flow in flyback and forward converter secondary-side rectification.
Thermally, it delivers RθJL = 13°C/W and RθJA = 57°C/W on a 16mm × 16mm Cu pad PCB, allowing sustained 4A average forward current up to 125°C ambient when properly heatsinked. The device meets JESD201 Class 2 whisker resistance and J-STD-020 Level 1 moisture sensitivity.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 100 V - Maximum repetitive reverse voltage before breakdown; sets safe operating limit in 48V–60V bus DC/DC outputs. |
| IF | 4 A - Continuous average forward current rating; supports 50W–80W power stages with appropriate thermal design. |
| trr | 25 ns - Reverse recovery time under IF = 0.5A, IR = 1.0A, Irr = 0.25A; enables >500 kHz switching without excessive switching loss. |
| VF @ 4A, 25°C | 0.84 V - Forward voltage drop; determines conduction loss of ~3.4 W at full load, critical for thermal budgeting. |
| RθJL | 13 °C/W - Junction-to-lead thermal resistance; enables direct thermal coupling to PCB copper for passive cooling in space-constrained layouts. |
| Qrr | 57 nC - Reverse recovery charge; impacts snubber sizing and EMI generation in high-di/dt applications like synchronous rectifier replacement. |
| AEC-Q101 | Qualified - Certified for automotive component stress testing (temperature cycling, HTRB, etc.), supporting under-hood and ADAS power supply use. |
Pinout & Package
DO-214AB (SMC) package: molded plastic case with matte tin-plated leads, cathode indicated by band, polarity-critical for unidirectional rectification. Weight ≈ 0.200 g. UL 94V-0 rated molding compound.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (unbanded end) | Input terminal for forward current entry | Connected to transformer secondary or switch node; must withstand peak reverse voltage during off-state. |
| Cathode (banded end) | Output terminal for forward current exit | Connected to output capacitor and load; polarity marking ensures correct orientation during automated placement. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-fast recovery (trr ≤ 25 ns) | Reduces switching losses and EMI in high-frequency DC/DC converters operating above 300 kHz. |
| Low VF (0.84 V @ 4A, 25°C) | Minimizes conduction loss and thermal rise in compact power supplies with limited heatsinking. |
| AEC-Q101 qualification | Validates robustness for automotive power modules requiring extended temperature cycling and humidity exposure. |
| DO-214AB (SMC) package | Enables high-density layout and compatibility with standard SMT pick-and-place equipment and reflow profiles. |
| J-STD-020 Level 1 moisture sensitivity | Eliminates bake requirements prior to assembly, reducing manufacturing cost and process complexity. |
Applications
| Automotive DC/DC Converters | Industrial SMPS Secondary Rectification |
|---|---|
Use Scenario: 12V–48V bidirectional DC/DC converter in 48V mild-hybrid vehicle architecture. IC Role / Device Role / Timing Role: Primary unidirectional output rectifier handling continuous 4A load current at 200–500 kHz switching frequency. Use Value: AEC-Q101 qualification and 175°C TJMAX ensure reliability under engine-bay thermal stress while trr ≤ 25 ns limits switching loss. | Use Scenario: 24V output stage of industrial programmable logic controller (PLC) power supply. IC Role / Device Role / Timing Role: Fast-recovery rectifier in forward converter secondary winding, replacing slower diodes to improve efficiency. Use Value: 0.84V VF reduces conduction loss by ~15% vs. legacy 1N5822, lowering thermal load on PCB copper area. |
| Snubber Networks | High-Frequency Flyback Adapters |
Use Scenario: Clamp diode in RCD snubber circuit across MOSFET in telecom AC/DC front-end. IC Role / Device Role / Timing Role: Fast turn-off clamp path absorbing leakage inductance energy during MOSFET turn-off. Use Value: Low Qrr (57 nC) and fast trr minimize snubber dissipation and improve transient response. | Use Scenario: 12V/3A isolated flyback adapter for IoT gateway power supply. IC Role / Device Role / Timing Role: Output rectifier operating at 150–250 kHz with tight size constraints on PCB. Use Value: DO-214AB footprint allows high-power density layout; RθJL = 13°C/W enables thermal management without external heatsink. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar ultra-fast rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Vishay VS-4EYH01-M3/45 | Same 100V VRRM, 4A IF, but trr = 35 ns (vs. 25 ns); VF = 0.87 V @ 4A. | Higher trr increases switching loss in >400 kHz designs; suitable for lower-frequency industrial SMPS. | Select if cost sensitivity outweighs 10 ns trr advantage and thermal margin is ample. |
| ON Semiconductor MUR410EG | 100V VRRM, 4A IF, trr = 30 ns, VF = 0.89 V @ 4A; TO-220AC package (not SMC). | Larger footprint and through-hole mounting incompatible with high-density SMT layouts. | Choose only when board-level thermal mass justifies TO-220 and automated placement is not required. |
Compared with VS-4EYH01-M3/45 and MUR410EG, the PU4BCH offers the fastest recovery (25 ns), lowest VF (0.84 V), and smallest SMT-compatible footprint (DO-214AB), making it optimal for space- and efficiency-critical automotive and high-frequency industrial power supplies.
Availability
PU4BCH is available at Aetrix Electronics and suitable for automotive DC/DC converters, industrial SMPS secondary rectification, and high-frequency flyback adapters requiring stable component supply, AEC-Q101 compliance, and ultra-fast switching performance.
Supply support for PU4BCH 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 PU4BCH belongs to TSC's ultra-fast rectifier product line, engineered specifically for high-efficiency, high-frequency power conversion in automotive and industrial environments where low VF, fast trr, and AEC-Q101 reliability are mandatory.
FAQ
What is the maximum junction temperature rating for PU4BCH?
The PU4BCH has a maximum junction temperature (TJMAX) of +175°C, verified per absolute maximum ratings in the official Taiwan Semiconductor datasheet. This rating allows operation in under-hood automotive environments and high-ambient industrial settings. Derating curves confirm 4A average forward current is sustainable up to 125°C ambient when mounted on a 16mm × 16mm Cu pad, as specified in the thermal performance section of the PU4BCH datasheet.
Is PU4BCH pin-compatible with other DO-214AB rectifiers like MUR410 or SB5100?
Yes, PU4BCH uses the standard DO-214AB (SMC) package with anode and cathode terminals matching industry-standard pinout for this outline. However, electrical parameters differ: PU4BCH offers faster trr (25 ns vs. 50 ns for MUR410) and lower VF (0.84 V vs. 0.98 V) than MUR410, and higher VRRM (100 V vs. 100 V same) than SB5100 (100 V). Mechanical fit is guaranteed; electrical substitution requires validation of recovery and conduction loss impact.
Does PU4BCH meet automotive qualification standards?
Yes, PU4BCH is explicitly AEC-Q101 qualified, as stated in the features section of the Taiwan Semiconductor documentation. This certification covers stress tests including temperature cycling, high-temperature reverse bias (HTRB), and unbiased highly accelerated stress testing (UHAST), confirming suitability for automotive power systems such as 48V DC/DC converters and ADAS subsystems.
What is the reverse recovery time (trr) specification for PU4BCH under standard test conditions?
The PU4BCH reverse recovery time is specified as ≤ 25 ns under test condition: IF = 0.5 A, IR = 1.0 A, Irr = 0.25 A. An alternate condition (IF = 1.0 A, di/dt = 50 A/µs, VR = 30 V) yields trr ≤ 31 ns. These values are measured and published in the Electrical Specifications table of the PU4BCH datasheet, confirming its classification as an ultra-fast rectifier.
How does the thermal performance of PU4BCH compare to similar SMC-packaged rectifiers?
PU4BCH achieves RθJL = 13°C/W and RθJA = 57°C/W on a 16mm × 16mm Cu pad PCB - among the best-in-class for DO-214AB rectifiers. This outperforms typical competitors (e.g., MUR410: RθJA ≈ 70°C/W) due to optimized die attach and leadframe design. Lower thermal resistance directly enables higher power density and reduced heatsink dependency in the PU4BCH-based design.
PU4BCH Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Series:
- -
- Package/Case:
- DO-214AB, SMC
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Technology:
- Standard
- Voltage - DC Reverse (Vr) (Max):
- 100 V
- Current - Average Rectified (Io):
- 4A
- Voltage - Forward (Vf) (Max) @ If:
- 930 mV @ 4 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- 25 ns
- Current - Reverse Leakage @ Vr:
- 2 µA @ 100 V
- Capacitance @ Vr, F:
- 78pF @ 4V, 1MHz
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AB (SMC)
- Operating Temperature - Junction:
- -55°C ~ 175°C
PU4BCH FAQ
1.How can I place an order for PU4BCH through Aetrix?
Please submit a Request for Quotation (RFQ) for PU4BCH 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 PU4BCH reliable?
The price and inventory of PU4BCH are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PU4BCH is usually 5 days.
3.What payment methods are accepted for PU4BCH?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PU4BCH transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PU4BCH?
PU4BCH orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PU4BCH 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 PU4BCH?
For technical support, including PU4BCH datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PU4BCH requirements.
6.How does Aetrix verify that PU4BCH is sourced from the original manufacturer or authorized distributors?
All PU4BCH 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 PU4BCH meets industry standards.
7.What is the process for return or replacement of PU4BCH?
All PU4BCH units undergo pre-shipment inspection (PSI). If there is an issue with PU4BCH, 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 PU4BCH part is unused and in its original packaging.
Return procedure for PU4BCH:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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