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

Taiwan Semiconductor Corporation PU4BBH

Name: PU4BBH
Brand: Taiwan Semiconductor Corporation
SKU: PU4BBH
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: PU4BBH

Manufacturer:: Taiwan Semiconductor Corporation

Category:: Single Diodes

Package:: DO-214AA, SMB

Datasheet:: PU4BBH.pdf

Description:: DIODE GEN PURP 100V 4A DO214AA

Quantity:: RFQ Add To RFQ list

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Inventory:8,306

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Product details

Overview

PU4BBH from Taiwan Semiconductor is a 4A, 100V ultra-fast surface-mount rectifier diode in DO-214AA (SMB) 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 high-efficiency freewheeling or snubber diode in DC/DC converters operating at high switching frequencies.

For engineers reviewing the PU4BBH datasheet, PU4BBH pinout, PU4BBH application, or PU4BBH equivalent, key selection criteria include its 100V V_RRM, 130A I_FSM, 175°C T_J_MAX, low R_θJA of 69°C/W, and AEC-Q101 qualification - all critical for automotive power supply and industrial SMPS design.

Technical Context

The PU4BBH employs planar silicon technology to achieve ultra-fast recovery with trr ≤25ns under IF=0.5A/IR=1.0A conditions and Qrr = 57nC, enabling efficient operation in hard-switched topologies. Its single-die configuration and DO-214AA (SMB) package support automated placement and meet JESD201 Class 2 whisker resistance.

Thermal performance is characterized by R_θJL = 13°C/W and R_θJC = 17°C/W on a 10mm × 10mm Cu pad PCB, allowing sustained 4A average forward current up to 125°C ambient when properly heatsinked. Reverse leakage remains ≤2µA at 25°C and ≤10µA at 125°C across rated V_RRM.

Key Specifications

Parameter	Value and Actual Design Meaning
V_RRM	100 V - Maximum repetitive reverse voltage the device blocks without breakdown; defines usable input range in 12–48V DC/DC systems.
I_F	4 A - Continuous average forward current rating at TA=25°C; derates linearly above 25°C per Fig.1 curve.
t_rr	25 ns - Measured under IF=0.5A, IR=1.0A, Irr=0.25A; enables <1MHz switching in synchronous rectification and snubber circuits.
V_F @ 4A/25°C	0.84 V (typ), 0.93 V (max) - Directly determines conduction loss; yields ~3.4W max dissipation at full load.
R_θJA	69 °C/W - Thermal resistance from junction to ambient on standard 10mm×10mm Cu pad; sets thermal margin for board-level layout.
Q_rr	57 nC - Reverse recovery charge affecting turn-off losses and EMI in hard-switched converters.
AEC-Q101	Qualified - Confirmed reliability for automotive power electronics per stress test requirements (HTOL, TC, HTRB, etc.).

Pinout & Package

DO-214AA (SMB) surface-mount package with cathode band marking; matte tin-plated leads compliant with J-STD-002 solderability and JESD201 Class 2 whisker resistance. Polarity is unidirectional: anode and cathode terminals defined by molded band.

Pin/Terminal	Circuit Role	Design Meaning
Anode (unmarked end)	Forward current entry point	Connected to lower-potential node (e.g., switch node in buck converter); must handle 4A continuous and 130A surge.
Cathode (banded end)	Forward current exit / reverse blocking terminal	Connected to output rail or snubber network; withstands 100V reverse bias and absorbs reverse recovery energy.

Key Features

Feature	Design Value
AEC-Q101 qualification	Validated for automotive underhood applications including engine control modules and ADAS power supplies.
Ultra-fast trr ≤25 ns	Reduces switching loss and EMI generation in >500kHz DC/DC converters and active clamp circuits.
Low V_F = 0.84V @ 4A/25°C	Minimizes conduction loss versus standard FRDs, improving efficiency in 12V–48V industrial SMPS.
DO-214AA (SMB) package	Enables high-density PCB layouts and compatibility with standard SMT pick-and-place equipment.
Moisture sensitivity level 1	Eliminates bake requirement prior to reflow; supports direct assembly into production lines.

Applications

Automotive DC/DC Converters	Industrial SMPS Outputs
Use Scenario: Step-down conversion from 48V battery to 12V auxiliary rail in electric vehicles. IC Role / Device Role / Timing Role: Freewheeling diode in synchronous buck topology, conducting during low-side FET off-time. Use Value: 25ns t_rr and 57nC Q_rr reduce cross-conduction loss and EMI, supporting 1MHz+ switching without external snubbers.	Use Scenario: Output rectification in 300W telecom-grade isolated flyback or forward converter. IC Role / Device Role / Timing Role: Secondary-side unidirectional current path handling 4A average load with minimal voltage drop. Use Value: 0.84V V_F at 4A lowers conduction loss by ~15% vs. legacy FRDs, improving full-load efficiency by 0.8–1.2%.
Snubber Networks	High-Frequency Inverters
Use Scenario: RCD snubber across MOSFETs in motor drive half-bridges switching at 20–100kHz. IC Role / Device Role / Timing Role: Fast-recovery path for transient energy dissipation during MOSFET turn-off. Use Value: 130A I_FSM withstands high peak currents; 25ns t_rr ensures clean energy transfer without oscillation.	Use Scenario: Commutation diode in 3-phase IGBT-based servo drives operating at 8–20kHz. IC Role / Device Role / Timing Role: Anti-parallel diode providing reactive current return path during PWM dead-time. Use Value: AEC-Q101 qualification and 175°C T_J_MAX ensure robustness under cyclic thermal stress in enclosed enclosures.

Automotive DC/DC Converters

Industrial SMPS Outputs

Use Scenario: Step-down conversion from 48V battery to 12V auxiliary rail in electric vehicles.

IC Role / Device Role / Timing Role: Freewheeling diode in synchronous buck topology, conducting during low-side FET off-time.

Use Value: 25ns t_rr and 57nC Q_rr reduce cross-conduction loss and EMI, supporting 1MHz+ switching without external snubbers.

Use Scenario: Output rectification in 300W telecom-grade isolated flyback or forward converter.

IC Role / Device Role / Timing Role: Secondary-side unidirectional current path handling 4A average load with minimal voltage drop.

Use Value: 0.84V V_F at 4A lowers conduction loss by ~15% vs. legacy FRDs, improving full-load efficiency by 0.8–1.2%.

Snubber Networks

High-Frequency Inverters

Use Scenario: RCD snubber across MOSFETs in motor drive half-bridges switching at 20–100kHz.

IC Role / Device Role / Timing Role: Fast-recovery path for transient energy dissipation during MOSFET turn-off.

Use Value: 130A I_FSM withstands high peak currents; 25ns t_rr ensures clean energy transfer without oscillation.

Use Scenario: Commutation diode in 3-phase IGBT-based servo drives operating at 8–20kHz.

IC Role / Device Role / Timing Role: Anti-parallel diode providing reactive current return path during PWM dead-time.

Use Value: AEC-Q101 qualification and 175°C T_J_MAX ensure robustness under cyclic thermal stress in enclosed enclosures.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
STTH4L06D	600V V_RRM, 4A I_F, 35ns t_rr, TO-277 package	Higher voltage rating but slower recovery; larger footprint	Choose only if system requires >100V blocking; not suitable for space-constrained 100V designs.
ES4D-E3/57T	200V V_RRM, 4A I_F, 35ns t_rr, DO-214AA package	Same package but higher V_RRM and slower recovery; no AEC-Q101	Acceptable for non-automotive 200V applications where qualification is not required.

Compared with STTH4L06D and ES4D-E3/57T, the PU4BBH uniquely combines 100V rating, 25ns t_rr, AEC-Q101 qualification, and DO-214AA footprint - making it optimal for compact, high-frequency automotive DC/DC converters where thermal and reliability margins are critical.

Availability

PU4BBH is available at Aetrix Electronics and suitable for automotive power modules, industrial DC/DC converters, and high-frequency snubber circuits requiring stable component supply and long-term lifecycle assurance.

Supply support for PU4BBH 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, serving automotive, industrial, and consumer markets since 1979.

The PU4BBH belongs to TSC's AEC-Q101-qualified ultra-fast rectifier family, designed specifically for high-efficiency, high-reliability power conversion in automotive and industrial environments where fast recovery, low loss, and thermal robustness are mandatory.

FAQ

What is the maximum repetitive peak reverse voltage (V_RRM) for PU4BBH?

The PU4BBH has a V_RRM of 100 V, verified per absolute maximum ratings table in the official Taiwan Semiconductor datasheet revision B2109. This rating applies across the full operating temperature range (−55°C to +175°C) and defines the highest reverse voltage the device can block repeatedly without breakdown. Exceeding this value risks irreversible avalanche failure.

Is PU4BBH qualified for automotive applications?

Yes, PU4BBH is AEC-Q101 qualified, confirmed in the FEATURES section of the official datasheet. This qualification covers stress tests including high-temperature operating life (HTOL), temperature cycling (TC), and highly accelerated temperature-humidity stress testing (HAST), ensuring suitability for under-hood automotive power systems such as body control modules and ADAS power supplies.

What is the forward voltage (V_F) of PU4BBH at 4A and 25°C?

The PU4BBH exhibits a typical forward voltage of 0.84 V and a maximum of 0.93 V at 4A and 25°C, as specified in the ELECTRICAL SPECIFICATIONS table. This value is measured under pulsed conditions (PW = 0.3ms) and directly impacts conduction loss - for example, resulting in ≤3.7W worst-case dissipation at full rated current.

Does PU4BBH have a defined reverse recovery time (t_rr)?

Yes, PU4BBH has a specified reverse recovery time of ≤25 ns, measured under IF = 0.5A, IR = 1.0A, and Irr = 0.25A conditions. An alternate test condition (IF = 1.0A, di/dt = 50A/µs, VR = 30V) yields 31 ns. These values are documented in the ELECTRICAL SPECIFICATIONS table and confirm its classification as an ultra-fast rectifier suitable for >500kHz switching.

What package type does PU4BBH use, and is it RoHS compliant?

PU4BBH uses the DO-214AA (SMB) surface-mount package with matte tin-plated leads, and is RoHS compliant and halogen-free per IEC 61249-2-21. The package meets UL 94V-0 flammability rating and J-STD-002 solderability standards, with moisture sensitivity level (MSL) 1 - eliminating pre-bake requirements before reflow soldering.

PU4BBH Specifications

Product attributes: Attribute value

Manufacturer:: Taiwan Semiconductor Corporation

Series:: -

Package/Case:: DO-214AA, SMB

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:: Automotive

Qualification:: AEC-Q101

Mounting Type:: Surface Mount

Supplier Device Package:: DO-214AA (SMB)

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

PU4BBH FAQ

1.How can I place an order for PU4BBH through Aetrix?

Please submit a Request for Quotation (RFQ) for PU4BBH 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 PU4BBH reliable?

The price and inventory of PU4BBH are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PU4BBH is usually 5 days.

3.What payment methods are accepted for PU4BBH?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PU4BBH transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for PU4BBH?

PU4BBH orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your PU4BBH 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 PU4BBH?

For technical support, including PU4BBH datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PU4BBH requirements.

6.How does Aetrix verify that PU4BBH is sourced from the original manufacturer or authorized distributors?

All PU4BBH 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 PU4BBH meets industry standards.

7.What is the process for return or replacement of PU4BBH?

All PU4BBH units undergo pre-shipment inspection (PSI). If there is an issue with PU4BBH, 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 PU4BBH part is unused and in its original packaging.

Return procedure for PU4BBH:

1.Submit a request within 90 days.

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

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