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Taiwan Semiconductor Corporation PUUP8B
- Part No.:
- PUUP8B
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Diodes
- Package:
- TO-277, 3-PowerDFN
- Datasheet:
-
PUUP8B.pdf
- Description:
- 25NS, 8A, 100V, ULTRA FAST RECOV
- Quantity:
- Payment:
- Shipping:
Inventory:6,000
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Product details
Overview
PUUP8B from Taiwan Semiconductor is an ultra-fast surface-mount rectifier diode with 100 V repetitive peak reverse voltage (VRRM), 8 A average forward current (IF), and 25 ns reverse recovery time (trr), designed for high-frequency switching in DC/DC converters and snubber circuits.
For engineers reviewing the PUUP8B datasheet, PUUP8B pinout, PUUP8B application, or PUUP8B equivalent, key selection criteria include its TO-277A (SMPC4.6U) wettable flank package, 0.88 V forward voltage at 8 A/25°C, 200 A surge rating, 175°C max junction temperature, and J-STD-020 Level 1 moisture sensitivity.
Technical Context
The PUUP8B is a single-die planar silicon rectifier optimized for fast switching with low Qrr (89 nC) and low trr (25–31 ns), enabling reduced switching losses in high-frequency topologies. Its thermal resistance RθJL is 2.0°C/W with ideal heatsinking, and RθJA is 48.7°C/W on a 16 mm × 16 mm PCB copper pad.
It operates across –55°C to +175°C junction temperature range, features matte tin-plated leads compliant with J-STD-002, and meets UL 94V-0 flammability and IEC 61249-2-21 halogen-free requirements.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 100 V - Maximum repetitive reverse blocking voltage; defines safe operating ceiling in DC/DC input or snubber clamp applications |
| IF | 8 A - Continuous average forward current at TL = 115°C; determines steady-state power handling in rectification paths |
| trr | 25 ns - Measured at IF = 0.5 A, IR = 1.0 A, Irr = 0.25 A; enables >1 MHz switching without excessive turn-off loss |
| VF | 0.88 V @ 8 A, 25°C - Forward conduction loss baseline; directly impacts efficiency and thermal design in high-current paths |
| Qrr | 89 nC - Reverse recovery charge; lower value reduces diode-induced EMI and switching stress on MOSFETs in synchronous designs |
| RθJL | 2.0 °C/W - Junction-to-lead thermal resistance with ideal heatsink; supports compact thermal management in space-constrained layouts |
| IFSM | 200 A @ t = 8.3 ms - Non-repetitive surge capability; withstands inrush and fault currents in industrial power supplies |
Pinout & Package
Package: TO-277A (SMPC4.6U) - Surface-mount, wettable flank, single-anode/single-cathode configuration with cathode band polarity marking; 0.104 g weight; UL 94V-0 molding compound.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Anode) | Anode connection | Primary current entry point during forward conduction; electrically tied to internal die anode |
| 2 (Anode) | Anode connection | Second anode terminal - electrically common with Pin 1 per internal single-die construction; enables dual-pad layout for improved thermal and mechanical reliability |
| 3 (Cathode) | Cathode connection | Current exit path during forward bias; marked by visible cathode band; connects to internal die cathode |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-fast recovery | trr = 25 ns ensures minimal switching loss and EMI generation in >500 kHz SMPS designs |
| Wettable flank leads | Enables automated optical inspection (AOI) of solder joints on bottom-side SMT assemblies |
| Planar silicon process | Delivers consistent parameter distribution and high reliability under thermal cycling and surge stress |
| J-STD-020 Level 1 MSL | No floor-life limitation or bake requirement before reflow; simplifies manufacturing logistics |
| Halogen-free & RoHS | Complies with IEC 61249-2-21 and EU RoHS Directive; suitable for green electronics production |
Applications
| High-Frequency Switching Power Supplies | DC/DC Converter Output Rectification |
|---|---|
Use Scenario: Used as secondary-side freewheeling diode in 300–1000 kHz flyback or forward converters. IC Role / Device Role / Timing Role: Ultra-fast rectifier providing low-loss unidirectional current path during MOSFET off-time. Use Value: 25 ns trr and 89 nC Qrr reduce voltage overshoot and ringing, improving system efficiency and EMI compliance. | Use Scenario: Employed in isolated buck-derived DC/DC modules for telecom and server POL applications. IC Role / Device Role / Timing Role: Primary output rectifier handling continuous 8 A load current with minimal conduction loss. Use Value: 0.88 V VF at 8 A lowers power dissipation versus standard FRDs, easing thermal design on dense PCBs. |
| Snubber Circuit Clamp Diode | Industrial Motor Drive Auxiliary Supply |
Use Scenario: Integrated into RCD snubbers across IGBT or MOSFET switches in inverters and UPS systems. IC Role / Device Role / Timing Role: Fast-recovery clamp diode that absorbs turn-off energy and limits voltage spikes. Use Value: Low Qrr and high IFSM (200 A) prevent snap-off failure and ensure robust transient energy absorption. | Use Scenario: Rectifying auxiliary 24 V supply derived from main DC bus in servo drives and PLC power stages. IC Role / Device Role / Timing Role: Input-stage rectifier converting AC or pulsating DC to stable DC for control logic rails. Use Value: 175°C TJMAX and –55°C to +175°C operating range support reliable operation in harsh industrial ambient conditions. |
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-8EWH01-M3/45 | 100 V VRRM, 8 A IF, trr = 35 ns, TO-277A package, but higher VF (0.95 V @ 8 A) | Slightly slower recovery increases switching loss in >600 kHz designs | Acceptable where lower cost or existing Vishay qualification outweighs 10 ns trr penalty |
| ON Semiconductor MUR8100CT | Dual common-cathode configuration in TO-220AC, not surface-mount; VF = 0.98 V @ 8 A, trr = 50 ns | Through-hole mounting and larger footprint limit use in high-density SMT designs | Only viable if board redesign accommodates through-hole and thermal mass constraints permit |
Compared with VS-8EWH01-M3/45 and MUR8100CT, the PUUP8B delivers superior high-frequency performance due to its 25 ns trr and 0.88 V VF, while maintaining full SMT compatibility and wettable flank AOI capability in the TO-277A package.
Availability
PUUP8B is available at Aetrix Electronics and suitable for high-frequency switching power supplies, DC/DC converter output rectification, and snubber circuit clamp applications requiring stable component supply and long-term industrial availability.
Supply support for PUUP8B 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 AEC-Q200 qualified lines.
The PUUP8B belongs to TSC's ultra-fast rectifier product line, engineered specifically for high-efficiency, high-frequency power conversion in industrial, telecom, and computing infrastructure where low Qrr, tight VF tolerance, and robust thermal performance are critical.
FAQ
What is the maximum junction temperature rating for the PUUP8B?
The PUUP8B has a maximum junction temperature (TJ) rating of +175°C, allowing reliable operation in high-ambient environments such as enclosed industrial power supplies and motor drive control units. This rating is supported by its planar silicon construction and TO-277A package thermal performance, and must be maintained within derating curves shown in the PUUP8B datasheet Figure 1.
Does the PUUP8B have wettable flank leads for automated optical inspection?
Yes, the PUUP8B features wettable flank leads as specified in its mechanical data, enabling reliable solder joint inspection using automated optical inspection (AOI) systems. This design supports high-yield SMT assembly in automotive and industrial manufacturing, and complies with IPC-A-610 Class 2/3 requirements when processed per J-STD-002.
What is the reverse recovery time (trr) of the PUUP8B under standard test conditions?
The PUUP8B has a reverse recovery time (trr) of 25 ns when tested at IF = 0.5 A, IR = 1.0 A, and Irr = 0.25 A. An alternate condition yields 31 ns (IF = 1.0 A, di/dt = 50 A/µs, VR = 30 V). These values are confirmed in the PUUP8B electrical specifications table and reflect its ultra-fast switching capability.
Is the PUUP8B RoHS compliant and halogen-free?
Yes, the PUUP8B is RoHS compliant and halogen-free per IEC 61249-2-21. Its molding compound and plating meet environmental compliance standards required for commercial and industrial electronics, and it carries no substance restrictions beyond those defined in EU Directive 2011/65/EU and JEDEC JS709.
What does the marking code "PU8BH" indicate on the PUUP8B device body?
The marking code "PU8BH" on the PUUP8B device body identifies the specific variant within the PUUP8x family, confirming it is the 100 V version (as opposed to PU8DH for 200 V). This laser-marked code, along with date and factory codes, enables traceability and ensures correct identification during assembly and field service of the PUUP8B.
PUUP8B Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Series:
- -
- Package/Case:
- TO-277, 3-PowerDFN
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Technology:
- Standard
- Voltage - DC Reverse (Vr) (Max):
- 100 V
- Current - Average Rectified (Io):
- 8A
- Voltage - Forward (Vf) (Max) @ If:
- 1.05 V @ 8 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- 25 ns
- Current - Reverse Leakage @ Vr:
- 2 µA @ 100 V
- Capacitance @ Vr, F:
- 96pF @ 4V, 1MHz
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SMPC4.6U
- Operating Temperature - Junction:
- -55°C ~ 175°C
PUUP8B FAQ
1.How can I place an order for PUUP8B through Aetrix?
Please submit a Request for Quotation (RFQ) for PUUP8B 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 PUUP8B reliable?
The price and inventory of PUUP8B are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PUUP8B is usually 5 days.
3.What payment methods are accepted for PUUP8B?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PUUP8B transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PUUP8B?
PUUP8B orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PUUP8B 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 PUUP8B?
For technical support, including PUUP8B datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PUUP8B requirements.
6.How does Aetrix verify that PUUP8B is sourced from the original manufacturer or authorized distributors?
All PUUP8B 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 PUUP8B meets industry standards.
7.What is the process for return or replacement of PUUP8B?
All PUUP8B units undergo pre-shipment inspection (PSI). If there is an issue with PUUP8B, 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 PUUP8B part is unused and in its original packaging.
Return procedure for PUUP8B:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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