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Taiwan Semiconductor Corporation MMBD4148SE RFG
- Part No.:
- MMBD4148SE RFG
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Diode Arrays
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
MMBD4148SE RFG.pdf
- Description:
- DIODE ARRAY GP 100V 200MA SOT23
- Quantity:
- Payment:
- Shipping:
Inventory:915
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Product details
Overview
MMBD4148SE RFG from Taiwan Semiconductor is a surface-mount 100 V, 200 mA fast-switching diode in SOT-23 package, featuring 4 pF junction capacitance, 4 ns reverse recovery time, and 0.82 V forward voltage at 10 mA - used for high-frequency switching in DC/DC converters and SMPS secondary-side snubbing.
For engineers reviewing the MMBD4148SE RFG datasheet, MMBD4148SE RFG pinout, MMBD4148SE RFG application, or MMBD4148SE RFG equivalent, key selection criteria include reverse recovery time, junction capacitance, thermal resistance (357 °C/W), moisture sensitivity level (J-STD-020 Level 1), and RoHS/halogen-free compliance.
Technical Context
This discrete silicon switching diode operates with a maximum repetitive peak reverse voltage of 100 V and supports surge currents up to 2 A (non-repetitive, 1 μs). Its low VF (≤0.82 V) and fast trr (≤4 ns) enable efficient high-speed switching in flyback and buck converter topologies.
The device is rated for junction temperatures from –55 °C to +150 °C, features JESD201 Class 1A whisker resistance, matte tin-plated leads, and UL 94 V-0 molding compound - confirming suitability for automated reflow assembly and industrial-grade reliability.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 100 V - supports input rectification and clamp circuits up to 100 V reverse bias without breakdown |
| IF | 200 mA continuous - suitable for signal-level switching and auxiliary power rail conditioning |
| trr | 4 ns - enables operation above 10 MHz switching frequencies with minimal switching loss |
| CJ | 4 pF at 0 V - minimizes capacitive loading in high-speed gate-drive and timing circuits |
| RθJA | 357 °C/W - requires careful PCB copper area design for thermal management at >100 mW dissipation |
| VF @ 10 mA | 0.82 V - reduces conduction loss in low-current logic-level clamping and protection paths |
| IR @ 75 V | 5 μA - ensures low leakage in high-impedance sensing and hold-up circuits |
Pinout & Package
Package: SOT-23 - three-terminal, surface-mount plastic package with gull-wing leads; moisture sensitivity level 1 (J-STD-020), RoHS and halogen-free compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (Pin 1) | Current entry terminal | Connected to lower-potential node in forward-biased switching path; marked by cathode band on package body |
| Cathode (Pin 2) | Current exit terminal | Connected to higher-potential node; serves as reference point for reverse voltage rating and clamping action |
| NC / Heat Sink (Pin 3) | No internal connection | Unused terminal; electrically isolated - not to be tied to ground or supply in layout |
Key Features
| Feature | Design Value |
|---|---|
| Fast reverse recovery (trr ≤ 4 ns) | Enables clean turn-off in high-frequency PWM circuits without tail current or ringing |
| Low junction capacitance (CJ ≤ 4 pF) | Minimizes signal distortion and timing skew in RF detector and clock buffer applications |
| Low forward voltage (VF ≤ 0.82 V @ 10 mA) | Reduces power loss in low-current bias networks and logic-level protection diodes |
| J-STD-020 Level 1 moisture sensitivity | Allows unlimited floor life before reflow; no baking required prior to assembly |
| UL 94 V-0 molding compound | Meets flammability safety requirements for enclosed industrial and consumer power supplies |
Applications
| SMPS Secondary-Side Snubber | USB-C Adapter Clamp Diode |
|---|---|
Use Scenario: Placed across transformer secondary winding to suppress voltage spikes during MOSFET turn-off in flyback converters. IC Role / Device Role / Timing Role: Fast-switching clamp diode absorbing inductive energy and limiting peak reverse voltage seen by output rectifier. Use Value: 4 ns trr and 100 V VRRM prevent snap-back failure and reduce EMI generation during transient events. | Use Scenario: Integrated into USB-C PD adapter front-end to protect CC line from overvoltage during plug insertion/removal. IC Role / Device Role / Timing Role: Low-capacitance signal-level clamping diode limiting CC pin voltage to safe levels without distorting PD communication waveform. Use Value: 4 pF CJ avoids bandwidth degradation; 0.82 V VF ensures precise clamping threshold near 3.3 V logic rails. |
| On-Board DC/DC Converter Flyback Diode | LED Driver Current Path Switch |
Use Scenario: Used as output rectifier in miniature 5 V → 3.3 V isolated DC/DC modules embedded in industrial controllers. IC Role / Device Role / Timing Role: High-speed unidirectional current path enabling efficient energy transfer during transformer reset phase. Use Value: 200 mA IF rating matches typical micro-power DC/DC load; SOT-23 footprint allows dense layout in space-constrained modules. | Use Scenario: Employed in constant-current LED driver IC feedback loop to enable/discharge current-sense capacitor during dimming cycles. IC Role / Device Role / Timing Role: Signal-path switch controlling charge/discharge timing of RC network governing PWM duty cycle. Use Value: 4 ns trr ensures accurate timing window control; low VF avoids offset error in precision current regulation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar switching diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MMBD4148-7-F (Diodes Inc.) | VRRM = 100 V, trr = 4 ns, VF = 0.85 V @ 10 mA, SOT-23, same marking code "5D" | Identical electrical specs; minor VF tolerance shift - acceptable in non-critical clamping roles | Select when dual-sourcing is required and JEDEC-compliant tape-and-reel packaging (7" reel) is preferred |
| BAT54C (ON Semiconductor) | VRRM = 30 V, trr = 5 ns, VF = 0.33 V @ 10 mA, dual common-cathode SOT-23 | Lower voltage rating limits use to ≤24 V systems; lower VF benefits low-voltage bias networks | Choose only for sub-30 V applications where ultra-low VF outweighs reduced reverse voltage margin |
Compared with MMBD4148SE RFG, MMBD4148-7-F offers identical switching performance and drop-in board compatibility, while BAT54C trades reverse voltage headroom for lower conduction loss in low-voltage signal switching - requiring redesign if replacing in 100 V-rated circuits.
Availability
MMBD4148SE RFG is available at Aetrix Electronics and suitable for switching mode power supplies, USB-C adapters, and on-board DC/DC converters requiring stable component supply, J-STD-020 Level 1 handling, and RoHS-compliant manufacturing.
Supply support for MMBD4148SE RFG 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 global industrial, computing, and consumer markets since 1979.
The MMBD4148SE RFG belongs to TSC's general-purpose high-speed switching diode product line, engineered for reliable performance in compact power conversion and signal integrity applications where fast recovery, low capacitance, and robust thermal behavior are critical.
FAQ
What is the maximum reverse voltage rating for MMBD4148SE RFG?
The MMBD4148SE RFG has a repetitive peak reverse voltage (VRRM) rating of 100 V. This means it can safely block up to 100 V in reverse bias under normal operating conditions. Exceeding this voltage may cause avalanche breakdown. The device also supports a non-repetitive peak forward surge current of 2 A for 1 μs, but reverse voltage must remain within the 100 V limit to ensure long-term reliability of MMBD4148SE RFG.
Does MMBD4148SE RFG have a specified reverse recovery time?
Yes, the MMBD4148SE RFG has a maximum reverse recovery time (trr) of 4 ns, measured under IF = 10 mA, IR = 1 mA, RL = 100 Ω, and VR = 6 V. This fast recovery characteristic makes MMBD4148SE RFG suitable for high-frequency switching applications such as DC/DC converters and snubber circuits where minimal switching loss and reduced EMI are essential.
What is the forward voltage of MMBD4148SE RFG at 10 mA?
The forward voltage (VF) of MMBD4148SE RFG is guaranteed to be no more than 0.82 V when conducting 10 mA at 25 °C junction temperature. This low VF contributes to reduced conduction losses in low-current signal paths and clamping applications. Actual VF may vary slightly with temperature and current, but MMBD4148SE RFG maintains consistent performance across its –55 °C to +150 °C operating range.
Is MMBD4148SE RFG RoHS and halogen-free compliant?
Yes, MMBD4148SE RFG is fully RoHS compliant and halogen-free per IEC 61249-2-21. It contains no lead, mercury, cadmium, hexavalent chromium, polybrominated biphenyls (PBB), or polybrominated diphenyl ethers (PBDE). The halogen-free status ensures safer end-of-life processing and meets stringent environmental requirements for industrial and consumer electronics using MMBD4148SE RFG.
What is the thermal resistance of MMBD4148SE RFG?
The junction-to-ambient thermal resistance (RθJA) of MMBD4148SE RFG is 357 °C/W under standard JEDEC test conditions. This value assumes a minimal PCB copper pad (single-layer, 1 cm²). To maintain safe junction temperature, designers should increase copper area or add thermal vias when power dissipation exceeds ~100 mW. Proper thermal design is essential for sustained reliability of MMBD4148SE RFG in continuous-duty applications.
MMBD4148SE RFG Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Series:
- -
- Package/Case:
- TO-236-3, SC-59, SOT-23-3
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Diode Configuration:
- 1 Pair Series Connection
- Technology:
- Standard
- Voltage - DC Reverse (Vr) (Max):
- 100 V
- Current - Average Rectified (Io) (per Diode):
- 200mA
- Voltage - Forward (Vf) (Max) @ If:
- 1 V @ 10 mA
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- 4 ns
- Current - Reverse Leakage @ Vr:
- 5 µA @ 75 V
- Operating Temperature - Junction:
- -55°C ~ 150°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23
MMBD4148SE RFG FAQ
1.How can I place an order for MMBD4148SE RFG through Aetrix?
Please submit a Request for Quotation (RFQ) for MMBD4148SE RFG 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 MMBD4148SE RFG reliable?
The price and inventory of MMBD4148SE RFG are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MMBD4148SE RFG is usually 5 days.
3.What payment methods are accepted for MMBD4148SE RFG?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MMBD4148SE RFG transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MMBD4148SE RFG?
MMBD4148SE RFG orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MMBD4148SE RFG 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 MMBD4148SE RFG?
For technical support, including MMBD4148SE RFG datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MMBD4148SE RFG requirements.
6.How does Aetrix verify that MMBD4148SE RFG is sourced from the original manufacturer or authorized distributors?
All MMBD4148SE RFG 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 MMBD4148SE RFG meets industry standards.
7.What is the process for return or replacement of MMBD4148SE RFG?
All MMBD4148SE RFG units undergo pre-shipment inspection (PSI). If there is an issue with MMBD4148SE RFG, 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 MMBD4148SE RFG part is unused and in its original packaging.
Return procedure for MMBD4148SE RFG:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MMBD4148SE RFG Tags
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BAV99-7-F
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BAT54C-7-F
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BAV99,215
Nexperia USA Inc.
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BAT54SLT1G
onsemi
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BAV70LT1G
onsemi
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BAT54CLT1G
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BAT54S-7-F
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BAV99LT1G
onsemi
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BAT54S,215
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MMBD1503-TP
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