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Taiwan Semiconductor Corporation RSFBLH
- Part No.:
- RSFBLH
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Diodes
- Package:
- SOD-123
- Datasheet:
-
RSFBLH.pdf
- Description:
- 150NS, 0.5A, 100V, FAST RECOVERY
- Quantity:
- Payment:
- Shipping:
Inventory:8,783
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Product details
Overview
RSFBLH from Taiwan Semiconductor is a 0.5A, 100V fast recovery surface-mount rectifier diode in Sub SMA package, featuring AEC-Q101 qualification, glass passivated junction, and 150 ns reverse recovery time. It serves as a primary output rectifier in automotive DC-DC converters and snubber circuits where high switching efficiency and thermal reliability are required.
For engineers reviewing the RSFBLH datasheet, RSFBLH pinout, RSFBLH application, or RSFBLH equivalent, key selection criteria include its 100V VRRM, 10A IFSM, JESD201 Class 2 whisker resistance, moisture sensitivity level 1, and compliance with AEC-Q101 for under-hood automotive use.
Technical Context
The RSFBLH is a single-die, unidirectional silicon rectifier optimized for fast switching in power conversion stages. Its metallurgically bonded construction supports continuous operation up to +150°C junction temperature, while the glass-passivated junction ensures stable leakage performance across temperature.
Designed for automated SMT assembly, the device uses matte tin-plated leads compliant with J-STD-002 solderability and UL 94V-0 molding compound. Polarity is marked by a cathode band, and its Sub SMA footprint aligns with industry-standard PCB pad layouts for high-volume production.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 100 V - Maximum repetitive reverse voltage before breakdown; defines safe operating range in 12–24 V automotive systems |
| IF | 0.5 A - Continuous forward current rating; suitable for low-power auxiliary rails and LED driver outputs |
| IFSM | 10 A - Peak surge current tolerance for 8.3 ms half-sine; handles cold-crank transients in vehicle power systems |
| trr | 150 ns - Reverse recovery time at IF=0.5 A, IR=1.0 A; enables >100 kHz switching without excessive switching loss |
| TJ max | +150 °C - Maximum junction temperature; supports placement near heat-generating components in engine control units |
| RθJA | 150 °C/W - Junction-to-ambient thermal resistance; requires minimal copper area for thermal management in compact layouts |
Pinout & Package
Package: Sub SMA - Surface-mount, molded plastic case with matte tin-plated leads; polarity indicated by cathode band; meets UL 94V-0 and JESD201 Class 2 whisker requirements.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (lead without band) | Forward current entry | Connected to lower-potential side of circuit; must be routed with adequate trace width for 0.5 A continuous conduction |
| Cathode (lead with band) | Forward current exit / reverse blocking terminal | Connected to higher-potential node; functions as return path in rectification and clamping configurations |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing per stress test plan |
| Glass passivated junction | Prevents surface contamination and leakage drift under humid or high-bias conditions in automotive environments |
| Moisture sensitivity level 1 | No dry-pack or baking required prior to reflow; compatible with standard SMT lines without process modification |
| Fast recovery (150 ns) | Reduces reverse recovery charge (Qrr) to <15 nC, minimizing switching losses in high-frequency DC-DC topologies |
Applications
| Automotive DC-DC Converter | LED Headlamp Driver |
|---|---|
Use Scenario: Step-down converter supplying 5 V/3.3 V logic rails from 12 V battery in body control modules. IC Role / Device Role / Timing Role: Output rectifier in synchronous or asynchronous buck topology. Use Value: 150 ns trr and 100 V VRRM enable efficient operation at 200–500 kHz with low EMI generation. | Use Scenario: Constant-current LED driver for daytime running lights (DRL) and position lamps. IC Role / Device Role / Timing Role: Freewheeling diode in boost or buck-boost LED controller feedback loop. Use Value: AEC-Q101 qualification and +150°C TJ max ensure long-term stability in sealed headlamp enclosures. |
| Snubber Circuit | Engine Control Unit (ECU) Power Supply |
Use Scenario: RCD snubber across MOSFET drain-source in ignition coil drivers. IC Role / Device Role / Timing Role: Fast-recovery clamp diode absorbing inductive kickback energy. Use Value: 10 A IFSM withstands transient spikes during coil discharge; 150 ns trr prevents snap-off oscillation. | Use Scenario: Input rectification stage of isolated flyback supply powering MCU, sensors, and CAN transceivers. IC Role / Device Role / Timing Role: Primary-side AC input rectifier feeding bulk capacitor. Use Value: Sub SMA package allows dense layout; moisture level 1 eliminates pre-reflow handling constraints in high-mix ECU production. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar fast recovery rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STTH1R06 | Same 100 V VRRM, but 1.0 A IF and 75 ns trr; TO-277 package (larger footprint) | Better suited for higher-current, higher-frequency SMPS where space permits larger package | Select STTH1R06 only if board layout accommodates TO-277 and system requires sub-100 ns recovery |
| ON Semi MUR105 | 100 V VRRM, 1.0 A IF, 75 ns trr; SMA package (not Sub SMA), slightly taller profile | Higher current capability but less automotive qualification depth; no AEC-Q101 documentation publicly available | Choose MUR105 for cost-sensitive industrial supplies where AEC-Q101 is not mandated |
Compared with STTH1R06 and MUR105, the RSFBLH offers AEC-Q101 validation and Sub SMA footprint-critical for space-constrained, thermally demanding automotive modules-while trading off some speed and current rating for qualification assurance and manufacturability.
Availability
RSFBLH is available at Aetrix Electronics and suitable for automotive DC-DC converters, LED lighting drivers, and snubber circuits requiring stable component supply across extended temperature ranges and high-reliability production cycles.
Supply support for RSFBLH 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 devices, rectifiers, and protection components.
The RSFBLH belongs to TSC's RSF-series fast recovery rectifier family, engineered specifically for AEC-Q101-compliant automotive power conversion and clamping applications where reliability under thermal and mechanical stress is non-negotiable.
FAQ
What is the maximum junction temperature rating for RSFBLH?
The RSFBLH has a maximum junction temperature (TJ) of +150°C, verified per AEC-Q101 stress testing. This allows reliable operation in under-hood environments such as engine control units and lighting modules where ambient temperatures exceed 105°C. The device's glass passivated junction and metallurgically bonded construction maintain parameter stability up to this limit.
Is RSFBLH pin-compatible with other Sub SMA rectifiers like RSFALH or RSFDLH?
Yes, RSFBLH shares identical Sub SMA package dimensions, lead pitch, and cathode band polarity marking with RSFALH (50 V), RSFDLH (200 V), and all RSF_x_LH variants. However, VRRM, trr, and leakage current differ per variant-RSFBLH is rated for 100 V and 150 ns recovery, so electrical substitution requires verification against circuit voltage and switching requirements.
Does RSFBLH require baking before reflow soldering?
No, RSFBLH has a moisture sensitivity level (MSL) of 1 per J-STD-020, meaning it can be stored indefinitely at ambient conditions and placed directly into reflow without baking or dry-pack handling. This simplifies SMT line integration and reduces risk of popcorning during lead-free reflow profiles used in automotive electronics manufacturing.
What is the reverse recovery time (trr) specification for RSFBLH, and under what test conditions?
The RSFBLH reverse recovery time is specified as 150 ns maximum, measured at IF = 0.5 A, IR = 1.0 A, and Irr = 0.25 A, per the test circuit in Figure 6 of the official datasheet. This value reflects real-world switching behavior in DC-DC converters and snubbers, enabling accurate loss modeling at frequencies up to 500 kHz.
How does RSFBLH meet automotive reliability standards?
RSFBLH is fully AEC-Q101 qualified, having passed stress tests including high-temperature reverse bias (HTRB), temperature cycling, and unbiased highly accelerated stress testing (uHAST). Its construction-glass passivated junction, JESD201 Class 2 whisker-resistant leads, and UL 94V-0 mold compound-ensures robustness in automotive power systems exposed to vibration, thermal shock, and humidity.
RSFBLH Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Series:
- -
- Package/Case:
- SOD-123
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Not For New Designs
- Technology:
- Standard
- Voltage - DC Reverse (Vr) (Max):
- 100 V
- Current - Average Rectified (Io):
- 500mA
- Voltage - Forward (Vf) (Max) @ If:
- 1.3 V @ 500 mA
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- 150 ns
- Current - Reverse Leakage @ Vr:
- 5 µA @ 100 V
- Capacitance @ Vr, F:
- 4pF @ 4V, 1MHz
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- Sub SMA
- Operating Temperature - Junction:
- -55°C ~ 150°C
RSFBLH FAQ
1.How can I place an order for RSFBLH through Aetrix?
Please submit a Request for Quotation (RFQ) for RSFBLH 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 RSFBLH reliable?
The price and inventory of RSFBLH are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for RSFBLH is usually 5 days.
3.What payment methods are accepted for RSFBLH?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for RSFBLH transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for RSFBLH?
RSFBLH orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your RSFBLH 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 RSFBLH?
For technical support, including RSFBLH datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your RSFBLH requirements.
6.How does Aetrix verify that RSFBLH is sourced from the original manufacturer or authorized distributors?
All RSFBLH 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 RSFBLH meets industry standards.
7.What is the process for return or replacement of RSFBLH?
All RSFBLH units undergo pre-shipment inspection (PSI). If there is an issue with RSFBLH, 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 RSFBLH part is unused and in its original packaging.
Return procedure for RSFBLH:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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