My Inquiry
My Account
Taiwan Semiconductor Corporation SR1202 B0G
- Part No.:
- SR1202 B0G
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Diodes
- Package:
- DO-201AD, Axial
- Datasheet:
-
SR1202 B0G.pdf
- Description:
- DIODE SCHOTTKY 20V 12A DO201AD
- Quantity:
- Payment:
- Shipping:
Inventory:3,138
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
SR1202 B0G from Taiwan Semiconductor is a 12A, 20V Schottky barrier rectifier in DO-201AD package, featuring low forward voltage (0.55 V at 12 A), 320 A surge capability, and AEC-Q101 qualification for automotive-grade reliability. It serves as primary output rectification in high-efficiency DC-DC converters.
For engineers reviewing the SR1202 B0G datasheet, SR1202 B0G pinout, SR1202 B0G application, or SR1202 B0G equivalent, key selection factors include its 20 V repetitive peak reverse voltage, 150 °C maximum junction temperature, DO-201AD thermal resistance (RθJL = 3 °C/W), and cathode-band polarity marking.
Technical Context
This discrete Schottky diode uses a single-die construction with guard ring structure to enhance overvoltage robustness and suppress avalanche-induced failure. Its low VF and high IFSM support high-frequency switching topologies where conduction loss and transient resilience are critical.
The device operates across -55 °C to +150 °C junction range and achieves 24 °C/W junction-to-ambient thermal resistance in standard PCB mounting. Pure tin-plated leads meet J-STD-002 solderability and JESD201 Class 2 whisker resistance requirements.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| IF (Continuous) | 12 A - Sustains full-rated DC output current without derating at ≤75 °C ambient on standard FR-4 |
| VRRM | 20 V - Maximum repetitive reverse blocking voltage; sets upper limit for secondary-side voltage stress in flyback/buck designs |
| IFSM (t=8.3ms) | 320 A - Withstands short-duration inrush surges common during power-up or load transients |
| VF @ 12A, 25°C | 0.55 V - Directly reduces conduction loss (Pcond ≈ 6.6 W), improving system efficiency vs. silicon diodes |
| RθJL | 3 °C/W - Enables efficient heat transfer to PCB copper, supporting compact thermal design without heatsink |
| TJ max | +150 °C - Allows operation in under-hood automotive environments and sealed industrial enclosures |
Pinout & Package
DO-201AD axial-leaded package with cathode band indicating terminal polarity; body length 9.5 mm, lead diameter 0.76 mm, weight ≈1.10 g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (unmarked end) | Current entry point during forward conduction | Connected to lower-potential node (e.g., transformer secondary center-tap or buck switch node) |
| Cathode (banded end) | Current exit point during forward conduction | Connected to output rail; polarity marking prevents reverse installation in automated assembly |
Key Features
| Feature | Design Value |
|---|---|
| Guard ring structure | Prevents edge breakdown under transient overvoltage, increasing reliability in unclamped SMPS outputs |
| AEC-Q101 qualified (B0G variant) | Validated for automotive power modules requiring zero-defect field performance and extended temperature cycling |
| RoHS & halogen-free | Complies with IEC 61249-2-21 and EU RoHS Directive, enabling use in green electronics manufacturing |
| Low RθJA (24 °C/W) | Permits higher power density in space-constrained adapters without forced airflow or thermal vias |
Applications
| Automotive DC-DC Converters | Industrial SMPS Outputs |
|---|---|
Use Scenario: 12 V to 5 V/3.3 V point-of-load conversion in engine control units and ADAS domain controllers. IC Role / Device Role / Timing Role: Output rectifier replacing synchronous MOSFETs where cost and EMI simplicity are prioritized. Use Value: 0.55 V VF minimizes dropout loss while AEC-Q101 qualification ensures 15-year operational life under thermal cycling. | Use Scenario: Secondary-side rectification in 200–500 W open-frame industrial power supplies. IC Role / Device Role / Timing Role: High-current freewheeling path in continuous conduction mode (CCM) LLC resonant converters. Use Value: 320 A IFSM withstands startup surges; DO-201AD package allows manual rework and wave-solder compatibility. |
| USB-C PD Adapters | Telecom DC-DC Modules |
Use Scenario: 20 V output rectification in compact 65 W USB-C power adapters. IC Role / Device Role / Timing Role: Primary output diode in quasi-resonant flyback topology operating at 65–130 kHz. Use Value: Low VF improves efficiency above 90%, meeting Level VI and CoC Tier 2 energy standards without complex sync control. | Use Scenario: Isolated 48 V to 12 V conversion in telecom shelf power systems. IC Role / Device Role / Timing Role: Bulk rectifier handling steady-state 12 A load plus 200% overload for 10 s. Use Value: 150 °C TJ max and 3 °C/W RθJL enable stable operation at 70 °C ambient with natural convection cooling. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Schottky rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Vishay VS-12BQ020TR-M3 | Same 20 V VRRM and 12 A IF, but TO-277 package (surface-mount); VF = 0.49 V @ 12 A | Requires SMT reflow process and board redesign; unsuitable for through-hole legacy adapters | Select when upgrading to automated assembly and need marginally lower VF |
| ON Semiconductor SB1220-E3/54 | 20 V VRRM, 12 A IF, DO-201AD package, but not AEC-Q101 qualified; VF = 0.57 V @ 12 A | Lacks automotive qualification; IR = 1 mA @ 20 V (vs. 500 µA for SR1202 B0G) | Select for cost-sensitive industrial adapters where AEC-Q101 is unnecessary |
Compared with VS-12BQ020TR-M3 and SB1220-E3/54, SR1202 B0G uniquely combines AEC-Q101 qualification, DO-201AD through-hole compatibility, and sub-0.55 V forward drop-making it optimal for automotive and high-reliability industrial replacements where leaded assembly remains in use.
Availability
SR1202 B0G is available at Aetrix Electronics and suitable for automotive DC-DC converters, industrial SMPS outputs, and USB-C PD adapters requiring stable component supply and long-term lifecycle assurance.
Supply support for SR1202 B0G 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 SR1202 B0G belongs to TSC's AEC-Q101-qualified Schottky rectifier family, engineered specifically for high-current, low-VF secondary-side rectification in harsh-environment power conversion systems.
FAQ
What is the maximum junction temperature rating for SR1202 B0G?
The SR1202 B0G has a maximum junction temperature (TJ) of +150 °C in DC forward mode. This rating enables reliable operation in under-hood automotive applications and sealed industrial enclosures where ambient temperatures exceed 85 °C. The device must be mounted on PCB copper area per TSC's recommended footprint to maintain thermal limits. Derating curves in the SR1202 B0G datasheet define allowable current versus ambient temperature.
Does SR1202 B0G meet automotive qualification standards?
Yes, SR1202 B0G is AEC-Q101 qualified, as indicated by the "B0G" suffix per TSC's ordering nomenclature. This certification covers stress tests including HTGB, HTRB, TCT, and mechanical shock, validating suitability for automotive power modules such as body control units and infotainment DC-DC stages. Full test reports are available upon request from Taiwan Semiconductor.
What is the forward voltage of SR1202 B0G at rated current?
The SR1202 B0G exhibits a maximum forward voltage (VF) of 0.55 V at 12 A and 25 °C junction temperature, measured under pulsed conditions (PW = 0.3 ms). At 100 °C junction temperature, VF increases to approximately 0.48 V due to negative temperature coefficient-critical for thermal stability in high-power designs using SR1202 B0G.
Is SR1202 B0G halogen-free and RoHS compliant?
Yes, SR1202 B0G complies with both RoHS Directive 2011/65/EU and IEC 61249-2-21 halogen-free requirements. The molding compound contains no brominated flame retardants or chlorine-based additives, and the pure tin-plated leads meet J-STD-002 solderability standards. Certificate of Compliance is provided with bulk shipments of SR1202 B0G.
What packaging options are available for SR1202 B0G?
SR1202 B0G is supplied in 500-piece ammo boxes (standard for B0G suffix), as specified in TSC's ordering information. Tape-and-reel (1,250 pcs) is available under alternate part codes (e.g., SR1202H B0G). The DO-201AD package features axial leads with cathode band marking and meets UL 94V-0 flammability rating-ensuring compatibility with wave soldering and manual rework processes used for SR1202 B0G.
SR1202 B0G Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Series:
- -
- Package/Case:
- DO-201AD, Axial
- Packaging:
- Bulk
- Product Status:
- Discontinued at Digi-Key
- Technology:
- Schottky
- Voltage - DC Reverse (Vr) (Max):
- 20 V
- Current - Average Rectified (Io):
- 12A
- Voltage - Forward (Vf) (Max) @ If:
- 550 mV @ 12 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- -
- Current - Reverse Leakage @ Vr:
- 500 µA @ 20 V
- Capacitance @ Vr, F:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- DO-201AD
- Operating Temperature - Junction:
- -50°C ~ 150°C
SR1202 B0G FAQ
1.How can I place an order for SR1202 B0G through Aetrix?
Please submit a Request for Quotation (RFQ) for SR1202 B0G 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 SR1202 B0G reliable?
The price and inventory of SR1202 B0G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SR1202 B0G is usually 5 days.
3.What payment methods are accepted for SR1202 B0G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SR1202 B0G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SR1202 B0G?
SR1202 B0G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SR1202 B0G 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 SR1202 B0G?
For technical support, including SR1202 B0G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SR1202 B0G requirements.
6.How does Aetrix verify that SR1202 B0G is sourced from the original manufacturer or authorized distributors?
All SR1202 B0G 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 SR1202 B0G meets industry standards.
7.What is the process for return or replacement of SR1202 B0G?
All SR1202 B0G units undergo pre-shipment inspection (PSI). If there is an issue with SR1202 B0G, 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 SR1202 B0G part is unused and in its original packaging.
Return procedure for SR1202 B0G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SR1202 B0G Tags
-
1N4448X-TP
Micro Commercial Co
-
1N4148WX-TP
Micro Commercial Co
-
1N4148TR
onsemi
-
MMSD4148T1G
onsemi
-
MMBD914LT3G
onsemi
-
BAS16HT1G
onsemi
-
1N914BWT
onsemi
-
BAS21LT1G
onsemi
-
LL4148
onsemi
-
BAS16LT1G
onsemi
-
MMSD914T1G
onsemi
-
BAV21W-7-F
Diodes Incorporated
Tech Hub
Counterfeit components can hide behind convincing markings and passing basic function tests. This engineering reference covers source traceability, external inspection, X-ray, XRF, electrical testing, …
A practical engineering and sourcing framework covering lifecycle verification, lifetime-buy calculations, replacement qualification, supplier checks and counterfeit-risk controls.
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
