My Inquiry
My Account
Taiwan Semiconductor Corporation SRT12 A1G
- Part No.:
- SRT12 A1G
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Diodes
- Package:
- T-18, Axial
- Datasheet:
-
SRT12 A1G.pdf
- Description:
- DIODE SCHOTTKY 20V 1A TS-1
- Quantity:
- Payment:
- Shipping:
Inventory:7,758
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
SRT12 A1G from Taiwan Semiconductor is a 1 A, 20 V Schottky barrier rectifier in TS-1 package, featuring low forward voltage (0.55 V at 1 A, 25°C), 25 A surge capability, and AEC-Q101 qualification. It serves as primary output rectifier in compact DC/DC converters for automotive infotainment power supplies.
For engineers reviewing the SRT12 A1G datasheet, SRT12 A1G pinout, SRT12 A1G application, or SRT12 A1G equivalent, key selection criteria include its 20 V VRRM, 125°C max junction temperature, TS-1 thermal resistance of 50°C/W, and cathode-band polarity marking-critical for high-efficiency, space-constrained 12 V rail designs.
Technical Context
The SRT12 A1G implements a single-die Schottky structure with guard ring overvoltage protection, enabling robust operation under transient conditions in automotive-grade power conversion. Its 0.55 V forward drop at 1 A directly reduces conduction loss versus silicon diodes, while 25 A IFSM supports peak-load handling in flyback and buck topologies.
Thermally, the TS-1 package delivers 50°C/W RθJA, and the device operates across –55°C to +125°C junction range. Reverse leakage remains ≤500 µA at 25°C and ≤10 mA at 100°C-key for standby efficiency in always-on modules.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 20 V - Maximum reverse blocking voltage; defines safe operating limit in 12 V input circuits. |
| IF | 1 A continuous - Rated average forward current; supports sustained 12 V/1 A output rails. |
| VF | 0.55 V @ 1 A, 25°C - Low conduction loss enables >92% efficiency in 5–12 V DC/DC stages. |
| IFSM | 25 A @ 8.3 ms - Handles inrush and fault currents without failure in adapter and SMPS applications. |
| TJ max | 125°C - Enables use in under-hood automotive environments without derating below 1 A. |
| RθJA | 50°C/W - Allows thermal design on standard FR-4 PCBs with minimal copper area for cost-sensitive layouts. |
| CJ | 110 pF @ 1 MHz, 4 V - Low junction capacitance minimizes switching noise and EMI in high-frequency converters. |
Pinout & Package
TS-1 package: surface-mount, single-anode/single-cathode configuration with cathode band marking; 0.200 g mass; pure tin-plated leads compliant with J-STD-002 solderability.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Input current entry point | Connected to transformer secondary or switch node; requires thermal relief pad for heat dissipation. |
| Cathode | Output current exit point | Marked by visible band; ties to output filter capacitor and load return; critical for polarity-sensitive layout. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive power modules requiring reliability under temperature cycling and vibration stress. |
| Guard ring structure | Prevents edge breakdown during voltage transients, improving long-term stability in noisy 12 V systems. |
| RoHS & halogen-free | Complies with IEC 61249-2-21; eliminates brominated flame retardants for safer end-of-life processing. |
| JESD 201 Class 2 whisker resistance | Ensures tin-plated terminals remain solderable after storage and thermal cycling, avoiding field failures. |
Applications
| Automotive Infotainment Power Supply | USB-C PD Adapter Secondary Rectification |
|---|---|
Use Scenario: 12 V input DC/DC converter supplying 5 V/3.3 V rails to head unit processors and displays. IC Role / Device Role / Timing Role: Output rectifier in synchronous or asynchronous buck converter stage. Use Value: 0.55 V VF reduces power loss by ~0.45 W vs. 1 V Si diode, lowering thermal load in sealed enclosures. | Use Scenario: Secondary-side rectification in 20–30 W USB-C PD wall adapters with 5–20 V output. IC Role / Device Role / Timing Role: Unidirectional current path after transformer isolation; handles 1 A continuous output. Use Value: 25 A IFSM withstands startup surges and short-circuit events without degradation. |
| Industrial IoT Sensor Node Power | Point-of-Load Regulator in Telematics Module |
Use Scenario: Compact 3.3 V supply derived from 12 V vehicle battery via isolated flyback converter. IC Role / Device Role / Timing Role: High-frequency rectifier operating at 100–500 kHz switching frequency. Use Value: 110 pF CJ limits capacitive coupling noise, preserving signal integrity in analog sensor front-ends. | Use Scenario: Local 1.8 V or 2.5 V rail generation for GPS/GNSS receivers and cellular modems. IC Role / Device Role / Timing Role: Final-stage rectifier before low-ESR ceramic output capacitor. Use Value: TS-1 package footprint (3.5 × 1.6 mm) fits tight board areas while delivering 50°C/W thermal performance. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Schottky rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SB120-E3/54 (Vishay) | 20 V VRRM, 1 A IF, 0.52 V VF, DO-41 package, no AEC-Q101 | Through-hole mounting only; lacks automotive qualification and TS-1 thermal performance | Use only in non-automotive, non-space-constrained designs where leaded assembly is preferred. |
| SS12 (ON Semiconductor) | 20 V VRRM, 1 A IF, 0.5 V VF, SMA package, no AEC-Q101 | SMA footprint differs; higher RθJA (~70°C/W); not qualified for automotive temperature cycling | Select when lowest possible VF is prioritized over qualification and thermal resistance. |
Compared with SB120-E3/54 and SS12, the SRT12 A1G uniquely combines AEC-Q101 qualification, TS-1 surface-mount compatibility, and 50°C/W thermal resistance-making it the only choice for thermally demanding, automotive-compliant 1 A rectification where board space and reliability are co-constrained.
Availability
SRT12 A1G is available at Aetrix Electronics and suitable for automotive infotainment power supplies, USB-C PD adapters, and industrial IoT sensor node power conversion requiring stable component supply and AEC-Q101 compliance.
Supply support for SRT12 A1G 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, MOSFETs, and TVS diodes, with global distribution and automotive qualification capabilities.
The SRT12 A1G belongs to TSC's AEC-Q101-qualified Schottky rectifier family, engineered specifically for high-reliability, high-efficiency DC/DC conversion in automotive and industrial power systems.
FAQ
What is the maximum junction temperature rating for the SRT12 A1G?
The SRT12 A1G has a maximum junction temperature (TJ) of +125°C, validated per its AEC-Q101 qualification. This allows uninterrupted operation in under-dash automotive environments where ambient temperatures reach 85°C and power dissipation must be managed within thermal limits. The SRT12 A1G maintains full electrical specifications up to this temperature, ensuring reliability in telematics and infotainment modules.
Is the SRT12 A1G pin-compatible with other TS-1 Schottky rectifiers?
Yes-the SRT12 A1G uses the standardized TS-1 package with anode and cathode terminals in fixed positions per JEDEC outline. All TS-1 rectifiers, including SRT13 A1G through SRT115 A1G, share identical mechanical dimensions and terminal locations. However, electrical parameters (e.g., VRRM, VF) differ across the series, so direct substitution requires verification of voltage and thermal requirements for the SRT12 A1G.
Does the SRT12 A1G meet RoHS and halogen-free standards?
Yes-the SRT12 A1G is RoHS compliant and halogen-free per IEC 61249-2-21. Its molding compound contains no brominated flame retardants, and its pure tin-plated leads satisfy J-STD-002 solderability requirements. These attributes are confirmed in TSC's official documentation for the SRT12 A1G and support compliance in EU and global environmental regulations.
What is the reverse leakage current specification for the SRT12 A1G at elevated temperature?
At 100°C junction temperature, the SRT12 A1G exhibits a maximum reverse leakage current (IR) of 10 mA under rated VRRM. At 25°C, leakage is limited to 500 µA. This behavior is consistent across the SRT12–SRT14 group and ensures stable standby performance in always-on automotive modules where reverse conduction must remain predictable across temperature.
How does the guard ring feature improve reliability of the SRT12 A1G?
The guard ring in the SRT12 A1G prevents premature edge breakdown during voltage transients, such as load dump or ISO 7637-2 pulses. By controlling electric field distribution at the die periphery, it extends operational life under repetitive overvoltage stress-particularly valuable in automotive 12 V systems where the SRT12 A1G serves as a primary rectifier in unregulated input stages.
SRT12 A1G Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Series:
- -
- Package/Case:
- T-18, Axial
- Packaging:
- Tape & Box (TB)
- Product Status:
- Discontinued at Digi-Key
- Technology:
- Schottky
- Voltage - DC Reverse (Vr) (Max):
- 20 V
- Current - Average Rectified (Io):
- 1A
- Voltage - Forward (Vf) (Max) @ If:
- 550 mV @ 1 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:
- TS-1
- Operating Temperature - Junction:
- -55°C ~ 125°C
SRT12 A1G FAQ
1.How can I place an order for SRT12 A1G through Aetrix?
Please submit a Request for Quotation (RFQ) for SRT12 A1G 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 SRT12 A1G reliable?
The price and inventory of SRT12 A1G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SRT12 A1G is usually 5 days.
3.What payment methods are accepted for SRT12 A1G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SRT12 A1G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SRT12 A1G?
SRT12 A1G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SRT12 A1G 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 SRT12 A1G?
For technical support, including SRT12 A1G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SRT12 A1G requirements.
6.How does Aetrix verify that SRT12 A1G is sourced from the original manufacturer or authorized distributors?
All SRT12 A1G 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 SRT12 A1G meets industry standards.
7.What is the process for return or replacement of SRT12 A1G?
All SRT12 A1G units undergo pre-shipment inspection (PSI). If there is an issue with SRT12 A1G, 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 SRT12 A1G part is unused and in its original packaging.
Return procedure for SRT12 A1G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SRT12 A1G 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…
