My Inquiry
My Account
Taiwan Semiconductor Corporation SR4030PT
- Part No.:
- SR4030PT
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Diode Arrays
- Package:
- TO-247-3
- Datasheet:
-
SR4030PT.pdf
- Description:
- DIODE ARR SCHOTT 30V 40A TO247AD
- Quantity:
- Payment:
- Shipping:
Inventory:7,332
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
SR4030PT from Taiwan Semiconductor is a 40A, 30V AEC-Q101-qualified Schottky barrier rectifier in TO-247AD (TO-3P) package, featuring 0.55V forward voltage at 20A/25°C, 400A surge capability, and guard ring overvoltage protection-used in automotive-grade DC-DC converters and SMPS secondary-side rectification.
For engineers reviewing the SR4030PT datasheet, SR4030PT pinout, SR4030PT application, or SR4030PT equivalent, key selection criteria include repetitive peak reverse voltage (30 V), junction-to-case thermal resistance (1.2 °C/W), TJ max rating (150 °C), and UL recognition (E-326243) for safety-critical power systems.
Technical Context
This dual-die Schottky rectifier operates with low conduction loss due to its metal-semiconductor junction, enabling high-efficiency operation in high-frequency switching topologies. Its guard ring structure enhances ruggedness against transient overvoltage events common in automotive load-dump conditions.
The device supports continuous forward current of 40 A at case temperature up to 125 °C (derated to zero at 150 °C), with thermal performance optimized by low RθJC (1.2 °C/W) and matte tin-plated leads compliant with J-STD-002 solderability standards.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 30 V - Maximum repetitive reverse blocking voltage; defines safe operating limit in DC-DC flyback or buck converter output stage |
| IF | 40 A - Continuous forward current rating at TC = 125 °C; determines minimum heatsink sizing for sustained power delivery |
| IFSM | 400 A - Non-repetitive surge current (8.3 ms half-sine); withstands inrush and fault transients without failure |
| VF | 0.55 V @ 20 A, 25 °C - Low forward drop reduces conduction loss and improves system efficiency vs. silicon diodes |
| RθJC | 1.2 °C/W - Junction-to-case thermal resistance; enables precise thermal modeling for mechanical layout and cooling design |
| TJ max | 150 °C - Maximum junction temperature; allows operation in under-hood automotive environments with margin |
| UL File # | E-326243 - Recognized per UL 60950-1/62368-1; satisfies safety certification requirements for end equipment |
Pinout & Package
Package: TO-247AD (TO-3P), 3-terminal through-hole package with isolated mounting tab (cathode-connected tab), matte tin-plated leads, UL 94V-0 molding compound, and polarity marked on device body.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (Lead 1) | Input terminal for forward conduction path | Connected to switching node or transformer secondary; carries full load current during on-state |
| Cathode (Lead 2) | Output terminal for forward conduction path | Connected to output capacitor or filter inductor; referenced to system ground in common-cathode configuration |
| Mounting Tab (Cathode) | Thermal and electrical cathode connection | Electrically tied to cathode; provides primary heat path to heatsink; requires insulating washer if isolated mounting needed |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive applications including engine control, ADAS power supplies, and infotainment systems |
| Guard ring structure | Improves avalanche ruggedness and prevents premature edge breakdown during voltage transients |
| Dual-die construction | Enables parallel conduction paths within single package, improving current sharing and thermal distribution |
| Halogen-free & RoHS | Complies with IEC 61249-2-21 and EU RoHS Directive; suitable for environmentally regulated industrial and automotive production |
| JESD201 Class 2 whisker resistance | Ensures long-term reliability of tin-plated leads under thermal cycling and humidity stress |
Applications
| Automotive DC-DC Converters | Industrial SMPS Secondary Rectification |
|---|---|
Use Scenario: High-efficiency 12 V → 5 V/3.3 V conversion in vehicle body control modules and telematics units. IC Role / Device Role / Timing Role: Primary synchronous rectifier replacing MOSFETs in secondary-side synchronous topology; conducts during low-side switch conduction phase. Use Value: 0.55 V VF minimizes conduction loss at 20–40 A loads, directly improving converter efficiency by ~1.2% over comparable 45 V Schottkys. | Use Scenario: Output rectification in 48 V input telecom and server PSUs operating at 200–500 kHz switching frequency. IC Role / Device Role / Timing Role: Freewheeling diode in active-clamp forward or LLC resonant converter secondary stage. Use Value: 400 A IFSM withstands startup surges and short-circuit recovery without degradation, supporting robust OCP response. |
| Monitor Power Supplies | TV Backlight Inverters |
Use Scenario: Auxiliary 19 V/24 V power rail generation in LCD monitor mainboards with tight thermal envelopes. IC Role / Device Role / Timing Role: Output rectifier in quasi-resonant flyback converter delivering regulated bias voltage to gate drivers and logic. Use Value: TO-247AD package with 1.2 °C/W RθJC enables direct heatsink mounting, reducing board-level thermal resistance by >40% vs. D2PAK alternatives. | Use Scenario: High-current rectification in CCFL or LED backlight inverter outputs driving cold-cathode lamps or local dimming zones. IC Role / Device Role / Timing Role: Clamp and freewheel diode in resonant half-bridge inverter output stage handling pulsed 30–60 V, 2–5 A loads. Use Value: Guard ring protection prevents failure during lamp ignition transients exceeding 2× VRRM, extending field lifetime in consumer displays. |
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-40CPH03-M3 | 30 V VRRM, 40 A IF, TO-247AC package, no AEC-Q101 qualification | Not qualified for automotive use; lacks guard ring and UL recognition | Preferred for cost-sensitive industrial SMPS where automotive qualification is unnecessary |
| ON Semiconductor MBR4030CT | 30 V VRRM, 40 A IF, TO-220AB package, 1.7 °C/W RθJC, no AEC-Q101 | Higher thermal resistance limits power density; not rated for under-hood ambient temperatures | Suitable for lower-power adapters or non-automotive monitors where footprint and cost outweigh thermal performance |
Compared with VS-40CPH03-M3 and MBR4030CT, the SR4030PT delivers superior automotive readiness (AEC-Q101 + UL E-326243), lower thermal resistance (1.2 vs. ≥1.7 °C/W), and enhanced transient ruggedness-making it the only option qualified for safety-critical 12 V/48 V automotive DC-DC designs.
Availability
SR4030PT is available at Aetrix Electronics and suitable for automotive power conversion, industrial SMPS, and consumer display power supplies requiring stable component supply, long-lifecycle support, and AEC-Q101-compliant sourcing.
Supply support for SR4030PT 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 automotive, industrial, and computing markets since 1979.
The SR4030PT belongs to TSC's AEC-Q101-qualified Schottky rectifier product line, engineered specifically for high-reliability, high-current secondary-side rectification in automotive and industrial power systems where efficiency, thermal performance, and transient robustness are critical.
FAQ
What is the maximum junction temperature rating for the SR4030PT?
The SR4030PT has a maximum junction temperature (TJ) rating of 150 °C, verified per AEC-Q101 stress testing. This allows reliable operation in under-hood automotive environments and high-ambient industrial settings. Derating begins at 125 °C case temperature, reaching zero forward current at 150 °C. The SR4030PT datasheet specifies this limit across all operating conditions, and thermal design must account for RθJC = 1.2 °C/W when calculating heatsink requirements.
Is the SR4030PT pin-compatible with other parts in the SR40xxPT family?
Yes-the SR4030PT shares identical TO-247AD (TO-3P) mechanical outline, pin assignment, and mounting interface with all SR4020PT through SR40100PT variants. All devices use the same anode/cathode/tab terminal configuration and marking orientation. However, electrical parameters-including VRRM, VF, and IR-vary by voltage grade, so substitution requires verification of reverse voltage margin and thermal performance in the target circuit.
Does the SR4030PT have UL recognition, and what does that cover?
Yes, the SR4030PT carries UL Recognition under File # E-326243, covering compliance with UL 60950-1 and UL 62368-1 for information technology and audio/video equipment. This applies to the entire SR40xxPT series and validates flammability (UL 94V-0), insulation integrity, and construction safety-enabling direct use in certified end products without additional component-level safety testing.
What is the forward voltage specification for the SR4030PT, and how is it measured?
The SR4030PT has a typical forward voltage (VF) of 0.55 V at IF = 20 A and TJ = 25 °C, measured using a 0.3 ms pulse width per datasheet Note 1. This value reflects low conduction loss under nominal load, critical for high-efficiency designs. VF increases with junction temperature and current-e.g., ~0.62 V at 20 A and 100 °C-so thermal management directly impacts real-world efficiency of the SR4030PT in operation.
How does the guard ring feature improve reliability of the SR4030PT?
The guard ring in the SR4030PT mitigates edge breakdown during voltage transients by redistributing electric field stress away from the semiconductor junction periphery. This structure enables the device to survive repetitive 60 V load-dump pulses (per ISO 7637-2) without parameter shift or failure-critical for automotive 12 V systems. Unlike standard Schottkys, the SR4030PT maintains stable VRRM and leakage after such events, extending field life in harsh environments.
SR4030PT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Series:
- -
- Package/Case:
- TO-247-3
- Packaging:
- Tube
- Product Status:
- Active
- Diode Configuration:
- 1 Pair Common Cathode
- Technology:
- Schottky
- Voltage - DC Reverse (Vr) (Max):
- 30 V
- Current - Average Rectified (Io) (per Diode):
- 40A
- Voltage - Forward (Vf) (Max) @ If:
- 550 mV @ 20 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- -
- Current - Reverse Leakage @ Vr:
- 1 mA @ 30 V
- Operating Temperature - Junction:
- -55°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- TO-247AD (TO-3P)
SR4030PT FAQ
1.How can I place an order for SR4030PT through Aetrix?
Please submit a Request for Quotation (RFQ) for SR4030PT 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 SR4030PT reliable?
The price and inventory of SR4030PT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SR4030PT is usually 5 days.
3.What payment methods are accepted for SR4030PT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SR4030PT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SR4030PT?
SR4030PT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SR4030PT 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 SR4030PT?
For technical support, including SR4030PT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SR4030PT requirements.
6.How does Aetrix verify that SR4030PT is sourced from the original manufacturer or authorized distributors?
All SR4030PT 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 SR4030PT meets industry standards.
7.What is the process for return or replacement of SR4030PT?
All SR4030PT units undergo pre-shipment inspection (PSI). If there is an issue with SR4030PT, 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 SR4030PT part is unused and in its original packaging.
Return procedure for SR4030PT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SR4030PT Tags
-
BAV99-7-F
Diodes Incorporated
-
BAT54C-7-F
Diodes Incorporated
-
BAV99,215
Nexperia USA Inc.
-
BAT54SLT1G
onsemi
-
BAV70LT1G
onsemi
-
BAT54CLT1G
onsemi
-
BAT54S-7-F
Diodes Incorporated
-
BAV99LT1G
onsemi
-
BAT54S,215
Nexperia USA Inc.
-
BAS40-04LT1G
onsemi
-
MMBD1503-TP
Micro Commercial Co
-
BAV99WT1G
onsemi
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…
