STPS40A45CHYT STMicroelectronics Schottky Diode (Transistor Outline, Vertical) In Stock
STPS40A45CHYT is a 45 V, 2 x 20 A dual Schottky rectifier in a TO-254AA package, featuring low forward voltage of 0.82 V and common-cathode configuration. Available from STMicroelectronics with worldwide shipping.
- Manufacturer
- STMicroelectronics
- Package
- Transistor Outline, Vertical
- Pin Count
- 3
- Lifecycle
- ACTIVE
- Datasheet
- STPS40A45CHYT Datasheet PDF
- Category
- Schottky Diode
- Temp Range
- -65.0°C to 175.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
What are the key features of STPS40A45CHYT?
- Dual common-cathode 2 x 20 A Schottky rectifier rated at 45 V reverse voltage
- Ultra-low forward voltage of 0.82 V max for reduced conduction losses
- TO-254AA (JEDEC S-MSFM-P3) aerospace-grade package with 200 A non-repetitive peak forward current rating
What is STPS40A45CHYT used for?
STPS40A45CHYT is suited for high-current power conversion and rectification in aerospace and industrial power supplies. Its dual 20 A / 45 V Schottky elements support full-wave and split-rail rectifier topologies. The low forward drop minimises thermal dissipation in DC-DC converters and freewheeling circuits operating up to 200 A peak.
What are the specifications of STPS40A45CHYT?
| Date Of Intro | 2020-03-20 |
| YTEOL | 6 |
| Application | GENERAL PURPOSE |
| Configuration | COMMON CATHODE, 2 ELEMENTS |
| Diode Element Material | SILICON |
| Diode Type | RECTIFIER DIODE |
| Forward Voltage-Max (VF) | 0.82V |
| JEDEC-95 Code | TO-254AA |
| JESD-30 Code | S-MSFM-P3 |
| Non-rep Pk Forward Current-Max | 200A |
| Number of Elements | 2 |
| Number of Phases | 1 |
| Output Current-Max | 20A |
| Package Body Material | METAL |
| Package Shape | SQUARE |
| Package Style | FLANGE MOUNT |
| Reference Standard | ESA/SCC 5106/023 |
| Rep Pk Reverse Voltage-Max | 45V |
| Reverse Current-Max | 25 µA |
| Reverse Test Voltage | 45V |
| Surface Mount | NO |
| Technology | SCHOTTKY |
| Terminal Form | PIN/PEG |
| Terminal Position | SINGLE |
| Package | Transistor Outline, Vertical |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| ECCN | EAR99 |
| HTS Code | 8541.10.00.80 |
| Country of Origin | France |
Where can I find the STPS40A45CHYT datasheet?
STPS40A45CHYT Datasheet DownloadOfficial datasheet from STMicroelectronics
What are equivalent replacements for STPS40A45CHYT?
Compatible alternatives and drop-in replacements for STPS40A45CHYT:
Rectifier Diode, Schottky, 1 Phase, 2 Element, 20A, 45V V(RRM), Silicon, TO-254AA
Rectifier Diode, Schottky, 1 Phase, 2 Element, 20A, 45V V(RRM), Silicon, TO-254AA
Frequently Asked Questions
What is the maximum reverse voltage and forward current rating of the STPS40A45CHYT?
The STPS40A45CHYT is rated for a 45 V reverse voltage and 20 A continuous forward current per element, giving a total of 40 A in a common-cathode dual configuration. It can handle a non-repetitive peak forward current of 200 A, making it robust for high-surge power applications.
How does the 0.82 V forward voltage of STPS40A45CHYT benefit switching power supply designs?
The maximum forward voltage of 0.82 V at rated current means conduction losses stay low even at 20 A per element, reducing heat dissipation compared to standard silicon rectifiers that typically drop 1.0 V or more. This is critical in 12 V or 24 V output supplies where a 0.2 V difference translates directly into measurable efficiency gains.
Which industrial and aerospace circuit topologies are best served by the common-cathode dual configuration of STPS40A45CHYT?
The common-cathode dual Schottky structure is ideal for full-wave center-tap rectifiers, dual-output split-rail converters, and freewheeling diode pairs in motor-drive bridges operating up to 45 V. In aerospace DC-DC converters requiring MIL-grade reliability, the TO-254AA package and 200 A surge rating provide the robustness demanded by those environments.
Related Guides
DP83TG720SWRHATQ1 Automotive Ethernet PHY Selection Guide
Choose DP83TG720SWRHATQ1 by comparing MAC interfaces, exact ordering codes, qualification evidence, and documented supply offers.
Nov 15, 2026
TLV76033 Selection Guide: Headroom, Heat, and Sourcing
Choose a TLV76033 3.3-V supply using manufacturer ratings, load profiles, dropout calculations, thermal checks, and exact orderable parts.
Nov 14, 2026
DP83TG720SWRHATQ1 Automotive Ethernet Board Design Guide
A practical DP83TG720SWRHATQ1 board checklist for host interfaces, startup, channel validation, qualified variants, and sourcing.
Nov 14, 2026
BQ76942PFBR Battery Monitor Selection and Procurement Guide
Choose BQ76942PFBR by cell count, protection architecture, factory configuration, measurement needs, and a controlled sourcing specification.
Nov 13, 2026
Why Buy from FindMyChip
About STMicroelectronics
STMicroelectronics is a global semiconductor leader serving customers across the spectrum of electronics applications. ST's products are found in a wide range of applications including automotive, industrial, personal electronics, and communications.
In Stock · 24h Response · Worldwide Shipping
Response within 24 hours · Worldwide shipping
“Their engineering team helped us find a pin-compatible alternative when our original MCU went EOL.”
You May Also Like
B5817WS-TP
Micro Commercial Components (MCC)
Schottky Diode
RB161VAM-20TR
ROHM Semiconductor
Schottky Diode
RBE2VAM20ATR
ROHM Semiconductor
Schottky Diode
CDBA5150-HF
Comchip Technology
Schottky Diode
RB168MM150TR
ROHM Semiconductor
Schottky Diode
BAS285-GS18
Vishay
Schottky Diode
BAT54WX-TP
Micro Commercial Components (MCC)
Schottky Diode
SCS215KGHRC
ROHM Semiconductor
Schottky Diode
SK54C
Taiwan Semiconductor
Schottky Diode
SS2150-LTP
Micro Commercial Components (MCC)
Schottky Diode
SD1206S020S1R0
AVX
Schottky Diode
1N5819HW-7
Diodes Inc.
Schottky Diode
SCS206AMC
ROHM Semiconductor
Schottky Diode
SCS220AMC
ROHM Semiconductor
Schottky Diode
RB058L-60TE25
ROHM Semiconductor
Schottky Diode
MSS1P6-M3/89A
Vishay
Schottky Diode
NSR0240P2T5G
ON Semiconductor
Schottky Diode
SK1010-TP
Micro Commercial Components (MCC)
Schottky Diode
CRS15(TE85L,Q,M)
Toshiba
Schottky Diode
MBR0560-TP
Micro Commercial Components (MCC)
Schottky Diode
RB520SM-40T2R
ROHM Semiconductor
Schottky Diode
MBRM130LT3G
ON Semiconductor
Schottky Diode
SK310B-LTP
Micro Commercial Components (MCC)
Schottky Diode
SK310B-TP
Micro Commercial Components (MCC)
Schottky Diode