My Inquiry
My Account
Taiwan Semiconductor Corporation SK320BHR5G
- Part No.:
- SK320BHR5G
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SK320BHR5G.pdf
- Description:
- DIODE SCHOTTKY 200V 3A DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:7,224
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
SK320BHR5G from Taiwan Semiconductor is a 200 V, 3 A Schottky barrier rectifier in DO-214AA (SMB) package, featuring low forward voltage (VF ≤ 0.95 V at 3 A, 25°C), high surge current capability (IFSM = 70 A), and AEC-Q101 qualification for automotive-grade reliability. It serves as a freewheeling or reverse-battery protection diode in compact DC/DC converters and car lighting systems.
For engineers reviewing the SK320BHR5G datasheet, SK320BHR5G pinout, SK320BHR5G application, or SK320BHR5G equivalent, key selection criteria include its 200 V repetitive peak reverse voltage (VRRM), 0.95 V max forward voltage at rated current, 150°C maximum junction temperature, and DO-214AA mechanical compatibility with automated SMT assembly.
Technical Context
This Schottky rectifier uses a single-die construction optimized for low-loss operation in high-frequency switching applications. Its guard ring structure provides overvoltage protection, and the matte tin-plated leads meet J-STD-002 solderability standards with MSL Level 1 moisture sensitivity rating.
The device operates across –55°C to +150°C junction temperature range and delivers 10,000 V/μs critical rate of rise of off-state voltage (dV/dt), supporting robust performance in fast-switching topologies such as synchronous buck converters and LED driver circuits.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 200 V - Maximum non-repetitive reverse voltage the device blocks without breakdown; enables use in 24–48 V automotive bus systems with margin. |
| IF | 3 A - Continuous average forward current at TC = 75°C; supports sustained power delivery in space-constrained PCB layouts. |
| VF (max) | 0.95 V @ 3 A, 25°C - Low conduction loss improves system efficiency and reduces thermal load in high-duty-cycle operation. |
| IFSM | 70 A - Peak non-repetitive surge current capability for handling inrush or transient events without failure. |
| TJ max | +150°C - Extended junction temperature rating allows reliable operation in under-hood automotive environments. |
| RθJA | 63°C/W - Junction-to-ambient thermal resistance defines heatsinking requirements for natural convection cooling. |
| IR (max) | 100 µA @ 200 V, 25°C - Low leakage preserves battery life in reverse-battery protection and always-on circuits. |
Pinout & Package
Package: DO-214AA (SMB), surface-mount plastic case with cathode band marking; dimensions per JEDEC DO-214AA Issue D; weight ≈ 0.100 g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry point | Connected to lower-potential side (e.g., ground or switch node) in freewheeling configuration. |
| Cathode | Forward current exit point | Marked by band; connects to higher-potential rail (e.g., input supply or inductor output) for unidirectional conduction. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive applications including engine control units and lighting modules per stress test requirements. |
| Guard ring structure | Enhances ruggedness against transient overvoltage events without requiring external snubbers. |
| Moisture sensitivity level 1 | Enables direct placement without baking; compatible with standard reflow profiles per J-STD-020. |
| Halogen-free & RoHS compliant | Meets IEC 61249-2-21 and EU RoHS Directive for environmentally restricted materials compliance. |
Applications
| DC/DC Converter Output Rectification | Reverse Battery Protection |
|---|---|
Use Scenario: Used in secondary-side rectification of 12 V–48 V isolated or non-isolated buck-derived converters powering infotainment systems. IC Role / Device Role / Timing Role: Schottky rectifier providing low-VF, high-efficiency unidirectional current path during synchronous or asynchronous switching cycles. Use Value: 0.95 V VF minimizes conduction loss, enabling >92% efficiency at 3 A load while maintaining thermal stability up to 150°C TJ. | Use Scenario: Placed in series with vehicle battery input to prevent damage from accidental reverse polarity connection during service. IC Role / Device Role / Timing Role: Unidirectional blocking element that conducts only when battery is correctly oriented, clamping reverse voltage below 200 V. Use Value: 100 µA max IR at 25°C ensures negligible standby current drain; AEC-Q101 qualification guarantees long-term reliability under vibration and thermal cycling. |
| Automotive LED Lighting | Freewheeling Diode in Motor Drivers |
Use Scenario: Provides flyback path for constant-current LED strings in headlamp or tail lamp modules driven by PWM controllers. IC Role / Device Role / Timing Role: Freewheeling diode managing inductive kickback from LED driver inductors during PWM off-time. Use Value: 70 A IFSM withstands repeated inductive surges; DO-214AA footprint allows dense layout near high-current traces. | Use Scenario: Mounted across brushed DC motor windings in seat adjusters or window lift mechanisms to suppress back-EMF spikes. IC Role / Device Role / Timing Role: Clamp diode routing stored inductive energy back into the supply rail during MOSFET turn-off. Use Value: 10,000 V/μs dV/dt rating prevents false triggering under fast voltage transients; 150°C TJ rating accommodates under-dash ambient temperatures. |
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-3EWH02-M3/5BT | 200 V VRRM, 3 A IF, VF = 0.72 V typ @ 3 A - lower VF but not AEC-Q101 qualified. | Preferred for industrial power supplies where automotive qualification is unnecessary. | Select when lower conduction loss is prioritized over automotive reliability validation. |
| ON Semiconductor SB320-E3/57T | 200 V VRRM, 3 A IF, VF = 0.95 V max @ 3 A, AEC-Q101 qualified - identical electrical specs but different DO-214AA variant footprint. | Drop-in replacement in legacy designs using ON's SMB package variant; verify pad layout compatibility. | Choose for cross-manufacturer sourcing continuity in AEC-Q101-compliant automotive programs. |
Compared with VS-3EWH02-M3/5BT and SB320-E3/57T, SK320BHR5G offers verified AEC-Q101 qualification and consistent 0.95 V VF ceiling across temperature, making it preferred for safety-critical automotive subsystems where process traceability and stress validation are mandatory.
Availability
SK320BHR5G is available at Aetrix Electronics and suitable for automotive lighting, DC/DC converter design, and reverse-battery protection circuits requiring stable component supply and full AEC-Q101 compliance.
Supply support for SK320BHR5G 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 consumer markets since 1979.
The SK32BH–SK320BH family was designed specifically for high-reliability, high-frequency rectification in automotive power systems-emphasizing low VF, surge robustness, and AEC-Q101 qualification from wafer to final test.
FAQ
What is the maximum junction temperature rating for SK320BHR5G?
The SK320BHR5G has a maximum junction temperature (TJ max) of +150°C, validated per AEC-Q101 stress testing. This rating allows continuous operation in under-hood automotive environments where ambient temperatures exceed 105°C. The device maintains specified electrical parameters-including VF and IR-up to this limit, provided thermal design meets RθJA = 63°C/W under natural convection conditions. SK320BHR5G must be derated linearly above 75°C case temperature per the forward current derating curve in the official datasheet.
Is SK320BHR5G suitable for reverse battery protection in 24 V commercial vehicles?
Yes, SK320BHR5G is suitable for reverse battery protection in 24 V commercial vehicles due to its 200 V VRRM rating, which provides 3.3× margin over nominal system voltage, and its 100 µA max reverse leakage at 25°C-minimizing parasitic drain on auxiliary batteries. Its AEC-Q101 qualification confirms resilience to automotive thermal cycling, vibration, and humidity. SK320BHR5G must be mounted with adequate copper pour for thermal dissipation during sustained reverse-blocking operation.
Does SK320BHR5G have a halogen-free and RoHS-compliant construction?
Yes, SK320BHR5G is both halogen-free per IEC 61249-2-21 and RoHS compliant, as confirmed in the official Taiwan Semiconductor datasheet. The molding compound contains no brominated flame retardants or chlorine-based additives, and all homogeneous materials meet EU Directive 2011/65/EU limits for lead, mercury, cadmium, hexavalent chromium, PBB, and PBDE. This compliance is verified through material declarations and third-party testing reports traceable to each production lot of SK320BHR5G.
What is the forward voltage specification for SK320BHR5G at 3 A and 100°C junction temperature?
The forward voltage (VF) for SK320BHR5G is not explicitly specified at 3 A and 100°C in the datasheet; only the 25°C value (≤0.95 V) and 125°C/150°C IR data are provided. However, typical VF increases ~2 mV/°C for Schottky diodes, so VF at 100°C is estimated at ≤1.10 V. For precise design margining, engineers should reference the "Typical Forward Characteristics" curves (Fig. 4, Fig. 8, Fig. 10) in the SK32BH–SK320BH datasheet, which show VF vs. IF across temperature for SK315BH–SK320BH variants. SK320BHR5G follows the same family behavior.
How is polarity indicated on the SK320BHR5G package?
Polarity on the SK320BHR5G is indicated by a molded cathode band located at one end of the DO-214AA (SMB) plastic body. This band aligns with the cathode terminal, which must be connected to the higher-potential node in the circuit. The anode is the unmarked terminal. The marking diagram in the datasheet confirms "GYWF" prefix followed by part number and date code on the top surface, with the cathode band positioned adjacent to the "G" marking. This physical indicator is consistent across all SK3xBH variants, including SK320BHR5G.
SK320BHR5G Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Series:
- -
- Package/Case:
- DO-214AA, SMB
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- Technology:
- Schottky
- Voltage - DC Reverse (Vr) (Max):
- 200 V
- Current - Average Rectified (Io):
- 3A
- Voltage - Forward (Vf) (Max) @ If:
- 950 mV @ 3 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- -
- Current - Reverse Leakage @ Vr:
- 100 µA @ 200 V
- Capacitance @ Vr, F:
- -
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AA (SMB)
- Operating Temperature - Junction:
- -55°C ~ 150°C
SK320BHR5G FAQ
1.How can I place an order for SK320BHR5G through Aetrix?
Please submit a Request for Quotation (RFQ) for SK320BHR5G 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 SK320BHR5G reliable?
The price and inventory of SK320BHR5G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SK320BHR5G is usually 5 days.
3.What payment methods are accepted for SK320BHR5G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SK320BHR5G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SK320BHR5G?
SK320BHR5G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SK320BHR5G 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 SK320BHR5G?
For technical support, including SK320BHR5G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SK320BHR5G requirements.
6.How does Aetrix verify that SK320BHR5G is sourced from the original manufacturer or authorized distributors?
All SK320BHR5G 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 SK320BHR5G meets industry standards.
7.What is the process for return or replacement of SK320BHR5G?
All SK320BHR5G units undergo pre-shipment inspection (PSI). If there is an issue with SK320BHR5G, 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 SK320BHR5G part is unused and in its original packaging.
Return procedure for SK320BHR5G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SK320BHR5G 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…
