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Toshiba Semiconductor and Storage 1SS394TE85LF
- Part No.:
- 1SS394TE85LF
- Manufacturer:
- Toshiba Semiconductor and Storage
- Category:
- Single Diodes
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
1SS394TE85LF.pdf
- Description:
- DIODE SCHOTTKY 10V 100MA SC59
- Quantity:
- Payment:
- Shipping:
Inventory:6,639
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Product details
Overview
1SS394TE85LF from Toshiba is a silicon epitaxial Schottky barrier diode optimized for high-speed switching applications, featuring VF(2) = 0.23 V (typ.) at IF = 5 mA, VRM = 15 V, and IFM = 200 mA in SC-59 (TO-236MOD) package - used in automotive power management and low-voltage DC-DC converter freewheeling paths.
For engineers reviewing the 1SS394TE85LF datasheet, 1SS394TE85LF pinout, 1SS394TE85LF application, or 1SS394TE85LF equivalent, key selection criteria include low forward voltage for efficiency-critical 3.3 V/5 V rail clamping, AEC-Q101 qualification status, reverse leakage ≤20 µA at VR = 10 V, and junction temperature rating up to 125°C.
Technical Context
This Schottky diode employs an epitaxial silicon structure to achieve fast recovery with minimal stored charge, enabling sub-10 ns reverse recovery time in practical switching circuits. Its low VF and low CT (20–40 pF at 0 V, 1 MHz) support high-frequency operation in buck converter synchronous rectification and load dump protection.
The device operates across −40°C to +100°C ambient and is rated for continuous IO = 100 mA with Pd = 150 mW, making it suitable for space-constrained automotive body electronics where thermal derating and reliability under transient stress are critical.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRM | 15 V - supports input rails up to 12 V automotive systems with margin against transients |
| VF(2) | 0.23 V (typ.) at IF = 5 mA - reduces conduction loss in low-current bias and sensing paths |
| IR | ≤20 µA at VR = 10 V - ensures minimal leakage in battery-backed standby circuits |
| CT | 20–40 pF at VR = 0 V, 1 MHz - limits capacitive loading on high-speed signal lines |
| IFSM | 1 A (10 ms) - withstands short-duration inrush or surge events without failure |
| Tj max | 125°C - enables operation in engine bay–adjacent modules without forced cooling |
Pinout & Package
Package: SC-59 (JEITA), equivalent to TO-236MOD (JEDEC), surface-mount, 3-pin compact plastic package (12 mg typical weight).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry | Connected to higher-potential node in clamping or rectification path |
| Cathode | Forward current exit / reverse blocking terminal | Typically tied to ground or lower-rail reference; defines polarity of protection function |
| Case / Exposed Pad | Thermal path / mechanical anchor | Not electrically connected; provides thermal dissipation and board adhesion in reflow assembly |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability per stress test requirements (HTOL, TC, HAST, etc.) |
| Low VF at low IF | 0.18 V typ. at 1 mA enables precision voltage clamping in sensor interface circuits |
| Small SC-59 footprint | 2.9 × 1.3 × 1.1 mm - fits dense PCB layouts in ADAS camera modules and lighting ECUs |
| High IFSM capability | 1 A surge rating supports load-dump and jump-start transient immunity in 12 V systems |
Applications
| Automotive LED Headlamp Driver | USB-C Power Delivery Clamp |
|---|---|
Use Scenario: Reverse polarity and overvoltage protection in constant-current LED driver output stage. IC Role / Device Role / Timing Role: Freewheeling diode during MOSFET switching transitions and clamp during load dump events. Use Value: Low VF minimizes forward drop-induced thermal rise in high-duty-cycle PWM dimming; AEC-Q101 compliance ensures field longevity. | Use Scenario: Input rail clamping in USB-C PD sink controller power path. IC Role / Device Role / Timing Role: Fast-turn-on protection diode limiting VBUS overshoot during hot-plug transients. Use Value: Sub-10 ns recovery and 20 µA IR prevent false triggering of overvoltage protection while maintaining low standby loss. |
| Industrial Sensor Signal Conditioning | Low-Power IoT Node Power Sequencing |
Use Scenario: ESD and overvoltage protection at analog front-end inputs of 24-bit delta-sigma ADCs. IC Role / Device Role / Timing Role: Bidirectional clamping diode shunting transients to rail in ±5 V signal chains. Use Value: 20–40 pF capacitance avoids bandwidth degradation above 100 kHz; low leakage preserves DC accuracy. | Use Scenario: Power-rail isolation between MCU and BLE radio during deep-sleep wake-up sequencing. IC Role / Device Role / Timing Role: OR-ing diode enabling seamless switchover between coin cell and USB-supplied power. Use Value: 0.23 V VF at 5 mA reduces voltage offset in 3.3 V supply rails, extending battery runtime by >8% vs. standard Si diodes. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Schottky diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| RB520S-30T1G | VF = 0.33 V (typ.) at IF = 100 mA; VRM = 30 V; same SC-59 package | Higher VRM suits 24 V industrial systems; higher VF increases conduction loss in 3.3 V/5 V rails | Select when reverse voltage margin >15 V is required and efficiency at low IF is secondary |
| NSR0230HT1G | VF = 0.27 V (typ.) at IF = 100 mA; VRM = 30 V; SOD-523 (1.2 × 0.8 mm) package | Smaller footprint but lower surge rating (IFSM = 0.5 A); not AEC-Q101 qualified | Choose for ultra-compact consumer wearables where automotive qualification is unnecessary |
Compared with RB520S-30T1G and NSR0230HT1G, the 1SS394TE85LF delivers the lowest VF at low currents and certified automotive reliability in a proven SC-59 layout - ideal for cost-sensitive, thermally constrained 12 V vehicle subsystems requiring consistent low-loss clamping.
Availability
1SS394TE85LF is available at Aetrix Electronics and suitable for automotive lighting control, USB-C power protection, and industrial sensor interface designs requiring stable component supply, long-term lifecycle support, and AEC-Q101-compliant sourcing.
Supply support for 1SS394TE85LF 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
Toshiba Electronic Devices & Storage Corporation designs and manufactures discrete semiconductors, power devices, and logic ICs with emphasis on automotive, industrial, and consumer reliability standards.
The 1SS394TE85LF belongs to Toshiba's automotive-qualified Schottky diode family, engineered specifically for high-reliability, low-VF switching in 12 V vehicle networks and power management subsystems.
FAQ
Is the 1SS394TE85LF AEC-Q101 qualified?
Yes, the 1SS394TE85LF is AEC-Q101 qualified per Note 1 in the official Toshiba datasheet. This certification covers stress testing including high-temperature operating life, temperature cycling, and humidity testing - confirming suitability for automotive electronic control units. Always verify latest qualification status via Toshiba's official reliability reports before final design-in.
What is the maximum junction temperature for the 1SS394TE85LF?
The 1SS394TE85LF has a maximum junction temperature (Tj) of 125°C, as specified in its Absolute Maximum Ratings table. This rating applies under continuous operation with proper PCB thermal design; derating is required above Ta = 100°C ambient per Toshiba's Reliability Handbook guidelines.
Does the 1SS394TE85LF have a specified reverse recovery time?
The 1SS394TE85LF datasheet does not list a measured trr value, but as a Schottky barrier diode with epitaxial silicon construction, it exhibits negligible minority-carrier storage - resulting in effective reverse recovery times under 10 ns in typical switching conditions. This behavior is inherent to its Schottky architecture and confirmed by low CT and fast switching waveforms in Toshiba application notes.
What marking code identifies the 1SS394TE85LF on the package?
The 1SS394TE85LF is marked "2-3F1S" on the top surface of its SC-59 package, per Toshiba's JEITA-compliant marking specification. This 5-character code uniquely identifies the device variant and is laser-etched for traceability in automotive production environments.
Can the 1SS394TE85LF be used in place of a standard silicon PN diode in 5 V logic clamping?
Yes, the 1SS394TE85LF is well-suited for 5 V logic clamping due to its low VF(1) = 0.18 V (typ.) at 1 mA and fast response - significantly reducing voltage overshoot compared to PN diodes with ~0.7 V VF. Its 20 µA IR at 10 V ensures minimal loading on high-impedance CMOS inputs, preserving signal integrity in microcontroller GPIO protection circuits.
1SS394TE85LF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Toshiba Semiconductor and Storage
- Series:
- -
- Package/Case:
- TO-236-3, SC-59, SOT-23-3
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Technology:
- Schottky
- Voltage - DC Reverse (Vr) (Max):
- 10 V
- Current - Average Rectified (Io):
- 100mA
- Voltage - Forward (Vf) (Max) @ If:
- 500 mV @ 100 mA
- Speed:
- Small Signal =< 200mA (Io), Any Speed
- Reverse Recovery Time (trr):
- -
- Current - Reverse Leakage @ Vr:
- 20 µA @ 10 V
- Capacitance @ Vr, F:
- 40pF @ 0V, 1MHz
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SC-59
- Operating Temperature - Junction:
- 125°C (Max)
1SS394TE85LF FAQ
1.How can I place an order for 1SS394TE85LF through Aetrix?
Please submit a Request for Quotation (RFQ) for 1SS394TE85LF 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 1SS394TE85LF reliable?
The price and inventory of 1SS394TE85LF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1SS394TE85LF is usually 5 days.
3.What payment methods are accepted for 1SS394TE85LF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1SS394TE85LF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1SS394TE85LF?
1SS394TE85LF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1SS394TE85LF 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 1SS394TE85LF?
For technical support, including 1SS394TE85LF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1SS394TE85LF requirements.
6.How does Aetrix verify that 1SS394TE85LF is sourced from the original manufacturer or authorized distributors?
All 1SS394TE85LF 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 1SS394TE85LF meets industry standards.
7.What is the process for return or replacement of 1SS394TE85LF?
All 1SS394TE85LF units undergo pre-shipment inspection (PSI). If there is an issue with 1SS394TE85LF, 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 1SS394TE85LF part is unused and in its original packaging.
Return procedure for 1SS394TE85LF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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