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Toshiba Semiconductor and Storage CUS01(TE85L,Q,M)
- Part No.:
- CUS01(TE85L,Q,M)
- Manufacturer:
- Toshiba Semiconductor and Storage
- Category:
- Single Diodes
- Package:
- SC-76, SOD-323
- Datasheet:
-
CUS01(TE85L,Q,M).pdf
- Description:
- DIODE SCHOTTKY 30V 1A US-FLAT
- Quantity:
- Payment:
- Shipping:
Inventory:9,342
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Product details
Overview
CUS01(TE85L,Q,M) from Toshiba is a Schottky barrier rectifier optimized for low-voltage, high-efficiency DC power conversion in portable battery-powered equipment. It delivers 1.0 A average forward current at 30 V repetitive peak reverse voltage, with a low 0.37 V maximum forward voltage at 0.7 A - enabling reduced conduction loss and thermal stress in compact charging and power-path circuits.
For engineers reviewing the CUS01(TE85L,Q,M) datasheet, CUS01(TE85L,Q,M) pinout, CUS01(TE85L,Q,M) application, or CUS01(TE85L,Q,M) equivalent, key selection criteria include its ultra-low VF/IR trade-off profile, US-FLAT™ package thermal performance (Rth(j–ℓ) = 30°C/W), and suitability for high-density board assembly in space-constrained portable designs.
Technical Context
The CUS01(TE85L,Q,M) employs a planar Schottky barrier structure on silicon, delivering fast switching with negligible reverse recovery charge. Its junction capacitance of 40 pF at 10 V enables stable operation in high-frequency DC–DC converters up to several hundred kHz.
Thermal design is critical: Rth(j–a) varies from 75°C/W (ceramic board, 2 mm × 2 mm pad) to 150°C/W (glass-epoxy, 6 mm × 6 mm pad), while Rth(j–ℓ) remains fixed at 30°C/W - making cathode-side lead soldering essential for thermal management in sustained 1 A operation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 30 V - supports input rails up to 24 V nominal with margin against transients in USB PD and Li-ion battery systems |
| IF(AV) | 1.0 A - rated for continuous conduction in single-cell charger output stages and load-switch paths |
| VFM (max) | 0.37 V @ 0.7 A - reduces forward power loss to ≤260 mW, minimizing self-heating in sealed enclosures |
| IRRM (max) | 1.5 mA @ 30 V - defines leakage-limited hold-off capability in reverse-biased protection configurations |
| Rth(j–ℓ) | 30°C/W - enables direct thermal coupling to PCB copper pour or heatsink via cathode lead, critical for >0.5 A steady-state use |
| Cj | 40 pF @ 10 V - limits capacitive loading on switching nodes in synchronous buck converter freewheel paths |
Pinout & Package
Package: US-FLAT™ (TOSHIBA 3-2B1S), surface-mount, 2-pin SMD with exposed cathode pad. Dimensions: 2.5 mm × 1.9 mm × 0.64 mm (L × W × H), weight 0.004 g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| ① Anode | Input/Source terminal | Connected to higher-potential node (e.g., switcher output or battery anode); carries full forward current |
| ② Cathode | Output/Sink terminal | Primary thermal path - must be soldered to ≥2 mm² copper area; connects to ground or load return |
Key Features
| Feature | Design Value |
|---|---|
| Low forward voltage | 0.33 V typical at 0.7 A - directly lowers I²R losses and improves efficiency in 3.3–5 V power rails |
| High surge tolerance | 20 A non-repetitive peak forward surge (50 Hz half-sine) - withstands inrush during hot-plug events |
| Junction temperature range | −40°C to +125°C - supports operation in automotive cabin and industrial handheld environments |
| Small footprint | 2.5 mm × 1.9 mm outline - enables placement adjacent to ICs in ultra-thin mobile PCBs without shadowing |
Applications
| USB Power Delivery Input Protection | Li-ion Battery Charging Path |
|---|---|
Use Scenario: Prevents reverse current flow from battery into faulty or disconnected USB source while maintaining low-loss forward conduction. IC Role / Device Role / Timing Role: Unidirectional power-path diode in OR-ing configuration upstream of charging IC. Use Value: 0.37 V VFM minimizes voltage drop across diode, preserving headroom for 4.2 V battery termination and reducing thermal load on PCB. |
Use Scenario: Isolates charger IC output from battery during shutdown or fault, blocking reverse discharge through charger circuitry. IC Role / Device Role / Timing Role: Reverse-blocking element in linear or switching charger output stage. Use Value: 1.5 mA max IRRM at 30 V ensures minimal standby drain, extending shelf life of sealed battery packs. |
| Portable Audio Amplifier Power Supply | Wearable Sensor Node Power Rail |
Use Scenario: Supplies clean, low-noise DC to Class-D amplifier ICs in Bluetooth speakers and headphones where EMI-sensitive analog sections coexist. IC Role / Device Role / Timing Role: Output rectifier in boost converter powering amplifier VDD rail. Use Value: 40 pF junction capacitance avoids high-frequency coupling into audio signal paths, preventing audible switching noise. |
Use Scenario: Provides isolated power domain for ultra-low-power MCU and BLE radio in coin-cell–powered health monitors. IC Role / Device Role / Timing Role: Low-leakage isolation diode between energy-harvesting source and regulated LDO input. Use Value: −40°C to +125°C operating range ensures reliability during skin-contact temperature cycling and sterilization processes. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Schottky rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| RB050M-30 | Higher VRRM (40 V), higher VFM (0.45 V typ @ 0.7 A), same US-FLAT™ package | Better transient margin but 22% higher conduction loss - suitable where input voltage exceeds 28 V | Select RB050M-30 if system requires >30 V reverse standoff; accept efficiency penalty for robustness |
| SS12 | Same VRRM (30 V), higher IF(AV) (2.0 A), larger SMA package (4.5 mm × 2.7 mm) | Lower thermal resistance but doubles footprint - viable only if board area permits | Choose SS12 only when 1 A rating is insufficient and layout allows larger SMD diode; not pin-compatible |
Compared with RB050M-30 and SS12, the CUS01(TE85L,Q,M) offers the smallest footprint and lowest forward voltage among 1 A-class Schottky rectifiers in Toshiba's US-FLAT™ family - making it optimal for space- and efficiency-critical portable battery interfaces where 30 V reverse rating suffices.
Availability
CUS01(TE85L,Q,M) is available at Aetrix Electronics and suitable for portable equipment battery applications, USB power delivery subsystems, and wearable sensor node power management requiring stable component supply and long-term manufacturability.
Supply support for CUS01(TE85L,Q,M) 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 energy efficiency, miniaturization, and automotive-grade reliability.
The CUS01(TE85L,Q,M) belongs to Toshiba's US-FLAT™ Schottky rectifier product line, engineered specifically for high-density portable electronics where low VF, small size, and controlled thermal resistance are mandatory.
FAQ
What is the maximum ambient temperature for continuous 1.0 A operation of the CUS01(TE85L,Q,M)?
The CUS01(TE85L,Q,M) supports 1.0 A average forward current only when junction temperature stays ≤125°C. With Rth(j–a) = 75°C/W on ceramic board, maximum ambient temperature is ~50°C at full load. Derating curves in the datasheet show Ta max drops to 25°C at 1.0 A on glass-epoxy boards - thermal design must match actual PCB construction.
Does the CUS01(TE85L,Q,M) have a specified reverse recovery time?
No - the CUS01(TE85L,Q,M) is a Schottky barrier diode and exhibits no minority-carrier storage, so reverse recovery time is effectively zero. Its switching behavior is governed by junction capacitance (40 pF) and series resistance, making it suitable for high-frequency (>100 kHz) DC–DC converters without snubbing.
Can the CUS01(TE85L,Q,M) be used in automotive infotainment power supplies?
Yes - the CUS01(TE85L,Q,M) operates from −40°C to +125°C and meets JEITA and JEDEC standards for reliability. However, it is not AEC-Q101 qualified; for automotive safety-critical modules, consult Toshiba's AEC-Q101-certified Schottky rectifiers such as the TSD100xx series instead of the CUS01(TE85L,Q,M).
What is the recommended land pattern for the CUS01(TE85L,Q,M) on FR-4 PCB?
Toshiba specifies a 6 mm × 6 mm soldering land for glass-epoxy boards to achieve Rth(j–a) = 150°C/W. For FR-4, use that 6 mm × 6 mm pad centered under the cathode (Pin ②), with thermal vias to inner ground planes. Anode (Pin ①) requires only a 0.8 mm × 0.8 mm pad - oversized anode pads increase parasitic capacitance unnecessarily.
How does the CUS01(TE85L,Q,M) compare to standard PN-junction rectifiers in battery applications?
The CUS01(TE85L,Q,M) provides significantly lower forward voltage (0.37 V vs. ~0.7–1.1 V) than PN rectifiers at 0.7 A, cutting conduction loss by >50%. This extends battery runtime and reduces heat generation in sealed enclosures - a decisive advantage over PN types like 1N400x or BAS21 in portable equipment where efficiency and thermal density matter.
CUS01(TE85L,Q,M) Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Toshiba Semiconductor and Storage
- Series:
- -
- Package/Case:
- SC-76, SOD-323
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Technology:
- Schottky
- Voltage - DC Reverse (Vr) (Max):
- 30 V
- Current - Average Rectified (Io):
- 1A
- Voltage - Forward (Vf) (Max) @ If:
- 390 mV @ 1 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- -
- Current - Reverse Leakage @ Vr:
- 1.5 mA @ 30 V
- Capacitance @ Vr, F:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- US-FLAT (1.25x2.5)
- Operating Temperature - Junction:
- -40°C ~ 125°C
CUS01(TE85L,Q,M) FAQ
1.How can I place an order for CUS01(TE85L,Q,M) through Aetrix?
Please submit a Request for Quotation (RFQ) for CUS01(TE85L,Q,M) 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 CUS01(TE85L,Q,M) reliable?
The price and inventory of CUS01(TE85L,Q,M) are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CUS01(TE85L,Q,M) is usually 5 days.
3.What payment methods are accepted for CUS01(TE85L,Q,M)?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CUS01(TE85L,Q,M) transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CUS01(TE85L,Q,M)?
CUS01(TE85L,Q,M) orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CUS01(TE85L,Q,M) 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 CUS01(TE85L,Q,M)?
For technical support, including CUS01(TE85L,Q,M) datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CUS01(TE85L,Q,M) requirements.
6.How does Aetrix verify that CUS01(TE85L,Q,M) is sourced from the original manufacturer or authorized distributors?
All CUS01(TE85L,Q,M) 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 CUS01(TE85L,Q,M) meets industry standards.
7.What is the process for return or replacement of CUS01(TE85L,Q,M)?
All CUS01(TE85L,Q,M) units undergo pre-shipment inspection (PSI). If there is an issue with CUS01(TE85L,Q,M), 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 CUS01(TE85L,Q,M) part is unused and in its original packaging.
Return procedure for CUS01(TE85L,Q,M):
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
CUS01(TE85L,Q,M) Tags
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