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Microchip Technology UPS140/TR7
- Part No.:
- UPS140/TR7
- Manufacturer:
- Microchip Technology
- Category:
- Single Diodes
- Package:
- DO-216AA
- Datasheet:
-
UPS140/TR7.pdf
- Description:
- DIODE SCHOTTKY 40V 1A POWERMITE
- Quantity:
- Payment:
- Shipping:
Inventory:5,495
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Product details
Overview
UPS140/TR7 from Diodes Incorporated is a surface-mount 1.0 A, 40 V Schottky barrier rectifier in Powermite™ (DO-216AA) package, featuring VF = 0.45 V at IF = 1.0 A, thermal resistance Rθj-tab = 15 °C/W, and low-profile height ≤1.1 mm - optimized for reverse battery protection and OR-ing in portable battery-powered systems including cordless phones, notebook computers, and PCMCIA cards.
For engineers reviewing the UPS140/TR7 datasheet, UPS140/TR7 pinout, UPS140/TR7 application, or UPS140/TR7 equivalent, key selection criteria include forward voltage drop at rated current, junction-to-tab thermal resistance, peak repetitive reverse voltage rating, and compatibility with high-density PCB layouts requiring minimal footprint and low profile.
Technical Context
The UPS140/TR7 implements a planar Schottky barrier structure on silicon die mounted directly onto an exposed cathode metal tab, enabling low VF and efficient heat dissipation. Its DO-216AA mechanical outline complies with JEDEC standards and supports reflow soldering up to 260°C for 10 seconds.
Designed specifically for DC-DC conversion stages and supply redundancy circuits, it delivers 50 A non-repetitive surge capability and 10,000 V/µs dv/dt rating - critical for transient immunity in compact power rails where fast switching and low conduction loss are prioritized over ultra-low leakage.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Repetitive Reverse Voltage | 40 V - defines maximum allowable blocking voltage in AC/DC front-end or reverse-polarity protection without breakdown |
| Average Forward Current (TC = 135°C) | 1.0 A - continuous DC output current capability when mounted on thermally adequate copper area |
| Forward Voltage (IF = 1.0 A, TJ = 25°C) | 0.45 V - enables >92% efficiency in 3.3 V or 5 V synchronous-buck secondary-side rectification |
| Junction-to-Tab Thermal Resistance | 15 °C/W - allows direct thermal coupling to PCB ground plane or heatsink for sustained 1 A operation |
| Package Footprint Area | 8.45 mm² - fits within tight spacing constraints typical of mobile device power modules |
| Maximum Height | 1.1 mm - supports ultra-thin stacking in clamshell-style handheld enclosures |
Pinout & Package
UPS140/TR7 uses the Powermite™ (JEDEC DO-216AA) surface-mount package: molded epoxy case with exposed cathode tab (pin 1), anode lead (pin 2), and no internal isolation - designed for direct thermal anchoring via cathode pad.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (Exposed Tab) | Current return path & primary thermal interface | Must be soldered to ≥100 mm² copper pour for Rθj-amb ≤ 60 °C/W; electrically connects to system ground or negative rail |
| Anode (Lead) | Input current entry point | Connected to input source (e.g., battery+, converter output); polarity-sensitive for reverse protection function |
Key Features
| Feature | Design Value |
|---|---|
| Low forward voltage (VF = 0.45 V @ 1 A) | Reduces conduction loss by ~30% vs. comparable 1 A Si diodes, extending runtime in battery-fed 3.3 V logic rails |
| Exposed cathode thermal path (Rθj-tab = 15 °C/W) | Enables 1 A continuous operation without external heatsink when mounted on ≥2 oz copper with 200 mm² thermal pad |
| DO-216AA package footprint (8.45 mm²) | Replaces SMA in space-constrained designs while maintaining identical thermal performance and solderability |
| 1.1 mm max height | Permits integration beneath stacked connectors or display flex cables in sub-10 mm-thick consumer devices |
Applications
| Battery-Powered Portable Devices | DC-DC Converter Secondary Side |
|---|---|
Use Scenario: Reverse polarity protection in USB-powered accessories and single-cell Li-ion battery inputs. IC Role / Device Role / Timing Role: Unidirectional current gate preventing damage during incorrect battery insertion or hot-swap events. Use Value: 0.45 V VF minimizes voltage drop across protection path, preserving >98% of available battery voltage at 1 A load. | Use Scenario: Output rectification in 5 V → 3.3 V buck converters for microcontroller power domains. IC Role / Device Role / Timing Role: High-frequency freewheeling diode replacing synchronous MOSFETs where cost or layout simplicity is prioritized. Use Value: 10,000 V/µs dv/dt rating ensures stable operation under fast-switching transients common in 500 kHz–1 MHz converters. |
| OR-ing of Dual Power Sources | PCMCIA/CardBus Power Management |
Use Scenario: Seamless switchover between wall adapter and backup battery in always-on embedded gateways. IC Role / Device Role / Timing Role: Low-VF diode enabling "wire-OR" configuration without active control circuitry. Use Value: 15 °C/W Rθj-tab allows parallel mounting of two UPS140/TR7 units on shared thermal pad for 2 A combined capacity with <5°C junction rise. | Use Scenario: Hot-plug power sequencing and overvoltage clamping in PCMCIA Type II card slots. IC Role / Device Role / Timing Role: Clamp diode limiting transient overshoot during card insertion/removal events. Use Value: 40 V VR rating matches standard 3.3 V/5 V dual-rail PCMCIA specs while surviving ±15 V ESD spikes per IEC 61000-4-2. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Schottky rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SS14 (ON Semiconductor) | Same 40 V VR, 1 A IO rating but SMA package (12.7 mm² footprint, 2.7 mm height); VF = 0.5 V @ 1 A | Larger board area required; less suitable for ultra-thin profiles; higher Rθj-amb (65 °C/W) | Select SS14 only if legacy SMA footprint reuse is mandatory and height constraint >2.5 mm |
| RB050M-40 (ROHM) | DO-214AC (SMA) package; VF = 0.43 V @ 1 A; VR = 40 V; Rθj-amb = 60 °C/W | Lower VF but no exposed thermal tab; requires larger copper area for equivalent thermal performance | Choose RB050M-40 when lowest possible VF is critical and thermal pad area is unrestricted |
Compared with SS14 and RB050M-40, the UPS140/TR7 uniquely combines DO-216AA's 50% smaller footprint, 1.1 mm height, and direct cathode thermal path - making it the only option supporting 1 A continuous operation in sub-1.2 mm-thick portable assemblies without sacrificing thermal margin.
Availability
UPS140/TR7 is available at Aetrix Electronics and suitable for battery protection, DC-DC secondary rectification, OR-ing circuits, and PCMCIA power management requiring stable component supply and long-term manufacturability.
Supply support for UPS140/TR7 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
Diodes Incorporated is a global manufacturer of discrete semiconductors and analog ICs, headquartered in Plano, Texas, with design and manufacturing operations across Asia and the Americas.
The UPS140/TR7 belongs to Diodes' Powermite™ Schottky rectifier family, engineered specifically for space- and thermally constrained battery-powered applications where low VF, minimal profile, and direct thermal conduction are essential.
FAQ
What is the maximum junction temperature rating for the UPS140/TR7?
The UPS140/TR7 has a maximum operating junction temperature (TJ) of 125°C, as specified in its absolute maximum ratings table. This limit applies under steady-state conditions with proper thermal management - such as mounting the exposed cathode tab to sufficient copper area. Exceeding 125°C risks irreversible degradation of the Schottky barrier. The UPS140/TR7 must be derated above ambient temperatures where TJ would otherwise exceed this threshold, especially at full 1 A load.
Does the UPS140/TR7 support lead-free reflow soldering processes?
Yes, the UPS140/TR7 is qualified for lead-free reflow soldering with a maximum peak temperature of 260°C for 10 seconds, per its mechanical characteristics. Its epoxy molding compound meets UL94 V-0 flammability rating at 1/8" thickness, and the device marking "S40" remains legible post-reflow. The UPS140/TR7's DO-216AA package is fully compatible with standard J-STD-020-compliant thermal profiles used in high-volume SMT assembly lines.
How does the thermal performance of UPS140/TR7 compare to SMA-packaged Schottky diodes?
The UPS140/TR7 achieves Rθj-tab = 15 °C/W via its exposed cathode tab - matching the thermal performance of many SMA-packaged Schottky diodes despite being 50% smaller in footprint. Unlike SMA parts that rely on lead-frame conduction, the UPS140/TR7 conducts heat directly from the die into the PCB through the cathode pad. This makes the UPS140/TR7 more effective in thermally dense layouts where copper area is allocated to the cathode rather than leads, provided the pad is adequately sized and plated.
Can UPS140/TR7 be used in reverse-battery protection circuits for 3.3 V systems?
Yes, the UPS140/TR7 is commonly deployed in reverse-battery protection for 3.3 V systems due to its low 0.45 V forward voltage at 1 A - resulting in only ~13% voltage loss at full load. Its 40 V VR rating provides ample margin against transients, and its 50 A IFSM handles accidental short-circuit surges. In such configurations, the cathode connects to the system ground and the anode to the battery input, ensuring conduction only during correct polarity. The UPS140/TR7's compact size also simplifies placement near battery connectors.
What is the device marking code for UPS140/TR7?
Each UPS140/TR7 unit is laser-marked with "S40" on the top surface of the molded epoxy case, per the mechanical characteristics section of the official datasheet. This marking identifies the device as the 40 V variant within the UPS1xx Schottky rectifier series and is visible after standard SMT reflow. The "S40" code is consistent across all reels and batches of UPS140/TR7 and serves as the primary visual identifier for inspection and traceability purposes.
UPS140/TR7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- DO-216AA
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- Technology:
- Schottky
- Voltage - DC Reverse (Vr) (Max):
- 40 V
- Current - Average Rectified (Io):
- 1A
- Voltage - Forward (Vf) (Max) @ If:
- 450 mV @ 1 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- -
- Current - Reverse Leakage @ Vr:
- 400 µA @ 40 V
- Capacitance @ Vr, F:
- 70pF @ 5V, 1MHz
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- Powermite
- Operating Temperature - Junction:
- -55°C ~ 125°C
UPS140/TR7 FAQ
1.How can I place an order for UPS140/TR7 through Aetrix?
Please submit a Request for Quotation (RFQ) for UPS140/TR7 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 UPS140/TR7 reliable?
The price and inventory of UPS140/TR7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for UPS140/TR7 is usually 5 days.
3.What payment methods are accepted for UPS140/TR7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for UPS140/TR7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for UPS140/TR7?
UPS140/TR7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your UPS140/TR7 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 UPS140/TR7?
For technical support, including UPS140/TR7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your UPS140/TR7 requirements.
6.How does Aetrix verify that UPS140/TR7 is sourced from the original manufacturer or authorized distributors?
All UPS140/TR7 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 UPS140/TR7 meets industry standards.
7.What is the process for return or replacement of UPS140/TR7?
All UPS140/TR7 units undergo pre-shipment inspection (PSI). If there is an issue with UPS140/TR7, 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 UPS140/TR7 part is unused and in its original packaging.
Return procedure for UPS140/TR7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
UPS140/TR7 Tags
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