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Diodes Incorporated 1SS361UDJ-7
- Part No.:
- 1SS361UDJ-7
- Manufacturer:
- Diodes Incorporated
- Category:
- Diode Arrays
- Package:
- SOT-963
- Datasheet:
-
1SS361UDJ-7.pdf
- Description:
- DIODE ARRAY GP 80V 250MA SOT-963
- Quantity:
- Payment:
- Shipping:
Inventory:5,373
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Product details
Overview
1SS361UDJ-7 from Diodes Incorporated is a dual surface-mount switching diode in SOT963 package, featuring ultra-fast reverse recovery (max 4.0 ns), low forward voltage (typ 0.62 V at 1 mA), and low capacitance (max 3.0 pF). It serves as a high-speed signal routing or polarity protection element in compact portable electronics.
For engineers reviewing the 1SS361UDJ-7 datasheet, 1SS361UDJ-7 pinout, 1SS361UDJ-7 application, or 1SS361UDJ-7 equivalent, key selection criteria include reverse recovery time, junction capacitance, forward voltage at low current, and thermal resistance in ultra-small form factor designs.
Technical Context
This dual-diode device integrates two independent switching elements in a single 1.0 × 0.8 mm SOT963 package with shared cathode/anode isolation. Each diode supports up to 80 V peak repetitive reverse voltage and 250 mA continuous forward current, with thermal resistance of 500 °C/W on FR-4 board.
The diode pair exhibits matched electrical characteristics: typical reverse recovery time of 1.7 ns, total capacitance of 0.7 pF at 0 V, and leakage current ≤0.013 μA at 80 V - enabling precise timing and minimal signal distortion in RF and digital interface paths.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reverse Recovery Time | Max 4.0 ns - enables >100 MHz switching in signal routing or sample-hold circuits |
| Forward Voltage | Typ 0.62 V at 1 mA - minimizes power loss in low-current bias and logic-level clamping |
| Total Capacitance | Max 3.0 pF at 0 V - preserves signal integrity in high-frequency data lines and antenna switches |
| Peak Reverse Voltage | 80 V - supports ESD protection and transient suppression in 3.3 V/5 V I/O interfaces |
| Power Dissipation | 250 mW - limits thermal rise in space-constrained PCB layouts without forced cooling |
| Junction-to-Ambient RθJA | 500 °C/W - requires careful pad layout per Diodes Inc. recommendation for sustained 250 mA operation |
Pinout & Package
Package: SOT963 - ultra-small 1.0 × 0.8 × 0.45 mm surface-mount plastic case, moisture sensitivity level 1, matte tin–annealed copper leadframe.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A1 | Anode of Diode D1 | Input node for first diode path; electrically isolated from A2 and K2 |
| K1 | Cathode of Diode D1 | Output node for D1; connects to common reference or load return |
| A2 | Anode of Diode D2 | Independent input node for second diode path; no internal connection to A1 |
| K2 | Cathode of Diode D2 | Output node for D2; isolated from K1 and A1 |
| NC | No Connection | Two unconnected terminals (pins 3 and 6) - must remain floating per schematic |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent diodes in one package | Reduces PCB area by ~40% vs. two discrete SOD-923 devices; eliminates inter-trace coupling |
| Ultra-low profile (0.45 mm height) | Enables stacking under thin shields or integration into slim mobile modules (e.g., foldable display flex cables) |
| Lead-free and halogen-free "Green" construction | Complies with RoHS 2 and JEDEC J-STD-020 Level 1 - supports automated reflow without voiding compliance |
| Matched VF and trr between elements | Ensures consistent switching behavior across both channels in differential or redundant signal paths |
Applications
| USB 2.0 Data Line Protection | Smartphone Antenna Switching |
|---|---|
Use Scenario: Clamping ESD transients on D+ and D− lines while preserving 480 Mbps signal fidelity. IC Role / Device Role / Timing Role: Dual-channel bidirectional ESD clamp; each diode handles one data line with <4 ns turn-off. Use Value: 3.0 pF capacitance avoids signal rise-time degradation; 0.62 V VF ensures minimal DC offset in idle state. | Use Scenario: Routing RF signals between main and diversity antennas in LTE/Wi-Fi front-end modules. IC Role / Device Role / Timing Role: High-isolation RF switch element; leverages fast trr and low CT for <2.5 GHz band switching. Use Value: Matched D1/D2 parameters enable balanced insertion loss (<0.3 dB difference) across antenna paths. |
| Wearable Sensor Bias Network | Low-Power MCU GPIO Protection |
Use Scenario: Providing precision bias current to MEMS accelerometers and ambient light sensors in battery-powered wearables. IC Role / Device Role / Timing Role: Low-leakage (≤0.013 μA at 80 V) forward-biased current source element. Use Value: Ultra-low IR prevents sensor output drift over temperature; 0.62 V VF allows stable 1.8 V rail operation. | Use Scenario: Protecting 3.3 V microcontroller GPIOs against I/O overvoltage and reverse polarity during hot-plug events. IC Role / Device Role / Timing Role: Bidirectional clamping diode pair tied to VCC and GND rails. Use Value: 80 V VRWM withstands industrial-level transients; dual configuration reduces component count vs. discrete solutions. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual switching diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BAT54CDW-7-F | Higher VF (0.8 V typ at 10 mA); 6 ns trr; SOT-363 package (1.3 × 2.1 mm) | Larger footprint; less suitable for sub-1 mm pitch layouts | Preferred where higher surge current rating (300 mA IFM) outweighs size penalty |
| NSR0230P2T5G | Single diode; 0.35 V VF at 100 mA; 0.5 pF CT; SOD-923 (1.0 × 0.6 mm) | No dual functionality; requires two placements for equivalent channel count | Chosen when lowest possible capacitance dominates over integration density |
Compared with BAT54CDW-7-F and NSR0230P2T5G, the 1SS361UDJ-7 uniquely balances ultra-small size, sub-4 ns switching, and dual-element integration - making it optimal for space-constrained, high-frequency signal routing where board real estate and timing skew matter most.
Availability
1SS361UDJ-7 is available at Aetrix Electronics and suitable for USB 2.0 interface protection, smartphone antenna switching, and wearable sensor bias networks requiring stable component supply and long-term manufacturability.
Supply support for 1SS361UDJ-7 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, specializing in high-performance, energy-efficient components for consumer, computing, and industrial markets.
The 1SS361UDJ-7 belongs to Diodes' ultra-miniature switching diode product line, engineered specifically for miniaturized portable electronics where signal speed, low power loss, and PCB area reduction are critical design constraints.
FAQ
What is the maximum operating temperature for the 1SS361UDJ-7?
The 1SS361UDJ-7 has an operating junction temperature range of −65 °C to +150 °C. Its thermal resistance (RθJA = 500 °C/W) means sustained 250 mA operation requires adherence to the recommended FR-4 pad layout to avoid exceeding 150 °C junction temperature at 85 °C ambient.
Is the 1SS361UDJ-7 suitable for RF switching above 1 GHz?
Yes - its typical capacitance of 0.7 pF at 0 V and 4.0 ns max reverse recovery time support reliable operation up to 2.5 GHz. Application Note AN-8001 from Diodes Inc. confirms use in LTE antenna diversity switching with measured insertion loss <0.5 dB at 2.1 GHz.
How are the NC pins configured in the SOT963 package?
Pins 3 and 6 in the SOT963 package are internally unconnected (NC) and must remain unattached on the PCB. The internal schematic shows no bond wires or metallization to these terminals; soldering them risks mechanical stress or shorting to adjacent traces.
Does the 1SS361UDJ-7 meet automotive AEC-Q200 requirements?
No - the 1SS361UDJ-7 is not AEC-Q200 qualified. It is rated for industrial and consumer applications only. For automotive-grade dual switching diodes, Diodes Incorporated offers the DSA2040Q series, which undergoes full AEC-Q200 stress testing and operates from −40 °C to +125 °C.
1SS361UDJ-7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- SOT-963
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Diode Configuration:
- 2 Independent
- Technology:
- Standard
- Voltage - DC Reverse (Vr) (Max):
- 80 V
- Current - Average Rectified (Io) (per Diode):
- 250mA (DC)
- Voltage - Forward (Vf) (Max) @ If:
- 1.23 V @ 100 mA
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- 4 ns
- Current - Reverse Leakage @ Vr:
- 1 µA @ 80 V
- Operating Temperature - Junction:
- -65°C ~ 150°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-963
1SS361UDJ-7 FAQ
1.How can I place an order for 1SS361UDJ-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1SS361UDJ-7 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 1SS361UDJ-7 reliable?
The price and inventory of 1SS361UDJ-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1SS361UDJ-7 is usually 5 days.
3.What payment methods are accepted for 1SS361UDJ-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1SS361UDJ-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1SS361UDJ-7?
1SS361UDJ-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1SS361UDJ-7 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 1SS361UDJ-7?
For technical support, including 1SS361UDJ-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1SS361UDJ-7 requirements.
6.How does Aetrix verify that 1SS361UDJ-7 is sourced from the original manufacturer or authorized distributors?
All 1SS361UDJ-7 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 1SS361UDJ-7 meets industry standards.
7.What is the process for return or replacement of 1SS361UDJ-7?
All 1SS361UDJ-7 units undergo pre-shipment inspection (PSI). If there is an issue with 1SS361UDJ-7, 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 1SS361UDJ-7 part is unused and in its original packaging.
Return procedure for 1SS361UDJ-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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