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Nexperia USA Inc. BAS40-05-QR
- Part No.:
- BAS40-05-QR
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Diode Arrays
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
BAS40-05-QR.pdf
- Description:
- DIODE ARR SCHOTTKY 40V TO-236AB
- Quantity:
- Payment:
- Shipping:
Inventory:7,756
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Product details
Overview
BAS40-05-QR from Nexperia is a general-purpose dual Schottky diode in SOT23 package, configured as two anodes sharing a common cathode. It delivers 40 V reverse voltage rating, 380 mV forward voltage at 1 mA, 5 pF capacitance at 0 V, 1 µA reverse leakage at 30 V, and AEC-Q101 qualification for automotive signal clamping and high-speed switching circuits.
For engineers reviewing the BAS40-05-QR datasheet, BAS40-05-QR pinout, BAS40-05-QR application, or BAS40-05-QR equivalent, key selection criteria include common-cathode dual-diode topology, low VF/low Cd trade-off, pulsed forward current capability up to 120 mA, and thermal resistance of 500 K/W on FR4 PCB - all critical for compact automotive signal integrity designs.
Technical Context
This dual Schottky diode integrates two independent anode terminals (Pin 1: A1; Pin 2: A2) with a shared cathode (Pin 3: K1/K2), enabling independent clamping or steering paths from two inputs to a common return. Its low 5 pF junction capacitance and sub-400 mV forward drop support >100 MHz switching in ESD protection and level-shifting nodes.
The device operates across −65 °C to +150 °C ambient, with junction temperature limited to 150 °C. Thermal resistance of 500 K/W (junction-to-ambient, FR4, single-sided copper) defines power dissipation limits under continuous conduction, while pulsed ratings (IFRM = 120 mA, IFSM = 200 mA) support transient surge handling in automotive CAN/LIN bus interfaces.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reverse Voltage (VR) | 40 V - sets maximum allowable standoff voltage before breakdown in clamping or blocking applications |
| Forward Voltage (VF) | 380 mV @ 1 mA - enables low-loss signal routing and minimal voltage offset in precision bias networks |
| Reverse Leakage (IR) | 1 µA @ 30 V - ensures negligible DC loading in high-impedance sensing or reference paths |
| Junction Capacitance (Cd) | 5 pF @ 0 V, 1 MHz - supports <1 ns rise-time preservation in RF detector and fast-switching logic interfaces |
| Thermal Resistance (Rth(j-a)) | 500 K/W - defines 120 mW max continuous power dissipation on standard FR4 layout without heatsinking |
| AEC-Q101 Qualified | Qualified per Automotive Electronics Council stress test standard - validated for under-hood and infotainment module deployment |
Pinout & Package
SOT23 (TO-236AB) plastic surface-mount package: 3-terminal, 1.9 mm pitch, 2.9 mm × 1.3 mm × 1.0 mm body, tin-plated leads, compatible with reflow and wave soldering per IPC-7095.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Anode (Diode 1) | Input node for first Schottky path; connects to signal source requiring clamping or steering |
| 2 | Anode (Diode 2) | Independent input node for second Schottky path; enables dual-input OR-ing or redundancy |
| 3 | Common Cathode (K1/K2) | Shared output/return node; simplifies PCB routing and reduces component count in dual-signal protection |
Key Features
| Feature | Design Value |
|---|---|
| Common-cathode dual configuration | Reduces footprint vs. discrete diode pairs; enables compact dual-rail clamping in space-constrained ECUs |
| Low 5 pF capacitance | Maintains signal integrity above 100 MHz in USB 2.0 data lines and LIN bus transceiver I/O |
| 380 mV VF at 1 mA | Minimizes voltage drop in low-current bias networks for op-amp input protection and sensor interface rails |
| AEC-Q101 qualification | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD robustness |
Applications
| Automotive LIN Bus Protection | USB 2.0 Data Line Clamping |
|---|---|
Use Scenario: Protects LIN transceiver I/O pins against load-dump transients and ESD events in body control modules. IC Role / Device Role / Timing Role: Dual-anode clamping diode shunting overvoltage to ground rail via common cathode. Use Value: 40 V VR withstands ISO 7637-2 Pulse 1/2a; 5 pF Cd avoids signal distortion on 20.25 kbaud LIN signals. | Use Scenario: Suppresses ESD and overshoot on D+ and D− lines in USB 2.0 host ports. IC Role / Device Role / Timing Role: Common-cathode dual diode provides bidirectional clamping to VDD and GND rails. Use Value: Sub-400 mV VF ensures minimal insertion loss; 120 mA pulsed IF handles IEC 61000-4-2 ±8 kV contact discharge. |
| Op-Amp Input Protection Network | Dual-Rail Signal Level Shifting |
Use Scenario: Guards precision op-amp inputs against overvoltage during hot-plug or fault conditions. IC Role / Device Role / Timing Role: Anodes connected to differential inputs; cathode tied to supply rail for rail-to-rail clamping. Use Value: 1 µA IR prevents input bias current error; 380 mV VF preserves common-mode range in low-voltage sensors. | Use Scenario: Translates logic signals between 3.3 V and 5 V domains in mixed-voltage microcontroller systems. IC Role / Device Role / Timing Role: One anode on 3.3 V side, other on 5 V side, cathode at intermediate reference voltage. Use Value: Low VF minimizes translation threshold uncertainty; dual structure eliminates need for two separate diodes. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual Schottky diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ON Semiconductor NSR0230HT1G | Single diode, SOD-123 package, 30 V VR, 450 mV VF @ 10 mA | Requires two devices for dual-path function; higher VF increases power loss in low-current bias | Select when board area allows discrete placement and 30 V rating suffices |
| Vishay SD103ATW-7-F | Dual common-cathode, SOT-23, 40 V VR, 600 mV VF @ 10 mA, 10 pF Cd | Higher capacitance degrades >50 MHz signal fidelity; higher VF reduces margin in low-VDD systems | Select only if cost sensitivity outweighs RF performance and low-VF requirements |
Compared with NSR0230HT1G and SD103ATW-7-F, BAS40-05-QR uniquely balances 40 V rating, 380 mV VF, and 5 pF Cd in a single SOT23 dual-diode package - making it optimal for space-constrained, high-frequency automotive signal conditioning where both clamping accuracy and bandwidth matter.
Availability
BAS40-05-QR is available at Aetrix Electronics and suitable for automotive LIN bus protection, USB 2.0 clamping, op-amp input guarding, and dual-rail level shifting requiring stable component supply and AEC-Q101 compliance.
Supply support for BAS40-05-QR 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
Nexperia is a global semiconductor expert focused on high-volume, high-reliability discrete and logic devices, with leadership in automotive-qualified components and advanced packaging.
The BAS40 series targets general-purpose Schottky applications demanding low VF, low Cd, and automotive qualification - specifically engineered for signal integrity in harsh-environment communication interfaces and power management subsystems.
FAQ
What is the maximum continuous forward current for BAS40-05-QR?
The maximum continuous forward current is 120 mA, defined under steady-state conditions at Tamb = 25 °C. This rating assumes adequate PCB copper area for heat dissipation; derating is required above 25 °C ambient per the 500 K/W thermal resistance and 150 °C max junction temperature limit.
Can BAS40-05-QR be used in AC signal rectification?
No - BAS40-05-QR is optimized for high-speed switching and clamping, not power rectification. Its 120 mA continuous rating and lack of specified average forward current make it unsuitable for mains-frequency or high-duty-cycle rectifier applications; use dedicated power Schottky diodes instead.
Is the common cathode internally bonded or externally accessible?
Pin 3 is the externally accessible common cathode terminal (K1/K2), physically bonded together inside the SOT23 package. Both diodes share this single metalized pad, confirmed by the pinning diagram and package outline - enabling direct connection to ground or supply rail without internal splitting.
Does BAS40-05-QR support lead-free reflow soldering?
Yes - the device uses tin-plated leads and is qualified for standard Pb-free reflow profiles per J-STD-020. The recommended peak temperature is 260 °C for ≤ 30 seconds, with preheat ramp rates and soak times aligned to IPC/JEDEC specifications for SOT23 packages.
BAS40-05-QR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- -
- Package/Case:
- TO-236-3, SC-59, SOT-23-3
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Diode Configuration:
- 1 Pair Common Cathode
- Technology:
- Schottky
- Voltage - DC Reverse (Vr) (Max):
- 40 V
- Current - Average Rectified (Io) (per Diode):
- 120mA
- Voltage - Forward (Vf) (Max) @ If:
- 1 V @ 40 mA
- Speed:
- Small Signal =< 200mA (Io), Any Speed
- Reverse Recovery Time (trr):
- -
- Current - Reverse Leakage @ Vr:
- 10 µA @ 40 V
- Operating Temperature - Junction:
- 150°C
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- TO-236AB
BAS40-05-QR FAQ
1.How can I place an order for BAS40-05-QR through Aetrix?
Please submit a Request for Quotation (RFQ) for BAS40-05-QR 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 BAS40-05-QR reliable?
The price and inventory of BAS40-05-QR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BAS40-05-QR is usually 5 days.
3.What payment methods are accepted for BAS40-05-QR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BAS40-05-QR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BAS40-05-QR?
BAS40-05-QR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BAS40-05-QR 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 BAS40-05-QR?
For technical support, including BAS40-05-QR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BAS40-05-QR requirements.
6.How does Aetrix verify that BAS40-05-QR is sourced from the original manufacturer or authorized distributors?
All BAS40-05-QR 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 BAS40-05-QR meets industry standards.
7.What is the process for return or replacement of BAS40-05-QR?
All BAS40-05-QR units undergo pre-shipment inspection (PSI). If there is an issue with BAS40-05-QR, 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 BAS40-05-QR part is unused and in its original packaging.
Return procedure for BAS40-05-QR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BAS40-05-QR Tags
-
BAV99-7-F
Diodes Incorporated
-
BAT54C-7-F
Diodes Incorporated
-
BAV99,215
Nexperia USA Inc.
-
BAT54SLT1G
onsemi
-
BAV70LT1G
onsemi
-
BAT54CLT1G
onsemi
-
BAT54S-7-F
Diodes Incorporated
-
BAV99LT1G
onsemi
-
BAT54S,215
Nexperia USA Inc.
-
BAS40-04LT1G
onsemi
-
MMBD1503-TP
Micro Commercial Co
-
BAV99WT1G
onsemi
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