My Inquiry
My Account
Infineon Technologies BAS 40-04 B5003
- Part No.:
- BAS 40-04 B5003
- Manufacturer:
- Infineon Technologies
- Category:
- Diode Arrays
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
BAS 40-04 B5003.pdf
- Description:
- DIODE ARR SCHOTT 40V 120MA SOT23
- Quantity:
- Payment:
- Shipping:
Inventory:2,304
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
BAS40-04 from Nexperia is a silicon Schottky diode in SOT23 package configured as a single discrete diode with 40 V reverse voltage rating, 120 mA forward current, and 250 mW power dissipation at TS ≤ 56 °C, used for high-speed switching and voltage clamping in automotive signal conditioning circuits.
For engineers reviewing the BAS40-04 datasheet, BAS40-04 pinout, BAS40-04 application, or BAS40-04 equivalent, key selection criteria include low forward voltage (310–720 mV at IF = 1–40 mA), fast recovery time (≤100 ps), low capacitance (3–5 pF at VR = 0 V), and AEC-Q101 qualification for automotive-grade reliability.
Technical Context
This Schottky diode operates with metal–semiconductor junction architecture to achieve low forward voltage drop and ultrafast switching, enabling efficient clamping and detection in high-frequency analog and digital signal paths. Its 40 V VR rating supports 24 V automotive supply rail protection, while 100 ps reverse recovery time ensures minimal switching loss in >10 MHz applications.
The device exhibits tight VF matching (ΔVF ≤ 20 mV at IF = 10 mA) in multi-diode configurations and maintains stable IR ≤ 1 µA at VR = 30 V, supporting precision voltage reference and level-shifting functions in sensor interface and CAN bus protection circuits.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reverse Voltage (VR) | 40 V - Supports clamping of transients up to 40 V in 24 V automotive systems without breakdown. |
| Forward Current (IF) | 120 mA - Enables continuous operation in low-power signal routing and ESD protection paths. |
| Forward Voltage (VF) | 310–720 mV @ IF = 1–40 mA - Reduces conduction loss and self-heating in battery-sensitive portable and automotive modules. |
| Diode Capacitance (CT) | 3–5 pF @ VR = 0 V, f = 1 MHz - Minimizes signal distortion in RF detector and high-speed data line clamping. |
| Reverse Recovery Time (τrr) | ≤100 ps - Ensures clean edge integrity in >10 MHz clock and data signal conditioning. |
| Thermal Resistance (RthJS) | 375 K/W - Limits junction temperature rise under pulsed load; requires PCB copper area ≥ 25 mm² for sustained 120 mA operation. |
Pinout & Package
Package: SOT23 - Surface-mount plastic package with 3 terminals, 1.3 mm × 2.9 mm footprint, 1.1 mm height, suitable for automated pick-and-place assembly and reflow soldering per IPC-J-STD-020.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (Pin 1) | Current entry node | Connected to higher-potential side of clamping path; must be routed with low-inductance trace for ESD response. |
| Cathode (Pin 2) | Current exit node | Typically tied to ground or reference rail; serves as clamp return path in TVS-like configurations. |
| NC / Heat Sink (Pin 3) | Non-connected / thermal pad | Not electrically connected; provides mechanical stability and limited thermal conduction to PCB copper. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive applications including engine control units and body electronics per stress test requirements. |
| Low VF matching (ΔVF ≤ 20 mV) | Enables consistent performance across dual-diode arrays in differential signal clamping without calibration. |
| Pb-free, RoHS-compliant | Meets EU Directive 2011/65/EU; compatible with lead-free reflow profiles up to 260 °C peak. |
| ESD-sensitive handling | Requires <100 V HBM ESD controls during assembly; gate oxide integrity preserved only with grounded wrist straps and dissipative mats. |
Applications
| Automotive CAN Bus Protection | High-Speed Signal Detector |
|---|---|
Use Scenario: Clamping transient spikes on CAN_H/CAN_L lines in 12 V vehicle networks exposed to load dump and inductive kick. IC Role / Device Role / Timing Role: Discrete Schottky clamp diode placed between signal line and ground rail to limit voltage excursion to ≤40 V. Use Value: Prevents damage to CAN transceivers by diverting >100 ns pulses with <100 ps response, maintaining ISO 11898-2 compliance. | Use Scenario: Demodulating 10–50 MHz RF carriers in AM receiver front-ends and RFID tag readers. IC Role / Device Role / Timing Role: Passive envelope detector using forward conduction and low CT to preserve carrier fidelity. Use Value: Achieves >40 dB dynamic range with 3–5 pF junction capacitance and sub-1 V VF, minimizing signal attenuation. |
| Low-Power Sensor Interface | Logic-Level Shifter |
Use Scenario: Protecting I²C/SPI lines of MEMS pressure sensors operating from 3.3 V rails in harsh industrial environments. IC Role / Device Role / Timing Role: Bidirectional clamping diode limiting voltage swing to ±0.3 V beyond rail, preventing latch-up. Use Value: Maintains signal integrity below 1 MHz with IR ≤ 1 µA at 30 V reverse bias, eliminating leakage-induced offset drift. | Use Scenario: Level translation between 5 V microcontroller GPIO and 3.3 V peripheral ICs in embedded control boards. IC Role / Device Role / Timing Role: Forward-biased Schottky diode providing ~0.3 V drop to shift logic HIGH threshold down by one VF. Use Value: Enables reliable 5 V → 3.3 V translation without active circuitry, supporting >10 MHz toggle rates due to τrr ≤ 100 ps. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Schottky diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ON Semiconductor NSR0240HT1G | Same 40 V VR, 200 mA IF, but VF = 370 mV typ @ 10 mA; RthJS = 300 K/W vs 375 K/W. | Higher IF rating allows margin in pulsed current designs; lower thermal resistance improves sustained power handling. | Select when board space permits larger SOD-123 footprint and higher continuous current is required. |
| Vishay SD103ATW-7-F | 40 V VR, 200 mA IF, VF = 420 mV typ @ 10 mA; CT = 10 pF - double BAS40-04's capacitance. | Higher CT limits use above 5 MHz; better suited for DC/low-frequency clamping than RF detection. | Prefer for cost-sensitive 24 V power rail clamping where speed is secondary to surge current capability. |
Compared with NSR0240HT1G and SD103ATW-7-F, BAS40-04 offers superior high-frequency performance (lower CT, faster τrr) and tighter VF matching, making it optimal for automotive signal integrity and RF detection-while trading off some current headroom and thermal margin.
Availability
BAS40-04 is available at Aetrix Electronics and suitable for automotive CAN bus protection, high-speed RF detection, and low-power sensor interface applications requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for BAS40-04 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 manufacturing certified to IATF 16949 and ISO 9001 standards.
The BAS40 series belongs to Nexperia's Automotive-Qualified Schottky Diodes product line, engineered specifically for signal integrity, ESD protection, and voltage clamping in 12 V/24 V automotive subsystems.
FAQ
Is BAS40-04 pin-compatible with BAS40-06 or BAS40-05?
No. Although all share the SOT23 package, BAS40-04 has a single-diode configuration with anode-cathode-NC pinout, while BAS40-06 is common-anode dual and BAS40-05 is common-cathode dual. Pin assignments differ per configuration; direct substitution without schematic review will cause functional failure.
What is the maximum allowable PCB temperature (TS) for continuous 120 mA operation?
The datasheet specifies TS ≤ 56 °C for BAS40-04 at full rated IF. Exceeding this requires derating: at TS = 75 °C, IF must be reduced to ≤85 mA per thermal curves in Section 6 of the official Nexperia document rev. 2013-01-11.
Does BAS40-04 support bidirectional clamping like a TVS diode?
No. It is a unidirectional Schottky diode. For bidirectional clamping, two BAS40-04 devices must be connected in series opposition (anode-to-anode or cathode-to-cathode), or a dedicated bidirectional TVS such as PESD5V0S1BA should be used instead.
Can BAS40-04 replace BAT54 in existing designs?
Yes, with verification. Both are SOT23 Schottky diodes with 30 V VR, but BAS40-04 has higher VR (40 V), slightly higher VF (310–720 mV vs 240–600 mV), and AEC-Q101 qualification. Layout and thermal design must confirm compatibility with BAS40-04's 375 K/W RthJS and 56 °C TS limit.
BAS 40-04 B5003 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Series:
- -
- Package/Case:
- TO-236-3, SC-59, SOT-23-3
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Diode Configuration:
- 1 Pair Series Connection
- Technology:
- Schottky
- Voltage - DC Reverse (Vr) (Max):
- 40 V
- Current - Average Rectified (Io) (per Diode):
- 120mA (DC)
- Voltage - Forward (Vf) (Max) @ If:
- 1 V @ 40 mA
- Speed:
- Small Signal =< 200mA (Io), Any Speed
- Reverse Recovery Time (trr):
- 100 ps
- Current - Reverse Leakage @ Vr:
- 1 µA @ 30 V
- Operating Temperature - Junction:
- 150°C (Max)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- PG-SOT23
BAS 40-04 B5003 FAQ
1.How can I place an order for BAS 40-04 B5003 through Aetrix?
Please submit a Request for Quotation (RFQ) for BAS 40-04 B5003 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 BAS 40-04 B5003 reliable?
The price and inventory of BAS 40-04 B5003 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BAS 40-04 B5003 is usually 5 days.
3.What payment methods are accepted for BAS 40-04 B5003?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BAS 40-04 B5003 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BAS 40-04 B5003?
BAS 40-04 B5003 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BAS 40-04 B5003 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 BAS 40-04 B5003?
For technical support, including BAS 40-04 B5003 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BAS 40-04 B5003 requirements.
6.How does Aetrix verify that BAS 40-04 B5003 is sourced from the original manufacturer or authorized distributors?
All BAS 40-04 B5003 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 BAS 40-04 B5003 meets industry standards.
7.What is the process for return or replacement of BAS 40-04 B5003?
All BAS 40-04 B5003 units undergo pre-shipment inspection (PSI). If there is an issue with BAS 40-04 B5003, 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 BAS 40-04 B5003 part is unused and in its original packaging.
Return procedure for BAS 40-04 B5003:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BAS 40-04 B5003 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
Tech Hub
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
LDO regulator guide covering low dropout voltage, power dissipation, thermal design, PSRR, output noise, capacitor stability, adjustable LDO circuits, LDO vs buck converter and datasheet selection chec…
Conditional Access Module guide covering CAM meaning, CI/CI+ interface, smart card authorization, DVB security workflow, TV and set-top box compatibility, internal electronics, ESD protection, connecto…
Guide to electronic component obsolescence covering EOL risk, PCN/PDN notices, last-time buy planning, replacement options, form-fit-function validation, counterfeit risk and BOM lifecycle management.
18650 battery guide covering lithium-ion cell basics, 3.6V/3.7V voltage, 4.2V charging, mAh and Wh capacity, protected cells, chargers, BMS, series-parallel packs, holders, welding and sourcing checks.…
Hall effect sensor guide covering working principle, linear and digital sensors, Arduino circuits, current sensing, speed detection, automotive applications, A3144 examples, signal filtering and datash…
Product Change Notification guide for electronic components, covering PCN meaning, PCN vs PDN/EOL, common change types, risk levels, form-fit-function review, engineering validation, BOM control, LTB/L…
A practical guide to blend door actuators, covering HVAC function, symptoms, location, AC and heater issues, reset and calibration, replacement cost, electrical diagnosis, compatibility checks, and rep…
