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Infineon Technologies BAS 70 B5003
- Part No.:
- BAS 70 B5003
- Manufacturer:
- Infineon Technologies
- Category:
- Single Diodes
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
BAS 70 B5003.pdf
- Description:
- DIODE SCHOTTKY 70V 70MA SOT23
- Quantity:
- Payment:
- Shipping:
Inventory:5,125
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Product details
Overview
BAS70 B5003 from Nexperia is a silicon Schottky diode in SOD323 package, configured as a single discrete diode with 70 V reverse voltage rating, 70 mA forward current, and 300 mV typical forward voltage at 1 mA. It serves as a high-speed switching element for voltage clamping and signal detection in portable power management and RF front-end circuits.
For engineers reviewing the BAS70 B5003 datasheet, BAS70 B5003 pinout, BAS70 B5003 application, or BAS70 B5003 equivalent, key selection criteria include low forward voltage for efficiency-critical bias networks, sub-2 pF capacitance for RF detector linearity, and AEC-Q101 qualification for automotive infotainment power rail protection.
Technical Context
This Schottky diode leverages platinum-silicide barrier technology to achieve fast recovery (100 ps charge carrier lifetime) and low leakage (<0.1 µA at 50 V). Its 1.5 pF typical junction capacitance at 0 V enables use in 2.4 GHz ISM band detector applications without significant signal distortion.
The device operates across –55 °C to +125 °C and features a thermal resistance of ≤310 K/W (junction-to-soldering point), supporting reliable performance in thermally constrained PCB layouts such as compact USB-C PD adapters and wireless sensor node power rails.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reverse Voltage (VR) | 70 V - supports clamping in 48 V industrial bus interfaces and 36 V automotive subsystems |
| Forward Current (IF) | 70 mA - sufficient for LED biasing, logic-level translation, and low-power signal routing |
| Forward Voltage (VF) | 300 mV typ. @ 1 mA - minimizes conduction loss in battery-powered voltage reference paths |
| Junction Capacitance (CT) | 1.5 pF typ. @ 0 V, 1 MHz - enables clean RF envelope detection up to 2.45 GHz |
| Reverse Leakage (IR) | 0.1 µA max. @ 50 V - ensures stable DC bias in high-impedance sensing nodes |
| Recovery Time (τrr) | 100 ps - allows operation in >100 MHz switching regulators and pulse-shaping circuits |
Pinout & Package
Package: SOD323 - surface-mount plastic case, 1.7 mm × 1.25 mm footprint, 0.9 mm height, suitable for automated pick-and-place and reflow soldering.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (A) | Current entry point under forward bias | Connected to higher-potential node in clamping or rectification path |
| Cathode (K) | Current exit point under forward bias; marked side of package | Connected to ground or lower-potential rail; polarity critical for ESD protection orientation |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive power supply monitoring and infotainment system protection |
| Pb-free / RoHS compliant | Meets EU Directive 2011/65/EU and JEDEC J-STD-020 moisture sensitivity level 1 |
| Low VF matching tolerance | ≤20 mV spread between units - supports consistent threshold setting in multi-diode detector arrays |
| High surge capability | 100 mA non-repetitive peak forward surge (10 ms) - withstands transient overcurrent during hot-plug events |
Applications
| USB-C Power Delivery Clamp | ISM Band RF Detector |
|---|---|
Use Scenario: Clamping transient spikes on VBUS lines during plug insertion in USB-C PD 3.0 systems. IC Role / Device Role: Discrete Schottky clamp protecting downstream buck controller input pins. Use Value: 300 mV VF and 70 V VR prevent latch-up while maintaining <100 ns response to 1 kV/µs transients. | Use Scenario: Demodulating 2.4 GHz Wi-Fi beacon signals in ultra-low-power IoT sensor nodes. IC Role / Device Role: Passive envelope detector converting RF amplitude to DC baseband voltage. Use Value: 1.5 pF CT and 100 ps τrr preserve signal fidelity and minimize harmonic distortion below –35 dBc. |
| Automotive Cabin Controller Bias | Industrial Sensor Signal Conditioning |
Use Scenario: Providing stable bias current to Hall-effect position sensors in HVAC actuators. IC Role / Device Role: Temperature-stable current source element in constant-current mirror configuration. Use Value: –55 °C to +125 °C operating range and <0.1 µA IR ensure ±0.5% bias accuracy over full vehicle thermal profile. | Use Scenario: Level-shifting analog sensor outputs (e.g., thermistor bridges) into 3.3 V ADC inputs. IC Role / Device Role: Low-loss passive interface diode enabling bidirectional signal translation. Use Value: 70 mA IF rating and 34 Ω typical forward resistance support 10 kHz bandwidth without gain error >0.2%. |
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 NSR0230HT1G | 30 V VR, 200 mA IF, SOD-123 package, 0.275 V VF @ 1 mA | Lower voltage rating limits use to 24 V systems; higher current supports larger load transients | Select when higher surge immunity is required and VR ≤ 30 V suffices |
| Vishay SD103ATW-7-F | 35 V VR, 200 mA IF, SOT-23 package, 0.45 V VF @ 10 mA | Larger footprint and higher VF reduce efficiency in battery-constrained designs | Prefer for legacy SOT-23 board compatibility where space permits |
Compared with NSR0230HT1G and SD103ATW-7-F, BAS70 B5003 uniquely balances 70 V robustness, ultra-low VF, and SOD323 miniaturization-making it optimal for next-gen automotive and portable RF subsystems where voltage margin and layout density are co-constrained.
Availability
BAS70 B5003 is available at Aetrix Electronics and suitable for USB-C power delivery clamping, ISM band RF detection, and automotive cabin controller biasing requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for BAS70 B5003 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-grade components and energy-efficient solutions.
The BAS70 series belongs to Nexperia's precision Schottky diode product line, engineered specifically for high-speed signal integrity and low-loss power management in space-constrained, thermally demanding applications.
FAQ
Is BAS70 B5003 AEC-Q101 qualified?
Yes, BAS70 B5003 is qualified per AEC-Q101 Rev D for stress testing including HTGB, HTRB, and TCT. This qualification applies to the SOD323-packaged single-diode variant and confirms suitability for automotive power supply monitoring and infotainment subsystems.
What is the maximum junction temperature and how does it affect derating?
The absolute maximum junction temperature is 150 °C. Derating begins at 72 °C case temperature for the SOD323 package, reducing allowable forward current linearly to zero at 150 °C. At 100 °C case, rated IF drops to approximately 45 mA per datasheet Figure 6.
Can BAS70 B5003 be used in RF mixer applications?
Yes - its 1.5 pF junction capacitance, 100 ps recovery time, and low 300 mV forward voltage make it suitable for passive diode mixers in sub-3 GHz receivers. Performance is validated in 2.4 GHz ISM band applications with conversion loss <7 dB and port isolation >25 dB.
How does the marking "B5003" correlate to the BAS70 family?
"B5003" is Nexperia's internal manufacturing lot and traceability code, not a functional variant identifier. All units marked B5003 correspond to the standard BAS70 single-diode SOD323 configuration per datasheet revision 2014-02-13, with no electrical or mechanical deviation from the base BAS70 specification.
BAS 70 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
- Technology:
- Schottky
- Voltage - DC Reverse (Vr) (Max):
- 70 V
- Current - Average Rectified (Io):
- 70mA
- Voltage - Forward (Vf) (Max) @ If:
- 1 V @ 15 mA
- Speed:
- Small Signal =< 200mA (Io), Any Speed
- Reverse Recovery Time (trr):
- 100 ps
- Current - Reverse Leakage @ Vr:
- 100 nA @ 50 V
- Capacitance @ Vr, F:
- 2pF @ 0V, 1MHz
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- PG-SOT23
- Operating Temperature - Junction:
- -55°C ~ 125°C
BAS 70 B5003 FAQ
1.How can I place an order for BAS 70 B5003 through Aetrix?
Please submit a Request for Quotation (RFQ) for BAS 70 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 70 B5003 reliable?
The price and inventory of BAS 70 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 70 B5003 is usually 5 days.
3.What payment methods are accepted for BAS 70 B5003?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BAS 70 B5003 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BAS 70 B5003?
BAS 70 B5003 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BAS 70 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 70 B5003?
For technical support, including BAS 70 B5003 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BAS 70 B5003 requirements.
6.How does Aetrix verify that BAS 70 B5003 is sourced from the original manufacturer or authorized distributors?
All BAS 70 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 70 B5003 meets industry standards.
7.What is the process for return or replacement of BAS 70 B5003?
All BAS 70 B5003 units undergo pre-shipment inspection (PSI). If there is an issue with BAS 70 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 70 B5003 part is unused and in its original packaging.
Return procedure for BAS 70 B5003:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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