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Nexperia USA Inc. BAS70-04-QR
- Part No.:
- BAS70-04-QR
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Diode Arrays
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
BAS70-04-QR.pdf
- Description:
- DIODE ARR SCHOT 70V 70MA TO236AB
- Quantity:
- Payment:
- Shipping:
Inventory:1,340
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Product details
Overview
BAS70-04-QR from Nexperia is a general-purpose dual Schottky diode in SOT23 package, configured as two independent low-capacitance, high-speed switching diodes sharing a common cathode/anode terminal (Pin 3 = K1/A2). It delivers 70 V reverse voltage rating, 410 mV forward voltage at 1 mA, and 2 pF capacitance at 0 V - enabling ultra-high-speed clamping in automotive signal conditioning circuits.
For engineers reviewing the BAS70-04-QR datasheet, BAS70-04-QR pinout, BAS70-04-QR application, or BAS70-04-QR equivalent, key selection criteria include its AEC-Q101 qualification, dual-diode topology with shared terminal, pulsed forward current capability up to 70 mA, and thermal resistance of 500 K/W on FR4 PCB - all critical for space-constrained automotive ECU protection designs.
Technical Context
This dual Schottky diode integrates two discrete junctions in one SOT23 package with a shared-terminal configuration (Pin 3 serves as cathode for D1 and anode for D2), enabling compact bidirectional clamping or level-shifting without external interconnects. Its 2 pF capacitance and sub-1 V VF at 15 mA support >100 MHz signal integrity in CAN/LIN bus interface protection.
Qualified per AEC-Q101, it operates across −65 °C to +150 °C ambient, with 100 mA non-repetitive peak forward current and 10 µA max reverse leakage at 70 V - meeting automotive transient suppression requirements under ISO 7637-2 Pulse 5a conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reverse Voltage (VR) | 70 V - supports clamping of 12 V/24 V automotive supply transients without breakdown |
| Forward Voltage (VF) | 410 mV @ 1 mA - minimizes conduction loss in low-current bias networks and sensing paths |
| Diode Capacitance (Cd) | 2 pF @ 0 V, 1 MHz - preserves signal edge rate in high-speed data lines (e.g., LIN, SENT) |
| Reverse Leakage (IR) | 10 µA @ 70 V - ensures stable DC bias in voltage reference and feedback divider networks |
| Thermal Resistance (Rth(j-a)) | 500 K/W - defines power derating on standard FR4 PCB; limits continuous dissipation to ~250 mW at Tamb = 85 °C |
| Junction Temperature (Tj) | 150 °C - enables operation in engine bay and transmission control modules without active cooling |
Pinout & Package
Package: SOT23 (TO-236AB), 3-terminal surface-mount plastic package, 2.9 mm × 1.3 mm × 1.0 mm body, 1.9 mm lead pitch.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Anode of Diode 1 (A1) | Input node for first clamping path; connects to protected signal line |
| 2 | Cathode of Diode 2 (K2) | Return node for second clamping path; typically tied to ground or rail |
| 3 | Cathode of Diode 1 / Anode of Diode 2 (K1; A2) | Shared terminal enabling bidirectional clamp or series-connected dual-path configuration |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive use per stress test standard - eliminates need for additional qualification effort in Tier 1 BOMs |
| Low 2 pF capacitance | Enables <1 ns rise-time preservation in 10–100 MHz digital interfaces without signal distortion |
| 70 V reverse blocking | Withstands load-dump transients up to ISO 7637-2 Level IV (75 V) with margin |
| 410 mV VF at 1 mA | Reduces quiescent current error in precision voltage reference dividers by <0.5% |
| SOT23 footprint | Compatible with standard 0.65 mm pitch reflow soldering profiles and automated placement equipment |
Applications
| Automotive LIN Bus Protection | Engine Control Unit (ECU) Input Clamping |
|---|---|
Use Scenario: Protecting LIN transceiver inputs against ESD and battery transients in body control modules. IC Role / Device Role / Timing Role: Dual-diode clamp between LIN line and ground/VBAT, using shared terminal (Pin 3) for compact layout. Use Value: 2 pF capacitance prevents signal degradation at 19.2 kbaud; 70 V VR withstands ISO 10605 ±30 kV contact discharge. |
Use Scenario: Clamping analog sensor inputs (e.g., MAP, TPS) in engine management systems exposed to ignition noise. IC Role / Device Role / Timing Role: Low-leakage (10 µA @ 70 V) dual Schottky providing bidirectional overvoltage protection without loading sensor output. Use Value: 410 mV VF ensures minimal offset in 0–5 V ratiometric sensor scaling; AEC-Q101 ensures 15-year field reliability. |
| Infotainment System Level Shifting | ADAS Camera Power Rail Decoupling |
Use Scenario: Translating logic levels between 3.3 V microcontroller I/O and 5 V display interface ICs. IC Role / Device Role / Timing Role: Dual Schottky used in back-to-back configuration (Pins 1–3 and 2–3) to enable bidirectional voltage translation. Use Value: Sub-1 V VF enables clean 3.3 V ↔ 5 V translation with <10 ns propagation delay; SOT23 saves board area vs. discrete diodes. |
Use Scenario: Suppressing high-frequency ripple on 12 V camera module power rails near image sensor ICs. IC Role / Device Role / Timing Role: Fast-switching dual diode placed in parallel with bulk capacitor to shunt RF noise above 10 MHz. Use Value: 2 pF Cd provides effective high-Z shunt above 80 MHz; 100 mA IFSM handles burst-mode switching noise peaks. |
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 NSR20F70HT1G | Higher VF (520 mV @ 1 mA); same 70 V VR; SOD-323 package (smaller, 1.7 mm × 1.25 mm) | Lower board area but higher conduction loss; less thermal mass for transient handling | Select when PCB space is constrained and forward loss is secondary to size |
| Vishay SDUR7004 | Same SOT23 package; 70 V VR; but higher IR (20 µA @ 70 V); not AEC-Q101 qualified | Lacks automotive qualification; higher leakage may affect precision sensor bias networks | Select for industrial or consumer applications where AEC-Q101 is not required |
Compared with NSR20F70HT1G and SDUR7004, BAS70-04-QR uniquely balances AEC-Q101 compliance, 410 mV low VF, and 2 pF capacitance in SOT23 - making it optimal for automotive signal integrity-critical clamping where both leakage and speed matter.
Availability
BAS70-04-QR is available at Aetrix Electronics and suitable for automotive LIN bus protection, ECU input clamping, and infotainment level shifting requiring stable component supply and long-term lifecycle assurance.
Supply support for BAS70-04-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 essential efficiency-enhancing components - including logic, discretes, MOSFETs, and analog devices - with manufacturing rooted in process technology leadership and automotive-grade quality systems.
BAS70-04-QR belongs to Nexperia's AEC-Q101-qualified Schottky diode portfolio, engineered specifically for robust, high-speed signal protection in automotive electronics where reliability, low capacitance, and thermal resilience are mandatory.
FAQ
What is the maximum continuous forward current for BAS70-04-QR?
The maximum continuous forward current is 70 mA per diode, as specified in the Absolute Maximum Ratings table. This limit applies at Tamb = 25 °C with derating above 25 °C based on Rth(j-a) = 500 K/W. At 85 °C ambient, usable continuous current drops to approximately 35 mA to maintain Tj ≤ 150 °C.
Is BAS70-04-QR suitable for bidirectional ESD protection?
Yes - its dual-diode configuration with shared terminal (Pin 3) allows direct implementation of a bidirectional TVS-like clamp between signal and ground or signal and VCC. With 70 V VR and 10 µA IR at 70 V, it meets IEC 61000-4-2 Level 4 (±15 kV air) when combined with series impedance, though dedicated TVS devices offer lower clamping voltage.
How does the shared-pin (Pin 3) configuration affect circuit layout?
Pin 3 functions as both cathode of Diode 1 and anode of Diode 2, enabling compact implementations of voltage clamps, level shifters, or OR-ing circuits without external wiring. Layout must avoid routing high-current return paths through Pin 3 that could induce cross-talk between the two diode paths, especially in mixed-signal domains.
Does BAS70-04-QR require special PCB layout considerations for thermal performance?
Yes - due to its 500 K/W Rth(j-a) on standard FR4, thermal relief should be minimized on Pins 1 and 2, and copper pour connected to Pin 3 (shared terminal) should be generous to improve heat spreading. Avoid placing temperature-sensitive components within 2 mm of the SOT23 body when operating near 70 mA continuous current.
BAS70-04-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 Series Connection
- Technology:
- Schottky
- Voltage - DC Reverse (Vr) (Max):
- 70 V
- Current - Average Rectified (Io) (per Diode):
- 70mA
- Voltage - Forward (Vf) (Max) @ If:
- 1 V @ 15 mA
- Speed:
- Small Signal =< 200mA (Io), Any Speed
- Reverse Recovery Time (trr):
- -
- Current - Reverse Leakage @ Vr:
- 100 nA @ 50 V
- Operating Temperature - Junction:
- 150°C
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- TO-236AB
BAS70-04-QR FAQ
1.How can I place an order for BAS70-04-QR through Aetrix?
Please submit a Request for Quotation (RFQ) for BAS70-04-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 BAS70-04-QR reliable?
The price and inventory of BAS70-04-QR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BAS70-04-QR is usually 5 days.
3.What payment methods are accepted for BAS70-04-QR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BAS70-04-QR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BAS70-04-QR?
BAS70-04-QR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BAS70-04-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 BAS70-04-QR?
For technical support, including BAS70-04-QR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BAS70-04-QR requirements.
6.How does Aetrix verify that BAS70-04-QR is sourced from the original manufacturer or authorized distributors?
All BAS70-04-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 BAS70-04-QR meets industry standards.
7.What is the process for return or replacement of BAS70-04-QR?
All BAS70-04-QR units undergo pre-shipment inspection (PSI). If there is an issue with BAS70-04-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 BAS70-04-QR part is unused and in its original packaging.
Return procedure for BAS70-04-QR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BAS70-04-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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