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Nexperia USA Inc. BAS70-05,235
- Part No.:
- BAS70-05,235
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Diode Arrays
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
BAS70-05,235.pdf
- Description:
- DIODE ARR SCHOT 70V 70MA TO236AB
- Quantity:
- Payment:
- Shipping:
Inventory:119
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Product details
Overview
BAS70-05 from Nexperia is a dual-channel Schottky diode in SOT23 package, configured with two anodes (A1, A2) and a shared cathode (K1/K2), rated for 70 V reverse voltage, 70 mA forward current, and 410 mV forward voltage at 1 mA - used for ultra-high-speed switching and voltage clamping in signal path protection circuits.
For engineers reviewing the BAS70-05 datasheet, BAS70-05 pinout, BAS70-05 application, or BAS70-05 equivalent, key selection criteria include common-cathode dual-diode topology, low 2 pF capacitance at 0 V, sub-1 µs switching speed, thermal resistance of 500 K/W, and compatibility with reflow/wave soldering footprints per JEDEC MO-203.
Technical Context
The BAS70-05 integrates two independent Schottky junctions sharing a single cathode terminal, enabling compact dual-clamp or dual-steering functionality without inter-die coupling. Its low 410 mV VF at 1 mA and 100 nA IR at 50 V support low-loss signal routing in high-frequency analog and digital I/O protection.
Thermal design relies on its 500 K/W junction-to-ambient resistance under standard FR4 mounting, and its 150 °C maximum junction temperature allows operation in industrial ambient environments up to 125 °C with derating. The device is non-automotive qualified per revision history v.11 (Jan 2023).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reverse Voltage (VR) | 70 V - supports clamping of transient spikes up to ±70 V without breakdown. |
| Forward Voltage (VF) | 410 mV @ 1 mA - enables low-voltage-drop steering in 3.3 V/5 V logic interfaces. |
| Reverse Current (IR) | 100 nA @ 50 V - ensures minimal leakage in high-impedance bias networks. |
| Diode Capacitance (Cd) | 2 pF @ 0 V, 1 MHz - preserves signal integrity in >100 MHz RF and data-line applications. |
| Thermal Resistance (Rth(j-a)) | 500 K/W - defines power dissipation limit of ~150 mW in free-air FR4 layout. |
| Peak Forward Current (IFSM) | 100 mA @ 10 ms - withstands short-duration ESD or surge events per IEC 61000-4-2. |
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, standardized footprint per Fig. 6 (reflow) and Fig. 7 (wave) in datasheet.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Anode of Diode 1 (A1) | Input node for first Schottky path; connects to protected signal line or supply rail. |
| 2 | Anode of Diode 2 (A2) | Independent input node for second Schottky path; enables dual-rail clamping. |
| 3 | Common Cathode (K1/K2) | Shared output node tied to reference (e.g., VCC or GND); defines clamp threshold direction. |
Key Features
| Feature | Design Value |
|---|---|
| High switching speed | Sub-microsecond recovery enables use in >100 MHz clock/data line protection. |
| Low leakage current | 100 nA max at 50 V ensures minimal loading on high-Z sensor or reference nodes. |
| Low forward voltage | 410 mV typ at 1 mA reduces conduction loss in low-voltage I/O clamping. |
| Low capacitance | 2 pF typ at 0 V preserves bandwidth in RF front-end and high-speed serial links. |
Applications
| USB 2.0 Data Line Protection | LVDS Receiver Clamp |
|---|---|
Use Scenario: Protecting D+ and D− lines against ESD and overvoltage transients in USB 2.0 host/device ports. IC Role / Device Role / Timing Role: Dual Schottky clamp referenced to VBUS or GND, leveraging shared cathode for symmetrical bidirectional clamping. Use Value: 2 pF capacitance avoids signal integrity degradation at 480 Mbps; 70 V VR withstands IEC 61000-4-2 ±15 kV contact discharge. |
Use Scenario: Preventing receiver input damage from overshoot/undershoot during LVDS differential switching. IC Role / Device Role / Timing Role: Dual-anode clamp to common cathode tied to termination voltage (e.g., 1.2 V), limiting swing beyond valid common-mode range. Use Value: 410 mV VF enables precise clamping near rail without forward conduction in normal operation; low IR avoids DC offset error. |
| Microcontroller GPIO Protection | RF Signal Path Isolation |
Use Scenario: Safeguarding 3.3 V microcontroller pins exposed to external connectors or sensors. IC Role / Device Role / Timing Role: Dual-diode clamp from each GPIO to VDD and GND using shared-cathode configuration for compact board layout. Use Value: SOT23 footprint saves space vs. discrete diodes; 100 mA IFSM handles typical connector hot-plug surges. |
Use Scenario: DC blocking and transient suppression in 2.4 GHz ISM band antenna switch paths. IC Role / Device Role / Timing Role: Low-capacitance Schottky pair used as RF limiter between PA and antenna switch, with cathode grounded. Use Value: 2 pF Cd minimizes insertion loss at 2.4 GHz; 70 V VR accommodates PA output transients without breakdown. |
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 IF = 200 mA, VF = 450 mV @ 1 mA, same SOT23-3 package, but separate cathodes (not common-cathode). | Requires two separate cathode traces; unsuitable for shared-reference clamping topologies. | Select only when independent cathode routing is acceptable and higher surge rating is required. |
| Diodes Inc. BAV99,215 | Same common-cathode SOT23-3 pinout, but higher VF = 1.25 V @ 10 mA and higher Cd = 2.5 pF @ 0 V. | Less suitable for low-voltage or high-frequency applications due to higher conduction loss and capacitance. | Acceptable for cost-sensitive 5 V systems where 1.25 V VF and 2.5 pF Cd are tolerable. |
Compared with NSR20F70HT1G and BAV99,215, the BAS70-05 uniquely balances ultra-low capacitance (2 pF), low VF (410 mV), and true common-cathode topology - making it optimal for compact, high-speed dual-rail clamping where layout area and signal fidelity are critical.
Availability
BAS70-05 is available at Aetrix Electronics and suitable for USB interface protection, LVDS receiver safeguarding, and microcontroller GPIO hardening requiring stable component supply across industrial, computing, and consumer electronics programs.
Supply support for BAS70-05 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 essential semiconductors - delivering discrete, logic, and MOSFET solutions optimized for efficiency, size, and performance.
The BAS70-05 belongs to Nexperia's general-purpose Schottky diode family, engineered specifically for space-constrained, high-speed signal integrity applications including interface protection and voltage clamping in portable and industrial electronics.
FAQ
Is the BAS70-05 automotive-qualified?
No. Per revision history v.11 (January 2023), the BAS70-05 is explicitly designated as non-automotive qualified. It has not undergone AEC-Q101 stress testing or automotive-grade qualification. For automotive use, Nexperia offers the -Q qualified variants such as BAS70-05-Q, which must be specified separately.
What is the correct PCB footprint for BAS70-05?
The official reflow soldering footprint is defined in Figure 6 of the datasheet: three 0.6 mm × 0.5 mm solder lands spaced 1.9 mm apart, with 0.7 mm solder paste stencil openings. Wave soldering uses the footprint in Figure 7, with 1.4 mm × 2.2 mm pads and specific transport-direction orientation.
Can BAS70-05 be used for bidirectional ESD protection?
Yes - when the common cathode (Pin 3) is tied to VCC, the dual anodes (Pins 1 and 2) clamp negative transients to VCC and positive transients to GND via external series resistors and pull-downs. This configuration enables effective bidirectional I/O protection in 3.3 V systems with proper external biasing.
How does thermal performance change with PCB copper area?
Rth(j-a) is specified as 500 K/W on a single-sided FR4 board with standard footprint. Adding internal or external copper planes - especially a 10 mm² thermal pad connected to Pin 3 - can reduce Rth(j-a) by 30–50%, enabling sustained 70 mA operation at ambient temperatures up to 85 °C without exceeding 150 °C Tj.
BAS70-05,235 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):
- 70 V
- Current - Average Rectified (Io) (per Diode):
- 70mA (DC)
- Voltage - Forward (Vf) (Max) @ If:
- 1 V @ 15 mA
- Speed:
- Small Signal =< 200mA (Io), Any Speed
- Reverse Recovery Time (trr):
- -
- Current - Reverse Leakage @ Vr:
- 10 µA @ 70 V
- Operating Temperature - Junction:
- 150°C (Max)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- TO-236AB
BAS70-05,235 FAQ
1.How can I place an order for BAS70-05,235 through Aetrix?
Please submit a Request for Quotation (RFQ) for BAS70-05,235 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 BAS70-05,235 reliable?
The price and inventory of BAS70-05,235 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BAS70-05,235 is usually 5 days.
3.What payment methods are accepted for BAS70-05,235?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BAS70-05,235 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BAS70-05,235?
BAS70-05,235 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BAS70-05,235 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 BAS70-05,235?
For technical support, including BAS70-05,235 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BAS70-05,235 requirements.
6.How does Aetrix verify that BAS70-05,235 is sourced from the original manufacturer or authorized distributors?
All BAS70-05,235 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 BAS70-05,235 meets industry standards.
7.What is the process for return or replacement of BAS70-05,235?
All BAS70-05,235 units undergo pre-shipment inspection (PSI). If there is an issue with BAS70-05,235, 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 BAS70-05,235 part is unused and in its original packaging.
Return procedure for BAS70-05,235:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BAS70-05,235 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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