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Nexperia USA Inc. 1PS70SB44,115
- Part No.:
- 1PS70SB44,115
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Diode Arrays
- Package:
- SC-70, SOT-323
- Datasheet:
-
1PS70SB44,115.pdf
- Description:
- DIODE ARR SCHOT 40V 120MA SOT323
- Quantity:
- Payment:
- Shipping:
Inventory:2,741
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Product details
Overview
1PS70SB44 from Nexperia is a general-purpose dual Schottky diode in SOT323 (SC-70) package, configured as two independent diodes sharing a common terminal (A1–K1/K2–A2). It delivers 40 V reverse voltage rating, 120 mA forward current capability, 380 mV forward voltage at 1 mA, 5 pF capacitance at 0 V, and AEC-Q101 qualification for automotive signal clamping and high-speed switching.
For engineers reviewing the 1PS70SB44 datasheet, 1PS70SB44 pinout, 1PS70SB44 application, or 1PS70SB44 equivalent, key selection criteria include its dual-diode topology with shared cathode/anode node, low VF at low IF, sub-1 µA IR at 30 V, and thermal resistance of 625 K/W on FR4 - critical for space-constrained, thermally sensitive PCB layouts.
Technical Context
This dual Schottky diode integrates two discrete junctions in one SC-70 package with a shared terminal (Pin 3 = K1/A2), enabling compact bidirectional clamping or independent channel protection. Its 150 °C max junction temperature and AEC-Q101 qualification confirm suitability for under-hood automotive environments.
Electrical behavior is defined by low forward voltage (≤500 mV at 10 mA), minimal reverse leakage (≤10 µA at 40 V), and low junction capacitance (5 pF at 0 V, 1 MHz), supporting operation up to ultra-high frequencies without significant signal distortion or power loss.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reverse Voltage (VR) | 40 V - supports clamping transients in 24 V automotive systems without breakdown. |
| Forward Voltage (VF) | 380 mV at 1 mA - enables efficient low-current biasing and logic-level signal steering. |
| Reverse Current (IR) | 1 µA at 30 V - ensures minimal standby power loss in battery-backed circuits. |
| Capacitance (Cd) | 5 pF at 0 V, 1 MHz - preserves signal integrity in >100 MHz digital or RF interface lines. |
| Thermal Resistance (Rth(j-a)) | 625 K/W on FR4 - requires careful copper pour design for sustained 120 mA operation. |
| Junction Temperature (Tj) | 150 °C - allows deployment in engine control units and powertrain modules. |
| AEC-Q101 Qualified | Yes - validated for automotive-grade reliability per stress test requirements. |
Pinout & Package
Package: SOT323 (SC-70), 3-lead surface-mount plastic package, 2.0 mm × 1.25 mm × 0.95 mm body, 1.3 mm lead pitch.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Anode (Diode 1) | Input node for first Schottky path; connects to protected signal or supply rail. |
| 2 | Cathode (Diode 2) | Output node for second Schottky path; routes clamped current to ground or reference. |
| 3 | Cathode (Diode 1) / Anode (Diode 2) | Shared terminal enabling dual-directional clamp or series-connected configuration. |
Key Features
| Feature | Design Value |
|---|---|
| High switching speed | Enabled by Schottky barrier structure and <5 pF capacitance - supports >100 MHz signal routing. |
| Low leakage current | ≤1 µA at 30 V - minimizes quiescent drain in always-on vehicle networks (e.g., CAN standby). |
| High breakdown voltage | 40 V VR rating - withstands load-dump spikes and ISO 7637-2 Pulse 1/2a in 12 V/24 V systems. |
| Low forward voltage | 380 mV at 1 mA - reduces voltage drop in precision level-shifting and sensing front-ends. |
| AEC-Q101 qualification | Validated for automotive use - eliminates need for additional qualification testing in Tier-1 designs. |
Applications
| Automotive CAN Bus Protection | USB 2.0 ESD Clamp |
|---|---|
Use Scenario: Protecting CAN_H/CAN_L lines against ESD and inductive transients in body control modules. IC Role / Device Role / Timing Role: Dual-diode clamping device with shared terminal used in bidirectional TVS-like configuration. Use Value: 40 V VR and 5 pF capacitance prevent signal degradation while meeting ISO 10605 ESD immunity requirements. |
Use Scenario: Low-capacitance ESD protection on USB D+/D− data lines in infotainment head units. IC Role / Device Role / Timing Role: Discrete Schottky pair providing fast turn-on clamping without distorting 480 Mbps data eye. Use Value: 380 mV VF and 5 pF Cd ensure minimal insertion loss and jitter impact across full USB 2.0 bandwidth. |
| Low-Power Sensor Biasing | DC-DC Converter Snubber |
Use Scenario: Providing precision bias current to automotive pressure or temperature sensors with microamp-level accuracy. IC Role / Device Role / Timing Role: Low-leakage Schottky diode pair used in current-source mirror or reference divider networks. Use Value: ≤1 µA IR at 30 V avoids measurement offset errors in 16-bit ADC sensor interfaces. |
Use Scenario: Snubbing flyback voltage spikes across MOSFET switches in 5 V/3.3 V buck converters. IC Role / Device Role / Timing Role: Fast-recovery Schottky clamp absorbing energy during switch-off transitions. Use Value: 120 mA IF rating and 150 °C Tj support continuous operation in thermally dense power stages. |
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 NSR20F40NXT5G | 40 V VR, 200 mA IF, 450 mV VF at 1 mA, SOD-523 package (smaller, 2-pin) | Single-diode, no shared-terminal topology - unsuitable for bidirectional clamp configurations. | Select when board space is critical and only unidirectional clamping is required. |
| Vishay VS-2EDH04-M3/84A | 40 V VR, 200 mA IF, 490 mV VF at 1 mA, SOT-363 package (6-pin, dual isolated) | Fully isolated dual diodes - no shared pin; larger footprint but higher layout flexibility. | Select when independent anode/cathode routing is mandatory and SOT-363 is acceptable. |
Compared with NSR20F40NXT5G and VS-2EDH04-M3/84A, the 1PS70SB44 uniquely provides shared-terminal dual functionality in the smallest 3-pin SC-70 footprint, balancing integration density, automotive qualification, and bidirectional clamping capability.
Availability
1PS70SB44 is available at Aetrix Electronics and suitable for automotive CAN protection, USB 2.0 ESD clamping, and low-power sensor biasing requiring stable component supply across production lifecycles.
Supply support for 1PS70SB44 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 technologies, delivering high-performance, reliable discrete and logic devices for automotive, industrial, and consumer markets.
The 1PS70SB44 belongs to Nexperia's AEC-Q101-qualified Schottky diode portfolio, engineered specifically for space-constrained, high-reliability automotive signal conditioning and transient suppression.
FAQ
What is the maximum pulsed forward current rating for 1PS70SB44?
The non-repetitive peak forward current (IFSM) is 200 mA for pulse width ≤10 ms at initial junction temperature of 25 °C. This rating supports short-duration surge events such as ESD or inductive kickback, provided thermal dissipation limits are observed per Rth(j-a) = 625 K/W.
Can Pin 3 be used as both cathode and anode simultaneously in circuit operation?
Yes - Pin 3 functions as cathode for Diode 1 and anode for Diode 2, enabling bidirectional clamping when Pins 1 and 2 are connected to opposing signal rails. This shared-terminal architecture is verified in Nexperia's recommended application schematics for CAN bus protection.
Is 1PS70SB44 compatible with lead-free reflow soldering profiles?
Yes - the SOT323 package is qualified for standard lead-free reflow per JEDEC J-STD-020. Recommended peak temperature is 260 °C, with time above liquidus ≤60 seconds. Footprint dimensions and solder paste stencil data are provided in Figures 6 and 7 of the official datasheet.
How does the 5 pF capacitance affect high-speed signal integrity?
At 5 pF, the diode introduces negligible loading on signals up to 200 MHz (where capacitive reactance remains >150 Ω). Measured data in Figure 4 confirms Cd decreases with increasing VR, further reducing impact during active clamping - making it suitable for USB 2.0 and automotive LIN bus interfaces.
1PS70SB44,115 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- -
- Package/Case:
- SC-70, SOT-323
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- 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):
- -
- Current - Reverse Leakage @ Vr:
- 10 µA @ 40 V
- Operating Temperature - Junction:
- 150°C (Max)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-323
1PS70SB44,115 FAQ
1.How can I place an order for 1PS70SB44,115 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1PS70SB44,115 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 1PS70SB44,115 reliable?
The price and inventory of 1PS70SB44,115 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1PS70SB44,115 is usually 5 days.
3.What payment methods are accepted for 1PS70SB44,115?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1PS70SB44,115 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1PS70SB44,115?
1PS70SB44,115 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1PS70SB44,115 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 1PS70SB44,115?
For technical support, including 1PS70SB44,115 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1PS70SB44,115 requirements.
6.How does Aetrix verify that 1PS70SB44,115 is sourced from the original manufacturer or authorized distributors?
All 1PS70SB44,115 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 1PS70SB44,115 meets industry standards.
7.What is the process for return or replacement of 1PS70SB44,115?
All 1PS70SB44,115 units undergo pre-shipment inspection (PSI). If there is an issue with 1PS70SB44,115, 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 1PS70SB44,115 part is unused and in its original packaging.
Return procedure for 1PS70SB44,115:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1PS70SB44,115 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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