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Nexperia USA Inc. BAS70H-QX
- Part No.:
- BAS70H-QX
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Diodes
- Package:
- SOD-123F
- Datasheet:
-
BAS70H-QX.pdf
- Description:
- BAS70H-Q/SOD123F/SOD2
- Quantity:
- Payment:
- Shipping:
Inventory:8,169
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Product details
Overview
BAS70H-Q from Nexperia is a general-purpose Schottky diode in SOD123F package, rated for 70 V reverse voltage, 70 mA forward current, and 410 mV forward voltage at 1 mA (pulsed), with 2 pF capacitance and AEC-Q101 qualification for automotive use.
For engineers reviewing the BAS70H-Q datasheet, BAS70H-Q pinout, BAS70H-Q application, or BAS70H-Q equivalent, key selection criteria include low VF for power-sensitive clamping, ultra-low Cd for high-speed switching, AEC-Q101 compliance for under-hood electronics, and SOD123F footprint compatibility with space-constrained PCB layouts.
Technical Context
This Schottky diode leverages a metal–semiconductor junction to achieve fast switching (no minority-carrier storage) and low forward voltage drop. Its 70 V VR rating supports 24 V automotive supply rail protection, while 2 pF capacitance enables operation beyond 500 MHz in RF detector or sampling circuits.
Thermal resistance of 330 K/W (junction-to-ambient, FR4, single-sided copper) and 150 °C max junction temperature allow reliable operation in engine control units and ADAS sensor interfaces without forced cooling.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VR (Reverse Voltage) | 70 V - Supports transient suppression in 24 V automotive systems up to ISO 7637-2 Pulse 1/2a levels. |
| VF (Forward Voltage) | 410 mV @ 1 mA pulsed - Minimizes conduction loss in low-current bias and signal-level clamping paths. |
| IR (Reverse Current) | 10 µA @ 70 V - Ensures low leakage in high-impedance voltage reference or sensing nodes. |
| Cd (Capacitance) | 2 pF @ 0 V, 1 MHz - Enables use in >500 MHz RF envelope detection and high-speed logic clamping. |
| IF (Forward Current) | 70 mA continuous - Sufficient for LED biasing, small-signal rectification, and logic-level translation. |
| Tj (Junction Temp) | 150 °C - Rated for under-hood environments including transmission control modules and body ECUs. |
Pinout & Package
SOD123F surface-mount plastic package: 2.6 mm × 1.6 mm × 1.1 mm body, flat lead profile optimized for reflow soldering on FR4 PCBs with standard footprint per Figure 6.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Marked side) | Cathode (K) | Connected to lower-potential node; marking bar identifies polarity for automated optical inspection and manual assembly. |
| 2 | Anode (A) | Connected to higher-potential source; accepts forward current flow toward cathode during conduction. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability across −40 °C to +125 °C ambient, including temperature cycling and HTRB. |
| Low VF / Low Cd trade-off | 410 mV @ 1 mA and 2 pF simultaneously enable efficient clamping without bandwidth degradation in high-frequency circuits. |
| High-speed switching | No minority-carrier storage delay - supports sub-nanosecond turn-off in pulse shaping and ESD protection feedback paths. |
| Reflow-compatible footprint | Standardized SOD123F land pattern (2.9 mm × 1.6 mm occupied area) ensures manufacturability on high-volume SMT lines. |
Applications
| Automotive Engine Control Unit (ECU) | USB Port ESD Protection |
|---|---|
Use Scenario: Clamping induced transients on 5 V sensor supply rails during load dump events. IC Role / Device Role / Timing Role: Fast-acting voltage clamp placed between rail and ground to limit overshoot below IC absolute maximum ratings. Use Value: 70 V VR withstands ISO 7637-2 Pulse 5a (110 V peak); 410 mV VF avoids false triggering during normal operation. |
Use Scenario: Protecting USB 2.0 D+/D− data lines from IEC 61000-4-2 ±8 kV contact discharge. IC Role / Device Role / Timing Role: Low-capacitance steering diode shunting ESD current to VBUS or GND before it reaches PHY transceiver. Use Value: 2 pF Cd preserves signal integrity up to 480 Mbps; AEC-Q101 qualification ensures robustness in vehicle infotainment USB ports. |
| Industrial PLC Input Conditioning | RF Signal Detector Circuit |
Use Scenario: Level-shifting and overvoltage protection for 24 V digital inputs interfacing with 3.3 V microcontrollers. IC Role / Device Role / Timing Role: Series Schottky barrier preventing backfeed while clamping negative excursions below GND. Use Value: 70 mA IF handles typical PLC input sink currents; 10 µA IR prevents loading of high-impedance optocoupler bias networks. |
Use Scenario: Demodulating AM signals in 868 MHz ISM-band wireless sensor nodes. IC Role / Device Role / Timing Role: Zero-bias envelope detector leveraging low junction capacitance and minimal series resistance. Use Value: 2 pF Cd and <1 Ω rdiff at 10 mA enable efficient RF-to-DC conversion with minimal harmonic distortion. |
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, 0.45 V VF @ 10 mA, SOD-123 package | Lower voltage rating limits use to 5 V/12 V systems; higher IF supports higher-power biasing. | Select when higher forward current capability is required and 70 V rating is unnecessary. |
| Vishay SD103AW-G | 40 V VR, 200 mA IF, 0.45 V VF @ 10 mA, SOD-123 package | Not AEC-Q101 qualified; 40 V VR insufficient for 24 V automotive transients. | Acceptable for industrial/commercial consumer designs where automotive qualification is not mandated. |
Compared with NSR0230HT1G and SD103AW-G, BAS70H-Q uniquely balances 70 V transient tolerance, AEC-Q101 compliance, and 2 pF capacitance-making it the only option among the three suitable for automotive signal-line clamping where both voltage margin and RF performance are critical.
Availability
BAS70H-Q is available at Aetrix Electronics and suitable for automotive engine control units, USB interface protection, industrial PLC input conditioning, and RF envelope detection requiring stable component supply and long-term lifecycle support.
Supply support for BAS70H-Q 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-qualified components and advanced packaging.
BAS70H-Q belongs to Nexperia's AEC-Q101-qualified Schottky diode family, engineered specifically for automotive signal integrity and transient protection in harsh-environment electronic control modules.
FAQ
Is BAS70H-Q suitable for continuous DC blocking in a 24 V power rail?
No. While its 70 V VR rating exceeds 24 V, the 70 mA continuous forward current rating and 330 K/W thermal resistance limit sustained power dissipation. It is designed for pulsed clamping and signal-level applications-not primary power rail blocking. For DC blocking, consider higher-current Schottky diodes like PMEG3010CPX.
What is the significance of the 'H' in BAS70H-Q?
The 'H' denotes a specific process and test variant within Nexperia's BAS70 series, indicating tighter control on forward voltage distribution and enhanced screening for automotive applications. It corresponds to the AEC-Q101-qualified version with guaranteed 410 mV VF upper limit at 1 mA pulsed conditions.
Can BAS70H-Q replace BAS70-04 in an existing design?
Yes, with caveats: both share SOD123F package and pinout, but BAS70H-Q has higher VR (70 V vs. 40 V) and AEC-Q101 qualification. If the original design relies on 40 V rating or lacks automotive qualification requirements, no redesign is needed; however, layout and thermal validation should confirm compatibility with the higher VR's slightly different leakage behavior at elevated temperatures.
Does the SOD123F package support automated optical inspection (AOI)?
Yes. The SOD123F package features a clearly defined cathode marking bar and consistent lead geometry, enabling reliable AOI detection per IPC-A-610 Class 2/3 standards. The flat lead profile and standardized footprint also support high-yield SPI and reflow processes in J-STD-020-compliant manufacturing lines.
BAS70H-QX Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- -
- Package/Case:
- SOD-123F
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- 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):
- -
- Current - Reverse Leakage @ Vr:
- 10 µA @ 70 V
- Capacitance @ Vr, F:
- 2pF @ 0V, 1MHz
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOD-123F
- Operating Temperature - Junction:
- 150°C
BAS70H-QX FAQ
1.How can I place an order for BAS70H-QX through Aetrix?
Please submit a Request for Quotation (RFQ) for BAS70H-QX 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 BAS70H-QX reliable?
The price and inventory of BAS70H-QX are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BAS70H-QX is usually 5 days.
3.What payment methods are accepted for BAS70H-QX?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BAS70H-QX transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BAS70H-QX?
BAS70H-QX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BAS70H-QX 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 BAS70H-QX?
For technical support, including BAS70H-QX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BAS70H-QX requirements.
6.How does Aetrix verify that BAS70H-QX is sourced from the original manufacturer or authorized distributors?
All BAS70H-QX 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 BAS70H-QX meets industry standards.
7.What is the process for return or replacement of BAS70H-QX?
All BAS70H-QX units undergo pre-shipment inspection (PSI). If there is an issue with BAS70H-QX, 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 BAS70H-QX part is unused and in its original packaging.
Return procedure for BAS70H-QX:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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