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Nexperia USA Inc. BAS16,235
- Part No.:
- BAS16,235
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Diodes
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
BAS16,235.pdf
- Description:
- DIODE GP 100V 215MA TO236AB
- Quantity:
- Payment:
- Shipping:
Inventory:3,751
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Product details
Overview
BAS16,235 from Nexperia is a high-speed switching diode in SOT23 package, designed for fast signal routing and transient suppression in digital logic interfaces. It delivers trr ≤ 4 ns reverse recovery time, VR = 100 V maximum reverse voltage, IF = 215 mA continuous forward current, and Cd = 1.5 pF capacitance at 0 V - enabling use in 50 MHz+ clock line clamping and data-line protection circuits.
For engineers reviewing the BAS16,235 datasheet, BAS16,235 pinout, BAS16,235 application, or BAS16,235 equivalent, key selection criteria include verified trr performance under IF = 10 mA/IR = 10 mA test conditions, n.c. terminal confirmation in SOT23 layout, thermal resistance Rth(j-a) = 500 K/W on FR4 PCB, and compatibility with reflow soldering per IPC-J-STD-020.
Technical Context
The BAS16,235 operates as a single silicon planar epitaxial switching diode with anode (Pin 1), not-connected (Pin 2), and cathode (Pin 3) terminals. Its low trr and sub-1.5 pF capacitance stem from optimized doping profiles and minimal junction area - critical for minimizing propagation delay in TTL/CMOS interface protection.
It is rated for repetitive peak reverse voltage VRRM = 100 V and non-repetitive peak forward current IFSM = 4 A (tp = 1 µs), with thermal design constrained by Rth(j-sp) = 330 K/W to solder point - requiring attention to PCB copper area and trace width in high-duty-cycle pulse applications.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| trr | 4 ns max - enables reliable operation in >100 Mbps digital signal paths without timing skew |
| VRRM | 100 V - supports 24 V industrial bus lines and 48 V telecom power rail monitoring |
| IF (continuous) | 215 mA - sufficient for driving LED indicators or small-signal relay coils |
| Cd | 1.5 pF at 0 V - minimizes capacitive loading on high-impedance analog sensor outputs |
| VF | 855 mV typ at 10 mA - ensures low forward drop in battery-powered logic-level translation |
| IR | 0.5 µA max at VR = 80 V - maintains signal integrity in high-impedance sample-and-hold circuits |
Pinout & Package
Package: SOT23 plastic surface-mount package (2.9 mm × 1.3 mm × 1.0 mm body, 1.9 mm lead pitch), optimized for automated placement and IPC-compliant reflow.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Anode (A1) | Forward current entry point; must connect to higher-potential node in clamping or steering configuration |
| 2 | Not Connected (n.c.) | No internal connection; PCB pad may be left unconnected or used for mechanical anchoring only |
| 3 | Cathode (K) | Forward current exit and reverse voltage reference; ties to ground or low-side return path |
Key Features
| Feature | Design Value |
|---|---|
| High-speed switching | trr ≤ 4 ns measured under standardized IF = 10 mA / IR = 10 mA / RL = 100 Ω conditions |
| Low leakage | IR ≤ 0.5 µA at VR = 80 V and Tamb = 25 °C - preserves bias stability in precision op-amp input networks |
| Small-footprint packaging | SOT23 footprint compatible with 0.5 mm solder paste stencil apertures and standard pick-and-place nozzles |
| Thermal robustness | Rth(j-a) = 500 K/W on FR4 PCB - allows 250 mW total dissipation with ≤ 75 °C junction rise above ambient |
Applications
| USB 2.0 Data Line Protection | Microcontroller GPIO Clamp |
|---|---|
Use Scenario: Bidirectional ESD protection on D+ and D− lines of USB 2.0 peripherals. IC Role / Device Role / Timing Role: Transient voltage suppressor placed between data line and ground, leveraging fast trr to avoid signal distortion during hot-plug events. Use Value: 1.5 pF capacitance prevents >1% signal rise-time degradation at 480 Mbps; 100 V VRRM withstands ±15 kV contact discharge per IEC 61000-4-2. |
Use Scenario: Input protection for 3.3 V microcontroller GPIO pins exposed to external sensors or switches. IC Role / Device Role / Timing Role: Clamping diode limiting voltage excursions beyond VDD + 0.3 V or VSS − 0.3 V during overvoltage transients. Use Value: 0.5 µA IR ensures <100 nA leakage into MCU input leakage budget; SOT23 size fits dense QFN MCU layouts. |
| RS-485 Receiver Input Protection | Level-Shifting Signal Steering |
Use Scenario: Front-end protection for RS-485 receiver inputs operating across −7 V to +12 V common-mode range. IC Role / Device Role / Timing Role: Reverse-biased clamp limiting differential input swing to prevent receiver latch-up during cable surge events. Use Value: 100 V VRRM exceeds RS-485 fault tolerance requirements; 4 ns trr avoids false triggering during fast edge transitions. |
Use Scenario: Directional signal routing in bidirectional I²C or SPI level-shifters using discrete diode steering. IC Role / Device Role / Timing Role: Anode-to-higher-voltage-rail, cathode-to-lower-rail configuration enabling passive voltage translation without active circuitry. Use Value: 855 mV VF at 10 mA ensures <100 mV offset error in 3.3 V ↔ 1.8 V translation; SOT23 allows dual-diode placement per signal pair. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-speed switching diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N4148W | trr = 4 ns (same), but VF = 1.25 V at 150 mA vs. BAS16's 1.25 V at same condition; Cd = 4 pF vs. 1.5 pF | Higher capacitance limits use above 25 MHz; preferred where higher IF capability (300 mA) outweighs speed | Select when board space permits larger SOD-123 and higher forward current is required |
| MMBD4148 | Identical SOT23-3 pinout and trr ≤ 4 ns, but IR = 5 nA at VR = 20 V (lower leakage), VF = 1.0 V at 10 mA | Lower leakage suits ultra-low-power sensor nodes; slightly higher VF increases power loss in high-duty-cycle switching | Prefer for battery-operated IoT endpoints where standby current dominates system budget |
Compared with 1N4148W and MMBD4148, the BAS16,235 offers the lowest capacitance (1.5 pF) among SOT23 high-speed diodes - making it optimal for RF-adjacent digital routing and high-frequency sampling circuits where parasitic loading must be minimized.
Availability
BAS16,235 is available at Aetrix Electronics and suitable for USB 2.0 interface protection, microcontroller I/O clamping, and RS-485 receiver front-end circuits requiring stable component supply and full traceability.
Supply support for BAS16,235 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 leading semiconductor manufacturer headquartered in Nijmegen, Netherlands, specializing in high-performance, high-reliability discrete and logic devices for automotive, industrial, and consumer markets.
The BAS16 belongs to Nexperia's high-speed switching diode product line, engineered specifically for signal integrity preservation in high-frequency digital interfaces and transient suppression in compact, thermally constrained PCB layouts.
FAQ
Is BAS16,235 suitable for automotive applications?
No. The BAS16,235 is explicitly marked as non-automotive qualified in Nexperia's revision history. It lacks AEC-Q101 qualification, temperature cycling validation beyond 150 °C junction, and automotive-grade traceability. For automotive use, Nexperia recommends the BAS16-Q series variants with full AEC-Q101 certification and extended temperature screening.
What is the function of Pin 2 (n.c.) in BAS16,235?
Pin 2 is internally not connected - it has no electrical bond or silicon link. It serves only as a mechanical anchor for the SOT23 package during assembly and may be left floating on the PCB. Routing traces or vias to this pad is unnecessary and may risk solder bridging; Nexperia's recommended footprint excludes metal under Pin 2.
Can BAS16,235 replace BAT54 in low-voltage Schottky applications?
No. The BAS16,235 is a silicon PN junction diode, not a Schottky device. Its VF starts at 715 mV (vs. BAT54's ~300 mV), and it lacks the zero-threshold conduction behavior needed for low-loss 1.8 V or 3.3 V rail steering. Substituting it for BAT54 would increase forward loss and reduce efficiency in power-path applications.
How does thermal resistance change if BAS16,235 is mounted on 2-layer versus 4-layer PCB?
Rth(j-a) drops from 500 K/W (FR4, single-sided copper) to ~350 K/W on a 4-layer board with internal ground/power planes and thermal vias under the SOT23 pad. This improves power handling margin: at 250 mW dissipation, junction temperature rise decreases from 125 °C to ~88 °C - extending reliability in sustained pulse applications.
BAS16,235 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- BAS16
- Package/Case:
- TO-236-3, SC-59, SOT-23-3
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Technology:
- Standard
- Voltage - DC Reverse (Vr) (Max):
- 100 V
- Current - Average Rectified (Io):
- 215mA
- Voltage - Forward (Vf) (Max) @ If:
- 1.25 V @ 150 mA
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- 4 ns
- Current - Reverse Leakage @ Vr:
- 500 nA @ 80 V
- Capacitance @ Vr, F:
- 1.5pF @ 0V, 1MHz
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- TO-236AB
- Operating Temperature - Junction:
- 150°C (Max)
BAS16,235 FAQ
1.How can I place an order for BAS16,235 through Aetrix?
Please submit a Request for Quotation (RFQ) for BAS16,235 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 BAS16,235 reliable?
The price and inventory of BAS16,235 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BAS16,235 is usually 5 days.
3.What payment methods are accepted for BAS16,235?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BAS16,235 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BAS16,235?
BAS16,235 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BAS16,235 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 BAS16,235?
For technical support, including BAS16,235 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BAS16,235 requirements.
6.How does Aetrix verify that BAS16,235 is sourced from the original manufacturer or authorized distributors?
All BAS16,235 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 BAS16,235 meets industry standards.
7.What is the process for return or replacement of BAS16,235?
All BAS16,235 units undergo pre-shipment inspection (PSI). If there is an issue with BAS16,235, 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 BAS16,235 part is unused and in its original packaging.
Return procedure for BAS16,235:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BAS16,235 Tags
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