My Inquiry
My Account
Nexperia USA Inc. BAS28,235
- Part No.:
- BAS28,235
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Diode Arrays
- Package:
- TO-253-4, TO-253AA
- Datasheet:
-
BAS28,235.pdf
- Description:
- DIODE ARRAY GP 75V 215MA SOT143B
- Quantity:
- Payment:
- Shipping:
Inventory:13,051
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
BAS28,235 from Nexperia is a high-speed double diode in SOT143B package, comprising two isolated silicon planar switching diodes. It delivers trr ≤ 4 ns reverse recovery time, VRRM = 85 V, and IFRM = 500 mA, with AEC-Q101 qualification for automotive-grade reliability in compact surface-mounted power management and signal routing circuits.
For engineers reviewing the BAS28,235 datasheet, BAS28,235 pinout, BAS28,235 application, or BAS28,235 equivalent, this dual diode supports high-frequency switching in space-constrained designs where low capacitance (Cd = 1.5 pF), fast transient response, and thermal robustness (Tj = 150 °C) are critical selection criteria.
Technical Context
The BAS28,235 integrates two electrically independent high-speed switching diodes on a single die using planar epitaxial technology. Each diode exhibits low forward voltage (VF = 855 mV at IF = 10 mA) and minimal reverse leakage (IR = 1 µA at VR = 75 V, Tamb = 25 °C), enabling efficient signal clamping and polarity protection.
Its SOT143B package features 4 leads with 1.9 mm pitch and FR4-optimized thermal resistance (Rth(j-a) = 500 K/W), supporting stable operation under pulsed loads up to IFSM = 4 A (tp = 1 µs) while maintaining junction temperature within 150 °C limits.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| trr | 4 ns - Enables >100 MHz switching in RF detector and sample-and-hold circuits without tail current distortion. |
| VRRM | 85 V - Supports 24 V and 48 V industrial bus systems with 20 % safety margin against transients. |
| IFRM | 500 mA - Sustains continuous forward current in dual-path ESD protection or level-shifting networks. |
| Cd | 1.5 pF at VR = 0 V - Minimizes capacitive loading in high-impedance analog signal paths and clock distribution. |
| Rth(j-a) | 500 K/W - Requires minimal PCB copper area for thermal management in unforced-air environments. |
| Tj max | 150 °C - Meets AEC-Q101 requirements for under-hood automotive modules operating at ambient up to 125 °C. |
Pinout & Package
SOT143B is a 4-lead surface-mount plastic package measuring 2.9 mm × 1.3 mm × 1.0 mm with 1.9 mm lead pitch and optimized reflow footprint per Figure 9 of the datasheet.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | K1 | Cathode of Diode 1 - Connects to reference node or ground side in dual-clamp configurations. |
| 2 | K2 | Cathode of Diode 2 - Independent cathode terminal enables separate biasing or isolation in differential signal paths. |
| 3 | A2 | Anode of Diode 2 - Used for reverse-polarity protection on secondary supply rail or auxiliary channel. |
| 4 | A1 | Anode of Diode 1 - Primary anode input for main signal path or power rail conditioning. |
Key Features
| Feature | Design Value |
|---|---|
| High-speed switching | trr ≤ 4 ns ensures clean edge transitions in 50–100 MHz digital signal routing and pulse shaping. |
| AEC-Q101 qualification | Validated for automotive applications including body control modules and infotainment power supplies. |
| Low diode capacitance | 1.5 pF at 0 V reverse bias preserves signal integrity in high-frequency analog front-ends and RF detectors. |
| Isolated dual-diode structure | Independent anode/cathode pairs allow flexible implementation in bidirectional clamping or dual-rail protection. |
Applications
| Automotive Body Control Module | Industrial PLC Input Protection |
|---|---|
Use Scenario: Protecting microcontroller GPIOs and CAN transceiver lines from load-dump transients and ESD events in vehicle door modules. IC Role / Device Role / Timing Role: Dual-diode clamp providing bidirectional overvoltage suppression on two independent signal lines. Use Value: AEC-Q101 rating and 85 V VRRM ensure compliance with ISO 7637-2 Pulse 5a requirements without external TVS stacking. |
Use Scenario: Isolating 24 V DC sensor inputs from field wiring surges in programmable logic controller backplanes. IC Role / Device Role / Timing Role: Independent diode pair used for reverse-polarity blocking and transient clamping on separate channels. Use Value: 4 ns trr prevents latch-up during fast-rising surge events, while 500 mA IFRM handles sustained inductive kickback. |
| RF Signal Detector Circuit | USB-C Power Path Clamping |
Use Scenario: Demodulating amplitude-modulated RF signals in low-power wireless sensor nodes using envelope detection. IC Role / Device Role / Timing Role: High-speed switching diode pair acting as synchronous rectifier and peak detector. Use Value: 1.5 pF capacitance and sub-4 ns recovery minimize signal distortion and phase error at 100 MHz carrier frequencies. |
Use Scenario: Preventing reverse current flow and voltage overshoot during hot-plug insertion of USB-C power delivery adapters. IC Role / Device Role / Timing Role: Dual-anode configuration used for bidirectional overvoltage clamping on VBUS and CC lines. Use Value: Independent cathodes enable discrete grounding of each clamp path, reducing common-mode noise coupling in high-speed data lanes. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-speed dual diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ON Semiconductor NSR20F40NXT5G | Single diode in SOD-123FL; VF = 400 mV @ 200 mA; trr = 4 ns; VRRM = 40 V | Limited to lower-voltage (≤24 V) applications; no dual-diode integration | Select when ultra-low VF dominates over dual-channel integration and voltage headroom is constrained. |
| Diodes Inc. DSA20200Q-7 | Dual diode in SOT-23; trr = 3.5 ns; VRRM = 200 V; Cd = 2.0 pF; not AEC-Q101 qualified | Higher voltage rating but lacks automotive qualification and has higher capacitance | Prefer for industrial 100–200 V systems where AEC-Q101 is unnecessary and faster trr is prioritized. |
Compared with NSR20F40NXT5G and DSA20200Q-7, the BAS28,235 uniquely balances AEC-Q101 compliance, dual-diode independence, 85 V VRRM, and 1.5 pF capacitance-making it optimal for automotive and high-frequency industrial signal conditioning where integration, reliability, and RF performance intersect.
Availability
BAS28,235 is available at Aetrix Electronics and suitable for automotive body electronics, industrial PLC input stages, RF detector circuits, and USB-C power path protection requiring stable component supply across production lifecycles.
Supply support for BAS28,235 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 global semiconductor expert focused on essential efficiency technologies, delivering high-performance, reliable discrete and logic devices for automotive, industrial, and consumer markets.
The BAS28,235 belongs to Nexperia's AEC-Q101-qualified high-speed diode product line, engineered specifically for automotive signal integrity and industrial transient protection where speed, isolation, and thermal resilience are non-negotiable.
FAQ
Is BAS28,235 pin-compatible with BAS21,215?
No. BAS28,235 uses SOT143B (4-pin, dual isolated diodes), while BAS21,215 is in SOT23 (3-pin, common-cathode dual diode). Pin assignments differ: BAS28,235 has independent anodes (A1/A2) and cathodes (K1/K2), whereas BAS21,215 shares cathode connection. Interchange requires PCB redesign.
What is the maximum allowable soldering temperature profile for BAS28,235?
The SOT143B package supports standard lead-free reflow per J-STD-020: peak temperature ≤ 260 °C for ≤ 30 seconds, with ramp rate ≤ 3 °C/s. Preheat (150–200 °C) and soak (180–200 °C for 60–120 s) must precede reflow. Wave soldering requires < 260 °C contact time ≤ 5 s.
Can BAS28,235 be used in series or parallel configurations?
Parallel use is not recommended due to mismatched VF and thermal coupling risks. Series connection is permissible for increased VRRM (e.g., two diodes yield ~170 V), but requires matched units and balanced current sharing via ballast resistors to avoid overstress.
Does BAS28,235 support bidirectional signal clamping?
Yes - its two isolated diodes can be configured as back-to-back (anode-to-anode or cathode-to-cathode) for symmetrical ±V clamp behavior. With proper external biasing, it achieves ±75 V clamping range while preserving 4 ns trr performance on both polarities.
BAS28,235 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- -
- Package/Case:
- TO-253-4, TO-253AA
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Diode Configuration:
- 2 Independent
- Technology:
- Standard
- Voltage - DC Reverse (Vr) (Max):
- 75 V
- Current - Average Rectified (Io) (per Diode):
- 215mA (DC)
- 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:
- 1 µA @ 75 V
- Operating Temperature - Junction:
- 150°C (Max)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-143B
BAS28,235 FAQ
1.How can I place an order for BAS28,235 through Aetrix?
Please submit a Request for Quotation (RFQ) for BAS28,235 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 BAS28,235 reliable?
The price and inventory of BAS28,235 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BAS28,235 is usually 5 days.
3.What payment methods are accepted for BAS28,235?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BAS28,235 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BAS28,235?
BAS28,235 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BAS28,235 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 BAS28,235?
For technical support, including BAS28,235 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BAS28,235 requirements.
6.How does Aetrix verify that BAS28,235 is sourced from the original manufacturer or authorized distributors?
All BAS28,235 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 BAS28,235 meets industry standards.
7.What is the process for return or replacement of BAS28,235?
All BAS28,235 units undergo pre-shipment inspection (PSI). If there is an issue with BAS28,235, 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 BAS28,235 part is unused and in its original packaging.
Return procedure for BAS28,235:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BAS28,235 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
Tech Hub
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
LDO regulator guide covering low dropout voltage, power dissipation, thermal design, PSRR, output noise, capacitor stability, adjustable LDO circuits, LDO vs buck converter and datasheet selection chec…
Conditional Access Module guide covering CAM meaning, CI/CI+ interface, smart card authorization, DVB security workflow, TV and set-top box compatibility, internal electronics, ESD protection, connecto…
Guide to electronic component obsolescence covering EOL risk, PCN/PDN notices, last-time buy planning, replacement options, form-fit-function validation, counterfeit risk and BOM lifecycle management.
18650 battery guide covering lithium-ion cell basics, 3.6V/3.7V voltage, 4.2V charging, mAh and Wh capacity, protected cells, chargers, BMS, series-parallel packs, holders, welding and sourcing checks.…
Hall effect sensor guide covering working principle, linear and digital sensors, Arduino circuits, current sensing, speed detection, automotive applications, A3144 examples, signal filtering and datash…
Product Change Notification guide for electronic components, covering PCN meaning, PCN vs PDN/EOL, common change types, risk levels, form-fit-function review, engineering validation, BOM control, LTB/L…
A practical guide to blend door actuators, covering HVAC function, symptoms, location, AC and heater issues, reset and calibration, replacement cost, electrical diagnosis, compatibility checks, and rep…
