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Diodes Incorporated B250A-13
- Part No.:
- B250A-13
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
B250A-13.pdf
- Description:
- DIODE SCHOTTKY 50V 2A SMA
- Quantity:
- Payment:
- Shipping:
Inventory:4,726
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Product details
Overview
B250A-13 from Diodes Incorporated is a 2.0A surface-mount Schottky barrier rectifier in SMA package, rated for 50V peak repetitive reverse voltage, 0.70V max forward voltage at 2.0A, and 50A non-repetitive surge current - used in low-voltage DC/DC converter freewheeling paths and automotive body control module polarity protection.
For engineers reviewing the B250A-13 datasheet, B250A-13 pinout, B250A-13 application, or B250A-13 equivalent, key selection criteria include forward voltage drop at rated current, thermal resistance (25°C/W junction-to-lead), AEC-Q101 qualification status, RoHS/Green compliance, and SMB/SMA package compatibility with automated reflow assembly.
Technical Context
This Schottky diode employs guard ring die construction to suppress transient-induced avalanche breakdown and sustain reliable operation under repetitive 50A surge conditions. Its low VF and fast switching enable high-efficiency power conversion in 100–500kHz DC/DC topologies without reverse recovery loss.
The device operates across –65°C to +150°C and is qualified to AEC-Q101 for automotive use; electrically identical to standard-grade B250A-13-F but with PPAP-capable traceability and extended temperature validation per automotive requirements.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 50 V - Maximum reverse blocking capability before breakdown; sets upper limit for input voltage rails in buck converters or reverse-polarity protection circuits. |
| IF(AV) | 2.0 A - Continuous average forward current rating; defines steady-state power handling in freewheeling or OR-ing applications. |
| VF @ 2.0A | 0.70 V max - Forward voltage drop at full rated current; directly determines conduction loss (1.4W max at 2A) and thermal load on PCB pad. |
| IFSM | 50 A - Non-repetitive surge current capacity; supports inrush current tolerance during hot-swap or load-dump events in automotive systems. |
| RθJL | 25 °C/W - Junction-to-lead thermal resistance (SMA package); enables direct thermal coupling to copper pour for passive cooling without heatsink. |
| IR @ 50V | 0.5 mA max @ 25°C - Reverse leakage current; impacts standby power in always-on battery-backed modules. |
Pinout & Package
Package: SMA (DO-214AC), molded plastic case with UL 94V-0 flammability rating, matte tin-plated terminals, cathode band polarity marking, and moisture sensitivity level 1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry point | Connected to lower-potential node (e.g., switch node in buck converter or battery negative in polarity protection). |
| Cathode | Forward current exit / reverse blocking terminal | Connected to higher-potential node (e.g., output rail or battery positive); cathode band identifies this terminal on top surface. |
Key Features
| Feature | Design Value |
|---|---|
| Guard ring die construction | Suppresses edge avalanche and improves transient robustness - critical for unclamped inductive flyback in automotive solenoid drivers. |
| AEC-Q101 qualification | Validated for automotive under-hood environments including temperature cycling, HAST, and mechanical shock - enables use in BCM, lighting, and ADAS power stages. |
| Lead-free & Halogen-free "Green" | Meets RoHS 2 and JEDEC J-STD-020 Level 1 - eliminates post-reflow cleaning and supports high-reliability industrial rework processes. |
| 260°C/10s solderability | Compatible with standard lead-free reflow profiles - ensures interconnect integrity without terminal delamination or plating degradation. |
Applications
| Automotive Body Control Module (BCM) | USB-C Power Delivery Input Protection |
|---|---|
Use Scenario: Reverse polarity protection on 12V supply rail feeding microcontroller, CAN transceiver, and LED drivers. IC Role / Device Role / Timing Role: Unidirectional current gate preventing damage during battery jump-start misconnection. Use Value: 0.70V VF minimizes voltage drop across protection path, preserving >11.3V at MCU input under 2A load while surviving 50A jump-start surges. | Use Scenario: Polarity enforcement and ESD-robust input stage for 20V USB PD source port. IC Role / Device Role / Timing Role: Low-loss DC blocking diode placed between connector and buck controller input. Use Value: 50V VRRM accommodates 20V PD + margin; 200pF CT avoids signal integrity issues on CC lines; guard ring withstands IEC 61000-4-2 contact discharge. |
| Industrial DC/DC Converter Freewheeling | Low-Voltage Solar Charge Controller |
Use Scenario: Synchronous rectifier replacement in 48V→12V isolated flyback secondary side. IC Role / Device Role / Timing Role: Fast-recovery freewheeling path during MOSFET off-time. Use Value: Near-zero reverse recovery charge eliminates switching loss spike; 25°C/W RθJL allows 2A continuous operation on 1-in² 2oz copper without forced air. | Use Scenario: Blocking diode between 18–22V PV panel string and 12V battery bank. IC Role / Device Role / Timing Role: Prevents nighttime battery discharge through panel junction box wiring. Use Value: 0.5mA IR max at 25°C limits night drain to <13mAh/day per diode; 150°C TJ rating supports rooftop ambient up to 85°C ambient with derating. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Schottky rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SB250-E3/54 (Vishay) | Same 50V VRRM, 2A IF(AV), but SMB package (RθJL = 20°C/W); VF = 0.72V max @ 2A. | Slightly lower thermal resistance suits higher ambient layouts; SMB footprint requires PCB redesign vs. SMA. | Select when board space allows larger SMB pad layout and thermal performance margin is prioritized over footprint size. |
| B250Q-13 (Diodes Inc.) | Identical electrical specs and SMA package, but AEC-Q101 automotive grade with PPAP documentation support. | Required for OEM automotive production; not needed for industrial or consumer prototypes. | Choose B250Q-13 only when automotive qualification evidence (PPAP, test reports) is contractually mandated. |
Compared with SB250-E3/54 and B250Q-13, the B250A-13 offers optimal cost-performance balance for industrial and commercial designs where AEC-Q101 is unnecessary and SMA footprint is fixed - delivering identical core rectification performance with simplified sourcing and no automotive overhead.
Availability
B250A-13 is available at Aetrix Electronics and suitable for automotive body control modules, USB-C power delivery input protection, industrial DC/DC converter freewheeling, and solar charge controllers requiring stable component supply and long-term manufacturability.
Supply support for B250A-13 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
Diodes Incorporated is a global manufacturer of discrete semiconductors and analog ICs, specializing in high-reliability power management, signal integrity, and protection solutions for automotive, industrial, and consumer markets.
The B220/A–B260/A series belongs to Diodes' standard Schottky rectifier product line, engineered for low-loss, high-surge-capability DC power conversion in space-constrained surface-mount applications.
FAQ
Is B250A-13 AEC-Q101 qualified?
No - B250A-13 is the standard-grade version. The automotive-qualified variant is B250Q-13, which carries full AEC-Q101 test reports and PPAP documentation. Both share identical electrical and thermal specifications, but only B250Q-13 meets automotive production audit requirements.
What is the maximum operating temperature for B250A-13?
The B250A-13 has an operating junction temperature range of –65°C to +150°C. At ambient temperatures above 75°C, derating applies: Fig. 4 in DS13004 shows forward current must be reduced linearly to 1.0A at +125°C ambient when mounted on FR-4 with minimum pad layout.
Can B250A-13 replace B240A-13 in a 40V design?
No - B250A-13 has 50V VRRM and is safe for ≤50V circuits, but B240A-13 (40V VRRM) is not rated for 50V operation. Substituting upward in voltage rating is acceptable if package, VF, and thermal constraints align; however, B250A-13's 0.70V VF is higher than B240A-13's 0.50V VF, increasing conduction loss by ~40% at 2A.
Does B250A-13 have a cathode notch or band?
Yes - polarity is marked by a cathode band on the top surface of the SMA package. Per DS13004, the cathode band corresponds to the cathode terminal; the opposite end is the anode. This marking is visible under standard optical inspection and compatible with automated optical alignment systems.
B250A-13 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- DO-214AC, SMA
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- Technology:
- Schottky
- Voltage - DC Reverse (Vr) (Max):
- 50 V
- Current - Average Rectified (Io):
- 2A
- Voltage - Forward (Vf) (Max) @ If:
- 700 mV @ 2 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- -
- Current - Reverse Leakage @ Vr:
- 500 µA @ 50 V
- Capacitance @ Vr, F:
- 200pF @ 4V, 1MHz
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SMA
- Operating Temperature - Junction:
- -65°C ~ 150°C
B250A-13 FAQ
1.How can I place an order for B250A-13 through Aetrix?
Please submit a Request for Quotation (RFQ) for B250A-13 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 B250A-13 reliable?
The price and inventory of B250A-13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for B250A-13 is usually 5 days.
3.What payment methods are accepted for B250A-13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for B250A-13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for B250A-13?
B250A-13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your B250A-13 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 B250A-13?
For technical support, including B250A-13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your B250A-13 requirements.
6.How does Aetrix verify that B250A-13 is sourced from the original manufacturer or authorized distributors?
All B250A-13 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 B250A-13 meets industry standards.
7.What is the process for return or replacement of B250A-13?
All B250A-13 units undergo pre-shipment inspection (PSI). If there is an issue with B250A-13, 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 B250A-13 part is unused and in its original packaging.
Return procedure for B250A-13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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