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Diodes Incorporated B120AE-13
- Part No.:
- B120AE-13
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
B120AE-13.pdf
- Description:
- DIODE SCHOTTKY 20V 1A SMA
- Quantity:
- Payment:
- Shipping:
Inventory:7,572
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Product details
Overview
B120AE-13 from Diodes Incorporated is a 20 V, 1 A surface-mount Schottky barrier rectifier in SMA package, featuring 0.5 V max forward voltage at 1 A and 0.1 mA max reverse leakage at 20 V and +25°C, optimized for boost, blocking, and recirculating diode functions in DC/DC converters and power supplies.
For engineers reviewing the B120AE-13 datasheet, B120AE-13 pinout, B120AE-13 application, or B120AE-13 equivalent, key selection criteria include low VF for efficiency, high-temperature IR stability, RoHS-compliant lead-free finish, and SMA package thermal performance in space-constrained power stages.
Technical Context
This Schottky rectifier uses a planar metal-semiconductor junction to achieve low forward conduction loss and fast switching with no minority-carrier storage delay. Its 20 V VRRM rating targets low-voltage DC/DC output rectification where reverse recovery time is irrelevant but forward drop and thermal leakage are critical.
The device operates across –55°C to +150°C with RθJA = 95°C/W (SMA) and exhibits stable 0.1 mA IR at 25°C and ≤6.1 mA at 125°C under 20 V bias - enabling reliable operation in thermally demanding environments without thermal runaway risk.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 20 V - Maximum repetitive reverse voltage before breakdown; sets upper limit for blocking capability in low-voltage power rails. |
| IO(AVG) | 1 A - Continuous average forward current; defines steady-state power handling in rectifier applications. |
| VF(MAX) | 0.5 V @ 1 A, +25°C - Low conduction loss directly improves converter efficiency and reduces heat generation. |
| IR(MAX) | 0.1 mA @ 20 V, +25°C - Minimal leakage preserves system standby power and prevents thermal instability at elevated temperatures. |
| RθJA | 95°C/W - Thermal resistance from junction to ambient on standard FR-4 PCB; determines temperature rise under load. |
| CT | 50 pF @ 4 V, 1 MHz - Junction capacitance affects high-frequency switching noise and EMI in SMPS designs. |
Pinout & Package
Package: SMA (DO-214AC), surface-mount plastic case with cathode band marking; dimensions: 2.29–2.92 mm (A) × 4.00–4.60 mm (B) × 1.27–1.63 mm (C); weight ≈ 0.063 g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry point | Connected to lower-potential side of circuit; must handle full IO with minimal trace resistance. |
| Cathode | Forward current exit / reverse blocking terminal | Marked by band; connects to higher-potential node; carries return current and blocks reverse voltage. |
Key Features
| Feature | Design Value |
|---|---|
| Low VF (0.5 V max @ 1 A) | Reduces conduction loss by ~30% vs. comparable PN rectifiers, lowering thermal stress in compact layouts. |
| Stable high-temp IR (≤6.1 mA @ 125°C) | Prevents thermal runaway in enclosed or high-ambient environments such as automotive cabin modules. |
| RoHS-compliant matte tin finish | Ensures solderability per MIL-STD-202 Method 208 and eliminates lead-based contamination in final assembly. |
| Halogen- and antimony-free "Green" compound | Meets IEC 61249-2-21 requirements with <900 ppm Br, <900 ppm Cl, <1000 ppm Sb - supports eco-friendly manufacturing. |
Applications
| Boost Diode in DC/DC Converters | Blocking Diode in Solar Charge Controllers |
|---|---|
Use Scenario: Used in step-up converter output stage to prevent backflow from output capacitor to inductor during switch-off phase. IC Role / Device Role / Timing Role: Unidirectional current valve enabling energy transfer timing control via synchronous or asynchronous topology. Use Value: 0.5 V VF minimizes voltage headroom loss, preserving regulation margin; 20 V VRRM matches typical 12 V input systems with safety margin. | Use Scenario: Placed between photovoltaic panel and battery to prevent reverse discharge at night or low-light conditions. IC Role / Device Role / Timing Role: Standby-mode isolation element with zero recovery delay, ensuring immediate blocking upon voltage reversal. Use Value: 0.1 mA IR at 25°C limits nighttime battery drain; stable leakage up to 125°C maintains reliability in unventilated enclosures. |
| Recirculating Diode in Motor Drivers | Output Rectifier in USB-C PD Adapters |
Use Scenario: Freewheeling path for inductive kickback when H-bridge MOSFETs turn off in brushed DC motor control. IC Role / Device Role / Timing Role: Fast passive clamp providing continuous current loop during dead-time intervals. Use Value: Schottky architecture eliminates reverse recovery charge, preventing voltage spikes that could damage gate drivers or cause EMI. | Use Scenario: Secondary-side rectification in 5–20 V USB Power Delivery adapters delivering up to 100 W. IC Role / Device Role / Timing Role: High-efficiency output stage component operating continuously at 1 A average load. Use Value: 95°C/W RθJA enables operation without heatsink at 1 A in standard 2-layer PCB layouts, reducing bill-of-materials cost. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Schottky rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SB120-TB-E3 (Vishay) | Same 20 V VRRM, 1 A IO, SMA package; VF = 0.5 V @ 1 A, but IR = 0.2 mA @ 20 V, +25°C - 2× higher leakage. | Suitable for less thermally constrained applications; not recommended where IR-driven standby loss is critical. | Select B120AE-13 over SB120-TB-E3 when leakage-limited battery life or high-temperature stability is required. |
| 1N5817TR (ON Semiconductor) | 20 V VRRM, 1 A IO, DO-41 through-hole; VF = 0.45 V @ 1 A, but RθJA ≈ 120°C/W - significantly worse thermal performance. | Only viable in low-power, non-SMT designs with ample airflow; incompatible with automated SMT assembly. | Choose B120AE-13 for surface-mount compatibility, superior thermal resistance, and RoHS compliance in modern power designs. |
Compared with SB120-TB-E3 and 1N5817TR, B120AE-13 delivers the lowest combination of forward voltage, reverse leakage, and junction-to-ambient thermal resistance in an RoHS-compliant SMA package - making it optimal for thermally dense, efficiency-critical SMT power stages.
Availability
B120AE-13 is available at Aetrix Electronics and suitable for DC/DC converters, solar charge controllers, motor driver recirculation paths, and USB-C PD adapter output rectification requiring stable component supply and consistent parametric performance across production lots.
Supply support for B120AE-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 industrial, computing, and consumer markets.
B120AE-13 belongs to Diodes' general-purpose Schottky rectifier product line, engineered for cost-effective, high-efficiency low-voltage rectification in space- and thermal-constrained power conversion systems.
FAQ
What is the maximum junction temperature for continuous operation of B120AE-13?
The B120AE-13 has an operating junction temperature range of –55°C to +150°C. For continuous operation at rated 1 A average current, thermal design must ensure TJ remains ≤150°C - achievable with RθJA = 95°C/W and ambient ≤75°C on standard FR-4 PCB per datasheet Figure 4 derating curve.
Is B120AE-13 compatible with lead-free reflow soldering processes?
Yes. B120AE-13 features a matte tin annealed finish over copper leadframe and is qualified for lead-free reflow per J-STD-020. Its moisture sensitivity level is Grade 1, allowing unlimited floor life at ≤30°C/60% RH without dry-pack requirements.
How does the reverse leakage of B120AE-13 compare at elevated temperatures?
At 20 V reverse bias, IR is 0.1 mA max at +25°C and increases to 6.1 mA max at +125°C. This controlled increase - verified in datasheet Figure 2 - ensures predictable thermal behavior without runaway, unlike many PN diodes whose leakage rises exponentially beyond 100°C.
Can B120AE-13 be used in place of B120BE-13?
No. B120AE-13 uses the SMA (DO-214AC) package, while B120BE-13 uses SMB (DO-214AA). Though electrically identical, their footprints, thermal resistance (RθJA 95 vs. 90°C/W), and pad layouts differ - requiring separate PCB designs and assembly tooling.
B120AE-13 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- DO-214AC, SMA
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Technology:
- Schottky
- Voltage - DC Reverse (Vr) (Max):
- 20 V
- Current - Average Rectified (Io):
- 1A
- Voltage - Forward (Vf) (Max) @ If:
- 500 mV @ 1 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- -
- Current - Reverse Leakage @ Vr:
- 100 µA @ 20 V
- Capacitance @ Vr, F:
- 50pF @ 4V, 1MHz
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SMA
- Operating Temperature - Junction:
- -55°C ~ 150°C
B120AE-13 FAQ
1.How can I place an order for B120AE-13 through Aetrix?
Please submit a Request for Quotation (RFQ) for B120AE-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 B120AE-13 reliable?
The price and inventory of B120AE-13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for B120AE-13 is usually 5 days.
3.What payment methods are accepted for B120AE-13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for B120AE-13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for B120AE-13?
B120AE-13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your B120AE-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 B120AE-13?
For technical support, including B120AE-13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your B120AE-13 requirements.
6.How does Aetrix verify that B120AE-13 is sourced from the original manufacturer or authorized distributors?
All B120AE-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 B120AE-13 meets industry standards.
7.What is the process for return or replacement of B120AE-13?
All B120AE-13 units undergo pre-shipment inspection (PSI). If there is an issue with B120AE-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 B120AE-13 part is unused and in its original packaging.
Return procedure for B120AE-13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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