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Diodes Incorporated SB130-B
- Part No.:
- SB130-B
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Diodes
- Package:
- DO-204AL, DO-41, Axial
- Datasheet:
-
SB130-B.pdf
- Description:
- DIODE SCHOTTKY 30V 1A DO41
- Quantity:
- Payment:
- Shipping:
Inventory:6,350
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Product details
Overview
SB130-B from Diodes Incorporated is a 1.0A, 30V Schottky barrier rectifier in DO-41 package, featuring 0.70V forward voltage at 1.0A, 40A non-repetitive surge capability, and guard ring die construction for transient protection. It serves as a low-loss freewheeling or polarity protection diode in DC-DC converters and automotive auxiliary power supplies.
For engineers reviewing the SB130-B datasheet, SB130-B pinout, SB130-B application, or SB130-B equivalent, key selection criteria include its 30V VRRM rating, 0.70V VFM at 1.0A, DO-41 thermal resistance (RθJL = 15°C/W), and suitability for 60Hz/low-voltage rectification with 20% capacitive load derating.
Technical Context
This Schottky rectifier uses a planar guard ring die structure to enhance transient robustness without compromising forward conduction. Its low forward voltage drop and fast switching enable high-efficiency operation in low-voltage (<30V) DC power paths where reverse recovery loss must be minimized.
The device operates across –65°C to +150°C junction temperature range and exhibits 0.5mA peak reverse current at rated 30V DC blocking voltage and 25°C. Thermal performance is defined by RθJL = 15°C/W (junction-to-lead) and RθJA = 50°C/W (junction-to-ambient).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 30 V - Maximum repetitive reverse voltage before breakdown; sets upper limit for circuit blocking safety margin |
| IF(AV) | 1.0 A - Average forward current rating at TA = 25°C with 9.5mm lead length; defines continuous DC output capability |
| VFM | 0.70 V @ 1.0A - Forward voltage drop determining conduction loss and thermal rise in power path |
| IFSM | 40 A - Non-repetitive 8.3ms surge current capacity; supports inrush and fault-current handling |
| IRM | 0.5 mA @ 30V, 25°C - Reverse leakage defining off-state power loss and signal integrity in high-impedance nodes |
| RθJL | 15 °C/W - Junction-to-lead thermal resistance; enables direct heatsinking via PCB copper or lead frame |
Pinout & Package
DO-41 molded plastic package with axial leads; cathode identified by band marking; weight ≈ 0.3 g; UL 94V-0 flammability rating; lead finish: bright tin, solderable per MIL-STD-202 Method 208.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry point | Connected to lower-potential side of power source in rectification; determines forward bias direction |
| Cathode | Forward current exit / reverse blocking terminal | Marked with band; ties to higher-potential node in freewheeling; blocks >30V reverse voltage |
Key Features
| Feature | Design Value |
|---|---|
| Guard ring die construction | Improves ESD and transient immunity without increasing VFM; validated per JEDEC surge testing |
| Low forward voltage drop | 0.70V at 1.0A reduces conduction loss by ~30% vs. comparable PN rectifiers, lowering thermal stress |
| High surge capability | 40A IFSM supports capacitor-input filter inrush and motor commutation spikes in 12V systems |
| RoHS-compliant lead finish | Bright tin plating ensures reliable solder wetting and long-term intermetallic stability in reflow processes |
Applications
| DC-DC Converter Freewheeling | Automotive Auxiliary Power |
|---|---|
Use Scenario: Used as catch diode in 12V-to-5V buck converter for infotainment head unit power supply. IC Role / Device Role: Freewheeling path for inductor current during high-side switch off-time; prevents voltage spike and enables energy recycling. Use Value: 0.70V VFM minimizes power loss during continuous conduction mode, improving efficiency by ≥2% over PN alternatives. | Use Scenario: Polarity protection in USB-C power delivery module for rear-seat charging ports. IC Role / Device Role: Reverse voltage blocker preventing damage from accidental battery cable reversal during service. Use Value: 30V VRRM provides 2× margin over 12V nominal system, while DO-41 axial form factor fits constrained board space. |
| Low-Voltage Inverter Output | Industrial Sensor Power Rail |
Use Scenario: Output rectifier in 24V AC-to-DC inverter supplying control logic for HVAC actuators. IC Role / Device Role: Half-wave rectification of high-frequency (20–50kHz) transformer output; handles 60Hz-equivalent RMS current. Use Value: Fast Schottky switching eliminates reverse recovery loss, reducing heat generation in sealed enclosures. | Use Scenario: Input protection diode on 3.3V rail powering MEMS pressure sensor in pump controller PCB. IC Role / Device Role: Prevents backfeed from downstream LDO during main supply dropout; maintains rail isolation. Use Value: 0.5mA IRM at 25°C ensures <1.7µW standby leakage, preserving battery life in always-on monitoring mode. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Schottky rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SB130-T | Same die and electrical specs; tape-and-reel packaging (5K/reel) vs. bulk (1K) | Designed for automated SMT placement; not suitable for manual or through-hole prototyping | Select SB130-T for volume production with pick-and-place; SB130-B preferred for low-volume assembly or repair |
| SS13 | 1.0A/30V Schottky in SMA package; VFM = 0.55V @ 1.0A; RθJA = 75°C/W | SMA surface-mount footprint replaces axial DO-41; requires PCB layout change | Choose SS13 only when board space constraints prohibit axial components and lower VFM justifies re-layout cost |
Compared with SB130-T and SS13, SB130-B offers identical electrical performance in a hand-solderable, low-cost bulk format-ideal for engineering validation and small-batch builds where packaging flexibility and ease of use outweigh automation requirements.
Availability
SB130-B is available at Aetrix Electronics and suitable for DC-DC converter freewheeling, automotive polarity protection, and industrial sensor power rail applications requiring stable component supply and long-term obsolescence management.
Supply support for SB130-B 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, headquartered in Plano, Texas, with design and manufacturing operations across Asia and the Americas.
SB130-B belongs to the SB120–SB160 Schottky rectifier product line, engineered for high-efficiency, low-voltage (<60V) power conversion in cost-sensitive industrial and automotive subsystems.
FAQ
What is the maximum operating junction temperature for SB130-B?
The SB130-B has a specified operating junction temperature range of –65°C to +150°C. This extended high-temperature rating allows reliable operation in under-hood automotive environments and sealed industrial enclosures where ambient temperatures exceed 100°C, provided thermal design respects RθJL = 15°C/W and adequate lead copper area is used.
Is SB130-B suitable for capacitive-input filter applications?
Yes, but with 20% average current derating per the datasheet. For example, at 1.0A rated IO, maximum continuous current in capacitive-input rectifiers is limited to 0.8A to prevent thermal runaway caused by high peak currents and reduced conduction angle.
Does SB130-B meet automotive qualification standards?
No-SB130-B is not AEC-Q101 qualified. While Diodes offers AEC-Q101 versions in this family (e.g., SB130Q), SB130-B is intended for commercial and industrial use. Automotive designs requiring PPAP or IATF 16949 compliance must specify the Q-suffix variant.
How does the guard ring die construction improve reliability?
The guard ring structure surrounds the active Schottky junction to suppress edge breakdown and mitigate localized electric field crowding. This increases transient robustness-validated by 40A IFSM rating-and reduces sensitivity to surface contamination or mechanical stress during board flexure or thermal cycling.
SB130-B Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- DO-204AL, DO-41, Axial
- Packaging:
- Bulk
- Product Status:
- Obsolete
- Technology:
- Schottky
- Voltage - DC Reverse (Vr) (Max):
- 30 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:
- 500 µA @ 30 V
- Capacitance @ Vr, F:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- DO-41
- Operating Temperature - Junction:
- -65°C ~ 125°C
SB130-B FAQ
1.How can I place an order for SB130-B through Aetrix?
Please submit a Request for Quotation (RFQ) for SB130-B 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 SB130-B reliable?
The price and inventory of SB130-B are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SB130-B is usually 5 days.
3.What payment methods are accepted for SB130-B?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SB130-B transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SB130-B?
SB130-B orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SB130-B 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 SB130-B?
For technical support, including SB130-B datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SB130-B requirements.
6.How does Aetrix verify that SB130-B is sourced from the original manufacturer or authorized distributors?
All SB130-B 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 SB130-B meets industry standards.
7.What is the process for return or replacement of SB130-B?
All SB130-B units undergo pre-shipment inspection (PSI). If there is an issue with SB130-B, 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 SB130-B part is unused and in its original packaging.
Return procedure for SB130-B:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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