My Inquiry
My Account
Vishay General Semiconductor - Diodes Division SB140-E3/53
- Part No.:
- SB140-E3/53
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- Single Diodes
- Package:
- DO-204AL, DO-41, Axial
- Datasheet:
-
SB140-E3/53.pdf
- Description:
- DIODE SCHOTTKY 40V 1A DO204AL
- Quantity:
- Payment:
- Shipping:
Inventory:8,986
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
SB140-E3/53 from Vishay General Semiconductor is a 40 V, 1.0 A Schottky barrier plastic rectifier in DO-41 package, featuring 0.65 V forward voltage at 1.0 A, 50 A peak surge current, and -65 °C to +125 °C operating junction temperature - used in DC/DC converters and polarity protection circuits.
For engineers reviewing the SB140-E3/53 datasheet, SB140-E3/53 pinout, SB140-E3/53 application, or SB140-E3/53 equivalent, key selection criteria include forward voltage drop, reverse leakage at elevated temperature, surge capability, thermal resistance, and RoHS-compliant matte tin plating for reliable solderability.
Technical Context
This device implements a single-diode Schottky barrier structure with guardring overvoltage protection, enabling fast switching and low conduction losses. Its 0.65 V VF at 1.0 A and 10,000 V/μs dV/dt rating support high-frequency operation up to several MHz in switching power supplies.
The DO-41 package provides 15 °C/W junction-to-lead thermal resistance and meets UL 94 V-0 flammability requirements. Cathode identification via color band and JESD 201 Class 1A whisker resistance ensure robust assembly and field reliability.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 40 V - maximum repetitive reverse voltage before breakdown; sets DC blocking limit in polarity protection and freewheeling paths |
| IF(AV) | 1.0 A - average forward current at 0.375" lead length; defines continuous power handling in DC/DC converter outputs |
| VF @ 1.0 A | 0.65 V - forward voltage drop at rated current; directly determines conduction loss (0.65 W) and thermal load |
| IFSM | 50 A - non-repetitive surge current for 8.3 ms half-sine; supports inrush and fault-current tolerance in power rails |
| TJ max. | +125 °C - maximum operating junction temperature; constrains ambient derating per Fig. 1 in PCB-mounted configurations |
| RθJL | 15 °C/W - junction-to-lead thermal resistance; enables accurate thermal modeling when leads act as heat sinks |
| IR @ 40 V, 100 °C | 5.0 mA - reverse leakage at full rating and elevated temperature; impacts standby power in battery-backed systems |
Pinout & Package
Package: DO-41 (DO-204AL), axial-leaded, epoxy-molded case with UL 94 V-0 rating. Cathode indicated by color band on body.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (unbanded end) | Forward current entry point | Connects to lower-potential side (e.g., ground or switch node) in freewheeling or polarity protection |
| Cathode (banded end) | Forward current exit / reverse blocking terminal | Connects to higher-potential rail; color band ensures unambiguous orientation during manual or automated placement |
Key Features
| Feature | Design Value |
|---|---|
| Guardring overvoltage protection | Prevents localized avalanche failure under transient overvoltage, improving reliability in noisy DC/DC environments |
| Low VF = 0.65 V @ 1.0 A | Reduces conduction loss by ~30% vs. comparable silicon rectifiers, lowering thermal stress in compact converters |
| Extremely fast switching | Enables operation beyond 100 kHz without significant reverse recovery loss, critical for high-efficiency SMPS designs |
| JESD 201 Class 1A whisker resistance | Eliminates tin whisker risk in long-life industrial applications where lead-free soldering is required |
| Matte tin plated leads | Ensures consistent wetting and joint integrity per J-STD-002, reducing voiding and cold-solder joint risk |
Applications
| DC/DC Converters | Polarity Protection |
|---|---|
Use Scenario: Output rectification in 5–24 V input buck converters delivering up to 1 A to microcontrollers or sensors. IC Role / Device Role / Timing Role: Freewheeling diode conducting during low-side switch off-time; clamps inductive kickback and recovers energy. Use Value: 0.65 V VF minimizes power loss and self-heating, enabling stable 1 A output without heatsinking at 50 °C ambient. | Use Scenario: Reverse-voltage protection on 12 V automotive accessory inputs exposed to accidental battery reversal. IC Role / Device Role / Timing Role: Series-blocking diode placed between connector and downstream regulator; conducts only during correct polarity. Use Value: 40 V VRRM exceeds 12 V system transients (e.g., load dump), while 50 A IFSM survives brief short-circuit events. |
| Low-Voltage Inverters | Freewheeling Diodes |
Use Scenario: Output stage of 24 V AC inverters driving small induction motors or LED arrays. IC Role / Device Role / Timing Role: Synchronous rectification companion in half-bridge topology; handles bidirectional current during dead-time intervals. Use Value: Fast switching and low VF reduce switching losses and improve inverter efficiency above 20 kHz carrier frequencies. | Use Scenario: Inductive load suppression in relay drivers or solenoid controls in industrial PLC I/O modules. IC Role / Device Role / Timing Role: Clamp diode across coil terminals; provides low-impedance path for stored magnetic energy decay. Use Value: 10,000 V/μs dV/dt rating prevents false triggering during rapid current collapse, ensuring clean turn-off waveforms. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Schottky rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SB140-E3/73 | Same electrical specs and DO-41 package; differs only in packaging format (ammo pack vs. tape-and-reel) | No functional difference; selected based on SMT line feed mechanism and volume replenishment cadence | Choose SB140-E3/73 for manual or semi-automated assembly requiring smaller lot sizes and faster changeover |
| SS14-E3/57T | Same 40 V VRRM and 1.0 A IF(AV), but SMC (DO-214AA) surface-mount package; VF = 0.55 V @ 1.0 A | Requires PCB layout change; better thermal performance (RθJA ≈ 75 °C/W vs. 50 °C/W) but no lead-based heat sinking | Choose SS14-E3/57T for space-constrained, reflow-only designs where lower VF justifies footprint redesign |
Compared with SB140-E3/73, SB140-E3/53 offers identical performance in tape-and-reel delivery for high-volume pick-and-place; versus SS14-E3/57T, it trades surface-mount compatibility for superior lead-based thermal dissipation and through-hole assembly flexibility.
Availability
SB140-E3/53 is available at Aetrix Electronics and suitable for DC/DC converters, polarity protection circuits, and freewheeling diode applications requiring stable component supply, RoHS compliance, and proven field reliability in industrial and automotive-adjacent systems.
Supply support for SB140-E3/53 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
Vishay General Semiconductor is a global leader in discrete semiconductors, specializing in diodes, rectifiers, MOSFETs, and optoelectronics with emphasis on ruggedness, precision, and manufacturability.
The SBx40 series belongs to Vishay's commercial-grade Schottky rectifier product line, engineered for cost-sensitive, high-volume power conversion and protection functions in consumer, industrial, and computing power supplies.
FAQ
What is the maximum junction temperature for SB140-E3/53?
The SB140-E3/53 has a maximum operating junction temperature of +125 °C. This rating applies under specified thermal conditions, including 0.375" (9.5 mm) lead length per Figure 1 in the datasheet. Exceeding this temperature may degrade long-term reliability or cause thermal runaway. Derating curves must be applied for ambient temperatures above 50 °C or when mounted with shorter leads. The SB140-E3/53 is not rated for +150 °C operation - that specification applies only to SB150 and SB160 variants.
Does SB140-E3/53 have a RoHS-compliant finish?
Yes, the SB140-E3/53 features matte tin-plated leads compliant with RoHS Directive 2011/65/EU and passes JESD 201 Class 1A whisker testing. The E3 suffix explicitly denotes RoHS-compliant, commercial-grade construction. Lead plating meets J-STD-002 and JESD 22-B102 solderability standards, ensuring reliable reflow and wave solder joints without post-process cleaning.
What is the forward voltage drop of SB140-E3/53 at 1.0 A?
The SB140-E3/53 exhibits a maximum instantaneous forward voltage of 0.65 V at 1.0 A and TA = 25 °C, per the Electrical Characteristics table. This value increases slightly with temperature and is guaranteed not to exceed 0.75 V at TJ = 125 °C. The low VF directly reduces conduction loss to ≤0.75 W at full rated current, supporting thermally constrained layouts.
Can SB140-E3/53 replace SB130 or SB150 in a design?
No - SB140-E3/53 is not a direct replacement for SB130 (30 V VRRM) or SB150 (50 V VRRM). Its 40 V VRRM falls between them and must be validated against system-level reverse voltage transients. Substituting without analysis risks overvoltage failure (if used in place of SB150) or unnecessary derating (if replacing SB130). Always verify reverse blocking margin using worst-case transient models before cross-part usage.
What does the /53 suffix indicate in SB140-E3/53?
The /53 suffix in SB140-E3/53 specifies the packaging configuration: 5,500-piece quantity in 13" diameter paper tape and reel, per Vishay's ordering nomenclature. It does not affect electrical or thermal specifications. Other variants like /73 denote ammo pack packaging. All SB140-E3/xx parts share identical die, DO-41 package, and performance characteristics - only the delivery format differs.
SB140-E3/53 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Series:
- -
- Package/Case:
- DO-204AL, DO-41, Axial
- Packaging:
- Cut Tape (CT)
- Product Status:
- Active
- Technology:
- Schottky
- Voltage - DC Reverse (Vr) (Max):
- 40 V
- Current - Average Rectified (Io):
- 1A
- Voltage - Forward (Vf) (Max) @ If:
- 480 mV @ 1 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- -
- Current - Reverse Leakage @ Vr:
- 500 µA @ 40 V
- Capacitance @ Vr, F:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- DO-204AL (DO-41)
- Operating Temperature - Junction:
- -65°C ~ 125°C
SB140-E3/53 FAQ
1.How can I place an order for SB140-E3/53 through Aetrix?
Please submit a Request for Quotation (RFQ) for SB140-E3/53 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 SB140-E3/53 reliable?
The price and inventory of SB140-E3/53 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SB140-E3/53 is usually 5 days.
3.What payment methods are accepted for SB140-E3/53?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SB140-E3/53 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SB140-E3/53?
SB140-E3/53 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SB140-E3/53 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 SB140-E3/53?
For technical support, including SB140-E3/53 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SB140-E3/53 requirements.
6.How does Aetrix verify that SB140-E3/53 is sourced from the original manufacturer or authorized distributors?
All SB140-E3/53 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 SB140-E3/53 meets industry standards.
7.What is the process for return or replacement of SB140-E3/53?
All SB140-E3/53 units undergo pre-shipment inspection (PSI). If there is an issue with SB140-E3/53, 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 SB140-E3/53 part is unused and in its original packaging.
Return procedure for SB140-E3/53:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SB140-E3/53 Tags
-
1N4448X-TP
Micro Commercial Co
-
1N4148WX-TP
Micro Commercial Co
-
1N4148TR
onsemi
-
MMSD4148T1G
onsemi
-
MMBD914LT3G
onsemi
-
BAS16HT1G
onsemi
-
1N914BWT
onsemi
-
BAS21LT1G
onsemi
-
LL4148
onsemi
-
BAS16LT1G
onsemi
-
MMSD914T1G
onsemi
-
BAV21W-7-F
Diodes Incorporated
Tech Hub
Comparator circuit design covering voltage thresholds, input limits, open-collector outputs, LM393 wiring, op-amp differences, hysteresis, timing, window detection and practical fault diagnosis.
Schmitt triggers use separate rising and falling thresholds to stabilize slow or noisy signals. This guide covers hysteresis, 74HC14 and 74HCT14 selection, comparator calculations, RC oscillators and p…
Counterfeit components can hide behind convincing markings and passing basic function tests. This engineering reference covers source traceability, external inspection, X-ray, XRF, electrical testing, …
A practical engineering and sourcing framework covering lifecycle verification, lifetime-buy calculations, replacement qualification, supplier checks and counterfeit-risk controls.
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
