My Inquiry
My Account
Vishay SL04-HE3_A18
- Part No.:
- SL04-HE3_A18
- Manufacturer:
- Vishay
- Category:
- Single Diodes
- Package:
- DO-219AB
- Datasheet:
-
SL04-HE3_A18.pdf
- Description:
- SCHOTTKY DIODE SMF DO219AB
- Quantity:
- Payment:
- Shipping:
Inventory:9,309
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
SL04-HE3_A18 from Vishay Semiconductors is a surface-mount Schottky rectifier diode in the eSMP® series, rated for 40 V repetitive peak reverse voltage and 1.1 A average forward current, with low forward voltage (0.47 V max at 1.1 A, 25 °C) and AEC-Q101 qualification for automotive use in DC/DC converters and polarity protection circuits.
For engineers reviewing the SL04-HE3_A18 datasheet, SL04-HE3_A18 pinout, SL04-HE3_A18 application, or SL04-HE3_A18 equivalent, key selection factors include its DO-219AB (SMF) package thermal resistance (RthJL = 22 K/W), junction temperature rating up to 175 °C, and verified performance under high-frequency switching and reflow soldering per J-STD-020 MSL level 1.
Technical Context
The SL04-HE3_A18 implements a single silicon Schottky barrier structure optimized for low forward voltage drop and fast recovery-no minority carrier storage, enabling high-efficiency operation in DC/DC converters and freewheeling paths. Its junction capacitance is 65 pF at 4.0 V and 1 MHz, supporting stable high-frequency behavior.
Thermally, it features a low RthJL of 22 K/W to the lead and operates across -55 °C to +175 °C storage and junction ranges. It withstands 40 A non-repetitive surge current (8.3 ms half-sine) and meets JESD 201 Class 2 whisker testing for reliability-critical deployments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 40 V - supports input rails up to 36 V nominal in automotive and industrial DC/DC stages |
| IF(AV) | 1.1 A - continuous conduction capability for compact power supplies with ≤1.5 W dissipation at typical VF |
| VF (max) | 0.54 V at 1.1 A, 25 °C - enables ≥92 % efficiency in 5 V–12 V buck converters at light-to-moderate load |
| IFSM | 40 A - handles inrush and transient overloads without bond-wire failure |
| RthJL | 22 K/W - allows direct thermal coupling to PCB copper pads for effective heat extraction without heatsinks |
| Junction Temp | 175 °C - enables operation in under-hood automotive environments and sealed industrial enclosures |
| AEC-Q101 | Qualified - validated for automotive-grade reliability including temperature cycling, HTRB, and ESD |
Pinout & Package
SL04-HE3_A18 uses the SMF (DO-219AB) surface-mount package: low-profile (0.85 mm height), cathode-indicated by color band, compatible with SOD-123W footprint and automated placement on 8 mm tape (10K/reel, MOQ 50K).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry point | Connected to lower-potential side (e.g., switch node in synchronous buck); requires adequate copper pour for thermal relief |
| Cathode | Forward current exit / reverse blocking terminal | Marked with color band; ties to output rail or ground return path; critical for polarity protection integrity |
Key Features
| Feature | Design Value |
|---|---|
| Low-profile SMF package | 0.85 mm height enables ultra-thin power modules and space-constrained automotive ECUs |
| AEC-Q101 qualification | Validated for automotive applications including engine control, ADAS power rails, and body electronics |
| MSL Level 1 rating | 260 °C peak reflow compatibility ensures robust assembly without moisture-induced popcorn failure |
| 175 °C junction rating | Supports sustained operation in thermally aggressive environments without derating below full current |
| 65 pF junction capacitance | Minimizes switching losses and EMI in >100 kHz DC/DC topologies with fast edge rates |
Applications
| Automotive DC/DC Converters | Industrial Polarity Protection |
|---|---|
Use Scenario: Step-down conversion from 12 V or 24 V battery to 3.3 V/5 V for infotainment and sensor modules. IC Role / Device Role / Timing Role: Freewheeling diode in asynchronous buck topology; conducts during high-side FET off-time. Use Value: 0.47 V max VF reduces conduction loss by ~35 % vs. standard PN diodes, improving thermal margin in sealed enclosures. | Use Scenario: Reverse-voltage blocking at main power input of PLC I/O modules and motor drives. IC Role / Device Role / Timing Role: Unidirectional current gate protecting downstream regulators and microcontrollers from accidental reverse connection. Use Value: 40 V VRRM and 175 °C Tj ensure fail-safe operation during field wiring errors and ambient temperature excursions. |
| High-Frequency Inverters | Commercial Power Adapters |
Use Scenario: Output rectification in resonant LLC inverters for LED drivers and HVAC blowers. IC Role / Device Role / Timing Role: High-speed output rectifier handling >200 kHz switching with minimal reverse recovery charge. Use Value: Schottky architecture eliminates Qrr, reducing switching loss and EMI generation compared to fast recovery diodes. | Use Scenario: Secondary-side rectification in compact wall adapters for consumer electronics. IC Role / Device Role / Timing Role: Low-loss output diode replacing larger SOD-123 devices to meet size and efficiency targets. Use Value: SMF package footprint matches SOD-123W layouts while delivering 15 % lower VF at 1 A, easing thermal design. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Schottky rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SB140-E3/52 | Same 40 V VRRM, but 1.0 A IF(AV); SOD-123FL package; no AEC-Q101 qualification | Suitable for commercial-only designs where automotive qualification is not required | Select when cost sensitivity outweighs automotive compliance and thermal performance is less constrained |
| SS14-HF | 40 V VRRM, 1.0 A IF(AV), 0.55 V VF max at 1 A; SMA package; AEC-Q101 qualified | Higher VF and larger SMA footprint limit board density vs. SL04-HE3_A18's SMF | Choose only if existing SMA layout prohibits SMF adoption and AEC-Q101 is mandatory |
Compared with SB140-E3/52 and SS14-HF, SL04-HE3_A18 delivers superior thermal performance (RthJL = 22 K/W vs. ≥40 K/W), higher current rating (1.1 A vs. 1.0 A), and tighter VF distribution-making it optimal for space- and efficiency-critical automotive and industrial power stages.
Availability
SL04-HE3_A18 is available at Aetrix Electronics and suitable for automotive DC/DC converters, industrial polarity protection circuits, and high-frequency inverter designs requiring stable component supply, AEC-Q101 compliance, and consistent thermal performance across production volumes.
Supply support for SL04-HE3_A18 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 Semiconductors is a global leader in discrete semiconductors, specializing in high-reliability diodes, MOSFETs, and optoelectronics for automotive, industrial, and computing markets.
The SL04-HE3_A18 belongs to Vishay's eSMP® Schottky rectifier product line, engineered specifically for high-efficiency, surface-mount power conversion in thermally demanding and safety-critical applications.
FAQ
What is the maximum junction temperature rating for SL04-HE3_A18?
The SL04-HE3_A18 has a maximum junction temperature rating of 175 °C, confirmed in the Vishay datasheet (Document Number: 85942, Rev. 1.8). This allows uninterrupted operation in under-hood automotive environments and sealed industrial enclosures where ambient temperatures exceed 105 °C. The SL04-HE3_A18 maintains full 1.1 A current capability up to this limit when properly mounted on ≥3 mm × 3 mm Cu pads.
Is SL04-HE3_A18 pin-compatible with SOD-123W footprint designs?
Yes, SL04-HE3_A18 uses the SMF (DO-219AB) package, which Vishay explicitly states is compatible with SOD-123W, SOD-123F, and SOD-123FL outlines. Its land pattern recommendation (1.3 mm × 1.3 mm pad, 2.9 mm center-to-center) aligns with standard SOD-123W layouts, enabling drop-in replacement without PCB revision-provided thermal and current requirements remain within SL04-HE3_A18's 1.1 A and 22 K/W RthJL limits.
Does SL04-HE3_A18 meet automotive reliability standards?
Yes, SL04-HE3_A18 is AEC-Q101 qualified, as stated in the Vishay datasheet under "FEATURES" and ordering code definition ("Base P/N-HE3 – RoHS-compliant and AEC-Q101 qualified"). This qualification covers stress tests including temperature cycling, high-temperature reverse bias (HTRB), and electrostatic discharge (ESD), confirming suitability for automotive power systems such as body control modules and ADAS domain controllers.
What is the typical forward voltage of SL04-HE3_A18 at 1.1 A and 100 °C?
At 1.1 A forward current and 100 °C junction temperature, the SL04-HE3_A18 exhibits a typical forward voltage of 0.43 V, with a maximum of 0.48 V, per the Electrical Characteristics table in the Vishay datasheet (Document Number: 85942). This low VF drift with temperature supports stable efficiency in thermally dynamic applications like engine bay-mounted DC/DC converters.
How does the thermal resistance of SL04-HE3_A18 compare to standard SOD-123 Schottky diodes?
SL04-HE3_A18 achieves RthJL = 22 K/W, significantly lower than typical SOD-123 devices (≥40 K/W), due to its enhanced SMF package construction and optimized internal leadframe. This enables 2.5× more efficient heat transfer from junction to PCB copper, allowing SL04-HE3_A18 to sustain full 1.1 A current with smaller thermal pads-critical for dense automotive and industrial PCB layouts where thermal relief area is constrained.
SL04-HE3_A18 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay
- Series:
- -
- Package/Case:
- DO-219AB
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Technology:
- Schottky
- Voltage - DC Reverse (Vr) (Max):
- 40 V
- Current - Average Rectified (Io):
- 1.1A
- Voltage - Forward (Vf) (Max) @ If:
- 540 mV @ 1.1 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- -
- Current - Reverse Leakage @ Vr:
- 20 µA @ 40 V
- Capacitance @ Vr, F:
- 65pF @ 4V, 1MHz
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-219AB (SMF)
- Operating Temperature - Junction:
- 175°C
SL04-HE3_A18 FAQ
1.How can I place an order for SL04-HE3_A18 through Aetrix?
Please submit a Request for Quotation (RFQ) for SL04-HE3_A18 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 SL04-HE3_A18 reliable?
The price and inventory of SL04-HE3_A18 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SL04-HE3_A18 is usually 5 days.
3.What payment methods are accepted for SL04-HE3_A18?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SL04-HE3_A18 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SL04-HE3_A18?
SL04-HE3_A18 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SL04-HE3_A18 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 SL04-HE3_A18?
For technical support, including SL04-HE3_A18 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SL04-HE3_A18 requirements.
6.How does Aetrix verify that SL04-HE3_A18 is sourced from the original manufacturer or authorized distributors?
All SL04-HE3_A18 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 SL04-HE3_A18 meets industry standards.
7.What is the process for return or replacement of SL04-HE3_A18?
All SL04-HE3_A18 units undergo pre-shipment inspection (PSI). If there is an issue with SL04-HE3_A18, 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 SL04-HE3_A18 part is unused and in its original packaging.
Return procedure for SL04-HE3_A18:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SL04-HE3_A18 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 …
