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Taiwan Semiconductor Corporation SS14LSH
- Part No.:
- SS14LSH
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Diodes
- Package:
- SOD-123H
- Datasheet:
-
SS14LSH.pdf
- Description:
- 1A, 40V, SCHOTTKY RECTIFIER
- Quantity:
- Payment:
- Shipping:
Inventory:18,600
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Product details
Overview
SS14LSH from Taiwan Semiconductor is a 1A, 40V Schottky barrier surface-mount rectifier in SOD-123HE package, featuring 0.55V forward voltage at 1A/25°C, 30A peak surge current, and AEC-Q101 qualification for automotive-grade reliability. It serves as a low-loss freewheeling or reverse-battery protection diode in compact DC/DC converters.
For engineers reviewing the SS14LSH datasheet, SS14LSH pinout, SS14LSH application, or SS14LSH equivalent, key selection criteria include its 40V VRRM, 0.55V VF at full rated current, 62pF junction capacitance at 1MHz/4V, -55°C to +150°C operating junction temperature, and SOD-123HE mechanical compatibility with automated placement.
Technical Context
The SS14LSH implements a single-die Schottky junction optimized for low forward voltage and fast switching in low-voltage, high-frequency power conversion. Its 40V repetitive peak reverse voltage and 30A non-repetitive surge rating support robust transient handling in automotive and industrial DC/DC stages.
Thermally, it delivers RθJA = 70°C/W and RθJC = 25°C/W, enabling operation up to +150°C junction temperature. The SOD-123HE package features matte tin-plated leads, J-STD-002 solderability, and moisture sensitivity level 1 per J-STD-020.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 40 V - Maximum continuous reverse blocking voltage before breakdown |
| IF | 1 A - Continuous average forward current capability at TA = 25°C |
| VF | 0.55 V @ 1A, 25°C - Low conduction loss enabling >90% efficiency in 3.3–12V output converters |
| IFSM | 30 A - Peak surge current tolerance for 8.3ms half-sine, supporting inrush and fault transients |
| CJ | 62 pF @ 1MHz, 4V - Low junction capacitance minimizing switching losses and EMI in >100kHz topologies |
| TJ max | +150 °C - Extended thermal rating allowing use in under-hood automotive environments |
| Package | SOD-123HE - Ultra-low profile (<0.85mm height), JEDEC-compliant surface-mount outline |
Pinout & Package
SOD-123HE is a two-terminal surface-mount package with cathode indicated by a band on the body. Terminals are matte tin-plated, compliant with J-STD-002 solderability requirements and JESD201 Class 2 whisker resistance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry point | Connected to lower-potential node (e.g., switch node in buck converter); enables unidirectional conduction |
| Cathode | Forward current exit / reverse-blocking terminal | Marked by band; ties to higher-potential rail (e.g., output capacitor positive) for freewheeling path |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive applications including engine control, lighting, and infotainment systems |
| Low-profile SOD-123HE | Height <0.85mm enables ultra-thin PCB designs and compatibility with tight board spacing |
| High surge current (30A) | Withstands repeated load dump and hot-swap events without degradation |
| Halogen-free & RoHS compliant | Meets IEC 61249-2-21 and EU RoHS Directive 2011/65/EU for eco-conscious manufacturing |
| Moisture sensitivity level 1 | No baking required prior to reflow; supports standard SMT assembly without special handling |
Applications
| Automotive LED Lighting | USB-C Power Delivery DC/DC Stage |
|---|---|
Use Scenario: Reverse polarity protection and freewheeling in 12V/24V LED headlamp drivers. IC Role / Device Role / Timing Role: Schottky rectifier providing low-loss return path during MOSFET off-time and blocking reverse battery connection. Use Value: 0.55V VF minimizes heat generation in sealed lamp housings; AEC-Q101 ensures 15-year reliability under thermal cycling. | Use Scenario: Output rectification in 5–20V synchronous buck converters powering USB-C PD sink ports. IC Role / Device Role / Timing Role: Freewheeling diode replacing synchronous MOSFET in cost-sensitive or low-duty-cycle designs. Use Value: 62pF CJ reduces switching node ringing; SOD-123HE footprint allows layout symmetry with controller ICs. |
| Industrial Sensor Node Power Supply | Reverse Battery Protection in Telematics Units |
Use Scenario: Input rectification and hold-up in 3.3V/5V isolated DC/DC modules for battery-powered IoT sensors. IC Role / Device Role / Timing Role: Low-leakage (400µA @ 40V, 25°C) input protection diode preventing backfeed into primary side. Use Value: 0.55V VF preserves battery life over thousands of charge cycles; -55°C to +150°C range supports outdoor deployment. | Use Scenario: Polarity guard in 12V telematics control units exposed to field wiring errors. IC Role / Device Role / Timing Role: Series-connected Schottky blocking reverse current during accidental battery reversal. Use Value: 40V VRRM withstands ISO 7637-2 pulse 1/2a; 30A IFSM survives jump-start surges without fuse activation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Schottky rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ON Semiconductor NSS10100HT1G | Same SOD-123HE package; 1A/100V rating; VF = 0.55V @ 1A but higher leakage (500µA @ 100V) | Higher VRRM suits 48V systems; less suitable for 12V/24V where leakage dominates standby loss | Select when system requires >40V reverse margin and can tolerate slightly higher IR |
| Vishay VS-1EQH04HM3 | SOD-123 package (not HE variant); same 40V/1A rating; VF = 0.52V @ 1A; RθJA = 75°C/W | Standard SOD-123 has 1.0mm height vs. SOD-123HE's 0.85mm - may affect board clearance or thermal stack-up | Choose if legacy SOD-123 footprint is fixed and 0.05V VF reduction justifies 0.15mm height increase |
Compared with NSS10100HT1G and VS-1EQH04HM3, the SS14LSH offers optimal balance of ultra-low profile, AEC-Q101 qualification, and 400µA reverse leakage at 40V-making it preferred for space-constrained automotive lighting and battery-critical sensor nodes where thermal and reliability margins are tight.
Availability
SS14LSH is available at Aetrix Electronics and suitable for automotive LED lighting, USB-C power delivery DC/DC stages, and industrial sensor node power supplies requiring stable component supply across extended product lifecycles.
Supply support for SS14LSH 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
Taiwan Semiconductor Corporation (TSC) is a vertically integrated analog and discrete semiconductor manufacturer headquartered in Hsinchu, Taiwan, specializing in power devices, TVS diodes, and rectifiers for automotive and industrial markets.
The SS14LSH belongs to TSC's AEC-Q101-qualified LSH series of Schottky rectifiers, engineered specifically for high-efficiency, low-profile DC/DC conversion in thermally demanding automotive and portable electronics applications.
FAQ
What is the maximum junction temperature rating for SS14LSH?
The SS14LSH has a maximum junction temperature (TJ) rating of +150°C, verified per the manufacturer's absolute maximum ratings table. This allows reliable operation in under-hood automotive environments and enclosed industrial enclosures. The SS14LSH maintains specified electrical performance up to this limit when thermal design respects RθJA = 70°C/W and RθJC = 25°C/W values.
Is SS14LSH compatible with lead-free reflow soldering processes?
Yes, the SS14LSH uses matte tin-plated leads compliant with J-STD-002 for solderability and is rated for standard lead-free reflow profiles (peak temperature ≤260°C). Its moisture sensitivity level 1 per J-STD-020 means no pre-bake is required, simplifying SMT line integration. The SS14LSH has been validated for IPC-J-STD-020D Level 1 handling.
Does SS14LSH have automotive qualification?
Yes, the SS14LSH is explicitly AEC-Q101 qualified, as confirmed in the "Features" section of the official datasheet. This qualification covers stress testing for temperature cycling, humidity bias, mechanical shock, and high-temperature operating life-ensuring suitability for automotive powertrain, body electronics, and lighting applications. The SS14LSH carries full AEC-Q101 test report documentation.
What is the reverse leakage current of SS14LSH at 40V and 125°C?
At 40V reverse voltage and 125°C junction temperature, the SS14LSH exhibits a typical reverse leakage current (IR) of less than 1mA, as specified in the "ELECTRICAL SPECIFICATIONS" table under condition "TJ = 125°C". This value reflects worst-case behavior for thermal design margining; actual units typically measure significantly lower. The SS14LSH maintains this performance within its rated TJ range.
Can SS14LSH replace SS14 in existing designs?
The SS14LSH is not a direct replacement for legacy SS14 due to differences in packaging and qualification: SS14LSH uses SOD-123HE (0.85mm height, AEC-Q101), while standard SS14 typically uses DO-214AC or SOD-123 without automotive qualification. Pin compatibility exists only if both use SOD-123HE, but thermal and reliability specs differ. Verify layout, thermal relief, and qualification requirements before substituting SS14LSH for SS14.
SS14LSH Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Series:
- -
- Package/Case:
- SOD-123H
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Technology:
- Schottky
- Voltage - DC Reverse (Vr) (Max):
- 40 V
- Current - Average Rectified (Io):
- 1A
- Voltage - Forward (Vf) (Max) @ If:
- 550 mV @ 1 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- -
- Current - Reverse Leakage @ Vr:
- 400 µA @ 40 V
- Capacitance @ Vr, F:
- 80pF @ 4V, 1MHz
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOD-123HE
- Operating Temperature - Junction:
- -55°C ~ 150°C
SS14LSH FAQ
1.How can I place an order for SS14LSH through Aetrix?
Please submit a Request for Quotation (RFQ) for SS14LSH 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 SS14LSH reliable?
The price and inventory of SS14LSH are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SS14LSH is usually 5 days.
3.What payment methods are accepted for SS14LSH?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SS14LSH transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SS14LSH?
SS14LSH orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SS14LSH 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 SS14LSH?
For technical support, including SS14LSH datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SS14LSH requirements.
6.How does Aetrix verify that SS14LSH is sourced from the original manufacturer or authorized distributors?
All SS14LSH 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 SS14LSH meets industry standards.
7.What is the process for return or replacement of SS14LSH?
All SS14LSH units undergo pre-shipment inspection (PSI). If there is an issue with SS14LSH, 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 SS14LSH part is unused and in its original packaging.
Return procedure for SS14LSH:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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