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Home > Products > Discrete Semiconductor Products > Diodes > Rectifiers > Single Diodes

Taiwan Semiconductor Corporation SS115H

Name: SS115H
Brand: Taiwan Semiconductor Corporation
SKU: SS115H
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: SS115H

Manufacturer:: Taiwan Semiconductor Corporation

Category:: Single Diodes

Package:: DO-214AC, SMA

Datasheet:: SS115H.pdf

Description:: DIODE SCHOTTKY 150V 1A DO214AC

Quantity:: RFQ Add To RFQ list

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Inventory:2,574

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Product details

Overview

SS115H from Taiwan Semiconductor is a 150 V, 1 A surface-mount Schottky barrier rectifier in DO-214AC (SMA) package, featuring 0.95 V forward voltage at 1 A and 100 µA reverse leakage at 25°C, optimized for reverse battery protection and DC/DC converter freewheeling in automotive lighting systems.

For engineers reviewing the SS115H datasheet, SS115H pinout, SS115H application, or SS115H equivalent, key selection criteria include its 150 V repetitive peak reverse voltage, AEC-Q101 qualification, 40 A surge rating, 125–150°C junction temperature range, and DO-214AC mechanical compatibility with automated SMT placement.

Technical Context

The SS115H implements a single-die Schottky junction structure with guard ring overvoltage protection, enabling high dV/dt immunity (10,000 V/µs) and stable operation up to 150°C junction temperature. Its low VF and low IR balance conduction loss and leakage in high-frequency switching topologies.

Thermally, it delivers R_θJL = 28°C/W and R_θJA = 88°C/W, supporting 1 A continuous current under standard PCB layout conditions. The device is moisture-sensitive level 1 (J-STD-020) and halogen-free, meeting automotive reliability requirements without derating at ambient temperatures ≤85°C.

Key Specifications

Parameter	Value and Actual Design Meaning
V_RRM	150 V - supports input rails up to 120 V DC with safety margin for transients in automotive and industrial power supplies
I_F	1 A continuous - sustains full-rated output current in compact DC/DC buck converters and LED drivers
V_F @ 1 A, 25°C	0.95 V - reduces conduction loss by ~15% vs. comparable 100 V Schottkys, improving efficiency in 12–48 V systems
I_R @ V_R, 25°C	100 µA - enables low standby power in reverse-battery protection circuits without significant quiescent drain
I_FSM	40 A - withstands cold-crank surges and load-dump transients in 12 V automotive subsystems
T_J max	150°C - allows operation in engine-bay-adjacent locations without thermal derating penalties
Package	DO-214AC (SMA) - industry-standard footprint compatible with JEDEC-compliant reflow profiles and pick-and-place tooling

Pinout & Package

DO-214AC (SMA) surface-mount package with molded plastic body (UL 94V-0), matte tin-plated leads, cathode indicated by band. Weight: 0.060 g.

Pin/Terminal	Circuit Role	Design Meaning
Anode	Current entry point under forward bias	Connected to lower-potential node (e.g., ground or switch-node return) in freewheeling or reverse-protection paths
Cathode	Current exit point under forward bias; polarity indicator via band	Connected to higher-potential rail (e.g., battery + or DC bus) - reverse connection blocks current flow

Key Features

Feature	Design Value
AEC-Q101 qualified	Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD per JESD22 standards
Guard ring structure	Prevents edge breakdown at high dV/dt, maintaining stable V_RRM performance during fast-switching transients
Low VF at high T_J	0.85 V @ 1 A, 100°C - minimizes thermal runaway risk in thermally constrained enclosures
Moisture sensitivity level 1	No bake requirement before reflow - simplifies manufacturing and eliminates yield loss from moisture-related popcorning
Halogen-free & RoHS compliant	Meets EU Directive 2011/65/EU and IPC-1752A reporting requirements for green electronics compliance

Applications

Reverse Battery Protection	DC/DC Converter Freewheeling
Use Scenario: Prevents damage to vehicle ECUs when battery terminals are accidentally reversed during jump-start or service. IC Role / Device Role / Timing Role: Unidirectional blocking diode placed in series with main power input rail. Use Value: Withstands 150 V reverse standoff and 40 A surge while adding only 0.95 V drop at 1 A, minimizing voltage loss in 12 V systems.	Use Scenario: Provides low-loss current path during MOSFET off-time in synchronous buck converters powering infotainment or ADAS modules. IC Role / Device Role / Timing Role: Passive freewheeling diode in non-synchronous topology or catch diode in pseudo-synchronous designs. Use Value: 0.95 V forward drop at 1 A reduces power dissipation by >200 mW vs. silicon diodes, lowering thermal load on PCB.
Automotive LED Lighting	Low-Voltage Inverter Output Stage
Use Scenario: Protects LED driver ICs from reverse polarity in headlamp or DRL modules exposed to field wiring errors. IC Role / Device Role / Timing Role: Input polarity guard in constant-current LED driver front-end. Use Value: 100 µA leakage at 25°C ensures negligible standby current draw, preserving battery life during vehicle sleep mode.	Use Scenario: Rectifies high-frequency AC output from half-bridge inverters driving small BLDC fans or solenoids in HVAC actuators. IC Role / Device Role / Timing Role: Output rectifier in 20–100 kHz inverter stage. Use Value: 10,000 V/µs dV/dt rating prevents false turn-on during fast voltage transitions, ensuring clean commutation.

Reverse Battery Protection

DC/DC Converter Freewheeling

Use Scenario: Prevents damage to vehicle ECUs when battery terminals are accidentally reversed during jump-start or service.

IC Role / Device Role / Timing Role: Unidirectional blocking diode placed in series with main power input rail.

Use Value: Withstands 150 V reverse standoff and 40 A surge while adding only 0.95 V drop at 1 A, minimizing voltage loss in 12 V systems.

Use Scenario: Provides low-loss current path during MOSFET off-time in synchronous buck converters powering infotainment or ADAS modules.

IC Role / Device Role / Timing Role: Passive freewheeling diode in non-synchronous topology or catch diode in pseudo-synchronous designs.

Use Value: 0.95 V forward drop at 1 A reduces power dissipation by >200 mW vs. silicon diodes, lowering thermal load on PCB.

Automotive LED Lighting

Low-Voltage Inverter Output Stage

Use Scenario: Protects LED driver ICs from reverse polarity in headlamp or DRL modules exposed to field wiring errors.

IC Role / Device Role / Timing Role: Input polarity guard in constant-current LED driver front-end.

Use Value: 100 µA leakage at 25°C ensures negligible standby current draw, preserving battery life during vehicle sleep mode.

Use Scenario: Rectifies high-frequency AC output from half-bridge inverters driving small BLDC fans or solenoids in HVAC actuators.

IC Role / Device Role / Timing Role: Output rectifier in 20–100 kHz inverter stage.

Use Value: 10,000 V/µs dV/dt rating prevents false turn-on during fast voltage transitions, ensuring clean commutation.

Equivalent & Alternatives

The following parts are listed as comparable options for similar Schottky rectifier applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
Vishay VS-1N5819HM3/81	40 V V_RRM, 1 A, VF = 0.475 V @ 1 A - lower voltage rating, lower VF	Not suitable for 120 V transient-tolerant automotive inputs; limited to ≤40 V systems	Select only for cost-sensitive 5–24 V consumer DC/DC where 150 V standoff is unnecessary
ON Semiconductor SB1150	150 V V_RRM, 1 A, VF = 0.92 V @ 1 A, AEC-Q101 qualified - nearly identical specs, same DO-214AC package	Direct functional match with minor VF improvement; validated in same automotive test suites	Drop-in alternative if SS115H lead time exceeds 12 weeks; verify marking and reel orientation per OEM procurement spec

Compared with VS-1N5819HM3/81 and SB1150, the SS115H provides the highest V_RRM/VF trade-off among AEC-Q101 Schottkys in DO-214AC, making it optimal for 12 V/24 V automotive systems requiring both surge robustness and low conduction loss.

Availability

SS115H is available at Aetrix Electronics and suitable for automotive lighting, reverse battery protection, and DC/DC converter freewheeling applications requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for SS115H 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 rectifiers, TVS devices, and automotive-qualified components since 1979.

The SS115H belongs to TSC's AEC-Q101-qualified SSxH Schottky rectifier family, engineered specifically for high-reliability 12 V/24 V automotive subsystems where low VF, high surge tolerance, and thermal stability are critical.

FAQ

What is the maximum junction temperature rating for the SS115H?

The SS115H has a maximum junction temperature (T_J) rating of +150°C, verified per AEC-Q101 stress testing. This allows uninterrupted operation in under-hood environments where ambient temperatures reach 105°C, provided thermal design maintains junction temperature below 150°C. The SS115H datasheet specifies derating curves confirming 1 A continuous current capability up to 125°C ambient with standard copper pour.

Is the SS115H suitable for reverse battery protection in 24 V commercial vehicles?

Yes, the SS115H is suitable for reverse battery protection in 24 V commercial vehicles. Its 150 V V_RRM provides sufficient margin against ISO 7637-2 pulse 5a (120 V) and pulse 5b (−150 V) transients. Combined with 40 A I_FSM and AEC-Q101 qualification, the SS115H meets heavy-duty truck ECU input protection requirements without external clamping circuitry.

Does the SS115H have a specified forward voltage at elevated temperature?

Yes, the SS115H specifies forward voltage at elevated temperature: 0.85 V typical at 1 A and 100°C junction temperature. This value is measured under pulsed conditions (PW = 0.3 ms) and reflects reduced series resistance at higher T_J, enabling stable performance in thermally demanding applications like engine control modules where heatsinking is limited.

What packaging format is available for the SS115H?

The SS115H is supplied in 7,500-piece tape-and-reel format per JEDEC standard for DO-214AC (SMA) packages. Reel dimensions comply with EIA-481-D, and the device is moisture sensitivity level 1 (MSL-1), eliminating bake requirements prior to SMT assembly. Each reel includes traceable lot coding per TSC's quality documentation system.

How does the SS115H compare to the SS110H in terms of reverse leakage current?

The SS115H exhibits 100 µA maximum reverse leakage (I_R) at 25°C and rated V_R, identical to the SS110H. However, at 125°C, the SS115H specifies ≤2 mA versus ≤1.5 mA for the SS110H - reflecting higher intrinsic leakage due to its wider bandgap engineering for 150 V operation. Both remain within acceptable limits for automotive standby power budgets.

SS115H Specifications

Product attributes: Attribute value

Manufacturer:: Taiwan Semiconductor Corporation

Series:: -

Package/Case:: DO-214AC, SMA

Packaging:: Tape & Reel (TR)

Product Status:: Active

Technology:: Schottky

Voltage - DC Reverse (Vr) (Max):: 150 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 @ 150 V

Capacitance @ Vr, F:: -

Grade:: Automotive

Qualification:: AEC-Q101

Mounting Type:: Surface Mount

Supplier Device Package:: DO-214AC (SMA)

Operating Temperature - Junction:: -55°C ~ 125°C

SS115H FAQ

1.How can I place an order for SS115H through Aetrix?

Please submit a Request for Quotation (RFQ) for SS115H 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 SS115H reliable?

The price and inventory of SS115H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SS115H is usually 5 days.

3.What payment methods are accepted for SS115H?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SS115H transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for SS115H?

SS115H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your SS115H 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 SS115H?

For technical support, including SS115H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SS115H requirements.

6.How does Aetrix verify that SS115H is sourced from the original manufacturer or authorized distributors?

All SS115H 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 SS115H meets industry standards.

7.What is the process for return or replacement of SS115H?

All SS115H units undergo pre-shipment inspection (PSI). If there is an issue with SS115H, 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 SS115H part is unused and in its original packaging.

Return procedure for SS115H:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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