My Inquiry
My Account
Taiwan Semiconductor Corporation SS120H
- Part No.:
- SS120H
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
SS120H.pdf
- Description:
- 1A, 200V, SCHOTTKY RECTIFIER
- Quantity:
- Payment:
- Shipping:
Inventory:5,564
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
SS120H from Taiwan Semiconductor is a 1 A, 200 V Schottky barrier surface-mount rectifier in DO-214AC (SMA) package, featuring low forward voltage (0.82 V typ. at 1 A, 25°C), high surge current capability (40 A), and AEC-Q101 qualification for automotive use. It serves as a freewheeling or reverse-battery protection diode in DC/DC converters and car lighting systems.
For engineers reviewing the SS120H datasheet, SS120H pinout, SS120H application, or SS120H equivalent, key selection factors include its 200 V repetitive peak reverse voltage, 0.95 V max forward voltage at 1 A/25°C, junction-to-lead thermal resistance of 28 °C/W, AEC-Q101 qualification status, and DO-214AC mechanical compatibility with automated SMT placement.
Technical Context
The SS120H is a single-die Schottky rectifier optimized for low-loss operation in high-frequency switching applications. Its 10,000 V/µs critical dV/dt rating supports robust noise immunity in fast-switching topologies, while the guard ring structure enhances overvoltage ruggedness without compromising soft recovery behavior.
Thermally, it delivers 28 °C/W junction-to-lead resistance when mounted on a 5 mm × 5 mm copper pad, enabling reliable 1 A continuous conduction at up to +150°C junction temperature. The device's moisture sensitivity level 1 rating and matte tin-plated leads ensure compatibility with standard reflow profiles and J-STD-002 solderability requirements.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 200 V - Maximum repetitive reverse blocking voltage; defines safe operating range in reverse-biased conditions. |
| IF | 1 A - Continuous forward current rating; determines steady-state power handling in DC/DC output stages. |
| IFSM | 40 A - Non-repetitive surge current capacity; supports transient load dumps and inductive kickback events. |
| VF (max) | 0.95 V @ 1 A, 25°C - Upper bound of forward conduction loss; directly impacts system efficiency and thermal design. |
| RθJL | 28 °C/W - Junction-to-lead thermal resistance; enables accurate thermal modeling for PCB copper pad sizing. |
| TJ max | +150°C - Maximum allowable junction temperature; sets upper limit for ambient and power dissipation derating. |
| dV/dt | 10,000 V/µs - Minimum critical rate of rise of off-state voltage; ensures stable blocking during fast voltage transients. |
Pinout & Package
Package: DO-214AC (SMA), surface-mount plastic case with cathode band polarity indicator; weight ≈ 0.066 g; UL 94V-0 rated molding compound; matte tin-plated leads compliant with J-STD-002.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry point | Connected to lower-potential node (e.g., switch node in buck converter); requires thermal relief on PCB for soldering reliability. |
| Cathode | Forward current exit / reverse-blocking terminal | Marked by visible band; ties to higher-potential rail (e.g., output capacitor positive); critical for reverse-battery protection orientation. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing per stress test plan. |
| Guard ring structure | Enhances edge termination robustness against localized overvoltage breakdown without increasing VF or Qrr. |
| Moisture sensitivity level 1 | Eliminates need for dry-packaging or baking prior to reflow; compatible with standard SMT assembly lines. |
| Halogen-free & RoHS compliant | Meets EU Directive 2011/65/EU and JEDEC JS709E; supports environmentally regulated end equipment. |
Applications
| DC/DC Converter Output Rectification | Reverse Battery Protection |
|---|---|
Use Scenario: Used in secondary-side synchronous or asynchronous rectification of 12 V–48 V automotive DC/DC converters. IC Role / Device Role / Timing Role: Schottky rectifier providing low-VF unidirectional conduction path with minimal conduction loss. Use Value: 0.82 V typical VF at 1 A reduces power loss by ~30% vs. comparable Si PN diodes, lowering thermal load on compact PCB layouts. | Use Scenario: Placed in series with vehicle battery input to prevent damage from accidental reverse connection. IC Role / Device Role / Timing Role: Unidirectional current gate protecting downstream ECUs and lighting modules. Use Value: 200 V VRRM withstands load-dump transients up to ISO 7637-2 Pulse 5a; 40 A IFSM handles jump-start surges. |
| Car LED Lighting Supply | Freewheeling Diode in Motor Drivers |
Use Scenario: Input protection and flyback suppression in constant-current LED drivers for headlamps and DRLs. IC Role / Device Role / Timing Role: Reverse-polarity clamp and inductive energy recirculation path. Use Value: AEC-Q101 qualification ensures long-term reliability under automotive thermal cycling (-40°C to +125°C ambient). | Use Scenario: Freewheeling path across brushed DC motor windings in seat/mirror/window control modules. IC Role / Device Role / Timing Role: Energy recapture diode during PWM turn-off transitions. Use Value: 10,000 V/µs dV/dt rating prevents false triggering during rapid voltage reversal in inductive switching. |
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 | Lower VRRM (40 V), higher VF (0.9 V min), same DO-214AC package | Restricted to ≤40 V systems; unsuitable for 200 V reverse-battery or load-dump scenarios | Select only for low-voltage (<40 V) consumer or industrial DC/DC where cost is prioritized over voltage margin. |
| ON Semiconductor SB120 | Identical VRRM (200 V), IF (1 A), and DO-214AC package; VF slightly higher (0.92 V max @ 1 A) | Not AEC-Q101 qualified; lacks automotive stress-test validation and guard ring | Acceptable for non-automotive industrial or commercial applications where qualification is not mandated. |
Compared with VS-1N5819HM3/81 and SB120, the SS120H uniquely combines 200 V blocking, AEC-Q101 qualification, and guard ring protection-making it the only option among the three validated for automotive reverse-battery and load-dump environments.
Availability
SS120H is available at Aetrix Electronics and suitable for automotive lighting, DC/DC converter design, and reverse battery protection circuits requiring stable component supply and long-term lifecycle assurance.
Supply support for SS120H 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, serving global automotive, industrial, and computing markets since 1979.
The SS120H belongs to TSC's AEC-Q101-qualified Schottky rectifier product line, engineered specifically for high-reliability 12 V–48 V automotive subsystems demanding low VF, high dV/dt, and robust surge tolerance.
FAQ
What is the maximum junction temperature rating for the SS120H?
The SS120H has a maximum junction temperature (TJ max) of +150°C, verified per JEDEC standards. This rating allows continuous operation at full 1 A forward current in ambient temperatures up to +125°C when properly heatsinked on a 5 mm × 5 mm Cu pad. Derating curves in the SS120H datasheet confirm usable current down to -55°C storage temperature.
Is the SS120H suitable for reverse battery protection in automotive applications?
Yes, the SS120H is explicitly designed for reverse battery protection in automotive systems. Its 200 V VRRM rating exceeds ISO 7637-2 load-dump pulse requirements, and its AEC-Q101 qualification validates performance across temperature cycling, humidity, and mechanical shock. The cathode band marking ensures correct orientation during assembly of the SS120H into battery input paths.
Does the SS120H have a guard ring, and what function does it serve?
Yes, the SS120H incorporates a guard ring structure in its die design. This feature improves edge termination ruggedness to suppress premature avalanche breakdown under transient overvoltage conditions-such as load dump or inductive switching-without increasing forward voltage or reverse leakage. The guard ring is confirmed in TSC's SS120H mechanical and reliability documentation.
What is the forward voltage specification of the SS120H at elevated temperature?
The SS120H exhibits reduced forward voltage at high temperature: VF is 0.65 V (typical) and 0.85 V (maximum) at 1 A and TJ = 125°C. This negative temperature coefficient helps stabilize conduction losses during thermal transients and improves current sharing in parallel configurations. These values are measured per pulse test conditions (PW = 0.3 ms) as specified in the SS120H electrical characteristics table.
What packaging and reel quantity is offered for the SS120H?
The SS120H is supplied in DO-214AC (SMA) package on 7,500-unit tape-and-reel format, optimized for high-speed pick-and-place equipment. The reel complies with EIA-481 standards, and the device's moisture sensitivity level 1 rating means no baking is required before SMT reflow. Each SS120H unit is marked "SS120" on the cathode side per the ordering code specification.
SS120H 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):
- 200 V
- Current - Average Rectified (Io):
- 1A
- Voltage - Forward (Vf) (Max) @ If:
- 950 mV @ 1 A
- Speed:
- No Recovery Time > 500mA (Io)
- Reverse Recovery Time (trr):
- -
- Current - Reverse Leakage @ Vr:
- 100 µA @ 200 V
- Capacitance @ Vr, F:
- 31pF @ 4V, 1MHz
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AC (SMA)
- Operating Temperature - Junction:
- -55°C ~ 150°C
SS120H FAQ
1.How can I place an order for SS120H through Aetrix?
Please submit a Request for Quotation (RFQ) for SS120H 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 SS120H reliable?
The price and inventory of SS120H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SS120H is usually 5 days.
3.What payment methods are accepted for SS120H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SS120H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SS120H?
SS120H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SS120H 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 SS120H?
For technical support, including SS120H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SS120H requirements.
6.How does Aetrix verify that SS120H is sourced from the original manufacturer or authorized distributors?
All SS120H 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 SS120H meets industry standards.
7.What is the process for return or replacement of SS120H?
All SS120H units undergo pre-shipment inspection (PSI). If there is an issue with SS120H, 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 SS120H part is unused and in its original packaging.
Return procedure for SS120H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SS120H 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
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 …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
