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Taiwan Semiconductor Corporation SS19HM2G
- Part No.:
- SS19HM2G
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
SS19HM2G.pdf
- Description:
- DIODE SCHOTTKY 90V 1A DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:5,464
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Product details
Overview
SS19HM2G from Taiwan Semiconductor is a 1A, 90V Schottky barrier surface-mount rectifier in DO-214AC (SMA) package, optimized for high-efficiency DC/DC conversion with low forward voltage (0.80 V at 1A, 25°C), high surge current capability (40 A), and junction temperature up to +150°C. It serves as a primary output rectifier in compact AC/DC adapters and switching power supplies.
For engineers reviewing the SS19HM2G datasheet, SS19HM2G pinout, SS19HM2G application, or SS19HM2G equivalent, key selection criteria include its 90 V repetitive peak reverse voltage, 0.80 V forward voltage at rated current, 100 μA reverse leakage at 25°C, thermal resistance (RθJA = 88 °C/W), and DO-214AC mechanical compatibility with automated SMT assembly.
Technical Context
The SS19HM2G implements a single-die Schottky junction structure with guard ring overvoltage protection and matte tin-plated leads compliant with J-STD-002 solderability. Its 10,000 V/μs critical rate of rise of off-state voltage supports fast-switching topologies without parasitic turn-on.
Rated for continuous operation from –55°C to +150°C junction temperature, it delivers stable performance under transient thermal loads (transient thermal impedance curve validated per Fig.12), with moisture sensitivity level 1 (J-STD-020) enabling standard reflow without dry-pack handling.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 90 V - Maximum non-repetitive reverse blocking voltage; defines safe operating range in flyback or buck output stages |
| IF | 1 A - Continuous average forward current; sets minimum heatsinking requirement in 5–24 V DC/DC outputs |
| VF @ 1A, 25°C | 0.80 V - Low conduction loss enabling >92% efficiency in 12 V/1 A adapter designs |
| IR @ VR, 25°C | 100 μA - Minimal leakage at rated reverse voltage; preserves standby power budget in energy-efficient SMPS |
| IFSM | 40 A - Peak surge rating for 8.3 ms half-sine; withstands inrush during cold-start or line transients |
| TJ max | +150°C - Extended thermal limit allows operation in enclosed, convection-limited enclosures without derating |
| RθJA | 88 °C/W - Thermal resistance from junction to ambient; determines required PCB copper area for natural convection cooling |
Pinout & Package
DO-214AC (SMA) surface-mount package with cathode indicated by molded band; 0.060 g mass; UL 94V-0 molding compound; lead-free, halogen-free, RoHS-compliant construction.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Input current entry point | Connected to transformer secondary or switch node; requires thermal relief pad for solder joint reliability |
| Cathode | Output current exit point | Marked by band; ties to output capacitor ground return; carries full load current and ripple |
Key Features
| Feature | Design Value |
|---|---|
| Guard ring structure | Prevents edge breakdown at 90 V reverse bias, improving long-term reliability in high-voltage margin designs |
| Moisture sensitivity level 1 | Eliminates baking requirement before reflow; compatible with standard J-STD-020 Class 1 handling |
| High dV/dt rating (10,000 V/μs) | Resists false triggering in high-frequency synchronous rectifier circuits with steep voltage transitions |
| Matte tin-plated leads | Ensures consistent wetting and void-free solder joints per J-STD-002, critical for high-volume SMT yield |
Applications
| AC/DC Adapters | Monitor Power Supplies |
|---|---|
Use Scenario: 12 V/1 A output stage in wall-mounted USB-C PD adapters with <15 mm height constraint. IC Role / Device Role / Timing Role: Output rectifier replacing conventional PN diodes to reduce conduction loss and thermal footprint. Use Value: 0.80 V forward drop cuts rectifier power loss by ~45% vs. 1.1 V Si diode, enabling smaller heatsink or no heatsink. | Use Scenario: Secondary-side rectification in 24 V/0.8 A auxiliary rail for LCD backlight control circuitry. IC Role / Device Role / Timing Role: Freewheeling path for PWM-driven boost converter feeding LED strings. Use Value: 40 A surge rating handles startup current spikes without degradation; 150°C TJ rating sustains operation near display heat sources. |
| TV Power Sections | Industrial DC/DC Converters |
Use Scenario: Standby 5 V/0.5 A output in smart TV mainboard power architecture. IC Role / Device Role / Timing Role: Low-leakage rectifier minimizing no-load input power consumption. Use Value: 100 μA reverse leakage at 25°C reduces standby loss below 5 mW-meeting ENERGY STAR Tier 2 requirements. | Use Scenario: Isolated 15 V/1 A auxiliary supply for gate drivers in motor control inverters. IC Role / Device Role / Timing Role: High-reliability rectifier in harsh-environment DC/DC modules exposed to vibration and thermal cycling. Use Value: DO-214AC mechanical robustness and JESD 201 Class 2 whisker resistance ensure >10-year field life without solder joint failure. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Schottky rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SS19HE3/57T | Same VRRM (90 V), identical DO-214AC package, but VF = 0.85 V at 1A/25°C (50 mV higher) | Slightly higher conduction loss; suitable where thermal margin exists but cost sensitivity is high | Select SS19HE3/57T only if BOM cost reduction outweighs 3–5 mW extra dissipation per unit |
| SB190-E3/57T | VRRM = 90 V, same IF = 1 A, but VF = 0.82 V and IR = 200 μA at 25°C (2× leakage) | Higher leakage may impact ultra-low-power standby designs; otherwise functionally interchangeable | Prefer SB190-E3/57T only in non-standby-critical industrial systems with ample thermal headroom |
Compared with SS19HE3/57T and SB190-E3/57T, the SS19HM2G offers the lowest forward voltage (0.80 V) and tightest reverse leakage (100 μA) in the 90 V/1 A SMA-class Schottky rectifier category-making it optimal for thermally constrained, energy-efficient adapter and monitor power designs.
Availability
SS19HM2G is available at Aetrix Electronics and suitable for AC/DC adapters, monitor power supplies, and industrial DC/DC converters requiring stable component supply, consistent parametric performance across production lots, and long-term lifecycle support.
Supply support for SS19HM2G 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 MOSFETs for industrial and consumer markets.
The SS19HM2G belongs to TSC's SS1x Schottky rectifier product line, engineered specifically for high-efficiency, space-constrained switching power supplies where low VF, robust surge handling, and JEDEC-standard packaging are mandatory.
FAQ
What is the maximum junction temperature rating for the SS19HM2G?
The SS19HM2G has a maximum junction temperature (TJ) rating of +150°C, verified per absolute maximum ratings table in the official TSC datasheet R2305. This extended rating enables reliable operation in thermally demanding environments such as enclosed power adapters or proximity to heat-generating ICs. The SS19HM2G maintains specified electrical parameters-including forward voltage and reverse leakage-up to this limit when derated per the forward current derating curve (Fig.1).
Does the SS19HM2G meet RoHS and halogen-free compliance requirements?
Yes, the SS19HM2G is RoHS compliant and halogen-free, as explicitly stated in the "Features" section of the TSC SS12–SS115 datasheet (Version R2305). It uses matte tin-plated leads and UL 94V-0 molding compound, satisfying both EU RoHS Directive 2011/65/EU and IEC 61249-2-21:2013 halogen-free standards. Full compliance documentation is available upon request from Aetrix Electronics.
What is the reverse leakage current specification for SS19HM2G at 100°C junction temperature?
At TJ = 100°C and rated reverse voltage (90 V), the SS19HM2G exhibits ≤2 mA reverse leakage current, per the "ELECTRICAL SPECIFICATIONS" table in the TSC datasheet R2305. This value is confirmed for the SS19 variant group (SS19/SS110/SS115) and reflects worst-case behavior under elevated thermal stress-critical for evaluating standby power in high-ambient-temperature applications.
Is the SS19HM2G pin-compatible with other DO-214AC Schottky rectifiers like SS14 or SB160?
No, the SS19HM2G is not pin-compatible with SS14 or SB160 in functional or electrical terms-though all share the DO-214AC (SMA) physical package. SS14 is rated for only 40 V VRRM, while SB160 has 60 V rating and different VF/IR characteristics. Mechanical fit does not imply electrical interchangeability; substituting SS19HM2G into an SS14-designated layout risks overvoltage failure. Always verify voltage, current, and thermal specs before replacement.
What is the typical forward voltage of SS19HM2G at 1 A and 100°C junction temperature?
The typical forward voltage of SS19HM2G at IF = 1 A and TJ = 100°C is 0.70 V, as published in the "ELECTRICAL SPECIFICATIONS" table (page 2, R2305). This value is 0.10 V lower than its 25°C counterpart (0.80 V), demonstrating favorable negative temperature coefficient behavior-beneficial for current sharing and thermal stability in parallel configurations.
SS19HM2G Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Series:
- -
- Package/Case:
- DO-214AC, SMA
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- Technology:
- Schottky
- Voltage - DC Reverse (Vr) (Max):
- 90 V
- Current - Average Rectified (Io):
- 1A
- Voltage - Forward (Vf) (Max) @ If:
- 800 mV @ 1 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- -
- Current - Reverse Leakage @ Vr:
- 100 µA @ 90 V
- Capacitance @ Vr, F:
- -
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AC (SMA)
- Operating Temperature - Junction:
- -55°C ~ 150°C
SS19HM2G FAQ
1.How can I place an order for SS19HM2G through Aetrix?
Please submit a Request for Quotation (RFQ) for SS19HM2G 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 SS19HM2G reliable?
The price and inventory of SS19HM2G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SS19HM2G is usually 5 days.
3.What payment methods are accepted for SS19HM2G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SS19HM2G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SS19HM2G?
SS19HM2G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SS19HM2G 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 SS19HM2G?
For technical support, including SS19HM2G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SS19HM2G requirements.
6.How does Aetrix verify that SS19HM2G is sourced from the original manufacturer or authorized distributors?
All SS19HM2G 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 SS19HM2G meets industry standards.
7.What is the process for return or replacement of SS19HM2G?
All SS19HM2G units undergo pre-shipment inspection (PSI). If there is an issue with SS19HM2G, 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 SS19HM2G part is unused and in its original packaging.
Return procedure for SS19HM2G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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