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Taiwan Semiconductor Corporation SS23H
- Part No.:
- SS23H
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SS23H.pdf
- Description:
- DIODE SCHOTTKY 30V 2A DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:6,603
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Product details
Overview
SS23H from Taiwan Semiconductor is a 2 A, 30 V Schottky barrier surface-mount rectifier in DO-214AA (SMB) package, designed for low-loss DC/DC conversion and reverse battery protection. It delivers VF = 0.50 V at IF = 2 A and TJ = 25°C, supports 50 A surge current, and operates up to TJ = 150°C with AEC-Q101 qualification.
For engineers reviewing the SS23H datasheet, SS23H pinout, SS23H application, or SS23H equivalent, key selection criteria include forward voltage at high temperature, reverse leakage at rated VRRM, thermal resistance (RθJL = 24°C/W), junction temperature rating, and automotive-grade reliability compliance.
Technical Context
The SS23H employs a single-die Schottky structure optimized for low forward voltage and fast switching, enabling high-efficiency operation in high-frequency power supplies. Its guard ring design enhances over-voltage robustness, while matte tin-plated leads ensure reliable solderability per J-STD-002.
Rated for repetitive peak reverse voltage of 30 V and RMS reverse voltage of 21 V, the device maintains IR ≤ 400 µA at TJ = 25°C and ≤ 10 mA at TJ = 100°C, supporting stable performance in automotive lighting and freewheeling applications across -55°C to +150°C ambient conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 30 V - Maximum non-repetitive reverse blocking voltage; defines safe operating limit in reverse-biased freewheeling or protection circuits |
| IF | 2 A - Continuous forward current rating; determines steady-state power handling without derating below 125°C ambient |
| VF @ 2 A, 25°C | 0.50 V - Low conduction loss enables >92% efficiency in 5–12 V DC/DC stages at full load |
| IFSM | 50 A - Peak surge capability supports motor startup or load dump transients without failure |
| RθJL | 24 °C/W - Enables direct thermal path to PCB copper; allows 1.2 W dissipation with ≤25°C rise from lead to junction |
| TJ max | 150 °C - Extended junction rating permits operation in under-hood automotive environments without forced cooling |
| IR @ 30 V, 25°C | ≤400 µA - Low leakage preserves battery standby life in reverse-polarity protection circuits |
Pinout & Package
DO-214AA (SMB) surface-mount package with cathode indicated by molded band; body dimensions 4.60 × 3.95 × 2.00 mm (L × W × H); weight ≈ 0.093 g; moisture sensitivity level 1 per J-STD-020.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry point | Connected to lower-potential side (e.g., ground or return path) in freewheeling or reverse protection configurations |
| Cathode | Forward current exit / reverse-blocking terminal | Marked by band; ties to positive rail in reverse-battery protection or anode of inductive load in flyback paths |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive electronics per stress test requirements including HTGB, TC, HTRB, and ESD - suitable for under-hood deployment |
| Guard ring structure | Improves edge termination robustness against transient overvoltage events, increasing dV/dt immunity to 10,000 V/µs |
| Low VF at 100°C | VF = 0.40 V @ IF = 2 A, TJ = 100°C - maintains conduction efficiency during sustained high-temperature operation |
| Halogen-free & RoHS compliant | Meets EU Directive 2011/65/EU and IEC 61249-2-21; supports green manufacturing and end-of-life recycling |
| J-STD-002 solderable leads | Matte tin plating ensures consistent wetting and void-free reflow joints on standard Pb-free assembly lines |
Applications
| Automotive Reverse Battery Protection | DC/DC Converter Output Rectification |
|---|---|
Use Scenario: Installed between vehicle battery and ECU input to block reverse polarity connection during service. IC Role / Device Role / Timing Role: Unidirectional current valve preventing damage to downstream SMPS and microcontrollers. Use Value: With VF = 0.50 V and IR ≤ 400 µA, minimizes standby drain while surviving 12 V system transients and load dumps. | Use Scenario: Used as secondary-side rectifier in 5 V/2 A buck converter for infotainment USB ports. IC Role / Device Role / Timing Role: High-frequency switching diode replacing slower PN rectifiers to reduce switching losses. Use Value: 0.50 V forward drop at 2 A improves full-load efficiency by ~3% versus 1N5822; SMB footprint enables compact layout. |
| Freewheeling Diode in Motor Drivers | LED Lighting Power Supply |
Use Scenario: Placed across brushed DC motor coil to clamp inductive kickback during PWM commutation. IC Role / Device Role / Timing Role: Fast recovery path for stored magnetic energy, limiting voltage spikes to ≤30 V. Use Value: 50 A IFSM withstands repeated 10 ms surges; 10,000 V/µs dV/dt rating prevents false turn-on during fast transients. | Use Scenario: Rectifying AC input in non-isolated LED driver for interior dome lights. IC Role / Device Role / Timing Role: Input-stage bridge leg component delivering low-loss 2 A continuous conduction. Use Value: RθJL = 24°C/W allows direct thermal coupling to metal-core PCB, sustaining 2 A at 85°C ambient without heatsink. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Schottky rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Vishay SS23HE3/5AT | Same DO-214AA package, VF = 0.52 V @ 2 A, 25°C; IR = 500 µA @ 30 V, 25°C | Slightly higher VF and leakage; identical thermal and surge ratings | Acceptable where <0.02 V VF increase is tolerable; same footprint and assembly process |
| ON Semiconductor SB230-E3/54 | DO-214AA, VRRM = 30 V, VF = 0.51 V @ 2 A, 25°C; IR = 300 µA @ 30 V, 25°C | Lower leakage but marginally higher VF; not AEC-Q101 qualified | Preferred for cost-sensitive industrial designs; avoid in automotive safety-critical systems |
Compared with SS23H, SS23HE3/5AT offers near-identical performance with minor VF/IR trade-offs, while SB230-E3/54 provides tighter leakage control but lacks automotive qualification - making SS23H the optimal choice when AEC-Q101 compliance and thermal stability at 150°C are mandatory.
Availability
SS23H is available at Aetrix Electronics and suitable for automotive reverse battery protection, DC/DC converter output rectification, freewheeling diode implementation, and LED lighting power supply applications requiring stable component supply and long-term lifecycle support.
Supply support for SS23H 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 Company (TSC) is a vertically integrated analog and discrete semiconductor manufacturer headquartered in Hsinchu, Taiwan, serving global automotive, industrial, and consumer markets since 1979.
The SS2xH series is part of TSC's AEC-Q101-qualified Schottky rectifier product line, engineered specifically for high-reliability 12 V automotive subsystems demanding low VF, high surge tolerance, and extended temperature operation.
FAQ
What is the maximum junction temperature rating for SS23H?
The SS23H has a maximum junction temperature (TJ max) of +150°C, verified per AEC-Q101 stress testing. This rating allows uninterrupted operation in under-hood automotive environments where ambient temperatures exceed 85°C. The device maintains electrical integrity up to this limit, with VF and IR values specified at TJ = 100°C and 125°C in the official datasheet. SS23H must be thermally anchored to PCB copper to sustain continuous 2 A current at elevated temperatures.
Is SS23H suitable for reverse battery protection in 12 V automotive systems?
Yes, SS23H is explicitly qualified for reverse battery protection in 12 V automotive systems. Its 30 V VRRM provides 2.5× margin over nominal 12 V, and its AEC-Q101 certification covers HTGB, temperature cycling, and load dump survivability. With IR ≤ 400 µA at 25°C and VF = 0.50 V at 2 A, SS23H minimizes quiescent current draw while ensuring robust clamping during polarity reversal events.
What is the forward voltage of SS23H at elevated temperature?
At IF = 2 A and TJ = 100°C, the SS23H exhibits a typical forward voltage (VF) of 0.40 V - lower than its 0.50 V value at 25°C due to the negative temperature coefficient of Schottky diodes. This behavior improves conduction efficiency during sustained high-temperature operation, such as in enclosed engine-control modules. The datasheet confirms this value under pulse-test conditions (PW = 0.3 ms).
Does SS23H have a guard ring structure, and what benefit does it provide?
Yes, SS23H incorporates a guard ring structure as stated in its official features list. This design enhances edge termination robustness, raising the critical rate of rise of off-state voltage (dV/dt) to 10,000 V/µs. In practice, this prevents premature avalanche breakdown during fast-switching transients - especially valuable in motor drive freewheeling paths and DC/DC converter synchronous rectification circuits where rapid voltage reversals occur.
What packaging and reel quantity is available for SS23H?
SS23H is supplied in DO-214AA (SMB) package on 3,000-piece tape-and-reel format, per the official ordering information. The reel complies with EIA-481 standards, and the device marking "SS23" is laser-etched on the cathode-end surface. Each reel includes moisture barrier bagging per MSL Level 1 (J-STD-020), eliminating bake requirements prior to SMT assembly.
SS23H Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Series:
- -
- Package/Case:
- DO-214AA, SMB
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Technology:
- Schottky
- Voltage - DC Reverse (Vr) (Max):
- 30 V
- Current - Average Rectified (Io):
- 2A
- Voltage - Forward (Vf) (Max) @ If:
- 500 mV @ 2 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- -
- Current - Reverse Leakage @ Vr:
- 400 µA @ 30 V
- Capacitance @ Vr, F:
- -
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AA (SMB)
- Operating Temperature - Junction:
- -55°C ~ 125°C
SS23H FAQ
1.How can I place an order for SS23H through Aetrix?
Please submit a Request for Quotation (RFQ) for SS23H 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 SS23H reliable?
The price and inventory of SS23H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SS23H is usually 5 days.
3.What payment methods are accepted for SS23H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SS23H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SS23H?
SS23H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SS23H 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 SS23H?
For technical support, including SS23H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SS23H requirements.
6.How does Aetrix verify that SS23H is sourced from the original manufacturer or authorized distributors?
All SS23H 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 SS23H meets industry standards.
7.What is the process for return or replacement of SS23H?
All SS23H units undergo pre-shipment inspection (PSI). If there is an issue with SS23H, 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 SS23H part is unused and in its original packaging.
Return procedure for SS23H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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