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Taiwan Semiconductor Corporation SS23MH
- Part No.:
- SS23MH
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Diodes
- Package:
- 2-SMD, Flat Leads
- Datasheet:
-
SS23MH.pdf
- Description:
- DIODE SCHOTTKY 30V 2A MICRO SMA
- Quantity:
- Payment:
- Shipping:
Inventory:25,295
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Product details
Overview
SS23MH from Taiwan Semiconductor is a 2 A, 30 V Schottky barrier surface-mount rectifier in Micro SMA package, featuring low forward voltage (0.60 V max at 2 A, 25°C), 25 A surge rating, and AEC-Q101 qualification for automotive use - deployed as freewheeling diode in DC/DC converters and reverse battery protection circuits.
For engineers reviewing the SS23MH datasheet, SS23MH pinout, SS23MH application, or SS23MH equivalent, key selection criteria include repetitive peak reverse voltage (30 V), junction-to-lead thermal resistance (15 °C/W), moisture sensitivity level (MSL 1), and compatibility with automated SMT placement on space-constrained PCBs.
Technical Context
The SS23MH operates as a single-die Schottky rectifier optimized for low-loss, high-frequency switching in automotive and industrial power conversion. Its 30 V VRRM, 2 A continuous forward current, and 150 °C maximum junction temperature support operation under transient load and thermal stress.
Thermal performance is defined by RθJL = 15 °C/W and RθJA = 105 °C/W, enabling efficient heat transfer to the PCB via the lead frame. The device exhibits 35 pF junction capacitance at 4 V reverse bias and 150 µA max reverse leakage at 25°C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 30 V - Maximum repetitive reverse voltage before breakdown; sets upper limit for DC/DC converter output rail protection. |
| IF | 2 A - Continuous forward current rating; defines steady-state power handling in freewheeling paths. |
| IFSM | 25 A - Non-repetitive surge current (8.3 ms half-sine); supports inrush and fault-current tolerance. |
| VF (max) | 0.60 V @ 2 A, 25°C - Low conduction loss improves efficiency in low-voltage, high-current applications. |
| RθJL | 15 °C/W - Junction-to-lead thermal resistance; enables direct thermal path to PCB copper for compact thermal design. |
| CJ | 35 pF @ 1 MHz, 4 V - Low junction capacitance minimizes switching losses and EMI in high-frequency converters. |
| TJ max | 150 °C - Maximum operating junction temperature; supports under-hood automotive environments. |
Pinout & Package
Package: Micro SMA - Surface-mount plastic case (UL 94V-0), 0.68 mm typical height, matte tin-plated leads, polarity indicated by cathode band.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry point | Connected to input/source side of rectification path; requires low-impedance trace for thermal and current handling. |
| Cathode | Forward current exit / reverse voltage blocking terminal | Marked by band; connects to load/ground; must maintain clearance from adjacent high-voltage nodes per 30 V rating. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing - suitable for under-hood ECUs and lighting modules. |
| MSL Level 1 | No floor life limitation; compatible with standard reflow without baking - reduces manufacturing overhead in high-volume SMT lines. |
| 0.68 mm profile | Enables ultra-thin PCB designs in space-constrained modules such as LED drivers and sensor hubs. |
| Halogen-free & RoHS compliant | Meets IEC 61249-2-21 and EU RoHS directives - supports environmental compliance for global OEM supply chains. |
| Low RθJL (15 °C/W) | Facilitates direct thermal coupling to PCB copper pour, reducing need for thermal vias or heatsinks in 2 A applications. |
Applications
| DC/DC Converter Freewheeling Diode | Reverse Battery Protection |
|---|---|
Use Scenario: Used in synchronous and asynchronous buck converters powering infotainment systems and ADAS sensors. IC Role / Device Role / Timing Role: Freewheeling diode providing low-loss current path during high-side switch off-time. Use Value: 0.60 V max VF reduces conduction loss vs. silicon diodes, improving efficiency by ~2–3% at 2 A loads. | 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 blocking reverse polarity while passing normal forward current. Use Value: 30 V VRRM accommodates 24 V system transients; AEC-Q101 ensures survivability across automotive temperature range. |
| Automotive LED Lighting | Low-Voltage Inverter Output Stage |
Use Scenario: Drives high-brightness LED arrays in headlamps and DRLs with PWM dimming. IC Role / Device Role / Timing Role: Output rectifier in boost or buck-boost LED driver stages. Use Value: 35 pF CJ limits switching noise; MSL 1 enables direct placement without moisture bake. | Use Scenario: Rectifies high-frequency AC output from resonant inverters in HVAC blowers and seat motor drives. IC Role / Device Role / Timing Role: High-speed output rectifier handling >100 kHz switching frequencies. Use Value: Low VF and fast recovery minimize heating in compact inverter modules with limited airflow. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Schottky rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SS33HE (ON Semiconductor) | 3 A rating, 30 V VRRM, SMA package, higher IF but larger footprint (1.5 mm height) | Higher current margin; less suitable for ultra-low-profile layouts | Select when 3 A continuous current is required and board height allows ≥1.5 mm |
| SB230-E3/52 (Vishay) | 2 A, 30 V, DO-214AA package, 1.7 mm height, RθJA = 70 °C/W | Lower thermal resistance to ambient but taller; not MSL 1 | Prefer for non-automotive industrial use where moisture sensitivity is not critical |
Compared with SS23MH, SS33HE offers +0.5 A current headroom at the cost of 0.82 mm greater height, while SB230-E3/52 trades MSL 1 compliance and low profile for better ambient thermal dissipation - making SS23MH optimal for AEC-Q101-compliant, space-constrained automotive power stages.
Availability
SS23MH is available at Aetrix Electronics and suitable for automotive lighting, DC/DC converter freewheeling, and reverse battery protection requiring stable component supply, AEC-Q101 validation, and MSL 1 manufacturability.
Supply support for SS23MH 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 automotive, industrial, and consumer markets since 1979.
The SS23MH belongs to TSC's AEC-Q101-qualified Schottky rectifier family designed specifically for high-efficiency, low-profile power conversion in automotive electronics - emphasizing thermal robustness, reliability under vibration/temperature cycling, and SMT process compatibility.
FAQ
What is the maximum repetitive peak reverse voltage rating for SS23MH?
The SS23MH has a maximum repetitive peak reverse voltage (VRRM) of 30 V, as specified in the absolute maximum ratings table of the official Taiwan Semiconductor datasheet (Version A2103). This rating defines the highest reverse voltage the device can block continuously without breakdown and is validated across the full operating temperature range (−55°C to +150°C). Exceeding 30 V risks irreversible avalanche failure.
Is SS23MH suitable for automotive applications requiring AEC-Q101 qualification?
Yes, SS23MH is explicitly AEC-Q101 qualified per the manufacturer's documentation. It undergoes stress testing including high-temperature reverse bias (HTRB), temperature cycling, and mechanical shock to meet automotive reliability standards. This makes SS23MH appropriate for under-hood and cabin applications such as LED lighting drivers, body control modules, and infotainment power supplies.
What is the forward voltage drop of SS23MH at rated current and temperature?
The SS23MH exhibits a maximum forward voltage (VF) of 0.60 V at 2 A and 25°C, and 0.55 V at 2 A and 125°C, per electrical specifications. These values reflect low conduction loss essential for high-efficiency power conversion. The decrease in VF with rising temperature is characteristic of Schottky diodes and confirms stable performance across automotive thermal ranges.
Does SS23MH have moisture sensitivity level (MSL) certification, and what does it mean for assembly?
SS23MH is rated MSL Level 1 per J-STD-020, meaning it has unlimited floor life and requires no dry-pack or baking prior to reflow soldering. This simplifies SMT line integration, eliminates moisture-related popcorning risk, and supports just-in-time manufacturing - especially valuable for high-volume automotive electronics production where process consistency is critical.
What package type and marking code identify SS23MH on the device body?
SS23MH uses the Micro SMA package and is marked with the code "E" on the cathode band, as confirmed in the absolute maximum ratings table. The Micro SMA outline matches JEDEC DO-219AB, with 0.68 mm typical height and matte tin-plated leads. This marking distinguishes it from SS22MH (code "D") and SS24MH (code "F") in the same family.
SS23MH Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Series:
- -
- Package/Case:
- 2-SMD, Flat Leads
- 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:
- 600 mV @ 2 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- -
- Current - Reverse Leakage @ Vr:
- 150 µA @ 30 V
- Capacitance @ Vr, F:
- 35pF @ 4V, 1MHz
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- Micro SMA
- Operating Temperature - Junction:
- -55°C ~ 150°C
SS23MH FAQ
1.How can I place an order for SS23MH through Aetrix?
Please submit a Request for Quotation (RFQ) for SS23MH 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 SS23MH reliable?
The price and inventory of SS23MH are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SS23MH is usually 5 days.
3.What payment methods are accepted for SS23MH?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SS23MH transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SS23MH?
SS23MH orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SS23MH 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 SS23MH?
For technical support, including SS23MH datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SS23MH requirements.
6.How does Aetrix verify that SS23MH is sourced from the original manufacturer or authorized distributors?
All SS23MH 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 SS23MH meets industry standards.
7.What is the process for return or replacement of SS23MH?
All SS23MH units undergo pre-shipment inspection (PSI). If there is an issue with SS23MH, 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 SS23MH part is unused and in its original packaging.
Return procedure for SS23MH:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SS23MH Tags
-
1N4448X-TP
Micro Commercial Co
-
1N4148WX-TP
Micro Commercial Co
-
1N4148TR
onsemi
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MMSD4148T1G
onsemi
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MMBD914LT3G
onsemi
-
BAS16HT1G
onsemi
-
1N914BWT
onsemi
-
BAS21LT1G
onsemi
-
LL4148
onsemi
-
BAS16LT1G
onsemi
-
MMSD914T1G
onsemi
-
BAV21W-7-F
Diodes Incorporated
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