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Taiwan Semiconductor Corporation S2MAH
- Part No.:
- S2MAH
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
S2MAH.pdf
- Description:
- 1.5A, 1000V, STANDARD RECOVERY R
- Quantity:
- Payment:
- Shipping:
Inventory:15,000
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Product details
Overview
S2MAH from Taiwan Semiconductor is a surface-mount general-purpose silicon rectifier diode rated for 1000 V repetitive peak reverse voltage (VRRM), 1.5 A average forward current (IF), and 50 A non-repetitive surge current (IFSM), used in automotive DC-DC converters, snubber networks, and car lighting systems.
For engineers reviewing the S2MAH datasheet, S2MAH pinout, S2MAH application, or S2MAH equivalent, key selection criteria include its DO-214AC (SMA) package, AEC-Q101 qualification, 1.1 V max forward voltage at 1.5 A, 5 µA max reverse leakage at 25°C, and 1500 ns reverse recovery time - all critical for high-reliability automotive and industrial power conversion designs.
Technical Context
The S2MAH is a single-die, glass-passivated, standard recovery rectifier optimized for cost-sensitive, medium-voltage power conditioning. Its 1000 V VRRM rating enables use in 800 V bus systems with margin, while its 150°C maximum junction temperature supports operation in under-hood automotive environments.
Thermal performance is defined by 16°C/W junction-to-lead (RθJL) and 53°C/W junction-to-ambient (RθJA) resistance. The device exhibits 30 pF typical junction capacitance at 1 MHz and 4 V reverse bias, supporting stable switching behavior in snubber and flyback clamp applications.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 1000 V - supports isolation and safety margin in 800 V nominal DC bus systems |
| IF | 1.5 A continuous - suitable for low-to-medium power rectification in auxiliary supplies |
| IFSM | 50 A (8.3 ms half-sine) - withstands inrush and transient surges in automotive ignition and lighting |
| VF (max) | 1.1 V @ 1.5 A, 25°C - limits conduction loss and self-heating in thermally constrained layouts |
| IR (max) | 5 µA @ 1000 V, 25°C - ensures low standby leakage in high-impedance hold-up or sensing circuits |
| trr | 1500 ns - compatible with <100 kHz switching frequencies in line-frequency and low-speed SMPS |
| TJ max | 150°C - meets AEC-Q101 thermal requirements for under-hood automotive deployment |
Pinout & Package
Package: DO-214AC (SMA), surface-mount, molded plastic case with matte tin-plated leads; polarity indicated by cathode band; weight ≈ 0.060 g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry point | Connected to lower-potential side of AC source or transformer secondary |
| Cathode | Forward current exit point | Connected to positive rail or load; marked by visible band on package body |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing |
| Glass passivated junction | Enhances moisture resistance and long-term stability in humid or condensing environments |
| Low forward voltage drop | Reduces power dissipation and thermal stress in compact, unheatsinked PCB layouts |
| High surge current capability | Withstands repeated 50 A transients without degradation - critical for load dump immunity |
| Moisture sensitivity level 1 | Enables direct placement without baking; compatible with standard SMT reflow profiles |
Applications
| Automotive DC-DC Converter | Car LED Lighting Supply |
|---|---|
Use Scenario: Rectifying transformer secondary output in 12 V/48 V bidirectional DC-DC modules for ADAS power domains. IC Role / Device Role / Timing Role: Output rectifier in center-tapped or full-wave configuration. Use Value: 1000 V VRRM provides >2× margin over 48 V system transients; AEC-Q101 ensures functional safety compliance. | Use Scenario: Providing isolated, regulated power to high-brightness LED headlamp drivers. IC Role / Device Role / Timing Role: Secondary-side freewheeling and rectification element in flyback topology. Use Value: 1.1 V VF minimizes heat generation near optics; glass passivation prevents corrosion in sealed lamp housings. |
| Snubber Network | Industrial AC-DC Input Stage |
Use Scenario: Clamping voltage spikes across MOSFETs/IGBTs in motor drive inverters. IC Role / Device Role / Timing Role: Transient voltage suppression diode in RCD snubber circuit. Use Value: 1500 ns trr allows predictable energy absorption; 50 A IFSM handles repetitive switching surges. | Use Scenario: Bridge rectification in universal-input (85–265 VAC) industrial power supplies. IC Role / Device Role / Timing Role: Single-phase bridge leg component in discrete or hybrid rectifier assemblies. Use Value: 1000 V VRRM accommodates worst-case line peaks (375 VDC) with margin; DO-214AC enables automated assembly. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar rectifier diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STTH1L06S | 600 V VRRM, 1 A IF, 50 ns trr - faster but lower voltage rating | Not suitable for 800 V bus systems; limited to ≤400 V AC input stages | Select only when fast recovery and lower VF are prioritized over voltage margin |
| ON Semi MUR160 | 600 V VRRM, 1 A IF, ultrafast trr < 75 ns - higher cost, tighter tolerance | Designed for high-frequency SMPS; overqualified for line-frequency rectification | Prefer for noise-sensitive or high-switching-frequency designs where trr < 100 ns is required |
Compared with STTH1L06S and MUR160, the S2MAH offers superior voltage robustness (1000 V) and automotive qualification at lower cost, making it optimal for ruggedized 48 V/800 V auxiliary power and lighting - whereas alternatives trade voltage margin for speed or precision.
Availability
S2MAH is available at Aetrix Electronics and suitable for automotive DC-DC converters, car LED lighting systems, and industrial snubber networks requiring stable component supply across extended production lifecycles.
Supply support for S2MAH 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 devices, rectifiers, TVS diodes, and MOSFETs for industrial and automotive markets.
The S2MAH belongs to TSC's S2x series of AEC-Q101-qualified surface-mount rectifiers, engineered specifically for high-voltage, high-reliability power conversion in automotive subsystems and harsh-environment industrial controls.
FAQ
What is the maximum repetitive peak reverse voltage (VRRM) rating for the S2MAH?
The S2MAH has a VRRM rating of 1000 V, verified per Taiwan Semiconductor's A2102 datasheet. This rating defines the maximum instantaneous reverse voltage the device can block repeatedly without breakdown. It provides design margin for 800 V DC bus systems and transient overvoltage events in automotive and industrial applications. The S2MAH must not be operated beyond this limit under any condition.
Is the S2MAH qualified for automotive applications?
Yes, the S2MAH is AEC-Q101 qualified, as explicitly stated in the official Taiwan Semiconductor documentation. This qualification covers stress tests including temperature cycling, high-temperature reverse bias (HTRB), and electrostatic discharge (ESD). The S2MAH is approved for use in automotive subsystems such as DC-DC converters and LED lighting, where reliability under thermal and mechanical stress is mandatory.
What package type does the S2MAH use, and what are its key mechanical features?
The S2MAH uses the DO-214AC (SMA) surface-mount package. Key mechanical features include a UL 94V-0 compliant molding compound, matte tin-plated leads solderable per J-STD-002, polarity indicated by a cathode band, and a weight of approximately 0.060 g. Its dimensions and pad layout are standardized per JEDEC DO-214AC outlines, enabling compatibility with automated pick-and-place equipment.
What is the forward voltage drop (VF) specification for the S2MAH at rated current?
The S2MAH has a maximum forward voltage drop of 1.1 V at 1.5 A forward current and 25°C junction temperature, per the electrical specifications table in the A2102 datasheet. This value is measured under pulsed conditions (PW = 0.3 ms) to minimize self-heating. At higher temperatures or continuous DC, VF decreases slightly due to negative temperature coefficient, but thermal design must ensure TJ remains within −55°C to +150°C limits.
Does the S2MAH have a specified reverse recovery time (trr), and how is it measured?
Yes, the S2MAH has a typical reverse recovery time (trr) of 1500 ns, measured under the conditions IF = 0.5 A, IR = 1.0 A, and Irr = 0.25 A, as defined in the A2102 datasheet. This parameter reflects the time required for the diode to transition from conduction to blocking state. The test circuit and waveform are illustrated in Figure 6 of the datasheet, confirming its suitability for line-frequency and low-speed switching applications up to ~100 kHz.
S2MAH Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Series:
- -
- Package/Case:
- DO-214AC, SMA
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Technology:
- Standard
- Voltage - DC Reverse (Vr) (Max):
- 1000 V
- Current - Average Rectified (Io):
- 1.5A
- Voltage - Forward (Vf) (Max) @ If:
- 1.1 V @ 1.5 A
- Speed:
- Standard Recovery >500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- 1.5 µs
- Current - Reverse Leakage @ Vr:
- 5 µA @ 1000 V
- Capacitance @ Vr, F:
- 30pF @ 4V, 1MHz
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AC (SMA)
- Operating Temperature - Junction:
- -55°C ~ 150°C
S2MAH FAQ
1.How can I place an order for S2MAH through Aetrix?
Please submit a Request for Quotation (RFQ) for S2MAH 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 S2MAH reliable?
The price and inventory of S2MAH are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for S2MAH is usually 5 days.
3.What payment methods are accepted for S2MAH?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for S2MAH transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for S2MAH?
S2MAH orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your S2MAH 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 S2MAH?
For technical support, including S2MAH datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your S2MAH requirements.
6.How does Aetrix verify that S2MAH is sourced from the original manufacturer or authorized distributors?
All S2MAH 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 S2MAH meets industry standards.
7.What is the process for return or replacement of S2MAH?
All S2MAH units undergo pre-shipment inspection (PSI). If there is an issue with S2MAH, 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 S2MAH part is unused and in its original packaging.
Return procedure for S2MAH:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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