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Taiwan Semiconductor Corporation S3MH
- Part No.:
- S3MH
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
S3MH.pdf
- Description:
- DIODE GEN PURP 1KV 3A DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:3,000
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Product details
Overview
S3MH from Taiwan Semiconductor is a 1000 V repetitive peak reverse voltage, 3 A average forward current surface-mount silicon rectifier in DO-214AB (SMC) package, featuring 100 A surge capability and 1.15 V max forward voltage at 3 A - used in automotive DC-DC converters and snubber circuits.
For engineers reviewing the S3MH datasheet, S3MH pinout, S3MH application, or S3MH equivalent, key selection criteria include VRRM = 1000 V, IFSM = 100 A (8.3 ms), TJ(max) = 150 °C, RθJL = 13 °C/W, and AEC-Q101 qualification for under-hood reliability.
Technical Context
The S3MH is a single-die, glass-passivated, standard recovery rectifier with trr = 1500 ns at IF = 0.5 A / IR = 1.0 A / Irr = 0.25 A and CJ = 60 pF at 1 MHz / VR = 4.0 V. Its thermal design supports high-power density mounting via low RθJL (13 °C/W).
Rated for operation from –55 °C to +150 °C junction temperature, it delivers stable reverse leakage ≤10 µA at 25 °C and ≤250 µA at 125 °C under rated VRRM, meeting J-STD-020 Level 1 moisture sensitivity and JESD201 Class 2 whisker resistance.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 1000 V - maximum non-repetitive reverse blocking voltage; defines safe operating range in high-voltage DC-DC stages |
| IF(AV) | 3 A - continuous forward current rating at TC = 75 °C; determines heatsink sizing in power supply designs |
| IFSM | 100 A (8.3 ms) - surge withstand capability; enables robustness against line transients and inrush events |
| VF(max) | 1.15 V @ 3 A, 25 °C - forward conduction loss directly impacts efficiency and thermal rise in rectification paths |
| RθJL | 13 °C/W - junction-to-lead thermal resistance; enables direct PCB copper pour cooling without external heatsink |
| trr | 1500 ns - reverse recovery time; influences switching losses and EMI in hard-switched topologies |
| AEC-Q101 | Qualified - validated for automotive-grade reliability including temperature cycling, HTRB, and UHAST |
Pinout & Package
DO-214AB (SMC) surface-mount package with cathode-indicated band; matte tin-plated leads compliant with J-STD-002 solderability and JESD201 Class 2 whisker resistance. Weight ≈ 0.210 g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry node | Connected to lower-potential side of AC input or transformer secondary; requires adequate copper area for 3 A conduction |
| Cathode | Forward current exit node | Marked by molded band; ties to output rail or filter capacitor; carries full load current and must minimize trace inductance |
Key Features
| Feature | Design Value |
|---|---|
| Glass passivated junction | Enables stable long-term reverse leakage performance and humidity resistance in automotive under-hood environments |
| AEC-Q101 qualification | Validates reliability across temperature cycling, high-temp reverse bias, and mechanical shock per automotive electronics standards |
| Low RθJL (13 °C/W) | Allows efficient heat transfer from die to PCB copper, reducing need for supplemental heatsinking in space-constrained modules |
| J-STD-020 Level 1 moisture sensitivity | Permits unlimited floor life and standard reflow without baking, simplifying SMT assembly logistics |
| Halogen-free & RoHS compliant | Meets IEC 61249-2-21 and EU RoHS directives for environmentally regulated end equipment |
Applications
| Automotive DC-DC Converters | Car Lighting Systems |
|---|---|
Use Scenario: High-efficiency 12 V–48 V bidirectional DC-DC conversion in 48 V mild-hybrid architectures. IC Role / Device Role / Timing Role: Primary output rectifier handling 3 A continuous current at up to 1000 V reverse stress during transient overvoltage events. Use Value: AEC-Q101 qualification and 150 °C TJ(max) ensure uninterrupted operation in engine bay ambient temperatures exceeding 105 °C. | Use Scenario: LED driver front-end rectification in adaptive headlamp modules with PWM dimming and CAN diagnostics. IC Role / Device Role / Timing Role: Input-stage AC/DC rectifier converting alternator-derived AC to stable DC bus before buck regulation. Use Value: 100 A surge rating absorbs load-dump spikes up to ISO 7637-2 Pulse 5a, preventing catastrophic failure during battery disconnection events. |
| Snubber Networks | Industrial Power Supplies |
Use Scenario: RC/RCD snubber clamp in flyback and forward converter primary-side switching nodes. IC Role / Device Role / Timing Role: Fast-recovery rectifier absorbing turn-off energy from MOSFETs/IGBTs during voltage overshoot. Use Value: trr = 1500 ns balances switching loss and voltage overshoot suppression - faster than general-purpose but slower than ultrafast types, optimizing trade-off for cost-sensitive snubbers. | Use Scenario: Output rectification in telecom and server PSUs requiring >1000 V isolation and 3 A sustained output. IC Role / Device Role / Timing Role: Secondary-side freewheeling diode in center-tapped or full-wave configurations delivering regulated 12 V/24 V/48 V rails. Use Value: VF(max) = 1.15 V minimizes conduction loss at full load, improving overall efficiency while maintaining compatibility with legacy SMC footprint layouts. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-voltage rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Vishay VS-3EWH10 | VRRM = 1000 V, IF = 3 A, trr = 2000 ns, RθJL = 15 °C/W, AEC-Q101 qualified | Higher trr increases switching loss in high-frequency snubbers; slightly higher thermal resistance reduces power density margin | Preferred where longer trr improves voltage ringing damping in resonant snubbers |
| ON Semiconductor MUR3100CT | VRRM = 1000 V, IF = 3 A per diode, dual common-cathode configuration, trr = 75 ns, TO-220AC package | Dual-diode topology and through-hole package require PCB redesign; ultrafast recovery suits high-frequency SMPS but raises EMI risk | Selected when ultrafast recovery is mandatory and layout change is acceptable |
Compared with VS-3EWH10 and MUR3100CT, the S3MH offers optimal balance of surge robustness (100 A), thermal performance (13 °C/W), and automotive qualification in a compact SMC footprint - making it ideal for space-constrained, high-reliability 1000 V rectification without layout revision.
Availability
S3MH is available at Aetrix Electronics and suitable for automotive DC-DC converters, car lighting systems, and industrial power supplies requiring stable component supply with AEC-Q101 assurance and long-lifecycle support.
Supply support for S3MH 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 S3MH belongs to TSC's AEC-Q101-qualified S3xH rectifier family, engineered specifically for high-reliability, high-voltage surface-mount rectification in automotive power systems and harsh-environment industrial equipment.
FAQ
What is the maximum junction temperature rating for the S3MH?
The S3MH has a maximum junction temperature (TJ(max)) of +150 °C, verified per AEC-Q101 stress testing. This rating allows reliable operation in under-hood automotive environments where ambient temperatures exceed 105 °C, provided thermal design maintains junction temperature below this limit using the specified RθJL = 13 °C/W path to PCB copper.
Is the S3MH pin-compatible with other parts in the S3xH series?
Yes - all S3xH devices including S3MH share identical DO-214AB (SMC) package dimensions, anode/cathode terminal locations, and polarity marking. Voltage variants (S3AH to S3MH) differ only in internal die construction; mechanical and soldering interfaces remain fully interchangeable on the same PCB footprint.
Does the S3MH meet automotive qualification standards?
Yes, the S3MH is AEC-Q101 qualified, covering stress tests including high-temperature reverse bias (HTRB), temperature cycling, and unbiased highly accelerated stress test (UHAST). This qualification confirms suitability for automotive power electronics such as DC-DC converters and lighting control modules.
What is the reverse leakage current specification for the S3MH at elevated temperature?
At TJ = 125 °C and rated VRRM, the S3MH exhibits maximum reverse leakage current (IR) of 250 µA, per electrical specifications. This value is critical for snubber and hold-up circuit stability in high-temperature operation and is measured under standardized pulse conditions (PW = 30 ms).
Can the S3MH be used in high-frequency switching applications?
The S3MH has a reverse recovery time (trr) of 1500 ns, classifying it as a standard recovery rectifier. It is not recommended for high-frequency SMPS (>100 kHz) where ultrafast or Schottky diodes are preferred. However, it performs reliably in 20–60 kHz flyback/foward converters and snubber networks where moderate trr balances EMI and loss.
S3MH Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Series:
- -
- Package/Case:
- DO-214AB, SMC
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Technology:
- Standard
- Voltage - DC Reverse (Vr) (Max):
- 1000 V
- Current - Average Rectified (Io):
- 3A
- Voltage - Forward (Vf) (Max) @ If:
- 1.15 V @ 3 A
- Speed:
- Standard Recovery >500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- 1.5 µs
- Current - Reverse Leakage @ Vr:
- 10 µA @ 1000 V
- Capacitance @ Vr, F:
- 60pF @ 4V, 1MHz
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AB (SMC)
- Operating Temperature - Junction:
- -55°C ~ 150°C
S3MH FAQ
1.How can I place an order for S3MH through Aetrix?
Please submit a Request for Quotation (RFQ) for S3MH 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 S3MH reliable?
The price and inventory of S3MH are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for S3MH is usually 5 days.
3.What payment methods are accepted for S3MH?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for S3MH transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for S3MH?
S3MH orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your S3MH 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 S3MH?
For technical support, including S3MH datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your S3MH requirements.
6.How does Aetrix verify that S3MH is sourced from the original manufacturer or authorized distributors?
All S3MH 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 S3MH meets industry standards.
7.What is the process for return or replacement of S3MH?
All S3MH units undergo pre-shipment inspection (PSI). If there is an issue with S3MH, 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 S3MH part is unused and in its original packaging.
Return procedure for S3MH:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
S3MH Tags
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1N4448X-TP
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1N4148WX-TP
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1N4148TR
onsemi
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MMSD4148T1G
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BAS16HT1G
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1N914BWT
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BAS21LT1G
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LL4148
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MMSD914T1G
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BAV21W-7-F
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