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Taiwan Semiconductor Corporation S3MBH
- Part No.:
- S3MBH
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
S3MBH.pdf
- Description:
- DIODE GEN PURP 3A DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:5,870
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Product details
Overview
S3MBH from Taiwan Semiconductor is a surface-mount silicon rectifier diode rated for 1000 V repetitive peak reverse voltage (VRRM), 3 A average forward current (IF), and 80 A non-repetitive surge current (IFSM), with a maximum forward voltage of 1.15 V at 3 A and 25°C - used in automotive freewheeling, DC-DC snubbers, and car lighting circuits.
For engineers reviewing the S3MBH datasheet, S3MBH pinout, S3MBH application, or S3MBH equivalent, key selection criteria include its DO-214AA (SMB) package, AEC-Q101 qualification, glass-passivated junction, 150°C max junction temperature, and low-leakage performance at high reverse bias.
Technical Context
The S3MBH is a single-die, standard recovery rectifier optimized for high-voltage, medium-current switching applications where robust surge handling and thermal stability are required. Its 1500 ns reverse recovery time (trr) and 40 pF junction capacitance reflect trade-offs favoring ruggedness over ultra-fast switching.
Designed for automotive-grade reliability, it features matte tin-plated leads compliant with J-STD-002 solderability, JESD201 Class 2 whisker resistance, and moisture sensitivity level 1 per J-STD-020 - enabling direct placement in high-volume automated assembly without baking.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 1000 V - supports isolation and blocking in 800 V DC bus systems with safety margin |
| IF | 3 A continuous - suitable for mid-power DC-DC converter outputs and LED driver return paths |
| IFSM | 80 A (8.3 ms half-sine) - withstands inductive turn-off surges in automotive solenoid or motor control freewheeling |
| VF | ≤1.15 V @ 3 A, 25°C - limits conduction loss to ≤3.45 W in continuous operation |
| IR | ≤10 µA @ 1000 V, 25°C - ensures minimal leakage in high-impedance snubber networks |
| TJ max | 150°C - enables operation in under-hood environments without derating below 125°C ambient |
| RθJL | 10°C/W - allows direct PCB copper pour heat sinking to maintain junction temp within limit at full load |
Pinout & Package
Package: DO-214AA (SMB), surface-mount, cathode-indicated by band, matte tin-plated leads, UL 94V-0 molding compound.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry point | Connected to lower-potential side (e.g., switch node or ground return) in freewheeling path |
| Cathode | Forward current exit / reverse-blocking terminal | Connected to higher-potential rail; polarity band must align with PCB silkscreen for automated placement |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive power electronics including engine control modules and lighting ECUs |
| Glass-passivated junction | Prevents moisture ingress and metallization corrosion during reflow and long-term operation |
| Low VF (≤1.15 V) | Reduces I²R losses in 3 A continuous paths, improving efficiency in thermally constrained layouts |
| High IFSM (80 A) | Survives repeated inductive kick events in relay drivers and brushed motor commutation |
| MSL Level 1 | Zero bake requirement before SMT placement - compatible with standard J-STD-020 assembly flow |
Applications
| Automotive Freewheeling | DC-DC Converter Snubber |
|---|---|
Use Scenario: Suppressing back-EMF spikes across 12 V/24 V solenoids and fuel injectors in engine management systems. IC Role / Device Role / Timing Role: Freewheeling diode providing low-impedance path for inductive current decay. Use Value: 80 A surge rating and 1000 V VRRM prevent breakdown during transient overvoltage events. | Use Scenario: Clamping voltage overshoot across MOSFETs in isolated flyback or forward converters. IC Role / Device Role / Timing Role: Snubber diode absorbing energy from transformer leakage inductance. Use Value: Low IR (≤10 µA) minimizes standby power loss while maintaining high-voltage blocking integrity. |
| Car Lighting Power Supply | Industrial Relay Output Protection |
Use Scenario: Rectifying AC input in LED headlight ballast power supplies operating in hot under-hood environments. IC Role / Device Role / Timing Role: Input bridge or output rectifier handling pulsed 3 A loads. Use Value: 150°C TJ max and MSL Level 1 enable reliable operation without thermal derating or pre-bake logistics. | Use Scenario: Protecting PLC output transistors driving 24 V industrial relays with inductive coils. IC Role / Device Role / Timing Role: Clamp diode placed across relay coil terminals. Use Value: Glass passivation and JESD201 Class 2 whisker resistance ensure long-term reliability in vibration-prone factory settings. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STTH3L06S | 600 V VRRM, 3 A IF, 75 ns trr, TO-277 package | Higher speed, lower voltage - unsuitable for 1000 V bus clamping | Select only if system VR ≤ 600 V and fast recovery is prioritized over surge robustness |
| ON Semi MUR3100 | 1000 V VRRM, 3 A IF, 75 ns trr, DO-201AD package | Faster recovery but larger footprint and no AEC-Q101 qualification | Use where board space permits larger case and automotive qualification is not required |
Compared with STTH3L06S and MUR3100, the S3MBH trades faster recovery for superior surge immunity and automotive qualification in a compact SMB package - making it optimal for cost-sensitive, high-reliability 1000 V freewheeling and snubbing roles.
Availability
S3MBH is available at Aetrix Electronics and suitable for automotive lighting, DC-DC converter snubbers, and industrial relay protection requiring stable component supply across production lifecycles.
Supply support for S3MBH 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, and protection components.
The S3MBH belongs to TSC's AEC-Q101-qualified SMB rectifier family, engineered specifically for automotive and industrial power conversion where high-voltage blocking, surge resilience, and automated assembly compatibility are critical.
FAQ
What is the maximum repetitive peak reverse voltage (VRRM) rating for the S3MBH?
The S3MBH has a VRRM rating of 1000 V, verified in the absolute maximum ratings table of Taiwan Semiconductor's official datasheet (Version B2207). This rating defines the highest reverse voltage the S3MBH can block repeatedly without breakdown under specified conditions, making it suitable for use in 800 V DC systems with appropriate safety margin. The S3MBH maintains this rating across its full operating temperature range.
Is the S3MBH qualified for automotive applications?
Yes, the S3MBH is explicitly AEC-Q101 qualified per the manufacturer's documentation, confirming its suitability for automotive power electronics including engine control units, lighting modules, and body electronics. This qualification covers stress testing for temperature cycling, humidity, mechanical shock, and solderability - all validated for the S3MBH in its DO-214AA (SMB) package.
What is the forward voltage drop (VF) of the S3MBH at rated current?
The S3MBH exhibits a maximum forward voltage drop of 1.15 V at 3 A forward current and 25°C junction temperature, as specified in the electrical characteristics table. This VF value is measured under pulse conditions (PW = 0.3 ms) and directly impacts conduction losses - for example, resulting in ≤3.45 W dissipation at full rated current, which must be managed via PCB thermal design.
Does the S3MBH have a defined reverse recovery time (trr)?
Yes, the S3MBH has a typical reverse recovery time of 1500 ns, measured at IF = 0.5 A, IR = 1.0 A, and Irr = 0.25 A. This trr value reflects its standard recovery behavior, distinguishing it from ultrafast or soft-recovery rectifiers. It is appropriate for line-frequency and moderate-switching applications but not recommended for >100 kHz hard-switched topologies where lower trr is critical.
What package type does the S3MBH use, and what are its key mechanical attributes?
The S3MBH uses the DO-214AA (SMB) surface-mount package, with matte tin-plated leads compliant with J-STD-002, UL 94V-0 flammability-rated molding compound, and polarity indicated by a cathode band. Its weight is approximately 0.090 g, and it meets JESD201 Class 2 whisker resistance - all confirmed in the mechanical data section of the S3MBH datasheet.
S3MBH Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Series:
- -
- Package/Case:
- DO-214AA, SMB
- 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:
- 40pF @ 4V, 1MHz
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AA (SMB)
- Operating Temperature - Junction:
- -55°C ~ 150°C
S3MBH FAQ
1.How can I place an order for S3MBH through Aetrix?
Please submit a Request for Quotation (RFQ) for S3MBH 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 S3MBH reliable?
The price and inventory of S3MBH are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for S3MBH is usually 5 days.
3.What payment methods are accepted for S3MBH?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for S3MBH transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for S3MBH?
S3MBH orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your S3MBH 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 S3MBH?
For technical support, including S3MBH datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your S3MBH requirements.
6.How does Aetrix verify that S3MBH is sourced from the original manufacturer or authorized distributors?
All S3MBH 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 S3MBH meets industry standards.
7.What is the process for return or replacement of S3MBH?
All S3MBH units undergo pre-shipment inspection (PSI). If there is an issue with S3MBH, 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 S3MBH part is unused and in its original packaging.
Return procedure for S3MBH:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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