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Taiwan Semiconductor Corporation S5MBH
- Part No.:
- S5MBH
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
S5MBH.pdf
- Description:
- DIODE GEN PURP 5A DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:1,868
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Product details
Overview
S5MBH from Taiwan Semiconductor is a surface-mount silicon rectifier diode rated for 1000 V repetitive peak reverse voltage (VRRM), 5 A average forward current (IF), and 200 A non-repetitive surge current (IFSM at 8.3 ms), with a maximum forward voltage of 1.1 V at 5 A and 25°C - used in automotive freewheeling and DC-DC converter snubber circuits.
For engineers reviewing the S5MBH datasheet, S5MBH pinout, S5MBH application, or S5MBH equivalent, key selection factors include its DO-214AA (SMB) package, AEC-Q101 qualification, glass-passivated junction, 150°C maximum junction temperature, and low 10 µA reverse leakage at 25°C.
Technical Context
The S5MBH is a single-die, unidirectional silicon rectifier optimized for high-voltage, medium-current switching applications. Its glass-passivated junction ensures stable performance under thermal cycling and humidity exposure, while the matte tin-plated leads meet J-STD-002 solderability requirements.
Designed for automotive-grade reliability, the S5MBH supports operation from –55°C to +150°C, exhibits 47°C/W junction-to-ambient thermal resistance (RθJA), and delivers 40 pF junction capacitance at 1 MHz and 4.0 V reverse bias - critical for minimizing switching losses in snubber networks.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 1000 V - supports primary-side rectification in 800 V-class AC/DC and isolated DC-DC converters |
| IF | 5 A continuous - sustains steady-state conduction in automotive lighting and power supply output stages |
| IFSM (8.3 ms) | 200 A - withstands inrush and transient surges without failure in motor drive freewheel paths |
| VF @ 5 A, 25°C | ≤1.1 V - reduces conduction loss and self-heating in thermally constrained SMB packages |
| IR @ 1000 V, 25°C | ≤10 µA - ensures minimal leakage in high-impedance hold-up and sensing circuits |
| TJ max | +150°C - enables operation in under-hood automotive environments without derating |
| RθJA | 47°C/W - defines thermal limit for PCB copper area design in natural-convection cooling |
Pinout & Package
Package: DO-214AA (SMB), surface-mount, cathode-indicated by band, matte tin-plated leads, UL 94V-0 molding compound, 0.090 g typical weight.
| 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 | Marked with band; connects to higher-potential rail (e.g., input bus or inductor output) |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive electronics per stress test requirements including HTGB, TC, HTRB, and UHAST |
| Glass-passivated junction | Prevents moisture ingress and metallization corrosion, enabling >10-year field life in humid environments |
| Low VF (≤1.1 V @ 5 A) | Reduces power dissipation by ~15% vs. comparable 1000 V rectifiers with VF ≥1.25 V |
| Junction capacitance = 40 pF | Minimizes capacitive coupling noise and EMI in high-frequency snubber and clamp circuits |
| Moisture sensitivity level 1 | Eliminates bake requirement prior to reflow; compatible with standard SMT assembly lines |
Applications
| Automotive DC-DC Converters | LED Headlamp Drivers |
|---|---|
Use Scenario: High-efficiency buck-boost converter supplying 12 V to LED modules from 9–16 V battery range with transient suppression. IC Role / Device Role / Timing Role: Freewheeling diode in synchronous rectifier stage, clamping inductive kickback during MOSFET off-time. Use Value: 1000 V VRRM provides margin against load-dump transients up to ±120 V; 200 A IFSM handles cold-crank surges. | Use Scenario: Constant-current LED driver with active current regulation and overvoltage protection in premium vehicle headlamps. IC Role / Device Role / Timing Role: Snubber diode across primary-side flyback transformer to absorb leakage energy and suppress voltage spikes. Use Value: 40 pF CJ limits capacitive feedthrough; glass passivation ensures long-term reliability under thermal cycling. |
| Industrial Power Supplies | Motor Control Freewheeling |
Use Scenario: 48 V input industrial SMPS delivering 5 V/3 A to PLC I/O modules with EN 61000-4-5 surge immunity. IC Role / Device Role / Timing Role: Output rectifier in secondary-side synchronous or quasi-resonant topology. Use Value: 150°C TJmax allows full 5 A rating at 85°C ambient without derating; RoHS/halogen-free compliance meets EU directives. | Use Scenario: Brushless DC motor controller with PWM-driven half-bridge driving 24 V fans or pumps in HVAC systems. IC Role / Device Role / Timing Role: Freewheeling path for inductive back-EMF when upper MOSFET turns off. Use Value: 1.1 V VF minimizes conduction loss during 100% duty-cycle braking; DO-214AA footprint enables compact layout. |
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-5EWH10-M3 | Same DO-214AA package, 1000 V VRRM, but 1.25 V VF @ 5 A and 25°C; no AEC-Q101 qualification | Not approved for automotive use; suitable for industrial power supplies only | Select if AEC-Q101 is not required and cost is prioritized over thermal efficiency |
| ON Semiconductor MUR5100CT | TO-220AC package, dual common-cathode configuration, 1000 V, 5 A per die; higher RθJA (50°C/W) | Requires heatsink for 5 A operation; incompatible pinout and board space | Select only when dual-diode topology or through-hole mounting is mandatory |
Compared with VS-5EWH10-M3 and MUR5100CT, the S5MBH uniquely combines AEC-Q101 qualification, low 1.1 V forward drop, and SMB footprint - making it the only choice for space-constrained, thermally demanding automotive freewheeling where reliability and efficiency are co-prioritized.
Availability
S5MBH is available at Aetrix Electronics and suitable for automotive lighting, DC-DC converters, and industrial power supplies requiring stable component supply, long-lifecycle assurance, and AEC-Q101-compliant sourcing.
Supply support for S5MBH 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 since 1979.
The S5MBH belongs to TSC's AEC-Q101-qualified SMB rectifier family, engineered specifically for high-reliability automotive and industrial power conversion where voltage margin, surge robustness, and thermal stability are essential.
FAQ
What is the maximum junction temperature rating for the S5MBH?
The S5MBH has a maximum junction temperature (TJ) rating of +150°C, verified per absolute maximum ratings table in the official datasheet. This allows uninterrupted operation in under-hood automotive environments and high-ambient industrial settings. The S5MBH maintains full 5 A current capability up to 85°C ambient when mounted on a standard 1-inch² copper pad, thanks to its 47°C/W RθJA.
Is the S5MBH pin-compatible with other parts in the S5xBH series?
Yes - all S5xBH variants (S5GBH, S5JBH, S5KBH, S5MBH) share identical DO-214AA (SMB) package dimensions, pinout, and thermal characteristics. Only the VRRM rating differs: 400 V to 1000 V. The S5MBH uses marking code "S5MB" and can be substituted on the same footprint where 1000 V blocking is required, with no PCB changes needed.
Does the S5MBH meet automotive qualification standards?
Yes, the S5MBH is explicitly AEC-Q101 qualified per the manufacturer's documentation. It has passed stress tests including high-temperature gate bias (HTGB), temperature cycling (TC), high-temperature reverse bias (HTRB), and unbiased highly accelerated stress test (UHAST). This certification confirms suitability for automotive powertrain, body control, and lighting modules.
What is the reverse leakage current specification for the S5MBH at 125°C?
At 125°C and rated reverse voltage (1000 V), the S5MBH exhibits a maximum reverse leakage current (IR) of 250 µA, as specified in the Electrical Specifications table. This value is measured using a 30 ms pulse test and reflects stable junction behavior under elevated thermal stress - critical for maintaining system efficiency in hot under-hood locations.
Can the S5MBH be used in snubber circuits?
Yes, the S5MBH is recommended for snubber applications, particularly in flyback and forward converters. Its 40 pF junction capacitance (CJ) at 1 MHz and 4.0 V, combined with low forward voltage and high surge capability, enables effective energy clamping with minimal parasitic oscillation. The S5MBH appears in the official Applications list under "Snubber" and "Freewheeling application".
S5MBH 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):
- 5A
- Voltage - Forward (Vf) (Max) @ If:
- 1.1 V @ 5 A
- Speed:
- Standard Recovery >500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- -
- 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
S5MBH FAQ
1.How can I place an order for S5MBH through Aetrix?
Please submit a Request for Quotation (RFQ) for S5MBH 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 S5MBH reliable?
The price and inventory of S5MBH are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for S5MBH is usually 5 days.
3.What payment methods are accepted for S5MBH?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for S5MBH transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for S5MBH?
S5MBH orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your S5MBH 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 S5MBH?
For technical support, including S5MBH datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your S5MBH requirements.
6.How does Aetrix verify that S5MBH is sourced from the original manufacturer or authorized distributors?
All S5MBH 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 S5MBH meets industry standards.
7.What is the process for return or replacement of S5MBH?
All S5MBH units undergo pre-shipment inspection (PSI). If there is an issue with S5MBH, 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 S5MBH part is unused and in its original packaging.
Return procedure for S5MBH:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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