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Taiwan Semiconductor Corporation S5KBH
- Part No.:
- S5KBH
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
S5KBH.pdf
- Description:
- DIODE GEN PURP 800V 5A DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:5,290
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Product details
Overview
S5KBH from Taiwan Semiconductor is a surface-mount silicon rectifier diode rated for 5 A average forward current and 800 V repetitive peak reverse voltage, featuring glass-passivated junction, low forward voltage drop (≤1.1 V at 5 A), and high surge capability (200 A @ 8.3 ms). It is AEC-Q101 qualified and used in automotive DC-DC converters and freewheeling circuits.
For engineers reviewing the S5KBH datasheet, S5KBH pinout, S5KBH application, or S5KBH equivalent, key selection criteria include its DO-214AA (SMB) package, 800 V VRRM, 5 A IF, 200 A IFSM, and AEC-Q101 qualification for automotive-grade reliability.
Technical Context
The S5KBH is a single-die, unidirectional silicon rectifier optimized for high-efficiency AC/DC and DC/DC conversion. Its glass-passivated junction ensures stable reverse leakage (<10 µA at 25°C) and robust thermal performance with RθJA = 47 °C/W and RθJL = 13 °C/W.
Designed for automated SMT assembly, it supports reflow soldering per J-STD-002, features matte tin-plated leads, and meets JESD201 Class 2 whisker resistance and UL 94V-0 flammability requirements in its DO-214AA (SMB) molded package.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 800 V - Maximum non-repetitive reverse voltage the device blocks reliably in circuit |
| IF | 5 A - Continuous average forward current rating at TA = 25°C, derates above 25°C |
| IFSM | 200 A - Peak non-repetitive surge current (8.3 ms half-sine) without failure |
| VF | ≤1.1 V - Forward voltage drop at 5 A and 25°C, directly impacts conduction loss and thermal design |
| TJ max | +150 °C - Maximum junction temperature enabling operation in under-hood automotive environments |
| CJ | 40 pF - Junction capacitance at 1 MHz and 4 V reverse bias, affects high-frequency switching behavior |
Pinout & Package
Package: DO-214AA (SMB), surface-mount, single-anode/single-cathode configuration with cathode band marking. Matte tin-plated leads, moisture sensitivity level 1 (per J-STD-020).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (lead 1) | Forward current entry point | Connected to lower-potential side of rectified path; polarity must match PCB silkscreen |
| Cathode (lead 2) | Forward current exit / reverse blocking terminal | Marked by visible band; connects to higher-potential node; defines direction of conduction |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive electronics use, including temperature cycling, HTRB, and ESD testing per stress test plan |
| Glass-passivated junction | Enhances long-term reliability and stability of reverse leakage and breakdown characteristics over life |
| Low VF (≤1.1 V @ 5 A) | Reduces power dissipation and thermal load in high-current rectification paths |
| High IFSM (200 A) | Withstands transient surges common in automotive load-dump and inductive switching events |
| DO-214AA (SMB) package | Standardized footprint compatible with automated pick-and-place and reflow processes; UL 94V-0 rated |
Applications
| Automotive DC-DC Converters | Car Lighting Systems |
|---|---|
Use Scenario: High-efficiency buck-derived DC-DC conversion in 12 V/48 V hybrid architectures. IC Role / Device Role / Timing Role: Output rectifier in synchronous or quasi-resonant topologies. Use Value: Low VF minimizes conduction loss; AEC-Q101 rating ensures compliance with automotive functional safety requirements. | Use Scenario: LED driver output stage in headlamp and tail lamp modules. IC Role / Device Role / Timing Role: Freewheeling diode across inductive LED current regulators. Use Value: 200 A IFSM handles inrush and fault currents; DO-214AA enables compact board layout. |
| Snubber Networks | Industrial Freewheeling Circuits |
Use Scenario: RC snubber across MOSFETs/IGBTs in motor drives and power supplies. IC Role / Device Role / Timing Role: Fast-recovery clamping diode absorbing turn-off energy. Use Value: 800 V VRRM withstands voltage spikes up to 80% of system rail; low CJ reduces capacitive loading. | Use Scenario: Back-EMF protection in solenoid, relay, and brushless DC motor control. IC Role / Device Role / Timing Role: Unidirectional flyback path for inductive energy dissipation. Use Value: Glass-passivated junction ensures stable IR over temperature and lifetime; 150 °C TJ max supports high-ambient industrial enclosures. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STTH5L06W | 600 V VRRM, 5 A IF, TO-277 package, slightly higher VF (1.15 V) | Limited to ≤600 V systems; TO-277 requires different pad layout | Select when lower cost and TO-277 compatibility outweigh need for 800 V rating |
| ON Semi MUR580 | 800 V VRRM, 5 A IF, DO-214AC (SMA) package, faster recovery (~75 ns) | Smaller footprint but lower surge rating (150 A IFSM) and no AEC-Q101 qualification | Select when fast recovery is critical and automotive qualification is not required |
Compared with STTH5L06W and MUR580, the S5KBH uniquely combines 800 V rating, AEC-Q101 qualification, and DO-214AA packaging-making it the only option among the three validated for under-hood automotive rectification where both voltage margin and reliability certification are mandatory.
Availability
S5KBH is available at Aetrix Electronics and suitable for automotive DC-DC converters, car lighting systems, and industrial freewheeling circuits requiring stable component supply and long-term lifecycle support.
Supply support for S5KBH 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 rectifiers, TVS devices, and automotive-qualified components.
The S5KBH belongs to TSC's S5xBH family of AEC-Q101-certified surface-mount rectifiers, engineered specifically for high-reliability automotive power conversion and industrial snubbing applications demanding robust surge handling and thermal stability.
FAQ
What is the maximum repetitive peak reverse voltage (VRRM) for the S5KBH?
The S5KBH has a VRRM of 800 V, meaning it can reliably block up to 800 V of reverse voltage in repetitive operation. This value is confirmed in the Absolute Maximum Ratings table of the official Taiwan Semiconductor datasheet (Version A2102) and distinguishes S5KBH from S5GBH (400 V), S5JBH (600 V), and S5MBH (1000 V) in the same family. Exceeding 800 V risks avalanche breakdown.
Is the S5KBH qualified for automotive applications?
Yes, the S5KBH is explicitly AEC-Q101 qualified per the manufacturer's documentation. This qualification covers stress tests including high-temperature reverse bias (HTRB), temperature cycling, and electrostatic discharge (ESD), confirming suitability for automotive power systems such as engine control units and lighting modules. The S5KBH datasheet (page 1) states this qualification unambiguously.
What package type does the S5KBH use, and is it RoHS compliant?
The S5KBH uses the DO-214AA (SMB) surface-mount package with matte tin-plated leads and is RoHS compliant and halogen-free per IEC 61249-2-21. Its molding compound meets UL 94V-0 flammability rating, and it carries moisture sensitivity level 1 per J-STD-020-enabling standard reflow without baking. These attributes are specified in the Mechanical Data and Ordering Information sections of the S5KBH datasheet.
What is the forward voltage (VF) of the S5KBH at rated current?
The S5KBH has a maximum forward voltage of 1.1 V at 5 A and 25°C junction temperature, measured under pulsed conditions (PW = 0.3 ms). This value is critical for calculating conduction losses in power stages. At elevated temperatures (e.g., 125°C), VF decreases slightly due to semiconductor physics, but the 1.1 V max remains the design limit for thermal modeling at room temperature.
Does the S5KBH have a specified junction-to-ambient thermal resistance (RθJA)?
Yes, the S5KBH has a typical RθJA of 47 °C/W when mounted on a standard JEDEC 2S2P copper pad (1 in², 2 oz Cu). This value is published in the Thermal Performance section of the datasheet and is essential for estimating junction temperature rise under real-world power dissipation. RθJL is 13 °C/W, supporting lead-based thermal relief in high-power layouts.
S5KBH 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):
- 800 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 @ 800 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
S5KBH FAQ
1.How can I place an order for S5KBH through Aetrix?
Please submit a Request for Quotation (RFQ) for S5KBH 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 S5KBH reliable?
The price and inventory of S5KBH are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for S5KBH is usually 5 days.
3.What payment methods are accepted for S5KBH?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for S5KBH transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for S5KBH?
S5KBH orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your S5KBH 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 S5KBH?
For technical support, including S5KBH datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your S5KBH requirements.
6.How does Aetrix verify that S5KBH is sourced from the original manufacturer or authorized distributors?
All S5KBH 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 S5KBH meets industry standards.
7.What is the process for return or replacement of S5KBH?
All S5KBH units undergo pre-shipment inspection (PSI). If there is an issue with S5KBH, 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 S5KBH part is unused and in its original packaging.
Return procedure for S5KBH:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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