My Inquiry
My Account
Taiwan Semiconductor Corporation S3KBH
- Part No.:
- S3KBH
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
S3KBH.pdf
- Description:
- DIODE GEN PURP 800V 3A DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:6,000
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
S3KBH from Taiwan Semiconductor is a surface-mount silicon rectifier diode rated for 3 A average forward current and 800 V repetitive peak reverse voltage in a DO-214AA (SMB) package, featuring low forward voltage drop (max 1.15 V at 3 A), high surge capability (80 A IFSM), and AEC-Q101 qualification for automotive use.
For engineers reviewing the S3KBH datasheet, S3KBH pinout, S3KBH application, or S3KBH equivalent, key selection criteria include its 800 V VRRM rating, 1.15 V VF max at 3 A, 1500 ns trr, moisture sensitivity level 1 compliance, and suitability for freewheeling and snubber circuits in automotive lighting and DC-DC converters.
Technical Context
The S3KBH is a single-die, glass-passivated junction standard recovery rectifier optimized for medium-voltage, medium-current switching applications. Its 1500 ns reverse recovery time and 40 pF junction capacitance reflect trade-offs favoring robust surge handling over ultrafast switching.
Designed for surface-mount assembly with matte tin-plated leads compliant to J-STD-002, it operates across –55°C to +150°C junction temperature and meets UL 94V-0 flammability and halogen-free requirements per IEC 61249-2-21.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 800 V - maximum non-repetitive reverse voltage the device blocks reliably in circuit |
| IF(AV) | 3 A - continuous average forward current under specified thermal conditions |
| IFSM | 80 A - peak non-repetitive surge current the device withstands for 8.3 ms half-sine |
| VF(max) | 1.15 V @ 3 A, 25°C - forward conduction loss directly impacts power dissipation and efficiency |
| trr | 1500 ns - reverse recovery time determines switching losses and EMI in inductive load circuits |
| TJ(max) | +150°C - maximum junction temperature defines thermal derating envelope and heatsink requirements |
| IR(max) | 10 µA @ 25°C - leakage current affects standby power and high-impedance node integrity |
Pinout & Package
Package: DO-214AA (SMB), surface-mount, cathode indicated by band, matte tin-plated leads, 0.090 g typical weight.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry point | Connected to lower-potential side of load or source in rectification path |
| Cathode | Forward current exit point | Marked by band; connects to higher-potential node and carries return current in DC output |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing |
| Glass passivated junction | Enhances long-term stability and resistance to humidity-induced degradation |
| Moisture sensitivity level 1 | Enables unlimited floor life before reflow; no baking required prior to assembly |
| UL 94V-0 molding compound | Meets stringent flammability requirements for safety-critical automotive and industrial enclosures |
| Halogen-free construction | Complies with IEC 61249-2-21 for environmentally regulated end markets |
Applications
| Automotive Lighting | DC-DC Converter Output Rectification |
|---|---|
Use Scenario: Reverse polarity protection and LED driver freewheeling in headlamp and DRL modules. IC Role / Device Role / Timing Role: Freewheeling diode providing current path during MOSFET off-time and clamping inductive kickback. Use Value: 80 A surge rating handles lamp inrush; 800 V VRRM accommodates battery transients up to ±120 V. | Use Scenario: Secondary-side rectification in isolated 12 V–48 V automotive DC-DC converters. IC Role / Device Role / Timing Role: Unidirectional current steering to convert transformer AC output to regulated DC bus. Use Value: 1.15 V VF max limits conduction loss at 3 A; DO-214AA footprint enables compact layout. |
| Snubber Network | Freewheeling in Solenoid Drivers |
Use Scenario: RC snubber across relay coils or motor windings to suppress voltage spikes. IC Role / Device Role / Timing Role: Voltage-clamping element that conducts transient energy into the snubber capacitor. Use Value: 800 V VRRM safely absorbs 600 V+ transients; 1500 ns trr avoids premature turn-on during fast edges. | Use Scenario: Freewheeling path for 24 V solenoid valves in transmission control units. IC Role / Device Role / Timing Role: Provides low-impedance return path when driving transistor switches off. Use Value: Glass passivation ensures reliability under repeated thermal cycling; AEC-Q101 supports 15-year vehicle life. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar rectifier diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Vishay VS-3K80 | Same DO-214AA package, identical 800 V VRRM and 3 A IF, but VF max = 1.25 V at 3 A | Higher VF increases conduction loss in high-duty-cycle applications | Acceptable where 0.1 V VF margin is tolerable and Vishay supply chain preference applies |
| ON Semiconductor MUR380 | Ultrafast recovery (trr = 75 ns), same 800 V/3 A rating, but not AEC-Q101 qualified | Better for high-frequency SMPS; unsuitable for automotive qualification-critical designs | Select only for non-automotive industrial converters requiring faster switching |
Compared with VS-3K80 and MUR380, the S3KBH uniquely combines AEC-Q101 qualification, 1.15 V VF max, and 800 V/3 A ratings in DO-214AA-making it optimal for automotive freewheeling and snubbing where reliability and low loss are jointly required.
Availability
S3KBH is available at Aetrix Electronics and suitable for automotive lighting, DC-DC converter output rectification, and snubber network design requiring stable component supply and long-term production continuity.
Supply support for S3KBH 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 S3KBH belongs to TSC's AEC-Q101-qualified SMB rectifier family, engineered specifically for robustness in automotive power conversion and protection circuits where thermal stability and surge resilience are critical.
FAQ
What is the maximum junction temperature rating for the S3KBH?
The S3KBH has a maximum junction temperature (TJ) rating of +150°C, enabling operation in under-hood automotive environments and thermally constrained industrial enclosures. This rating supports derating curves down to zero current at 150°C ambient when mounted on standard PCB copper, and must be respected in thermal design to ensure long-term reliability of the S3KBH.
Is the S3KBH suitable for automotive applications?
Yes, the S3KBH is AEC-Q101 qualified and explicitly listed for automotive applications including car lighting and DC-DC converters. Its glass passivated junction, moisture sensitivity level 1, and compliance with JESD201 Class 2 whisker testing confirm its suitability for automotive-grade production. The S3KBH meets these requirements without derating or special handling.
What does the marking code 'S3KB' indicate on the S3KBH device?
The marking code 'S3KB' on the S3KBH identifies it as the 800 V variant within the S3xBH series (where 'K' corresponds to 800 V per the datasheet table). It is laser-marked on the cathode-banded surface of the DO-214AA package and serves as the visual identifier for traceability and assembly verification of the S3KBH.
How does the reverse recovery time of the S3KBH affect its use in snubber circuits?
The S3KBH has a reverse recovery time (trr) of 1500 ns, which is appropriate for snubber networks in 50–200 kHz switching applications where moderate dV/dt suppression is needed. Unlike ultrafast diodes, this trr avoids oscillatory turn-on while still limiting voltage overshoot-making the S3KBH effective in relay and solenoid snubbers where the S3KBH's 800 V rating provides margin against transients.
What packaging and reel quantity is available for the S3KBH?
The S3KBH is supplied in DO-214AA (SMB) package on tape-and-reel format, with 3,000 units per reel. This configuration supports automated pick-and-place assembly and complies with JEDEC standards for moisture sensitivity level 1-eliminating bake requirements prior to reflow. Traceable lot coding is included for full S3KBH supply chain visibility.
S3KBH 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):
- 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 @ 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
S3KBH FAQ
1.How can I place an order for S3KBH through Aetrix?
Please submit a Request for Quotation (RFQ) for S3KBH 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 S3KBH reliable?
The price and inventory of S3KBH are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for S3KBH is usually 5 days.
3.What payment methods are accepted for S3KBH?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for S3KBH transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for S3KBH?
S3KBH orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your S3KBH 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 S3KBH?
For technical support, including S3KBH datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your S3KBH requirements.
6.How does Aetrix verify that S3KBH is sourced from the original manufacturer or authorized distributors?
All S3KBH 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 S3KBH meets industry standards.
7.What is the process for return or replacement of S3KBH?
All S3KBH units undergo pre-shipment inspection (PSI). If there is an issue with S3KBH, 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 S3KBH part is unused and in its original packaging.
Return procedure for S3KBH:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
S3KBH Tags
-
1N4448X-TP
Micro Commercial Co
-
1N4148WX-TP
Micro Commercial Co
-
1N4148TR
onsemi
-
MMSD4148T1G
onsemi
-
MMBD914LT3G
onsemi
-
BAS16HT1G
onsemi
-
1N914BWT
onsemi
-
BAS21LT1G
onsemi
-
LL4148
onsemi
-
BAS16LT1G
onsemi
-
MMSD914T1G
onsemi
-
BAV21W-7-F
Diodes Incorporated
Tech Hub
Counterfeit components can hide behind convincing markings and passing basic function tests. This engineering reference covers source traceability, external inspection, X-ray, XRF, electrical testing, …
A practical engineering and sourcing framework covering lifecycle verification, lifetime-buy calculations, replacement qualification, supplier checks and counterfeit-risk controls.
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
