My Inquiry
My Account
Taiwan Semiconductor Corporation SMLWH
- Part No.:
- SMLWH
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Diodes
- Package:
- SOD-123W
- Datasheet:
-
SMLWH.pdf
- Description:
- 0.8A, 1000V, STANDARD RECOVERY R
- Quantity:
- Payment:
- Shipping:
Inventory:19,390
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
SMLWH from Taiwan Semiconductor is a 1000V repetitive peak reverse voltage, 0.8A average forward current standard surface-mount rectifier in SOD-123W package, glass passivated junction, AEC-Q101 qualified, used in automotive snubber networks and DC-DC converter output stages.
For engineers reviewing the SMLWH datasheet, SMLWH pinout, SMLWH application, or SMLWH equivalent, key selection criteria include VRRM = 1000 V, IF = 0.8 A, VF ≤ 1.10 V at 0.8 A / 25°C, TJ max = 150°C, and SOD-123W mechanical compatibility with automated placement.
Technical Context
The SMLWH operates as a single-die, unidirectional silicon rectifier with glass-passivated PN junction, rated for repetitive reverse voltages up to 1000 V and surge currents up to 20 A (8.3 ms half-sine). Its thermal resistance RθJA is 84°C/W on a 5 mm × 5 mm Cu pad PCB.
Electrical behavior is defined by low leakage (IR ≤ 1 µA at 25°C, ≤150 µA at 125°C), junction capacitance CJ = 7 pF at 1 MHz / 4 V, and forward voltage ranging from 0.84 V (typ, 0.8 A, 125°C) to 1.10 V (max, 0.8 A, 25°C).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 1000 V - maximum repetitive reverse blocking voltage; defines safe operating limit in high-voltage clamping or snubber circuits |
| IF | 0.8 A - continuous average forward current; determines steady-state power dissipation capability (PD ≈ 0.88 W at VF = 1.10 V) |
| IFSM | 20 A - non-repetitive surge current rating; supports transient energy absorption in flyback or inductive load switching |
| TJ max | 150°C - maximum junction temperature; enables operation in under-hood automotive environments without derating below 125°C ambient |
| RθJA | 84°C/W - junction-to-ambient thermal resistance on standard test board; informs minimum copper area needed for thermal management |
| CJ | 7 pF - junction capacitance at 1 MHz / 4 V; impacts high-frequency switching noise and EMI in fast-switching converters |
Pinout & Package
Package: SOD-123W - surface-mount plastic case with matte tin-plated leads, UL 94V-0 molding compound, cathode indicated by band, polarity-critical for rectification direction.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry point | Connected to lower-potential side of circuit; must be routed with adequate trace width for 0.8 A continuous conduction |
| Cathode | Forward current exit point / reverse voltage blocking terminal | Marked by band; ties to higher-potential node; reverse-biased during off-state to sustain 1000 V |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated reliability for automotive electronics including engine control, lighting, and body modules |
| Glass passivated junction | Enhanced moisture resistance and long-term stability under thermal cycling and humidity exposure |
| Moisture sensitivity level 1 | No floor life limitation or baking requirement before reflow; compatible with standard SMT assembly lines |
| SOD-123W footprint | Enables high-density PCB layout and compatibility with industry-standard pick-and-place equipment |
| Halogen-free construction | Meets IEC 61249-2-21; supports environmental compliance for global automotive OEM supply chains |
Applications
| Automotive Snubber Networks | DC-DC Converter Output Rectification |
|---|---|
Use Scenario: Suppressing voltage spikes across MOSFETs/IGBTs in automotive motor drivers and LED ballasts. IC Role / Device Role / Timing Role: Passive clamping diode absorbing inductive kickback energy during switch turn-off. Use Value: 1000 V VRRM ensures margin against transients exceeding 600 V bus rails; 20 A IFSM handles repetitive surge events without degradation. | Use Scenario: Secondary-side rectification in isolated 12 V → 5 V/3.3 V buck-derived converters for infotainment systems. IC Role / Device Role / Timing Role: Unidirectional current path converting transformer AC output to regulated DC. Use Value: Low VF (≤1.10 V) minimizes conduction loss at 0.8 A; SOD-123W allows compact layout near controller ICs. |
| Car Lighting Power Supplies | Industrial AC-DC Input Stage |
Use Scenario: Constant-current driver front-end in LED headlamps and DRL modules subjected to load dump pulses. IC Role / Device Role / Timing Role: Input rectifier sustaining 1000 V reverse stress during ISO 7637-2 pulse 5a (load dump). Use Value: AEC-Q101 qualification and 150°C TJ max ensure operation across -40°C to +125°C under-hood conditions. | Use Scenario: Bridge or half-wave rectification in industrial 24 V AC input power supplies for PLC I/O modules. IC Role / Device Role / Timing Role: Discrete rectifying element replacing larger DO-214AC parts where board space is constrained. Use Value: SOD-123W footprint reduces PCB area by >60% vs. SMA; 0.016 g weight eases vibration-sensitive mounting. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STTH08L06W | 600 V VRRM, 0.8 A IF, same SOD-123W package, VF = 0.95 V (max @ 0.8 A) | Limited to ≤600 V systems; unsuitable for 1000 V snubbers or load dump protection | Select when 600 V rating suffices and lower VF is prioritized over voltage margin |
| ES1J-M3/84A | 600 V VRRM, 1 A IF, SMA package, VF = 0.95 V (max @ 1 A), no AEC-Q101 | Higher current but larger footprint and no automotive qualification; not drop-in replaceable | Choose for non-automotive 600 V applications needing 1 A capacity and cost-sensitive sourcing |
Compared with STTH08L06W and ES1J-M3/84A, the SMLWH uniquely delivers 1000 V blocking with AEC-Q101 compliance in SOD-123W-enabling direct use in high-reliability automotive snubbers where voltage margin and qualification are non-negotiable.
Availability
SMLWH is available at Aetrix Electronics and suitable for automotive snubber networks, DC-DC converter output rectification, and car lighting power supplies requiring stable component supply and AEC-Q101 assurance.
Supply support for SMLWH 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 SMLWH belongs to TSC's SxLWH series of AEC-Q101-qualified surface-mount rectifiers, engineered specifically for high-voltage transient suppression and reliable DC power conversion in harsh automotive environments.
FAQ
What is the maximum repetitive peak reverse voltage rating for the SMLWH?
The SMLWH has a maximum repetitive peak reverse voltage (VRRM) rating of 1000 V. This value is confirmed in the Absolute Maximum Ratings table of the official Taiwan Semiconductor datasheet (Version A2103). The 1000 V rating allows the SMLWH to safely block high-voltage transients in automotive snubber circuits and withstand load dump conditions per ISO 7637-2. It is the highest voltage grade in the SxLWH family.
Is the SMLWH qualified for automotive applications?
Yes, the SMLWH is AEC-Q101 qualified, as explicitly stated in the FEATURES section of the Taiwan Semiconductor documentation. This qualification covers stress testing for temperature cycling, humidity bias, mechanical shock, and other reliability requirements mandated for discrete semiconductors in automotive electronic systems. The SMLWH is intended for use in engine control units, lighting modules, and other under-hood applications where such certification is required.
What package type does the SMLWH use, and what are its key mechanical attributes?
The SMLWH uses the SOD-123W surface-mount package. Key mechanical attributes include matte tin-plated leads compliant with J-STD-002 solderability, UL 94V-0 flammability-rated molding compound, polarity indicated by a cathode band, and a mass of approximately 0.016 g. The SOD-123W footprint supports automated placement and provides thermal performance with RθJA = 84°C/W on a 5 mm × 5 mm copper pad PCB.
What is the forward voltage drop of the SMLWH at rated current and temperature?
At 0.8 A forward current and 25°C junction temperature, the SMLWH exhibits a maximum forward voltage (VF) of 1.10 V, with a typical value of 0.94 V. At 125°C and 0.8 A, VF drops to a maximum of 1.01 V (typ 0.84 V), reflecting the negative temperature coefficient of silicon diodes. These values are measured under pulsed conditions (PW = 0.3 ms) and define conduction losses in power stage design.
Does the SMLWH have any environmental compliance certifications?
Yes, the SMLWH is RoHS compliant and halogen-free per IEC 61249-2-21. It also meets J-STD-020 moisture sensitivity level 1, meaning it has unlimited floor life and requires no pre-reflow baking. These certifications are documented in the FEATURES section and confirm suitability for environmentally regulated automotive and industrial supply chains.
SMLWH Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Series:
- -
- Package/Case:
- SOD-123W
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Technology:
- Standard
- Voltage - DC Reverse (Vr) (Max):
- 1000 V
- Current - Average Rectified (Io):
- 800mA
- Voltage - Forward (Vf) (Max) @ If:
- 1.1 V @ 800 mA
- Speed:
- Standard Recovery >500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- -
- Current - Reverse Leakage @ Vr:
- 1 µA @ 1000 V
- Capacitance @ Vr, F:
- 7pF @ 4V, 1MHz
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOD-123W
- Operating Temperature - Junction:
- -55°C ~ 150°C
SMLWH FAQ
1.How can I place an order for SMLWH through Aetrix?
Please submit a Request for Quotation (RFQ) for SMLWH 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 SMLWH reliable?
The price and inventory of SMLWH are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMLWH is usually 5 days.
3.What payment methods are accepted for SMLWH?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMLWH transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMLWH?
SMLWH orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMLWH 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 SMLWH?
For technical support, including SMLWH datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMLWH requirements.
6.How does Aetrix verify that SMLWH is sourced from the original manufacturer or authorized distributors?
All SMLWH 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 SMLWH meets industry standards.
7.What is the process for return or replacement of SMLWH?
All SMLWH units undergo pre-shipment inspection (PSI). If there is an issue with SMLWH, 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 SMLWH part is unused and in its original packaging.
Return procedure for SMLWH:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMLWH 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…
