Specifications
| Type | Description |
|---|---|
| Part Number | XL357（X）-G |
| Manufacturer | XINGLIGHT |
| Product Type | SMD LED |
| Category | LED |
| Current Transfer Ratio | 80-650 % |
| Isolation Voltage | 3750 Vrms |
| Collector-Emitter Breakdown Voltage | >=80 V |
| Operating Temperature | -55 to +110 °C |
| Case | SOP4 |
| Molding Compound Flammability Rating | UL 94V-0 |
| Terminal Finish | Matte tin-plated leads |
| Package | SOP4 |
| Shipping Quantity | 3500 pcs/Tape & Reel |
| Marking Code | XL357A |
| Forward Current | 50 mA |
| Peak Forward Current | 1 A |
| Reverse Voltage | 6 V |
| Input Power Dissipation | 70 mW |
| Collector Power Dissipation | 150 mW |
| Collector Current | 50 mA |
| Collector-Emitter Voltage | 80 V |
| Emitter-Collector Voltage | 7 V |
| Total Power Dissipation | 200 mW |
| Isolation Voltage | 3750 Vrms |
| Rated Impulse Isolation Voltage | 5000 V |
| Rated Repetitive Peak Isolation Voltage | 600 V |
| Thermal Resistance Junction-to-Air | 430 °C/W |
| Thermal Resistance Junction-to-Case | 350 °C/W |
| Thermal Resistance Junction-to-Lead | 368 °C/W |
| Operating Temperature | -55 to +110 °C |
| Storage Temperature Range | -55 to +125 °C |
| Soldering Temperature | 260 °C |
| Forward Voltage | typ 1.2 V, max 1.4 V |
| Peak Forward Voltage | max 3.0 V |
| Reverse Current | max 10 uA |
| Input Capacitance | typ 30 pF, max 250 pF |
| Collector-Emitter Dark Current | max 100 nA |
| Collector-Emitter Breakdown Voltage | min 80 V |
| Emitter-Collector Breakdown Voltage | min 7 V |
| Collector Current | min 2.5 mA, max 30 mA |
| Current Transfer Ratio | min 50 %, max 600 % |
| Collector-Emitter Saturation Voltage | typ 0.1 V, max 0.2 V |
| Isolation Resistance | min 1×10^12 ohm |
| Isolation Current | max 2 uA |
| Floating Capacitance | typ 0.6 pF, max 1.0 pF |
| Cut-off Frequency | typ 80 kHz |
| Turn On Time | typ 4 us, max 18 us |
| Turn Off Time | typ 3 us, max 18 us |
| CTR Rank A | 80-160 % |
| CTR Rank B | 130-260 % |
| CTR Rank C | 200-400 % |
| CTR Rank D | 300-600 % |
| CTR No Mark | 80-650 % |
| Reflow Preheat Temperature | 150-200 °C |
| Reflow Preheat Time | 60-120 s |
| Reflow Ramp-Up Rate | 3 °C/s |
| Reflow Liquidus Temperature | 217 °C |
| Reflow Time Above Liquidus | 60-150 s |
| Reflow Peak Temperature | 260 °C |
| Reflow Peak Dwell Time | 30 s |
| Reflow Ramp-Down Rate | 6 °C/s |
| Reflow Cycle Limit | No more than 3 times |
| Wave Solder Average Ramp-Up Rate | ~200 °C/s |
| Wave Solder Heating Rate During Preheat | typ 1-2 °C/s, max 4 °C/s |
| Wave Solder Final Preheat Temperature | ~130 °C |
| Wave Solder Preheat Time | >60 s |
| Wave Solder Peak Temperature | 260 °C |
| Wave Solder Peak Time | 10 s |
| Wave Solder Ramp-Down Rate | max 5 °C/s |
| Hand Soldering Iron Temperature | 360 °C +5°C |
| Tape Reel Quantity | 3500 pcs/reel |
| Box Quantity | 7000 pcs/box |
| Carton Quantity | 70000 pcs/carton |
| Reel Diameter | 330 mm |
| Antistatic Bag Specification | 380 x 420 mm |
| Box Specification | 350 x 340 x 60 mm |
| Carton Specification | 365 x 330 x 370 mm |
| Tape Leader and Trailer | Leave 20 spaces at beginning and 50 spaces at end |
| Document Validity | Valid until Dec 31, 2026 |
| Datasheet Status | request_only |
Product Overview
XL357（X）-G is a XINGLIGHT phototransistor optocoupler in the LED category. It combines an input emitter and phototransistor output in an SOP4 case, with a molded compound flammability rating of UL 94V-0 and matte tin-plated leads specified for solderability per MIL-STD-202, Method 208.
The device is specified for 3750 Vrms input-to-output isolation under 40-60% RH AC test conditions for 1 minute. Output-side ratings include 80 V collector-emitter voltage, 7 V emitter-collector voltage, 50 mA collector current, and 150 mW collector power dissipation. Electrical characteristics include typ 1.2 V and max 1.4 V forward voltage at IF=20mA, max 100 nA collector-emitter dark current, and CTR ranks from 80-160 % through 300-600 %.
Assembly data covers reflow, wave soldering, and hand soldering limits. Packing data specifies 3500 pcs/reel, 7000 pcs/box, and 70000 pcs/carton for SOP4 reel packing. Application fit is centered on isolated signal transfer where CTR, isolation voltage, switching time, and SOP4 mounting format are design constraints.
Key Features
- Phototransistor optocoupler in SOP4 package
- 3750 Vrms input-to-output isolation rating
- Current transfer ratio ranges from 80-650 %
- Collector-emitter breakdown voltage is at least 80 V
- Operating temperature range is -55 to +110 °C
- UL 94V-0 molding compound flammability rating
- Matte tin-plated leads for MIL-STD-202 solderability
- Typical cut-off frequency is 80 kHz
- Typical turn-on time is 4 us
- 3500 pcs supplied per tape and reel
Typical Applications
- Isolated signal transfer
- Controller input isolation
- Logic output isolation
- Industrial control interfaces
- Measurement interface isolation
- Low-power transistor output coupling
- SOP4 surface-mount assemblies
Procurement Notes
When requesting a quote for XL357（X）-G, buyers should confirm the manufacturer, package or case, required quantity, target date code, compliance documents, packing method, destination country and expected delivery schedule.
If alternatives are acceptable, buyers should share the approved vendor list, required electrical or optical limits, package constraints and qualification requirements. Any alternative part should be reviewed by the buyer's engineering team before production use.
For LED and optoelectronic sourcing, brightness bin, wavelength or color temperature bin, forward voltage range, viewing angle, moisture sensitivity level and soldering process limits may affect final selection, availability and lead time.
FAQ
What package is used for XL357（X）-G?
XL357（X）-G is specified with an SOP4 case and SOP4 package. The ordering and packing data also refer to SOP4 reel packing with 3500 pcs per reel.
What isolation rating does the device provide?
The datasheet facts list 3750 Vrms input-to-output isolation. A separate thermal characteristics entry specifies 3750 Vrms under 40-60% RH, AC for 1 minute, with 5000 V rated impulse isolation voltage.
What CTR ranges are specified for this optocoupler?
The feature statement lists 80-650 % CTR at IF=5mA and VCE=5V. Electrical characteristics list min 50 % and max 600 % under IF=5mA, VCE=5V, and TA=25°C.
What soldering limits are stated for assembly?
Reflow peak temperature is 260 °C, with no more than 3 reflow cycles. Wave solder peak temperature is 260 °C for 10 s, and hand soldering is listed as 360 °C +5°C within 3 seconds.
Technical Review & Sourcing Note
Prepared by LDeepAI Component Sourcing Team. Reviewed for RFQ, documentation and alternative sourcing use. Last updated: July 1, 2026.
This page is based on manufacturer datasheet information and LDeepAI sourcing review. Specifications should be verified against the official manufacturer datasheet before final procurement or design approval. Final electrical, optical and reliability approval should be confirmed by the buyer's engineering team.