Specifications
| Type | Description |
|---|---|
| Part Number | XL844 |
| Manufacturer | XINGLIGHT |
| Product Type | SMD LED |
| Category | LED |
| Package / Case | DIP-16, SMD-16 |
| Current Transfer Ratio | 20-300 %; IF=±1 mA, VCE=5 V |
| Isolation Voltage | 5000 Vrms; 40-60% RH, AC for 1 minute |
| Collector-Emitter Breakdown Voltage | >=80 V; IC=0.1 mA, IF=0 |
| Operating Temperature | -55 to +100 °C; maximum ratings |
| Operating Temperature Feature | -55 to +110 °C; features section |
| Forward Current | ±60 mA; TA=25°C unless otherwise specified |
| Input Power Dissipation | 100 mW; TA=25°C unless otherwise specified |
| Input Power Dissipation Derating Factor | 2.9 mW/°C; above Ta=100°C |
| Input Thermal Resistance Junction-Ambient | 325 °C/W; TA=25°C unless otherwise specified |
| Input Thermal Resistance Junction-Case | 200 °C/W; TA=25°C unless otherwise specified |
| Output Power Dissipation | 150 mW; TA=25°C unless otherwise specified |
| Output Collector Current | 50 mA; TA=25°C unless otherwise specified |
| Collector-Emitter Voltage | 80 V; maximum rating, TA=25°C unless otherwise specified |
| Emitter-Collector Voltage | 7 V; maximum rating, TA=25°C unless otherwise specified |
| Total Power Dissipation | 200 mW; TA=25°C unless otherwise specified |
| Storage Temperature Range | -55 to +125 °C; maximum ratings |
| Soldering Temperature | 260 °C; for 10 seconds |
| Forward Voltage | typ 1.2 V, max 1.4 V; IF=±20 mA, TA=25°C |
| Input Terminal Capacitance | typ 30 pF, max 250 pF; V=0, f=1 kHz, TA=25°C |
| Collector-Emitter Dark Current | max 100 nA; VCE=20 V, IF=0, TA=25°C |
| Emitter-Collector Breakdown Voltage | min 7 V; IE=10 μA, IF=0, TA=25°C |
| Collector-Emitter Saturation Voltage | typ 0.1 V, max 0.2 V; IF=±20 mA, IC=1 mA, TA=25°C |
| Isolation Resistance | min 5x10^10 Ω, typ 1x10^11 Ω; DC500 V, 40-60% RH, TA=25°C |
| Floating Capacitance | typ 0.6 pF, max 1.0 pF; V=0, f=1 MHz, TA=25°C |
| Cut-off Frequency | typ 80 kHz; VCE=5 V, IC=2 mA, RL=100 Ω, -3 dB, TA=25°C |
| Rise Time | max 18 μs; VCE=2 V, RL=100 Ω, IC=2 mA, TA=25°C |
| Fall Time | max 18 μs; VCE=2 V, RL=100 Ω, IC=2 mA, TA=25°C |
| CTR Rank A | 50-150 %; IF=±1 mA, VCE=5 V |
| CTR Rank B | 100-300 %; IF=±1 mA, VCE=5 V |
| CTR No Mark Rank | 20-300 %; IF=±1 mA, VCE=5 V |
| Package Shipping Quantity | 20 pcs/tube; XL844 DIP-16 and XL844S SMD-16 |
| Tube Box Quantity | 500 pcs/box; DIP-16/SMD-16 tube packing |
| Carton Quantity | 6000 pcs/carton; DIP-16/SMD-16 tube packing |
| Reflow Preheat Temperature | 150-200 °C; reflow soldering profile |
| Reflow Preheat Time | 60-120 s; reflow soldering profile |
| Reflow Liquidus Temperature | 217 °C; reflow soldering profile |
| Reflow Peak Temperature | 260 °C; reflow soldering profile, no more than three times |
| Datasheet Status | request_only |
Product Overview
The XL844 is a XINGLIGHT phototransistor optocoupler in the LED category. It uses DIP-16 and SMD-16 package cases, with ordering and packing information covering XL844 DIP-16 and XL844S SMD-16 tube packing at 20 pcs/tube, 500 pcs/box, and 6000 pcs/carton.
Electrical characteristics include a 20-300% current transfer ratio at IF=±1 mA and VCE=5 V, with CTR ranks A at 50-150%, B at 100-300%, and no-mark rank at 20-300%. Isolation data includes 5000 Vrms for 1 minute, minimum 5x10^10 Ω isolation resistance, typical 1x10^11 Ω isolation resistance, and 0.6 pF typical floating capacitance.
Input and output limits include ±60 mA forward current, 100 mW input power dissipation, 150 mW output power dissipation, 50 mA output collector current, 80 V collector-emitter voltage, and 7 V emitter-collector voltage. Timing and frequency data specify 80 kHz typical cut-off frequency and maximum 18 μs rise and fall times.
Assembly data includes 260 °C soldering temperature for 10 seconds and a reflow profile with 150-200 °C preheat, 60-120 s preheat time, 217 °C liquidus temperature, and 260 °C peak temperature for no more than three times.
Key Features
- Phototransistor optocoupler in DIP-16 and SMD-16 packages
- 20-300% CTR at IF=±1 mA and VCE=5 V
- 5000 Vrms isolation voltage for one minute
- Collector-emitter breakdown voltage at least 80 V
- -55 to +100 °C maximum-rated operating temperature
- ±60 mA forward current maximum rating
- 50 mA output collector current maximum rating
- Typical 80 kHz cut-off frequency
- Maximum 18 μs rise and fall times
- 260 °C reflow peak, no more than three times
Typical Applications
- Isolated signal coupling
- Phototransistor output interfaces
- DIP-16 optocoupler assemblies
- SMD-16 optocoupler assemblies
- 5 kVrms isolation circuits
- Low-frequency isolated interfaces
- Tube-packed production builds
Procurement Notes
When requesting a quote for XL844, 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 type of device is the XL844?
The XL844 is a XINGLIGHT phototransistor optocoupler in the LED category. The extracted package information identifies DIP-16 and SMD-16 package cases for the device family.
What current transfer ratio does XL844 specify?
The datasheet facts list a 20-300% current transfer ratio at IF=±1 mA and VCE=5 V. Rank A is 50-150%, rank B is 100-300%, and the no-mark rank is 20-300% under the same condition.
What isolation voltage is specified for XL844?
The XL844 isolation voltage is specified as 5000 Vrms at 40-60% RH with AC applied for 1 minute. Isolation resistance is listed as minimum 5x10^10 Ω and typical 1x10^11 Ω at DC500 V.
What assembly temperature data is provided?
The datasheet facts list 260 °C soldering temperature for 10 seconds. The reflow profile includes 150-200 °C preheat, 60-120 s preheat time, 217 °C liquidus temperature, and 260 °C peak temperature for no more than three times.
Technical Review & Sourcing Note
Prepared by LDeepAI Component Sourcing Team. Reviewed for RFQ, documentation and alternative sourcing use. Last updated: July 3, 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.