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SSL2102T/N1,518 LED Driver IC Equivalent & Substitute Parts
Part Overview
The SSL2102T/N1,518 is an AC DC offline switcher LED driver IC manufactured by NXP USA Inc., designed for offline power management applications with Triac dimming capability. This 20-SO packaged component integrates a 2A internal switch and operates across a 8.5V to 40V supply range, making it suitable for LED lighting applications requiring offline conversion and dimming control.
The SSL2102T/N1,518 is currently discontinued at DiGi Electronics. Equivalent substitute parts are available from active manufacturers including Monolithic Power Systems, onsemi, and Texas Instruments, offering comparable or enhanced functionality for direct replacement or design migration scenarios.
Substiute Parts
Key Parameters
| Parameter | SSL2102T/N1,518 |
|---|---|
| Manufacturer | NXP USA Inc. |
| Category | Power Management (PMIC) |
| Type | AC DC Offline Switcher |
| Topology | Flyback, Step-Down (Buck) |
| Internal Switch(s) | Yes |
| Number of Outputs | 1 |
| Voltage - Supply (Min) | 8.5V |
| Voltage - Supply (Max) | 40V |
| Current - Output / Channel | 2A (Switch) |
| Frequency | 100kHz |
| Dimming | Triac |
| Operating Temperature | -40°C ~ 100°C (TA) |
| Package / Case | 20-SOIC (0.295", 7.50mm Width) |
| RoHS Status | ROHS3 Compliant |
| Moisture Sensitivity Level (MSL) | 3 (168 Hours) |
| Product Status | Discontinued at DiGi Electronics |
Substitute Part Grouping Explanation
Substitute parts for the SSL2102T/N1,518 are grouped based on the following critical parameters that determine functional equivalence:
Primary Substitution Criteria:
- AC DC Offline Switcher topology classification
- Single output configuration
- Triac or PWM dimming capability
- Surface mount packaging compatibility
- Operating temperature range overlap
- RoHS3 compliance and regulatory alignment
Grouping Logic:
Group 1: Direct Triac Dimming Substitutes (Highest Compatibility) Parts maintaining Triac dimming and similar supply voltage ranges: TPS92001DGKR, TPS92001DR, TPS92075D/NOPB, TPS92075DR/NOPB. These preserve the original Triac dimming interface required for phase-cut dimmer compatibility.
Group 2: PWM Dimming Alternatives (Functional Equivalence) Parts offering PWM or Analog dimming with comparable supply voltage ranges: MP4653GY, MP4653GY-Z. These provide alternative dimming control suitable for applications where PWM dimming is acceptable.
Group 3: Flyback Topology Alternatives (Extended Compatibility) Parts maintaining Flyback topology with flexible dimming options: NCL30030B2DR2G, NCL30186BDR2G. These support similar power conversion architectures with varying package and feature sets.
Parameter Comparison
| Parameter | SSL2102T/N1,518 | MP4653GY-Z | NCL30030B2DR2G | NCL30186BDR2G | TPS92001DGKR | TPS92001DR | TPS92075D/NOPB | TPS92075DR/NOPB |
|---|---|---|---|---|---|---|---|---|
| Manufacturer | NXP USA Inc. | Monolithic Power Systems Inc. | onsemi | onsemi | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments |
| Type | AC DC Offline Switcher | AC DC Offline Switcher | AC DC Offline Switcher | AC DC Offline Switcher | AC DC Offline Switcher | AC DC Offline Switcher | AC DC Offline Switcher | AC DC Offline Switcher |
| Topology | Flyback, Step-Down (Buck) | Half-Bridge | Flyback | Flyback, SEPIC, Step-Down (Buck), Step-Up (Boost) | Flyback, Step-Down (Buck) | Flyback, Step-Down (Buck) | Step-Down (Buck), Step-Up (Boost) | Step-Down (Buck), Step-Up (Boost) |
| Internal Switch(s) | Yes | No | No | No | No | No | No | No |
| Number of Outputs | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 |
| Voltage - Supply (Min) | 8.5V | 9V | 9V | 8.8V | — | — | 11V | 11V |
| Voltage - Supply (Max) | 40V | 30V | 30V | 25.5V | 21V | 21V | 18V | 18V |
| Frequency | 100kHz | — | — | — | 100kHz | 100kHz | — | — |
| Dimming | Triac | Analog, PWM | — | Analog, PWM | Triac | Triac | Triac | Triac |
| Operating Temperature | -40°C ~ 100°C (TA) | -40°C ~ 125°C (TJ) | -40°C ~ 125°C (TJ) | -40°C ~ 125°C (TJ) | -40°C ~ 105°C (TJ) | -40°C ~ 105°C (TJ) | -40°C ~ 125°C (TJ) | -40°C ~ 125°C (TJ) |
| Package / Case | 20-SOIC (0.295", 7.50mm Width) | 20-SOIC (0.295", 7.50mm Width) | 16-SOIC (0.154", 3.90mm Width) | 10-SOP (0.154", 3.90mm Width) | 8-TSSOP, 8-MSOP (0.118", 3.00mm Width) | 8-SOIC (0.154", 3.90mm Width) | 8-SOIC (0.154", 3.90mm Width) | 8-SOIC (0.154", 3.90mm Width) |
| RoHS Status | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant |
| Product Status | Discontinued at DiGi Electronics | Active | Active | Active | Last Time Buy | Last Time Buy | Active | Active |
Engineering Selection Recommendations
For Direct Replacement with Triac Dimming Preservation:
Select TPS92075DR/NOPB or TPS92075D/NOPB (Texas Instruments, Active status) when maintaining Triac phase-cut dimmer compatibility is essential. Both parts retain Triac dimming control and operate within 11V to 18V supply range. The tape & reel packaged TPS92075DR/NOPB is preferred for production volume applications with 2293 units in stock. Operating temperature extends to -40°C ~ 125°C (TJ), exceeding the original part's thermal range.
For Package-Compatible Substitution:
MP4653GY-Z (Monolithic Power Systems, Active status) maintains the 20-SOIC package footprint identical to SSL2102T/N1,518, enabling direct PCB layout compatibility. This part operates within 9V to 30V supply range and provides PWM/Analog dimming alternatives. With 63,800 units in stock and tape & reel packaging, this option supports high-volume production. Operating temperature range of -40°C ~ 125°C (TJ) provides thermal margin.
For Extended Supply Voltage Range:
NCL30186BDR2G (onsemi, Active status) supports the widest topology flexibility (Flyback, SEPIC, Step-Down, Step-Up) with supply range 8.8V to 25.5V, closely matching the original 8.5V minimum. This part offers PWM/Analog dimming and operates at -40°C ~ 125°C (TJ). The 10-SOIC package requires PCB redesign but provides compact integration with 37,800 units available.
For Last-Time-Buy Scenarios:
TPS92001DGKR and TPS92001DR (Texas Instruments, Last Time Buy status) maintain Triac dimming and Flyback/Buck topology alignment with the original part. Both operate at 100kHz switching frequency matching SSL2102T/N1,518. Supply voltage limited to 21V maximum and 5V fixed output. Inventory availability: TPS92001DGKR (55,100 units), TPS92001DR (855 units).
All substitute parts maintain ROHS3 compliance and regulatory alignment with the original component.
Frequently Asked Questions (FAQ)
Q: Can MP4653GY-Z directly replace SSL2102T/N1,518 on existing PCBs?
A: Yes, MP4653GY-Z maintains identical 20-SOIC package dimensions (0.295", 7.50mm Width) and pinout compatibility. However, the dimming interface differs: MP4653GY-Z uses PWM/Analog dimming instead of Triac phase-cut control. Verify that your dimming control circuit can generate PWM or analog control signals before substitution.
Q: What is the key difference between Triac and PWM dimming options?
A: Triac dimming (SSL2102T/N1,518, TPS92001DGKR, TPS92001DR, TPS92075D/NOPB, TPS92075DR/NOPB) interfaces directly with standard AC phase-cut dimmers used in residential and commercial lighting. PWM dimming (MP4653GY-Z, NCL30186BDR2G) requires digital or analog control signals and is typically used in dedicated LED driver circuits. Dimming method selection depends on your system architecture.
Q: Why do substitute parts have lower maximum supply voltages than SSL2102T/N1,518?
A: The SSL2102T/N1,518 supports 8.5V to 40V input range, while most substitutes limit to 18V to 30V maximum. This reflects different design topologies and target applications. For applications requiring the full 40V input range, verify that your actual operating voltage falls within the substitute part's specification before selection.
Q: Is NCL30186BDR2G suitable for designs currently using SSL2102T/N1,518?
A: NCL30186BDR2G offers extended topology support (Flyback, SEPIC, Step-Down, Step-Up) and PWM/Analog dimming, making it functionally capable. However, the 10-SOIC package differs from the original 20-SOIC, requiring PCB layout redesign. Supply voltage range (8.8V to 25.5V) closely matches the original minimum specification. Evaluate your specific topology requirements before migration.
Q: What is the inventory status for long-term production planning?
A: MP4653GY-Z (63,800 units) and NCL30186BDR2G (37,800 units) offer substantial inventory for production commitments. TPS92075DR/NOPB (2,293 units) and TPS92001DGKR (55,100 units) provide adequate stock for medium-volume applications. TPS92001DR (855 units) has limited availability. For discontinued parts like SSL2102T/N1,518, early transition to active-status substitutes is recommended.
Q: Are all substitute parts RoHS3 compliant?
A: Yes, all listed substitute parts maintain ROHS3 compliance matching the original SSL2102T/N1,518. All parts are also REACH Unaffected and classified under ECCN EAR99 with identical HTSUS code 8542.39.0001, ensuring regulatory and trade compliance equivalence.
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