NCP1012AP133G Equivalent & Substitute Parts

Part Overview

The NCP1012AP133G is an offline switch flyback converter IC manufactured by onsemi, designed for isolated power management applications. This component operates at 130kHz switching frequency with 19W power capacity and 700V breakdown voltage rating. The part is classified as obsolete, necessitating identification of equivalent alternatives for new designs or production continuity. Substitute parts must maintain functional compatibility across isolated flyback topology, voltage specifications, and thermal operating ranges while considering current product availability and status.

Substiute Parts

NCP1012AP133G

onsemiIn Stock: 18992NCP1012AP133G Datasheet

Current PartRFQ

NCP1075AAP100G

onsemiIn Stock: 908NCP1075AAP100G Datasheet

SimilarRFQ

NCP1012AP065G

onsemiIn Stock: 9649NCP1012AP065G Datasheet

Parametric EquivalentRFQ

NCP1011AP100G

onsemiIn Stock: 20420NCP1011AP100G Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the NCP1012AP133G is determined by the following critical parameters:

Primary Compatibility Criteria:

• Topology: Isolated Flyback
• Package: 8-DIP (0.300", 7.62mm), 7 Leads / 7-PDIP
• Voltage - Breakdown: 700V
• Output Isolation: Isolated
• Internal Switch(s): Yes
• Mounting Type: Through Hole

Secondary Compatibility Parameters:

• Voltage - Supply (Vcc/Vdd): 8.5V ~ 10V range
• Duty Cycle: 67%
• Power (Watts): 19 W
• Operating Temperature: -40°C ~ 150°C (TJ)
• Fault Protection: Over Load, Over Temperature, Over Voltage

Substitute parts are grouped based on adherence to these parameters. Variations in switching frequency (130kHz, 100kHz, 65kHz) and power output are acceptable within the NCP101x/NCP107x series, provided the core electrical and mechanical specifications align with the main part's design envelope.

Parameter Comparison

Engineering Selection Recommendations

NCP1075AAP100G is the primary recommended substitute. This part maintains all critical electrical parameters (700V breakdown, isolated topology, 7-PDIP package) and is currently in active product status with higher inventory availability (824 Pcs). The extended supply voltage range (6.5V ~ 20V) provides broader application flexibility compared to the main part's 8.5V ~ 10V specification. Enhanced fault protection features (current limiting, short circuit protection) exceed the main part's protection set. Operating temperature range is reduced to -40°C ~ 125°C, which is acceptable for most applications. ROHS3 compliance and superior MSL rating (Not Applicable) support long-term storage and handling.

NCP1012AP065G serves as a parametric equivalent for applications requiring identical supply voltage and operating temperature specifications. This part maintains 19W power capacity and 67% duty cycle matching the main part. Product status is obsolete, but inventory availability is substantial (9583 Pcs). Switching frequency reduction to 65kHz may require transformer design adjustments.

NCP1011AP100G provides compatibility for designs tolerant of 100kHz switching frequency. This part matches the main part's 19W power capacity, 67% duty cycle, and full operating temperature range (-40°C ~ 150°C). Product status is obsolete with high inventory (20400 Pcs). MSL rating of 3 (168 Hours) requires controlled storage conditions.

All substitute parts maintain ROHS3 compliance and EAR99 export classification consistent with the main part.

Frequently Asked Questions (FAQ)

Q: Can NCP1075AAP100G directly replace NCP1012AP133G in existing designs?

A: Direct pin-compatible replacement is supported. The NCP1075AAP100G maintains identical 8-DIP package configuration and 7-lead pinout. Design verification is required for applications sensitive to switching frequency variation (100kHz vs. 130kHz) or operating temperature ceiling (125°C vs. 150°C).

Q: What is the primary difference between NCP1012AP133G and NCP1012AP065G?

A: Both parts share identical electrical specifications (19W, 700V, 67% duty cycle, -40°C ~ 150°C operating range) and package configuration. The distinction is switching frequency: 130kHz versus 65kHz. Lower frequency operation in the 065G variant may reduce EMI but requires transformer design adjustment.

Q: Why is NCP1075AAP100G recommended over NCP1011AP100G?

A: NCP1075AAP100G holds active product status with superior inventory availability and enhanced fault protection (current limiting, short circuit detection). NCP1011AP100G is obsolete with higher MSL sensitivity (3 vs. Not Applicable), requiring stricter moisture control during storage and handling.

Q: Are all substitute parts through-hole mounted?

A: Yes. All listed substitute parts (NCP1075AAP100G, NCP1012AP065G, NCP1011AP100G) use through-hole mounting in 8-DIP package configuration, maintaining PCB layout compatibility with the main part.

Q: What compliance certifications apply to substitute parts?

A: All substitute parts maintain ROHS3 compliance and REACH unaffected status, consistent with the main part. Export classification remains EAR99 for all listed alternatives.

Q: Is operating temperature range a critical selection factor?

A: Operating temperature range should be evaluated against application requirements. NCP1075AAP100G operates to 125°C (versus 150°C for the main part). Applications requiring full -40°C ~ 150°C range should select NCP1012AP065G or NCP1011AP100G.