NJM555D Equivalent & Substitute Parts

Part Overview

The NJM555D is a 555 Type Timer/Oscillator (Single) IC manufactured by Nisshinbo Micro Devices Inc., packaged in 8-DIP configuration. This component functions as a general-purpose timing and oscillation circuit element suitable for clock generation, pulse generation, and timing applications. The NJM555D is classified as obsolete product status, necessitating identification of active equivalent alternatives to maintain design continuity and ensure long-term component availability for production and maintenance applications.

Substiute Parts

NJM555D

Nisshinbo Micro Devices Inc.In Stock: 17197NJM555D Datasheet

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NE555P

Texas InstrumentsIn Stock: 156362NE555P Datasheet

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SA555P

Texas InstrumentsIn Stock: 47037SA555P Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the NJM555D is determined by strict alignment of the following critical parameters:

Functional Type: All substitute parts must be 555 Type Timer/Oscillator (Single) ICs to maintain circuit functionality and pin compatibility.

Package Configuration: All substitute parts must use 8-DIP (0.300", 7.62mm) package with Through Hole mounting to ensure mechanical and electrical compatibility with existing PCB designs.

Electrical Specifications: Substitute parts must support the supply voltage range of 4.5V ~ 16V and operate at 10 mA supply current to function within the original design parameters.

Compliance Requirements: Substitute parts must maintain RoHS and REACH compliance status to satisfy regulatory and procurement requirements.

The NJM555D has two identified substitute parts: NE555P and SA555P, both manufactured by Texas Instruments. Both substitutes meet all critical parameter requirements for direct replacement.

Parameter Comparison

Engineering Selection Recommendations

NE555P Selection: The NE555P is an active product from Texas Instruments with ROHS3 compliance. This substitute is suitable for applications operating within the 0°C ~ 70°C temperature range. The NE555P provides continuity for designs not requiring extended low-temperature operation below 0°C.

SA555P Selection: The SA555P is an active product from Texas Instruments with ROHS3 compliance and operating temperature range of -40°C ~ 85°C, matching the original NJM555D specification. The SA555P is the preferred substitute for applications requiring full temperature range compatibility and extended environmental performance.

Both substitutes maintain identical supply voltage, current, and package specifications. Selection between NE555P and SA555P depends on the specific operating temperature requirements of the application. For designs requiring the full -40°C ~ 85°C operating range, SA555P is the direct equivalent. For applications limited to 0°C ~ 70°C operation, either substitute is acceptable.

Frequently Asked Questions (FAQ)

Q: Can NE555P and SA555P be used interchangeably with NJM555D?

A: Both NE555P and SA555P are pin-compatible and functionally equivalent 555 Type Timer/Oscillator ICs in 8-DIP packages. Direct substitution is possible at the component level. Operating temperature range differs between the two substitutes; SA555P matches the original -40°C ~ 85°C range, while NE555P operates 0°C ~ 70°C.

Q: What is the primary difference between NE555P and SA555P?

A: The primary difference is operating temperature range. NE555P operates 0°C ~ 70°C, while SA555P operates -40°C ~ 85°C. Both maintain identical supply voltage (4.5V ~ 16V), current (10 mA), and 8-DIP package configuration.

Q: Are there any compliance differences between the substitutes?

A: All three parts (NJM555D, NE555P, SA555P) maintain REACH Unaffected status. RoHS compliance differs: NJM555D is RoHS Compliant, while both Texas Instruments substitutes are ROHS3 Compliant. ROHS3 represents current RoHS directive compliance.

Q: Does package type affect substitution?

A: Package type is a critical substitution parameter. All three parts use 8-DIP (0.300", 7.62mm) Through Hole packages. No package conversion is required for direct substitution.

Q: Which substitute should be selected for new designs?

A: For new designs, either NE555P or SA555P is acceptable based on operating temperature requirements. SA555P is recommended for applications requiring the full -40°C ~ 85°C temperature range. Both are active products with established supply chains.