NJM78LR05DD Linear Voltage Regulator Equivalent & Substitute Parts

Part Overview

The NJM78LR05DD is a linear voltage regulator IC manufactured by Nisshinbo Micro Devices Inc., classified as a Power Management (PMIC) component. This device provides a fixed positive 5V output with 100mA current capacity in an 8-DIP through-hole package. The main part number NJM78LR05DD carries an obsolete product status, making identification of active equivalent alternatives essential for ongoing design support and procurement continuity.

Substiute Parts

NJM78LR05DD

Nisshinbo Micro Devices Inc.In Stock: 840NJM78LR05DD Datasheet

Current PartRFQ

NJM78LR05DD#

Nisshinbo Micro Devices Inc.In Stock: 929NJM78LR05DD# Datasheet

DirectRFQ

NJM78LR05BD#

Nisshinbo Micro Devices Inc.In Stock: 980NJM78LR05BD# Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the NJM78LR05DD is determined by strict equivalence across the following electrical and mechanical parameters:

Critical Matching Parameters:

• Output voltage: 5V fixed
• Output current capacity: 100mA
• Input voltage maximum: 18V
• Package type: 8-DIP (0.300", 7.62mm)
• Mounting type: Through Hole
• Control features: Reset function
• Protection features: Over Temperature and Short Circuit protection
• Operating temperature range: -40°C ~ 85°C
• Quiescent current: 3.4 mA
• PSRR: 79dB (120Hz)

All substitute parts listed maintain identical electrical specifications and mechanical compatibility with the original NJM78LR05DD, ensuring direct functional replacement in circuit applications.

Parameter Comparison

Engineering Selection Recommendations

NJM78LR05DD# (Direct Manufacturer Equivalent): This part is the direct equivalent with active product status. It maintains all electrical and mechanical specifications identical to the obsolete NJM78LR05DD. The primary advantages include RoHS compliance and improved moisture sensitivity level (MSL 1 vs. MSL 2), providing superior long-term reliability and environmental compliance. Packaging is supplied in tube format.

NJM78LR05BD# (Parametric Equivalent): This part is a parametric equivalent offering identical electrical performance and mechanical compatibility. It shares the same active product status, RoHS compliance, and MSL 1 rating as the NJM78LR05DD#. The suffix variation (BD vs. DD) indicates a different manufacturing batch or date code designation while maintaining full functional equivalence. Packaging is supplied in tube format.

Both substitute parts are manufactured by Nisshinbo Micro Devices Inc. and provide direct functional replacement for the obsolete NJM78LR05DD in all circuit applications requiring a 5V, 100mA linear voltage regulator with reset and protection features in an 8-DIP through-hole package.

Frequently Asked Questions (FAQ)

Q: Can NJM78LR05DD# and NJM78LR05BD# be used interchangeably with the original NJM78LR05DD?

A: Yes. Both substitute parts maintain identical electrical specifications (5V output, 100mA current, 18V maximum input, 3.4mA quiescent current, 79dB PSRR, reset control, and over-temperature/short-circuit protection) and mechanical compatibility (8-DIP through-hole package, 0.300" spacing). They are direct functional replacements.

Q: What is the difference between NJM78LR05DD# and NJM78LR05BD#?

A: Both parts are parametric equivalents with identical electrical and mechanical specifications. The suffix variation (DD vs. BD) represents different manufacturing designations. Both are active products with RoHS compliance and MSL 1 rating. Selection between them is based on availability and procurement preference.

Q: Why is the original NJM78LR05DD marked as obsolete?

A: The original NJM78LR05DD carries obsolete status, indicating it is no longer in active production. The substitute parts NJM78LR05DD# and NJM78LR05BD# are active equivalents that provide continued design support and procurement availability.

Q: Are there any compliance differences between the main part and substitutes?

A: Yes. The original NJM78LR05DD is RoHS non-compliant with MSL 2 (1 Year). Both substitute parts are RoHS compliant with MSL 1 (Unlimited), providing improved environmental compliance and extended moisture sensitivity protection.

Q: What is the operating temperature range for these regulators?

A: All three parts operate across -40°C to 85°C, ensuring compatibility across industrial and commercial temperature specifications.

Q: Are the substitute parts available in the same package format?

A: Yes. All parts use the 8-DIP (0.300", 7.62mm) through-hole package. The substitute parts are supplied in tube packaging format.