J176 JFET P-Channel 30V TO-92-3 Equivalent & Substitute Parts

Part Overview

The J176 is a P-Channel JFET transistor rated for 30V operation in a TO-92-3 through-hole package. This component is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and production continuity. The J176 delivers 400 mW maximum power dissipation with 250 Ohms drain-source on-resistance and is suitable for analog switching and amplification applications requiring P-channel depletion-mode operation.

Substiute Parts

J176,126

NXP USA Inc.In Stock: 1155J176,126 Datasheet

Current PartRFQ

J175-D26Z

Fairchild SemiconductorIn Stock: 20165J175-D26Z Datasheet

MFR RecommendedRFQ

J176-D74Z

onsemiIn Stock: 78196J176-D74Z Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the J176 is determined by the following critical parameters:

• P-Channel JFET topology
• 30V breakdown voltage rating (V(BR)GSS)
• TO-92-3 through-hole package compatibility
• Drain-source voltage (Vdss) of 30V or greater
• Operating temperature range supporting 150°C maximum junction temperature

The substitute parts J175-D26Z and J176-D74Z meet these core electrical and mechanical requirements. Both maintain P-channel operation, 30V voltage ratings, and TO-92-3 packaging. The J176-D74Z is a direct manufacturer variant with identical electrical characteristics to the main part. The J175-D26Z represents a functional alternative with modified drain current and cutoff voltage specifications within acceptable substitution parameters.

Parameter Comparison

Engineering Selection Recommendations

The J176-D74Z from onsemi is the primary substitute option. It maintains identical electrical characteristics to the J176 (2 mA Idss, 1V VGS off, 250 Ohms RDS(On)) while offering active product status and ROHS3 compliance. The J176-D74Z is available in cut tape packaging with substantial inventory (78,100 pieces), ensuring supply continuity.

The J175-D26Z from Fairchild Semiconductor serves as a secondary alternative. While it exhibits higher drain current (7 mA) and lower on-resistance (125 Ohms), it maintains the 30V voltage rating and TO-92-3 package. The J175-D26Z provides an extended operating temperature range (-55°C to 150°C) and is actively produced with high inventory availability (20,100 pieces).

Both substitutes are REACH unaffected and classified under ECCN EAR99, matching the regulatory profile of the original J176.

Frequently Asked Questions (FAQ)

Q: Can the J175-D26Z replace the J176 in all applications?

A: The J175-D26Z is electrically compatible for P-channel 30V JFET applications. However, the higher drain current (7 mA versus 2 mA) and lower on-resistance (125 Ohms versus 250 Ohms) result in different circuit behavior. Circuit validation is required for applications sensitive to these parameter variations.

Q: Is the J176-D74Z a direct replacement?

A: The J176-D74Z maintains identical electrical specifications to the J176 (Idss, VGS off, RDS(On)) and shares the same TO-92-3 package. It is the recommended substitute for direct pin-compatible replacement.

Q: Are all substitute parts available in the same packaging?

A: All three parts use TO-92-3 through-hole packaging with TO-226-3 case designation. The J176-D74Z is supplied in cut tape format, while the J175-D26Z is available in bulk packaging. Both are compatible with standard through-hole assembly processes.

Q: What is the impact of the lower power rating on the J175-D26Z and J176-D74Z?

A: Both substitutes are rated for 350 mW maximum power dissipation compared to the J176's 400 mW. Applications operating near the 400 mW limit require thermal analysis to confirm the 350 mW rating is sufficient.

Q: Do the substitute parts meet the same compliance standards?

A: The J176-D74Z is ROHS3 compliant and REACH unaffected, matching the J176. The J175-D26Z compliance status is not specified in available documentation. Verify compliance requirements for your specific application before selection.