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J111_D27Z JFET N-Channel Equivalent & Substitute Parts
Part Overview
The J111_D27Z is an N-Channel JFET transistor manufactured by onsemi, rated for 35 V breakdown voltage with 625 mW power dissipation in a TO-92-3 through-hole package. This device is classified as obsolete, making equivalent substitute parts necessary for ongoing design support and component procurement. The J111_D27Z maintains electrical and mechanical compatibility with active production variants within the J111 series.
Substiute Parts
Key Parameters
| Parameter | Value | Unit |
|---|---|---|
| FET Type | N-Channel | — |
| Voltage - Breakdown (V(BR)GSS) | 35 | V |
| Current - Drain (Idss) @ Vds (Vgs=0) | 20 mA @ 15 V | mA |
| Voltage - Cutoff (VGS off) @ Id | 3 V @ 1 µA | V |
| Resistance - RDS(On) | 30 | Ohms |
| Power - Max | 625 | mW |
| Operating Temperature | -55 to 150 | °C (TJ) |
| Mounting Type | Through Hole | — |
| Package / Case | TO-226-3, TO-92-3 (TO-226AA) | — |
Substitute Part Grouping Explanation
Substitution of the J111_D27Z is determined by electrical parameter equivalence and mechanical compatibility. The primary substitute is the J111 (bulk packaging variant), which maintains identical electrical specifications across all critical parameters: N-Channel configuration, 35 V breakdown voltage, 20 mA drain current at 15 V, 3 V cutoff voltage, 30 Ohm on-resistance, and 625 mW power rating. Both devices operate across the same temperature range (-55°C to 150°C) and use the TO-92-3 through-hole package. The key differentiator is product status: J111_D27Z is obsolete while J111 is active production, making J111 the direct functional equivalent for new designs and ongoing procurement.
Parameter Comparison
| Parameter | J111_D27Z (Main Part) | J111 (Substitute) | Match |
|---|---|---|---|
| Manufacturer | onsemi | onsemi | Yes |
| FET Type | N-Channel | N-Channel | Yes |
| Voltage - Breakdown (V(BR)GSS) | 35 V | 35 V | Yes |
| Current - Drain (Idss) @ Vds (Vgs=0) | 20 mA @ 15 V | 20 mA @ 15 V | Yes |
| Voltage - Cutoff (VGS off) @ Id | 3 V @ 1 µA | 3 V @ 1 µA | Yes |
| Resistance - RDS(On) | 30 Ohms | 30 Ohms | Yes |
| Power - Max | 625 mW | 625 mW | Yes |
| Operating Temperature | -55°C ~ 150°C (TJ) | -55°C ~ 150°C (TJ) | Yes |
| Mounting Type | Through Hole | Through Hole | Yes |
| Package / Case | TO-226-3, TO-92-3 (TO-226AA) | TO-226-3, TO-92-3 (TO-226AA) | Yes |
| Product Status | Obsolete | Active | Functional Equivalent |
Engineering Selection Recommendations
The J111 serves as the direct substitute for the J111_D27Z based on complete electrical and mechanical parameter alignment. Selection of J111 is supported by its active production status, ensuring long-term availability and supply chain continuity. Both devices carry REACH Unaffected compliance and EAR99 export classification. The J111 in bulk packaging provides equivalent performance with significantly higher inventory availability (95,300 pcs vs. 967 pcs for the obsolete J111_D27Z variant). For applications currently using J111_D27Z, transition to J111 requires no circuit modifications, as all electrical characteristics and package pinouts are identical.
Frequently Asked Questions (FAQ)
Q: Can J111 replace J111_D27Z in existing designs? A: Yes. The J111 is electrically and mechanically identical to J111_D27Z. All electrical parameters, operating temperature range, and TO-92-3 package pinout are equivalent. No circuit redesign is required.
Q: What is the difference between J111_D27Z and J111? A: The primary difference is product status and packaging format. J111_D27Z is obsolete; J111 is active production. J111_D27Z uses a specific device package designation, while J111 is supplied in bulk packaging. Electrical specifications are identical.
Q: Are there any compliance differences between these parts? A: Both J111_D27Z and J111 are REACH Unaffected and classified as EAR99. The J111 carries RoHS3 compliance certification, while J111_D27Z does not specify RoHS status. Both are suitable for industrial and commercial applications.
Q: Is the TO-92-3 package pinout identical between J111_D27Z and J111? A: Yes. Both devices use the TO-226-3 / TO-92-3 (TO-226AA) package with identical pin configuration and lead spacing. Direct PCB footprint compatibility is confirmed.
Q: What inventory considerations apply to these parts? A: J111_D27Z has limited remaining inventory (967 pcs). J111 is in active production with substantially higher availability (95,300 pcs). For new procurement, J111 is the recommended choice for supply chain reliability.
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