BC560_J35Z Equivalent & Substitute Parts

Part Overview

The BC560_J35Z is a PNP bipolar junction transistor manufactured by onsemi, designed for small-signal switching and amplification applications. This device features a maximum collector current of 100 mA, collector-emitter breakdown voltage of 45 V, and a transition frequency of 150 MHz in a through-hole TO-92-3 package. The BC560_J35Z is classified as obsolete, making identification of equivalent substitute components necessary for ongoing design support, maintenance, and production continuity. Equivalent parts maintain identical electrical and mechanical specifications while offering active product status from alternative manufacturers.

Key Parameters

Parameter	Value	Unit
Transistor Type	PNP	—
Current - Collector (Ic) (Max)	100	mA
Voltage - Collector Emitter Breakdown (Max)	45	V
Vce Saturation (Max) @ Ib, Ic	650 mV @ 5 mA, 100 mA	—
Current - Collector Cutoff (Max)	15	nA
DC Current Gain (hFE) (Min) @ Ic, Vce	110 @ 2 mA, 5 V	—
Power - Max	500	mW
Frequency - Transition	150	MHz
Operating Temperature (TJ)	150	°C
Mounting Type	Through Hole	—
Package / Case	TO-92-3 (TO-226AA)	—
Moisture Sensitivity Level (MSL)	1 (Unlimited)	—

Substitute Part Grouping Explanation

Substitution of the BC560_J35Z is determined by strict equivalence across all critical electrical and mechanical parameters. The substitute part BC557ATA from Fairchild Semiconductor qualifies as a parametric equivalent based on the following criteria:

Electrical Parameter Equivalence:

Identical transistor type classification (PNP)
Matching maximum collector current (100 mA)
Identical collector-emitter breakdown voltage (45 V)
Matching saturation voltage characteristics (650 mV @ 5 mA, 100 mA)
Identical collector cutoff current (15 nA)
Matching DC current gain specification (110 @ 2 mA, 5 V)
Identical maximum power dissipation (500 mW)
Matching transition frequency (150 MHz)
Identical maximum operating junction temperature (150°C)

Mechanical Parameter Equivalence:

Identical through-hole mounting type
Identical package designation (TO-92-3, TO-226AA with formed leads)

The BC557ATA maintains active product status, ensuring continued availability and manufacturing support.

Parameter Comparison

Parameter	BC560_J35Z (onsemi)	BC557ATA (Fairchild Semiconductor)	Match
Transistor Type	PNP	PNP	✓
Current - Collector (Ic) (Max)	100 mA	100 mA	✓
Voltage - Collector Emitter Breakdown (Max)	45 V	45 V	✓
Vce Saturation (Max) @ Ib, Ic	650 mV @ 5 mA, 100 mA	650 mV @ 5 mA, 100 mA	✓
Current - Collector Cutoff (Max)	15 nA	15 nA	✓
DC Current Gain (hFE) (Min) @ Ic, Vce	110 @ 2 mA, 5 V	110 @ 2 mA, 5 V	✓
Power - Max	500 mW	500 mW	✓
Frequency - Transition	150 MHz	150 MHz	✓
Operating Temperature (TJ)	150°C	150°C	✓
Mounting Type	Through Hole	Through Hole	✓
Package / Case	TO-92-3 (TO-226AA)	TO-92-3 (TO-226AA)	✓
Product Status	Obsolete	Active	—

Engineering Selection Recommendations

The BC557ATA from Fairchild Semiconductor is a direct parametric equivalent to the obsolete BC560_J35Z. Selection of the BC557ATA is based on the following engineering factors:

Product Status: The BC560_J35Z carries obsolete status, limiting future availability and manufacturing support. The BC557ATA maintains active product status, ensuring supply chain continuity and long-term component availability.

Compliance and Certifications: Both components share identical ECCN (EAR99) and HTSUS (8541.21.0075) classifications, confirming equivalent regulatory and trade compliance profiles.

Electrical and Mechanical Compatibility: Complete parameter equivalence across all specified electrical characteristics (current, voltage, gain, frequency) and mechanical attributes (package, mounting type) ensures direct functional substitution without circuit redesign or performance degradation.

Moisture Sensitivity: The BC560_J35Z specifies MSL 1 (Unlimited), indicating no moisture sensitivity constraints during storage and handling. This classification applies to the substitute component as well.

Frequently Asked Questions (FAQ)

Q: Can the BC557ATA be used as a direct replacement for the BC560_J35Z without circuit modifications?

A: Yes. The BC557ATA is a parametric equivalent with identical electrical specifications across all critical parameters including collector current, breakdown voltage, saturation voltage, current gain, power dissipation, and transition frequency. The through-hole TO-92-3 package ensures mechanical compatibility with existing PCB layouts and component footprints.

Q: What is the primary reason for substituting the BC560_J35Z?

A: The BC560_J35Z is classified as obsolete, which restricts future availability and manufacturing support. The BC557ATA maintains active product status from Fairchild Semiconductor, providing assured supply chain continuity.

Q: Are there any differences in regulatory compliance between the BC560_J35Z and BC557ATA?

A: No. Both components share identical ECCN and HTSUS classifications, confirming equivalent regulatory treatment and trade compliance status.

Q: Does the BC557ATA require different handling or storage procedures?

A: No. Both components specify MSL 1 (Unlimited), indicating identical moisture sensitivity levels and requiring no special storage or handling precautions.

Q: Can the BC557ATA be used in high-frequency applications?

A: Yes. The BC557ATA maintains the same transition frequency specification (150 MHz) as the BC560_J35Z, supporting equivalent performance in small-signal switching and amplification circuits operating within this frequency range.

Q: Is the TO-92-3 package pinout identical between the two devices?

A: Yes. Both components use the TO-92-3 (TO-226AA) package with formed leads, ensuring identical pinout and mechanical compatibility for direct board-level substitution.

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