ZTX601A Equivalent & Substitute Parts

Part Overview

The ZTX601A is a Bipolar (BJT) Transistor configured as an NPN Darlington type, rated for 160 V collector-emitter breakdown voltage and 1 A maximum collector current. This component is designed for Through Hole mounting in E-Line (TO-92 compatible) packaging and operates across a temperature range of -55°C to 200°C. The ZTX601A is classified as Obsolete, necessitating identification of equivalent substitute components for ongoing design support and procurement continuity.

Substiute Parts

ZTX601A
Diodes IncorporatedIn Stock: 936ZTX601A Datasheet
ZTX601A
Current Part
ZTX601
Diodes IncorporatedIn Stock: 2008ZTX601 Datasheet
ZTX601
Parametric Equivalent

Key Parameters

Parameter Value
Transistor Type NPN - Darlington
Current - Collector (Ic) (Max) 1 A
Voltage - Collector Emitter Breakdown (Max) 160 V
Vce Saturation (Max) @ Ib, Ic 1.2V @ 10mA, 1A
Current - Collector Cutoff (Max) 10µA
DC Current Gain (hFE) (Min) @ Ic, Vce 2000 @ 500mA, 10V
Power - Max 1 W
Frequency - Transition 250MHz
Operating Temperature -55°C ~ 200°C (TJ)
Mounting Type Through Hole
Package / Case E-Line-3
Supplier Device Package E-Line (TO-92 compatible)

Substitute Part Grouping Explanation

Substitution of the ZTX601A is determined by strict equivalence across all critical electrical and mechanical parameters. The substitute component must match the following criteria:

  • Transistor Type: NPN - Darlington configuration
  • Maximum Collector Current: 1 A
  • Maximum Collector-Emitter Breakdown Voltage: 160 V
  • Saturation Voltage: 1.2V @ 10mA, 1A
  • Maximum Collector Cutoff Current: 10µA
  • Minimum DC Current Gain: 2000 @ 500mA, 10V
  • Maximum Power Dissipation: 1 W
  • Transition Frequency: 250MHz
  • Operating Temperature Range: -55°C ~ 200°C
  • Mounting Configuration: Through Hole
  • Package Type: E-Line-3 (TO-92 compatible)

Only components meeting all specified parameters are classified as direct equivalents.

Parameter Comparison

Parameter ZTX601A (Main Part) ZTX601 (Substitute)
Manufacturer Diodes Incorporated Diodes Incorporated
Transistor Type NPN - Darlington NPN - Darlington
Current - Collector (Ic) (Max) 1 A 1 A
Voltage - Collector Emitter Breakdown (Max) 160 V 160 V
Vce Saturation (Max) @ Ib, Ic 1.2V @ 10mA, 1A 1.2V @ 10mA, 1A
Current - Collector Cutoff (Max) 10µA 10µA
DC Current Gain (hFE) (Min) @ Ic, Vce 2000 @ 500mA, 10V 2000 @ 500mA, 10V
Power - Max 1 W 1 W
Frequency - Transition 250MHz 250MHz
Operating Temperature -55°C ~ 200°C (TJ) -55°C ~ 200°C (TJ)
Mounting Type Through Hole Through Hole
Package / Case E-Line-3 E-Line-3
Supplier Device Package E-Line (TO-92 compatible) E-Line (TO-92 compatible)
RoHS Status ROHS3 Compliant ROHS3 Compliant
Moisture Sensitivity Level (MSL) 1 (Unlimited) 1 (Unlimited)
REACH Status REACH Unaffected REACH Unaffected
Product Status Obsolete Active

Engineering Selection Recommendations

The ZTX601 serves as the direct parametric equivalent to the obsolete ZTX601A. Both components are manufactured by Diodes Incorporated and share identical electrical specifications and mechanical packaging. The primary distinction is product status: ZTX601A is classified as Obsolete, while ZTX601 maintains Active status with confirmed inventory availability (1910 Pcs New Original In Stock).

Both components maintain ROHS3 compliance and REACH Unaffected status, ensuring regulatory alignment for current manufacturing environments. The ZTX601 is the appropriate selection for new designs and replacement procurement where the ZTX601A is no longer available through standard distribution channels.

Frequently Asked Questions (FAQ)

Q: Can the ZTX601 directly replace the ZTX601A in existing circuit designs?

A: Yes. The ZTX601 is a parametric equivalent with identical electrical characteristics and mechanical packaging. No circuit modifications are required for substitution.

Q: What is the primary difference between ZTX601A and ZTX601?

A: The ZTX601A is classified as Obsolete, while the ZTX601 maintains Active product status. All electrical and mechanical parameters are identical.

Q: Are there any compliance or regulatory differences between these components?

A: No. Both components maintain ROHS3 compliance and REACH Unaffected status. Regulatory requirements are equivalent.

Q: Does the packaging differ between ZTX601A and ZTX601?

A: No. Both components use E-Line-3 packaging (TO-92 compatible) with Through Hole mounting configuration. Physical dimensions and pin assignments are identical.

Q: What is the operating temperature range for both components?

A: Both the ZTX601A and ZTX601 operate across -55°C to 200°C junction temperature (TJ).

Q: Are there inventory considerations when selecting between these parts?

A: The ZTX601A has 894 Pcs available as New Original In Stock, while the ZTX601 has 1910 Pcs available. The ZTX601 represents the active product line with greater availability.

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