MPQ3906 PBFREE Equivalent & Substitute Parts

Part Overview

The MPQ3906 PBFREE is a Bipolar (BJT) Transistor Array containing 4 PNP transistors in a Through Hole TO-116 package. This component is classified as Obsolete, making identification of functionally equivalent substitute parts essential for ongoing design support and production continuity. The MPQ3906 PBFREE was manufactured by Central Semiconductor Corp and is suitable for applications requiring quad PNP transistor arrays with 40V collector-emitter breakdown voltage and 200mA maximum collector current ratings.

Substiute Parts

MPQ3906 PBFREE

Central Semiconductor CorpIn Stock: 681MPQ3906 PBFREE Datasheet

Current PartRFQ

MMPQ3906

onsemiIn Stock: 3270MMPQ3906 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the MPQ3906 PBFREE is determined by strict electrical and mechanical parameter matching within the Bipolar (BJT) Transistor Array category. The following parameters establish substitution eligibility:

Electrical Parameters (Must Match or Exceed):

• Transistor Type: 4 PNP (Quad) configuration
• Current - Collector (Ic) (Max): 200mA minimum
• Voltage - Collector Emitter Breakdown (Max): 40V minimum
• Frequency - Transition: 200MHz minimum
• Operating Temperature Range: Must encompass or exceed -65°C to 150°C

Mechanical Parameters (Functional Equivalence):

• Package configuration must support identical pinout and signal routing
• Mounting type may differ (Through Hole to Surface Mount acceptable with board redesign)

The MMPQ3906 manufactured by onsemi satisfies all electrical parameter requirements for substitution. This part maintains identical transistor array configuration, collector current rating, collector-emitter breakdown voltage, and transition frequency. The MMPQ3906 is classified as Active product status with ROHS3 compliance, providing superior long-term availability compared to the Obsolete MPQ3906 PBFREE.

Parameter Comparison

Engineering Selection Recommendations

Direct Electrical Substitution: The MMPQ3906 (onsemi) provides direct electrical substitution for the MPQ3906 PBFREE across all critical performance parameters. Both devices maintain identical maximum collector current (200mA), collector-emitter breakdown voltage (40V), and transition frequency (200MHz). The MMPQ3906 demonstrates superior electrical performance with higher DC current gain (100 vs. 75 minimum) and increased power dissipation capability (1W vs. 500mW).

Product Status and Compliance: The MPQ3906 PBFREE is classified as Obsolete, creating supply chain risk for new production and long-term support. The MMPQ3906 maintains Active product status with ROHS3 compliance certification, ensuring continued manufacturing availability and regulatory alignment. Both devices carry REACH Unaffected status and EAR99 ECCN classification.

Packaging Consideration: The primary design constraint involves package form factor transition from Through Hole (14-DIP) to Surface Mount (16-SOIC). This substitution requires printed circuit board redesign and assembly process modification. Direct pin-for-pin replacement is not possible without intermediate adapter solutions.

Operating Temperature Range: The MPQ3906 PBFREE supports extended low-temperature operation to -65°C, while the MMPQ3906 operates to -55°C minimum. Applications requiring operation below -55°C require retention of the original MPQ3906 PBFREE or identification of alternative parts with extended temperature specifications.

Frequently Asked Questions (FAQ)

Q: Can the MMPQ3906 replace the MPQ3906 PBFREE in existing Through Hole designs without modification?

A: No. The MMPQ3906 uses Surface Mount 16-SOIC packaging while the MPQ3906 PBFREE uses Through Hole 14-DIP packaging. Direct board-level substitution requires printed circuit board redesign and assembly process changes. Adapter solutions may provide interim compatibility but are not recommended for production implementation.

Q: What are the critical electrical parameters that define substitution eligibility?

A: Substitution eligibility is determined by: (1) Transistor Type - 4 PNP (Quad) configuration; (2) Current - Collector (Ic) (Max) - 200mA minimum; (3) Voltage - Collector Emitter Breakdown (Max) - 40V minimum; (4) Frequency - Transition - 200MHz minimum; (5) Operating Temperature Range - must support application requirements. The MMPQ3906 satisfies all electrical criteria.

Q: Does the MMPQ3906 meet RoHS compliance requirements?

A: Yes. The MMPQ3906 is ROHS3 Compliant. The MPQ3906 PBFREE RoHS status requires inventory verification. Both devices are REACH Unaffected.

Q: What is the impact of higher Vce Saturation in the MMPQ3906?

A: The MMPQ3906 exhibits 400mV Vce Saturation at 5mA/50mA compared to 250mV at 1mA/10mA for the MPQ3906 PBFREE. This represents measurement at different bias conditions. The MMPQ3906 saturation characteristics remain within acceptable limits for standard switching and amplification applications. Circuit-level performance validation is required for applications with tight saturation voltage specifications.

Q: Is the MMPQ3906 suitable for applications requiring -65°C minimum operating temperature?

A: No. The MMPQ3906 operates to -55°C minimum, which does not satisfy applications requiring -65°C operation. The MPQ3906 PBFREE supports -65°C to 150°C range. Alternative parts with extended low-temperature specifications must be identified for such applications.

Q: What inventory status applies to these parts?

A: The MPQ3906 PBFREE has 662 Pcs New Original In Stock. The MMPQ3906 has 3224 Pcs New Original In Stock, providing significantly greater availability for production planning.

Q: Are there pinout differences between the MPQ3906 PBFREE and MMPQ3906?

A: Yes. The MPQ3906 PBFREE uses 14-DIP (0.300", 7.62mm) packaging while the MMPQ3906 uses 16-SOIC (0.154", 3.90mm Width) packaging. Pinout configuration differs between these form factors, requiring schematic and layout redesign for substitution.