MMDT5451-7 Equivalent & Substitute Parts

Part Overview

The MMDT5451-7 is a Bipolar (BJT) Transistor Array containing 1 NPN and 1 PNP transistor in a 6-TSSOP (SOT-363) surface mount package. This component is rated for 160V/150V collector-emitter breakdown voltage, 200mA maximum collector current, and 200mW maximum power dissipation with a 300MHz transition frequency. The MMDT5451-7 is classified as Obsolete, which necessitates identification of equivalent substitute parts for ongoing design support and procurement continuity. Substitute parts must maintain electrical and mechanical compatibility while meeting current product availability and compliance requirements.

Substiute Parts

MMDT5451-7

Diodes IncorporatedIn Stock: 909MMDT5451-7 Datasheet

Current PartRFQ

MMDT5451-7-F

Diodes IncorporatedIn Stock: 85477MMDT5451-7-F Datasheet

DirectRFQ

MMDT5451-TP

Micro Commercial CoIn Stock: 769MMDT5451-TP Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the MMDT5451-7 are qualified based on the following electrical and mechanical parameters:

Critical Matching Parameters:

• Transistor configuration: 1 NPN, 1 PNP array
• Collector-emitter breakdown voltage: 160V (NPN) / 150V (PNP)
• Maximum collector current: 200mA
• Maximum power dissipation: 200mW
• Package type: SOT-363 (6-TSSOP)
• Surface mount mounting type
• Operating temperature range: -55°C to 150°C

Allowable Variation Parameters:

• Transition frequency: 100MHz minimum (300MHz in main part)
• DC current gain (hFE): Variations permitted within specified test conditions
• Vce saturation: Variations permitted within specified test conditions
• Collector cutoff current (ICBO): 50nA maximum

Substitute parts must satisfy all critical matching parameters. Variations in transition frequency and DC current gain are acceptable provided the substitute part meets or exceeds the minimum electrical requirements for the application.

Parameter Comparison

Engineering Selection Recommendations

MMDT5451-7-F (Diodes Incorporated)

The MMDT5451-7-F is a direct equivalent manufactured by Diodes Incorporated with Active product status. This part maintains identical electrical specifications to the main part, including 300MHz transition frequency, matching DC current gain characteristics, and identical Vce saturation parameters. The MMDT5451-7-F carries ROHS3 compliance and MSL Level 1 rating, matching the environmental and regulatory profile of the obsolete MMDT5451-7. This part is available in Cut Tape and Digi-Reel packaging with significantly higher inventory availability (85,400 units). Selection of MMDT5451-7-F is appropriate for direct replacement in all applications where the MMDT5451-7 was previously specified.

MMDT5451-TP (Micro Commercial Co)

The MMDT5451-TP is a substitute part manufactured by Micro Commercial Co with Active product status. This part maintains the same transistor configuration, collector current rating, breakdown voltage, power dissipation, and operating temperature range as the main part. The MMDT5451-TP differs in transition frequency (100MHz versus 300MHz) and exhibits different DC current gain and Vce saturation characteristics. The MMDT5451-TP is suitable for applications where the lower transition frequency and alternative saturation characteristics are compatible with circuit requirements. REACH compliance is confirmed; RoHS status and MSL rating are not specified in available data.

Frequently Asked Questions (FAQ)

Q: Can MMDT5451-7-F be used as a direct replacement for MMDT5451-7?

A: Yes. The MMDT5451-7-F maintains identical electrical specifications including collector current, breakdown voltage, power dissipation, transition frequency, and DC current gain characteristics. Both parts use the SOT-363 package and operate across the same temperature range. The primary difference is product status: MMDT5451-7-F is Active while MMDT5451-7 is Obsolete.

Q: What is the key difference between MMDT5451-7-F and MMDT5451-TP?

A: The primary electrical difference is transition frequency: MMDT5451-7-F operates at 300MHz while MMDT5451-TP operates at 100MHz. Additionally, MMDT5451-TP exhibits different DC current gain and Vce saturation characteristics. Both parts share identical collector current, breakdown voltage, power dissipation, and operating temperature specifications. Selection between these parts depends on whether the application requires the higher frequency performance of the MMDT5451-7-F.

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

A: Yes. All listed substitute parts use the SOT-363 package (6-TSSOP, SC-88) with surface mount mounting type. Package compatibility is confirmed across all alternatives.

Q: What compliance certifications should I verify for my application?

A: MMDT5451-7-F carries ROHS3 compliance and MSL Level 1 rating, matching the original part. MMDT5451-TP confirms REACH compliance; RoHS status and MSL rating are not specified in available documentation. Verify compliance requirements with your specific application and regulatory environment before final part selection.

Q: Is the lower transition frequency of MMDT5451-TP acceptable for my circuit?

A: Transition frequency acceptability depends on your circuit's operating frequency and performance requirements. MMDT5451-TP operates at 100MHz compared to 300MHz for MMDT5451-7-F. If your application operates below 100MHz and does not require the higher frequency performance, MMDT5451-TP is electrically compatible. Consult your circuit design specifications to determine the minimum acceptable transition frequency.

Q: What is the inventory status of each substitute part?

A: MMDT5451-7-F has 85,400 units in stock. MMDT5451-TP has 758 units in stock. MMDT5451-7-F offers significantly higher availability for procurement planning.