2SD669A-C-BP Equivalent & Substitute Parts

Part Overview

The 2SD669A-C-BP is an NPN bipolar junction transistor manufactured by Micro Commercial Co, designed for general-purpose switching and amplification applications. This device features a maximum collector current of 1.5 A, collector-emitter breakdown voltage of 160 V, and a maximum power dissipation of 1 W in a Through Hole TO-126 package. The 2SD669A-C-BP is classified as obsolete, making identification of equivalent substitute parts essential for ongoing design support, maintenance, and production continuity.

Substiute Parts

2SD669A-C-BP

Micro Commercial CoIn Stock: 10722SD669A-C-BP Datasheet

Current PartRFQ

TTC004B,Q

Toshiba Semiconductor and StorageIn Stock: 924TTC004B,Q Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the 2SD669A-C-BP is determined by strict equivalence across the following critical electrical and mechanical parameters:

Electrical Compatibility Criteria:

• Transistor polarity: NPN configuration required
• Maximum collector current: 1.5 A or greater
• Collector-emitter breakdown voltage: 160 V or greater
• Power dissipation capability: 1 W or greater
• Operating temperature range: Must encompass or exceed -55°C to 150°C

Mechanical Compatibility Criteria:

• Package type: TO-126 or TO-126N (pin-compatible Through Hole packages)
• Mounting configuration: Through Hole

Compliance Requirements:

• RoHS compliance status must be documented
• Moisture sensitivity level: MSL 1 (Unlimited) preferred for equivalent handling

The TTC004B,Q from Toshiba Semiconductor and Storage meets all substitution criteria and is classified as an active product, providing superior long-term availability compared to the obsolete 2SD669A-C-BP.

Parameter Comparison

Engineering Selection Recommendations

Primary Substitute: TTC004B,Q

The TTC004B,Q is the recommended substitute for the obsolete 2SD669A-C-BP based on the following engineering factors:

1. Product Status: The TTC004B,Q is classified as Active, ensuring continued availability, manufacturing support, and supply chain stability. The 2SD669A-C-BP is obsolete and subject to discontinuation and inventory depletion.

2. Electrical Equivalence: Both devices share identical maximum ratings for collector current (1.5 A) and collector-emitter breakdown voltage (160 V), ensuring direct functional replacement in circuit applications.

3. Package Compatibility: Both transistors utilize the TO-126-3 Through Hole package, permitting direct mechanical substitution without PCB redesign or layout modification.

4. Compliance Certification: Both devices meet RoHS compliance requirements. The TTC004B,Q carries RoHS Compliant certification, while the 2SD669A-C-BP is ROHS3 Compliant. Both are suitable for environmentally regulated applications.

5. Enhanced Performance Characteristics: The TTC004B,Q demonstrates superior performance in several parameters: reduced saturation voltage (500 mV versus 1 V), lower collector cutoff current (100 nA versus 10 µA), higher DC current gain (140 versus 100), and increased power dissipation capability (10 W versus 1 W). These improvements provide design margin and enhanced reliability.

6. Transition Frequency Consideration: The 2SD669A-C-BP exhibits a higher transition frequency (140 MHz versus 100 MHz). Applications requiring operation above 100 MHz should be evaluated for frequency-dependent performance impact.

Frequently Asked Questions (FAQ)

Q: Can the TTC004B,Q directly replace the 2SD669A-C-BP without circuit modification?

A: Yes. Both transistors are NPN devices with identical maximum collector current (1.5 A) and collector-emitter breakdown voltage (160 V) ratings. The TO-126-3 package pinout is identical, permitting direct mechanical and electrical substitution. No circuit redesign is required for standard switching and amplification applications operating below 100 MHz.

Q: What is the impact of the lower transition frequency in the TTC004B,Q?

A: The TTC004B,Q operates at 100 MHz maximum transition frequency compared to 140 MHz for the 2SD669A-C-BP. For applications requiring switching or amplification at frequencies below 100 MHz, this difference is not operationally significant. Applications specifically designed for operation above 100 MHz should be evaluated to confirm frequency compatibility.

Q: Are there any thermal management differences between these devices?

A: The TTC004B,Q has a maximum power dissipation rating of 10 W compared to 1 W for the 2SD669A-C-BP. This provides superior thermal headroom and allows operation at higher power levels. Both devices share the same maximum operating temperature of 150°C. Thermal design considerations should account for the specific application power requirements.

Q: How do the saturation voltage characteristics compare?

A: The TTC004B,Q exhibits a saturation voltage of 500 mV at specified test conditions, compared to 1 V for the 2SD669A-C-BP. Lower saturation voltage reduces power dissipation in switching applications and improves efficiency. This represents an improvement in the substitute device.

Q: What is the significance of the collector cutoff current difference?

A: The TTC004B,Q has a maximum collector cutoff current (ICBO) of 100 nanoamperes compared to 10 microamperes for the 2SD669A-C-BP. Lower cutoff current reduces leakage current in the off state, improving circuit performance in precision applications and reducing standby power consumption.

Q: Are both devices RoHS compliant?

A: Yes. The 2SD669A-C-BP is ROHS3 Compliant, and the TTC004B,Q is RoHS Compliant. Both devices meet environmental compliance requirements for regulated markets and applications.

Q: What is the moisture sensitivity level for both devices?

A: Both the 2SD669A-C-BP and TTC004B,Q are classified as MSL 1 (Unlimited), indicating no moisture sensitivity restrictions. Standard handling and storage procedures apply without special moisture control requirements.

Q: Why is the TTC004B,Q preferred despite the lower transition frequency?

A: The TTC004B,Q is preferred because it is an active product with assured long-term availability, whereas the 2SD669A-C-BP is obsolete. For applications operating below 100 MHz, the transition frequency difference is not limiting. The substitute device offers superior electrical performance in saturation voltage, cutoff current, and power dissipation, providing design margin and enhanced reliability.