SB1250-TP Equivalent & Substitute Parts

Part Overview

The SB1250-TP is a Schottky rectifier diode manufactured by Micro Commercial Co, rated for 50V DC reverse voltage and 12A average rectified current in a through-hole DO-201AD axial package. This component is classified as obsolete, necessitating identification of equivalent substitute parts for ongoing design requirements and procurement needs. The SB1250-TP remains available in inventory (798 pieces), but obsolete status requires engineers to evaluate active alternative components for new designs and long-term supply chain planning.

Substiute Parts

SB1250-TP

Micro Commercial CoIn Stock: 821SB1250-TP Datasheet

Current PartRFQ

STR15100SS_AY_00301

Panjit International Inc.In Stock: 3562STR15100SS_AY_00301 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the SB1250-TP with the STR15100SS_AY_00301 is determined by the following criteria:

Package Compatibility: Both components utilize the DO-201AD axial through-hole package, enabling direct mechanical and electrical board-level substitution without layout modifications.

Technology Match: Both devices employ Schottky rectifier technology, ensuring consistent switching characteristics and forward voltage behavior within the specified operating range.

Electrical Envelope: The STR15100SS_AY_00301 provides higher voltage and current ratings (100V, 15A) compared to the SB1250-TP (50V, 12A). This represents an uprated substitute suitable for applications where the original specifications are met within the substitute's operating envelope.

Speed Characteristics: Both components feature fast recovery characteristics (≤ 500ns, > 200mA), maintaining equivalent transient response performance.

Temperature Range: Both devices operate across overlapping junction temperature ranges (-55°C to 150°C for STR15100SS_AY_00301 versus -65°C to 150°C for SB1250-TP), with the substitute covering the critical upper and lower operational bounds.

Regulatory Compliance: The STR15100SS_AY_00301 carries active product status with RoHS3 compliance and REACH unaffected designation, providing superior long-term supply chain assurance compared to the obsolete SB1250-TP.

Parameter Comparison

Engineering Selection Recommendations

For Obsolete Component Replacement: The STR15100SS_AY_00301 is suitable for applications currently specified for the SB1250-TP where the circuit design operates within 50V and 12A maximum ratings. The substitute's higher voltage and current ratings provide design margin without requiring circuit modification.

For New Designs: The STR15100SS_AY_00301 is the preferred selection due to active product status, ensuring long-term availability and supply chain continuity. RoHS3 compliance and REACH unaffected designation satisfy modern regulatory requirements.

Compliance Considerations: Both components carry REACH unaffected status and EAR99 ECCN classification. The STR15100SS_AY_00301 additionally provides RoHS3 compliance certification and MSL Level 1 moisture sensitivity rating, supporting stringent manufacturing and storage protocols.

Inventory Planning: The STR15100SS_AY_00301 maintains significantly higher inventory availability (3457 pieces) compared to the SB1250-TP (798 pieces), supporting procurement reliability and lead-time reduction.

Frequently Asked Questions (FAQ)

Q: Can the STR15100SS_AY_00301 directly replace the SB1250-TP without circuit modification?

A: Yes. Both components share identical DO-201AD axial through-hole packaging and Schottky technology. The substitute's higher voltage (100V) and current (15A) ratings encompass the original specifications (50V, 12A), permitting direct substitution in circuits designed for the SB1250-TP.

Q: What are the key electrical differences between these components?

A: The STR15100SS_AY_00301 provides doubled voltage rating (100V versus 50V) and increased current capacity (15A versus 12A). Forward voltage drop increases marginally (750mV @ 15A versus 700mV @ 12A). Reverse leakage current is significantly lower in the substitute (50µA @ 100V versus 500µA @ 50V). Junction capacitance is higher in the substitute (800pF versus 380pF @ 4V, 1MHz).

Q: Are there temperature range limitations when substituting?

A: The STR15100SS_AY_00301 operates from -55°C to 150°C, compared to the SB1250-TP range of -65°C to 150°C. Applications requiring operation below -55°C junction temperature require verification against the substitute's lower temperature limit.

Q: Does packaging remain identical between these components?

A: Yes. Both components utilize DO-201AD axial through-hole packaging. No PCB layout or mechanical assembly modifications are required for substitution.

Q: What is the significance of the STR15100SS_AY_00301 active product status?

A: Active product status indicates ongoing manufacturer support, continued production, and long-term supply availability. This contrasts with the SB1250-TP obsolete status, which indicates discontinued production and limited future availability.

Q: How do the reverse leakage characteristics compare?

A: The STR15100SS_AY_00301 exhibits substantially lower reverse leakage current (50µA @ 100V) compared to the SB1250-TP (500µA @ 50V). This represents improved leakage performance and reduced power dissipation in reverse-biased conditions.

Q: Are regulatory compliance certifications equivalent?

A: Both components carry REACH unaffected and EAR99 ECCN designations. The STR15100SS_AY_00301 additionally provides RoHS3 compliance and MSL Level 1 certification, exceeding the regulatory profile of the obsolete SB1250-TP.