1SMB5954B-13 Equivalent & Substitute Parts

Part Overview

The 1SMB5954B-13 is a Zener diode manufactured by Diodes Incorporated, rated for 160 V nominal Zener voltage with 3 W maximum power dissipation in a Surface Mount SMB package. This component is classified as Active product status and is RoHS3 compliant. Substitute parts are identified when equivalent electrical specifications and mechanical compatibility are maintained across the same package form factor and performance envelope.

Substiute Parts

1SMB5954B-13

Diodes IncorporatedIn Stock: 8161SMB5954B-13 Datasheet

Current PartRFQ

1SMB5954BT3G

onsemiIn Stock: 39181SMB5954BT3G Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the 1SMB5954B-13 are identified based on strict electrical and mechanical parameter equivalence. The following criteria determine substitution eligibility:

Electrical Parameters (Must Match):

• Voltage - Zener (Nom): 160 V
• Power - Max: 3 W
• Tolerance: ±5%
• Impedance (Max): 700 Ohms
• Current - Reverse Leakage @ Vr: 1 µA @ 121.6 V
• Voltage - Forward (Vf) (Max) @ If: 1.5 V @ 200 mA
• Operating Temperature Range: -65°C to 150°C

Mechanical Parameters (Must Match):

• Package / Case: DO-214AA, SMB
• Mounting Type: Surface Mount
• Supplier Device Package: SMB

Compliance Parameters (Must Match):

• RoHS Status: ROHS3 Compliant
• Moisture Sensitivity Level: 1 (Unlimited)

All substitute parts listed maintain identical specifications across these parameters, ensuring direct functional and physical compatibility in circuit applications.

Parameter Comparison

Engineering Selection Recommendations

Both the 1SMB5954B-13 (Diodes Incorporated) and 1SMB5954BT3G (onsemi) are Active product status components with identical electrical and mechanical specifications. Selection between these parts is based on availability and supply chain requirements.

The 1SMB5954BT3G (onsemi) currently maintains higher inventory availability at 3900 pieces in stock compared to 728 pieces for the 1SMB5954B-13. Both components are ROHS3 compliant, REACH unaffected, and classified under ECCN EAR99 with identical HTSUS code 8541.10.0050.

For applications requiring the 160 V / 3 W SMB Zener diode specification, either part provides equivalent performance and reliability within the specified operating temperature range of -65°C to 150°C.

Frequently Asked Questions (FAQ)

Q: Can the 1SMB5954BT3G replace the 1SMB5954B-13 in existing designs?

A: Yes. Both parts share identical electrical specifications (160 V Zener voltage, 3 W power rating, ±5% tolerance), mechanical package (DO-214AA SMB), and compliance certifications (ROHS3, MSL 1). Direct substitution is supported without circuit modification.

Q: Are there differences in thermal performance between these parts?

A: No. Both parts specify identical maximum power dissipation of 3 W and operating temperature range of -65°C to 150°C. Thermal characteristics are equivalent.

Q: Do these parts have different moisture sensitivity requirements?

A: No. Both parts are classified as Moisture Sensitivity Level 1 (Unlimited), indicating no special moisture control measures are required during storage or handling.

Q: What is the significance of the SMB package designation?

A: SMB (Surface Mount Body) refers to the DO-214AA package form factor. Both parts use this identical package, ensuring mechanical compatibility with existing PCB layouts and reflow soldering processes.

Q: Are there any compliance or regulatory differences between manufacturers?

A: No. Both parts are ROHS3 compliant, REACH unaffected, and carry identical ECCN and HTSUS classifications, indicating equivalent regulatory status for procurement and export purposes.

Q: What determines the ±5% tolerance specification?

A: The ±5% tolerance applies to the nominal Zener voltage of 160 V, establishing the acceptable voltage range for circuit design calculations. Both parts maintain this identical tolerance specification.