SMBJ17A-TP Equivalent & Substitute Parts

Part Overview

The SMBJ17A-TP is a unidirectional Zener transient voltage suppressor (TVS) diode manufactured by Micro Commercial Co, designed for general-purpose transient voltage protection in surface-mount applications. The device features a 17V reverse standoff voltage with a 27.6V maximum clamping voltage and 21.7A peak pulse current capability in a DO-214AA (SMB) package. This part is active and in production, with 1104 units currently in stock. Substitute parts are identified to address inventory availability, lead time requirements, or alternative sourcing needs while maintaining electrical and mechanical compatibility.

Substiute Parts

SMBJ17A-TP

Micro Commercial CoIn Stock: 1180SMBJ17A-TP Datasheet

Current PartRFQ

SMBJ17A

MeritekIn Stock: 15470SMBJ17A Datasheet

DirectRFQ

SMBJ17A

MeritekIn Stock: 15470SMBJ17A Datasheet

DirectRFQ

SMBJ17A

MeritekIn Stock: 15470SMBJ17A Datasheet

DirectRFQ

SMBJ17A-E3/52

Vishay General Semiconductor - Diodes DivisionIn Stock: 45351SMBJ17A-E3/52 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the SMBJ17A-TP are qualified based on the following electrical and mechanical parameters:

• Voltage - Reverse Standoff (Typ): 17V
• Voltage - Breakdown (Min): 18.9V
• Voltage - Clamping (Max) @ Ipp: 27.6V
• Current - Peak Pulse (10/1000µs): 21.7A (±0.04A tolerance acceptable)
• Power - Peak Pulse: 600W
• Package / Case: DO-214AA (SMB)
• Mounting Type: Surface Mount
• Type: Zener, Unidirectional
• RoHS Status: ROHS3 Compliant
• Moisture Sensitivity Level (MSL): 1 (Unlimited)

All identified substitutes maintain these core electrical specifications and package requirements. Operating temperature range variations are noted but do not disqualify substitution in applications operating within the overlapping temperature window (-55°C ~ 150°C).

Parameter Comparison

Engineering Selection Recommendations

All three parts maintain active product status and ROHS3 compliance with MSL 1 (Unlimited) moisture sensitivity rating. Selection between the SMBJ17A-TP, SMBJ17A (Meritek), and SMBJ17A-E3/52 (Vishay) is determined by availability and sourcing requirements.

The SMBJ17A-TP (Micro Commercial Co) provides the highest operating temperature ceiling at 175°C, suitable for applications requiring extended thermal performance. The SMBJ17A (Meritek) and SMBJ17A-E3/52 (Vishay) both operate to 150°C and are electrically equivalent with peak pulse current specifications within 0.04A of the primary part.

For applications operating within the -55°C to 150°C range, all three parts are functionally interchangeable. The SMBJ17A-E3/52 (Vishay TransZorb® series) offers the highest inventory availability at 45,300 units. The SMBJ17A (Meritek) provides intermediate availability at 15,419 units.

Frequently Asked Questions (FAQ)

Q: Can SMBJ17A (Meritek) directly replace SMBJ17A-TP (Micro Commercial Co)?

A: Yes, within the operating temperature range of -55°C to 150°C. Both parts share identical voltage specifications (17V standoff, 18.9V breakdown, 27.6V clamping), equivalent peak pulse current (21.7A vs. 21.74A), and the same DO-214AA (SMB) package. The primary difference is the maximum operating temperature: SMBJ17A-TP extends to 175°C, while SMBJ17A is rated to 150°C.

Q: What is the difference between SMBJ17A-TP and SMBJ17A-E3/52?

A: Both parts are electrically identical with 17V standoff voltage, 27.6V clamping voltage, and 21.7A peak pulse current in DO-214AA (SMB) packages. The SMBJ17A-E3/52 is manufactured by Vishay (TransZorb® series) and packaged in Tape & Reel (TR), while SMBJ17A-TP is from Micro Commercial Co. Operating temperature ranges are -55°C to 175°C (SMBJ17A-TP) and -55°C to 150°C (SMBJ17A-E3/52).

Q: Are all substitute parts RoHS compliant?

A: Yes. All three parts—SMBJ17A-TP, SMBJ17A (Meritek), and SMBJ17A-E3/52 (Vishay)—are ROHS3 compliant with MSL 1 (Unlimited) moisture sensitivity rating.

Q: Can I use SMBJ17A-E3/52 in applications requiring 175°C operation?

A: No. The SMBJ17A-E3/52 is rated to 150°C maximum junction temperature. For applications requiring operation above 150°C, only the SMBJ17A-TP (rated to 175°C) is suitable.

Q: What packaging formats are available?

A: SMBJ17A-TP is supplied in Tape & Reel (TR) packaging. SMBJ17A-E3/52 is also available in Tape & Reel (TR). SMBJ17A (Meritek) packaging format is not specified in available data. All three use the DO-214AA (SMB) surface-mount package.

Q: Are the peak pulse current specifications identical?

A: Substantially equivalent. SMBJ17A-TP and SMBJ17A-E3/52 are both rated at 21.7A peak pulse current (10/1000µs). SMBJ17A (Meritek) is rated at 21.74A, a difference of 0.04A within normal manufacturing tolerance.