SMCJ8.5A-13 Transient Voltage Suppressor (TVS) Diode Equivalent & Substitute Parts

Part Overview

The SMCJ8.5A-13 is a unidirectional Zener-type transient voltage suppressor manufactured by Diodes Incorporated in DO-214AB (SMC) surface mount package. This component is designed for general-purpose transient voltage suppression applications with a reverse standoff voltage of 8.5V and maximum clamping voltage of 14.4V at peak pulse current. The part is currently discontinued at DiGi Electronics, making equivalent substitutes necessary for ongoing production and maintenance applications.

Substiute Parts

SMCJ8.5A-13

Diodes IncorporatedIn Stock: 1212SMCJ8.5A-13 Datasheet

Current PartRFQ

SMCJ8.5A-13-F

Diodes IncorporatedIn Stock: 1063SMCJ8.5A-13-F Datasheet

DirectRFQ

SMCJ8.5A

EVVO SemiIn Stock: 9502SMCJ8.5A Datasheet

UpgradeRFQ

SMCJ8.5A-TP

Micro Commercial CoIn Stock: 3740SMCJ8.5A-TP Datasheet

UpgradeRFQ

1.5SMC10A

Taiwan Semiconductor CorporationIn Stock: 203021.5SMC10A Datasheet

MFR RecommendedRFQ

1.5SMC10A-E3/57T

Vishay General Semiconductor - Diodes DivisionIn Stock: 20921.5SMC10A-E3/57T Datasheet

MFR RecommendedRFQ

SMDJ8.5A

Alpha & Omega Semiconductor Inc.In Stock: 12477SMDJ8.5A Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the SMCJ8.5A-13 is determined by the following critical electrical and mechanical parameters:

Electrical Compatibility Criteria:

• Voltage - Reverse Standoff (Typ): 8.5V ± tolerance
• Voltage - Clamping (Max) @ Ipp: 14.4V ± tolerance
• Current - Peak Pulse (10/1000µs): 104.2A minimum
• Power - Peak Pulse: 1500W minimum
• Type: Zener, Unidirectional
• Unidirectional Channels: 1

Mechanical Compatibility Criteria:

• Package / Case: DO-214AB, SMC
• Mounting Type: Surface Mount

Packaging Format:

• Cut Tape (CT) or Tape & Reel (TR) formats are interchangeable for component selection

Substitute parts are grouped into three categories: Direct Manufacturer Substitutes (identical electrical specifications, different packaging), Upgrade Substitutes (enhanced performance or compliance), and Manufacturer-Recommended Alternatives (functionally equivalent with minor parameter variations within acceptable engineering tolerances).

Parameter Comparison

Engineering Selection Recommendations

Direct Replacement (Identical Electrical Performance):

SMCJ8.5A-13-F is the primary direct substitute from Diodes Incorporated. It maintains identical electrical specifications (8.5V standoff, 14.4V clamp, 104.2A peak pulse) and mechanical compatibility. The only difference is packaging format (Tape & Reel vs. Cut Tape) and RoHS3 compliance status. This part is currently active and recommended for designs requiring regulatory compliance.

SMCJ8.5A from EVVO Semi and SMCJ8.5A-TP from Micro Commercial Co provide equivalent electrical performance with active product status and ROHS3 compliance. SMCJ8.5A-TP offers extended operating temperature range (-55°C to 175°C) compared to the original specification (-55°C to 150°C).

Manufacturer-Recommended Alternatives:

1.5SMC10A (Taiwan Semiconductor Corporation) and 1.5SMC10A-E3/57T (Vishay General Semiconductor) are manufacturer-recommended alternatives with minor parameter variations. Reverse standoff voltage is 8.55V (0.05V higher), clamping voltage is 14.5V (0.1V higher), and peak pulse current ranges from 103A to 108A. These variations remain within acceptable engineering tolerances for general-purpose transient suppression applications. Both parts are ROHS3 compliant and active.

Enhanced Performance Option:

SMDJ8.5A from Alpha & Omega Semiconductor Inc. provides doubled power dissipation capability (3000W vs. 1500W) and doubled peak pulse current (208.4A vs. 104.2A) while maintaining identical voltage specifications. This part is suitable for applications requiring higher transient energy absorption. It is ROHS3 compliant and currently active.

Compliance Consideration:

The original SMCJ8.5A-13 is RoHS non-compliant. All substitute parts listed are ROHS3 compliant, making them suitable for applications subject to RoHS regulations.

Frequently Asked Questions (FAQ)

Q: Can SMCJ8.5A-13-F be used as a direct replacement for SMCJ8.5A-13?

A: Yes. SMCJ8.5A-13-F is electrically and mechanically identical to SMCJ8.5A-13. The difference is packaging format (Tape & Reel instead of Cut Tape) and RoHS3 compliance. Both use DO-214AB (SMC) surface mount package and have identical electrical ratings.

Q: What is the difference between Cut Tape (CT) and Tape & Reel (TR) packaging?

A: Cut Tape and Tape & Reel are different supply formats for the same component. Cut Tape is supplied in smaller quantities on individual tape segments. Tape & Reel is supplied on continuous reels for automated assembly. Electrically and mechanically, the components are identical. Selection depends on production volume and assembly equipment compatibility.

Q: Can SMDJ8.5A replace SMCJ8.5A-13 in all applications?

A: SMDJ8.5A maintains identical voltage specifications (8.5V standoff, 14.4V clamp) and mechanical compatibility (DO-214AB SMC package). However, it provides doubled power dissipation (3000W vs. 1500W) and doubled peak pulse current (208.4A vs. 104.2A). It is suitable as a replacement in applications where the original part's 1500W rating is adequate. The higher ratings provide additional margin but do not negatively impact performance in standard applications.

Q: Are the 1.5SMC10A series parts compatible with SMCJ8.5A-13?

A: The 1.5SMC10A series (1.5SMC10A and 1.5SMC10A-E3/57T) are manufacturer-recommended alternatives with minor voltage parameter variations. Reverse standoff voltage is 8.55V (vs. 8.5V), and clamping voltage is 14.5V (vs. 14.4V). Peak pulse current is 103A to 108A (vs. 104.2A). These variations are within acceptable engineering tolerances for general-purpose transient suppression. Both parts use identical DO-214AB (SMC) surface mount package and are ROHS3 compliant.

Q: What is the significance of RoHS compliance for this component?

A: RoHS (Restriction of Hazardous Substances) compliance indicates the component does not contain restricted materials such as lead, cadmium, or mercury. ROHS3 compliance is required for products sold in the European Union and many other regulated markets. The original SMCJ8.5A-13 is RoHS non-compliant. All listed substitutes are ROHS3 compliant, making them suitable for regulated applications.

Q: Can I use SMCJ8.5A-TP if my application requires operation above 150°C?

A: SMCJ8.5A-TP has an operating temperature range of -55°C to 175°C, which extends 25°C higher than the original SMCJ8.5A-13 specification (-55°C to 150°C). If your application requires operation between 150°C and 175°C, SMCJ8.5A-TP is suitable. For applications requiring operation above 175°C, consult the full component datasheets for alternative solutions.

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

A: Yes. All substitute parts listed use DO-214AB (SMC) surface mount package, which is mechanically and electrically compatible with the original SMCJ8.5A-13. Packaging format (Cut Tape vs. Tape & Reel) varies by part number but does not affect component compatibility or performance.