1.5SMC100CA-M3/9AT Transient Voltage Suppressor (TVS) Diode - Equivalent & Substitute Parts

Part Overview

The 1.5SMC100CA-M3/9AT is an active-status, bidirectional Zener-type transient voltage suppressor manufactured by Vishay General Semiconductor - Diodes Division. This surface-mount DO-214AB (SMC) package component provides 85.5V reverse standoff voltage with 137V maximum clamping voltage and 10.9A peak pulse current capability. The device is designed for general-purpose transient voltage suppression applications and is ROHS3 compliant with unlimited moisture sensitivity level (MSL 1). Equivalent and substitute parts are identified to support procurement flexibility, inventory management, and design continuity when the primary part becomes unavailable or when alternative manufacturers' specifications meet application requirements.

Substiute Parts

1.5SMC100CA-M3/9AT

Vishay General Semiconductor - Diodes DivisionIn Stock: 11551.5SMC100CA-M3/9AT Datasheet

Current PartRFQ

1.5SMC100CA

Taiwan Semiconductor CorporationIn Stock: 71151.5SMC100CA Datasheet

MFR RecommendedRFQ

1.5SMC100CA

Taiwan Semiconductor CorporationIn Stock: 71151.5SMC100CA Datasheet

MFR RecommendedRFQ

SM15T100CA

STMicroelectronicsIn Stock: 5753SM15T100CA Datasheet

MFR RecommendedRFQ

SMCJ1.5KE100CA-TP

Micro Commercial CoIn Stock: 1129SMCJ1.5KE100CA-TP Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 1.5SMC100CA-M3/9AT is determined by strict equivalence across the following critical parameters:

Mandatory Matching Parameters:

• Voltage - Reverse Standoff (Typ): 85.5V
• Voltage - Breakdown (Min): 95V
• Voltage - Clamping (Max) @ Ipp: 137V
• Package / Case: DO-214AB, SMC
• Mounting Type: Surface Mount
• Type: Zener
• Bidirectional Channels: 1
• RoHS Status: ROHS3 Compliant
• MSL Rating: 1 (Unlimited)

Allowable Variation Parameters:

• Current - Peak Pulse (10/1000µs): ±5% tolerance acceptable (10.9A nominal; range 10.36A to 11.45A)
• Operating Temperature Range: Minimum -55°C acceptable (original -65°C); Maximum 150°C or higher acceptable
• Power - Peak Pulse: 1500W nominal; minor variations acceptable if within application margin

Identified Substitute Parts:

1. 1.5SMC100CA (Taiwan Semiconductor Corporation) — Direct equivalent with 11.4A peak pulse current
2. SM15T100CA (STMicroelectronics) — Voltage-compatible with higher peak pulse current (56A @ 8/20µs) and higher clamping voltage (178V)
3. SMCJ1.5KE100CA-TP (Micro Commercial Co) — Direct equivalent with 11.1A peak pulse current and extended temperature range (-55°C to 175°C)

Parameter Comparison

Engineering Selection Recommendations

1.5SMC100CA (Taiwan Semiconductor Corporation) is the primary recommended substitute. This part maintains identical voltage specifications (85.5V standoff, 95V breakdown, 137V clamping) and equivalent peak pulse current (11.4A versus 10.9A nominal). The operating temperature range (-55°C to 150°C) is acceptable for most applications where the original -65°C lower limit is not a critical design constraint. All compliance certifications (ROHS3, MSL 1) are maintained. This substitute offers the highest inventory availability (7056 pcs) and direct functional equivalence.

SMCJ1.5KE100CA-TP (Micro Commercial Co) is an alternative substitute suitable for applications requiring extended operating temperature range. This part provides identical voltage performance (85.5V standoff, 95V breakdown, 137V clamping) with equivalent peak pulse current (11.1A) and extends the maximum operating temperature to 175°C. ROHS3 and MSL 1 compliance are maintained. This substitute is appropriate when thermal margin or high-temperature operation is a design requirement.

SM15T100CA (STMicroelectronics) is a voltage-compatible alternative with enhanced transient suppression capability. While maintaining the 85.5V standoff and 95V breakdown voltages, this part exhibits higher clamping voltage (178V) and significantly higher peak pulse current (56A @ 8/20µs). This substitute is suitable only for applications where the higher clamping voltage does not violate circuit protection thresholds and where the enhanced current handling provides design margin. The different pulse measurement standard (8/20µs versus 10/1000µs) reflects different transient waveform characteristics and must be evaluated against actual application transient profiles.

All substitute parts maintain active product status and full regulatory compliance (ROHS3, REACH unaffected, EAR99 classification, HTSUS 8541.10.0080).

Frequently Asked Questions (FAQ)

Q: Can I use 1.5SMC100CA as a direct drop-in replacement for 1.5SMC100CA-M3/9AT?

A: Yes. The 1.5SMC100CA from Taiwan Semiconductor Corporation is a direct functional equivalent. Both parts share identical voltage specifications (85.5V standoff, 95V breakdown, 137V clamping), equivalent peak pulse current ratings (11.4A versus 10.9A), identical package (DO-214AB, SMC), and matching compliance certifications. The operating temperature range difference (-55°C to 150°C versus -65°C to 150°C) is acceptable unless your application specifically requires operation below -55°C.

Q: What is the difference between the 10/1000µs and 8/20µs pulse measurement standards used for peak current ratings?

A: These represent different transient waveform profiles. The 10/1000µs standard (used for 1.5SMC100CA-M3/9AT, 1.5SMC100CA, and SMCJ1.5KE100CA-TP) describes a slower transient pulse with 10µs rise time and 1000µs decay time. The 8/20µs standard (used for SM15T100CA) describes a faster transient with 8µs rise time and 20µs decay time. Peak current ratings are specific to their respective waveforms. Selection between these parts requires matching the pulse standard to your actual application transient profile.

Q: Why does SM15T100CA have a higher clamping voltage (178V) than the original part (137V)?

A: SM15T100CA is from a different manufacturer series (STMicroelectronics TRANSIL™ versus Vishay TransZorb®) and exhibits different clamping characteristics. While both maintain the same 85.5V standoff voltage, the higher clamping voltage reflects the device's internal design. This part is suitable only if your circuit protection scheme tolerates the higher clamping voltage without exceeding downstream component voltage ratings.

Q: Are all substitute parts available in the same packaging format?

A: Yes. All identified substitute parts use the DO-214AB (SMC) surface-mount package with identical footprint and mounting characteristics. No PCB layout modifications are required for substitution.

Q: What compliance certifications apply to all substitute parts?

A: All substitute parts maintain ROHS3 compliance, MSL 1 (unlimited moisture sensitivity level), REACH unaffected status, EAR99 export classification, and HTSUS code 8541.10.0080. No compliance gaps exist between the original part and any identified substitute.

Q: Can I use SMCJ1.5KE100CA-TP if my application requires operation above 150°C?

A: SMCJ1.5KE100CA-TP extends the maximum operating temperature to 175°C, providing additional thermal margin. However, verify that your specific application transient profile and circuit protection requirements remain within specification at the elevated temperature. Consult the manufacturer's detailed datasheet for temperature-dependent parameter derating curves.