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SMCJ20CE3/TR13 Equivalent & Substitute Parts
Part Overview
The SMCJ20CE3/TR13 is a transient voltage suppressor (TVS) diode manufactured by Microchip Technology, designed for general-purpose overvoltage protection applications. This bidirectional Zener diode operates with a 20V reverse standoff voltage and provides clamping at 35.8V maximum, with a peak pulse current rating of 41.9A and peak pulse power of 1500W. The component is housed in a DO-214AB (SMC) surface mount package and is supplied in Tape & Reel packaging.
The SMCJ20CE3/TR13 is classified as an active product with ROHS3 compliance and unlimited moisture sensitivity level (MSL 1). Equivalent and substitute parts are identified based on matching or superior electrical performance within the same package category, allowing for direct replacement or upgraded functionality in circuit designs requiring TVS protection at the 20V standoff voltage rating.
Substiute Parts
Key Parameters
| Parameter | Value | Unit |
|---|---|---|
| Voltage - Reverse Standoff (Typ) | 20 | V |
| Voltage - Breakdown (Min) | 22.2 | V |
| Voltage - Clamping (Max) @ Ipp | 35.8 | V |
| Current - Peak Pulse (10/1000µs) | 41.9 | A |
| Power - Peak Pulse | 1500 | W |
| Operating Temperature Range | -65 to 150 | °C |
| Package / Case | DO-214AB, SMC | — |
| Mounting Type | Surface Mount | — |
| Type | Zener | — |
| Bidirectional Channels | 1 | — |
Substitute Part Grouping Explanation
Substitute parts for the SMCJ20CE3/TR13 are qualified based on the following critical parameters that determine functional equivalence and interchangeability:
Mandatory Matching Parameters:
- Voltage - Reverse Standoff (Typ): 20V
- Voltage - Breakdown (Min): 22.2V
- Package / Case: DO-214AB, SMC
- Mounting Type: Surface Mount
- Type: Zener
- Bidirectional Channels: 1
- Applications: General Purpose
Performance Parameters (Equal or Superior):
- Voltage - Clamping (Max) @ Ipp: 35.8V or lower (lower values indicate better clamping performance)
- Current - Peak Pulse (10/1000µs): 41.9A or higher (higher values indicate greater surge capacity)
- Power - Peak Pulse: 1500W or higher (higher values indicate greater power dissipation capability)
- Operating Temperature Range: Must encompass or exceed -65°C to 150°C
Substitute parts meeting these criteria provide equivalent or enhanced protection characteristics while maintaining pin-compatible surface mount installation in DO-214AB packaging. Parts with superior current or power ratings offer increased design margin for transient suppression without requiring circuit modification.
Parameter Comparison
| Manufacturer Part Number | Manufacturer | Voltage - Reverse Standoff (V) | Voltage - Clamping (Max) @ Ipp (V) | Current - Peak Pulse (A) | Power - Peak Pulse (W) | Operating Temperature (°C) | Packaging |
|---|---|---|---|---|---|---|---|
| SMCJ20CE3/TR13 | Microchip Technology | 20 | 35.8 | 41.9 | 1500 | -65 to 150 | Tape & Reel |
| 5.0SMDJ20CA | MDE Semiconductor Inc | 20 | 32.4 | 155 | 5000 | -55 to 150 | Tape & Reel |
| SMCJ20CA | Fairchild Semiconductor | 20 | 32.4 | 46.3 | 1500 | -55 to 150 | Bulk |
| SMCJ20CA-13-F | Diodes Incorporated | 20 | 32.4 | 46.3 | 1500 | -55 to 150 | Tape & Reel |
| SMCJ20CA-TP | Micro Commercial Co | 20 | 32.4 | 46.3 | 1500 | -55 to 175 | Cut Tape |
| SMDJ20CA | Alpha & Omega Semiconductor Inc. | 20 | 32.4 | 92.6 | 3000 | -55 to 150 | Tape & Reel |
| SMDJ20CA-T7 | Littelfuse Inc. | 20 | 32.4 | 92.6 | 3000 | -65 to 150 | Tape & Reel |
| SMLJ20CA | Bourns Inc. | 20 | 32.4 | 92.6 | 3000 | -55 to 150 | Tape & Reel |
| SMLJ20CA-TP | Micro Commercial Co | 20 | 32.4 | 92.6 | 3000 | -55 to 175 | Cut Tape |
Engineering Selection Recommendations
Direct Equivalents (Identical Electrical Performance):
SMCJ20CA-13-F (Diodes Incorporated) and SMCJ20CA (Fairchild Semiconductor) provide direct electrical equivalence to the SMCJ20CE3/TR13 with matching 1500W peak pulse power and 46.3A peak pulse current. Both are ROHS3 compliant and active products. SMCJ20CA-13-F is supplied in Tape & Reel packaging, matching the original part's supply format. SMCJ20CA is supplied in Bulk packaging. Both operate across -55°C to 150°C, which encompasses the original part's lower temperature limit of -65°C within the upper range.
Enhanced Performance Substitutes (Superior Current/Power Ratings):
SMDJ20CA (Alpha & Omega Semiconductor Inc.), SMDJ20CA-T7 (Littelfuse Inc.), SMLJ20CA (Bourns Inc.), and SMLJ20CA-TP (Micro Commercial Co) offer doubled peak pulse power (3000W) and doubled peak pulse current (92.6A) compared to the original part, while maintaining the same 20V standoff voltage and 32.4V clamping voltage. These parts provide increased design margin for transient suppression. SMDJ20CA-T7 maintains the original part's lower temperature limit of -65°C. All are ROHS3 compliant and active products.
Maximum Performance Substitute (Highest Power Rating):
5.0SMDJ20CA (MDE Semiconductor Inc) provides the highest peak pulse power rating at 5000W with 155A peak pulse current, offering maximum transient suppression capability. This part is suitable for applications requiring the greatest surge protection margin. Operating temperature range is -55°C to 150°C.
Compliance and Regulatory Status:
All substitute parts listed are ROHS3 compliant and classified as active products. SMLJ20CA (Bourns Inc.) is marked as REACH Affected; all other parts are REACH Unaffected. All parts carry EAR99 ECCN classification and HTSUS code 8541.10.0080, matching the original part's regulatory profile.
Frequently Asked Questions (FAQ)
Q: Can SMCJ20CA-13-F directly replace SMCJ20CE3/TR13 without circuit modification?
A: Yes. SMCJ20CA-13-F provides identical electrical performance with matching 20V standoff voltage, 32.4V clamping voltage, 46.3A peak pulse current, and 1500W peak pulse power. Both are housed in DO-214AB (SMC) surface mount packages with identical pinout. Tape & Reel packaging matches the original supply format.
Q: What is the advantage of using SMDJ20CA or SMLJ20CA instead of the original SMCJ20CE3/TR13?
A: SMDJ20CA and SMLJ20CA provide doubled peak pulse power (3000W versus 1500W) and doubled peak pulse current (92.6A versus 41.9A) while maintaining the same 20V standoff voltage. These higher ratings provide increased design margin for transient suppression in applications experiencing higher surge currents or longer pulse durations. No circuit modification is required; the parts are pin-compatible in DO-214AB packaging.
Q: Are there temperature range differences between substitute parts?
A: Yes. The original SMCJ20CE3/TR13 operates from -65°C to 150°C. Most substitute parts operate from -55°C to 150°C, reducing the lower temperature limit by 10°C. SMDJ20CA-T7 and SMLJ20CA-TP extend the upper temperature limit to 175°C. Applications requiring operation below -55°C must use SMCJ20CE3/TR13 or SMDJ20CA-T7.
Q: What packaging options are available for substitute parts?
A: Substitute parts are supplied in three packaging formats: Tape & Reel (TR), Bulk, and Cut Tape (CT). SMCJ20CA-13-F, SMDJ20CA, SMDJ20CA-T7, SMLJ20CA, and 5.0SMDJ20CA are supplied in Tape & Reel. SMCJ20CA is supplied in Bulk. SMCJ20CA-TP, SMLJ20CA-TP are supplied in Cut Tape. Selection depends on assembly process requirements and volume needs.
Q: Do all substitute parts meet ROHS3 compliance?
A: Yes. All substitute parts listed are ROHS3 compliant, matching the original SMCJ20CE3/TR13 regulatory status. SMLJ20CA is marked as REACH Affected; all other parts are REACH Unaffected. Verify REACH compliance requirements for your specific application and end-use region.
Q: Can SMCJ20CA (Fairchild Semiconductor) be used in place of SMCJ20CE3/TR13?
A: Yes, electrically. SMCJ20CA provides identical performance with 20V standoff voltage, 32.4V clamping voltage, 46.3A peak pulse current, and 1500W peak pulse power. However, it is supplied in Bulk packaging rather than Tape & Reel. If Tape & Reel format is required for automated assembly, use SMCJ20CA-13-F (Diodes Incorporated) instead.
Q: Is 5.0SMDJ20CA suitable for all applications using SMCJ20CE3/TR13?
A: 5.0SMDJ20CA provides superior performance with 5000W peak pulse power and 155A peak pulse current, making it suitable for high-surge applications. However, its operating temperature range is -55°C to 150°C, which does not extend to the original part's lower limit of -65°C. Use 5.0SMDJ20CA only in applications where the -55°C minimum temperature is acceptable.
Q: What is the difference between SMDJ and SMLJ series parts?
A: Both SMDJ and SMLJ series parts provide identical electrical specifications for the 20V rating: 32.4V clamping voltage, 92.6A peak pulse current, and 3000W peak pulse power. The primary differences are manufacturer (Alpha & Omega Semiconductor for SMDJ, Bourns for SMLJ) and REACH compliance status (SMLJ20CA is REACH Affected). Both are pin-compatible in DO-214AB packaging.
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