SMDJ13C Equivalent & Substitute Parts

Part Overview

The SMDJ13C is a bidirectional transient voltage suppressor (TVS) diode manufactured by Littelfuse Inc., designed for general-purpose overvoltage protection in surface-mount applications. This component features a 13V reverse standoff voltage, 22.58V maximum clamping voltage, and 3000W peak pulse power rating in a DO-214AB (SMC) package. The product is currently obsolete, making equivalent substitutes necessary for new designs and ongoing production requirements.

Key Parameters

Parameter	Value
Reverse Standoff Voltage (Typ)	13V
Breakdown Voltage (Min)	13.64V
Clamping Voltage (Max) @ Ipp	22.58V
Peak Pulse Current (10/1000µs)	139.5A
Peak Pulse Power	3000W
Operating Temperature Range	-65°C to 150°C
Package Type	DO-214AB (SMC)
Mounting Type	Surface Mount
Bidirectional Channels	1

Substitute Part Grouping Explanation

Substitution eligibility for the SMDJ13C is determined by the following critical parameters:

Reverse Standoff Voltage: Must be 13V (Typ)
Clamping Voltage Range: 21.5V to 22.58V @ Ipp
Peak Pulse Current: 69.8A to 139.6A (determines power dissipation capability)
Peak Pulse Power: 1500W to 3000W
Package: DO-214AB (SMC) surface mount
Bidirectional Channels: 1 channel
Type: Zener TVS diode

Substitute parts are grouped into two categories based on peak pulse current and power rating:

Group A (Full Power Rating - 3000W): SMDJ13CA, SMLJ13CA, SMLJ13CA-TP, TV30C130JB-G

Peak pulse current: 139.3A to 139.6A
Peak pulse power: 3000W
Direct functional equivalents with identical power handling

Group B (Reduced Power Rating - 1500W): SMCJ13CA, SMCJ13CA-TP, SMCJ13CAE3/TR13, TV15C130JB-G

Peak pulse current: 69.7A to 69.8A
Peak pulse power: 1500W
Suitable for applications with lower transient energy requirements

Parameter Comparison

Part Number	Manufacturer	Standoff Voltage	Breakdown Voltage (Min)	Clamping Voltage (Max)	Peak Pulse Current	Peak Pulse Power	Operating Temp Range	Product Status
SMDJ13C	Littelfuse Inc.	13V	13.64V	22.58V	139.5A	3000W	-65°C to 150°C	Obsolete
SMDJ13CA	Alpha & Omega Semiconductor	13V	14.4V	21.5V	139.6A	3000W	-55°C to 150°C	Active
SMCJ13CA	Fairchild Semiconductor	13V	14.4V	21.5V	69.8A	1500W	-55°C to 150°C	Active
SMCJ13CA-TP	Micro Commercial Co	13V	14.4V	21.5V	69.8A	1500W	-55°C to 175°C	Active
SMCJ13CAE3/TR13	Microchip Technology	13V	14.4V	21.5V	69.7A	1500W	-65°C to 150°C	Active
SMLJ13CA	Bourns Inc.	13V	14.4V	21.5V	139.4A	3000W	-55°C to 150°C	Active
SMLJ13CA-TP	Micro Commercial Co	13V	14.4V	21.5V	139.4A	3000W	-55°C to 175°C	Active
TV15C130JB-G	Comchip Technology	13V	14.4V	21.5V	69.77A	1500W	-55°C to 150°C	Active
TV30C130JB-G	Comchip Technology	13V	14.4V	21.5V	139.53A	3000W	-55°C to 150°C	Active

Engineering Selection Recommendations

For Direct Replacement (Full Power Capability)

SMDJ13CA, SMLJ13CA, SMLJ13CA-TP, and TV30C130JB-G maintain the 3000W peak pulse power rating of the original SMDJ13C. All are active products with RoHS3 compliance. SMDJ13CA offers the closest electrical match with 139.6A peak pulse current. SMLJ13CA and TV30C130JB-G provide equivalent performance with broader manufacturer availability. SMLJ13CA-TP extends the operating temperature range to 175°C.

For Reduced Power Applications

SMCJ13CA, SMCJ13CA-TP, SMCJ13CAE3/TR13, and TV15C130JB-G are suitable when transient energy levels do not exceed 1500W. These parts reduce component cost while maintaining voltage protection parameters. SMCJ13CAE3/TR13 supports the original -65°C lower temperature limit. SMCJ13CA-TP and SMLJ13CA-TP extend the upper operating temperature to 175°C for high-temperature environments.

Compliance Considerations

All substitute parts are RoHS3 compliant. SMLJ13CA carries REACH Affected status; all others are REACH Unaffected. Moisture sensitivity level is 1 (Unlimited) for all parts with specified MSL ratings.

Frequently Asked Questions (FAQ)

Q: Can SMCJ13CA replace SMDJ13C in all applications?

A: SMCJ13CA is electrically compatible for voltage protection but has half the peak pulse power rating (1500W vs. 3000W). Use only in applications where transient energy does not exceed 1500W. For full power equivalence, select SMDJ13CA, SMLJ13CA, or TV30C130JB-G.

Q: What is the difference between SMDJ13CA and SMLJ13CA?

A: Both maintain 3000W peak pulse power and 139+ A peak pulse current. SMDJ13CA is from Alpha & Omega Semiconductor with -55°C to 150°C operating range. SMLJ13CA is from Bourns Inc. with identical temperature range. Selection depends on supplier availability and procurement lead times.

Q: Are all substitutes available in tape and reel packaging?

A: SMDJ13CA, SMCJ13CA-TP, SMCJ13CAE3/TR13, SMLJ13CA, SMLJ13CA-TP, TV15C130JB-G, and TV30C130JB-G are available in tape and reel (TR) packaging. SMCJ13CA is available in bulk packaging. Verify packaging availability with your supplier.

Q: Does the clamping voltage difference (22.58V vs. 21.5V) affect compatibility?

A: The clamping voltage difference is within normal manufacturing tolerance for TVS diodes. All substitutes clamp at 21.5V maximum, which is 0.94% lower than the original SMDJ13C at 22.58V. This difference does not affect circuit protection performance in general-purpose applications.

Q: Which substitute supports the widest operating temperature range?

A: SMCJ13CA-TP and SMLJ13CA-TP both support -55°C to 175°C. SMCJ13CAE3/TR13 supports -65°C to 150°C, matching the original SMDJ13C lower temperature limit. Select based on your application's thermal requirements.

Q: Can I use TV15C130JB-G and TV30C130JB-G interchangeably?

A: No. TV15C130JB-G has 1500W peak pulse power (69.77A), while TV30C130JB-G has 3000W peak pulse power (139.53A). TV30C130JB-G is the direct equivalent to SMDJ13C. Use TV15C130JB-G only for reduced-power applications.

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