Request Quote
(Ships tomorrow)
P4SMA75C Equivalent & Substitute Parts
Part Overview
The P4SMA75C is a transient voltage suppressor (TVS) diode manufactured by Littelfuse Inc., designed for general-purpose overvoltage protection in surface-mount applications. This component features a 64.1V reverse standoff voltage, 108.15V maximum clamping voltage, and 4A peak pulse current capability in a DO-214AC (SMA) package. The product is currently obsolete, making equivalent and substitute parts necessary for ongoing design support and production requirements.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Manufacturer Part Number | P4SMA75C |
| Manufacturer | Littelfuse Inc. |
| Category | Transient Voltage Suppressors (TVS) |
| Type | Zener |
| Voltage - Reverse Standoff (Typ) | 64.1V |
| Voltage - Clamping (Max) @ Ipp | 108.15V |
| Current - Peak Pulse (10/1000µs) | 4A |
| Power - Peak Pulse | 400W |
| Package / Case | DO-214AC, SMA |
| Mounting Type | Surface Mount |
| Operating Temperature | -65°C ~ 150°C (TJ) |
| Product Status | Obsolete |
| RoHS Status | ROHS3 Compliant |
Substitute Part Grouping Explanation
Substitution of the P4SMA75C is determined by the following critical parameters:
- Reverse Standoff Voltage (Typ): Must be within ±10% of 64.1V to maintain circuit protection thresholds
- Clamping Voltage (Max) @ Ipp: Must not exceed 108.15V to prevent overstress on protected components
- Peak Pulse Current (10/1000µs): Must be at least 4A to handle transient events
- Power - Peak Pulse: Must be 400W or greater
- Package / Case: Must be DO-214AC (SMA) for mechanical and thermal compatibility
- Mounting Type: Surface mount configuration required
- Operating Temperature Range: Must support -65°C to 150°C minimum
Substitute parts are grouped into two categories based on electrical performance alignment with the original P4SMA75C specification.
Parameter Comparison
| Part Number | Manufacturer | Reverse Standoff (V) | Clamping Voltage (V) | Peak Pulse Current (A) | Power (W) | Temp Range (°C) | Product Status | RoHS Status |
|---|---|---|---|---|---|---|---|---|
| P4SMA75C | Littelfuse Inc. | 64.1 | 108.15 | 4 | 400 | -65 ~ 150 | Obsolete | ROHS3 Compliant |
| P4SMA75CA | Eaton - Electronics Division | 64.1 | 103 | 4 | 400 | -55 ~ 150 | Active | RoHS Compliant |
| SMAJ64CA | Meritek | 64 | 103 | 3.88 | 400 | -55 ~ 150 | Active | ROHS3 Compliant |
| SMAJ70CA | MDD | 70 | 113 | 4.6 | 400 | -50 ~ 150 | Active | ROHS3 Compliant |
| SMAJ75CA | Meritek | 75 | 121 | 3.31 | 400 | -55 ~ 150 | Active | ROHS3 Compliant |
| SMAJ58CE3/TR13 | Microchip Technology | 58 | 103 | 4.9 | 500 | -65 ~ 150 | Active | ROHS3 Compliant |
| SMAJ64CAE3/TR13 | Microchip Technology | 64 | 103 | 4.9 | 500 | -65 ~ 150 | Active | ROHS3 Compliant |
| SMAJ75CA-M3/5A | Vishay General Semiconductor - Diodes Division | 75 | 121 | 3.3 | 400 | -55 ~ 150 | Active | ROHS3 Compliant |
| SMAJP4KE75CA-TP | Micro Commercial Co | 64.1 | 103 | 4 | 400 | -55 ~ 175 | Active | Not Specified |
Engineering Selection Recommendations
Primary Substitute (Closest Match): P4SMA75CA (Eaton - Electronics Division) is the primary recommended substitute. It maintains identical reverse standoff voltage (64.1V), peak pulse current (4A), and power rating (400W) as the original P4SMA75C. The clamping voltage is reduced to 103V, which provides improved protection margins. This part is active in production with RoHS compliance and is available in high volume (22,600 pcs in stock).
Secondary Substitutes (Acceptable with Circuit Verification): SMAJ64CAE3/TR13 (Microchip Technology) and SMAJ64CA (Meritek) both maintain the 64V reverse standoff voltage within tolerance. SMAJ64CAE3/TR13 offers enhanced peak pulse current (4.9A) and power rating (500W), with extended temperature range (-65°C to 150°C) matching the original specification. SMAJ64CA provides equivalent electrical performance with active product status.
Alternative Substitutes (Application-Dependent): SMAJ58CE3/TR13 (Microchip Technology) features lower reverse standoff voltage (58V) but offers higher peak pulse current (4.9A) and power rating (500W). This part is suitable for applications where lower voltage thresholds are acceptable. SMAJ75CA and SMAJ75CA-M3/5A feature higher reverse standoff voltage (75V) and clamping voltage (121V), appropriate for circuits requiring higher voltage protection levels.
All recommended substitutes are available in DO-214AC (SMA) surface-mount package, maintain RoHS3 compliance, and support the required operating temperature range.
Frequently Asked Questions (FAQ)
Q: Can P4SMA75CA directly replace P4SMA75C without circuit modification? A: Yes. P4SMA75CA maintains the same reverse standoff voltage (64.1V), peak pulse current (4A), and power rating (400W). The reduced clamping voltage (103V vs 108.15V) provides improved protection margins and is compatible with the original circuit design.
Q: What is the difference between SMAJ64CA and SMAJ64CAE3/TR13? A: Both maintain 64V reverse standoff voltage and 103V clamping voltage. SMAJ64CAE3/TR13 offers higher peak pulse current (4.9A vs 3.88A), higher power rating (500W vs 400W), and extended temperature range (-65°C to 150°C vs -55°C to 150°C). SMAJ64CAE3/TR13 is recommended for applications requiring enhanced transient handling capability.
Q: Why do some substitutes have different clamping voltages? A: Clamping voltage variation reflects different device designs and manufacturing processes. Substitutes with lower clamping voltages (103V) provide tighter voltage regulation and improved component protection. Substitutes with higher clamping voltages (113V, 121V) are suitable for applications tolerating higher transient peaks.
Q: Are all substitute parts available in the same package? A: Yes. All listed substitutes use DO-214AC (SMA) surface-mount package, ensuring mechanical and thermal compatibility with the original P4SMA75C footprint.
Q: What is the minimum peak pulse current required for substitution? A: The substitute must support at least 4A peak pulse current to handle the same transient events as the original P4SMA75C. Parts with higher current ratings (4.9A) provide additional design margin.
Q: Which substitute offers the best temperature range coverage? A: SMAJ58CE3/TR13 and SMAJ64CAE3/TR13 both support -65°C to 150°C operating temperature, matching the original P4SMA75C specification. These parts are recommended for applications requiring extended low-temperature operation.
Q: Is RoHS compliance maintained across all substitutes? A: All recommended substitutes maintain RoHS3 compliance or equivalent RoHS certification, ensuring regulatory compliance for new designs and production.
Alternative Parts
SJ6012L2TP
Littelfuse Inc.
6 Alternative Parts
JMK107BBJ476MA-RE
Taiyo Yuden
10 Alternative Parts
GMK107BBJ475MA-T
Taiyo Yuden
5 Alternative Parts
SJ6020N2ARP
Littelfuse Inc.
3 Alternative Parts
SJ6025R2ATP
Littelfuse Inc.
4 Alternative Parts
2474-05L
API Delevan Inc.
1 Alternative Parts
4590R-684K
API Delevan Inc.
1 Alternative Parts
CM6560R-334
API Delevan Inc.
1 Alternative Parts
CM6460-104
API Delevan Inc.
1 Alternative Parts
5526-12
API Delevan Inc.
1 Alternative Parts