P4SMA7.5CA-Q Equivalent & Substitute Parts

Part Overview

The P4SMA7.5CA-Q is an active Transient Voltage Suppressor (TVS) diode manufactured by Bourns Inc., designed for telecom applications requiring transient overvoltage protection. This surface-mount component operates in the automotive grade classification with AEC-Q101 qualification. The part is actively produced and maintained in inventory, with 1143 units currently available. Substitute parts are identified when equivalent electrical performance and mechanical compatibility are required due to supply constraints, design flexibility, or application-specific requirements.

Substiute Parts

P4SMA7.5CA-Q

Bourns Inc.In Stock: 1182P4SMA7.5CA-Q Datasheet

Current PartRFQ

SMAJE6-0CAH

Eaton - Electronics DivisionIn Stock: 5373SMAJE6-0CAH Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the P4SMA7.5CA-Q is determined by strict alignment of the following electrical and mechanical parameters:

Critical Substitution Parameters:

• Voltage - Reverse Standoff (Typ): 6.4V nominal operating point
• Voltage - Clamping (Max) @ Ipp: 11.3V maximum clamp voltage
• Current - Peak Pulse (10/1000µs): 36.3A minimum pulse current handling
• Power - Peak Pulse: 400W dissipation capability
• Package / Case: DO-214AC (SMA) surface-mount form factor
• Bidirectional Channels: Single channel configuration
• Operating Temperature Range: -55°C to 150°C
• Grade and Qualification: Automotive grade with AEC-Q101 certification

The SMAJE6-0CAH from Eaton - Electronics Division qualifies as a substitute based on compatibility within the allowed parameter tolerances for this TVS diode category. Both components share identical package specifications, temperature operating ranges, automotive qualification status, and equivalent power dissipation ratings.

Parameter Comparison

Engineering Selection Recommendations

Both the P4SMA7.5CA-Q and SMAJE6-0CAH are active products with current manufacturing status and full automotive-grade compliance. Selection between these components is based on the following engineering criteria:

P4SMA7.5CA-Q (Bourns Inc.):

• Higher reverse standoff voltage (6.4V vs. 6.0V)
• Higher clamping voltage (11.3V vs. 10.3V)
• Lower peak pulse current (36.3A vs. 38.8A)
• Suitable for applications requiring higher voltage thresholds

SMAJE6-0CAH (Eaton - Electronics Division):

• Lower reverse standoff voltage (6.0V vs. 6.4V)
• Lower clamping voltage (10.3V vs. 11.3V)
• Higher peak pulse current (38.8A vs. 36.3A)
• Suitable for applications requiring higher current handling capacity
• Greater inventory availability (5351 units vs. 1143 units)

Both components maintain identical operating temperature ranges (-55°C to 150°C), power dissipation (400W), package form factor (DO-214AC/SMA), and regulatory compliance (AEC-Q101, ROHS3, REACH Unaffected). Component selection depends on whether the application prioritizes voltage threshold characteristics or current handling capacity within the specified parameter ranges.

Frequently Asked Questions (FAQ)

Q: Can the SMAJE6-0CAH directly replace the P4SMA7.5CA-Q in all applications?

A: Direct substitution is determined by application voltage and current requirements. The SMAJE6-0CAH operates at lower voltage thresholds (6.0V standoff, 10.3V clamp) but handles higher peak pulse current (38.8A). Verify that the lower clamping voltage is acceptable for the protected circuit before substitution.

Q: What is the significance of the voltage parameters in TVS diode selection?

A: Reverse standoff voltage determines the normal operating point without triggering protection. Breakdown voltage marks the threshold where the diode begins conducting. Clamping voltage is the maximum voltage the diode allows across the protected circuit during a transient event. These parameters must align with circuit protection requirements.

Q: Are both parts qualified for automotive applications?

A: Yes. Both the P4SMA7.5CA-Q and SMAJE6-0CAH carry automotive-grade classification with AEC-Q101 qualification, meeting automotive industry reliability and quality standards.

Q: Do package differences affect substitution?

A: No. Both components use identical DO-214AC (SMA) surface-mount packaging, ensuring mechanical and thermal compatibility on printed circuit boards without layout modifications.

Q: What does the peak pulse current specification indicate?

A: Peak pulse current (10/1000µs) specifies the maximum transient current the TVS diode can safely conduct during a 10-microsecond pulse with 1000-microsecond spacing. The SMAJE6-0CAH handles 38.8A compared to the P4SMA7.5CA-Q at 36.3A, providing additional margin for high-energy transient events.

Q: Are there moisture sensitivity concerns with either part?

A: No. Both components carry MSL Rating 1 (Unlimited), indicating no moisture sensitivity limitations during storage or handling.

Q: How do RoHS and REACH compliance affect part selection?

A: Both parts are ROHS3 compliant and REACH unaffected, meeting environmental and regulatory requirements for commercial and automotive applications without additional compliance considerations.