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CD214A-T58ALF Equivalent & Substitute Parts
Part Overview
The CD214A-T58ALF is a unidirectional Zener transient voltage suppressor (TVS) diode manufactured by Bourns Inc., designed for general-purpose overvoltage protection in surface-mount applications. This component features a 58V reverse standoff voltage, 93.6V maximum clamping voltage, and 4.3A peak pulse current capability in a DO-214AC (SMA) package. The part is classified as obsolete, making identification of active equivalent and substitute components essential for ongoing design support and procurement.
Substiute Parts
Key Parameters
| Parameter | Value | Unit |
|---|---|---|
| Voltage - Reverse Standoff (Typ) | 58 | V |
| Voltage - Breakdown (Min) | 64.4 | V |
| Voltage - Clamping (Max) @ Ipp | 93.6 | V |
| Current - Peak Pulse (10/1000µs) | 4.3 | A |
| Power - Peak Pulse | 400 | W |
| Operating Temperature Range | -55 to 150 | °C (TJ) |
| Package / Case | DO-214AC, SMA | — |
| Mounting Type | Surface Mount | — |
| Type | Zener | — |
| Unidirectional Channels | 1 | — |
| RoHS Status | ROHS3 Compliant | — |
| Moisture Sensitivity Level (MSL) | 1 (Unlimited) | — |
Substitute Part Grouping Explanation
Substitution of the CD214A-T58ALF is determined by strict electrical and mechanical parameter matching within the following criteria:
Primary Substitution Criteria:
- Voltage - Reverse Standoff (Typ): 58V ±tolerance
- Voltage - Clamping (Max) @ Ipp: 93.6V ±tolerance
- Current - Peak Pulse (10/1000µs): 4.3A ±tolerance
- Package / Case: DO-214AC (SMA)
- Mounting Type: Surface Mount
- Type: Zener, Unidirectional (1 channel)
- Power - Peak Pulse: 400W minimum
Direct Equivalents maintain all electrical parameters within specification limits and identical package configuration.
Similar Substitutes maintain the same reverse standoff voltage (58V) and package type but may vary in clamping voltage, peak pulse current, or power dissipation within acceptable operating ranges for general-purpose TVS applications.
Parameter Comparison
| Part Number | Manufacturer | VWM (V) | Clamp (V) | Ipp (A) | Power (W) | Temp Range (°C) | Status |
|---|---|---|---|---|---|---|---|
| CD214A-T58ALF | Bourns Inc. | 58 | 93.6 | 4.3 | 400 | -55 to 150 | Obsolete |
| SMAJ58A | MDD | 58 | 93.6 | 4.3 | 400 | -50 to 150 | Active |
| P4SMA68A-M3/5A | Vishay | 58.1 | 92 | 4.3 | 400 | -65 to 150 | Active |
| P4SMA68A-M3/61 | Vishay | 58.1 | 92 | 4.3 | 400 | -65 to 150 | Active |
| SM4T68AY | STMicroelectronics | 58 | 121 | 19 (8/20µs) | 400 | -55 to 150 | Active |
| SMA6J58A-TR | STMicroelectronics | 58 | 100 | 33 (8/20µs) | 600 | -55 to 175 | Active |
| P4SMA62A-M3/5A | Vishay | 53 | 85 | 4.7 | 400 | -65 to 150 | Active |
| P4SMA62A-M3/61 | Vishay | 53 | 85 | 4.7 | 400 | -65 to 150 | Active |
| SMAJ51A-M3/5A | Vishay | 51 | 82.4 | 4.9 | 400 | -55 to 150 | Active |
| SMAJ51A-M3/61 | Vishay | 51 | 82.4 | 4.9 | 400 | -55 to 150 | Active |
Engineering Selection Recommendations
Direct Equivalent (Recommended Primary Replacement):
SMAJ58A (MDD) is the direct electrical equivalent to CD214A-T58ALF, maintaining identical reverse standoff voltage (58V), clamping voltage (93.6V), and peak pulse current (4.3A). This part is currently in active production status with ROHS3 compliance and unlimited moisture sensitivity rating. The operating temperature range is -50°C to 150°C, which covers the majority of general-purpose applications. This component is the preferred choice for direct substitution.
Active Alternatives with Comparable Performance:
P4SMA68A-M3/5A and P4SMA68A-M3/61 (Vishay TransZorb® series) provide near-equivalent performance with 58.1V reverse standoff voltage and 92V clamping voltage. These parts maintain 4.3A peak pulse current and 400W power dissipation. The extended operating temperature range (-65°C to 150°C) and active product status make these suitable alternatives. Both variants are available in Tape & Reel packaging.
SM4T68AY (STMicroelectronics TRANSIL™ series) maintains the 58V reverse standoff voltage but features higher peak pulse current (19A at 8/20µs) and clamping voltage (121V). This part includes AEC-Q101 automotive qualification and is suitable for applications requiring enhanced transient protection. The higher current capability provides additional design margin.
SMA6J58A-TR (STMicroelectronics TRANSIL™ series) maintains the 58V reverse standoff voltage with significantly higher peak pulse current (33A at 8/20µs) and power dissipation (600W). The extended upper operating temperature limit (175°C) and higher current rating provide enhanced protection for demanding applications.
Lower Voltage Alternatives:
P4SMA62A-M3/5A, P4SMA62A-M3/61, SMAJ51A-M3/5A, and SMAJ51A-M3/61 represent lower voltage options with reverse standoff voltages of 53V and 51V respectively. These parts are suitable only if circuit design permits operation at reduced protection thresholds.
Frequently Asked Questions (FAQ)
Q: Can SMAJ58A directly replace CD214A-T58ALF without circuit modification?
A: Yes. SMAJ58A maintains identical electrical specifications: 58V reverse standoff, 93.6V clamping voltage, 4.3A peak pulse current, and 400W power dissipation. Both use DO-214AC (SMA) surface-mount packaging. The only difference is the operating temperature minimum (-50°C vs. -55°C), which is acceptable for most applications.
Q: What is the difference between the Vishay P4SMA68A variants (M3/5A vs. M3/61)?
A: Both P4SMA68A-M3/5A and P4SMA68A-M3/61 are electrically identical. The suffix designates packaging configuration: M3/5A indicates Tape & Reel in 5-inch reels, while M3/61 indicates Tape & Reel in 13-inch reels. Selection depends on procurement and assembly requirements.
Q: Why do STMicroelectronics parts (SM4T68AY, SMA6J58A-TR) show higher peak pulse currents?
A: These parts use different pulse waveform specifications. The CD214A-T58ALF and most Vishay parts specify 10/1000µs pulse waveforms, while STMicroelectronics parts specify 8/20µs waveforms. The 8/20µs standard allows higher peak current values for the same power dissipation. Both waveform standards are valid for TVS diode characterization; selection depends on actual transient event characteristics in the application.
Q: Are lower voltage alternatives (51V, 53V) acceptable substitutes?
A: Lower voltage parts (SMAJ51A, P4SMA62A) are not direct substitutes. They provide protection at reduced voltage thresholds. Use only if circuit design explicitly permits operation at 51V or 53V standoff voltages. Verify that protected components can tolerate these lower protection levels.
Q: What packaging options are available for substitute parts?
A: All listed substitutes use DO-214AC (SMA) surface-mount packaging, matching the original CD214A-T58ALF. Tape & Reel (TR) and Cut Tape (CT) packaging options are available from various manufacturers. Confirm packaging format with supplier before procurement.
Q: Are all substitute parts RoHS3 compliant?
A: Yes. All listed substitute parts maintain ROHS3 compliance and unlimited moisture sensitivity rating (MSL 1), matching the original component's environmental specifications.
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