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CDDFN2-T5.0C Equivalent & Substitute Parts
Part Overview
The CDDFN2-T5.0C is a transient voltage suppressor (TVS) diode manufactured by Bourns Inc., designed for general-purpose overvoltage protection in surface-mount applications. This bidirectional Zener diode features a 5V reverse standoff voltage with 15V maximum clamping voltage and 5A peak pulse current capability in a compact 2-DFN (1x0.6) package. The part is classified as obsolete, necessitating identification of active equivalent and substitute components that maintain electrical and mechanical compatibility for new designs and production continuity.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Manufacturer Part Number | CDDFN2-T5.0C |
| Manufacturer | Bourns Inc. |
| Category | Transient Voltage Suppressors (TVS) |
| Type | Zener |
| Bidirectional Channels | 1 |
| Voltage - Reverse Standoff (Typ) | 5V |
| Voltage - Breakdown (Min) | 6V |
| Voltage - Clamping (Max) @ Ipp | 15V |
| Current - Peak Pulse (8/20µs) | 5A |
| Power - Peak Pulse | 75W |
| Capacitance @ 1MHz | 15pF |
| Operating Temperature | -40°C ~ 125°C (TA) |
| Mounting Type | Surface Mount |
| Package / Case | 2-UFDFN |
| Supplier Device Package | 2-DFN (1x0.6) |
| Product Status | Obsolete |
| RoHS Status | ROHS3 Compliant |
| MSL Rating | 1 (Unlimited) |
Substitute Part Grouping Explanation
Substitution of the CDDFN2-T5.0C is determined by the following critical electrical and mechanical parameters:
Primary Substitution Criteria:
- Reverse standoff voltage: 5V nominal
- Bidirectional channel configuration: 1 channel
- Zener diode type classification
- Surface-mount technology
- RoHS3 compliance and MSL rating compatibility
Secondary Compatibility Factors:
- Voltage clamping range: 12V to 25V maximum
- Peak pulse current: 3A to 11A (8/20µs)
- Peak pulse power: 60W to 150W
- Operating temperature range: minimum -40°C lower bound
- Package form factor: 2-DFN, 0402, or SOD-882 packages
Substitute parts are grouped into three categories based on package compatibility: 2-DFN form factor (direct package match), 0402/SOD-923F miniature packages (alternative form factors with equivalent footprint density), and SOD-882 packages (alternative miniature options).
Parameter Comparison
| Part Number | Manufacturer | Reverse Standoff (V) | Breakdown Min (V) | Clamping Max (V) | Peak Pulse Current (A) | Peak Pulse Power (W) | Package | Status |
|---|---|---|---|---|---|---|---|---|
| CDDFN2-T5.0C | Bourns Inc. | 5 | 6 | 15 | 5 | 75 | 2-DFN (1x0.6) | Obsolete |
| CDDFN2-T5.0LC | Bourns Inc. | 5 | 7 | 25 | — | — | 2-DFN (1x0.6) | Active |
| D5V0L1B2LPS-7B | Diodes Incorporated | 5 | 6 | 14 | 6 | 84 | 2-UFDFN | Active |
| CPDQR5V0-HF | Comchip Technology | 5 | 5.1 | 16 | 5 | 75 | 0402 (1006 Metric) | Last Time Buy |
| CPDQR5V0HE-HF | Comchip Technology | 5 | 5.5 | 16 | 8 | 128 | 0402 (1006 Metric) | Last Time Buy |
| ACPDQC5V0R-HF | Comchip Technology | 5 | 5.6 | 12 | 11 | — | 0402 (1006 Metric) | Active |
| CPDQC5V0CSP-HF | Comchip Technology | 5 | 6 | 20 | 3 | 60 | 0402 (1006 Metric) | Active |
| ESDALC5-1BM2 | STMicroelectronics | 5 | 5.8 | — | — | 150 | SOD-882 | Active |
| ESDALC5-1BT2 | STMicroelectronics | 5 | 5.8 | — | — | 150 | SOD-882 | Active |
Engineering Selection Recommendations
Direct Package Replacement (2-DFN Form Factor):
CDDFN2-T5.0LC (Bourns Inc., Active) provides the closest form factor match with identical 2-DFN (1x0.6) packaging. This part maintains the same reverse standoff voltage (5V) and bidirectional channel configuration. The higher clamping voltage (25V typical versus 15V) and increased breakdown minimum (7V versus 6V) represent acceptable parameter shifts for general-purpose protection applications. This part is currently in active production status.
D5V0L1B2LPS-7B (Diodes Incorporated, Active) offers 2-UFDFN packaging with equivalent electrical performance. Clamping voltage is 14V (within 1V of the original), peak pulse current is 6A (exceeding the original 5A specification), and peak pulse power is 84W. This part carries AEC-Q101 automotive qualification and operates across -65°C to 150°C, providing extended temperature range capability. Active production status ensures long-term availability.
Alternative Package Options (0402/SOD-923F Form Factor):
CPDQR5V0-HF (Comchip Technology, Last Time Buy) matches electrical specifications precisely: 5V reverse standoff, 16V clamping, 5A peak pulse current, and 75W peak pulse power. The 0402 package provides equivalent component density to the 2-DFN form factor. However, Last Time Buy status indicates limited future availability.
CPDQR5V0HE-HF (Comchip Technology, Last Time Buy) provides enhanced current handling (8A versus 5A) and higher peak pulse power (128W versus 75W) in the same 0402 package. Last Time Buy status applies.
ACPDQC5V0R-HF (Comchip Technology, Active) is an automotive-grade alternative with AEC-Q101 qualification, 12V clamping voltage, and 11A peak pulse current capability. Extended operating temperature range (-40°C to 150°C) and active production status support long-term design continuity.
CPDQC5V0CSP-HF (Comchip Technology, Active) offers 20V clamping voltage with reduced peak pulse current (3A) and 60W power rating. Extended temperature range (-55°C to 150°C) and active status provide design flexibility for lower-current applications.
Alternative Package Options (SOD-882 Form Factor):
ESDALC5-1BM2 and ESDALC5-1BT2 (STMicroelectronics, Active) both provide 5V reverse standoff voltage with 150W peak pulse power capability. The SOD-882 package represents a different form factor requiring PCB layout modification. Both parts are in active production with extended temperature range (-55°C to 150°C).
Compliance and Certification:
All substitute parts maintain ROHS3 compliance and MSL rating 1 (Unlimited) moisture sensitivity, matching the original part specifications. Parts with AEC-Q101 qualification (D5V0L1B2LPS-7B, ACPDQC5V0R-HF) provide automotive-grade reliability for applications requiring enhanced qualification documentation.
Frequently Asked Questions (FAQ)
Q: Can CDDFN2-T5.0LC be used as a direct replacement for CDDFN2-T5.0C?
A: Yes. Both parts share identical 2-DFN (1x0.6) packaging, 5V reverse standoff voltage, and single bidirectional channel configuration. The CDDFN2-T5.0LC has higher clamping voltage (25V typical) and breakdown minimum (7V), which are acceptable parameter increases for general-purpose transient suppression. CDDFN2-T5.0LC is in active production status, addressing the obsolescence of the original part.
Q: What are the key differences between 2-DFN and 0402 package substitutes?
A: The 2-DFN (1x0.6) package and 0402 (1006 Metric) package have different physical dimensions and PCB footprints. The 2-DFN is slightly larger but maintains the same component density class. Substitution requires PCB layout verification to confirm footprint compatibility. Electrical performance parameters remain equivalent across both package types when comparing parts with matching voltage and current ratings.
Q: Are Last Time Buy parts suitable for new designs?
A: Last Time Buy status indicates limited future availability. CPDQR5V0-HF and CPDQR5V0HE-HF should not be selected for new designs requiring long-term production support. Active status parts (CDDFN2-T5.0LC, D5V0L1B2LPS-7B, ACPDQC5V0R-HF, CPDQC5V0CSP-HF, ESDALC5-1BM2, ESDALC5-1BT2) provide assured availability for ongoing production.
Q: What is the significance of AEC-Q101 qualification?
A: AEC-Q101 qualification indicates the part meets automotive industry reliability standards for discrete semiconductors. Parts with this certification (D5V0L1B2LPS-7B, ACPDQC5V0R-HF) are suitable for automotive applications and applications requiring enhanced reliability documentation. Non-qualified parts are suitable for general industrial and consumer applications.
Q: How do clamping voltage differences affect circuit protection?
A: Clamping voltage determines the maximum voltage the TVS diode allows across the protected circuit during transient events. The original CDDFN2-T5.0C clamps at 15V maximum. Substitute parts range from 12V to 25V clamping voltage. Lower clamping voltages (12V) provide tighter protection margins; higher clamping voltages (20V–25V) allow greater voltage excursions. Selection depends on the protected circuit's maximum allowable voltage specification.
Q: Can SOD-882 package parts replace 2-DFN parts?
A: SOD-882 package parts (ESDALC5-1BM2, ESDALC5-1BT2) have different physical dimensions and require PCB footprint redesign. They are not pin-compatible drop-in replacements. However, they provide equivalent electrical protection with 5V reverse standoff voltage and higher peak pulse power (150W). Use SOD-882 alternatives only when PCB layout modification is feasible.
Q: What does MSL rating 1 (Unlimited) mean for component handling?
A: MSL (Moisture Sensitivity Level) rating 1 indicates the component has unlimited shelf life and requires no special moisture control during storage or handling. All substitute parts maintain this rating, matching the original part's handling requirements and eliminating additional moisture management procedures.
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