CDDFN2-T5V0SC - 5V Bidirectional TVS Diode, 9.5V Clamp | Bourns
MPN: CDDFN2-T5V0SC ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $0.42 | $0.42 |
| 10 | $0.36 | $3.60 |
| 100 | $0.27 | $27.00 |
| 500 | $0.21 | $105.00 |
| 1,000 | $0.17 | $170.00 |
| 5,000 | $0.13 | $650.00 |
CDDFN2-T5V0SC Overview
A Transient Voltage Suppressor (TVS) diode is a clamping semiconductor device designed to limit transient overvoltages by avalanching into a low-impedance state when its breakdown voltage is exceeded. Within the power management hierarchy, TVS diodes sit alongside ESD protection arrays and varistors as the first line of defense for sensitive downstream ICs, providing sub-nanosecond response and a defined non-linear V-I curve. Bidirectional TVS parts such as the CDDFN2-T5V0SC are particularly suited to AC-coupled signal lines and differential data buses where polarity can reverse.
The CDDFN2-T5V0SC delivers 18 A peak pulse handling on the 8/20 µs surge waveform and is rated to absorb ESD strikes per IEC 61000-4-2 at both contact and air discharge levels. Its ultra-small 1.0 × 0.6 mm DFN footprint allows placement immediately at the connector, minimizing parasitic loop area and improving coupling efficiency into the suppressor. Low clamping factor and low dynamic resistance keep the residual voltage seen by downstream ICs well below their absolute-maximum ratings.
Internally the device uses a Zener-based avalanche junction combined with a steering-diode bridge, giving symmetric positive and negative clamping. The low leakage at 5 V bias preserves battery life in always-connected portable designs, while the wide operating temperature range supports industrial and outdoor deployments. The leadless DFN-2 package offers a low-inductance current path that outperforms leaded alternatives such as SOD-123 at multi-kilovolt ESD.
Typical applications include USB Type-C data line protection on smartphones, tablets, and laptops, HDMI/MIPI/LVDS interface protection on display panels, antenna port ESD protection on cellular and Wi-Fi modules, headset audio jack protection, and portable medical handheld devices. The wide surge rating also covers industrial sensor interfaces and IoT edge nodes that may be exposed to EFT or lightning-induced surges on long cable harnesses.
Place the CDDFN2-T5V0SC as close as physically possible to the external connector pin, with a short, direct ground return to the chassis or board ground pour. Keep the trace between the protected line and the device under 2 mm to maximize ESD suppression, and avoid routing any sensitive analog signal traces underneath the pad to prevent coupling of residual transients.
This page synthesizes distributor pricing tiers, verified drop-in alternatives, and PCB-layout guidance that go beyond what is shown on the Bourns datasheet, giving engineers a single source for selection, sourcing, and design-in.
Drop-in alternatives for CDDFN2-T5V0SC — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Variants in this series
Same-series models that are drop-in compatible with CDDFN2-T5V0SC (same form factor and footprint) — differing in Package.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
CDDFN2-T3V3SC
✅ Drop-In✓ In Stock
$0.18 / Unit
View Datasheet →CDDFN2-T12SC
✅ Drop-In📋 Reference alternative (not in catalog)
CDDFN2-T5.0LC
✅ Drop-In📋 Reference alternative (not in catalog)
CDDFN2-T5C
✅ Drop-In📋 Reference alternative (not in catalog)
CDDFN2-T5V0C
✅ Drop-In📋 Reference alternative (not in catalog)
CDDFN2-T5V0SC Maximum Ratings & Electrical Characteristics
| Device Type | Bidirectional TVS Diode (ESD/EFT/Surge Protection) |
| Working Voltage (Vrwm) | 5 V |
| Clamping Voltage (Vc) @ 8/20 µs | 9.5 V at 18 A |
| Peak Pulse Current (Ipp) 8/20 µs | 18 A |
| Polarity | Bidirectional |
| Package | 2-pin DFN (1.0 × 0.6 mm) |
| Mounting Type | Surface Mount |
| RoHS Status | Compliant |
| Lead-Free / Halogen-Free | Yes / Yes |
CDDFN2-T5V0SC Pin Configuration
| Pin 1 | Line — Protected line (I/O, bidirectional) |
| Pin 2 | GND — Ground return for transient current |
Typical Applications
CDDFN2-T5V0SC is suitable for 6 applications: USB Type-C Data Line ESD Protection, MIPI D-PHY / CSI-2 Camera Interface Protection, HDMI / DisplayPort TMDS Line Protection, Cellular/Wi-Fi Antenna Port ESD Protection, Headset Audio Jack Protection, Industrial Sensor / IoT Edge Node ESD/EFT Protection.
USB Type-C Data Line ESD Protection
The CDDFN2-T5V0SC's 5 V working voltage and 9.5 V clamping voltage at 18 A make it a direct fit for USB Type-C SBU, D+/D-, and legacy USB data pairs where bidirectional ESD strikes must be clamped without disturbing the DC bias. Its miniature 1.0 × 0.6 mm DFN footprint allows placement immediately at the Type-C receptacle, keeping the protected trace shorter than 2 mm and maximizing IEC 61000-4-2 suppression. Compared to unidirectional TVS arrays, the bidirectional architecture needs no external steering, simplifying BOM on the CC and SBU lines.
Recommended
MIPI D-PHY / CSI-2 Camera Interface Protection
MIPI D-PHY differential pairs on smartphone camera and display interfaces swing on the order of ±200 mV around a common-mode that must remain within the PHY's input range; any ESD strike on the flex cable can exceed the PHY's absolute-max ratings. The CDDFN2-T5V0SC provides bidirectional clamping with sub-nanosecond response and a clamping factor compatible with common 1.8 V and 2.8 V MIPI PHYs. Its small DFN footprint allows one suppressor per differential pair directly at the BTB connector, suppressing common-mode and differential-mode transients alike.
Recommended
HDMI / DisplayPort TMDS Line Protection
HDMI and DisplayPort TMDS pairs operate at multi-gigabit data rates where line capacitance directly affects signal-integrity eye margins, yet the connectors remain exposed to user-touch ESD. The CDDFN2-T5V0SC's bidirectional clamping and DFN2 footprint let designers place one suppressor per TMDS pair close to the HDMI receptacle. For lower-speed TMDS rates up to 6 Gbps, the part's line-to-line capacitance budget is typically acceptable; for 8K/10K HDMI 2.1 deployments, verify capacitance against the PHY's eye-mask budget.
Recommended
Cellular/Wi-Fi Antenna Port ESD Protection
Cellular and Wi-Fi antenna ports are routinely exposed to human-body ESD during handheld operation, and the front-end LNA/Modem ICs typically have very limited ESD tolerance. The CDDFN2-T5V0SC's 18 A 8/20 µs surge rating and bidirectional clamping make it suitable for shunt protection on the antenna feedline ahead of the SAW filter or LNA. The 1.0 × 0.6 mm DFN footprint fits between the antenna connector and the RF front-end, minimizing insertion-loss contribution while clamping direct-discharge events to below the LNA's absolute-maximum rating.
Recommended
Headset Audio Jack Protection
The 3.5 mm headset jack on handheld devices is one of the most ESD-exposed ports because the user frequently touches the plug during insertion and removal. The CDDFN2-T5V0SC provides bidirectional clamping on the left/right audio channels and the microphone bias line, with a 5 V working voltage that does not disturb the audio DC bias. Compared to discrete Zener-string protection, the integrated TVS offers tighter clamping tolerance and lower leakage, preserving the audio SNR floor on premium portable devices.
Recommended
Industrial Sensor / IoT Edge Node ESD/EFT Protection
Industrial sensor cables, RS-485 ports, and IoT edge nodes with long cable harnesses are exposed to both ESD and electrical fast transient (EFT) events that can exceed the transient ratings of unprotected I/O. The CDDFN2-T5V0SC's 18 A 8/20 µs surge rating covers typical EFT-burst events per IEC 61000-4-4, while its bidirectional architecture is compatible with differential signaling on RS-485, CAN, and 4–20 mA loops. Place one suppressor per signal pair close to the connector and add a small ferrite in series to build a robust transient barrier.
Recommended
Recommended Products Summary
Engineering reference data for CDDFN2-T5V0SC — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | CDDFN2-T3V3SC | CDDFN2-T12SC | CDDFN2-T5.0LC | CDDFN2-T5C | CDDFN2-T5V0C |
|---|---|---|---|---|---|---|
| Brand | Bourns | Bourns | Bourns | Bourns | Bourns | Bourns |
| Package | 2-pin DFN (1.0 × 0.6 mm) | 2-pin DFN (1.0 × 0.6 mm) - same | 2-pin DFN (1.0 × 0.6 mm) - same | 2-pin DFN (1.0 × 0.6 mm) - same | 2-pin DFN (1.0 × 0.6 mm) - same | 2-pin DFN (1.0 × 0.6 mm) - same |
| Working Voltage (Vrwm) | 5 V | 3.3 V | 12 V | 5 V | 5 V | 5 V |
| Polarity | Bidirectional | Bidirectional | Bidirectional | Bidirectional | Bidirectional | Bidirectional |
| Mounting Type | Surface Mount | Surface Mount | Surface Mount | Surface Mount | Surface Mount | Surface Mount |
| RoHS Compliant | Yes | Yes | Yes | Yes | Yes | Yes |
| Application Focus | 5 V data-line ESD/EFT | 3.3 V data-line ESD | 12 V data-line ESD | 5 V high-surge | 5 V alternate | 5 V low-cap |
Key Differentiators
- Bidirectional clamping in a single 1.0 × 0.6 mm DFN (vs Discrete Zener + steering-diode string)
- 18 A peak pulse current on 8/20 µs in ultra-small package (vs SOD-123 leaded TVS (e.g., PESD5V0L1BA))
- Wide Bourns CDDFN2 family coverage at same footprint (vs Cross-brand DFN2 TVS without family breadth)
Design Notes
Place the CDDFN2-T5V0SC as physically close to the external connector pin as the PCB layout allows. Keep the trace between the protected line and the device under 2 mm to minimize parasitic loop inductance, which directly reduces the residual voltage that downstream ICs see during an ESD strike. A direct, low-impedance ground return from pin 2 to the board ground pour is critical - avoid sharing the GND via with other noisy circuits.
Follow the Bourns recommended land pattern exactly. The 2-pin DFN (1.0 × 0.6 mm) package has very small solder pads and requires precise stencil aperture design (0.2–0.25 mm aperture, 0.1 mm thickness). Ensure the DFN center paddle, if present, is soldered to the ground pad for thermal sinking and stable clamping behavior. Avoid placing any signal traces or vias directly beneath the package body.
Do not use the CDDFN2-T5V0SC on signal lines whose normal operating voltage exceeds 5 V - the device will enter avalanche conduction and corrupt the signal. Also avoid placing the device on high-speed lines without first verifying that its line-to-line capacitance fits the signal-integrity budget; for USB 3.x, HDMI 2.1, or MIPI C-PHY at full speed, choose a lower-capacitance TVS variant. Finally, do not rely solely on the TVS for EFT protection on long industrial cables - add a series ferrite or common-mode choke upstream.
Compliance Information
RoHS compliant per Bourns product page. Not AEC-Q100 qualified - this part targets consumer/portable electronics ESD/EFT, not automotive.
