onsemi ESD5101FCT5G
- Part No.:
- ESD5101FCT5G
- Manufacturer:
- onsemi
- Category:
- TVS Diodes
- Package:
- 01005 (0402 Metric)
- Datasheet:
-
ESD5101FCT5G.pdf
- Description:
- TVS DIODE 3.3VWM 6.5VC 2DSN
- Quantity:
- Payment:

- Shipping:

Inventory:15,205
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Product details
Overview
ESD5101FCT5G from onsemi is a unidirectional ESD protection diode in DSN2 (01005) package, designed for I/O line protection in space-constrained portable electronics. It delivers 3.3 V reverse working voltage, ≤5.5 pF junction capacitance at 0 V, and clamps to 5.5 V at 8 A TLP current-enabling high-speed signal integrity in USB 2.0, MIPI D-PHY, and touch interface applications.
For engineers reviewing the ESD5101FCT5G datasheet, pinout, applications, or equivalent options, this page provides verified electrical specs, validated 2-pin DSN2 layout data, IEC 61000−4−2 Level 4 compliance details, and direct alternative comparisons for ESD-hardened mobile design.
Technical Context
The ESD5101FCT5G integrates a single silicon avalanche diode between I/O and GND in a monolithic DSN2 die-attach structure. Its low-leakage (≤0.1 µA at 3.3 V) and fast response (<1 ns) enable protection without signal distortion in high-frequency interfaces.
It operates across −55 °C to +125 °C junction temperature and meets IEC 61000−4−2 ±15 kV contact/air discharge requirements. The device uses no external bias and relies solely on intrinsic diode clamping-no control logic or power supply required.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reverse Working Voltage | 3.3 V - Maximum continuous DC voltage applied to I/O without leakage exceeding 0.1 µA; sets upper limit for protected bus voltage. |
| Breakdown Voltage | 3.68–6.5 V at 1 mA - Confirmed turn-on threshold range; ensures reliable triggering before system-level damage occurs. |
| Clamping Voltage | 5.5 V at 8 A TLP - Peak voltage seen by protected IC during 8 A transient; critical for safeguarding 3.3 V logic inputs. |
| Junction Capacitance | 5.5 pF at 0 V, 1 MHz - Measured signal-line loading; enables <1% insertion loss up to 500 MHz in high-speed traces. |
| ESD Rating | ±15 kV IEC 61000−4−2 contact/air - Validated immunity level matching smartphone drop-test and handling requirements. |
| Package Size | 0.435 × 0.23 mm (01005) - Smallest standardized surface-mount footprint for ESD diodes; saves >60% board area vs. 0201. |
Pinout & Package
ESD5101FCT5G uses the DSN2 (Dual-Side No-Lead) 2-terminal package per Case 152AK, with solderable terminals on opposite long edges. The package has no internal leads-both terminals connect directly to die metallization via copper pillars.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Terminal 1 | I/O Anode | Connected to protected signal line (e.g., USB D+, MIPI Data+); conducts ESD current toward GND when voltage exceeds breakdown. |
| Terminal 2 | Cathode / GND | Connected to system ground plane; provides low-inductance return path for ESD transients; must be routed with minimal loop area. |
Key Features
| Feature | Design Value |
|---|---|
| Low Capacitance | 5.5 pF max at 0 V - Preserves signal rise/fall times in 480 Mbps USB 2.0 and 1.5 Gbps MIPI D-PHY links. |
| Ultra-Small Footprint | 0.435 × 0.23 mm - Enables placement directly at connector or IC pad, minimizing stub length and inductive coupling. |
| IEC 61000−4−2 Level 4 Compliance | ±15 kV contact/air - Meets highest standard for handheld consumer electronics without external shielding. |
| Pb-Free & RoHS Compliant | Halogen-free/BFR-free construction - Supports lead-free reflow profiles (260 °C peak) and environmental compliance programs. |
Applications
| Smartphone Front-Panel Interface | Wearable Touch Controller Protection |
|---|---|
|
Use Scenario: Protecting capacitive touch sensor I/O lines on curved OLED displays exposed to finger ESD events. IC Role / Device Role / Timing Role: Unidirectional clamping diode placed between touch controller GPIO and display flex cable. Use Value: 5.5 pF capacitance prevents touch response latency; 5.5 V clamping avoids false triggers or reset of 3.3 V touch IC. |
Use Scenario: Shielding HRM (heart rate monitor) photodiode analog input from wristband strap discharge. IC Role / Device Role / Timing Role: Ground-referenced ESD shunt on ADC input path, located within 2 mm of sensor pad. Use Value: 01005 size allows placement adjacent to 0.4 mm pitch sensor pads; ±15 kV rating covers belt-clip and pocket insertion events. |
| USB 2.0 OTG Port Protection | MIPI D-PHY Camera Interface |
|
Use Scenario: Safeguarding USB D+/D− lines in dual-role OTG ports where host/peripheral switching increases ESD exposure. IC Role / Device Role / Timing Role: Dual-diode array (one per line) with independent GND connections to minimize crosstalk. Use Value: Sub-6 V clamping ensures USB transceiver PHY remains within absolute maximum ratings during ±8 kV contact discharge. |
Use Scenario: Protecting high-speed MIPI D-PHY data lanes (CLK+/−, DATA+/−) connecting image sensor to SoC in ultra-thin modules. IC Role / Device Role / Timing Role: One ESD5101FCT5G per differential pair, mounted at sensor-side connector to suppress common-mode transients. Use Value: 5.5 pF capacitance maintains >90% signal amplitude at 1 GHz; 01005 footprint avoids trace detours in 0.15 mm pitch routing. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar ESD protection applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ESD5111FCT5G | Same family, WLCSP2 (0.6 × 0.3 mm) package; 6.5 pF capacitance; identical 3.3 V VRWM and ±15 kV rating. | Larger footprint allows easier rework but adds 2.5× board area; slightly higher capacitance limits use in >800 Mbps interfaces. | Select ESD5111FCT5G only if 01005 placement or reflow yield is problematic; otherwise ESD5101FCT5G preferred for miniaturized designs. |
| TPD2E001DRYR | Texas Instruments part in SOT-5X3 (1.0 × 0.6 mm); 12 pF capacitance; 5 V VRWM; ±8 kV IEC 61000−4−2 rating. | Higher clamping (7.5 V at 4 A), larger size, and lower ESD rating make it unsuitable for premium smartphones or wearables requiring Level 4. | Choose TPD2E001DRYR only for cost-sensitive industrial controls with 5 V rails and lower ESD threat profiles-not as a drop-in replacement. |
Compared with ESD5111FCT5G and TPD2E001DRYR, ESD5101FCT5G uniquely combines 01005 size, 5.5 pF capacitance, and full IEC Level 4 compliance-making it the only option for next-gen wearable and foldable display ESD protection where board space and signal fidelity are co-constrained.
Availability
ESD5101FCT5G is available at Aetrix Electronics and suitable for smartphone front-panel interfaces, wearable touch controllers, USB 2.0 OTG ports, and MIPI D-PHY camera interfaces requiring stable component supply and guaranteed long-term sourcing.
Supply support for ESD5101FCT5G includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
onsemi (formerly ON Semiconductor) is a global semiconductor supplier specializing in energy-efficient power, analog, sensing, and connectivity solutions for automotive, industrial, cloud, and consumer markets.
The ESD51x1 series was developed specifically for ultra-compact, high-fidelity ESD protection in portable electronics-prioritizing minimal capacitance, smallest possible footprint, and full IEC 61000−4−2 Level 4 compliance without performance trade-offs.
FAQ
What is the exact package type and dimensions of ESD5101FCT5G?
ESD5101FCT5G uses the DSN2 package (Case 152AK), measuring 0.435 mm × 0.23 mm with 0.27 mm terminal pitch. It is a 2-terminal, leadless micro-package with solderable terminals on opposite long edges-confirmed in the official onsemi mechanical drawing dated 17 Feb 2015.
Does ESD5101FCT5G support bidirectional ESD protection?
No, ESD5101FCT5G is a unidirectional diode configured for I/O-to-GND protection only. Its schematic shows a single anode-cathode path; it does not protect against negative transients on GND or positive transients on I/O beyond its breakdown threshold-use dual-diode arrays for bidirectional coverage.
What is the maximum clamping voltage of ESD5101FCT5G under real-world ESD stress?
Per TLP testing in the datasheet, ESD5101FCT5G clamps to 5.5 V at 8 A (IEC Level 2 equivalent) and 6.5 V at 16 A (IEC Level 4 equivalent). These values are measured using 100 ns pulses and represent worst-case voltage seen by protected circuitry during ±15 kV contact discharge.
Can ESD5101FCT5G be used on 5 V logic lines?
No-ESD5101FCT5G has a 3.3 V reverse working voltage (VRWM) and 3.68–6.5 V breakdown range. Applying 5 V continuously exceeds VRWM and causes excessive leakage (>0.1 µA), risking power drain and potential thermal instability; it is rated exclusively for 3.3 V systems.
Is ESD5101FCT5G compatible with lead-free reflow processes?
Yes, ESD5101FCT5G is Pb-free, halogen-free, and RoHS compliant. Its maximum lead solder temperature is rated at 260 °C for 10 seconds-fully compatible with standard IPC/JEDEC J-STD-020D.3 lead-free reflow profiles including peak temperatures up to 260 °C.
ESD5101FCT5G Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Package/Case:
- 01005 (0402 Metric)
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 3.3V (Max)
- Voltage - Breakdown (Min):
- 3.68V
- Voltage - Clamping (Max) @ Ipp:
- 6.5V (Typ)
- Current - Peak Pulse (10/1000µs):
- -
- Power - Peak Pulse:
- -
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- 5.5pF @ 1MHz
- Operating Temperature:
- -55°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 2-DSN (0.44x0.23)
ESD5101FCT5G FAQ
1.How can I place an order for ESD5101FCT5G through Aetrix?
Please submit a Request for Quotation (RFQ) for ESD5101FCT5G on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for ESD5101FCT5G reliable?
The price and inventory of ESD5101FCT5G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ESD5101FCT5G is usually 5 days.
3.What payment methods are accepted for ESD5101FCT5G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ESD5101FCT5G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ESD5101FCT5G?
ESD5101FCT5G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ESD5101FCT5G order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for ESD5101FCT5G?
For technical support, including ESD5101FCT5G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ESD5101FCT5G requirements.
6.How does Aetrix verify that ESD5101FCT5G is sourced from the original manufacturer or authorized distributors?
All ESD5101FCT5G products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that ESD5101FCT5G meets industry standards.
7.What is the process for return or replacement of ESD5101FCT5G?
All ESD5101FCT5G units undergo pre-shipment inspection (PSI). If there is an issue with ESD5101FCT5G, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The ESD5101FCT5G part is unused and in its original packaging.
Return procedure for ESD5101FCT5G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
ESD5101FCT5G Tags

-
ESD9B5.0ST5G
onsemi

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DESD3V3E1BL-7B
Diodes Incorporated

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ESD5Z3.3T1G
onsemi

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D5V0H1B2LP-7B
Diodes Incorporated

-
D5V0P1B2LP-7B
Diodes Incorporated

-
DESD5V0U1BA-7
Diodes Incorporated

-
ESD5Z5.0T1G
onsemi

-
DESD5V0U1BB-7
Diodes Incorporated

-
D12V0L1B2LP-7B
Diodes Incorporated

-
PESD2V0Y1BSFYL
Nexperia USA Inc.

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DF2S5M4CT,L3F
Toshiba Semiconductor and Storage

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D5V0L1B2WS-7
Diodes Incorporated
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