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onsemi CM1215-04SO
- Part No.:
- CM1215-04SO
- Manufacturer:
- onsemi
- Category:
- TVS Diodes
- Package:
- SOT-23-6
- Datasheet:
-
CM1215-04SO.pdf
- Description:
- TVS DIODE 4.8VC SOT23-6
- Quantity:
- Payment:
- Shipping:
Inventory:7,582
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Product details
Overview
CM1215-04SO from onsemi is a 4-channel low-capacitance ESD protection array designed for high-speed data lines including HDMI, DVI, and USB 2.0 interfaces. It delivers ±15 kV IEC 61000-4-2 contact ESD protection per channel, features 1.6 pF typical input capacitance, 0.13 pF mutual capacitance, and operates from 3.3 V to 5.5 V supply rails.
For engineers reviewing the CM1215-04SO datasheet, pinout, applications, or equivalent options, this device is selected for high-fidelity signal integrity preservation in compact portable electronics where sub-2 pF loading and robust ±15 kV ESD immunity are mandatory design requirements.
Technical Context
The CM1215-04SO implements a dual-diode steering architecture per channel-each I/O pin connects via stacked diodes to VP (positive rail) and VN (negative rail)-enabling bidirectional clamping of ESD transients without external bias. It requires no external power control logic and functions passively during ESD events.
Its SOT23-6 package integrates four independent ESD channels with dedicated VP and VN supply pins, and one NC pin. The device maintains stable capacitance across temperature and voltage, with <0.04 pF I/O-to-GND capacitance mismatch and minimal dynamic resistance (0.4 Ω typical) under 1 A 8/20 µs transient current.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| ESD Protection Level | ±15 kV per IEC 61000-4-2 contact discharge - ensures system-level compliance without additional TVS stages |
| Channel Input Capacitance | 1.6 pF typical at 1 MHz - preserves signal integrity on >480 Mbps USB 2.0 and 1.65 Gbps DVI links |
| Mutual Capacitance | 0.13 pF typical - minimizes crosstalk between adjacent high-speed lanes in multi-channel layouts |
| Clamp Voltage (±1 A) | VP+1.5 V / VN−1.5 V - limits transient overvoltage to safe margins for 3.3 V and 5 V interface ICs |
| Supply Voltage Range | 3.3 V to 5.5 V (VP–VN) - supports both legacy 5 V and modern 3.3 V I/O domains |
| Operating Temperature | −40 °C to +85 °C ambient - qualified for consumer and industrial portable equipment environments |
Pinout & Package
SOT23-6 package (Case 527AJ), Pb-free, RoHS-compliant, 2.70–3.00 mm × 2.50–3.10 mm footprint with 0.95 mm pitch; thermal pad not present; rated 225 mW power dissipation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | CH1 | ESD-protected I/O channel 1 - connects directly to protected signal line (e.g., HDMI TMDS+) |
| 2 | VN | Negative supply rail - must be tied to system ground with low-inductance path and local 0.1 µF ceramic bypass |
| 3 | CH2 | ESD-protected I/O channel 2 - independent protection path; no internal coupling to CH1 |
| 4 | CH3 | ESD-protected I/O channel 3 - enables simultaneous protection of three differential pairs in compact layout |
| 5 | VP | Positive supply rail - connects to same VCC domain as protected interface (3.3 V or 5 V) |
| 6 | CH4 | ESD-protected I/O channel 4 - completes full 4-channel set for quad-lane interfaces like SATA or PCIe Gen1 |
Key Features
| Feature | Design Value |
|---|---|
| Four independent ESD channels | Enables single-device protection of full HDMI Type-A (4 TMDS lanes) or SATA II differential pairs without shared impedance paths |
| 1.6 pF typical channel capacitance | Meets HDMI 1.4 AC-coupled eye diagram mask requirements with <1% signal rise-time degradation at 1.65 Gbps |
| 0.13 pF mutual capacitance | Reduces inter-pair crosstalk below −40 dB at 1 GHz - critical for maintaining differential skew in high-speed serial links |
| ±15 kV IEC 61000-4-2 rating | Validated for Level 4 system-level ESD immunity without derating - eliminates need for secondary board-level protection |
| 1000+ ESD strike endurance | Ensures long-term reliability in field-deployed devices subject to repeated handling and connector insertion cycles |
Applications
| HDMI/DVI Interfaces | USB 2.0 High-Speed Ports |
|---|---|
Use Scenario: Protecting TMDS clock and data lanes in notebook video outputs or digital signage controllers. IC Role / Device Role / Timing Role: Passive ESD clamp placed within 3 mm of HDMI connector, shunting transients to VP/VN rails before reaching SerDes PHY. Use Value: Maintains <2 pF loading per lane to preserve 1.65 Gbps eye opening while surviving ±15 kV contact ESD per IEC 61000-4-2. | Use Scenario: Shielding D+ and D− lines in portable media players and docking stations with frequent cable hot-plug events. IC Role / Device Role / Timing Role: Bidirectional transient suppressor on full-speed USB 2.0 differential pair, operating without DC bias or control signals. Use Value: Delivers 1.6 pF channel capacitance and <0.13 pF mutual capacitance to avoid USB 2.0 eye diagram closure and maintain 480 Mbps jitter budget. |
| SATA II Data Lanes | PCIe Gen1 Differential Pairs |
Use Scenario: ESD hardening of SATA TX/RX differential pairs in external SSD enclosures and optical drive modules. IC Role / Device Role / Timing Role: Four-channel array protecting two SATA lanes (TX+/TX−, RX+/RX−) with isolated VP/VN supply routing. Use Value: Enables single-component solution for dual-lane SATA with matched 1.6 pF loading and <0.04 pF inter-pin capacitance delta to minimize skew. | Use Scenario: Board-level ESD protection for PCIe Gen1 x1 edge connectors in embedded computing modules and mini-PCBs. IC Role / Device Role / Timing Role: Low-capacitance clamp on PCIe REFCLK, TX, and RX differential signals - VP tied to 3.3 V, VN to ground. Use Value: Provides ±15 kV contact ESD immunity while holding mutual capacitance to 0.13 pF to prevent PCIe Gen1 bit-error-rate degradation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar ESD protection applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPD2E001DRYR | 2-channel, 1.0 pF typical CIN, same SOT-23-6 package, ±8 kV IEC 61000-4-2 rating | Limited to dual-lane interfaces; lower ESD rating requires supplemental protection in harsh environments | Select when ultra-low 1.0 pF loading is prioritized over ±15 kV immunity and 4-channel count |
| SP1002-04UTG | 4-channel, 0.35 pF typical CIN, SOT-23-6, ±12 kV IEC 61000-4-2, higher leakage (±5 µA) | Better high-frequency fidelity but reduced ESD margin; higher leakage may affect battery-powered sleep modes | Choose for RF-sensitive applications needing <0.4 pF loading, accepting trade-off in ESD robustness and quiescent current |
Compared with TPD2E001DRYR and SP1002-04UTG, the CM1215-04SO uniquely balances 4-channel integration, ±15 kV immunity, and 1.6 pF loading - making it optimal for HDMI, DVI, and SATA designs requiring full-lane protection without sacrificing system-level ESD compliance or signal integrity.
Availability
CM1215-04SO is available at Aetrix Electronics and suitable for HDMI interface protection, USB 2.0 high-speed port hardening, and SATA II data lane safeguarding requiring stable component supply across production lifecycles.
Supply support for CM1215-04SO 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 delivering energy-efficient, intelligent power and sensing solutions for automotive, industrial, cloud, medical, and IoT applications.
The CM1215 family belongs to onsemi's ESD protection portfolio, engineered specifically for high-speed serial interface protection where sub-2 pF loading, ±15 kV immunity, and compact SOT packaging are essential.
FAQ
What is the maximum operating voltage for the CM1215-04SO?
The CM1215-04SO supports an operating supply voltage range of 3.3 V to 5.5 V between VP and VN pins. This allows direct integration into both 3.3 V and 5 V I/O domains without level-shifting circuitry. The absolute maximum rating is 6 V VP–VN, but sustained operation above 5.5 V is not recommended. All electrical characteristics-including clamp voltage and leakage-are specified within the 3.3–5.5 V range.
Does the CM1215-04SO require external bias or control signals?
No, the CM1215-04SO operates passively and requires no external bias, enable pins, or control logic. Its dual-diode steering architecture automatically routes ESD current from any I/O pin (CH1–CH4) to VP or VN based on transient polarity. Only VP and VN supply connections and local 0.1 µF ceramic bypass capacitors are needed - simplifying layout and reducing BOM count for the CM1215-04SO.
Can the CM1215-04SO protect differential signaling standards like HDMI or USB 2.0?
Yes, the CM1215-04SO is explicitly validated for HDMI, DVI, USB 2.0, and SATA II differential interfaces. Its 1.6 pF typical input capacitance and 0.13 pF mutual capacitance preserve signal integrity up to 1.65 Gbps, and its matched channel performance ensures minimal skew between differential pairs. The datasheet cites IEEE1394, HDMI, and Serial ATA as target applications for the CM1215-04SO.
What is the meaning of "NC" on the SOT23-6 package drawing for CM1215-04SO?
The NC (No Connection) pin does not exist on the CM1215-04SO - Table 1 confirms all six pins are assigned: CH1, VN, CH2, CH3, VP, CH4. Earlier family variants (e.g., CM1215-02SO in SOT23-5) use Pin 1 as NC, but the CM1215-04SO utilizes all six pins functionally. No floating or unused terminals are present in the CM1215-04SO pinout.
How many ESD strikes can the CM1215-04SO withstand before degradation?
The CM1215-04SO is rated to withstand over 1000 ESD strikes per channel under IEC 61000-4-2 contact discharge conditions at ±15 kV. This endurance is verified per onsemi's qualification testing and ensures long-term reliability in consumer electronics subject to repeated handling, connector mating, and environmental electrostatic exposure throughout the product lifecycle.
CM1215-04SO Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Package/Case:
- SOT-23-6
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Type:
- Steering (Rail to Rail)
- Unidirectional Channels:
- 4
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- -
- Voltage - Breakdown (Min):
- -
- Voltage - Clamping (Max) @ Ipp:
- 4.8V (Typ)
- Current - Peak Pulse (10/1000µs):
- 1A (8/20µs)
- Power - Peak Pulse:
- -
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-6
CM1215-04SO FAQ
1.How can I place an order for CM1215-04SO through Aetrix?
Please submit a Request for Quotation (RFQ) for CM1215-04SO 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 CM1215-04SO reliable?
The price and inventory of CM1215-04SO are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CM1215-04SO is usually 5 days.
3.What payment methods are accepted for CM1215-04SO?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CM1215-04SO transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CM1215-04SO?
CM1215-04SO orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CM1215-04SO 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 CM1215-04SO?
For technical support, including CM1215-04SO datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CM1215-04SO requirements.
6.How does Aetrix verify that CM1215-04SO is sourced from the original manufacturer or authorized distributors?
All CM1215-04SO 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 CM1215-04SO meets industry standards.
7.What is the process for return or replacement of CM1215-04SO?
All CM1215-04SO units undergo pre-shipment inspection (PSI). If there is an issue with CM1215-04SO, 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 CM1215-04SO part is unused and in its original packaging.
Return procedure for CM1215-04SO:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
CM1215-04SO Tags
-
ESD9B5.0ST5G
onsemi
-
DESD3V3E1BL-7B
Diodes Incorporated
-
ESD5Z3.3T1G
onsemi
-
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.
-
DF2S5M4CT,L3F
Toshiba Semiconductor and Storage
-
D5V0L1B2WS-7
Diodes Incorporated
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