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onsemi CM1213-02SO
- Part No.:
- CM1213-02SO
- Manufacturer:
- onsemi
- Category:
- TVS Diodes
- Package:
- SC-74, SOT-457
- Datasheet:
-
CM1213-02SO.pdf
- Description:
- LOW CAPACITANCE ESD PROTECTION A
- Quantity:
- Payment:
- Shipping:
Inventory:6,375
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Product details
Overview
CM1213-02SO from onsemi is a 6-channel low-capacitance ESD protection array designed for high-speed data lines, featuring 1.0 pF typical channel input capacitance, ±8 kV IEC 61000−4−2 contact discharge rating, and integrated VP–VN Zener clamping to eliminate external bypass capacitors. It protects USB2.0, HDMI, and Serial ATA interfaces in compact SOIC-8 footprint.
For engineers reviewing the CM1213-02SO datasheet, pinout, applications, or equivalent options, key selection criteria include channel count (6), signal-line capacitance matching (0.02 pF typical), mutual capacitance (0.11 pF), clamp voltage (+8.8 V / −1.4 V at 1 A), and supply rail operating range (3.3 V to 5.5 V).
Technical Context
The CM1213-02SO implements dual-diode steering per channel-top and bottom diodes route positive/negative ESD transients to VP or VN rails-combined with an embedded Zener diode between VP and VN to clamp supply rail overvoltage and suppress transient-induced ground bounce. This architecture enables robust system-level ESD immunity without requiring external decoupling capacitance on VP.
It operates across −40 °C to +85 °C, supports 3.3 V and 5.5 V supply rails, delivers <±1.0 µA leakage at 5 V, and maintains stable 1.0 pF input capacitance across voltage and temperature-critical for preserving signal integrity in 480 Mbps USB2.0 and 1.65 Gbps DVI/HDMI links.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| ESD Rating | ±8 kV contact discharge per IEC 61000−4−2 Level 4 - ensures compliance with industrial and consumer ESD immunity requirements. |
| Channel Input Capacitance | 1.0 pF typical at 1 MHz - preserves signal rise/fall times in high-speed differential interfaces like USB2.0 and HDMI. |
| Capacitance Matching | 0.02 pF typical - minimizes skew between differential pairs, essential for maintaining common-mode rejection in high-speed links. |
| Clamp Voltage | +8.8 V / −1.4 V at 1 A (8/20 µs pulse) - limits transient overvoltage seen by downstream ICs during ESD events. |
| Supply Voltage Range | 3.3 V to 5.5 V (VP–VN) - compatible with standard logic I/O rails including USB PHY, HDMI TMDS, and SATA transceivers. |
| Leakage Current | ±1.0 µA max at 5 V - avoids DC loading of sensitive analog or reference inputs in protected circuits. |
| Dynamic Resistance | 0.7 Ω (positive), 0.4 Ω (negative) - lowers clamping voltage under fast-rising ESD pulses by reducing IR drop across protection path. |
Pinout & Package
CM1213-02SO is housed in an 8-lead SOIC package (Case 751AC), measuring 4.9 mm × 6.0 mm × 1.75 mm, with gull-wing leads and Pb-free RoHS-compliant finish.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1 | CH1 | I/O channel input - connects directly to protected signal line (e.g., USB D+, HDMI TMDS+). |
| 2 | CH2 | I/O channel input - second protected signal line, matched in capacitance and layout to CH1 for differential use. |
| 3 | VN | Negative supply rail - tied to system ground (0 V); forms return path for negative ESD current. |
| 4 | CH3 | I/O channel input - third protected line, supporting multi-lane interfaces such as USB2.0 (D+/D−) plus ID/VBUS sense. |
| 5 | CH4 | I/O channel input - fourth channel, enabling full protection of 4-lane interfaces like PCIe x1 or dual USB ports. |
| 6 | CH5 | I/O channel input - fifth channel, used for auxiliary signals (e.g., HDMI CEC, DDC clock/data) or additional data lanes. |
| 7 | VP | Positive supply rail - connected to local 3.3 V or 5 V rail; Zener clamps VP to prevent rail collapse during positive ESD strikes. |
| 8 | CH6 | I/O channel input - sixth channel, completing full protection set for 6-signal applications such as SATA TX/RX + AUX. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated VP–VN Zener diode | Eliminates need for external 0.22 µF bypass capacitor on VP, reducing BOM count and PCB area in space-constrained designs. |
| 0.02 pF channel capacitance matching | Enables precise differential signaling integrity in USB2.0 and HDMI applications where inter-pair skew must be minimized. |
| 0.11 pF mutual capacitance | Reduces crosstalk between adjacent protected lines, critical for dense routing in notebook and set-top box PCBs. |
| 1000+ ESD strike endurance | Ensures long-term reliability in field-deployed systems subject to repeated electrostatic exposure (IEC 61000−4−2 Level 4). |
| Pb-free SOIC-8 packaging | Meets RoHS Directive 2011/65/EU and supports lead-free reflow soldering profiles (JEDEC J-STD-020). |
Applications
| USB2.0 Interface Protection | HDMI/DVI TMDS Line Protection |
|---|---|
Use Scenario: Protecting D+ and D− lines of USB2.0 host/device ports in notebooks and docking stations against human-body ESD events. IC Role / Device Role / Timing Role: ESD transient suppressor placed at connector entry point, clamping fast-rising ±8 kV discharges before they reach USB transceiver PHY. Use Value: Maintains 480 Mbps data rate integrity via 1.0 pF channel capacitance and 0.02 pF matching-preventing signal distortion and bit errors. |
Use Scenario: Shielding HDMI or DVI TMDS clock and data channels in digital TVs and LCD monitors from connector-based ESD. IC Role / Device Role / Timing Role: Low-capacitance shunt protector on each TMDS differential pair, referenced to local 3.3 V rail and chassis ground. Use Value: Enables reliable 1.65 Gbps operation by limiting mutual capacitance to 0.11 pF and clamp voltage to +8.8 V/−1.4 V at 1 A. |
| Serial ATA Data Lane Protection | IEEE1394 FireWire Port Protection |
Use Scenario: Safeguarding SATA TX/RX differential pairs and ground-return paths in HDD enclosures and motherboard add-in cards. IC Role / Device Role / Timing Role: Six-channel ESD array covering both differential lanes and auxiliary signals (e.g., activity LED, presence detect). Use Value: Preserves 1.5–3.0 Gbps signal fidelity with sub-1 pF loading and minimal inter-channel skew-critical for SATA Gen I/II compliance. |
Use Scenario: Hardening IEEE1394 (FireWire 400/800) ports in camcorders and audio interfaces against repeated plug/unplug ESD. IC Role / Device Role / Timing Role: Channel-wise ESD clamp on all four data/control lines (TPA+, TPA−, TPB+, TPB−), referenced to local 3.3 V and ground. Use Value: Sustains 400/800 Mbps link stability using matched 1.0 pF capacitance and integrated Zener rail clamping-reducing need for discrete TVS arrays. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar ESD protection applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SP1003-02UTG | 4-channel, 0.35 pF typical capacitance, SOT-23-6 package - lower capacitance but fewer channels and no integrated Zener rail clamp. | Suitable for single differential pair protection only; requires external 0.1 µF VP bypass capacitor. | Select when ultra-low capacitance (<0.4 pF) is prioritized over channel count and supply rail self-protection. |
| TPD2E001DRYR | 2-channel, 1.0 pF typical capacitance, X2SON-6 package - same capacitance but lacks VP–VN Zener and supports only dual-line protection. | Limited to USB D+/D− or HDMI CEC/HEAC; cannot protect 6-line interfaces like SATA or multi-port USB hubs. | Choose for cost-sensitive, space-constrained dual-line applications where VP rail clamping is handled externally. |
Compared with SP1003-02UTG and TPD2E001DRYR, CM1213-02SO uniquely delivers six matched 1.0 pF channels with integrated VP–VN Zener clamping-enabling complete interface protection in one SOIC-8 device without external capacitors or layout compromises.
Availability
CM1213-02SO is available at Aetrix Electronics and suitable for USB2.0 port hardening, HDMI/DVI interface protection, and Serial ATA data lane safeguarding requiring stable component supply, long-term lifecycle support, and RoHS-compliant sourcing.
Supply support for CM1213-02SO 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 power, analog, sensor, and connectivity solutions for automotive, industrial, cloud, medical, and IoT applications.
The CM1213 family belongs to onsemi's ESD protection portfolio, engineered specifically for high-speed serial interfaces where minimal capacitive loading, precise channel matching, and system-level IEC 61000−4−2 compliance are mandatory.
FAQ
What is the maximum operating voltage for CM1213-02SO?
The CM1213-02SO supports an operating supply voltage (VP − VN) up to 6.0 V, with recommended operation between 3.3 V and 5.5 V. Its absolute maximum rating ensures safe use in standard 3.3 V and 5 V logic domains, and its clamp voltage remains stable across this range-making CM1213-02SO suitable for mixed-voltage board designs without derating.
Does CM1213-02SO require an external bypass capacitor on the VP pin?
No, CM1213-02SO does not require an external bypass capacitor on VP due to its integrated Zener diode between VP and VN. This Zener clamps supply rail transients and absorbs positive ESD energy, eliminating the need for a discrete 0.22 µF ceramic capacitor-reducing bill-of-materials count and PCB real estate while maintaining IEC 61000−4−2 Level 4 compliance.
How many ESD strikes can CM1213-02SO withstand before degradation?
CM1213-02SO is rated for over 1000 ESD strikes per IEC 61000−4−2 Level 4 contact discharge (±8 kV), tested continuously at 1-second intervals. Post-test validation confirms all electrical parameters-including leakage, capacitance, and clamp voltage-remain within specification, confirming CM1213-02SO's suitability for high-reliability consumer and industrial end equipment.
Is CM1213-02SO compatible with lead-free reflow soldering processes?
Yes, CM1213-02SO is Pb-free and RoHS-compliant, qualified for standard lead-free reflow profiles per JEDEC J-STD-020. Its SOIC-8 package (Case 751AC) supports peak temperatures up to 260 °C for 30 seconds, ensuring robust manufacturability in modern SMT assembly lines without delamination or solder joint reliability issues.
What is the thermal performance of CM1213-02SO in continuous operation?
CM1213-02SO has a package power rating of 600 mW in the SOIC-8 configuration, with an operating temperature range of −40 °C to +85 °C. Its low dynamic resistance (0.4–0.7 Ω) and minimal leakage (<±1.0 µA) ensure negligible self-heating during normal signal transmission-making CM1213-02SO thermally stable in ambient environments typical of desktop PCs, set-top boxes, and portable media devices.
CM1213-02SO Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Package/Case:
- SC-74, SOT-457
- Series:
- -
- Packaging:
- Bulk
- Product Status:
- Discontinued at Digi-Key
- Type:
- Steering (Rail to Rail)
- Unidirectional Channels:
- 2
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 3.3V
- Voltage - Breakdown (Min):
- 6.5V
- Voltage - Clamping (Max) @ Ipp:
- 10V (Typ)
- Current - Peak Pulse (10/1000µs):
- 1A (8/20µs)
- Power - Peak Pulse:
- -
- Power Line Protection:
- Yes
- Applications:
- DVI, HDMI, USB
- Capacitance @ Frequency:
- 0.85pF @ 1MHz
- Operating Temperature:
- -40°C ~ 150°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SC-74
CM1213-02SO FAQ
1.How can I place an order for CM1213-02SO through Aetrix?
Please submit a Request for Quotation (RFQ) for CM1213-02SO 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 CM1213-02SO reliable?
The price and inventory of CM1213-02SO are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CM1213-02SO is usually 5 days.
3.What payment methods are accepted for CM1213-02SO?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CM1213-02SO transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CM1213-02SO?
CM1213-02SO orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CM1213-02SO 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 CM1213-02SO?
For technical support, including CM1213-02SO datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CM1213-02SO requirements.
6.How does Aetrix verify that CM1213-02SO is sourced from the original manufacturer or authorized distributors?
All CM1213-02SO 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 CM1213-02SO meets industry standards.
7.What is the process for return or replacement of CM1213-02SO?
All CM1213-02SO units undergo pre-shipment inspection (PSI). If there is an issue with CM1213-02SO, 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 CM1213-02SO part is unused and in its original packaging.
Return procedure for CM1213-02SO:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
CM1213-02SO Tags
-
ESD9B5.0ST5G
onsemi
-
DESD3V3E1BL-7B
Diodes Incorporated
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ESD5Z3.3T1G
onsemi
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D5V0H1B2LP-7B
Diodes Incorporated
-
D5V0P1B2LP-7B
Diodes Incorporated
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DESD5V0U1BA-7
Diodes Incorporated
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ESD5Z5.0T1G
onsemi
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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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