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onsemi CM1213A-04S7
- Part No.:
- CM1213A-04S7
- Manufacturer:
- onsemi
- Category:
- TVS Diodes
- Package:
- 6-TSSOP, SC-88, SOT-363
- Datasheet:
-
CM1213A-04S7.pdf
- Description:
- TVS DIODE 3.3VWM 10V SC88/SC70-6
- Quantity:
- Payment:
- Shipping:
Inventory:7,927
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Product details
Overview
CM1213A-04S7 from onsemi is a 4-channel low-capacitance ESD protection array designed for high-speed data lines, featuring 0.85 pF typical channel input capacitance, ±12 kV IEC 61000−4−2 contact discharge rating, and integrated VP–VN Zener clamping. It protects USB2.0, HDMI, and PCIe signal paths while minimizing signal integrity impact in compact portable electronics.
For engineers reviewing the CM1213A-04S7 datasheet, pinout, applications, or equivalent options, key selection criteria include channel count (4), SC70-6 package footprint, sub-1 pF capacitance matching (0.02 pF typ), clamp voltage (+10 V / −1.7 V at 1 A), and compatibility with 3.3 V supply rails in space-constrained interfaces.
Technical Context
The CM1213A-04S7 implements a dual-diode steering architecture per channel-each I/O pin connects to both VP and VN rails via series diodes-enabling bidirectional ESD current diversion. Its embedded Zener diode between VP and VN provides rail-to-rail clamping without requiring an external bypass capacitor for positive transients.
It operates across −40 °C to +150 °C, supports up to 5.5 V supply differential, and maintains stable 0.85 pF input capacitance across temperature and bias voltage-critical for preserving signal integrity in 480 Mbps USB2.0 and 400/800 Mbps IEEE1394 applications.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| ESD Rating | ±12 kV contact discharge per IEC 61000−4−2 Level 4 - ensures robust system-level ESD immunity without external TVS cascading. |
| Channel Input Capacitance | 0.85 pF typical at 1 MHz, 3.3 V bias - enables minimal signal distortion on 480 Mbps USB2.0 and 800 Mbps FireWire links. |
| Capacitance Matching | 0.02 pF typical - preserves differential pair timing skew in DVI/HDMI and SATA applications. |
| Clamp Voltage (VCL) | +10 V (positive), −1.7 V (negative) at 1 A, 8/20 µs pulse - limits transient overvoltage seen by downstream PHY ICs. |
| Supply Voltage Range | 3.3 V to 5.5 V (VP–VN) - compatible with standard logic I/O rails and industrial 5 V systems. |
| Operating Temperature | −40 °C to +150 °C - supports automotive under-hood and industrial edge computing deployments. |
| Leakage Current | 1.0 µA max at 5 V - avoids DC loading of high-impedance sensor or reference signal lines. |
Pinout & Package
CM1213A-04S7 is housed in a Pb-free SC70-6 (Case 419AD) package measuring 1.25 mm × 2.00 mm × 0.90 mm, optimized for high-density PCB layouts in portable and embedded systems.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | CH1 | ESD-protected I/O channel - connects directly to protected signal line (e.g., USB D+). |
| 2 | VN | Negative supply rail (GND) - must be tied to low-inductance ground plane for effective negative transient clamping. |
| 3 | CH2 | ESD-protected I/O channel - used for complementary signal (e.g., USB D−) in differential pairs. |
| 4 | CH3 | ESD-protected I/O channel - supports third high-speed line such as HDMI TMDS clock or PCIe REFCLK. |
| 5 | VP | Positive supply rail (3.3 V or 5 V) - supplies clamping reference; internal Zener prevents rail collapse during positive ESD events. |
| 6 | CH4 | ESD-protected I/O channel - completes 4-channel set for full HDMI TMDS lane protection or dual USB lanes. |
Key Features
| Feature | Design Value |
|---|---|
| Low Capacitance Architecture | 0.85 pF typical per channel with <0.02 pF matching - preserves signal rise/fall times and eye diagram integrity in 480 Mbps+ interfaces. |
| Integrated Rail-to-Rail Clamping | Zener diode between VP and VN eliminates need for external 0.22 µF bypass capacitor on VP - reduces BOM count and PCB area. |
| Differential Signal Optimization | Matched capacitance and symmetric diode structure minimize skew and common-mode noise injection in USB/HDMI differential pairs. |
| High ESD Endurance | Withstands >1000 IEC 61000−4−2 ±8 kV contact discharges per pin - ensures long-term reliability in production test and field use. |
| Automotive-Qualified Variant Available | SZCM1213A-04S7 option meets AEC-Q101 and PPAP requirements - suitable for infotainment and ADAS interface protection. |
Applications
| USB2.0 Interface Protection | HDMI/DVI TMDS Lane Protection |
|---|---|
|
Use Scenario: Protecting USB2.0 D+/D− lines on notebook motherboard or docking station I/O connector against user-handling ESD. IC Role / Device Role / Timing Role: Front-end ESD shunt placed within 3 mm of connector, clamping transients before they reach USB transceiver PHY. Use Value: 0.85 pF capacitance avoids degrading 480 Mbps eye height/width; ±12 kV rating exceeds IEC 61000−4−2 system-level test requirement. |
Use Scenario: Shielding HDMI source output pins (TMDS0+, TMDS0−, TMDS1+, TMDS1−) in set-top box or digital TV SoC design. IC Role / Device Role / Timing Role: Per-lane bidirectional ESD clamp with matched capacitance to preserve differential skew and common-mode rejection. Use Value: 0.02 pF channel matching ensures <1 ps inter-pair skew; +10 V/−1.7 V clamp voltage stays within HDMI receiver absolute maximum ratings. |
| PCIe Reference Clock Protection | IEEE1394 (FireWire) Port Protection |
|
Use Scenario: Safeguarding 100 MHz PCIe REFCLK± differential pair on server backplane or add-in card edge connector. IC Role / Device Role / Timing Role: Low-capacitance ESD buffer placed adjacent to connector, preventing jitter increase and duty-cycle distortion from ESD-induced rail bounce. Use Value: Sub-1 pF loading avoids phase noise degradation; integrated VP–VN Zener suppresses supply rail ringing during fast 30 A/ns ESD pulses. |
Use Scenario: Hardening IEEE1394a/b data lines (TPA, TPB, TPA′, TPB′) in camcorder or audio interface peripheral. IC Role / Device Role / Timing Role: Four-channel ESD guard for full FireWire physical layer, maintaining signal fidelity at 400/800 Mbps data rates. Use Value: 0.85 pF per channel enables compliance with FireWire 1394b AC-coupled signaling specs; −40 °C to +150 °C rating supports outdoor equipment operation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar ESD protection applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPD4E05U06DQAR | 0.5 pF typical capacitance, 5 V working voltage, SOT-563 package (6-pin, 1.6 × 1.6 mm) | Better suited for ultra-high-speed (>1 Gbps) SerDes where sub-0.6 pF is mandatory; smaller capacitance but lower ±12 kV rating (±10 kV contact) | Select when prioritizing lowest possible capacitance over maximum ESD margin; requires layout rework due to larger footprint and different pinout. |
| SP3203-04UTG | 1.0 pF typical capacitance, ±15 kV air discharge, SOT-23-6 package (same pin count, different pin mapping) | Higher air discharge rating beneficial for unshielded consumer enclosures; 0.15 pF higher capacitance may affect 480 Mbps USB eye margin | Choose for cost-sensitive consumer designs needing extended air-gap ESD coverage; verify CH1–CH4 pin alignment against SC70-6 layout. |
Compared with TPD4E05U06DQAR and SP3203-04UTG, the CM1213A-04S7 delivers optimal balance of 0.85 pF capacitance, ±12 kV contact rating, and SC70-6 footprint - making it ideal for space-constrained USB2.0 and HDMI applications where both speed and ruggedness are required without layout redesign.
Availability
CM1213A-04S7 is available at Aetrix Electronics and suitable for USB2.0 ports, HDMI interfaces, and PCIe reference clock lines requiring stable component supply in high-volume consumer, industrial, and automotive electronics programs.
Supply support for CM1213A-04S7 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 management, analog, sensing, and connectivity solutions for automotive, industrial, cloud, and IoT markets.
The CM1213A family was engineered specifically for high-speed serial interface ESD protection-emphasizing ultra-low capacitance, rail-integrated clamping, and AEC-Q101 readiness for next-generation portable and automotive electronics.
FAQ
What is the maximum operating voltage for CM1213A-04S7?
The CM1213A-04S7 supports an operating supply voltage (VP − VN) of up to 5.5 V, with a minimum recommended supply of 3.3 V. This range aligns with standard logic I/O rails and ensures reliable clamping performance across industrial and consumer voltage domains. The device's absolute maximum rating is strictly limited to 5.5 V to prevent Zener breakdown degradation.
Does CM1213A-04S7 require an external bypass capacitor on the VP pin?
No, CM1213A-04S7 does not require an external bypass capacitor on VP due to its integrated Zener diode between VP and VN. This Zener clamps positive ESD transients directly to the supply rail, eliminating the need for a discrete 0.22 µF ceramic capacitor. However, adding one improves dynamic rail stability under repeated high-current pulses.
Can CM1213A-04S7 protect differential signal pairs without skewing timing?
Yes, CM1213A-04S7 is explicitly designed for differential signals: its 0.02 pF typical channel capacitance matching minimizes inter-pair skew, and symmetric diode architecture ensures balanced positive/negative clamping. This preserves signal integrity in USB2.0, HDMI, and FireWire differential lanes without measurable eye diagram degradation.
What is the leakage current specification for CM1213A-04S7 at 5 V?
The CM1213A-04S7 specifies a maximum channel leakage current (ILEAK) of 1.0 µA at 5 V (VP = 5 V, VN = 0 V, TA = 25 °C). This low leakage avoids loading high-impedance nodes such as sensor outputs or reference voltage dividers, ensuring accuracy in precision analog subsystems sharing the same PCB.
Is CM1213A-04S7 qualified for automotive applications?
The base CM1213A-04S7 is not automotive-qualified, but the SZCM1213A-04S7 variant is AEC-Q101 qualified and PPAP capable. It undergoes additional stress testing and process controls for under-hood and infotainment use. For automotive designs, specify the SZ prefix to ensure qualification compliance and supply chain traceability.
CM1213A-04S7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Package/Case:
- 6-TSSOP, SC-88, SOT-363
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Type:
- Steering (Rail to Rail)
- Unidirectional Channels:
- 4
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 3.3V
- Voltage - Breakdown (Min):
- 6V
- Voltage - Clamping (Max) @ Ipp:
- 10V (Typ)
- Current - Peak Pulse (10/1000µs):
- 1A (8/20µs)
- Power - Peak Pulse:
- -
- Power Line Protection:
- Yes
- Applications:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SC-70-6
CM1213A-04S7 FAQ
1.How can I place an order for CM1213A-04S7 through Aetrix?
Please submit a Request for Quotation (RFQ) for CM1213A-04S7 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 CM1213A-04S7 reliable?
The price and inventory of CM1213A-04S7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CM1213A-04S7 is usually 5 days.
3.What payment methods are accepted for CM1213A-04S7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CM1213A-04S7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CM1213A-04S7?
CM1213A-04S7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CM1213A-04S7 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 CM1213A-04S7?
For technical support, including CM1213A-04S7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CM1213A-04S7 requirements.
6.How does Aetrix verify that CM1213A-04S7 is sourced from the original manufacturer or authorized distributors?
All CM1213A-04S7 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 CM1213A-04S7 meets industry standards.
7.What is the process for return or replacement of CM1213A-04S7?
All CM1213A-04S7 units undergo pre-shipment inspection (PSI). If there is an issue with CM1213A-04S7, 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 CM1213A-04S7 part is unused and in its original packaging.
Return procedure for CM1213A-04S7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
CM1213A-04S7 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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