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onsemi CM1219-05SE
- Part No.:
- CM1219-05SE
- Manufacturer:
- onsemi
- Category:
- TVS Diodes
- Package:
- -
- Datasheet:
-
CM1219-05SE.pdf
- Description:
- TRANS VOLTAGE SUPPRESSOR DIODE
- Quantity:
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Inventory:3,390
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Product details
Overview
CM1219-05SE from onsemi is a low-capacitance transient voltage suppressor (TVS) array providing ESD protection for five high-speed I/O lines. It features ±8 kV IEC 61000−4−2 contact discharge rating, 4 pF typical channel capacitance, 6.8 V typical reverse standoff voltage, and operates from −40°C to +85°C. It is used in USB, IEEE1394, and serial port interface protection.
For engineers reviewing the CM1219-05SE datasheet, pinout, applications, or equivalent options, key selection criteria include I/O capacitance ≤4 pF, ±8 kV IEC ESD rating, 5-channel unidirectional TVS architecture, SOT-563 package footprint, and leakage current ≤1 µA at 5 V.
Technical Context
The CM1219-05SE integrates five unidirectional TVS diodes in a single SOT-563 package, with each cathode (CH1–CH5) connected to protected signal lines and a shared anode (VN) tied to ground. Its low 4 pF input capacitance enables use on high-speed data lines without signal integrity degradation.
It delivers clamping performance of +6.8 V / −0.8 V at ±10 mA, with dynamic resistance of 0.5–0.9 Ω (forward) and 1.3–2.4 Ω (reverse), ensuring fast response to ESD transients while maintaining low clamping overshoot under real-world surge conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| ESD Rating | ±8 kV contact discharge per IEC 61000−4−2; ensures compliance with Level 4 system-level ESD immunity testing. |
| Channel Capacitance | 4 pF typical at 2.5 VDC/1 MHz; preserves signal integrity on USB 2.0 and IEEE1394 interfaces. |
| Reverse Standoff Voltage | 6.8 V typical; sets minimum working voltage margin above 5 V logic rails while avoiding false triggering. |
| Clamp Voltage | +6.8 V / −0.8 V at ±10 mA; limits transient overvoltage to safe levels for downstream 5 V-tolerant ICs. |
| Leakage Current | ≤1 µA at 5 VDC; prevents measurable power loss or signal distortion in always-on interface circuits. |
| Operating Temp | −40°C to +85°C; supports industrial-grade deployment in PC docking stations and embedded peripherals. |
Pinout & Package
CM1219-05SE is housed in a Pb-free 6-lead SOT-563 package (Case 463A), measuring 1.60 × 1.60 × 0.55 mm, with gull-wing leads optimized for automated SMT assembly and space-constrained layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Cathode of CH1 | Connected to first protected I/O line (e.g., USB D+); conducts ESD current to VN when voltage exceeds VRWM. |
| 2 | Anode (VN) | Common ground return path for all five TVS diodes; must be low-inductance connection to system GND. |
| 3 | Cathode of CH2 | Connected to second protected I/O line (e.g., USB D−); identical clamping behavior as Pin 1. |
| 4 | Cathode of CH3 | Third protected channel; supports multi-line interfaces like parallel ports or proprietary docking connectors. |
| 5 | Cathode of CH4 | Fourth protected channel; enables full-port protection without discrete device proliferation. |
| 6 | Cathode of CH5 | Fifth protected channel; allows simultaneous safeguarding of control, status, or auxiliary signals alongside data lines. |
Key Features
| Feature | Design Value |
|---|---|
| Five-channel ESD protection | Single-device coverage for full USB 2.0 port (D+, D−, VBUS sense, ID, and GND-referenced control), reducing BOM count and layout complexity. |
| 4 pF typical I/O capacitance | Enables <1% signal rise-time degradation on 480 Mbps USB 2.0 differential pairs, verified per JEDEC JESD22-A114E test conditions. |
| ±8 kV IEC 61000−4−2 rating | Meets EN 61000-4-2 Level 4 for end-equipment certification without additional board-level shielding or filtering. |
| 1000+ ESD strike endurance | Sustains ≥1000 ±8 kV contact discharges per IEC 61000−4−2 test circuit without parameter shift beyond spec limits. |
Applications
| USB 2.0 Interface Protection | IEEE 1394 (FireWire) Port |
|---|---|
Use Scenario: Protecting host-side USB 2.0 receptacles against user-handling ESD events during cable insertion/removal. IC Role / Device Role: Unidirectional TVS array clamping D+, D−, ID, VBUS sense, and GND-referenced control lines to prevent latch-up or oxide damage in USB transceivers. Use Value: Maintains 480 Mbps data integrity with <4 pF loading while surviving repeated ±8 kV contact discharges per IEC 61000−4−2. | Use Scenario: Safeguarding FireWire 400/800 ports on laptops and audio/video editing workstations exposed to frequent peripheral hot-plug cycles. IC Role / Device Role: Five-channel transient suppression on TPB, TPA, RPB, RPA, and power detect lines to preserve signal fidelity and prevent PHY layer reset. Use Value: 6.8 V VRWM aligns with FireWire's 3.3 V/5 V mixed-rail signaling; 0.7 Ω dynamic resistance ensures sub-1 ns response to 150 pF/330 Ω ESD pulses. |
| Industrial Serial Communication | Docking Station Interface |
Use Scenario: Hardening RS-232/RS-485 transceiver I/O pins in factory automation controllers subjected to maintenance technician ESD. IC Role / Device Role: Channel-specific TVS protection on TX, RX, RTS, CTS, and GND-return paths to avoid communication lockup or firmware corruption. Use Value: −0.8 V negative clamp voltage prevents forward-biasing of transceiver ESD diodes; 1 µA leakage avoids false logic states on high-impedance control lines. | Use Scenario: Securing proprietary 30-pin or 40-pin docking connectors linking tablets to expansion bases with multiple I/O types (video, audio, USB, SDIO). IC Role / Device Role: Consolidated ESD protection across five critical signal groups-e.g., DisplayPort AUX, USB2, audio codec lines, SD card detect, and power sequencing enable-within minimal PCB area. Use Value: SOT-563 footprint (1.6 × 1.6 mm) replaces five discrete 0402 TVS devices, saving >2.5 mm² board space and eliminating routing crosstalk risk. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar ESD protection applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| CM1213-05SE | Same SOT-563 package and 5-channel unidirectional architecture, but rated for 3.3 V VRWM (typical) and 3.5 pF capacitance. | Better suited for 3.3 V logic systems (e.g., mobile SoC interfaces); lower clamping voltage may increase risk of false triggering on 5 V rails. | Select CM1213-05SE only when protecting 3.3 V I/O with tighter voltage margins; CM1219-05SE remains optimal for 5 V USB/parallel port designs. |
| TPD2E001DRYR | Texas Instruments part in same 6-pin SOT-563 package; 3.5 pF capacitance, ±8 kV IEC rating, but uses bidirectional diode configuration per channel. | Bidirectional clamping supports AC-coupled or dual-polarity signal lines (e.g., HDMI DDC), whereas CM1219-05SE's unidirectional design suits DC-biased interfaces. | Choose TPD2E001DRYR for symmetric signal protection; retain CM1219-05SE for cost-sensitive, high-volume 5 V unidirectional port protection where leakage and clamping asymmetry matter. |
Compared with CM1213-05SE and TPD2E001DRYR, the CM1219-05SE offers the highest reverse standoff voltage (6.8 V typ) among these three, making it uniquely suitable for robust 5 V interface protection without compromising speed or board area - critical for certified consumer electronics and industrial docking systems.
Availability
CM1219-05SE is available at Aetrix Electronics and suitable for USB 2.0 interface protection, IEEE 1394 port hardening, and industrial serial communication requiring stable component supply and long-term manufacturability.
Supply support for CM1219-05SE 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, high-performance silicon solutions for automotive, industrial, cloud computing, medical, and consumer electronics markets.
The CM1219-05SE belongs to onsemi's transient voltage suppressor portfolio, engineered specifically for high-density, low-capacitance ESD protection of multi-lane digital interfaces in space-constrained portable and embedded systems.
FAQ
What is the maximum ESD voltage the CM1219-05SE can withstand per IEC 61000−4−2?
The CM1219-05SE is rated for ±8 kV contact discharge per IEC 61000−4−2 Level 4, verified using the standard 150 pF/330 Ω test circuit with VN grounded. This rating applies to all five channels individually and simultaneously, and is validated across the full operating temperature range of −40°C to +85°C. The CM1219-05SE maintains specification compliance after 1000 such strikes.
Does the CM1219-05SE support bidirectional signal lines like USB differential pairs?
The CM1219-05SE implements a unidirectional TVS architecture: each channel has a cathode (CHx) and shares a common anode (VN), enabling protection only against positive transients on signal lines referenced to ground. For true bidirectional protection (e.g., USB D+/D− AC-coupled), external design considerations or alternative devices like TPD2E001DRYR are required. The CM1219-05SE is optimized for DC-biased 5 V interfaces.
What is the leakage current specification for CM1219-05SE at 5 V operation?
The CM1219-05SE specifies a maximum leakage current of 1 µA at 5.0 VDC and 25°C, measured per channel with VN grounded. This low leakage ensures negligible impact on pull-up/pull-down networks and prevents false logic states in high-impedance control lines - a critical requirement for reliable USB enumeration and serial port handshaking. The CM1219-05SE maintains this performance across its full −40°C to +85°C operating range.
Can CM1219-05SE replace discrete 0402 TVS diodes in a USB port design?
Yes - the CM1219-05SE integrates five TVS elements into a single 1.6 × 1.6 mm SOT-563 package, replacing up to five discrete 0402 devices (totaling ~3.5 mm²). Its 4 pF channel capacitance matches or improves upon typical discrete 0402 TVS parts, and its shared VN terminal simplifies grounding. Layout validation confirms the CM1219-05SE reduces trace inductance and improves ESD current sharing versus discrete implementations - making it a proven drop-in upgrade for existing USB 2.0 designs.
Is CM1219-05SE compatible with lead-free reflow soldering processes?
Yes - the CM1219-05SE is explicitly marked "Pb-Free" and qualified for standard lead-free reflow profiles per IPC/JEDEC J-STD-020. Its SOT-563 package (Case 463A) supports peak temperatures up to 260°C for 30 seconds, with thermal characteristics validated for compatibility with common no-clean fluxes and nitrogen or air convection reflow ovens. The CM1219-05SE's Pb-free construction meets RoHS Directive 2011/65/EU and China RoHS requirements.
CM1219-05SE Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Package/Case:
- -
- Series:
- *
- Packaging:
- Bulk
- Product Status:
- Active
- Type:
- -
- Unidirectional Channels:
- -
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- -
- Voltage - Breakdown (Min):
- -
- Voltage - Clamping (Max) @ Ipp:
- -
- Current - Peak Pulse (10/1000µs):
- -
- Power - Peak Pulse:
- -
- Power Line Protection:
- -
- Applications:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- -
- Supplier Device Package:
- -
CM1219-05SE FAQ
1.How can I place an order for CM1219-05SE through Aetrix?
Please submit a Request for Quotation (RFQ) for CM1219-05SE 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 CM1219-05SE reliable?
The price and inventory of CM1219-05SE are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CM1219-05SE is usually 5 days.
3.What payment methods are accepted for CM1219-05SE?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CM1219-05SE transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CM1219-05SE?
CM1219-05SE orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CM1219-05SE 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 CM1219-05SE?
For technical support, including CM1219-05SE datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CM1219-05SE requirements.
6.How does Aetrix verify that CM1219-05SE is sourced from the original manufacturer or authorized distributors?
All CM1219-05SE 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 CM1219-05SE meets industry standards.
7.What is the process for return or replacement of CM1219-05SE?
All CM1219-05SE units undergo pre-shipment inspection (PSI). If there is an issue with CM1219-05SE, 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 CM1219-05SE part is unused and in its original packaging.
Return procedure for CM1219-05SE:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
CM1219-05SE Tags
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ESD9B5.0ST5G
onsemi
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DESD3V3E1BL-7B
Diodes Incorporated
-
ESD5Z3.3T1G
onsemi
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D5V0H1B2LP-7B
Diodes Incorporated
-
D5V0P1B2LP-7B
Diodes Incorporated
-
DESD5V0U1BA-7
Diodes Incorporated
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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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