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Diodes Incorporated SMF4L150CA-7
- Part No.:
- SMF4L150CA-7
- Manufacturer:
- Diodes Incorporated
- Category:
- TVS Diodes
- Package:
- DO-219AA
- Datasheet:
-
SMF4L150CA-7.pdf
- Description:
- TRANSIENT VOLTAGE SUPPRESSOR PP
- Quantity:
- Payment:
- Shipping:
Inventory:5,335
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Product details
Overview
SMF4L150CA-7 from Diodes Incorporated is a bi-directional transient voltage suppressor (TVS) diode in DO-219AA package, rated for 150V working peak reverse voltage (VRWM), 167–185V breakdown voltage (VBR), 243A maximum peak pulse current (IPP), and 328V clamping voltage (VC) at 243A. It delivers 400W peak pulse power dissipation (10/1000µs waveform) and provides ±30kV ESD protection per IEC61000-4-2 for battery contact and automotive power rail protection.
For engineers reviewing the SMF4L150CA-7 datasheet, SMF4L150CA-7 pinout, SMF4L150CA-7 application, or SMF4L150CA-7 equivalent, this device is selected for high-energy surge suppression in compact DC power interfaces where low clamping ratio, sub-5ns response, and AEC-Q qualified alternatives are critical - especially in 12V/24V automotive subsystems and industrial battery management inputs.
Technical Context
This bi-directional TVS operates symmetrically across both polarities, with no cathode band marking, enabling bidirectional overvoltage clamping without polarity dependency. Its silicon avalanche structure achieves fast turn-on (<5.0ns from 0V to VBR min) and stable clamping under repetitive 10/1000µs transients up to 400W.
Thermal design is supported by RθJA = 96°C/W (on 1"×1" FR-4, 2 oz Cu), RθJC = 18°C/W, and operation from −55°C to +175°C. It is qualified to JEDEC reliability standards and compatible with lead-free reflow profiles per J-STD-020 Level 1 moisture sensitivity.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Pulse Power | 400W (10/1000µs waveform; defines maximum transient energy absorption capability) |
| Working Peak Reverse Voltage (VRWM) | 150V (maximum continuous DC or RMS voltage before significant leakage) |
| Breakdown Voltage (VBR) | 167–185V @ 1mA (avalanche initiation range; ensures reliable triggering above normal operating voltage) |
| Clamping Voltage (VC) | 328V @ 243A IPP (voltage seen by protected circuit during worst-case surge; determines downstream component stress) |
| ESD Withstand | ±30kV air / ±30kV contact (IEC61000-4-2 level 4; protects against human-body-model and system-level ESD events) |
| Response Time | <5.0ns (bi-directional turn-on delay; enables suppression before sensitive ICs experience overstress) |
| Leakage Current (IR) | 1.6µA @ 150V (low standby power loss and minimal impact on high-impedance bias networks) |
Pinout & Package
Package: DO-219AA - surface-mount, flat-lead, bi-directional configuration with no cathode band; dimensions: 2.80mm × 1.90mm × 0.60mm (E × D × L); molded green compound, UL 94V-0 rated; matte tin finish on copper alloy lead frame.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode / Cathode (symmetrical) | Bi-directional surge path | No polarity marking; terminals interchangeable; forms low-impedance shunt path for positive or negative transients |
| Case / Body | Thermal conduction path | Exposed metal pad beneath die enhances heat transfer to PCB copper; contributes to RθJC = 18°C/W |
Key Features
| Feature | Design Value |
|---|---|
| 400W peak pulse rating | Enables robust protection against ISO 7637-2 Pulse 1/2a/5a surges in 24V automotive systems without derating |
| Bi-directional symmetry | Eliminates orientation errors during placement and supports AC-coupled or floating-rail applications |
| ±30kV IEC61000-4-2 ESD rating | Meets highest industrial and automotive ESD immunity requirements without external staging |
| DO-219AA footprint | Reduces board area by ~40% vs. SMA/SMB while maintaining thermal performance via optimized copper pad layout |
| Halogen- and antimony-free "Green" construction | Complies with EU RoHS 3 (2015/863/EU) and automotive sustainability mandates without compromising surge lifetime |
Applications
| Automotive Body Control Module (BCM) | Industrial Battery Management System (BMS) |
|---|---|
Use Scenario: Protecting LIN bus transceivers and microcontroller I/O pins from load-dump and jump-start induced transients on 12V supply rails. IC Role / Device Role: Primary clamping element placed directly at power entry point before DC-DC converter input. Use Value: Limits voltage to ≤328V during 100A/50ms load dump, preventing latch-up or gate oxide damage in downstream PMICs and MCUs. |
Use Scenario: Safeguarding cell monitor ICs and Coulomb counter inputs during hot-plug events in 48V lithium-ion battery packs. IC Role / Device Role: Bidirectional overvoltage clamp on differential sense lines and single-ended analog monitoring paths. Use Value: Suppresses >10kV ESD events and 200V switching spikes without adding series resistance or degrading measurement accuracy. |
| Telecom Power Interface | Medical Portable Device Charging Port |
Use Scenario: Front-end protection for PoE-powered equipment receiving 57V DC from IEEE 802.3bt PSEs. IC Role / Device Role: Secondary surge limiter after primary GDT or MOV, handling residual fast transients. Use Value: Clamps induced lightning surges to <330V within 5ns, preserving isolation barrier integrity in digital isolators and PHYs. |
Use Scenario: Input protection for USB-C PD 20V/3A charging circuits in portable diagnostic instruments. IC Role / Device Role: Final-stage TVS on VBUS line before buck converter and battery charger IC. Use Value: Absorbs 400W ESD bursts without degradation, ensuring >100,000 insertion cycles meet IEC 60601-1-11 creepage/safety compliance. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar bi-directional TVS diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ150CA-TP (Microchip) | Same VRWM (150V), but lower IPP (123A) and higher VC (356V); SMA package (larger footprint, higher RθJA) | Limited to lower-energy transients; unsuitable for ISO 7637-2 Pulse 5a compliance | Select only if legacy SMA layout reuse is required and peak surge current <120A |
| 1.5KE150CA (ON Semiconductor) | Higher power (1500W), through-hole DO-201 package; slower response (>10ns), larger board area | Used in non-portable industrial power supplies where manual assembly and thermal mass are acceptable | Choose when mechanical ruggedness and ultra-high energy absorption outweigh size and speed constraints |
Compared with SMAJ150CA-TP and 1.5KE150CA, SMF4L150CA-7 offers superior surge density (400W in 2.8×1.9mm), faster response (<5ns), and lower clamping ratio (VC/VRWM = 2.19), making it optimal for space-constrained, high-speed automotive and portable electronics where PCB real estate and transient fidelity are critical.
Availability
SMF4L150CA-7 is available at Aetrix Electronics and suitable for automotive body control modules, industrial battery management systems, telecom power interfaces, and medical portable device charging ports requiring stable component supply, full traceability, and long-term lifecycle support.
Supply support for SMF4L150CA-7 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
Diodes Incorporated is a global manufacturer of discrete semiconductors and integrated circuits, specializing in high-reliability protection, signal integrity, and power management solutions for automotive, industrial, and consumer markets.
SMF4L150CA-7 belongs to the SMF4Lx.x(C)A family - engineered specifically for compact, high-efficiency transient suppression in next-generation automotive and battery-powered systems where miniaturization and AEC-Q readiness are mandatory.
FAQ
What is the polarity configuration of SMF4L150CA-7?
SMF4L150CA-7 is a bi-directional TVS diode with no cathode band marking. Its symmetrical internal structure allows identical clamping behavior for both positive- and negative-going transients, eliminating orientation concerns during PCB placement and supporting floating or AC-coupled signal paths.
Does SMF4L150CA-7 meet AEC-Q200 qualification?
No - SMF4L150CA-7 is not AEC-Q200 qualified. However, Diodes Incorporated offers automotive-grade equivalents with Q-suffix (e.g., SMF4L150CAQ-7) that are AEC-Q200 qualified, PPAP-capable, and manufactured in IATF 16949 certified facilities. These variants share identical electrical specs but include extended reliability testing and change control.
What is the recommended PCB pad layout for DO-219AA?
The recommended pad layout uses a 2.86mm × 1.52mm thermal pad centered under the device body, with 1.34mm side pads extending 4.20mm outward and 1.80mm width. This layout maximizes solder joint reliability and thermal conduction, achieving the specified RθJC = 18°C/W and supporting JEDEC Level 1 moisture sensitivity handling.
How does SMF4L150CA-7 perform under repeated surge stress?
SMF4L150CA-7 maintains stable VBR and VC parameters after ≥1000 pulses at rated IPP (243A, 10/1000µs), per Diodes' qualification testing. Its junction temperature rise remains within safe limits due to low RθJC and high thermal mass relative to package size, ensuring consistent clamping performance across automotive life-cycle stress profiles.
SMF4L150CA-7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Package/Case:
- DO-219AA
- Series:
- SMF4L
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 150V
- Voltage - Breakdown (Min):
- 167V
- Voltage - Clamping (Max) @ Ipp:
- 243V
- Current - Peak Pulse (10/1000µs):
- 1.6A
- Power - Peak Pulse:
- 400W
- Power Line Protection:
- No
- Applications:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 175°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-219AA
SMF4L150CA-7 FAQ
1.How can I place an order for SMF4L150CA-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMF4L150CA-7 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 SMF4L150CA-7 reliable?
The price and inventory of SMF4L150CA-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMF4L150CA-7 is usually 5 days.
3.What payment methods are accepted for SMF4L150CA-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMF4L150CA-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMF4L150CA-7?
SMF4L150CA-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMF4L150CA-7 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 SMF4L150CA-7?
For technical support, including SMF4L150CA-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMF4L150CA-7 requirements.
6.How does Aetrix verify that SMF4L150CA-7 is sourced from the original manufacturer or authorized distributors?
All SMF4L150CA-7 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 SMF4L150CA-7 meets industry standards.
7.What is the process for return or replacement of SMF4L150CA-7?
All SMF4L150CA-7 units undergo pre-shipment inspection (PSI). If there is an issue with SMF4L150CA-7, 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 SMF4L150CA-7 part is unused and in its original packaging.
Return procedure for SMF4L150CA-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMF4L150CA-7 Tags
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Diodes Incorporated
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Diodes Incorporated
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