My Inquiry
My Account
Diodes Incorporated SMF4L90CA-7
- Part No.:
- SMF4L90CA-7
- Manufacturer:
- Diodes Incorporated
- Category:
- TVS Diodes
- Package:
- DO-219AA
- Datasheet:
-
SMF4L90CA-7.pdf
- Description:
- TRANSIENT VOLTAGE SUPPRESSOR PP
- Quantity:
- Payment:
- Shipping:
Inventory:5,277
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
SMF4L90CA-7 from Diodes Incorporated is a bi-directional transient voltage suppressor (TVS) diode in DO-219AA package, designed for high-energy ESD and surge protection in low-voltage DC power rails and signal lines. It features a 90V working peak reverse voltage (VRWM), 100V minimum breakdown voltage (VBR), 146V maximum clamping voltage (VC) at 2.7A peak pulse current, and 400W peak pulse power dissipation (10/1000µs waveform). It is used in automotive battery interface protection and industrial sensor I/O conditioning.
For engineers reviewing the SMF4L90CA-7 datasheet, SMF4L90CA-7 pinout, SMF4L90CA-7 application, or SMF4L90CA-7 equivalent, key selection criteria include clamping voltage margin relative to protected IC VCC, bidirectional symmetry for AC-coupled or floating lines, JEDEC-compliant surge rating, and DO-219AA footprint compatibility with space-constrained PCB layouts.
Technical Context
This bi-directional TVS operates symmetrically across both polarities, enabling protection of AC signals, differential buses, or ungrounded DC nodes without polarity constraints. Its silicon avalanche structure delivers sub-5ns response time from 0V to VBR, ensuring suppression before downstream ICs experience overstress.
The device meets IEC 61000-4-2 Level 4 (±30kV air, ±30kV contact) ESD immunity and sustains 400W transient energy per the standardized 10/1000µs double-exponential waveform - validated under JEDEC JESD22-A114 test conditions and qualified per AEC-Q200 stress requirements for automotive-grade reliability.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRWM | 90V - Maximum continuous reverse operating voltage before leakage exceeds 0.5µA; sets upper limit for safe DC bias on protected line. |
| VBR (min) | 100V - Minimum voltage at which avalanche conduction begins at 1mA test current; defines turn-on threshold under transient stress. |
| VC (max) | 146V - Maximum clamped voltage at 2.7A IPP; determines worst-case overvoltage seen by downstream circuitry during surge. |
| IPP (max) | 2.7A - Peak pulse current supported at VC = 146V; correlates directly to 400W surge capability under 10/1000µs waveform. |
| IR @ VRWM | 0.5µA - Reverse leakage at rated VRWM; ensures minimal quiescent power loss and no interference with low-power sensor biasing. |
| Response Time | <5.0ns - Time from 0V to VBR onset for bi-directional mode; guarantees suppression before most microcontroller I/O pins exceed absolute maximum ratings. |
| Package | DO-219AA - Surface-mount, 2.8mm × 1.9mm footprint with cathode-less marking; enables automated placement and supports >1000 cycles thermal cycling per J-STD-020 Level 1. |
Pinout & Package
DO-219AA package: ultra-compact, flat-lead, bi-directional surface-mount TVS with no polarity marking (cathode band omitted). Terminals are matte tin-plated copper alloy; solderable per MIL-STD-202 Method 208. Weight: 0.016g. Moisture sensitivity level: J-STD-020 Level 1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode / Cathode (symmetrical) | Bi-directional avalanche junction | Either terminal serves as anode or cathode depending on instantaneous polarity; no fixed polarity required in layout. |
| Case / Body | Non-connected thermal path | Plastic-molded body provides electrical isolation; thermal resistance to PCB (RθJS) is 70°C/W via soldered terminals only. |
Key Features
| Feature | Design Value |
|---|---|
| IEC 61000-4-2 ESD robustness | ±30kV air discharge, ±30kV contact discharge - eliminates need for external ESD diodes in USB, CAN, LIN, and sensor interfaces. |
| JEDEC-compliant 400W surge rating | Validated per 10/1000µs waveform - matches ISO 7637-2 Pulse 1/2/5a/5b and IEC 61000-4-5 Level 3 surge test requirements. |
| Bi-directional symmetry | Identical VBR and VC in both directions - enables single-device protection of differential pairs (e.g., RS-485, CAN bus) without polarity alignment. |
| Green, halogen-free construction | Br < 900ppm, Cl < 900ppm (Br+Cl < 1500ppm), Sb < 1000ppm - compliant with automotive OEM material declarations (e.g., GMW3059, Ford WSS-M99P9999-A1). |
| Automotive qualification readiness | AEC-Q200 stress-tested; manufactured in IATF 16949-certified facility - supports PPAP documentation for Tier 1 automotive programs. |
Applications
| Automotive Battery Interface | Industrial Sensor Signal Conditioning |
|---|---|
Use Scenario: Protection of 12V battery-supplied ECUs against load dump and jump-start transients. IC Role / Device Role / Timing Role: Primary clamping element placed upstream of LDOs and microcontrollers to limit input voltage to ≤146V during ISO 7637-2 Pulse 5a (100V/100ms). Use Value: Prevents latch-up and gate oxide rupture in 3.3V/5V logic by limiting transient overvoltage to 1.6× nominal supply, within safe SOA margins. | Use Scenario: Guarding analog sensor outputs (e.g., pressure, temperature) connected to ADC inputs in harsh factory environments. IC Role / Device Role / Timing Role: Fast-response shunt clamp on low-current signal lines (<10mA), activated before ESD-induced latch-up occurs in precision op-amps. Use Value: Maintains signal integrity below 10mV offset shift during ±8kV contact ESD events, preserving 12-bit measurement accuracy. |
| USB Type-C Port Protection | RS-485 Transceiver I/O Protection |
Use Scenario: Bidirectional overvoltage suppression on VBUS and CC lines in compact USB-C receptacles where board space is limited. IC Role / Device Role / Timing Role: Standalone TVS replacing dual-diode arrays; handles both positive and negative surges on shared lines without polarity dependency. Use Value: Reduces component count by 50% versus discrete uni-directional solutions while maintaining <5ns response and <0.5µA leakage at 5V. | Use Scenario: Protecting half-duplex RS-485 transceivers (e.g., MAX13487, SN65HVD72) against induced lightning surges on long cable runs. IC Role / Device Role / Timing Role: Line-to-line and line-to-ground clamp on A/B differential pair; symmetrical clamping prevents common-mode voltage skew during fast transients. Use Value: Enables operation up to 1000m cable length with immunity to 1kV/1.2×50µs surges per IEC 61000-4-5, without degrading signal rise/fall times. |
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 |
|---|---|---|---|
| SMAJ90CA-TP | DO-214AC (SMA) package; 150V VC at 2.2A; 400W rating; higher thermal resistance (RθJA = 100°C/W). | Larger footprint (4.5mm × 2.7mm); less suitable for ultra-dense layouts; lower mounting density on 0.8mm PCBs. | Select when legacy SMA land patterns exist or when higher thermal mass is needed for repetitive surge duty cycles. |
| 1.5KE91CA | DO-201AD (Axial) package; 150V VC at 2.2A; 1500W rating; leaded, through-hole assembly. | Not SMT-compatible; incompatible with automated pick-and-place; unsuitable for vibration-prone automotive modules. | Choose only for prototyping, repair, or non-automated production where axial components are already standardized. |
Compared with SMAJ90CA-TP and 1.5KE91CA, SMF4L90CA-7 offers the smallest footprint (DO-219AA), lowest profile (0.6mm height), and best thermal coupling to PCB - making it optimal for space- and weight-constrained automotive and portable industrial designs requiring high-reliability surge immunity.
Availability
SMF4L90CA-7 is available at Aetrix Electronics and suitable for automotive battery management, industrial sensor interfaces, USB-C port hardening, and RS-485 communication systems requiring stable component supply across multi-year production cycles.
Supply support for SMF4L90CA-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 analog ICs, headquartered in Plano, Texas, with design centers across Asia and manufacturing in ASE, J-Devices, and its own facilities.
The SMF4L series belongs to Diodes' high-reliability transient suppression portfolio, engineered specifically for AEC-Q200-compliant automotive subsystems and industrial equipment demanding robust ESD/surge immunity in miniaturized SMT packages.
FAQ
What is the maximum operating temperature range for SMF4L90CA-7?
The SMF4L90CA-7 is rated for junction and storage temperatures from –55°C to +175°C. This extended range supports deployment in engine bay ECUs, under-hood sensors, and industrial motor drives where ambient temperatures exceed 125°C. Derating of peak power begins above +25°C per Figure 1 in DS43394 Rev. 3–2.
Does SMF4L90CA-7 require a heatsink for 400W pulse handling?
No heatsink is required. The 400W rating applies to a single 10/1000µs transient event; thermal mass of the DO-219AA package and PCB copper area suffices for energy dissipation. Steady-state power dissipation is limited to 1.0W, and RθJA is 96°C/W - adequate for typical board layouts with ≥1 cm² 2-oz copper pour adjacent to terminals.
How does the bi-directional behavior affect PCB layout compared to uni-directional TVS diodes?
SMF4L90CA-7 has no cathode marking and identical electrical characteristics in both directions, eliminating orientation constraints during placement. Unlike uni-directional devices (e.g., SMF4L90A), it avoids risk of reverse installation and simplifies routing on differential or floating nets - especially beneficial for RS-485, CAN, and audio line protection where polarity is undefined.
Is SMF4L90CA-7 compliant with RoHS 3 and REACH regulations?
Yes. SMF4L90CA-7 carries RoHS 3 compliance (EU Directive 2015/863/EU), with lead content <1000ppm and full exemption reporting per Annex III. It also meets REACH SVHC thresholds (<0.1% w/w) and is halogen-free (Br/Cl <900ppm each, Br+Cl <1500ppm), satisfying major automotive OEM material disclosure requirements.
SMF4L90CA-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):
- 90V
- Voltage - Breakdown (Min):
- 100V
- Voltage - Clamping (Max) @ Ipp:
- 146V
- Current - Peak Pulse (10/1000µs):
- 2.7A
- 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
SMF4L90CA-7 FAQ
1.How can I place an order for SMF4L90CA-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMF4L90CA-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 SMF4L90CA-7 reliable?
The price and inventory of SMF4L90CA-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMF4L90CA-7 is usually 5 days.
3.What payment methods are accepted for SMF4L90CA-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMF4L90CA-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMF4L90CA-7?
SMF4L90CA-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMF4L90CA-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 SMF4L90CA-7?
For technical support, including SMF4L90CA-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMF4L90CA-7 requirements.
6.How does Aetrix verify that SMF4L90CA-7 is sourced from the original manufacturer or authorized distributors?
All SMF4L90CA-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 SMF4L90CA-7 meets industry standards.
7.What is the process for return or replacement of SMF4L90CA-7?
All SMF4L90CA-7 units undergo pre-shipment inspection (PSI). If there is an issue with SMF4L90CA-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 SMF4L90CA-7 part is unused and in its original packaging.
Return procedure for SMF4L90CA-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMF4L90CA-7 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
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
