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Diodes Incorporated SMF4L58CA-7
- Part No.:
- SMF4L58CA-7
- Manufacturer:
- Diodes Incorporated
- Category:
- TVS Diodes
- Package:
- DO-219AA
- Datasheet:
-
SMF4L58CA-7.pdf
- Description:
- TRANSIENT VOLTAGE SUPPRESSOR PP
- Quantity:
- Payment:
- Shipping:
Inventory:9,438
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Product details
Overview
SMF4L58CA-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 on data lines and power rails. It features a 58V working peak reverse voltage (VRWM), 64.4V minimum breakdown voltage (VBR), 93.6V maximum clamping voltage (VC) at 4.3A peak pulse current, and 400W peak pulse power dissipation (10/1000µs waveform). It is used in automotive infotainment USB interfaces to protect against ISO 10605 ±30kV contact discharge.
For engineers reviewing the SMF4L58CA-7 datasheet, SMF4L58CA-7 pinout, SMF4L58CA-7 application, or SMF4L58CA-7 equivalent, key selection criteria include clamping voltage margin relative to system rail, IEC 61000-4-2 ESD robustness, bi-directional symmetry for AC-coupled signal lines, thermal resistance (RθJA = 96°C/W), and AEC-Q200 readiness for automotive deployment.
Technical Context
This bi-directional TVS operates symmetrically across both polarities, with identical VBR min/max (64.4V / 71.2V) and VC (93.6V) under 4.3A IPP. Its sub-5ns response time ensures suppression before downstream ICs experience overstress during fast transients like ESD or inductive switching spikes.
Designed for surface-mount integration on compact PCBs, it leverages a low-profile DO-219AA package with 0.016g mass and 1.9mm width, enabling placement adjacent to connectors without compromising board real estate. Thermal performance is characterized by RθJC = 18°C/W and RθJS = 70°C/W, supporting reliable operation up to +175°C junction temperature.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRWM | 58V - Maximum continuous reverse operating voltage before leakage exceeds 0.5µA; sets upper limit for protected line voltage. |
| VBR (min) | 64.4V - Minimum breakdown voltage at 1mA test current; defines onset of avalanche conduction during overvoltage events. |
| VC @ IPP | 93.6V at 4.3A - Clamping voltage measured at peak pulse current; determines maximum stress imposed on downstream circuitry. |
| PPK | 400W - Peak pulse power handling per 10/1000µs waveform; supports robust protection against IEC 61000-4-5 Level 4 surges. |
| ESD Rating | ±30kV air / ±30kV contact per IEC 61000-4-2 - Confirmed immunity to worst-case human-body-model ESD events without degradation. |
| Operating Temp | −55°C to +175°C - Full industrial and automotive-grade temperature range; validated for under-hood and battery management use. |
| RθJA | 96°C/W - Junction-to-ambient thermal resistance on standard FR-4 board; informs derating above +25°C ambient. |
Pinout & Package
Package: DO-219AA - ultra-low-profile surface-mount plastic package (2.80mm × 1.90mm × 0.60mm height), halogen-free, RoHS-compliant, moisture sensitivity level 1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (Cathode Band Absent) | Bi-directional terminal | No polarity marking indicates symmetrical construction; either end serves as anode or cathode depending on transient polarity. |
| Cathode (Cathode Band Absent) | Bi-directional terminal | Identical electrical behavior in both directions; enables single-device protection of AC signals or floating buses without orientation constraints. |
Key Features
| Feature | Design Value |
|---|---|
| Bi-directional clamping symmetry | Matched VBR (64.4V/71.2V) and VC (93.6V) in both polarities - eliminates need for dual unidirectional devices on differential or AC-coupled lines. |
| Ultra-fast transient response | <5.0ns turn-on time from 0V to VBR - engages before most microcontrollers or transceivers can be damaged by ESD or lightning-induced spikes. |
| Automotive-ready qualification | Manufactured in IATF 16949-certified facilities; supports PPAP and change control for AEC-Q200-compliant designs (Q-suffix variants available). |
| Green packaging compliance | Halogen- and antimony-free molding compound (<900ppm Br+Cl, <1000ppm Sb); UL 94V-0 flammability rating ensures safety in enclosed modules. |
Applications
| Automotive Infotainment USB | Industrial CAN Bus Interface |
|---|---|
|
Use Scenario: Protecting USB 2.0 D+/D− lines in head unit modules exposed to ESD during connector mating/unmating. IC Role / Device Role / Timing Role: Bi-directional TVS placed directly at USB connector footprint to clamp ±30kV contact discharge before reaching USB transceiver IC. Use Value: Prevents latch-up or permanent damage to USB PHY while maintaining signal integrity due to low capacitance (typ. 100pF) and matched channel clamping. |
Use Scenario: Safeguarding CAN_H/CAN_L differential pair in vehicle body control modules subjected to load dump and jump-start transients. IC Role / Device Role / Timing Role: Dual-line TVS mounted across CAN bus to suppress common-mode surges up to 400W without disrupting 1Mbps signaling. Use Value: Maintains CAN communication continuity during ISO 7637-2 Pulse 5a (load dump) events by limiting bus voltage to ≤93.6V peak. |
| Smart Meter Power Input | Medical Sensor Signal Conditioning |
|
Use Scenario: Protecting 24V DC input stage of utility smart meters against induced surges from nearby lightning strikes. IC Role / Device Role / Timing Role: Primary TVS on main power rail upstream of DC-DC converter, sized to absorb 400W pulses without thermal runaway. Use Value: Enables compliance with IEC 61000-4-5 Level 4 (4kV line-earth) while sustaining 1.0W steady-state dissipation at full load. |
Use Scenario: Shielding analog front-end inputs of portable ECG monitors from electrostatic discharge during patient handling. IC Role / Device Role / Timing Role: Low-leakage (0.5µA @ 58V) bi-directional TVS on electrode input traces to prevent amplifier saturation or offset shift. Use Value: Preserves DC accuracy and noise floor (<1nV/√Hz) by avoiding parasitic conduction paths while delivering ±30kV ESD immunity. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar bi-directional TVS protection applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ58CA-TP | DO-214AC package; higher RθJA (110°C/W); same VRWM/VBR/VC specs. | Larger footprint (4.3mm × 2.6mm) limits routing density; less suitable for space-constrained USB layouts. | Select when legacy SMA footprint compatibility is required and thermal margin allows higher ambient operation. |
| SP1003-050 | 0.5pF typical capacitance; lower PPK (300W); 5V VRWM - not voltage-compatible with 58V rail. | Designed for high-speed data (USB 3.0, HDMI); unsuitable for 58V power line protection. | Choose only for ultra-low-capacitance signal-line protection where voltage rating matches system requirements. |
Compared with SMAJ58CA-TP and SP1003-050, SMF4L58CA-7 delivers optimal balance of compact DO-219AA size, 400W surge capacity, and precise 58V system-level coordination-making it preferred for next-gen automotive and industrial power-rail protection where board area and thermal efficiency are critical.
Availability
SMF4L58CA-7 is available at Aetrix Electronics and suitable for automotive infotainment systems, industrial CAN networks, and smart meter power inputs requiring stable component supply with guaranteed long-term manufacturability.
Supply support for SMF4L58CA-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, manufacturing, and sales operations across Asia, Europe, and North America.
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 minimal footprint.
FAQ
What is the polarity configuration of SMF4L58CA-7?
SMF4L58CA-7 is a bi-directional TVS diode with no cathode band marking, indicating symmetrical avalanche characteristics in both forward and reverse bias. This enables single-device protection of AC-coupled or differential signal lines such as USB D+/D− or CAN_H/CAN_L without orientation dependency.
Does SMF4L58CA-7 meet automotive qualification standards?
Yes - SMF4L58CA-7 is manufactured in IATF 16949-certified facilities and supports PPAP documentation. While the standard part is not AEC-Q200 certified, its Q-suffix automotive-grade variant (e.g., SMF4L58CAQ-7) is fully qualified to AEC-Q200 Rev D for temperature cycling, humidity, and mechanical shock testing.
How does the DO-219AA package affect thermal performance?
The DO-219AA package provides RθJC = 18°C/W and RθJS = 70°C/W, significantly better than larger packages like DO-214AC. Its low 0.016g mass and optimized copper lead frame enable faster heat dissipation into the PCB, allowing sustained operation at +125°C ambient when mounted on 2 oz. copper pads per Diodes' recommended layout.
Can SMF4L58CA-7 replace unidirectional TVS diodes in existing designs?
No - SMF4L58CA-7 is strictly bi-directional and lacks a defined anode/cathode. Replacing a unidirectional TVS (e.g., SMF4L58A-7) requires verifying that the protected circuit has no DC bias across the TVS terminals; otherwise, unintended conduction may occur during normal operation.
SMF4L58CA-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):
- 58V
- Voltage - Breakdown (Min):
- 64.4V
- Voltage - Clamping (Max) @ Ipp:
- 93.6V
- Current - Peak Pulse (10/1000µs):
- 4.3A
- 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
SMF4L58CA-7 FAQ
1.How can I place an order for SMF4L58CA-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMF4L58CA-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 SMF4L58CA-7 reliable?
The price and inventory of SMF4L58CA-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMF4L58CA-7 is usually 5 days.
3.What payment methods are accepted for SMF4L58CA-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMF4L58CA-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMF4L58CA-7?
SMF4L58CA-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMF4L58CA-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 SMF4L58CA-7?
For technical support, including SMF4L58CA-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMF4L58CA-7 requirements.
6.How does Aetrix verify that SMF4L58CA-7 is sourced from the original manufacturer or authorized distributors?
All SMF4L58CA-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 SMF4L58CA-7 meets industry standards.
7.What is the process for return or replacement of SMF4L58CA-7?
All SMF4L58CA-7 units undergo pre-shipment inspection (PSI). If there is an issue with SMF4L58CA-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 SMF4L58CA-7 part is unused and in its original packaging.
Return procedure for SMF4L58CA-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMF4L58CA-7 Tags
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Diodes Incorporated
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Diodes Incorporated
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Diodes Incorporated
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Diodes Incorporated
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