My Inquiry
My Account
Diodes Incorporated SMBJ75CA-13-F
- Part No.:
- SMBJ75CA-13-F
- Manufacturer:
- Diodes Incorporated
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ75CA-13-F.pdf
- Description:
- TVS DIODE 75VWM 121VC SMB
- Quantity:
- Payment:
- Shipping:
Inventory:1,290
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
SMBJ75CA-13-F from Diodes Incorporated is a bi-directional 600W surface-mount transient voltage suppressor (TVS) diode with 75V reverse standoff voltage, 83.3V minimum breakdown voltage, and 121V maximum clamping voltage at 4.9A peak pulse current. It features glass-passivated die construction, UL 94V-0 molded plastic SMB package, and RoHS-compliant lead-free plating. Used for ESD and surge protection in DC power rails of industrial control I/O modules.
For engineers reviewing the SMBJ75CA-13-F datasheet, SMBJ75CA-13-F pinout, SMBJ75CA-13-F application, or SMBJ75CA-13-F equivalent, key selection criteria include clamping voltage margin relative to system operating voltage, peak pulse current capability under 8.3ms half-sine surge, thermal derating above +25°C, and bi-directional symmetry for AC-coupled signal line protection.
Technical Context
This TVS diode operates as a voltage-clamped shunt protector, responding within nanoseconds to transients exceeding its reverse standoff voltage (VRWM = 75V) by avalanching into low-impedance conduction. Its bi-directional configuration enables symmetrical clamping on both polarities without polarity dependency.
Designed for single-pulse surge events per REA 10/1000μs waveform, it delivers 600W peak pulse power with 4.8W/°C thermal derating above +25°C ambient and supports steady-state dissipation up to 5.0W at TL = +75°C. Reverse leakage remains ≤5.0μA at VRWM.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Pulse Power | 600W - sustains single 8.3ms half-sine surges without failure |
| Reverse Standoff Voltage | 75V - maximum continuous DC or RMS voltage before clamping initiates |
| Breakdown Voltage | 83.3–95.8V - guaranteed avalanche onset range at 1.0mA test current |
| Clamping Voltage | 121V @ 4.9A - maximum voltage seen by protected circuit during specified surge |
| Peak Pulse Current | 4.9A - maximum non-repetitive surge current supported at 121V clamping |
| Package | SMB - surface-mount outline with 3.3–3.94mm height, UL 94V-0 flammability rating |
| Operating Temperature | −55°C to +150°C - suitable for industrial and automotive under-hood environments |
Pinout & Package
Package: SMB (Surface-Mount Small Outline), molded plastic case with matte tin-plated terminals; dimensions: A = 3.30–3.94mm, B = 4.06–4.57mm, C = 1.96–2.21mm, E = 5.00–5.59mm; weight ≈ 0.1g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (Anode) | Bi-directional terminal pair | No polarity marking; symmetric structure allows either terminal to serve as anode or cathode depending on transient polarity |
| Anode (Cathode) | Bi-directional terminal pair | Identical electrical behavior to opposite terminal; no functional distinction in bi-directional configuration |
Key Features
| Feature | Design Value |
|---|---|
| 600W peak pulse power | Enables robust protection against IEC 61000-4-5 Level 4 (4kV/2Ω) surges on 24V/48V industrial buses |
| Glass-passivated die | Improves long-term reliability and moisture resistance versus epoxy-passivated alternatives |
| Bi-directional architecture | Eliminates need for polarity-aware layout; supports AC signal lines and floating bus protection |
| RoHS & halogen-free | Meets EU Directive 2011/65/EU and green manufacturing requirements (<900ppm Br/Cl, <1000ppm Sb) |
Applications
| Industrial PLC I/O Protection | Automotive Body Control Module |
|---|---|
Use Scenario: Protecting 24V digital input channels in programmable logic controllers from induced lightning surges and inductive kickback. IC Role / Device Role / Timing Role: Shunt-type transient voltage suppressor placed across input terminals to clamp surges before reaching isolation barrier or MCU GPIO. Use Value: Limits transient voltage to ≤121V, maintaining safe margin below 150V-rated optocoupler input and preventing latch-up in downstream interface ICs. |
Use Scenario: Safeguarding LIN bus transceivers and sensor supply lines in body electronics against load dump and jump-start transients. IC Role / Device Role / Timing Role: Bi-directional TVS connected between LIN signal line and ground to suppress ±100V fast transients without polarity constraints. Use Value: Symmetric clamping ensures equal protection for both positive and negative-going spikes common in automotive 12V systems. |
| Telecom Power Feeds | Renewable Energy Monitoring |
Use Scenario: Guarding -48V DC power inputs in remote radio units and base station backhaul equipment against telecom-grade surges. IC Role / Device Role / Timing Role: Primary overvoltage clamp on DC feed line upstream of DC-DC converters and PMICs. Use Value: Withstands 600W pulses while holding clamping voltage at 121V-well below 150V input rating of most telecom-grade DC-DC stages. |
Use Scenario: Protecting RS-485 communication lines and analog sensor inputs in solar inverter monitoring units exposed to outdoor surge environments. IC Role / Device Role / Timing Role: Bi-directional TVS placed across differential RS-485 bus (A/B) and ground to suppress common-mode transients. Use Value: 4.9A peak pulse current rating accommodates high-impedance coupling paths typical in long outdoor cable runs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ75CA from Littelfuse (part # SMBJ75CA.TBT) | Identical 75V VRWM, 121V VC @ 4.9A, same SMB package; slightly higher IR (10μA vs 5μA) at VRWM | Same bi-directional use cases; validated in Littelfuse's IEC 61000-4-5 test reports for telecom infrastructure | Select when requiring Littelfuse's certified surge test data or dual-sourcing across Diodes Inc. and Littelfuse supply chains |
| P6SMB75CA from ON Semiconductor | Same 75V VRWM and 121V VC, but rated for 600W at 25°C only (no published derating curve); 1000hr life test data available | Better documented long-term reliability for continuous operation in high-humidity environments like solar farms | Prefer for deployments where extended field lifetime (>10 years) under thermal cycling is prioritized over marginal derating flexibility |
Compared with SMBJ75CA-13-F, the Littelfuse alternative offers identical electrical specs with stronger third-party surge validation, while the ON Semiconductor part provides superior long-term reliability documentation-making the choice dependent on whether certification traceability or lifetime assurance is the dominant design requirement.
Availability
SMBJ75CA-13-F is available at Aetrix Electronics and suitable for industrial PLC I/O protection, automotive body control modules, and telecom power feeds requiring stable component supply and consistent surge performance across production batches.
Supply support for SMBJ75CA-13-F 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 and manufacturing operations across Asia and the Americas.
The SMBJ series belongs to Diodes' transient voltage suppression portfolio, engineered specifically for high-energy surge immunity in industrial automation, automotive electronics, and communications infrastructure where compact size and repeatable clamping performance are critical.
FAQ
What is the maximum clamping voltage of SMBJ75CA-13-F at its rated peak pulse current?
The maximum clamping voltage (VC) is 121V at 4.9A peak pulse current (IPP), measured using the 8.3ms single half-sine waveform per REA standard. This value is guaranteed across the full operating temperature range of −55°C to +150°C and defines the upper voltage limit imposed on protected circuits during surge events.
Is SMBJ75CA-13-F unidirectional or bidirectional, and how does that affect PCB layout?
SMBJ75CA-13-F is bi-directional, indicated by the "C" suffix and absence of cathode band marking. This eliminates polarity sensitivity during placement-either terminal may connect to the protected line or ground. No orientation check is required, simplifying automated assembly and enabling use on AC-coupled or floating signal paths without risk of reverse connection.
Can SMBJ75CA-13-F be used in parallel to increase surge current handling?
No-parallel connection is not recommended due to mismatch in dynamic impedance and avalanche turn-on characteristics. Even minor VBR variations (±12.5V tolerance) cause current imbalance, leading to premature failure of the lower-breakdown unit. For higher current needs, select a higher-rated device such as SMBJ100CA or use a discrete MOV+TVS hybrid approach.
What is the thermal derating behavior of SMBJ75CA-13-F above +25°C ambient?
Peak pulse power derates linearly at 4.8W/°C above +25°C ambient, meaning at +75°C ambient, maximum usable peak pulse power drops to 360W (600W − 50°C × 4.8W/°C). This reflects junction-to-ambient thermal resistance limitations and must be factored into worst-case surge duty cycle analysis for enclosed industrial enclosures.
SMBJ75CA-13-F Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Package/Case:
- DO-214AA, SMB
- Series:
- SMBJ
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 75V
- Voltage - Breakdown (Min):
- 83.3V
- Voltage - Clamping (Max) @ Ipp:
- 121V
- Current - Peak Pulse (10/1000µs):
- 4.9A
- Power - Peak Pulse:
- 600W
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SMB
SMBJ75CA-13-F FAQ
1.How can I place an order for SMBJ75CA-13-F through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ75CA-13-F 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 SMBJ75CA-13-F reliable?
The price and inventory of SMBJ75CA-13-F are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBJ75CA-13-F is usually 5 days.
3.What payment methods are accepted for SMBJ75CA-13-F?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ75CA-13-F transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ75CA-13-F?
SMBJ75CA-13-F orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ75CA-13-F 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 SMBJ75CA-13-F?
For technical support, including SMBJ75CA-13-F datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ75CA-13-F requirements.
6.How does Aetrix verify that SMBJ75CA-13-F is sourced from the original manufacturer or authorized distributors?
All SMBJ75CA-13-F 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 SMBJ75CA-13-F meets industry standards.
7.What is the process for return or replacement of SMBJ75CA-13-F?
All SMBJ75CA-13-F units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ75CA-13-F, 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 SMBJ75CA-13-F part is unused and in its original packaging.
Return procedure for SMBJ75CA-13-F:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBJ75CA-13-F 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 and sourcing framework covering lifecycle verification, lifetime-buy calculations, replacement qualification, supplier checks and counterfeit-risk controls.
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
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…
