My Inquiry
My Account
Vishay General Semiconductor - Diodes Division SMBJ11CA-M3/5B
;;2.jpg)
- Part No.:
- SMBJ11CA-M3/5B
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ11CA-M3/5B.pdf
- Description:
- TVS DIODE 11VWM 18.2VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:5,766
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
SMBJ11CA-M3/5B from Vishay General Semiconductor is a bidirectional surface-mount Transient Voltage Suppressor (TVS) diode in the SMB (DO-214AA) package, designed for robust overvoltage protection of sensitive electronics. It features a 11 V stand-off voltage (VWM), 12.2–13.5 V breakdown voltage (VBR) at 1 mA, 18.2 V maximum clamping voltage (VC) at 33 A peak pulse current, and 600 W peak pulse power rating with a 10/1000 µs waveform - deployed on power rails and signal lines in industrial sensor interfaces.
For engineers reviewing the SMBJ11CA-M3/5B datasheet, SMBJ11CA-M3/5B pinout, SMBJ11CA-M3/5B application, or SMBJ11CA-M3/5B equivalent, this device is evaluated for ESD and surge immunity in bidirectional AC-coupled circuits, automotive body control modules, and I/O protection where low-leakage (<5 µA at VWM) and fast response (<1 ns) are required.
Technical Context
The SMBJ11CA-M3/5B operates as a symmetrical avalanche diode, conducting in both directions when transient voltage exceeds its breakdown threshold. Its bidirectional architecture eliminates polarity concerns in AC or floating signal paths, and it maintains stable clamping performance across -55 °C to +150 °C junction temperature range.
It delivers 33 A peak pulse current (IPPM) under standardized 10/1000 µs surge conditions, with low incremental surge resistance enabling tight voltage control during transients. The device meets MSL Level 1 per J-STD-020 and supports reflow soldering up to 260 °C peak temperature.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 11 V - Maximum continuous reverse operating voltage before conduction begins; defines safe operating margin for 12 V nominal systems. |
| VBR (min/max) | 12.2 V / 13.5 V at 1 mA - Confirmed breakdown range ensures reliable triggering without premature conduction in normal operation. |
| VC @ IPPM | 18.2 V at 33 A - Clamped voltage during 600 W surge limits stress on downstream ICs such as microcontrollers or RS-485 transceivers. |
| IPPM | 33 A - Peak surge current capability with 10/1000 µs waveform; validates protection against IEC 61000-4-5 Level 3 (1 kV/2 Ω) surges. |
| PPPM | 600 W - Peak pulse power rating determines energy absorption capacity for transient events like inductive switch-off or lightning-induced coupling. |
| Leakage ID | <5 µA at 11 V - Ultra-low reverse leakage preserves signal integrity and battery life in always-on sensor nodes. |
| TJ max | +150 °C - High junction temperature rating supports use in under-hood automotive or enclosed industrial enclosures. |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, halogen-free, RoHS-compliant, matte tin-plated terminals. Dimensions: 4.57 mm × 3.94 mm × 2.20 mm (L × W × H). No polarity marking - symmetric bidirectional construction.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (symmetrical) | Transient conduction path | Both terminals function identically; no cathode band marking - enables placement without orientation check in automated assembly. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC signals, differential buses (e.g., CAN, RS-485), and ungrounded sensor outputs without polarity constraints. |
| 600 W peak pulse power | Withstands high-energy transients from inductive load switching (e.g., solenoid drivers) while maintaining sub-18.2 V clamping. |
| Low clamping ratio (VC/VBR ≈ 1.42) | Minimizes overvoltage overshoot during surge events, reducing risk of latch-up or gate oxide damage in protected MOSFETs or logic ICs. |
| MSL Level 1 moisture sensitivity | Allows unlimited floor life and standard reflow without baking, simplifying SMT line integration and reducing manufacturing overhead. |
| Halogen-free & RoHS-compliant (M3 suffix) | Meets environmental compliance requirements for industrial and automotive applications without compromising thermal or electrical performance. |
Applications
| Industrial Sensor Interface | Automotive Body Control Module |
|---|---|
Use Scenario: Protecting analog output lines (e.g., 4–20 mA current loop) and digital I/O (e.g., LIN bus) from ESD and load dump-induced transients in factory automation sensors. IC Role / Device Role / Timing Role: Bidirectional TVS clamp placed directly at connector entry point to shunt surge energy before reaching precision ADC or microcontroller GPIO. Use Value: Limits transient voltage to ≤18.2 V, preventing damage to 3.3 V or 5 V interface circuitry while maintaining <5 µA leakage for measurement accuracy. |
Use Scenario: Safeguarding door module microcontrollers and window motor drivers against ISO 7637-2 pulse 1/2a/5a transients and ESD events in 12 V vehicle networks. IC Role / Device Role / Timing Role: Primary front-end surge suppressor on power input and LIN communication lines, mounted adjacent to connectors per OEM layout guidelines. Use Value: Withstands 33 A surge current and clamps to 18.2 V, ensuring system-level compliance with automotive EMC standards without derating. |
| Telecom Power Supply Input | Consumer USB-C Port Protection |
Use Scenario: Secondary overvoltage protection on DC input rails of PoE-powered switches and base station power supplies exposed to lightning-induced surges. IC Role / Device Role / Timing Role: Coordinated clamping device downstream of primary GDT or MOV, absorbing residual energy after coarse suppression stages. Use Value: Provides precise 11 V standoff and 18.2 V clamping to protect 12 V DC-DC controllers and PMICs without false triggering during brownout conditions. |
Use Scenario: Bidirectional ESD and surge protection for USB-C CC and SBU pins in portable devices, where space-constrained layouts require minimal component count. IC Role / Device Role / Timing Role: Standalone TVS replacing multi-element arrays due to symmetrical response and low capacitance (<100 pF). Use Value: Delivers <1 ns response time and 18.2 V clamping to meet IEC 61000-4-2 Level 4 (15 kV air/8 kV contact) without signal distortion on high-speed sideband channels. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ11CA-E3/5B | Same electrical specs; RoHS-compliant but not halogen-free (E3 vs. M3 suffix); identical SMB package and MSL Level 1 rating. | Preferred for commercial-grade designs where halogen-free requirement is not mandated; lower cost in non-automotive contexts. | Select SMBJ11CA-E3/5B when environmental compliance only requires RoHS, not halogen-free materials. |
| SMAJ11CA-M3 | Lower 400 W peak pulse power (vs. 600 W); same VWM, VBR, and VC; SMA (DO-214AC) package with smaller footprint (4.32 mm × 2.62 mm). | Suitable for space-constrained consumer PCBs with lower surge threat levels (e.g., IEC 61000-4-5 Level 2), but not for industrial 1 kV/2 Ω testing. | Choose SMAJ11CA-M3 only if board area is critical and surge energy is limited to ≤400 W. |
Compared with SMBJ11CA-E3/5B, the SMBJ11CA-M3/5B adds halogen-free compliance for stricter environmental programs; versus SMAJ11CA-M3, it provides 50 % higher surge energy handling in a slightly larger SMB package - critical for automotive and industrial reliability validation.
Availability
SMBJ11CA-M3/5B is available at Aetrix Electronics and suitable for industrial sensor interfaces, automotive body control modules, telecom power supply inputs, and consumer USB-C port protection requiring stable component supply and full traceability.
Supply support for SMBJ11CA-M3/5B 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
Vishay General Semiconductor is a global leader in discrete semiconductors, specializing in diodes, rectifiers, MOSFETs, and protection devices with emphasis on reliability, efficiency, and application-specific optimization.
The SMBJ series is engineered for high-energy transient suppression in harsh environments - targeting automotive, industrial, and telecom applications where consistent clamping, low leakage, and AEC-Q101 readiness (in HE3/HM3 variants) are essential.
FAQ
What is the clamping voltage of SMBJ11CA-M3/5B at its rated peak pulse current?
The SMBJ11CA-M3/5B has a maximum clamping voltage (VC) of 18.2 V at its rated peak pulse current of 33 A, measured using the standardized 10/1000 µs waveform. This value ensures downstream components see limited overvoltage during surge events, and it is verified per ANSI/IEEE C62.35. The SMBJ11CA-M3/5B maintains this clamping performance across its full operating temperature range.
Is SMBJ11CA-M3/5B suitable for automotive applications?
The SMBJ11CA-M3/5B itself is commercial-grade (M3 suffix), not AEC-Q101 qualified; however, it shares identical electrical and thermal characteristics with the AEC-Q101-qualified variant SMBJ11CA-HM3_B/I. For non-safety-critical automotive subsystems (e.g., infotainment power rails), SMBJ11CA-M3/5B is widely used - but formal qualification requires the HM3 suffix. Always verify OEM requirements before deployment.
How does the bidirectional design of SMBJ11CA-M3/5B affect PCB layout?
The SMBJ11CA-M3/5B has no polarity marking and functions identically in either orientation, eliminating orientation checks during automated placement and simplifying routing on differential or AC-coupled lines. This symmetry allows direct placement across signal pairs (e.g., CAN_H/CAN_L) without directional constraints - reducing layout complexity and assembly errors compared to unidirectional TVS diodes.
What is the thermal resistance of SMBJ11CA-M3/5B, and how does it impact power dissipation?
The SMBJ11CA-M3/5B has a typical junction-to-ambient thermal resistance (RθJA) of 100 °C/W when mounted on minimum recommended copper pads (0.2" × 0.2"). This value limits continuous power dissipation to 5.0 W at 50 °C ambient, but the device is intended for transient, not steady-state, operation. Its 150 °C max junction temperature ensures robustness during short-duration surges even in thermally constrained layouts.
Does SMBJ11CA-M3/5B meet any industry-standard surge immunity specifications?
Yes - the SMBJ11CA-M3/5B's 600 W peak pulse power and 33 A IPPM rating align with IEC 61000-4-5 Level 3 (1 kV line-to-earth, 2 Ω source impedance) when applied with appropriate PCB layout (e.g., short traces, ground plane coupling). Its 18.2 V clamping voltage ensures protected ICs remain within safe operating limits during such events, making SMBJ11CA-M3/5B a validated choice for industrial and telecom surge protection.
SMBJ11CA-M3/5B Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AA, SMB
- Series:
- TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 11V
- Voltage - Breakdown (Min):
- 12.2V
- Voltage - Clamping (Max) @ Ipp:
- 18.2V
- Current - Peak Pulse (10/1000µs):
- 33A
- 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:
- DO-214AA (SMBJ)
SMBJ11CA-M3/5B FAQ
1.How can I place an order for SMBJ11CA-M3/5B through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ11CA-M3/5B 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 SMBJ11CA-M3/5B reliable?
The price and inventory of SMBJ11CA-M3/5B are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBJ11CA-M3/5B is usually 5 days.
3.What payment methods are accepted for SMBJ11CA-M3/5B?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ11CA-M3/5B transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ11CA-M3/5B?
SMBJ11CA-M3/5B orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ11CA-M3/5B 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 SMBJ11CA-M3/5B?
For technical support, including SMBJ11CA-M3/5B datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ11CA-M3/5B requirements.
6.How does Aetrix verify that SMBJ11CA-M3/5B is sourced from the original manufacturer or authorized distributors?
All SMBJ11CA-M3/5B 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 SMBJ11CA-M3/5B meets industry standards.
7.What is the process for return or replacement of SMBJ11CA-M3/5B?
All SMBJ11CA-M3/5B units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ11CA-M3/5B, 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 SMBJ11CA-M3/5B part is unused and in its original packaging.
Return procedure for SMBJ11CA-M3/5B:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBJ11CA-M3/5B 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
Comparator circuit design covering voltage thresholds, input limits, open-collector outputs, LM393 wiring, op-amp differences, hysteresis, timing, window detection and practical fault diagnosis.
Schmitt triggers use separate rising and falling thresholds to stabilize slow or noisy signals. This guide covers hysteresis, 74HC14 and 74HCT14 selection, comparator calculations, RC oscillators and p…
Counterfeit components can hide behind convincing markings and passing basic function tests. This engineering reference covers source traceability, external inspection, X-ray, XRF, electrical testing, …
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 …
