My Inquiry
My Account
Vishay General Semiconductor - Diodes Division SMBJ11CAHM3_B/H
- Part No.:
- SMBJ11CAHM3_B/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ11CAHM3_B/H.pdf
- Description:
- 600W,11V 5%,BIDIR,SMB TVS
- Quantity:
- Payment:
- Shipping:
Inventory:6,595
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
SMBJ11CAHM3_B/H from Vishay General Semiconductor is a bidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMB (DO-214AA) package, designed for clamping voltage transients on signal or power lines. It features a 11 V standoff voltage (VWM), 12.2–13.5 V breakdown range (VBR at 1 mA), 18.2 V maximum clamping voltage (VC) at 33 A peak pulse current, and 600 W peak pulse power (10/1000 µs waveform). It is used to protect MOSFETs, ICs, and sensor signal lines in industrial and telecom equipment against ESD and inductive switching surges.
For engineers reviewing the SMBJ11CAHM3_B/H datasheet, SMBJ11CAHM3_B/H pinout, SMBJ11CAHM3_B/H application, or SMBJ11CAHM3_B/H equivalent, key selection criteria include bidirectional clamping capability, low clamping ratio (VC/VBR ≈ 1.45), AEC-Q101 qualification status, halogen-free RoHS compliance (HM3 suffix), and compatibility with automated SMT placement on standard PCB pad layouts.
Technical Context
This TVS diode operates as a voltage-clamping protection device across two terminals with symmetrical reverse/forward conduction behavior. Its silicon avalanche junction provides sub-nanosecond response time and low dynamic impedance during transient events, enabling effective suppression of fast-rising ESD (IEC 61000-4-2) and surge (IEC 61000-4-5) waveforms.
The SMBJ11CAHM3_B/H is rated for 150 °C maximum junction temperature, exhibits 0.080 %/°C temperature coefficient of VBR, and delivers 33 A peak pulse current under standardized 10/1000 µs waveform conditions when mounted on 5.0 mm × 5.0 mm copper pads - confirming its suitability for high-energy transient environments without thermal runaway.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 11 V - Maximum continuous reverse operating voltage before significant leakage; defines safe working margin below clamping threshold. |
| VBR (min/max) | 12.2 V / 13.5 V at 1 mA - Confirmed breakdown range ensures reliable turn-on within spec; tight tolerance supports predictable protection onset. |
| VC @ IPPM | 18.2 V at 33 A - Clamping voltage under full-rated 600 W surge; low value minimizes stress on downstream ICs. |
| PPPM | 600 W (10/1000 µs) - Peak pulse power handling capacity; validates robustness against lightning-induced surges and inductive kickback. |
| ID @ VWM | 5.0 µA max - Reverse leakage at standoff voltage; low value prevents power loss and false triggering in battery-powered systems. |
| TJ max. | 150 °C - Maximum junction temperature rating; enables operation in high-ambient industrial or automotive under-hood environments. |
| Package | SMB (DO-214AA) - Standardized surface-mount outline with 5.59 mm × 4.06 mm footprint; compatible with JEDEC MS-012AC and automated pick-and-place. |
Pinout & Package
Package: SMB (DO-214AA), molded plastic case with matte tin-plated leads, MSL Level 1 (260 °C reflow peak), UL 94 V-0 rated compound. Bidirectional construction means no polarity marking; both terminals are functionally identical.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode / Cathode (symmetrical) | Transient conduction path | Both terminals serve as bidirectional clamping nodes; connected across protected line and ground (or between differential lines) without orientation dependency. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables symmetric protection on AC lines, data buses, or ungrounded interfaces without polarity constraints. |
| 600 W peak pulse power | Supports IEC 61000-4-5 Level 4 surge immunity (4 kV line-to-ground) with margin when properly laid out. |
| Halogen-free & RoHS-compliant (HM3) | Fulfills environmental compliance requirements for industrial and automotive end equipment without compromising thermal or electrical performance. |
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and surge endurance - suitable for body electronics and infotainment power rails. |
| Low clamping ratio (VC/VBR ≈ 1.45) | Minimizes overvoltage exposure to protected ICs, reducing risk of latch-up or gate oxide damage in sensitive CMOS inputs. |
Applications
| Industrial Motor Control | Automotive Body Control Module |
|---|---|
|
Use Scenario: Protection of gate drivers and microcontroller I/O pins against back-EMF spikes from relay and solenoid switching. IC Role / Device Role / Timing Role: Voltage clamping element placed directly at connector or IC input to limit transient excursions below 18.2 V. Use Value: Prevents destructive overvoltage on 3.3 V/5 V logic inputs while maintaining signal integrity during 100 ms inductive load switching cycles. |
Use Scenario: Surge suppression on LIN bus lines and power supply inputs in door modules and seat controllers. IC Role / Device Role / Timing Role: Bidirectional TVS shunting transient energy from ISO 7637-2 pulse 1/2a/5a events to chassis ground. Use Value: Ensures uninterrupted communication during load dump and jump-start scenarios due to 150 °C junction rating and AEC-Q101 validation. |
| Telecom Power Interface | Consumer Sensor Hub |
|
Use Scenario: Input-stage protection on 12 V DC power feeds entering base station remote radio units. IC Role / Device Role / Timing Role: Primary clamping device absorbing 600 W surges per IEC 61000-4-5 Ed. 3, coordinated with upstream MOVs. Use Value: Maintains system uptime by limiting voltage overshoot to ≤18.2 V during 2 Ω/12 Ω coupled surges, preventing DC-DC converter latch-up. |
Use Scenario: ESD protection for I²C and analog sensor lines (e.g., temperature, humidity) in smart home hubs. IC Role / Device Role / Timing Role: Low-capacitance (<50 pF typical) bidirectional clamp placed adjacent to connector to divert 8 kV contact discharge. Use Value: Preserves signal fidelity on 400 kHz I²C buses while meeting IEC 61000-4-2 Level 4 without adding propagation delay or crosstalk. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar TVS diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ11CAHE3_B/H | Same electrical specs, but RoHS-compliant (E3) instead of halogen-free (HM3); no AEC-Q101 qualification. | Suitable for commercial-grade industrial equipment where halogen-free requirement is not mandated. | Select when cost sensitivity outweighs halogen-free mandate and automotive qualification is unnecessary. |
| SMCJ11CAHM3_A/H | Same VWM/VC, but larger SMC (DO-214AB) package; higher 1500 W PPPM rating and lower RθJA (50 °C/W). | Better suited for high-power surge environments (e.g., AC mains input) requiring enhanced thermal dissipation. | Choose when board space allows larger footprint and system-level surge testing exceeds 600 W requirements. |
Compared with SMBJ11CAHE3_B/H, the SMBJ11CAHM3_B/H adds halogen-free compliance and AEC-Q101 qualification without sacrificing clamping performance; versus SMCJ11CAHM3_A/H, it trades higher surge capacity and thermal margin for compact SMB footprint and lower profile - ideal for space-constrained PCBs with defined 600 W surge needs.
Availability
SMBJ11CAHM3_B/H is available at Aetrix Electronics and suitable for industrial motor control, automotive body electronics, and telecom power interface designs requiring stable component supply, halogen-free compliance, and AEC-Q101 validation.
Supply support for SMBJ11CAHM3_B/H 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, TVS devices, and optoelectronics with emphasis on reliability, efficiency, and application-specific optimization.
The SMBJ series was developed for high-reliability transient suppression in space-constrained, high-volume SMT applications - targeting industrial automation, automotive subsystems, and communications infrastructure where consistent clamping and long-term stability are critical.
FAQ
What does the "CA" suffix indicate in SMBJ11CAHM3_B/H?
The "CA" suffix denotes a bidirectional configuration, meaning SMBJ11CAHM3_B/H provides symmetrical clamping in both polarities - essential for protecting AC-coupled signals, differential buses like RS-485, or ungrounded power rails where polarity reversal may occur during transients.
Is SMBJ11CAHM3_B/H suitable for automotive applications?
Yes - SMBJ11CAHM3_B/H carries AEC-Q101 qualification (indicated by HM3 suffix), validating its reliability for automotive use cases including body control modules, lighting drivers, and infotainment power supplies under extended temperature and vibration stress conditions.
How does the clamping voltage of SMBJ11CAHM3_B/H compare to its standoff voltage?
SMBJ11CAHM3_B/H has a 11 V standoff voltage (VWM) and clamps at 18.2 V (VC) under 33 A surge current, yielding a clamping ratio of ~1.65. This margin ensures protected circuits remain below absolute maximum ratings while allowing sufficient headroom for normal operating variations.
What is the thermal resistance of SMBJ11CAHM3_B/H, and how does it affect layout?
SMBJ11CAHM3_B/H has a typical RθJA of 100 °C/W when mounted on minimum recommended 5.0 mm × 5.0 mm copper pads. To maintain safe junction temperature under repeated surges, designers must adhere to this pad layout - reducing thermal resistance improves surge endurance and longevity.
Does SMBJ11CAHM3_B/H require orientation during PCB placement?
No - SMBJ11CAHM3_B/H is a bidirectional TVS diode with no polarity marking; both terminals are functionally identical. It can be placed in either orientation on the PCB, simplifying assembly and eliminating orientation-related manufacturing errors.
SMBJ11CAHM3_B/H Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AA, SMB
- Series:
- TransZorb®
- Packaging:
- Bulk
- 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:
- Telecom
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AA (SMB)
SMBJ11CAHM3_B/H FAQ
1.How can I place an order for SMBJ11CAHM3_B/H through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ11CAHM3_B/H 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 SMBJ11CAHM3_B/H reliable?
The price and inventory of SMBJ11CAHM3_B/H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBJ11CAHM3_B/H is usually 5 days.
3.What payment methods are accepted for SMBJ11CAHM3_B/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ11CAHM3_B/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ11CAHM3_B/H?
SMBJ11CAHM3_B/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ11CAHM3_B/H 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 SMBJ11CAHM3_B/H?
For technical support, including SMBJ11CAHM3_B/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ11CAHM3_B/H requirements.
6.How does Aetrix verify that SMBJ11CAHM3_B/H is sourced from the original manufacturer or authorized distributors?
All SMBJ11CAHM3_B/H 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 SMBJ11CAHM3_B/H meets industry standards.
7.What is the process for return or replacement of SMBJ11CAHM3_B/H?
All SMBJ11CAHM3_B/H units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ11CAHM3_B/H, 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 SMBJ11CAHM3_B/H part is unused and in its original packaging.
Return procedure for SMBJ11CAHM3_B/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBJ11CAHM3_B/H 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
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 …
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…
