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Vishay General Semiconductor - Diodes Division SMBJ7.0CAHM3_B/I
- Part No.:
- SMBJ7.0CAHM3_B/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ7.0CAHM3_B/I.pdf
- Description:
- 600W,7.0V 5%,BIDIR,SMB TVS
- Quantity:
- Payment:
- Shipping:
Inventory:2,078
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Product details
Overview
SMBJ7.0CAHM3_B/I 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 and power lines. It features a 7.0 V stand-off voltage (VWM), 600 W peak pulse power (10/1000 µs), and clamps to ≤12.0 V at 50.0 A peak pulse current - protecting sensitive ICs, MOSFETs, and sensor interfaces in industrial and automotive electronics.
For engineers reviewing the SMBJ7.0CAHM3_B/I datasheet, SMBJ7.0CAHM3_B/I pinout, SMBJ7.0CAHM3_B/I application, or SMBJ7.0CAHM3_B/I equivalent, this device is selected for robust ESD and surge protection where bidirectional clamping, low clamping voltage, and AEC-Q101 qualification are required in space-constrained PCB layouts.
Technical Context
This bidirectional TVS operates symmetrically across both polarities, with breakdown voltage (VBR) specified at 7.78–8.60 V (min/max) at 10 mA test current. Its clamping behavior is defined by a maximum VC of 12.0 V at IPPM = 50.0 A under 10/1000 µs waveform, enabling reliable protection of 3.3 V and 5 V logic interfaces without latch-up risk.
Thermally, it exhibits RθJA = 100 °C/W and RθJL = 20 °C/W, supporting operation up to TJ = +150 °C. The HM3 suffix confirms halogen-free, RoHS-compliant construction with AEC-Q101 qualification - meeting automotive-grade reliability requirements for under-hood and infotainment systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 7.0 V - maximum continuous reverse operating voltage before clamping begins; compatible with 5 V system rails. |
| VBR (min/max) | 7.78 V / 8.60 V at IT = 10 mA - ensures predictable turn-on threshold with tight tolerance for consistent protection timing. |
| VC @ IPPM | 12.0 V at 50.0 A (10/1000 µs) - limits transient voltage seen by downstream circuitry to safe levels during surge events. |
| PPPM | 600 W - peak pulse power handling capability enables suppression of high-energy transients per IEC 61000-4-5 Level 4. |
| ID @ VWM | 200 µA max - low leakage preserves signal integrity and minimizes standby power loss in always-on circuits. |
| TJ max. | +150 °C - supports operation in harsh environments including automotive engine control units and industrial motor drives. |
| Package | SMB (DO-214AA) - standardized surface-mount footprint with 5.21 mm × 4.06 mm body and 2.20 mm height for automated assembly. |
Pinout & Package
Package: SMB (DO-214AA), bidirectional configuration - no polarity marking; symmetrical terminals with identical electrical behavior in either direction.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode / Cathode (symmetrical) | Transient conduction path | Both terminals function identically; clamping occurs when voltage magnitude exceeds VBR in either polarity - eliminates orientation concerns during placement. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC-coupled or floating signal lines (e.g., RS-485, CAN, USB D+/D−) without external polarity management. |
| AEC-Q101 qualified (HM3 suffix) | Validated for automotive applications including infotainment, ADAS sensors, and body control modules requiring zero-defect reliability. |
| 600 W peak pulse power (10/1000 µs) | Withstands repeated surges per ISO 7637-2 Pulse 1/2a/3a and IEC 61000-4-5 Combination Wave (1.2/50 µs + 8/20 µs) testing protocols. |
| Halogen-free & RoHS-compliant | Meets environmental compliance mandates for global OEMs and industrial equipment sold in EU, China, and North America. |
| MSL Level 1 (260 °C peak reflow) | Supports standard lead-free SMT reflow profiles without moisture sensitivity concerns or baking requirements. |
Applications
| Automotive Sensor Interface Protection | Industrial RS-485 Communication Line |
|---|---|
|
Use Scenario: Protecting analog output pins of pressure/temperature sensors in engine control modules exposed to load dump and inductive switching noise. IC Role / Device Role / Timing Role: Bidirectional TVS clamping element placed directly at connector entry point to shunt transients before reaching ADC input or signal conditioner. Use Value: Limits voltage excursion to ≤12.0 V during 50 A surge events, preserving sensor accuracy and preventing microcontroller reset or damage. |
Use Scenario: Shielding differential data lines in factory automation PLCs against EFT bursts and lightning-induced surges on long cable runs. IC Role / Device Role / Timing Role: Common-mode transient suppressor mounted across A/B bus lines to clamp common-mode overvoltage while maintaining signal integrity. Use Value: Maintains <12.0 V differential clamping margin relative to 5 V supply rail, ensuring RS-485 transceivers remain within absolute maximum ratings. |
| Consumer USB Port ESD Protection | Power Supply Input Surge Suppression |
|
Use Scenario: Safeguarding USB 2.0 D+ and D− lines in smart home hubs against human-body-model (HBM) ESD events up to ±15 kV. IC Role / Device Role / Timing Role: Low-capacitance bidirectional TVS placed adjacent to USB connector to divert ESD current away from PHY IC. Use Value: Sub-12.0 V clamping voltage prevents latch-up in USB transceivers and avoids false disconnect detection during fast-rising ESD pulses. |
Use Scenario: Front-end protection of 5 V DC input rails in embedded gateways subjected to IEC 61000-4-5 surge tests. IC Role / Device Role / Timing Role: Primary surge suppression device placed after fuse and before bulk capacitor to absorb line-to-ground energy. Use Value: Handles 600 W peak pulse energy without degradation, reducing need for secondary MOV-based protection stages and simplifying BOM. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ7.0CAHE3_B/I | Same electrical specs; RoHS-compliant but not halogen-free; lacks AEC-Q101 qualification. | Suitable for commercial/industrial use only; not approved for automotive production. | Select when halogen-free requirement or automotive qualification is not mandated. |
| SMAJ7.0CAHM3_A/I | Lower PPPM (400 W); same VWM/VBR/VC; SMA package (smaller footprint, lower thermal mass). | Limited to lower-energy transients; less robust under repeated surge stress. | Choose only for cost-sensitive, low-risk consumer applications with verified lower surge exposure. |
Compared with SMBJ7.0CAHM3_B/I, the HE3 variant trades halogen-free and automotive qualification for lower cost in non-automotive settings, while the SMAJ7.0CAHM3_A/I reduces surge capacity and thermal resilience - making SMBJ7.0CAHM3_B/I the optimal choice for mission-critical automotive and industrial deployments.
Availability
SMBJ7.0CAHM3_B/I is available at Aetrix Electronics and suitable for automotive sensor protection, industrial communication interface hardening, and consumer USB port ESD mitigation requiring stable component supply across multi-year production cycles.
Supply support for SMBJ7.0CAHM3_B/I 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 performance.
The SMBJ series delivers high-power transient suppression in compact surface-mount packages, engineered specifically for automotive, industrial, and communications systems demanding AEC-Q101 compliance and robust surge immunity.
FAQ
What is the clamping voltage of SMBJ7.0CAHM3_B/I at its rated peak pulse current?
The SMBJ7.0CAHM3_B/I clamps to a maximum of 12.0 V when subjected to its rated peak pulse current of 50.0 A under the standard 10/1000 µs waveform. This value is measured across both terminals during bidirectional conduction and ensures downstream components remain within safe operating voltage limits during surge events.
Is SMBJ7.0CAHM3_B/I suitable for automotive applications?
Yes, SMBJ7.0CAHM3_B/I is AEC-Q101 qualified and carries the HM3 suffix indicating halogen-free, RoHS-compliant construction validated for automotive use. It meets temperature, humidity, vibration, and surge immunity requirements for engine control, body electronics, and ADAS sensor modules.
How does the bidirectional nature of SMBJ7.0CAHM3_B/I affect PCB layout?
The bidirectional design of SMBJ7.0CAHM3_B/I eliminates polarity marking - both terminals are functionally identical. This allows unrestricted orientation during automated placement and simplifies routing on differential or floating signal lines such as CAN, RS-485, or audio inputs without concern for anode/cathode alignment.
What is the maximum junction temperature rating for SMBJ7.0CAHM3_B/I?
The SMBJ7.0CAHM3_B/I has a maximum junction temperature (TJ max.) of +150 °C, enabling reliable operation in high-ambient environments like under-hood automotive locations or enclosed industrial enclosures. Thermal derating follows the curve in Figure 2 of the datasheet, with full power rated at TA ≤ 25 °C.
Does SMBJ7.0CAHM3_B/I meet any industry surge immunity standards?
Yes, SMBJ7.0CAHM3_B/I supports compliance with IEC 61000-4-5 (Level 4, 4 kV line-earth), ISO 7637-2 (Pulse 1, 2a, 3a), and ISO 16750-2 (supply voltage transients) when applied per recommended PCB layout and thermal conditions. Its 600 W PPPM rating aligns with these test profiles.
SMBJ7.0CAHM3_B/I 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):
- 7V
- Voltage - Breakdown (Min):
- 7.78V
- Voltage - Clamping (Max) @ Ipp:
- 12V
- Current - Peak Pulse (10/1000µs):
- 50A
- 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)
SMBJ7.0CAHM3_B/I FAQ
1.How can I place an order for SMBJ7.0CAHM3_B/I through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ7.0CAHM3_B/I 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 SMBJ7.0CAHM3_B/I reliable?
The price and inventory of SMBJ7.0CAHM3_B/I are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBJ7.0CAHM3_B/I is usually 5 days.
3.What payment methods are accepted for SMBJ7.0CAHM3_B/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ7.0CAHM3_B/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ7.0CAHM3_B/I?
SMBJ7.0CAHM3_B/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ7.0CAHM3_B/I 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 SMBJ7.0CAHM3_B/I?
For technical support, including SMBJ7.0CAHM3_B/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ7.0CAHM3_B/I requirements.
6.How does Aetrix verify that SMBJ7.0CAHM3_B/I is sourced from the original manufacturer or authorized distributors?
All SMBJ7.0CAHM3_B/I 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 SMBJ7.0CAHM3_B/I meets industry standards.
7.What is the process for return or replacement of SMBJ7.0CAHM3_B/I?
All SMBJ7.0CAHM3_B/I units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ7.0CAHM3_B/I, 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 SMBJ7.0CAHM3_B/I part is unused and in its original packaging.
Return procedure for SMBJ7.0CAHM3_B/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBJ7.0CAHM3_B/I Tags
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Diodes Incorporated
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