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Vishay General Semiconductor - Diodes Division SMBJ7.0CAHM3_A/H
- Part No.:
- SMBJ7.0CAHM3_A/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ7.0CAHM3_A/H.pdf
- Description:
- TVS DIODE 7VWM 12VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:2,608
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Product details
Overview
SMBJ7.0CAHM3_A/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 7.0 V stand-off voltage (VWM), 600 W peak pulse power (10/1000 µs), 12.0 V maximum clamping voltage at 50.0 A peak pulse current, and operates across -55 °C to +150 °C junction temperature - used in automotive sensor protection and industrial I/O interface surge suppression.
For engineers reviewing the SMBJ7.0CAHM3_A/H datasheet, SMBJ7.0CAHM3_A/H pinout, SMBJ7.0CAHM3_A/H application, or SMBJ7.0CAHM3_A/H equivalent, key selection criteria include bidirectional clamping capability, 12.0 V VC at IPPM, AEC-Q101 qualification status, halogen-free RoHS compliance, and SMB package thermal performance under repetitive surge conditions.
Technical Context
This device functions as a voltage-clamping protector with symmetrical breakdown behavior in both polarities due to its bidirectional construction. Its 7.0 V stand-off voltage ensures compatibility with 5 V logic and low-voltage analog interfaces, while the 12.0 V clamping voltage limits downstream stress during 10/1000 µs transients up to 50 A.
The SMBJ7.0CAHM3_A/H uses a glass-passivated silicon junction and meets MSL Level 1 per J-STD-020 with 260 °C reflow peak. Its 100 °C/W junction-to-ambient thermal resistance and 20 °C/W junction-to-lead resistance support reliable operation on standard PCB copper pads without heatsinking.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 7.0 V - Maximum continuous reverse operating voltage before clamping begins; sets minimum system voltage margin for 5 V rail protection. |
| VBR min / max | 7.78 V / 8.60 V at 10 mA - Confirmed breakdown range ensures predictable turn-on during overvoltage events. |
| VC @ IPPM | 12.0 V at 50.0 A - Clamping voltage under standardized 10/1000 µs surge; defines worst-case voltage seen by protected IC. |
| PPPM | 600 W - Peak pulse power handling per 10/1000 µs waveform; supports IEC 61000-4-5 Level 3/4 surge immunity. |
| ID @ VWM | 800 µA - Reverse leakage at stand-off voltage; low enough to avoid loading 5 V sensor bias networks. |
| TJ max | +150 °C - Maximum junction temperature; enables use in under-hood automotive and high-ambient industrial environments. |
| Package | SMB (DO-214AA) - Surface-mount outline with 5.59 mm × 4.06 mm footprint and 2.20 mm height; compatible with automated placement and reflow. |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, bidirectional configuration with no polarity marking. Terminals are matte tin-plated leads, solderable per J-STD-002 and JESD 22-B102.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry terminal in forward conduction direction | One side of symmetrical junction; forms clamping path during negative transients when referenced to ground. |
| Cathode | Current exit terminal in forward conduction direction | Other side of symmetrical junction; forms clamping path during positive transients when referenced to ground. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC-coupled or floating signal lines without polarity concerns. |
| 600 W peak pulse power (10/1000 µs) | Meets IEC 61000-4-5 surge test requirements for industrial and automotive electronics. |
| AEC-Q101 qualified | Validated for automotive applications including engine control modules and body electronics. |
| Halogen-free & RoHS-compliant (HM3 suffix) | Complies with environmental regulations and supports lead-free reflow assembly processes. |
| MSL Level 1 moisture sensitivity | Allows unlimited floor life and standard reflow without baking preconditioning. |
Applications
| Automotive Sensor Protection | Industrial I/O Interface |
|---|---|
|
Use Scenario: Protecting CAN/LIN bus transceivers and analog sensor outputs (e.g., pressure, temperature) from load dump and ESD in vehicle ECUs. IC Role / Device Role / Timing Role: Voltage clamping element placed between signal line and ground, responding within <1 ps to limit transient amplitude. Use Value: Prevents latch-up or gate oxide damage in 5 V tolerant transceivers by holding line voltage ≤12.0 V during 50 A surges. |
Use Scenario: Shielding PLC digital input modules and RS-485 transceivers from induced lightning surges on field wiring. IC Role / Device Role / Timing Role: Bidirectional shunt protector mounted at connector entry point, diverting energy before reaching isolation barrier. Use Value: Maintains functional safety integrity by limiting transient voltage to below 12.0 V, preserving signal integrity across 10/1000 µs events. |
| Consumer Power Adapter Input | Telecom Line Card Surge Suppression |
|
Use Scenario: Safeguarding AC-DC converter primary-side control ICs and optocouplers against mains-borne surges in wall adapters. IC Role / Device Role / Timing Role: Standoff-rated TVS placed across bridge rectifier output or bulk capacitor input. Use Value: Absorbs 600 W pulses without degradation, enabling compact design with no external heat sinking required. |
Use Scenario: Protecting Ethernet PHYs and DSL line drivers from longitudinal surges entering via RJ-45 jacks in base station equipment. IC Role / Device Role / Timing Role: Symmetrical clamp on differential pair, referenced to chassis ground through low-inductance layout. Use Value: Ensures continuity of service by surviving repeated 10/1000 µs surges up to 50 A while maintaining <800 µA leakage at 7.0 V. |
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_A/H | RoHS-compliant but not halogen-free; same electrical specs and AEC-Q101 qualification. | Preferred where halogen content is unrestricted but automotive qualification is mandatory. | Select when cost optimization is prioritized over halogen-free material requirements. |
| SMBJ7.0CA-E3/52 | Commercial-grade (non-AEC-Q101), same SMB package and 7.0 V VWM, but lower reliability screening. | Suitable for consumer or industrial non-automotive applications with less stringent qualification needs. | Choose for cost-sensitive designs where automotive qualification is unnecessary. |
Compared with SMBJ7.0CAHM3_A/H, the HE3 variant offers identical surge performance with reduced environmental compliance, while the E3/52 version sacrifices automotive qualification for lower unit cost - enabling tiered sourcing based on end-equipment requirements.
Availability
SMBJ7.0CAHM3_A/H is available at Aetrix Electronics and suitable for automotive sensor modules, industrial PLC I/O cards, and telecom line interface designs requiring stable component supply with full AEC-Q101 traceability and halogen-free compliance.
Supply support for SMBJ7.0CAHM3_A/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, MOSFETs, optoelectronics, and passive components with emphasis on reliability and application-specific performance.
The SMBJ series is part of Vishay's TRANSZORB® TVS portfolio, engineered for robust transient suppression in automotive, industrial, and communications systems where fast response and repeatable clamping are critical.
FAQ
What is the clamping voltage of SMBJ7.0CAHM3_A/H at its rated peak pulse current?
The SMBJ7.0CAHM3_A/H has a maximum clamping voltage (VC) of 12.0 V at 50.0 A peak pulse current (IPPM) under the standardized 10/1000 µs waveform. This value is measured per ANSI/IEEE C62.35 and defines the upper voltage limit imposed on protected circuitry during surge events - critical for ensuring downstream ICs remain within absolute maximum ratings.
Is SMBJ7.0CAHM3_A/H qualified for automotive applications?
Yes, SMBJ7.0CAHM3_A/H is AEC-Q101 qualified, as confirmed by Vishay's ordering code suffix "HM3" and documentation in datasheet 88392. This qualification covers stress testing for temperature cycling, humidity, mechanical shock, and surge endurance - making SMBJ7.0CAHM3_A/H suitable for under-hood and chassis-mounted automotive electronics where reliability under harsh conditions is mandatory.
What does the "CA" suffix indicate in SMBJ7.0CAHM3_A/H?
The "CA" suffix in SMBJ7.0CAHM3_A/H denotes a bidirectional configuration, meaning the device provides symmetrical transient suppression for both positive and negative voltage excursions. Unlike unidirectional variants (e.g., SMBJ7.0AHM3_A/H), the CA version has no cathode band marking and delivers identical VBR, VC, and IPPM characteristics in either polarity - ideal for protecting AC signals, differential buses, or floating nodes.
What is the thermal resistance profile of SMBJ7.0CAHM3_A/H?
SMBJ7.0CAHM3_A/H exhibits a typical junction-to-ambient thermal resistance (RθJA) of 100 °C/W and junction-to-lead resistance (RθJL) of 20 °C/W, measured on 0.2" × 0.2" copper pads per JEDEC standards. These values enable effective self-heating management during repetitive surge events and support operation up to +150 °C junction temperature without derating on standard PCB layouts.
How does the HM3 suffix differ from other Vishay packaging codes?
The "HM3" suffix in SMBJ7.0CAHM3_A/H indicates halogen-free, RoHS-compliant construction with AEC-Q101 qualification - distinguishing it from "HE3" (RoHS-compliant + AEC-Q101, but not halogen-free) and "E3" (RoHS-compliant commercial grade only). All three share the same SMB package and electrical specs, but HM3 meets stricter environmental and automotive reliability mandates.
SMBJ7.0CAHM3_A/H Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AA, SMB
- Series:
- TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- 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_A/H FAQ
1.How can I place an order for SMBJ7.0CAHM3_A/H through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ7.0CAHM3_A/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 SMBJ7.0CAHM3_A/H reliable?
The price and inventory of SMBJ7.0CAHM3_A/H 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_A/H is usually 5 days.
3.What payment methods are accepted for SMBJ7.0CAHM3_A/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ7.0CAHM3_A/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ7.0CAHM3_A/H?
SMBJ7.0CAHM3_A/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ7.0CAHM3_A/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 SMBJ7.0CAHM3_A/H?
For technical support, including SMBJ7.0CAHM3_A/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ7.0CAHM3_A/H requirements.
6.How does Aetrix verify that SMBJ7.0CAHM3_A/H is sourced from the original manufacturer or authorized distributors?
All SMBJ7.0CAHM3_A/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 SMBJ7.0CAHM3_A/H meets industry standards.
7.What is the process for return or replacement of SMBJ7.0CAHM3_A/H?
All SMBJ7.0CAHM3_A/H units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ7.0CAHM3_A/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 SMBJ7.0CAHM3_A/H part is unused and in its original packaging.
Return procedure for SMBJ7.0CAHM3_A/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBJ7.0CAHM3_A/H Tags
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Diodes Incorporated
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Diodes Incorporated
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Diodes Incorporated
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Nexperia USA Inc.
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Toshiba Semiconductor and Storage
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Diodes Incorporated
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