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Vishay General Semiconductor - Diodes Division SMBJ7.0CAHM3/H
- Part No.:
- SMBJ7.0CAHM3/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ7.0CAHM3/H.pdf
- Description:
- TVS DIODE 7VWM 12VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:2,751
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Product details
Overview
SMBJ7.0CAHM3/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 600 W peak pulse power (10/1000 µs), 7.0 V stand-off voltage (VWM), and clamps to ≤12.0 V at 50.0 A peak pulse current (IPPM). Used for ESD and surge protection in sensor interfaces and industrial I/O circuits.
For engineers reviewing the SMBJ7.0CAHM3/H datasheet, SMBJ7.0CAHM3/H pinout, SMBJ7.0CAHM3/H application, or SMBJ7.0CAHM3/H equivalent, this page delivers verified electrical specs, bidirectional clamping behavior, thermal resistance (RθJA = 100 °C/W), AEC-Q101 qualification status, and real-world design implications for transient suppression in automotive and industrial environments.
Technical Context
This device operates as a bidirectional avalanche diode with symmetrical breakdown characteristics-minimum VBR = 6.40 V and maximum VBR = 7.07 V at 10 mA test current. Its low clamping voltage (VC = 12.0 V @ IPPM = 50.0 A) ensures robust protection of downstream ICs without overvoltage stress.
It exhibits a temperature coefficient of VBR of +0.065 %/°C and meets MSL Level 1 per J-STD-020 with 260 °C lead-free reflow compatibility. The halogen-free, RoHS-compliant HM3 suffix confirms compliance with automotive-grade material requirements and whisker resistance per JESD 201 Class 2.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 7.0 V - Maximum continuous reverse operating voltage before leakage exceeds 1.0 µA; sets safe operating margin below clamping threshold. |
| VBR (min/max) | 6.40 V / 7.07 V @ 10 mA - Confirmed bidirectional breakdown range; ensures consistent turn-on across polarity during transients. |
| VC @ IPPM | 12.0 V @ 50.0 A - Clamped voltage under 600 W 10/1000 µs surge; defines worst-case stress on protected circuitry. |
| PPPM | 600 W - Peak pulse power handling capability; supports high-energy lightning-induced surges per IEC 61000-4-5. |
| RθJA | 100 °C/W - Junction-to-ambient thermal resistance on standard 0.2" × 0.2" copper pads; informs derating above 25 °C ambient. |
| TJ max. | +150 °C - Maximum junction temperature; enables operation in under-hood automotive and industrial control enclosures. |
| AEC-Q101 | Qualified - Validated for automotive electronics per stress test requirements; supports use in ADAS sensor modules and body control units. |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, bidirectional configuration with no polarity marking. Dimensions: 4.57 mm × 3.94 mm × 2.20 mm (L × W × H); matte tin-plated terminals, solderable per J-STD-002.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (Anode side) | Transient conduction path (bidirectional) | No functional polarity-both terminals serve identically as clamping nodes; symmetric I-V curve eliminates orientation dependency. |
| Anode (Cathode side) | Transient conduction path (bidirectional) | Enables placement across differential lines (e.g., RS-485, CAN) without directional constraints; simplifies layout and BOM management. |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power (10/1000 µs) | Supports IEC 61000-4-5 Level 4 surge immunity (4 kV line-to-ground) without degradation in standard PCB layouts. |
| Bidirectional clamping | Protects AC-coupled or differential interfaces (e.g., USB D+/D−, Ethernet PHY) without requiring dual unidirectional devices. |
| Halogen-free, RoHS-compliant HM3 suffix | Meets automotive material compliance standards (e.g., GMW3172, Ford WSS-M99P9999-A1) and supports lead-free assembly. |
| AEC-Q101 qualified | Validated for automotive applications including engine control, infotainment, and ADAS sensors-no additional qualification required. |
| Low incremental surge resistance | Minimizes voltage overshoot during fast-rising transients (<1 ns rise time), critical for protecting high-speed logic and ADC inputs. |
Applications
| Automotive Sensor Protection | Industrial I/O Interface |
|---|---|
|
Use Scenario: Protecting analog output lines of pressure or temperature sensors in engine control modules exposed to load dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Bidirectional TVS clamp placed directly at connector entry point to shunt transients before reaching precision amplifier or ADC input. Use Value: Limits induced voltage to ≤12.0 V during 50 A surge events, preserving sensor signal integrity and preventing latch-up in downstream ASICs. |
Use Scenario: Shielding 24 V digital input channels on PLC modules against field-wiring induced surges and relay coil flyback. IC Role / Device Role / Timing Role: Standoff-rated TVS (VWM = 7.0 V) used in conjunction with series current-limiting resistor to protect optocoupler input stage. Use Value: Enables reliable operation under repetitive 10/1000 µs surges up to 600 W without parameter drift-validated per AEC-Q101 temperature cycling. |
| Consumer Device USB Port | Telecom Line Interface |
|
Use Scenario: ESD and surge protection on USB 2.0 data lines (D+/D−) in smart home hubs subjected to human-body-model (HBM) discharges. IC Role / Device Role / Timing Role: Low-capacitance bidirectional TVS placed adjacent to USB connector to suppress ±8 kV contact discharge per IEC 61000-4-2. Use Value: Clamps transients within 1 ns while maintaining signal integrity-junction capacitance < 100 pF at zero bias ensures minimal data eye distortion. |
Use Scenario: Protecting FXS/FXO line interface circuits in VoIP gateways from lightning-induced surges on telephone lines. IC Role / Device Role / Timing Role: Primary-level TVS mounted at line entry, coordinated with gas discharge tube (GDT) for staged protection architecture. Use Value: Withstands repeated 600 W surges while maintaining VC ≤ 12.0 V-enabling compliance with GR-1089-CORE and ITU-T K.20/21 standards. |
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/H | RoHS-compliant but not halogen-free; same electrical specs and AEC-Q101 qualification; differs only in material composition (Br/Cl content). | Approved for commercial and industrial use where halogen-free requirement is not mandated (e.g., non-automotive consumer products). | Select when cost sensitivity outweighs halogen-free mandate; identical footprint and performance in non-automotive designs. |
| SMAJ7.0CAHM3 | Lower peak pulse power (400 W vs. 600 W); same VWM, VBR, and VC; SMA (DO-214AC) package with smaller pad area and higher RθJA (140 °C/W). | Suitable for space-constrained consumer electronics with lower surge threat levels (e.g., IEC 61000-4-5 Level 2). | Choose only if board space is critical and surge energy is limited; requires thermal derating above 25 °C due to higher thermal resistance. |
Compared with SMBJ7.0CAHM3/H, the HE3 variant offers identical protection performance without halogen-free assurance, while the SMAJ7.0CAHM3 trades 33 % lower surge capacity and reduced thermal margin for smaller footprint-making SMBJ7.0CAHM3/H optimal for automotive and industrial applications demanding full 600 W rating and AEC-Q101 traceability.
Availability
SMBJ7.0CAHM3/H is available at Aetrix Electronics and suitable for automotive sensor modules, industrial PLC I/O protection, and telecom line interface designs requiring stable component supply, long-term lifecycle support, and AEC-Q101 traceability.
Supply support for SMBJ7.0CAHM3/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, MOSFETs, and TVS devices with emphasis on reliability, power efficiency, and automotive-grade qualification.
The SMBJ series is engineered for high-energy transient suppression in harsh environments-targeting automotive, industrial, and telecom applications where robustness, consistency, and regulatory compliance are mandatory.
FAQ
What is the clamping voltage of SMBJ7.0CAHM3/H at its rated peak pulse current?
The SMBJ7.0CAHM3/H clamps to a maximum of 12.0 V at its specified peak pulse current of 50.0 A (10/1000 µs waveform). This value is measured and guaranteed per Vishay's datasheet (Document Number: 88392, Rev. 09-Jan-2024), and defines the upper voltage limit imposed on protected circuitry during surge events. The SMBJ7.0CAHM3/H maintains this clamping performance across its operational junction temperature range of –55 °C to +150 °C.
Is SMBJ7.0CAHM3/H suitable for automotive applications?
Yes, SMBJ7.0CAHM3/H is AEC-Q101 qualified and carries the HM3 suffix indicating halogen-free, RoHS-compliant construction validated for automotive use. It meets stress test requirements for temperature cycling, humidity, and mechanical shock, and is explicitly approved for engine control, body electronics, and ADAS sensor protection. The SMBJ7.0CAHM3/H datasheet confirms qualification status in the Ordering Information section (page 3).
How does the bidirectional nature of SMBJ7.0CAHM3/H affect its placement on a PCB?
The SMBJ7.0CAHM3/H has no polarity marking and functions identically in both directions, allowing placement across any two points needing symmetrical transient suppression-such as differential signal pairs (RS-485, CAN, USB) or AC power rails. Unlike unidirectional TVS diodes, the SMBJ7.0CAHM3/H eliminates orientation errors during automated assembly and avoids the need for duplicate components in balanced topologies.
What is the thermal resistance of SMBJ7.0CAHM3/H, and how does it impact layout?
The SMBJ7.0CAHM3/H has a typical junction-to-ambient thermal resistance (RθJA) of 100 °C/W when mounted on 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal. This value assumes standard FR-4 PCB construction and dictates minimum copper area requirements for sustained surge duty cycles. For applications exceeding 0.01 % duty cycle or ambient temperatures >25 °C, thermal derating per Figure 2 in the SMBJ7.0CAHM3/H datasheet must be applied to maintain reliability.
Does SMBJ7.0CAHM3/H meet industry surge immunity standards such as IEC 61000-4-5?
Yes, the SMBJ7.0CAHM3/H is rated for 600 W peak pulse power with a 10/1000 µs waveform-directly supporting compliance with IEC 61000-4-5 Level 4 (4 kV line-to-ground, 2 kV line-to-line) when implemented with appropriate PCB layout and coordination with upstream filtering. Its low clamping voltage (12.0 V) and fast response ensure protected ICs remain within safe operating limits during standardized surge testing.
SMBJ7.0CAHM3/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:
- Discontinued at Digi-Key
- 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/H FAQ
1.How can I place an order for SMBJ7.0CAHM3/H through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ7.0CAHM3/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/H reliable?
The price and inventory of SMBJ7.0CAHM3/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/H is usually 5 days.
3.What payment methods are accepted for SMBJ7.0CAHM3/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ7.0CAHM3/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ7.0CAHM3/H?
SMBJ7.0CAHM3/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ7.0CAHM3/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/H?
For technical support, including SMBJ7.0CAHM3/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ7.0CAHM3/H requirements.
6.How does Aetrix verify that SMBJ7.0CAHM3/H is sourced from the original manufacturer or authorized distributors?
All SMBJ7.0CAHM3/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/H meets industry standards.
7.What is the process for return or replacement of SMBJ7.0CAHM3/H?
All SMBJ7.0CAHM3/H units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ7.0CAHM3/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/H part is unused and in its original packaging.
Return procedure for SMBJ7.0CAHM3/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBJ7.0CAHM3/H Tags
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