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Vishay General Semiconductor - Diodes Division SMBJ7.5D-M3/H
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- Part No.:
- SMBJ7.5D-M3/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ7.5D-M3/H.pdf
- Description:
- TVS DIODE 7.5VWM 12.7VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:185
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Product details
Overview
SMBJ7.5D-M3/H from Vishay General Semiconductor is a unidirectional surface-mount transient voltage suppressor (TVS) diode in SMB (DO-214AA) package, designed for clamping voltage transients on power and signal lines. It features a 7.5 V stand-off voltage (VWM), 8.46–9.08 V breakdown voltage (VBR) at 1.0 mA test current, 12.7 V maximum clamping voltage (VC) at 47.2 A peak pulse current (IPPM), and 600 W peak pulse power (10/1000 μs waveform). It is used to protect MOSFETs, ICs, and sensor signal lines in industrial power supplies and telecom interfaces.
For engineers reviewing the SMBJ7.5D-M3/H datasheet, SMBJ7.5D-M3/H pinout, SMBJ7.5D-M3/H application, or SMBJ7.5D-M3/H equivalent, key selection criteria include verified clamping performance under 10/1000 μs surge, unidirectional polarity with cathode band marking, thermal resistance (RθJA = 125 °C/W on minimum pad), RoHS-compliant halogen-free M3 construction, and UL 497B recognition for telecom surge protection.
Technical Context
This TVS diode operates as a voltage-clamping device triggered by reverse-biased avalanche breakdown. Its 7.5 V stand-off voltage ensures compatibility with 5 V and 3.3 V logic supply rails while maintaining low leakage (<75 μA at VWM). The 12.7 V clamping voltage limits downstream voltage stress during 47.2 A transient events.
It is rated for 600 W peak pulse power per 10/1000 μs waveform at TA = 25 °C, with derating above 25 °C per Fig. 2. Junction temperature range spans −55 °C to +150 °C, and it meets J-STD-020 MSL Level 1 with 260 °C reflow peak.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 7.5 V - Maximum continuous reverse operating voltage before significant leakage; compatible with 5 V system rails. |
| VBR min/max | 8.46 V / 9.08 V at IT = 1.0 mA - Tight ±3.5 % tolerance ensures predictable turn-on across production lots. |
| VC @ IPPM | 12.7 V at 47.2 A - Clamped voltage seen by protected circuit during worst-case 10/1000 μs surge. |
| PPPM | 600 W - Peak transient energy absorption capability under standardized lightning/surge waveform. |
| ID @ VWM | <75 μA - Low leakage preserves signal integrity and minimizes standby power loss in battery-powered systems. |
| Package | SMB (DO-214AA) - Surface-mount footprint with 5.59 mm × 4.06 mm outline; supports automated placement and J-STD-002 solderability. |
| TJ max | +150 °C - Enables operation in high-temperature industrial environments without derating. |
Pinout & Package
Package: SMB (DO-214AA), molded plastic case meeting UL 94 V-0 flammability rating; matte tin-plated leads, M3 suffix indicating halogen-free, RoHS-compliant, industrial-grade construction with JESD 201 Class 2 whisker resistance. Polarity: cathode denoted by band at one end.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal | Connected to lower-potential side (e.g., ground or return path) in unidirectional configuration. |
| Cathode (banded end) | Avalanche clamping terminal | Connected to protected line (e.g., VCC or signal); conducts when reverse voltage exceeds VBR. |
Key Features
| Feature | Design Value |
|---|---|
| ±3.5 % VBR tolerance | Ensures consistent clamping threshold across manufacturing batches, reducing design margin uncertainty. |
| 600 W peak pulse power (10/1000 μs) | Withstands IEC 61000-4-5 Level 4 surges (4 kV line-to-earth) without degradation when properly mounted. |
| Low incremental surge resistance | Minimizes voltage overshoot during fast-rising transients, improving protection of sensitive CMOS inputs. |
| MSL Level 1, 260 °C peak reflow | Supports single-pass lead-free assembly without moisture-related popcorning or delamination. |
| UL 497B recognized (QVGQ2, E136766) | Validated for use in telecom interface protection circuits requiring safety agency certification. |
Applications
| Industrial Power Supply Protection | Automotive Body Control Module (BCM) Inputs |
|---|---|
|
Use Scenario: Protecting 12 V DC input rails of PLC power modules against load dump and inductive switching transients. IC Role / Device Role: Unidirectional TVS placed between input rail and chassis ground to clamp surges up to 600 W. Use Value: Limits voltage excursion to ≤12.7 V during 47.2 A transients, preventing damage to upstream DC/DC controllers and downstream LDOs. |
Use Scenario: Safeguarding LIN bus input pins of BCM microcontrollers against ESD and battery disconnect spikes. IC Role / Device Role: Standoff-rated TVS on LIN signal line referenced to battery ground, leveraging 7.5 V VWM for compatibility with 12 V nominal systems. Use Value: Clamps fast transients within nanoseconds while maintaining <75 μA leakage at 12 V, preserving bus signal integrity. |
| Telecom Interface Surge Protection | Consumer Sensor Signal Line Protection |
|
Use Scenario: Protecting RS-485 transceiver I/O pins in base station remote units exposed to lightning-induced surges. IC Role / Device Role: Primary clamping device on differential pair, coordinated with common-mode chokes and secondary TVS arrays. Use Value: UL 497B recognition and 600 W rating enable compliance with GR-1089-CORE telecom surge immunity requirements. |
Use Scenario: Shielding analog output lines of MEMS pressure sensors in smart home HVAC controllers from ESD events. IC Role / Device Role: Low-capacitance unidirectional TVS placed at sensor PCB edge, grounded to minimize loop area. Use Value: 12.7 V clamping prevents latch-up in 3.3 V ADC front-ends while 75 μA leakage avoids offset drift in precision amplifiers. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ7.5A-M3/H | Bidirectional variant; symmetric VBR (8.46–9.08 V) in both polarities; no cathode band marking. | Required where AC-coupled or dual-polarity signal lines (e.g., USB D+/D−, CAN H/L) need protection without polarity biasing. | Select SMBJ7.5A-M3/H only if bidirectional clamping is required; SMBJ7.5D-M3/H is preferred for DC rails with defined ground reference. |
| SMAJ7.5A-E3/5A | Lower PPPM (400 W), SMA package (smaller footprint, higher RθJA ≈ 150 °C/W), same VWM/VBR range. | Suitable for space-constrained consumer PCBs where 400 W surge margin suffices and thermal mass is limited. | Choose SMAJ7.5A-E3/5A only when board area is critical and peak surge energy is below 400 W; SMBJ7.5D-M3/H provides 50 % higher power headroom. |
Compared with SMBJ7.5A-M3/H and SMAJ7.5A-E3/5A, SMBJ7.5D-M3/H delivers superior unidirectional surge handling (600 W), lower thermal resistance (125 °C/W vs. ≥150 °C/W), and tighter process control for industrial reliability-making it optimal for high-energy DC rail protection where polarity is fixed and power robustness is prioritized.
Availability
SMBJ7.5D-M3/H is available at Aetrix Electronics and suitable for industrial power supplies, telecom interface protection, and automotive body control modules requiring stable component supply and long-term lifecycle support.
Supply support for SMBJ7.5D-M3/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 protection devices with emphasis on reliability, precision, and application-specific optimization.
The SMBJ series is engineered for high-energy transient suppression in harsh environments, targeting industrial automation, telecom infrastructure, and automotive electronics where repeatable clamping performance and safety certification are mandatory.
FAQ
What is the clamping voltage of SMBJ7.5D-M3/H at its rated peak pulse current?
The SMBJ7.5D-M3/H has a maximum clamping voltage (VC) of 12.7 V when subjected to its rated peak pulse current (IPPM) of 47.2 A under the standard 10/1000 μs waveform. This value is measured per ANSI/IEEE C62.35 and confirmed in the Vishay datasheet revision 09-Jan-2024, ensuring predictable overvoltage limiting for downstream components in the SMBJ7.5D-M3/H protected circuit.
Is SMBJ7.5D-M3/H RoHS-compliant and halogen-free?
Yes, SMBJ7.5D-M3/H carries the "M3" suffix, which explicitly denotes halogen-free molding compound, RoHS compliance per Directive 2011/65/EU, and industrial-grade qualification. It also passes JESD 201 Class 2 whisker testing and meets UL 94 V-0 flammability requirements-verified in the official Vishay documentation for SMBJ5.0D–SMBJ188D series.
Does SMBJ7.5D-M3/H have UL recognition for telecom applications?
Yes, SMBJ7.5D-M3/H is UL recognized under file number E136766 for both unidirectional and bidirectional variants, complying with UL 497B for primary protector classification in telecommunications equipment. This certification applies directly to the SMBJ7.5D-M3/H part number as stated in the Vishay datasheet Document Number 87606.
What is the thermal resistance junction-to-ambient for SMBJ7.5D-M3/H?
The typical thermal resistance junction-to-ambient (RθJA) for SMBJ7.5D-M3/H is 125 °C/W when mounted on the minimum recommended pad layout, as specified in the Vishay datasheet. This value assumes standard FR-4 PCB with defined copper area per Figure 4; actual thermal performance depends on board layout and airflow, and must be validated per application for SMBJ7.5D-M3/H reliability.
How does the VBR tolerance of SMBJ7.5D-M3/H impact circuit design margins?
SMBJ7.5D-M3/H guarantees a ±3.5 % breakdown voltage tolerance (8.46–9.08 V at 1.0 mA), enabling tighter design margins than standard ±5 % TVS diodes. This allows engineers to set lower overvoltage thresholds without risking premature conduction, improving protection fidelity in 5 V and 3.3 V systems where SMBJ7.5D-M3/H is commonly deployed.
SMBJ7.5D-M3/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:
- Active
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 7.5V
- Voltage - Breakdown (Min):
- 8.46V
- Voltage - Clamping (Max) @ Ipp:
- 12.7V
- Current - Peak Pulse (10/1000µs):
- 47.2A
- 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)
SMBJ7.5D-M3/H FAQ
1.How can I place an order for SMBJ7.5D-M3/H through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ7.5D-M3/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 SMBJ7.5D-M3/H reliable?
The price and inventory of SMBJ7.5D-M3/H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBJ7.5D-M3/H is usually 5 days.
3.What payment methods are accepted for SMBJ7.5D-M3/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ7.5D-M3/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ7.5D-M3/H?
SMBJ7.5D-M3/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ7.5D-M3/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 SMBJ7.5D-M3/H?
For technical support, including SMBJ7.5D-M3/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ7.5D-M3/H requirements.
6.How does Aetrix verify that SMBJ7.5D-M3/H is sourced from the original manufacturer or authorized distributors?
All SMBJ7.5D-M3/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 SMBJ7.5D-M3/H meets industry standards.
7.What is the process for return or replacement of SMBJ7.5D-M3/H?
All SMBJ7.5D-M3/H units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ7.5D-M3/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 SMBJ7.5D-M3/H part is unused and in its original packaging.
Return procedure for SMBJ7.5D-M3/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBJ7.5D-M3/H Tags
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