My Inquiry
My Account
Vishay General Semiconductor - Diodes Division SMBJ7.5A-E3/5B
;;2.jpg)
- Part No.:
- SMBJ7.5A-E3/5B
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ7.5A-E3/5B.pdf
- Description:
- TVS DIODE 7.5VWM 12.9VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:4,046
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
SMBJ7.5A-E3/5B from Vishay General Semiconductor is a unidirectional surface-mount transient voltage suppressor (TVS) diode designed for primary overvoltage protection of DC power rails and signal lines. It features a 7.5 V stand-off voltage (VWM), 8.33–9.21 V breakdown voltage (VBR) at 1.0 mA, 12.9 V maximum clamping voltage (VC) at 46.5 A peak pulse current, and 600 W peak pulse power rating with a 10/1000 µs waveform - deployed in industrial sensor interfaces and automotive body control modules.
For engineers reviewing the SMBJ7.5A-E3/5B datasheet, SMBJ7.5A-E3/5B pinout, SMBJ7.5A-E3/5B application, or SMBJ7.5A-E3/5B equivalent, key selection criteria include clamping performance under 46.5 A surge, thermal resistance (RθJA = 100 °C/W), unidirectional polarity marking, RoHS-compliant matte tin plating, and compatibility with automated SMT placement on SMB (DO-214AA) footprint.
Technical Context
This TVS diode operates as a voltage-clamped shunt protector: when reverse voltage exceeds VWM = 7.5 V, it avalanches to limit transient energy by diverting surge current to ground. Its glass-passivated junction ensures stable breakdown characteristics and low leakage (<100 µA at VWM).
Designed for single-pulse transients (e.g., ISO 7637-2 pulse 1/2a/5a), it delivers 46.5 A peak pulse current (IPPM) with 12.9 V clamping, exhibits 0.067 %/°C temperature coefficient of VBR, and maintains operation across –55 °C to +150 °C junction temperature range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 7.5 V - Maximum continuous reverse operating voltage before clamping begins; sets threshold for protection activation. |
| VBR (min/max) | 8.33 V / 9.21 V at IT = 1.0 mA - Confirmed breakdown range defining reliable avalanche onset under standard test conditions. |
| VC @ IPPM | 12.9 V at 46.5 A - Clamping voltage during 10/1000 µs surge; determines maximum stress imposed on protected IC or MOSFET. |
| PPPM | 600 W - Peak pulse power handling capacity; defines survivability against standardized lightning/inductive-switching surges. |
| IFSM | 100 A - Non-repetitive forward surge current rating (8.3 ms half-sine); supports robustness during accidental polarity reversal events. |
| RθJA | 100 °C/W - Junction-to-ambient thermal resistance on standard 0.2" × 0.2" copper pads; informs derating above 25 °C ambient. |
| Package | SMB (DO-214AA) - Surface-mount outline with cathode band marking; compatible with IPC-7351B standard land pattern. |
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. Cathode identified by black band on body end.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Low-side connection point | Connected to system ground or return path; completes shunt path during transient conduction. |
| Cathode | High-side connection point | Connected to protected line (e.g., 5 V rail or CAN_H); carries full surge current into ground via anode. |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power | Enables protection against high-energy transients per IEC 61000-4-5 (Level 4) without external series impedance. |
| 12.9 V clamping at 46.5 A | Ensures downstream 3.3 V or 5 V logic ICs remain below absolute maximum ratings during surge events. |
| Glass-passivated junction | Provides stable VBR tolerance and low leakage (<100 µA) over temperature and lifetime. |
| MSL Level 1 rating | Supports lead-free reflow assembly without pre-baking; eliminates moisture-related popcorning risk. |
| RoHS-compliant, matte tin plating | Guarantees solderability per J-STD-002/JESD 22-B102 and whisker resistance per JESD 201 Class 2. |
Applications
| Automotive Body Control Module | Industrial Sensor Signal Line Protection |
|---|---|
|
Use Scenario: Protects microcontroller I/O pins and LIN bus transceivers from load-dump and inductive switching transients in door module ECUs. IC Role / Device Role / Timing Role: Unidirectional shunt clamp placed between LIN line and chassis ground, activated within <1 ns of overvoltage event. Use Value: Limits voltage to ≤12.9 V during 46.5 A surge, preventing latch-up or gate oxide damage in 5 V tolerant transceivers. |
Use Scenario: Shields analog output (4–20 mA) and digital I²C lines of pressure/temperature sensors in PLC field terminals. IC Role / Device Role / Timing Role: Standoff-rated TVS mounted directly at connector entry point to intercept ESD (IEC 61000-4-2 ±8 kV) and burst noise. Use Value: Sub-100 µA leakage at 7.5 V avoids loading precision current loops; fast response preserves signal integrity on 100 kHz sensor data streams. |
| DC Power Rail Protection (5 V/12 V) | Consumer USB Port Surge Suppression |
|
Use Scenario: Guards 5 V supply rail feeding FPGA configuration circuitry in embedded vision systems against hot-swap and back-EMF spikes. IC Role / Device Role / Timing Role: Primary overvoltage clamp parallel to bulk capacitor; conducts only during >7.5 V excursions. Use Value: 600 W rating absorbs 10/1000 µs pulses up to 46.5 A without degradation, maintaining rail stability during multi-event stress testing. |
Use Scenario: Integrated into USB 2.0 Type-A port PCB layout to meet USB-IF ESD compliance requirements for host controllers. IC Role / Device Role / Timing Role: Unidirectional TVS tied between VBUS and GND, with cathode to VBUS, blocking normal 5 V operation while clamping surges. Use Value: 12.9 V clamping prevents overvoltage on USB PHY's 5.5 V absolute max rating; DO-214AA footprint allows compact placement near connector. |
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-M3/5B | Halogen-free, RoHS-compliant variant with identical electrical specs and SMB package. | No functional difference; selected where halogen-free BOM compliance is mandated (e.g., EU medical devices). | Choose M3/5B when halogen-free certification is required; otherwise E3/5B offers standard commercial-grade compliance. |
| SAC7.5 | Lower 400 W PPPM, higher VC = 14.5 V at 29 A, same VWM = 7.5 V, but in smaller SOD-123 package. | Not suitable for 600 W surge environments; limited to lower-energy ESD-only or board-level secondary protection. | Select SAC7.5 only for space-constrained designs accepting reduced surge margin; SMBJ7.5A-E3/5B remains preferred for primary protection. |
Compared with SMBJ7.5A-M3/5B, the SMBJ7.5A-E3/5B offers identical protection performance with standard RoHS compliance, while SAC7.5 trades surge capability for footprint reduction - making SMBJ7.5A-E3/5B optimal for robust front-end DC rail and interface protection where 600 W clamping headroom is essential.
Availability
SMBJ7.5A-E3/5B is available at Aetrix Electronics and suitable for automotive body electronics, industrial sensor interfaces, DC power rail hardening, and consumer USB port protection requiring stable component supply and full traceability.
Supply support for SMBJ7.5A-E3/5B 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 and AEC-Q qualification.
The SMBJ series is engineered for high-energy transient suppression in harsh environments - targeting automotive, industrial, and telecom infrastructure where consistent clamping and long-term stability are critical.
FAQ
What is the clamping voltage of SMBJ7.5A-E3/5B at its rated peak pulse current?
The SMBJ7.5A-E3/5B has a maximum clamping voltage (VC) of 12.9 V when subjected to its rated peak pulse current of 46.5 A using the standard 10/1000 µs waveform. This value is measured under defined test conditions per ANSI/IEEE C62.35 and ensures protected circuits remain within safe voltage limits during surge events. The SMBJ7.5A-E3/5B achieves this clamping performance while maintaining low incremental surge resistance and fast sub-nanosecond response.
Is SMBJ7.5A-E3/5B suitable for automotive applications?
Yes, the SMBJ7.5A-E3/5B is qualified to AEC-Q101 when ordered with HE3 or HM3 suffixes; however, the E3/5B variant is commercial-grade and not AEC-Q101 certified. For non-automotive or non-safety-critical automotive subsystems (e.g., infotainment power rails), SMBJ7.5A-E3/5B provides robust transient protection. For qualified automotive use, specify SMBJ7.5AHE3_B/I or equivalent AEC-Q101 version - the SMBJ7.5A-E3/5B itself meets all electrical and mechanical specs except formal qualification.
What does the "E3/5B" suffix indicate in SMBJ7.5A-E3/5B?
The "E3" suffix denotes RoHS-compliant, commercial-grade construction with matte tin-plated leads meeting J-STD-002 solderability and JESD 201 Class 2 whisker resistance. The "5B" indicates packaging in 13-inch diameter plastic tape and reel, with a base quantity of 3200 units per reel. This format supports high-volume automated SMT placement and is distinct from the "52" code used for 7-inch reels (750 units). The SMBJ7.5A-E3/5B thus combines environmental compliance with production-ready logistics.
How does SMBJ7.5A-E3/5B differ from bidirectional variants like SMBJ7.5CA?
The SMBJ7.5A-E3/5B is unidirectional, with polarity marked by a cathode band and intended for DC line protection where reverse voltage is blocked. In contrast, SMBJ7.5CA is bidirectional, symmetrical in both directions, and used for AC or differential signal lines (e.g., RS-485). Electrical differences include higher ID leakage tolerance for low-VWM bidirectional types and absence of forward voltage (VF) spec in CA versions. The SMBJ7.5A-E3/5B supports 3.5 V max VF at 50 A forward current - a feature absent in bidirectional models.
Can SMBJ7.5A-E3/5B be used in place of SMAJ7.5A?
No - SMBJ7.5A-E3/5B and SMAJ7.5A are not interchangeable due to differing package footprints and thermal performance. The SMBJ uses DO-214AA (SMB) with RθJA = 100 °C/W, while SMAJ uses DO-214AC (SMA) with RθJA = 130 °C/W and lower 400 W PPPM. Although both share 7.5 V VWM, the SMBJ7.5A-E3/5B delivers higher surge current (46.5 A vs. 29 A) and tighter VBR tolerance. PCB layout, thermal design, and surge margin must be revalidated if substituting; SMBJ7.5A-E3/5B is not a drop-in replacement for SMAJ7.5A.
SMBJ7.5A-E3/5B 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):
- 8.33V
- Voltage - Clamping (Max) @ Ipp:
- 12.9V
- Current - Peak Pulse (10/1000µs):
- 46.5A
- 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)
SMBJ7.5A-E3/5B FAQ
1.How can I place an order for SMBJ7.5A-E3/5B through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ7.5A-E3/5B 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 SMBJ7.5A-E3/5B reliable?
The price and inventory of SMBJ7.5A-E3/5B are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBJ7.5A-E3/5B is usually 5 days.
3.What payment methods are accepted for SMBJ7.5A-E3/5B?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ7.5A-E3/5B transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ7.5A-E3/5B?
SMBJ7.5A-E3/5B orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ7.5A-E3/5B 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 SMBJ7.5A-E3/5B?
For technical support, including SMBJ7.5A-E3/5B datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ7.5A-E3/5B requirements.
6.How does Aetrix verify that SMBJ7.5A-E3/5B is sourced from the original manufacturer or authorized distributors?
All SMBJ7.5A-E3/5B 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 SMBJ7.5A-E3/5B meets industry standards.
7.What is the process for return or replacement of SMBJ7.5A-E3/5B?
All SMBJ7.5A-E3/5B units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ7.5A-E3/5B, 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 SMBJ7.5A-E3/5B part is unused and in its original packaging.
Return procedure for SMBJ7.5A-E3/5B:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBJ7.5A-E3/5B 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
Comparator circuit design covering voltage thresholds, input limits, open-collector outputs, LM393 wiring, op-amp differences, hysteresis, timing, window detection and practical fault diagnosis.
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 …
