My Inquiry
My Account
Vishay General Semiconductor - Diodes Division SMBG7.5C-E3/5B
- Part No.:
- SMBG7.5C-E3/5B
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-215AA, SMB Gull Wing
- Datasheet:
-
SMBG7.5C-E3/5B.pdf
- Description:
- TVS DIODE 7.5VWM 14.3VC DO215AA
- Quantity:
- Payment:
- Shipping:
Inventory:5,887
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
SMBG7.5C-E3/5B from Vishay General Semiconductor is a bi-directional transient voltage suppressor (TVS) diode in DO-215AA (SMBG) package, designed for clamping voltage transients on signal or power lines. It features 7.5 V stand-off voltage (VWM), 8.33–9.21 V breakdown voltage (VBR) at 1.0 mA test current, 12.9 V maximum clamping voltage (VC) at 46.5 A peak pulse current, and 600 W peak pulse power rating with 10/1000 µs waveform.
For engineers reviewing the SMBG7.5C-E3/5B datasheet, SMBG7.5C-E3/5B pinout, SMBG7.5C-E3/5B application, or SMBG7.5C-E3/5B equivalent, key selection criteria include bi-directional clamping capability, AEC-Q101 qualification for automotive use, low clamping ratio (VC/VBR ≈ 1.55), RoHS-compliant matte tin terminals, and MSL Level 1 moisture sensitivity rating.
Technical Context
This bi-directional TVS diode operates symmetrically in both polarities, enabling protection of AC-coupled or differential signal lines without polarity constraints. Its glass-passivated junction ensures stable breakdown characteristics and low leakage (<1.0 µA at VWM), while the 100 °C/W junction-to-ambient thermal resistance supports operation up to +150 °C junction temperature under defined PCB pad conditions.
The device complies with ANSI/IEEE C62.35 surge standards and delivers fast response time (sub-nanosecond) to transient events such as ESD, inductive switching spikes, and lightning-induced surges. Its 600 W peak pulse power rating is specified at 10/1000 µs waveform with 0.01% duty cycle, and derating applies above TA = 25 °C per published thermal curves.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 7.5 V - Maximum continuous reverse operating voltage before clamping begins; defines safe signal swing range. |
| VBR min/max | 8.33 V / 9.21 V at 1.0 mA - Confirmed breakdown threshold range; ensures reliable turn-on during overvoltage events. |
| VC @ IPPM | 12.9 V at 46.5 A - Clamped voltage under full-rated surge; limits downstream IC stress to safe levels. |
| PPPM | 600 W (10/1000 µs) - Peak transient energy handling capacity; supports robust protection in industrial and automotive environments. |
| TJ max | +150 °C - Maximum junction temperature; enables deployment in under-hood or high-temperature PCB locations. |
| Polarity | Bi-directional - No cathode marking; protects AC signals, differential buses (e.g., RS-485, CAN), and unidirectional lines with reversed polarity risk. |
| MSL Level | Level 1 (J-STD-020) - Supports standard reflow without baking; compatible with automated SMT assembly at 260 °C peak. |
Pinout & Package
Package: DO-215AA (SMBG), surface-mount gull-wing leaded case with 0.235–0.255 inch body length, 0.130–0.155 inch width, and 0.075–0.095 inch height. Matte tin-plated leads meet J-STD-002 solderability and JESD22-B102 reliability standards. Bi-directional devices have no polarity marking.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (symmetrical) | Transient conduction path | Both terminals function identically; surge current flows bidirectionally between them when voltage exceeds VBR in either polarity. |
| Case (exposed metal slug) | Thermal conduction path | Not electrically connected; provides mechanical stability and aids heat dissipation via PCB copper pads (0.2" × 0.2" recommended). |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power | Enables protection against high-energy transients (e.g., ISO 7637-2 Pulse 5a) without derating in compact SMBG footprint. |
| AEC-Q101 qualified | Validated for automotive applications including engine control units, infotainment interfaces, and ADAS sensor lines. |
| Glass passivated junction | Ensures stable VBR over lifetime and temperature; reduces parameter drift vs. epoxy-passivated alternatives. |
| Low clamping ratio (VC/VBR ≈ 1.55) | Minimizes voltage overshoot during clamping-critical for protecting 3.3 V or 5 V logic-level ICs downstream. |
| RoHS-compliant, MSL Level 1 | Supports lead-free reflow assembly without moisture-related defects; eliminates pre-bake requirement in production. |
Applications
| Automotive Sensor Protection | Industrial RS-485 Interface |
|---|---|
Use Scenario: Protecting analog output lines of pressure, temperature, or position sensors in engine compartments exposed to load dump and alternator ripple. IC Role / Device Role / Timing Role: Transient voltage suppressor placed at connector entry point to clamp spikes before reaching ADC input or signal conditioner IC. Use Value: Limits induced transients to ≤12.9 V, preventing latch-up or damage to 5 V rail-tied op-amps and microcontroller analog front-ends. | Use Scenario: Safeguarding half-duplex RS-485 transceivers (e.g., SN65HVD230) in factory automation networks subject to ground loop surges and cable ESD. IC Role / Device Role / Timing Role: Bi-directional clamping element across differential pair (A/B) and common-mode line to absorb ±15 kV contact ESD per IEC 61000-4-2. Use Value: Maintains signal integrity by clamping common-mode transients without distorting differential data; no polarity alignment required during layout. |
| Consumer USB Port ESD Protection | Telecom DSL Line Protection |
Use Scenario: Secondary-level ESD protection on USB 2.0 D+/D− lines behind primary TVS array, targeting system-level IEC 61000-4-2 compliance. IC Role / Device Role / Timing Role: Fast-response bi-directional clamp limiting voltage excursion to <13 V during 8 kV air discharge events. Use Value: Prevents gate oxide rupture in USB PHY transceivers while adding <0.5 pF junction capacitance-negligible impact on 480 Mbps signaling. | Use Scenario: Overvoltage protection on POTS/DSL line interface circuits exposed to lightning-induced surges on outside plant wiring. IC Role / Device Role / Timing Role: Primary surge diverter placed between transformer secondary and line driver IC (e.g., LME49710) in xDSL modems. Use Value: Absorbs up to 600 W surge energy while holding clamped voltage below 13 V-within absolute maximum rating of line driver outputs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ7.5CA | Same VWM (7.5 V), identical DO-214AA (SMB) package but slightly larger footprint (0.230" × 0.155"); 10% higher VC (14.4 V @ 43.3 A). | Higher clamping voltage reduces margin for 5 V systems; preferred where board space allows larger SMB package. | Select SMBJ7.5CA only if existing layout uses SMB footprint and higher VC is acceptable. |
| 1.5KE7.5CA | Through-hole DO-201 package; same VWM and VC specs but 1.5 kW rating (10/1000 µs); not surface-mountable. | Requires through-hole assembly; unsuitable for high-density or automated SMT lines. | Choose 1.5KE7.5CA only for prototyping, legacy through-hole designs, or where higher surge rating justifies manual assembly. |
Compared with SMBJ7.5CA and 1.5KE7.5CA, SMBG7.5C-E3/5B offers optimal balance of compact DO-215AA footprint, AEC-Q101 qualification, and tight 12.9 V clamping-making it the preferred choice for automotive and space-constrained industrial SMT designs requiring bi-directional protection.
Availability
SMBG7.5C-E3/5B is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial RS-485 networks, and consumer USB port protection requiring stable component supply and long-term lifecycle support.
Supply support for SMBG7.5C-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, MOSFETs, optoelectronics, and passive components with emphasis on reliability and automotive-grade qualification.
The SMBG series is part of Vishay's TRANSZORB® TVS platform, engineered specifically for high-reliability transient suppression in harsh environments-including under-hood automotive, industrial controls, and telecom infrastructure-where consistent clamping performance and AEC-Q101 validation are mandatory.
FAQ
What does the "C" suffix in SMBG7.5C-E3/5B indicate?
The "C" suffix denotes bi-directional configuration, meaning SMBG7.5C-E3/5B provides symmetrical clamping for both positive and negative transients. Unlike uni-directional variants (e.g., SMBG7.5A), it has no cathode band marking and is used where polarity of surge events cannot be guaranteed-such as AC signal lines, differential buses, or ungrounded systems. This is confirmed in Vishay's datasheet revision 12-Nov-12, Document Number 88456.
Is SMBG7.5C-E3/5B suitable for automotive applications?
Yes, SMBG7.5C-E3/5B is AEC-Q101 qualified, as explicitly stated in the Vishay datasheet under Mechanical Data and Ratings sections. This certification validates its reliability for automotive use cases including engine control modules, body electronics, and ADAS sensor interfaces. The device operates from −55 °C to +150 °C and meets MSL Level 1 for lead-free reflow-key requirements for under-hood deployment. SMBG7.5C-E3/5B also carries HE3 suffix variants for enhanced whisker resistance.
What is the maximum clamping voltage for SMBG7.5C-E3/5B and at what current?
The maximum clamping voltage (VC) for SMBG7.5C-E3/5B is 12.9 V, measured at 46.5 A peak pulse current (IPPM) using the standard 10/1000 µs waveform. This value is listed in the Electrical Characteristics table on page 2 of the Vishay datasheet (Document Number 88456). The low VC ensures downstream 5 V ICs remain within safe operating voltage limits during surge events, directly supporting robust system-level EMC design.
Does SMBG7.5C-E3/5B require polarity-aware PCB layout?
No, SMBG7.5C-E3/5B does not require polarity-aware layout because it is a bi-directional TVS diode with symmetrical terminal behavior. The Vishay datasheet states "no marking on bi-directional types" and confirms electrical characteristics apply in both directions. This eliminates orientation errors during automated placement and simplifies routing for differential pairs or AC-coupled signals-unlike uni-directional variants such as SMBG7.5A, which require cathode alignment. SMBG7.5C-E3/5B's DO-215AA package has identical terminals with no functional distinction.
What is the junction-to-ambient thermal resistance (RθJA) of SMBG7.5C-E3/5B?
The typical junction-to-ambient thermal resistance (RθJA) of SMBG7.5C-E3/5B is 100 °C/W, as specified in the Thermal Characteristics table on page 3 of the Vishay datasheet. This value assumes mounting on 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal. It determines allowable power dissipation at elevated ambient temperatures and informs thermal derating above TA = 25 °C-critical for sustained surge duty cycles or high-temperature environments. SMBG7.5C-E3/5B also has RθJL = 20 °C/W for junction-to-lead conduction.
SMBG7.5C-E3/5B Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-215AA, SMB Gull Wing
- Series:
- TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 7.5V
- Voltage - Breakdown (Min):
- 8.33V
- Voltage - Clamping (Max) @ Ipp:
- 14.3V
- Current - Peak Pulse (10/1000µs):
- 42A
- 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 (SMBG)
SMBG7.5C-E3/5B FAQ
1.How can I place an order for SMBG7.5C-E3/5B through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBG7.5C-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 SMBG7.5C-E3/5B reliable?
The price and inventory of SMBG7.5C-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 SMBG7.5C-E3/5B is usually 5 days.
3.What payment methods are accepted for SMBG7.5C-E3/5B?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBG7.5C-E3/5B transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBG7.5C-E3/5B?
SMBG7.5C-E3/5B orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBG7.5C-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 SMBG7.5C-E3/5B?
For technical support, including SMBG7.5C-E3/5B datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBG7.5C-E3/5B requirements.
6.How does Aetrix verify that SMBG7.5C-E3/5B is sourced from the original manufacturer or authorized distributors?
All SMBG7.5C-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 SMBG7.5C-E3/5B meets industry standards.
7.What is the process for return or replacement of SMBG7.5C-E3/5B?
All SMBG7.5C-E3/5B units undergo pre-shipment inspection (PSI). If there is an issue with SMBG7.5C-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 SMBG7.5C-E3/5B part is unused and in its original packaging.
Return procedure for SMBG7.5C-E3/5B:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBG7.5C-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 …
