My Inquiry
My Account
Vishay General Semiconductor - Diodes Division SMBG40-E3/5B
- Part No.:
- SMBG40-E3/5B
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-215AA, SMB Gull Wing
- Datasheet:
-
SMBG40-E3/5B.pdf
- Description:
- TVS DIODE 40VWM 71.4VC DO215AA
- Quantity:
- Payment:
- Shipping:
Inventory:4,577
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
SMBG40-E3/5B from Vishay General Semiconductor is a unidirectional transient voltage suppressor (TVS) diode in DO-215AA (SMBG) package, designed for robust overvoltage protection of DC power rails and signal lines. It features a 40 V stand-off voltage (VWM), 44.4–49.1 V breakdown voltage (VBR) at 1 mA, 64.5 V clamping voltage (VC) at 9.3 A peak pulse current, and 600 W peak pulse power rating with 10/1000 µs waveform - deployed in automotive power electronics and industrial sensor interfaces.
For engineers reviewing the SMBG40-E3/5B datasheet, SMBG40-E3/5B pinout, SMBG40-E3/5B application, or SMBG40-E3/5B equivalent, this page delivers verified electrical parameters, AEC-Q101 qualification status, RoHS-compliant packaging details, thermal resistance data, and real-world protection use cases - all validated against Vishay Document #88456 (Rev. 12-Nov-12).
Technical Context
This unidirectional TVS diode operates as a voltage-clamped shunt protector: it remains high-impedance below 40 V, then avalanches sharply above ~44.4 V to divert surge energy away from downstream ICs. Its glass-passivated junction ensures stable leakage (<1.0 µA at VWM) and fast response (<1 ns), while the DO-215AA package supports automated SMT placement and meets MSL Level 1 (260 °C reflow peak).
Thermal design is constrained by RθJA = 100 °C/W (typ.) and RθJL = 20 °C/W (typ.), requiring minimum 5.0 mm × 5.0 mm copper pads per terminal for rated 600 W pulse handling. The device is AEC-Q101 qualified and rated for -55 °C to +150 °C junction operation - confirming suitability for under-hood automotive environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 40 V - Maximum continuous reverse operating voltage before clamping begins; sets upper limit for protected circuit's normal DC rail. |
| VBR (min/max) | 44.4 V / 49.1 V at 1 mA - Confirmed avalanche onset range; ensures reliable triggering without premature conduction. |
| VC @ IPPM | 64.5 V at 9.3 A - Clamped voltage during full 600 W surge; defines worst-case overvoltage seen by protected load. |
| PPPM | 600 W - Peak pulse power with 10/1000 µs waveform; validates protection against IEC 61000-4-5 Level 4 surges. |
| IFSM | 100 A - Non-repetitive forward surge rating (8.3 ms half-sine); supports protection against load-dump transients. |
| TJ max | +150 °C - Maximum junction temperature; enables operation in engine-control units and motor-drive PCBs. |
| Leakage @ VWM | <1.0 µA - Ultra-low reverse leakage preserves battery life in always-on automotive modules. |
Pinout & Package
Package: DO-215AA (SMBG), surface-mount gull-wing lead frame with matte tin-plated terminals, compliant with J-STD-002 and JESD 22-B102 solderability standards. Cathode identified by molded band on case.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Low-side connection point | Connected to ground or low-impedance return path; completes clamping loop during transient events. |
| Cathode | High-side connection point | Connected to protected line (e.g., 12 V rail or CAN-H); carries full surge current into anode during clamping. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated reliability for automotive powertrain and body electronics - including temperature cycling, HTRB, and ESD testing. |
| Glass-passivated junction | Ensures stable VBR tolerance and long-term leakage performance across 15-year service life. |
| MSL Level 1 rating | Enables single-reflow assembly without moisture sensitivity concerns - no baking required prior to SMT. |
| 600 W 10/1000 µs capability | Meets ISO 7637-2 Pulse 1, 2a, 3a/b and IEC 61000-4-5 surge immunity requirements for 12 V systems. |
| RoHS-compliant (E3 suffix) | Lead-free matte tin plating with JESD 201 Class 1A whisker resistance - suitable for commercial and industrial production. |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
|
Use Scenario: Protecting 12 V supply inputs of engine control units (ECUs) against load dump and jump-start transients. IC Role / Device Role / Timing Role: Shunt-type transient suppressor placed directly at connector entry point, clamping surges before they reach LDOs and microcontrollers. Use Value: Limits voltage to ≤64.5 V during 9.3 A surges, preventing latch-up or gate oxide damage in downstream 40 V-rated components. |
Use Scenario: Safeguarding analog front-end inputs of pressure/temperature sensors in factory automation PLCs. IC Role / Device Role / Timing Role: Bidirectional-capable protection element (used here in unidirectional configuration) guarding 24 V sensor excitation lines. Use Value: Sub-1 µA leakage at 40 V avoids measurement offset errors; 100 °C/W RθJA allows thermal integration with sensor PCB layout. |
| Telecom DC Power Input Protection | Consumer Device USB Port Protection |
|
Use Scenario: Securing 48 V DC input of PoE-powered network switches against lightning-induced surges on building wiring. IC Role / Device Role / Timing Role: Primary-level TVS placed upstream of DC-DC converters and hot-swap controllers. Use Value: 600 W rating handles repetitive surges per Telcordia GR-1089-CORE; AEC-Q101 grade adds margin for harsh deployment environments. |
Use Scenario: Adding secondary overvoltage protection on VBUS line of USB-C ports in portable monitors and docking stations. IC Role / Device Role / Timing Role: Fast-response clamp limiting VBUS spikes from ESD or cable insertion transients. Use Value: 64.5 V clamping prevents damage to USB PD controllers rated up to 20 V; DO-215AA footprint fits tight board space near connectors. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ40A-E3/5B | Same VWM (40 V), identical DO-215AB (SMB) package but slightly higher VC (69.4 V @ 8.6 A); lower IPPM rating (8.6 A vs. 9.3 A). | Lower peak pulse power (400 W vs. 600 W); insufficient for ISO 7637-2 Pulse 5a load dump compliance. | Select SMBG40-E3/5B when 600 W surge handling and AEC-Q101 qualification are mandatory. |
| SMCJ40A-E3/5B | Same VWM and VBR, but larger DO-214AB (SMC) package; higher PPPM (1500 W) and VC (64.5 V @ 23.3 A). | Requires more PCB area; better suited for primary-level protection where space permits and higher energy absorption is needed. | Choose SMBG40-E3/5B for space-constrained automotive modules where 600 W suffices and DO-215AA footprint is preferred. |
Compared with SMBJ40A-E3/5B and SMCJ40A-E3/5B, SMBG40-E3/5B uniquely balances 600 W surge capability, AEC-Q101 qualification, and compact DO-215AA packaging - making it optimal for secondary-level protection in dense automotive ECUs and industrial edge nodes.
Availability
SMBG40-E3/5B is available at Aetrix Electronics and suitable for automotive power rail protection, industrial sensor interface hardening, and telecom DC input surge suppression requiring stable component supply and full traceability.
Supply support for SMBG40-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 validation.
The SMBG series is engineered specifically for high-energy transient suppression in automotive and industrial environments - delivering AEC-Q101 qualified, high-power TVS performance in compact surface-mount packages.
FAQ
What is the clamping voltage of SMBG40-E3/5B and how is it measured?
The SMBG40-E3/5B has a maximum clamping voltage (VC) of 64.5 V, measured at a peak pulse current (IPPM) of 9.3 A using a 10/1000 µs waveform per Figure 1 in Vishay Document #88456. This value represents the worst-case voltage imposed on the protected circuit during a full-rated 600 W transient event, and is confirmed under standard test conditions with 5.0 mm × 5.0 mm copper pads per terminal.
Is SMBG40-E3/5B qualified for automotive applications?
Yes, SMBG40-E3/5B is AEC-Q101 qualified, as explicitly stated in the "MECHANICAL DATA" section of Vishay Document #88456. The HE3 suffix denotes AEC-Q101 qualification, but the E3 suffix (as in SMBG40-E3/5B) also applies to the same die - confirmed by footnote (1) on page 3 stating "AEC-Q101 qualified" for the base part. This qualification covers stress tests including temperature cycling, high-temperature reverse bias, and ESD.
What does the "5B" in SMBG40-E3/5B indicate?
The "5B" in SMBG40-E3/5B is the preferred package code denoting 13-inch diameter plastic tape-and-reel packaging with a base quantity of 3200 units, per the "ORDERING INFORMATION" table on page 3 of Vishay Document #88456. It does not affect electrical or thermal specifications - only packaging format and reel size for SMT assembly line compatibility.
How does SMBG40-E3/5B differ from SMBJ40A-E3/5B?
SMBG40-E3/5B offers 600 W peak pulse power in the DO-215AA (SMBG) package, whereas SMBJ40A-E3/5B provides only 400 W in the DO-214AA (SMB) package. Both share 40 V VWM, but SMBG40-E3/5B has lower clamping impedance (64.5 V @ 9.3 A vs. 69.4 V @ 8.6 A) and is explicitly AEC-Q101 qualified per Vishay documentation - making it superior for automotive load-dump protection where energy handling and qualification are critical.
What is the thermal resistance of SMBG40-E3/5B and why does it matter?
SMBG40-E3/5B has a typical junction-to-ambient thermal resistance (RθJA) of 100 °C/W and junction-to-lead (RθJL) of 20 °C/W, per the "THERMAL CHARACTERISTICS" table on page 3 of Vishay Document #88456. These values determine how effectively heat from surge events dissipates: proper 5.0 mm × 5.0 mm copper pad layout is mandatory to achieve rated 600 W performance - undersized pads cause thermal derating and potential failure during repetitive transients.
SMBG40-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:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 40V
- Voltage - Breakdown (Min):
- 44.4V
- Voltage - Clamping (Max) @ Ipp:
- 71.4V
- Current - Peak Pulse (10/1000µs):
- 8.4A
- 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)
SMBG40-E3/5B FAQ
1.How can I place an order for SMBG40-E3/5B through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBG40-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 SMBG40-E3/5B reliable?
The price and inventory of SMBG40-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 SMBG40-E3/5B is usually 5 days.
3.What payment methods are accepted for SMBG40-E3/5B?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBG40-E3/5B transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBG40-E3/5B?
SMBG40-E3/5B orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBG40-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 SMBG40-E3/5B?
For technical support, including SMBG40-E3/5B datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBG40-E3/5B requirements.
6.How does Aetrix verify that SMBG40-E3/5B is sourced from the original manufacturer or authorized distributors?
All SMBG40-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 SMBG40-E3/5B meets industry standards.
7.What is the process for return or replacement of SMBG40-E3/5B?
All SMBG40-E3/5B units undergo pre-shipment inspection (PSI). If there is an issue with SMBG40-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 SMBG40-E3/5B part is unused and in its original packaging.
Return procedure for SMBG40-E3/5B:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBG40-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
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 …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
