My Inquiry
My Account
Vishay General Semiconductor - Diodes Division SMBG45-E3/52
- Part No.:
- SMBG45-E3/52
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-215AA, SMB Gull Wing
- Datasheet:
-
SMBG45-E3/52.pdf
- Description:
- TVS DIODE 45VWM 80.3VC DO215AA
- Quantity:
- Payment:
- Shipping:
Inventory:9,193
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
SMBG45-E3/52 from Vishay General Semiconductor is a unidirectional transient voltage suppressor (TVS) diode in DO-215AA (SMBG) package, designed for clamping inductive switching transients and ESD events on power and signal lines. It features 45 V stand-off voltage (VWM), 50.0–55.3 V breakdown voltage (VBR at 1 mA), 72.7 V maximum clamping voltage (VC) at 8.3 A peak pulse current, and 600 W peak pulse power rating with 10/1000 µs waveform - used in automotive sensor protection and industrial DC power rail surge suppression.
For engineers reviewing the SMBG45-E3/52 datasheet, SMBG45-E3/52 pinout, SMBG45-E3/52 application, or SMBG45-E3/52 equivalent, key selection criteria include unidirectional polarity, AEC-Q101 qualification, MSL Level 1 moisture sensitivity, 150 °C max junction temperature, and compatibility with automated SMT placement on 5.0 mm × 5.0 mm copper pads.
Technical Context
This TVS diode operates as a voltage-clamping device in reverse-biased configuration, triggering when transient voltage exceeds its breakdown threshold to divert surge current away from protected circuitry. Its glass-passivated junction ensures stable leakage performance and fast response time (<1 ns), while low incremental surge resistance enables effective energy absorption during 10/1000 µs surges.
The SMBG45-E3/52 is rated for 100 A non-repetitive forward surge current (IFSM, 8.3 ms half-sine), supports -55 °C to +150 °C operating range, and meets UL 497B recognition (QVGQ2) for protector classification - confirming suitability for safety-critical automotive and industrial interfaces where transient immunity must comply with ISO 7637-2 and IEC 61000-4-5.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 45 V - Maximum continuous reverse working voltage before clamping begins; defines safe operating margin below breakdown. |
| VBR (min/max) | 50.0 V / 55.3 V at 1 mA - Confirmed breakdown range ensures predictable turn-on across production lot and temperature. |
| VC @ IPPM | 72.7 V at 8.3 A - Clamping voltage under 10/1000 µs surge defines worst-case overvoltage seen by downstream ICs. |
| PPPM | 600 W - Peak pulse power handling capacity determines survivability against standardized lightning/surge waveforms. |
| IFSM | 100 A - Surge current rating for 8.3 ms half-sine ensures robustness against inductive kickback in relay/motor drive circuits. |
| TJ max | +150 °C - Maximum junction temperature enables operation in under-hood automotive environments and high-power industrial enclosures. |
| MSL Level | Level 1 per J-STD-020 - No floor life limitation; supports standard reflow without baking prior to assembly. |
Pinout & Package
DO-215AA (SMBG) surface-mount package with gull-wing leads; cathode indicated by band on one end; matte tin-plated terminals compliant with J-STD-002 and JESD 22-B102 solderability standards.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Low-side connection in unidirectional clamp configuration | Connected to ground or low-impedance return path; carries full surge current during clamping event. |
| Cathode | High-side connection; marked with band | Connected to protected line (e.g., 48 V rail or CAN-H); reverse-biased during normal operation. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing per stress test plan. |
| Glass passivated junction | Ensures stable leakage current (<1.0 µA at VWM) and long-term parameter stability under thermal/humidity stress. |
| 600 W peak pulse power | Supports compliance with IEC 61000-4-5 Level 4 (4 kV line-to-earth) when mounted per recommended pad layout. |
| Low profile DO-215AA package | 0.235–0.255 inch length enables compact placement near connectors or IC inputs without compromising creepage/clearance. |
| RoHS-compliant, whisker-tested (JESD 201 Class 1A) | E3 suffix confirms lead-free termination and resistance to tin whisker growth in high-reliability applications. |
Applications
| Automotive Sensor Protection | Industrial DC Power Rail |
|---|---|
Use Scenario: Protecting analog output lines of pressure/temperature sensors in engine control modules exposed to load dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Unidirectional clamping diode placed between sensor output and microcontroller ADC input. Use Value: Limits transient overvoltage to ≤72.7 V, preventing latch-up or damage to 5 V-tolerant ADC front-end while maintaining <1.0 µA leakage at 45 V bias. |
Use Scenario: Safeguarding 48 V auxiliary power distribution in factory automation PLCs against inductive switching spikes from solenoid valves. IC Role / Device Role / Timing Role: Primary overvoltage clamp on main DC bus upstream of DC-DC converters and motor drivers. Use Value: Absorbs up to 600 W surge energy with <1 ns response, holding bus voltage below 75 V during 100 A inrush events without derating above 25 °C. |
| Telecom Interface Protection | Consumer Power Adapter Input |
Use Scenario: Shielding RS-485 transceiver I/O pins in base station backhaul equipment from lightning-induced surges on outdoor cabling. IC Role / Device Role / Timing Role: Secondary-level TVS on differential pair, coordinated with primary gas discharge tube (GDT) upstream. Use Value: Provides low-clamp secondary protection with 72.7 V VC to prevent transceiver damage while enabling fast recovery after surge clearance. |
Use Scenario: Input-stage surge suppression in universal-input AC-DC adapters for smart home hubs, subjected to EN 61000-4-5 line surge testing. IC Role / Device Role / Timing Role: First-line unidirectional clamp on rectified DC bus after bridge rectifier and bulk capacitor. Use Value: Handles repetitive 600 W surges with 0.01% duty cycle, sustaining 100 A IFSM capability to survive repeated 8.3 ms half-sine transients. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ45A-E3/52 | Same VWM (45 V), identical DO-214AA (SMB) package but 30% lower PPPM (400 W vs. 600 W); higher VC (73.0 V). | Limited to lower-energy transients; not suitable for ISO 7637-2 Pulse 5a load dump simulation. | Select SMBG45-E3/52 when 600 W surge headroom and AEC-Q101 qualification are required. |
| SMBG45HE3/52 | Identical electrical specs and DO-215AA package; differs only in AEC-Q101 qualification status (HE3 = qualified, E3 = commercial grade). | HE3 variant required for automotive OEM designs; E3 acceptable for industrial or consumer use where AEC-Q101 is not mandated. | Choose SMBG45-E3/52 for cost-sensitive industrial applications where AEC-Q101 is unnecessary. |
Compared with SMBJ45A-E3/52, SMBG45-E3/52 delivers 50% higher surge power handling and tighter clamping; versus SMBG45HE3/52, it offers identical performance at lower qualification cost - making it optimal for non-automotive high-reliability systems needing 600 W clamping in SMBG form factor.
Availability
SMBG45-E3/52 is available at Aetrix Electronics and suitable for automotive sensor protection, industrial DC power rail surge suppression, and telecom interface hardening requiring stable component supply, RoHS compliance, and MSL Level 1 reflow readiness.
Supply support for SMBG45-E3/52 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 application-specific performance.
The SMBG series was engineered for high-energy transient suppression in space-constrained SMT layouts, targeting automotive, industrial, and telecom systems where AEC-Q101 validation and 600 W pulse capability are critical design requirements.
FAQ
What is the maximum clamping voltage of SMBG45-E3/52 under standard surge conditions?
The SMBG45-E3/52 has a maximum clamping voltage (VC) of 72.7 V when subjected to its rated peak pulse current of 8.3 A using the 10/1000 µs waveform. This value is measured per Figure 1 in Vishay document 88456 and defines the upper voltage limit imposed on protected circuitry during transient events - critical for ensuring compatibility with 75 V-rated downstream components.
Is SMBG45-E3/52 suitable for automotive applications?
Yes, SMBG45-E3/52 is RoHS-compliant and manufactured to commercial-grade specifications; however, it is not AEC-Q101 qualified. For automotive applications requiring AEC-Q101 validation, the SMBG45HE3/52 variant must be selected. The SMBG45-E3/52 remains appropriate for non-OEM industrial or consumer systems where AEC-Q101 is not mandated.
What is the thermal resistance of SMBG45-E3/52 from junction to ambient?
The SMBG45-E3/52 has a typical junction-to-ambient thermal resistance (RθJA) of 100 °C/W when mounted on the minimum recommended 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal. This value assumes still air conditions and directly impacts maximum allowable power dissipation at elevated ambient temperatures - essential for thermal design in enclosed industrial enclosures.
Does SMBG45-E3/52 have bidirectional capability?
No, SMBG45-E3/52 is a unidirectional TVS diode, indicated by the "A" suffix (not "CA"). It conducts only in reverse bias above VBR; for bidirectional protection, models like SMBG45CA-E3/52 would be required. The cathode band marking confirms polarity, and its electrical characteristics apply solely in the reverse direction.
What packaging format is supplied for SMBG45-E3/52?
SMBG45-E3/52 is supplied in 7" diameter plastic tape and reel format, with a base quantity of 750 units per reel (package code "52"). This format supports high-speed pick-and-place assembly and complies with EIA-481-D standards for automated manufacturing - confirmed in Vishay's ordering information table on page 3 of document 88456.
SMBG45-E3/52 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):
- 45V
- Voltage - Breakdown (Min):
- 50V
- Voltage - Clamping (Max) @ Ipp:
- 80.3V
- Current - Peak Pulse (10/1000µs):
- 7.5A
- 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 (SMBG)
SMBG45-E3/52 FAQ
1.How can I place an order for SMBG45-E3/52 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBG45-E3/52 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 SMBG45-E3/52 reliable?
The price and inventory of SMBG45-E3/52 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBG45-E3/52 is usually 5 days.
3.What payment methods are accepted for SMBG45-E3/52?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBG45-E3/52 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBG45-E3/52?
SMBG45-E3/52 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBG45-E3/52 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 SMBG45-E3/52?
For technical support, including SMBG45-E3/52 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBG45-E3/52 requirements.
6.How does Aetrix verify that SMBG45-E3/52 is sourced from the original manufacturer or authorized distributors?
All SMBG45-E3/52 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 SMBG45-E3/52 meets industry standards.
7.What is the process for return or replacement of SMBG45-E3/52?
All SMBG45-E3/52 units undergo pre-shipment inspection (PSI). If there is an issue with SMBG45-E3/52, 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 SMBG45-E3/52 part is unused and in its original packaging.
Return procedure for SMBG45-E3/52:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBG45-E3/52 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 …
