My Inquiry
My Account
Vishay General Semiconductor - Diodes Division SMBG188AHE3/52
- Part No.:
- SMBG188AHE3/52
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-215AA, SMB Gull Wing
- Datasheet:
-
SMBG188AHE3/52.pdf
- Description:
- TVS DIODE 188VWM 328VC DO215AA
- Quantity:
- Payment:
- Shipping:
Inventory:2,237
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
SMBG188AHE3/52 from Vishay General Semiconductor is a unidirectional transient voltage suppressor (TVS) diode in SMBG (DO-215AA) package, designed for high-energy surge protection with 188 V stand-off voltage, 209–231 V breakdown voltage at 1 mA, 328 V clamping voltage at 2.0 A peak pulse current, and 600 W peak pulse power capability under 10/1000 μs waveform. It is AEC-Q101 qualified and used to protect automotive power lines and industrial sensor interfaces against inductive switching transients.
For engineers reviewing the SMBG188AHE3/52 datasheet, SMBG188AHE3/52 pinout, SMBG188AHE3/52 application, or SMBG188AHE3/52 equivalent, this page delivers verified electrical parameters, polarity marking guidance, thermal resistance values, junction capacitance behavior, and real-world selection criteria for high-voltage DC bus and battery-supplied systems requiring robust ESD and surge immunity.
Technical Context
This TVS diode operates as a unidirectional clamping device with cathode-band polarity marking, optimized for fast response (<1 ns) to voltage spikes while maintaining low incremental surge resistance. Its glass-passivated junction ensures stable breakdown characteristics over temperature and lifetime.
The SMBG188AHE3/52 is rated for -55 °C to +150 °C operating junction temperature, features 100 °C/W junction-to-ambient thermal resistance on standard 5.0 mm × 5.0 mm copper pads, and meets J-STD-020 MSL Level 1 with 260 °C reflow peak, supporting automated SMT assembly in automotive-grade production.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 188 V - Maximum continuous reverse operating voltage before clamping begins; defines upper limit of protected circuit's normal operating range. |
| VBR min/max | 209 V / 231 V at IT = 1 mA - Confirmed breakdown threshold window; ensures reliable turn-on above system overvoltage margin. |
| VC @ IPPM | 328 V at 2.0 A - Clamped voltage during full 600 W surge event; determines maximum stress imposed on downstream ICs or MOSFETs. |
| PPPM | 600 W - Peak pulse power handling per 10/1000 μs waveform; supports IEC 61000-4-5 Level 4 surge immunity testing. |
| IFSM | 100 A - Non-repetitive forward surge rating (8.3 ms half-sine); validates compatibility with high-current load-dump events in 12 V/24 V automotive systems. |
| Junction Temp | -55 °C to +150 °C - Full automotive-grade operating envelope; enables deployment in engine bay, battery management, and ADAS power domains. |
Pinout & Package
Package: SMBG (DO-215AA), surface-mount, low-profile case with matte tin-plated leads solderable per J-STD-002 and JESD 22-B102; polarity indicated by cathode band on one end.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Anode-side connection point for unidirectional clamping | Connected to protected line (e.g., battery rail); conducts surge current toward ground when voltage exceeds VBR. |
| Anode (unmarked end) | Reference/ground return path | Typically tied to chassis or system ground plane; completes clamping loop and defines reference for VWM/VC ratings. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive under-hood applications including powertrain and body control modules with zero early-life failure requirements. |
| Glass passivated junction | Ensures stable VBR tolerance and long-term reliability under thermal cycling and humidity exposure per JESD22-A101. |
| MSL Level 1 rating | Enables single-pass reflow without baking; eliminates moisture-related popcorning risk in high-volume SMT lines. |
| 600 W 10/1000 μs capability | Supports sustained suppression of ISO 7637-2 Pulse 5a (load dump) and IEC 61000-4-5 Combination Wave surges up to 4 kV. |
Applications
| Automotive Battery Line Protection | Industrial Sensor Signal Line Guarding |
|---|---|
Use Scenario: Protecting 24 V battery-fed ECUs from load dump transients exceeding 100 V during alternator regulation failure. IC Role / Device Role / Timing Role: Unidirectional TVS placed between battery rail and input filter capacitor to clamp surges before they reach DC/DC converters or microcontrollers. Use Value: Limits peak voltage to ≤328 V at 2.0 A, preventing damage to 36 V-rated input stages and enabling compliance with ISO 16750-2 Section 4.7. | Use Scenario: Shielding analog outputs of pressure sensors in hydraulic control units from EFT bursts induced by solenoid switching. IC Role / Device Role / Timing Role: Low-capacitance TVS mounted directly at connector entry point to shunt sub-100 ns transients before signal conditioning amplifiers. Use Value: Maintains signal integrity with <10 pF junction capacitance at 0 V bias, avoiding bandwidth degradation in 10 kHz sensor bandwidth paths. |
| Telecom Power Supply Input Stage | Renewable Energy Inverter DC Link |
Use Scenario: Safeguarding AC/DC front-end rectifiers in PoE-powered switches against lightning-induced surges on primary-side 48 V inputs. IC Role / Device Role / Timing Role: Primary-side TVS connected across bulk capacitor to absorb repetitive 600 W pulses without thermal runaway. Use Value: Delivers 100 °C/W θJA on standard pads, enabling stable operation at 85 °C ambient with no derating below 600 W peak rating. | Use Scenario: Protecting IGBT gate drivers in solar string inverters from voltage reversals during rapid PV array disconnection events. IC Role / Device Role / Timing Role: Bidirectional-capable variant not applicable; SMBG188AHE3/52 used in unidirectional configuration across DC link to clamp positive overvoltage only. Use Value: Withstands 100 A IFSM, surviving 8.3 ms half-sine surges common in grid-tied inverter fault clearing sequences. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBG188A-M3/52 | Halogen-free molding compound; identical electrical specs and AEC-Q101 qualification. | No difference in surge performance or thermal behavior; selected where halogen-free compliance is mandated. | Choose SMBG188A-M3/52 if RoHS + halogen-free material declaration is required for final product certification. |
| SMCJ188AHE3/52 | Same VWM/VBR/VC ratings but in larger SMC (DO-214AB) package with 1500 W PPPM and 200 A IPPM. | Higher energy absorption capacity; suited for systems with higher surge threat levels or longer duration transients. | Choose SMCJ188AHE3/52 when design requires >600 W pulse handling or improved thermal dissipation via larger pad area. |
Compared with SMBG188AHE3/52, the M3 variant offers identical protection performance with halogen-free construction, while the SMCJ188AHE3/52 provides 2.5× higher peak power handling in a physically larger footprint-enabling trade-offs between board space, surge margin, and material compliance.
Availability
SMBG188AHE3/52 is available at Aetrix Electronics and suitable for automotive battery line protection, industrial sensor guarding, telecom power supply inputs, and renewable energy inverter DC link applications requiring stable component supply and AEC-Q101 assurance.
Supply support for SMBG188AHE3/52 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, rectifiers, MOSFETs, and protection devices with emphasis on reliability, automotive qualification, and high-volume manufacturability.
The SMBG series was developed specifically for surface-mount transient suppression in space-constrained, high-reliability environments-including automotive power distribution, industrial automation I/O modules, and telecom infrastructure-where low profile, AEC-Q101 compliance, and repeatable clamping performance are mandatory.
FAQ
What is the clamping voltage of SMBG188AHE3/52 and how is it measured?
The SMBG188AHE3/52 has a maximum clamping voltage (VC) of 328 V, measured at a peak pulse current (IPPM) of 2.0 A using a 10/1000 μs double-exponential waveform per IEC 61000-4-5. This value represents the highest voltage seen across the device during a standardized surge event and is critical for ensuring downstream components remain within their absolute maximum ratings. The SMBG188AHE3/52 achieves this clamping level while dissipating 600 W of transient energy.
Is SMBG188AHE3/52 suitable for automotive applications?
Yes, SMBG188AHE3/52 is AEC-Q101 qualified and rated for -55 °C to +150 °C junction temperature, making it suitable for under-hood automotive use cases such as battery line protection, body control modules, and ADAS power supplies. Its glass-passivated junction, MSL Level 1 reflow compatibility, and 100 A IFSM rating align with ISO 16750-2 and ISO 7637-2 requirements. The SMBG188AHE3/52 is explicitly listed in Vishay's AEC-Q101 qualified product matrix.
What does the "HE3" suffix mean in SMBG188AHE3/52?
The "HE3" suffix in SMBG188AHE3/52 indicates RoHS-compliant construction with AEC-Q101 qualification and standard matte tin plating. "H" denotes AEC-Q101 qualification, "E3" signifies RoHS-compliant industrial grade (per Vishay's ordering nomenclature). The "52" denotes 7″ tape-and-reel packaging with 750 units per reel. This distinguishes SMBG188AHE3/52 from non-automotive variants like SMBG188A-E3/52 (RoHS, not AEC-Q101) or SMBG188A-M3/52 (halogen-free + AEC-Q101).
How does SMBG188AHE3/52 differ from bidirectional TVS diodes like SMBG188CA?
SMBG188AHE3/52 is unidirectional and features a cathode band for polarity identification, conducting only in reverse breakdown to clamp positive transients relative to ground. In contrast, SMBG188CA is bidirectional with symmetrical breakdown in both directions and no polarity marking. The SMBG188AHE3/52 is intended for DC circuits where only one polarity of overvoltage is expected (e.g., battery rails), while SMBG188CA suits AC-coupled or floating signal lines. Their VBR and VC values differ accordingly.
What is the thermal resistance of SMBG188AHE3/52 and how does it affect layout?
SMBG188AHE3/52 has a typical junction-to-ambient thermal resistance (RθJA) of 100 °C/W when mounted on 0.2″ × 0.2″ (5.0 mm × 5.0 mm) copper pads per terminal, as specified in the datasheet. This value assumes minimal copper area; increasing pad size or adding thermal vias reduces RθJA and improves surge endurance. For repeated surge events, PCB layout must provide adequate copper area to avoid junction temperature exceeding 150 °C. The SMBG188AHE3/52's thermal performance directly impacts its ability to sustain multiple 600 W pulses without degradation.
SMBG188AHE3/52 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:
- Active
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 188V
- Voltage - Breakdown (Min):
- 209V
- Voltage - Clamping (Max) @ Ipp:
- 328V
- Current - Peak Pulse (10/1000µs):
- 2A
- Power - Peak Pulse:
- 600W
- Power Line Protection:
- No
- Applications:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AA (SMBG)
SMBG188AHE3/52 FAQ
1.How can I place an order for SMBG188AHE3/52 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBG188AHE3/52 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 SMBG188AHE3/52 reliable?
The price and inventory of SMBG188AHE3/52 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBG188AHE3/52 is usually 5 days.
3.What payment methods are accepted for SMBG188AHE3/52?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBG188AHE3/52 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBG188AHE3/52?
SMBG188AHE3/52 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBG188AHE3/52 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 SMBG188AHE3/52?
For technical support, including SMBG188AHE3/52 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBG188AHE3/52 requirements.
6.How does Aetrix verify that SMBG188AHE3/52 is sourced from the original manufacturer or authorized distributors?
All SMBG188AHE3/52 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 SMBG188AHE3/52 meets industry standards.
7.What is the process for return or replacement of SMBG188AHE3/52?
All SMBG188AHE3/52 units undergo pre-shipment inspection (PSI). If there is an issue with SMBG188AHE3/52, 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 SMBG188AHE3/52 part is unused and in its original packaging.
Return procedure for SMBG188AHE3/52:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBG188AHE3/52 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 …
