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Vishay General Semiconductor - Diodes Division SMBG33HE3/5B
- Part No.:
- SMBG33HE3/5B
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-215AA, SMB Gull Wing
- Datasheet:
-
SMBG33HE3/5B.pdf
- Description:
- TVS DIODE 33VWM 59VC DO215AA
- Quantity:
- Payment:
- Shipping:
Inventory:7,703
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Product details
Overview
SMBG33HE3/5B from Vishay General Semiconductor is a uni-directional transient voltage suppressor (TVS) diode in the SMBG package, designed for robust overvoltage protection of sensitive electronics. It features a 33 V stand-off voltage (VWM), 36.7–40.6 V breakdown voltage (VBR) at 1 mA, 53.3 V clamping voltage (VC) at 11.3 A peak pulse current, and 600 W peak pulse power rating with 10/1000 µs waveform - deployed on power rails and signal lines in automotive ECUs and industrial sensor interfaces.
For engineers reviewing the SMBG33HE3/5B datasheet, SMBG33HE3/5B pinout, SMBG33HE3/5B application, or SMBG33HE3/5B equivalent, this page delivers verified electrical parameters, AEC-Q101 qualification status, DO-215AA package dimensions, clamping performance under surge conditions, and direct alternatives for ESD and load-switching transient suppression.
Technical Context
The SMBG33HE3/5B operates as a uni-directional avalanche diode, leveraging glass-passivated junction technology to achieve sub-nanosecond response time and low incremental surge resistance. Its clamping behavior is defined by a tightly controlled VBR range (36.7–40.6 V) and guaranteed VC ≤ 53.3 V at IPPM = 11.3 A, ensuring predictable protection during 10/1000 µs transients.
Rated for -55 °C to +150 °C junction temperature, it meets AEC-Q101 stress test requirements and is qualified for automotive under-hood applications. The device uses matte tin-plated leads compliant with J-STD-002 and JESD 22-B102, with whisker resistance per JESD 201 Class 2 due to the HE3 suffix.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 33 V - maximum continuous reverse operating voltage before leakage exceeds 1 µA; defines safe DC bias margin |
| VBR (min/max) | 36.7 V / 40.6 V at 1 mA - ensures reliable avalanche initiation across manufacturing lot and temperature |
| VC @ IPPM | 53.3 V at 11.3 A - limits protected circuit voltage during 10/1000 µs surge, preserving downstream ICs |
| PPPM | 600 W - peak pulse power handling capability with 0.01% duty cycle; supports repetitive transient events |
| IFSM | 100 A - 8.3 ms single half-sine surge rating; withstands high-energy inductive turn-off spikes |
| Junction Temp | -55 °C to +150 °C - enables deployment in engine control units and industrial motor drives |
| MSL Level | Level 1 (J-STD-020) - no floor life limitation; compatible with standard SMT reflow profiles up to 260 °C peak |
Pinout & Package
Package: DO-215AA (SMBG), surface-mount gull-wing leaded case with cathode band marking; 0.255" × 0.155" footprint, 0.030" max height, RoHS-compliant matte tin plating.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal | Connected to lower-potential side (e.g., ground or return path); conducts during forward surge or bias |
| Cathode | Avalanche clamping terminal | Marked with band; connected to protected line (e.g., 33 V rail); initiates clamping when reverse voltage exceeds VWM |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive applications including engine management, body control modules, and ADAS sensors |
| Glass-passivated junction | Ensures stable VBR and low leakage (<1 µA at VWM) across temperature and lifetime |
| 600 W 10/1000 µs rating | Provides immunity against ISO 7637-2 Pulse 1, 2a, 3a/b, and IEC 61000-4-5 surges in 12 V systems |
| Low thermal resistance | RθJA = 100 °C/W - enables effective heat dissipation on standard 5 mm × 5 mm copper pads |
| JESD 201 Class 2 whisker resistance | Guarantees long-term solder joint reliability in high-vibration environments (e.g., chassis-mounted ECUs) |
Applications
| Automotive Power Rail Protection | Industrial Sensor Signal Line Guarding |
|---|---|
|
Use Scenario: Protecting 33 V supply inputs in engine control units from load dump and alternator ripple. IC Role / Device Role / Timing Role: Uni-directional TVS clamping element placed between battery feed and LDO input. Use Value: Limits transient excursions to ≤53.3 V, preventing damage to 36 V-rated regulators and microcontrollers. |
Use Scenario: Shielding analog output lines (e.g., 4–20 mA current loop) in factory-floor pressure sensors. IC Role / Device Role / Timing Role: Fast-response shunt protector on transmitter output, referenced to system ground. Use Value: Responds in <1 ns to ESD strikes (IEC 61000-4-2 ±8 kV contact), maintaining signal integrity below 0.1% error. |
| Telecom DC Power Interface | Consumer Appliance Motor Driver Stage |
|
Use Scenario: Safeguarding PoE-powered Ethernet switch ports against induced lightning surges on 48 V DC feeds. IC Role / Device Role / Timing Role: Primary-level TVS on midspan injector output, coordinated with secondary-side MOVs. Use Value: Clamps 10/1000 µs surges to 53.3 V while sustaining 600 W peak, meeting GR-1089-CORE Level 3 requirements. |
Use Scenario: Suppressing inductive kickback from brushed DC motors in smart washing machine control boards. IC Role / Device Role / Timing Role: Flyback energy absorber across H-bridge high-side MOSFET drain-source terminals. Use Value: Handles 100 A 8.3 ms half-sine surges without degradation, extending MOSFET lifetime beyond 100,000 cycles. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ33AHE3/5B | Same VWM (33 V), identical DO-214AB package (not DO-215AA); 600 W rating, but higher VC = 53.3 V at 11.2 A | Compatible with existing SMB layout but requires pad revision due to larger DO-214AB footprint (0.295" × 0.230") | Select if board redesign allows larger package and tighter VC tolerance is not required |
| 1.5SMC33AH | Same VWM/VBR specs, but DO-214AB package and 1.5 kW rating; VC = 53.3 V at 28.3 A | Higher power handling suits 24 V industrial PLC backplanes where multi-event surge immunity is critical | Choose when system-level testing shows repeated 10/1000 µs surges exceed 600 W margin |
Compared with SMBG33HE3/5B, SMBJ33AHE3/5B offers identical electrical protection in a physically larger package, while 1.5SMC33AH provides 2.5× higher peak power at the cost of increased board area and thermal mass - both require layout verification but deliver validated clamping performance for 33 V systems.
Availability
SMBG33HE3/5B is available at Aetrix Electronics and suitable for automotive electronic control units, industrial sensor interfaces, and telecom DC power interfaces requiring stable component supply with AEC-Q101 assurance and traceable RoHS compliance.
Supply support for SMBG33HE3/5B 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, and protection devices with emphasis on reliability, automotive qualification, and high-volume manufacturability.
The SMBG series was engineered specifically for space-constrained, high-reliability transient suppression in automotive and industrial environments - prioritizing low-profile packaging, AEC-Q101 validation, and consistent clamping under thermal stress.
FAQ
What is the clamping voltage of SMBG33HE3/5B and how is it measured?
The SMBG33HE3/5B has a maximum clamping voltage (VC) of 53.3 V, measured at a peak pulse current (IPPM) of 11.3 A using a 10/1000 µs waveform per IEC 61000-4-5. This value is guaranteed across the full operating temperature range (-55 °C to +150 °C) and reflects the actual voltage seen by protected circuitry during surge events - critical for validating compatibility with downstream 36 V-rated ICs.
Is SMBG33HE3/5B qualified for automotive use?
Yes, SMBG33HE3/5B carries the HE3 suffix, indicating full AEC-Q101 qualification per Vishay's documentation (Document Number 88456). It has passed stress tests including high-temperature reverse bias, temperature cycling, and humidity bias, making it suitable for under-hood engine control modules, body electronics, and ADAS sensor nodes where reliability is mandated.
What does the "5B" in SMBG33HE3/5B indicate?
The "5B" denotes the packaging configuration: 13-inch diameter plastic tape and reel, containing 3200 units per reel. This format supports high-speed automated placement in SMT lines and aligns with IPC-7351 standards for DO-215AA (SMBG) footprint registration - distinct from the "52" code used for 7-inch reels with 750 units.
How does SMBG33HE3/5B differ from uni-directional SMBJ33AHE3/5B?
SMBG33HE3/5B uses the smaller DO-215AA (SMBG) package (0.255" × 0.155"), while SMBJ33AHE3/5B uses DO-214AB (SMB) with larger dimensions (0.295" × 0.230"). Both share 33 V VWM, 600 W PPPM, and AEC-Q101 qualification, but SMBG33HE3/5B offers superior power density and fits tighter layouts - confirmed by Vishay's mechanical drawings and ordering tables.
What is the maximum junction temperature rating for SMBG33HE3/5B?
The SMBG33HE3/5B has a maximum junction temperature (TJ) rating of +150 °C, validated per its thermal characteristics table and derating curves. This allows operation in high-ambient environments such as automotive engine compartments or industrial motor drive enclosures - provided PCB copper pad area meets the 0.2" × 0.2" (5.0 mm × 5.0 mm) minimum recommendation for thermal dissipation.
SMBG33HE3/5B 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):
- 33V
- Voltage - Breakdown (Min):
- 36.7V
- Voltage - Clamping (Max) @ Ipp:
- 59V
- Current - Peak Pulse (10/1000µs):
- 10.2A
- 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)
SMBG33HE3/5B FAQ
1.How can I place an order for SMBG33HE3/5B through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBG33HE3/5B 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 SMBG33HE3/5B reliable?
The price and inventory of SMBG33HE3/5B are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBG33HE3/5B is usually 5 days.
3.What payment methods are accepted for SMBG33HE3/5B?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBG33HE3/5B transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBG33HE3/5B?
SMBG33HE3/5B orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBG33HE3/5B 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 SMBG33HE3/5B?
For technical support, including SMBG33HE3/5B datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBG33HE3/5B requirements.
6.How does Aetrix verify that SMBG33HE3/5B is sourced from the original manufacturer or authorized distributors?
All SMBG33HE3/5B 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 SMBG33HE3/5B meets industry standards.
7.What is the process for return or replacement of SMBG33HE3/5B?
All SMBG33HE3/5B units undergo pre-shipment inspection (PSI). If there is an issue with SMBG33HE3/5B, 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 SMBG33HE3/5B part is unused and in its original packaging.
Return procedure for SMBG33HE3/5B:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBG33HE3/5B Tags
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