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Vishay General Semiconductor - Diodes Division SMBG20AHE3/5B
- Part No.:
- SMBG20AHE3/5B
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-215AA, SMB Gull Wing
- Datasheet:
-
SMBG20AHE3/5B.pdf
- Description:
- TVS DIODE 20VWM 32.4VC DO215AA
- Quantity:
- Payment:
- Shipping:
Inventory:6,179
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Product details
Overview
SMBG20AHE3/5B from Vishay General Semiconductor is a unidirectional surface-mount TransZORB® transient voltage suppressor (TVS) diode in SMBG (DO-215AA) package, rated for 20 V stand-off voltage (VWM), 22.2–24.5 V breakdown voltage (VBR at 1 mA), and 600 W peak pulse power (10/1000 µs). It clamps transients to ≤32.4 V at 18.5 A peak pulse current and is AEC-Q101 qualified for automotive electronics protection.
For engineers reviewing the SMBG20AHE3/5B datasheet, SMBG20AHE3/5B pinout, SMBG20AHE3/5B application, or SMBG20AHE3/5B equivalent, key selection criteria include unidirectional polarity, 1.0 µA max reverse leakage at 20 V, 150 °C max junction temperature, and RoHS-compliant, AEC-Q101-qualified construction for high-reliability automotive and industrial surge suppression.
Technical Context
This TVS diode operates as a clamping device in parallel with sensitive circuit nodes, activating when transient voltage exceeds its breakdown threshold to shunt surge current away from downstream components. Its glass-passivated junction ensures stable VBR tolerance (±5 %) and low incremental surge resistance, enabling consistent clamping performance under repetitive 0.01 % duty-cycle surges.
The SMBG20AHE3/5B uses a single-junction PN structure optimized for fast response (<1 ns), low capacitance (~100 pF at 0 V), and robust 100 A non-repetitive forward surge capability (8.3 ms half-sine). Thermal design relies on its 20 °C/W junction-to-lead resistance and 100 °C/W junction-to-ambient rating when mounted on 5.0 mm × 5.0 mm copper pads.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 20 V - Maximum continuous reverse operating voltage before clamping begins |
| VBR (min/max) | 22.2 V / 24.5 V at 1 mA - Confirmed breakdown range ensuring reliable turn-on margin above VWM |
| VC @ IPPM | 32.4 V at 18.5 A - Clamped voltage during 600 W transient, defining maximum stress on protected IC |
| IPPM | 18.5 A - Peak surge current handled with 10/1000 µs waveform, critical for IEC 61000-4-5 compliance |
| ID @ VWM | ≤1.0 µA - Ultra-low leakage preserves signal integrity in high-impedance sensor or data lines |
| TJ max | +150 °C - Enables operation in under-hood automotive environments without derating |
| Qualification | AEC-Q101 - Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD |
Pinout & Package
Package: SMBG (DO-215AA), surface-mount, gull-wing leads, matte tin-plated terminals solderable per J-STD-002. Cathode indicated by band; anode is unmarked end. Molding compound meets UL 94 V-0.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Surge return path | Connected to system ground or low-impedance return; carries full transient current during clamping |
| Anode (unbanded end) | Protected node connection | Connected to line being protected (e.g., CAN_H, power rail input); voltage referenced to cathode |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power (10/1000 µs) | Enables robust protection against IEC 61000-4-5 Level 4 surges (4 kV/2 Ω) on 12 V automotive buses |
| AEC-Q101 qualification | Validates long-term reliability under automotive thermal, mechanical, and electrical stress profiles |
| Glass passivated junction | Ensures stable VBR over lifetime and immunity to humidity-induced parameter drift |
| MSL Level 1 (260 °C peak) | Supports standard lead-free reflow without popcorn cracking or delamination |
| Low profile SMBG package | Reduces board space vs. SMA/SMB while maintaining thermal performance via enhanced pad layout |
Applications
| Automotive Power Line Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting 12 V battery-fed ECUs from load dump and alternator ripple transients. IC Role / Device Role / Timing Role: Unidirectional TVS placed between power rail and chassis ground to clamp positive-going surges. Use Value: Limits voltage to ≤32.4 V during 18.5 A transients, preventing damage to 36 V-rated DC-DC converters and microcontrollers. | Use Scenario: Safeguarding analog outputs of pressure/temperature sensors connected to PLC I/O modules. IC Role / Device Role / Timing Role: Parallel-connected clamping device on 4–20 mA current loop or 0–10 V output line. Use Value: Sub-1 ns response and ≤1.0 µA leakage preserve signal accuracy while absorbing 600 W lightning-induced surges. |
| Automotive CAN Bus Protection | Consumer Power Adapter Input Protection |
Use Scenario: Secondary-level surge suppression on CAN_H/CAN_L lines downstream of common-mode chokes. IC Role / Device Role / Timing Role: Unidirectional TVS on each line referenced to ground, complementing bidirectional common-mode TVS. Use Value: 20 V VWM allows safe operation across CAN's ±36 V common-mode range while clamping differential spikes. | Use Scenario: Input-stage protection for AC/DC adapters subjected to mains-borne surges per IEC 61000-4-5. IC Role / Device Role / Timing Role: Primary clamping element across bulk capacitor input, shunting energy before rectifier and controller. Use Value: 600 W rating handles 1.2/50 µs + 8/20 µs combined wave surges up to 2 kV without degradation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ20A-E3/52 | Same VWM/VBR/VC, but SMB (DO-214AA) package; 100 W lower PPPM (500 W) | Limited to lower-energy transients (e.g., IEC 61000-4-4); not AEC-Q101 qualified | Select when cost sensitivity outweighs automotive qualification or 600 W requirement |
| SMCJ20AHE3/5B | Same VWM/VBR, but SMC (DO-214AB) package; 1500 W PPPM, higher IPPM (39.5 A) | Better suited for high-energy industrial surges; larger footprint and thermal mass | Select when board space permits and >600 W surge handling is required |
Compared with SMBG20AHE3/5B, SMBJ20A-E3/52 offers lower cost and smaller height but sacrifices 100 W pulse power and automotive qualification; SMCJ20AHE3/5B delivers 2.5× pulse power in a larger package, trading board area for higher surge resilience in harsh environments.
Availability
SMBG20AHE3/5B is available at Aetrix Electronics and suitable for automotive control units, industrial sensor interfaces, CAN bus subsystems, and consumer power adapter designs requiring stable component supply with AEC-Q101 assurance and RoHS compliance.
Supply support for SMBG20AHE3/5B 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 application-specific optimization.
The SMBG TransZORB® series is designed for high-efficiency transient suppression in space-constrained, high-reliability applications-particularly automotive power distribution, industrial I/O, and communication interface protection where AEC-Q101 validation and precise clamping are mandatory.
FAQ
What is the maximum clamping voltage of SMBG20AHE3/5B under a 10/1000 µs surge?
The SMBG20AHE3/5B has a maximum clamping voltage (VC) of 32.4 V when subjected to its rated peak pulse current of 18.5 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. The SMBG20AHE3/5B maintains this clamping performance across its specified operating temperature range.
Is SMBG20AHE3/5B suitable for automotive applications?
Yes, SMBG20AHE3/5B is explicitly AEC-Q101 qualified, as confirmed in the "MECHANICAL DATA" section of Vishay document 88456. Its HE3 suffix denotes RoHS compliance and AEC-Q101 qualification, and it meets MSL Level 1 reflow requirements (260 °C peak). The SMBG20AHE3/5B is validated for under-hood and body-control module use where temperature, vibration, and surge immunity are critical.
What is the reverse leakage current specification for SMBG20AHE3/5B at its stand-off voltage?
The SMBG20AHE3/5B exhibits a maximum reverse leakage current (ID) of 1.0 µA at its 20 V stand-off voltage (VWM), as specified in the "ELECTRICAL CHARACTERISTICS" table for unidirectional devices. This ultra-low leakage ensures minimal power loss and signal distortion in high-impedance circuits such as sensor bias networks or precision analog inputs.
Does SMBG20AHE3/5B have polarity marking, and how is it identified?
Yes, SMBG20AHE3/5B is unidirectional and features a cathode band on the SMBG (DO-215AA) package, located near one end of the molded case. As stated in the "MECHANICAL DATA" section, "for unidirectional types the band denotes cathode end." The anode is the opposite, unmarked terminal. Correct orientation is essential for proper clamping function in DC-biased applications.
What packaging configuration does SMBG20AHE3/5B ship in?
SMBG20AHE3/5B ships in 13-inch diameter plastic tape and reel format, with a base quantity of 3200 units per reel, as defined in the "ORDERING INFORMATION" section of Vishay document 88456. The "5B" suffix explicitly denotes this delivery mode, supporting high-volume automated SMT placement without manual handling or repackaging.
SMBG20AHE3/5B 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:
- Active
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 20V
- Voltage - Breakdown (Min):
- 22.2V
- Voltage - Clamping (Max) @ Ipp:
- 32.4V
- Current - Peak Pulse (10/1000µs):
- 18.5A
- 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)
SMBG20AHE3/5B FAQ
1.How can I place an order for SMBG20AHE3/5B through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBG20AHE3/5B 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 SMBG20AHE3/5B reliable?
The price and inventory of SMBG20AHE3/5B are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBG20AHE3/5B is usually 5 days.
3.What payment methods are accepted for SMBG20AHE3/5B?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBG20AHE3/5B transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBG20AHE3/5B?
SMBG20AHE3/5B orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBG20AHE3/5B 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 SMBG20AHE3/5B?
For technical support, including SMBG20AHE3/5B datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBG20AHE3/5B requirements.
6.How does Aetrix verify that SMBG20AHE3/5B is sourced from the original manufacturer or authorized distributors?
All SMBG20AHE3/5B 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 SMBG20AHE3/5B meets industry standards.
7.What is the process for return or replacement of SMBG20AHE3/5B?
All SMBG20AHE3/5B units undergo pre-shipment inspection (PSI). If there is an issue with SMBG20AHE3/5B, 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 SMBG20AHE3/5B part is unused and in its original packaging.
Return procedure for SMBG20AHE3/5B:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBG20AHE3/5B Tags
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