My Inquiry
My Account
Vishay General Semiconductor - Diodes Division SMB10J20HE3/52
- Part No.:
- SMB10J20HE3/52
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMB10J20HE3/52.pdf
- Description:
- TVS DIODE 20VWM 35.8VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:2,333
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
SMB10J20HE3/52 from Vishay General Semiconductor is a unidirectional transient voltage suppressor (TVS) diode in DO-214AA (SMB) package, designed for high-energy surge protection on DC power rails and signal lines. It features a 20 V stand-off voltage (VWM), 22.2–24.5 V breakdown voltage (VBR) at 1 mA, 32.4 V clamping voltage (VC) at 30.9 A peak pulse current (IPPM), and 1000 W peak pulse power (PPPM) with 10/1000 µs waveform. It is AEC-Q101 qualified and used in automotive power supply input stages.
For engineers reviewing the SMB10J20HE3/52 datasheet, SMB10J20HE3/52 pinout, SMB10J20HE3/52 application, or SMB10J20HE3/52 equivalent, key selection criteria include clamping performance under 30.9 A surge, unidirectional polarity with cathode band marking, RoHS-compliant AEC-Q101 qualification, and compatibility with automated SMT placement on 0.2" × 0.2" copper pads.
Technical Context
This TVS diode operates as a voltage-clamping protection device, conducting above its breakdown threshold to shunt transient energy away from downstream ICs. Its glass-passivated junction ensures stable leakage (<1.0 µA at VWM) and fast response time (<1 ns), while low incremental surge resistance enables effective suppression of inductive switching spikes.
The device is rated for -55 °C to +150 °C operating junction temperature and exhibits thermal resistance of 72 °C/W (junction-to-ambient) and 20 °C/W (junction-to-lead). Its MSL Level 1 rating supports lead-free reflow up to 260 °C peak, and matte tin-plated leads comply with J-STD-002 and JESD 22-B102 solderability standards.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 20 V - Maximum continuous reverse working voltage before clamping begins; defines safe operating DC rail voltage. |
| VBR (min/max) | 22.2 V / 24.5 V at 1 mA - Confirmed breakdown range ensures reliable turn-on margin above VWM. |
| VC @ IPPM | 32.4 V at 30.9 A - Clamping voltage during 10/1000 µs surge; limits stress on protected ICs. |
| PPPM | 1000 W - Peak pulse power handling capacity; determines survivability against IEC 61000-4-5 Level 4 surges. |
| ID @ VWM | ≤1.0 µA - Reverse leakage at stand-off voltage; ensures minimal quiescent power loss in battery-powered systems. |
| TJ max. | 150 °C - Maximum junction temperature; supports operation in under-hood automotive environments. |
| Package | DO-214AA (SMB) - Standard surface-mount outline with 0.205" × 0.130" footprint; compatible with IPC-7351B land pattern. |
Pinout & Package
DO-214AA (SMB) package: molded plastic case with cathode band marking on one end; two terminals - anode and cathode - aligned linearly. Matte tin-plated leads meet J-STD-002 solderability requirements. Mounting requires 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal per Vishay specification.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Surge return path | Connected to system ground or low-impedance reference; conducts transient current during overvoltage events. |
| Anode (unmarked end) | Protected line connection | Connected to input rail or signal line being protected; reverse-biased during normal operation. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing per JESD47. |
| Glass passivated junction | Ensures stable VBR tolerance and long-term leakage stability across temperature and life cycles. |
| MSL Level 1 (260 °C) | Enables single-reflow assembly without moisture sensitivity concerns; eliminates bake requirement. |
| Low clamping ratio (VC/VBR ≈ 1.45) | Minimizes overvoltage overshoot during transients, improving protection margin for 24 V automotive ICs. |
| Uni-directional polarity | Provides DC blocking in one direction while enabling precise clamping on positive-going surges only. |
Applications
| Automotive Power Input Protection | Industrial PLC Digital I/O Protection |
|---|---|
|
Use Scenario: Protecting 24 V power input stage of body control module (BCM) against load dump and jump-start surges. IC Role / Device Role / Timing Role: Primary clamping device placed at board entry point, upstream of DC-DC converter and LDO regulators. Use Value: Limits transient voltage to ≤32.4 V during 30.9 A surges, preventing damage to 36 V-rated input capacitors and regulator ICs. |
Use Scenario: Shielding 24 V digital input channels in programmable logic controller (PLC) against field-wiring induced transients. IC Role / Device Role / Timing Role: Standoff protection element mounted directly at connector interface, before optocoupler input stage. Use Value: Maintains <1.0 µA leakage at 20 V, ensuring clean logic-level detection while clamping 10/1000 µs surges to safe levels. |
| Automotive Sensor Power Rail | Telecom Power Feeding Interface |
|
Use Scenario: Securing 5–24 V supply to radar sensor modules exposed to alternator ripple and ignition noise. IC Role / Device Role / Timing Role: Secondary protection layer after bulk filtering, placed adjacent to sensor ASIC power pins. Use Value: Withstands repeated 1000 W pulses without degradation, supporting ASIL-B functional safety requirements. |
Use Scenario: Safeguarding PoE-powered equipment front-end against lightning-induced surges on 48 V DC feed lines. IC Role / Device Role / Timing Role: First-line transient suppressor on PSE-side power delivery path, before DC-DC isolation stage. Use Value: Delivers 32.4 V clamping at 30.9 A, meeting IEC 61000-4-5 4 kV surge immunity test requirements. |
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 DO-214AA package, identical VWM (20 V), VBR (22.2–24.5 V), and VC (32.4 V); differs in AEC-Q101 qualification (SMBJ20A-E3/52 is commercial grade only). | Lacks AEC-Q101 validation; unsuitable for automotive production but acceptable for industrial prototypes. | Select SMB10J20HE3/52 when automotive qualification and whisker-tested leads (JESD 201 Class 2) are required. |
| 1.5SMC20A | Higher package thermal resistance (RθJA = 110 °C/W vs. 72 °C/W); same electrical specs but larger DO-214AB (SMC) footprint. | Requires PCB layout change; less suitable for space-constrained automotive modules. | Choose SMB10J20HE3/52 for tighter board area and better thermal performance in high-density layouts. |
Compared with SMBJ20A-E3/52 and 1.5SMC20A, SMB10J20HE3/52 delivers automotive-grade reliability in a compact SMB outline with superior thermal dissipation-critical for sustained surge duty in engine bay electronics.
Availability
SMB10J20HE3/52 is available at Aetrix Electronics and suitable for automotive power input protection, industrial PLC I/O hardening, and telecom PoE feeding interfaces requiring stable component supply and AEC-Q101 compliance.
Supply support for SMB10J20HE3/52 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, and protection devices with emphasis on reliability, efficiency, and automotive qualification.
The SMB10J series targets high-reliability transient suppression in harsh environments, specifically engineered for AEC-Q101 compliance and robust surge handling in automotive and industrial power systems.
FAQ
What is the clamping voltage of SMB10J20HE3/52 under a 10/1000 µs surge?
The SMB10J20HE3/52 clamps to a maximum of 32.4 V when subjected to its rated peak pulse current of 30.9 A with a 10/1000 µs waveform. This value is measured per ANSI/IEEE C62.35 and verified at TA = 25 °C on standard 0.2" × 0.2" copper pads. The clamping voltage remains consistent across its qualified operating temperature range.
Is SMB10J20HE3/52 suitable for automotive applications?
Yes, SMB10J20HE3/52 is AEC-Q101 qualified and explicitly rated for automotive use. Its HE3 suffix denotes RoHS-compliant construction with JESD 201 Class 2 whisker resistance, and it meets MSL Level 1 for lead-free reflow. Vishay validates this part for under-hood environments with TJ ratings up to 150 °C.
How does the SMB10J20HE3/52 differ from the SMBJ20A-E3/52?
SMB10J20HE3/52 and SMBJ20A-E3/52 share identical electrical parameters (VWM = 20 V, VBR = 22.2–24.5 V, VC = 32.4 V) and DO-214AA package, but SMB10J20HE3/52 carries AEC-Q101 qualification and JESD 201 Class 2 whisker testing, whereas SMBJ20A-E3/52 is commercial-grade only. Both are unidirectional and RoHS-compliant.
What is the maximum reverse leakage current for SMB10J20HE3/52 at its stand-off voltage?
The SMB10J20HE3/52 exhibits a maximum reverse leakage current (ID) of 1.0 µA when biased at its 20 V stand-off voltage (VWM), measured at TA = 25 °C. This low leakage supports energy-sensitive applications such as always-on automotive modules and battery-backed industrial sensors.
Does SMB10J20HE3/52 require special PCB layout considerations?
Yes - Vishay specifies mounting on 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal to achieve rated 1000 W peak pulse power. Smaller pads reduce thermal dissipation and surge capability. The cathode band must be correctly oriented toward ground, and no thermal relief should be applied to the pads to maintain low-inductance surge paths.
SMB10J20HE3/52 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AA, SMB
- Series:
- TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 20V
- Voltage - Breakdown (Min):
- 22.2V
- Voltage - Clamping (Max) @ Ipp:
- 35.8V
- Current - Peak Pulse (10/1000µs):
- 27.9A
- Power - Peak Pulse:
- 1000W (1kW)
- 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 (SMB)
SMB10J20HE3/52 FAQ
1.How can I place an order for SMB10J20HE3/52 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMB10J20HE3/52 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 SMB10J20HE3/52 reliable?
The price and inventory of SMB10J20HE3/52 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMB10J20HE3/52 is usually 5 days.
3.What payment methods are accepted for SMB10J20HE3/52?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMB10J20HE3/52 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMB10J20HE3/52?
SMB10J20HE3/52 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMB10J20HE3/52 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 SMB10J20HE3/52?
For technical support, including SMB10J20HE3/52 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMB10J20HE3/52 requirements.
6.How does Aetrix verify that SMB10J20HE3/52 is sourced from the original manufacturer or authorized distributors?
All SMB10J20HE3/52 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 SMB10J20HE3/52 meets industry standards.
7.What is the process for return or replacement of SMB10J20HE3/52?
All SMB10J20HE3/52 units undergo pre-shipment inspection (PSI). If there is an issue with SMB10J20HE3/52, 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 SMB10J20HE3/52 part is unused and in its original packaging.
Return procedure for SMB10J20HE3/52:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMB10J20HE3/52 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
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…
