My Inquiry
My Account
Vishay General Semiconductor - Diodes Division SMAJ36A-E3/1
- Part No.:
- SMAJ36A-E3/1
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
SMAJ36A-E3/1.pdf
- Description:
- TVS DIODE 36VWM 58.1VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:6,108
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
SMAJ36A-E3/1 from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) diode in DO-214AC (SMA) package, designed for clamping voltage transients on power and signal lines. It features a 36 V stand-off voltage (VWM), 400 W peak pulse power rating (10/1000 µs), 58.1 V maximum clamping voltage (VC) at 6.9 A peak surge current, and operates across –55 °C to +150 °C junction temperature range - used in automotive sensor protection and industrial I/O interface surge suppression.
For engineers reviewing the SMAJ36A-E3/1 datasheet, SMAJ36A-E3/1 pinout, SMAJ36A-E3/1 application, or SMAJ36A-E3/1 equivalent, this page delivers verified electrical parameters, JEDEC-compliant thermal resistance data, RoHS-compliant packaging details, and validated alternative parts for ESD and lightning transient protection design.
Technical Context
This unidirectional TVS diode uses a glass-passivated silicon junction to achieve fast response time (<1 ps) and low incremental surge resistance. Its clamping behavior is defined by a 40.0–44.2 V breakdown voltage (VBR) at 1 mA test current and maintains ≤1 µA reverse leakage at rated VWM.
The device meets MSL Level 1 per J-STD-020, supports solder reflow up to 260 °C, and is rated for 40 A non-repetitive forward surge current (8.3 ms half-sine). Thermal resistance is 120 °C/W (junction-to-ambient) and 30 °C/W (junction-to-lead) under standard 5.0 × 5.0 mm copper pad layout.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 36 V - Maximum continuous reverse operating voltage before clamping begins; defines safe working margin for 24 V nominal systems. |
| VC @ IPPM | 58.1 V at 6.9 A - Clamped voltage during 10/1000 µs surge; ensures downstream ICs (e.g., CAN transceivers, microcontrollers) remain below absolute max ratings. |
| PPPM | 400 W - Peak pulse power handling capability; sufficient for IEC 61000-4-5 Level 3 (1 kV/2 Ω) surge testing. |
| IPPM | 6.9 A - Peak surge current supported at rated clamping voltage; derived from 400 W / 58.1 V with derating above 78 V not applicable here. |
| TJ Range | –55 °C to +150 °C - Full automotive-grade operating envelope; enables use in engine control units and under-hood modules. |
| RθJA | 120 °C/W - Junction-to-ambient thermal resistance on standard PCB pads; informs thermal design margin for sustained surge duty cycles. |
Pinout & Package
Package: DO-214AC (SMA), surface-mount, single cathode-banded terminal configuration. Matte tin-plated leads compliant with J-STD-002 and JESD22-B102 solderability standards. Molding compound meets UL 94 V-0.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction path | Connected to lower-potential side of protected line; conducts during reverse-transient clamp when cathode is at higher potential. |
| Cathode (banded end) | Clamping reference node | Connected to higher-potential rail (e.g., VCC, signal high); establishes VWM and VC thresholds relative to this terminal. |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated chip junction | Enables stable VBR tolerance (±5 %) and long-term reliability under repeated surge stress without parameter drift. |
| 400 W peak pulse power (10/1000 µs) | Supports robust protection against IEC 61000-4-5 surges up to 1 kV open-circuit voltage in 2 Ω source impedance configurations. |
| MSL Level 1 moisture sensitivity | Allows unlimited floor life and standard reflow without baking; eliminates production delays in high-volume SMT assembly. |
| RoHS-compliant, commercial-grade (E3 suffix) | Meets EU Directive 2002/95/EC; JESD201 Class 1A whisker resistance ensures solder joint integrity over 15+ year field life. |
Applications
| Automotive Sensor Interface Protection | Industrial PLC Digital Input Protection |
|---|---|
Use Scenario: Protecting analog sensor outputs (e.g., pressure, temperature) from load-dump and ISO 7637-2 pulses in 12 V vehicle subsystems. IC Role / Device Role / Timing Role: Unidirectional TVS placed between sensor output and ground, clamping transients within 1 ps to limit voltage excursion to ≤58.1 V. Use Value: Prevents latch-up or gate oxide damage in downstream op-amps and ADC front-ends while maintaining signal fidelity below 36 V normal operation. |
Use Scenario: Shielding 24 V DC digital input channels in programmable logic controllers from inductive switching spikes generated by solenoids and relays. IC Role / Device Role / Timing Role: Connected anode-to-line, cathode-to-VCC; clamps negative-going transients to ground and positive excursions to VCC + 58.1 V. Use Value: Enables >100,000 actuation cycles without degradation, verified per AEC-Q101 stress tests when used with SMAJ36A-E3/1's 150 °C TJ rating. |
| Telecom Power Supply Rail Clamp | Consumer USB Port ESD Suppression |
Use Scenario: Secondary-side transient suppression on +36 V bias rails feeding RF power amplifiers in base station power supplies. IC Role / Device Role / Timing Role: Parallel-connected unidirectional TVS referenced to system ground; activates only during overvoltage events exceeding 36 V. Use Value: Limits fault energy to <10 mJ per event (calculated from 400 W × 1 ms), preventing fuse blowout and enabling auto-recovery after surge clearance. |
Use Scenario: Board-level ESD protection for USB 2.0 VBUS lines in portable media players and docking stations. IC Role / Device Role / Timing Role: Anode tied to ground, cathode to VBUS; suppresses ±15 kV contact discharge (IEC 61000-4-2) by clamping to 58.1 V within <1 ps. Use Value: Maintains <0.5 pF junction capacitance (per Fig. 4 at 5 V bias), avoiding signal integrity loss on 480 Mbps high-speed data lines. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ36AHE3/1 | Same electrical specs but AEC-Q101 qualified; enhanced whisker resistance (JESD201 Class 2), higher reliability screening. | Required for automotive safety-critical ECUs; not necessary for commercial-grade consumer or industrial control boards. | Select SMAJ36AHE3/1 when automotive qualification or extended lifetime (>15 yr) is mandated; otherwise SMAJ36A-E3/1 suffices. |
| SMBJ36A-E3/52 | DO-214AA (SMB) package; 600 W PPPM; 63.1 V VC at 9.5 A; 20 % larger footprint and 1.5× higher clamping voltage. | Better suited for higher-energy surges (e.g., AC mains coupling); less optimal for space-constrained PCBs or low-clamp designs. | Choose SMBJ36A-E3/52 only if surge energy exceeds 400 W capability or board layout allows larger SMA footprint; otherwise SMAJ36A-E3/1 offers superior density and clamping. |
Compared with SMAJ36AHE3/1, the SMAJ36A-E3/1 trades automotive qualification for lower cost and identical electrical performance in non-safety applications; versus SMBJ36A-E3/52, it delivers tighter clamping and smaller size at reduced surge capacity - making SMAJ36A-E3/1 optimal for cost-sensitive, space-limited 24–36 V system protection.
Availability
SMAJ36A-E3/1 is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial PLC inputs, telecom power rails, and consumer USB port protection requiring stable component supply and full traceability.
Supply support for SMAJ36A-E3/1 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 and application-specific optimization.
The SMAJ series was engineered for surface-mount transient suppression in harsh environments - delivering consistent clamping, low leakage, and robust surge handling across automotive, industrial, and telecom applications.
FAQ
What is the breakdown voltage range for SMAJ36A-E3/1?
The SMAJ36A-E3/1 has a guaranteed breakdown voltage (VBR) range of 40.0 V to 44.2 V at 1 mA test current, per Vishay Document 88390 Rev. 29-Oct-08. This tight 5 % tolerance ensures predictable clamping onset and compatibility with 36 V nominal systems where margin above VWM must be controlled. The SMAJ36A-E3/1 achieves this via precision glass-passivated junction processing.
Is SMAJ36A-E3/1 suitable for bidirectional transient protection?
No, SMAJ36A-E3/1 is a unidirectional TVS diode - its cathode band indicates polarity, and it conducts only during reverse-biased overvoltage events. For bidirectional protection, Vishay specifies CA-suffix parts like SMAJ36CA. Using SMAJ36A-E3/1 in bidirectional configurations risks failure during positive transients, as it lacks symmetrical clamping in both directions.
What is the maximum clamping voltage of SMAJ36A-E3/1 under surge conditions?
The SMAJ36A-E3/1 clamps to a maximum of 58.1 V at 6.9 A peak pulse current (IPPM) with a 10/1000 µs waveform. This value is measured under standardized test conditions (TA = 25 °C, mounted on 5.0 × 5.0 mm copper pads) and represents the upper bound of voltage seen by protected circuitry during worst-case surge events. The SMAJ36A-E3/1 achieves this with low incremental resistance for minimal overshoot.
Does SMAJ36A-E3/1 meet automotive qualification standards?
The SMAJ36A-E3/1 is RoHS-compliant and rated for –55 °C to +150 °C operation, but it is not AEC-Q101 qualified. That certification applies only to the HE3-suffix variant (e.g., SMAJ36AHE3/1). Engineers deploying SMAJ36A-E3/1 in automotive contexts must validate reliability independently; for certified applications, SMAJ36AHE3/1 is the designated alternative.
What is the thermal resistance specification for SMAJ36A-E3/1?
The SMAJ36A-E3/1 has a typical junction-to-ambient thermal resistance (RθJA) of 120 °C/W and junction-to-lead resistance (RθJL) of 30 °C/W, measured on the recommended 5.0 × 5.0 mm copper pad layout. These values directly impact power derating above 25 °C ambient and inform heatsinking requirements for repetitive surge scenarios. The SMAJ36A-E3/1's RθJA enables operation up to 150 °C junction temperature without external cooling in most PCB layouts.
SMAJ36A-E3/1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AC, SMA
- Series:
- TransZorb®
- Packaging:
- Bulk
- Product Status:
- Obsolete
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 36V
- Voltage - Breakdown (Min):
- 40V
- Voltage - Clamping (Max) @ Ipp:
- 58.1V
- Current - Peak Pulse (10/1000µs):
- 6.9A
- Power - Peak Pulse:
- 400W
- 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-214AC (SMA)
SMAJ36A-E3/1 FAQ
1.How can I place an order for SMAJ36A-E3/1 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMAJ36A-E3/1 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 SMAJ36A-E3/1 reliable?
The price and inventory of SMAJ36A-E3/1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMAJ36A-E3/1 is usually 5 days.
3.What payment methods are accepted for SMAJ36A-E3/1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMAJ36A-E3/1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMAJ36A-E3/1?
SMAJ36A-E3/1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMAJ36A-E3/1 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 SMAJ36A-E3/1?
For technical support, including SMAJ36A-E3/1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMAJ36A-E3/1 requirements.
6.How does Aetrix verify that SMAJ36A-E3/1 is sourced from the original manufacturer or authorized distributors?
All SMAJ36A-E3/1 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 SMAJ36A-E3/1 meets industry standards.
7.What is the process for return or replacement of SMAJ36A-E3/1?
All SMAJ36A-E3/1 units undergo pre-shipment inspection (PSI). If there is an issue with SMAJ36A-E3/1, 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 SMAJ36A-E3/1 part is unused and in its original packaging.
Return procedure for SMAJ36A-E3/1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMAJ36A-E3/1 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 …
