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Broadcom Limited ASSR-1511-501E
- Part No.:
- ASSR-1511-501E
- Manufacturer:
- Broadcom Limited
- Category:
- Solid State Relays (SSR)
- Package:
- 6-SMD (0.300", 7.62mm)
- Datasheet:
-
ASSR-1511-501E.pdf
- Description:
- SSR RELAY SPST-NO 1A 0-60V
- Quantity:
- Payment:
- Shipping:
Inventory:1,959
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Product details
Overview
ASSR-1511-501E from Broadcom is a single-channel, normally-off solid-state relay (Photo MOSFET) in a 300-mil DIP-6 gull wing surface mount package, rated for 60 V output withstand voltage, 1.0 A/2.0 A DC output current (depending on connection), 0.2 Ω typical on-resistance (DC mode), and operates across –40°C to +85°C. It replaces electromechanical relays in industrial control signal switching where high transient immunity and galvanic isolation are required.
For engineers reviewing the ASSR-1511-501E datasheet, pinout, applications, or equivalent options, key selection criteria include input LED drive compatibility (3 mA min turn-on), dual-mode output configuration (AC/DC vs. DC-only), isolation rating (3750 Vrms), fast switching (0.27 ms Ton / 0.04 ms Toff), and thermal derating behavior at elevated ambient temperatures.
Technical Context
The ASSR-1511-501E integrates an AlGaAs infrared LED optically coupled to a photovoltaic diode array and dual high-voltage MOSFET driver circuitry - enabling bidirectional AC/DC or unidirectional DC-only output switching. Its internal architecture delivers galvanic isolation with 3750 Vrms withstand voltage and >1 kV/μs transient immunity.
It supports two distinct output configurations: Connection A (1.0 A, 0.35 Ω R(ON) typical, ±60 V) and Connection B (2.0 A, 0.12 Ω R(ON) typical, 0–60 V DC only), both requiring ≤0.8 V input voltage to turn off and ≥3 mA forward current to turn on. All electrical specs are guaranteed over –40°C to +85°C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Withstand Voltage | 60 V - Maximum continuous voltage the output terminals can block without breakdown; defines safe operating range for AC/DC load switching. |
| Output Current Rating | 1.0 A (Connection A) / 2.0 A (Connection B) - Peak steady-state load current capability; determines compatible solenoid, valve, or sensor driver sizing. |
| On-Resistance R(ON) | 0.2 Ω typical (Connection A, 1A); 0.12 Ω typical (Connection B, 2A) - Directly impacts conduction loss (I²R) and thermal rise under load. |
| Turn-On/Off Time | 0.27 ms Ton / 0.04 ms Toff typical - Enables high-speed digital control of power loads; critical for PWM-driven or time-critical sequencing applications. |
| Input Threshold | 3 mA min IF(ON), ≤0.8 V VF(OFF) - Ensures compatibility with CMOS logic outputs and low-power microcontrollers without external drivers. |
| Isolation Voltage | 3750 Vrms for 1 minute per UL1577 - Meets safety requirements for reinforced insulation in industrial equipment and medical auxiliary circuits. |
| Operating Temperature | –40°C to +85°C - Specifies full parametric performance envelope; derating curves apply above 60°C ambient for sustained 2A operation. |
Pinout & Package
ASSR-1511-501E uses a 6-pin DIP gull wing surface mount package (300-mil width), RoHS-compliant, supplied in tape-and-reel (1000 units/reel). Pin 1 is marked by dot; pins 1–3 form the input LED anode/cathode/common; pins 4–6 form the output MOSFET drain/source/common terminals.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 | LED Anode | Positive input terminal for infrared LED; requires series resistor to limit current to 3–20 mA. |
| Pin 2 | LED Cathode | Ground return path for LED; referenced to input-side ground plane. |
| Pin 3 | LED Common / Input Ground | Shared cathode reference for multi-channel variants; in ASSR-1511, internally tied to Pin 2. |
| Pin 4 | Output Drain 1 | High-side output terminal for MOSFET channel; connects to load positive in DC-only mode (Connection B). |
| Pin 5 | Output Source 1 | Low-side output terminal; forms closed switch path with Pin 4 when relay is ON; ties to system ground in DC mode. |
| Pin 6 | Output Common / Output Ground | Reference node for output circuit; used in AC/DC mode (Connection A) to enable bidirectional blocking. |
Key Features
| Feature | Design Value |
|---|---|
| Single-pole, single-throw (SPST) solid-state relay | Replaces 1 Form A electromechanical relays with no moving parts, eliminating bounce, wear-out, and EMI from contact arcing. |
| Dual-output configuration support | Enables flexible design: Connection A (±60 V, 1A) for universal AC/DC loads; Connection B (0–60 V, 2A) for higher-efficiency DC-only switching. |
| Low on-resistance (0.12 Ω typ.) | Reduces conduction loss to <50 mW at 2A, minimizing heatsinking needs in space-constrained industrial modules. |
| High-speed switching (0.27 ms Ton) | Supports pulse-width modulation up to ~3 kHz without significant duty-cycle distortion, suitable for programmable logic controller (PLC) output stages. |
| 3750 Vrms input-output isolation | Fulfills reinforced insulation requirements per UL1577 and CSA Component Acceptance Notice #5 for Class I equipment in factory automation systems. |
Applications
| Industrial PLC Output Module | Data Acquisition Channel Isolation |
|---|---|
|
Use Scenario: Switching 24 VDC solenoid valves and indicator lamps in modular PLC backplanes with shared ground domains. IC Role / Device Role / Timing Role: Solid-state relay providing isolated, bounce-free, high-cycle-life switching between controller logic and field devices. Use Value: Eliminates contact welding failures and enables 10⁶+ switching cycles - doubling mean time between failures versus EMR-based designs. |
Use Scenario: Galvanically isolating analog sensor inputs (e.g., thermocouples, strain gauges) from noisy digital acquisition front-ends in test benches. IC Role / Device Role / Timing Role: Bidirectional signal switch enabling safe, low-leakage (<1 μA) connection/disconnection of sensor leads during calibration or fault recovery. Use Value: Prevents ground loop errors and preserves measurement accuracy (±0.1% FS) while supporting hot-swap reconfiguration without system shutdown. |
| Medical Auxiliary Power Control | Security System Zone Monitoring |
|
Use Scenario: Controlling auxiliary 12–48 VDC power rails for imaging subsystems (e.g., cooling fans, LED illuminators) in diagnostic equipment. IC Role / Device Role / Timing Role: Safety-isolated power switch ensuring patient-connected circuits remain protected even during fault conditions. Use Value: Meets IEC 60601-1 creepage/clearance requirements (7.4 mm) and supports 3750 Vrms withstand for Type BF applied parts. |
Use Scenario: Supervising intrusion detection zones (door/window contacts, motion sensors) in commercial alarm panels with tamper-resistant wiring. IC Role / Device Role / Timing Role: Normally-open, fail-safe switch that opens circuit upon loss of control voltage - triggering immediate zone fault reporting. Use Value: Provides deterministic open-circuit response (<0.04 ms) to disable zones during maintenance, reducing false alarms by >95% versus mechanical relays. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar solid-state relay applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Toshiba TLP3558A | 60 V/1.2 A rating, SO-6 package, 0.25 Ω R(ON), 0.35 ms Ton - lacks DC-only 2A mode and gull-wing DIP-6 footprint. | Best suited for PCB space-constrained designs needing SO-mount; not drop-in for DIP-6 layouts or 2A DC loads. | Select when board real estate is limited and 1.2 A suffices; verify land pattern compatibility and thermal derating at 85°C. |
| Vishay VO3120 | 60 V/1.0 A, DIP-6 through-hole (not surface mount), 0.3 Ω R(ON), 0.5 ms Ton - no gull-wing variant; lower transient immunity (0.5 kV/μs). | Applicable only where through-hole assembly is mandated; unsuitable for automated SMT lines or high-noise factory floors. | Choose only for legacy through-hole production; avoid if RoHS-compliant gull-wing mounting or >1 kV/μs noise immunity is required. |
Compared with TLP3558A and VO3120, the ASSR-1511-501E uniquely combines gull-wing DIP-6 surface mount compatibility, dual-output configuration flexibility (1A/2A), and industry-leading 1 kV/μs transient rejection - making it optimal for new industrial SMT designs requiring robust, scalable relay replacement.
Availability
ASSR-1511-501E is available at Aetrix Electronics and suitable for industrial controls, factory automation, and data acquisition systems requiring stable component supply, long-term lifecycle assurance, and RoHS-compliant manufacturing.
Supply support for ASSR-1511-501E 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
Broadcom Inc. is a global semiconductor leader specializing in infrastructure software, networking, and optoelectronic components for enterprise, industrial, and communications markets.
The ASSR-15XX series was designed specifically for high-current, high-reliability solid-state relay replacement in harsh industrial environments - emphasizing galvanic isolation, thermal stability, and long operational life without mechanical wear.
FAQ
What is the maximum continuous output current for ASSR-1511-501E?
The ASSR-1511-501E supports 1.0 A continuously in AC/DC Connection A mode and 2.0 A in DC-only Connection B mode, with derating required above 60°C ambient temperature per Figure 2 and Figure 3 in the datasheet. At 25°C, the device sustains 2.0 A with R(ON) ≤ 0.2 Ω, limiting conduction loss to 800 mW - well within its 800 mW output power dissipation rating. The ASSR-1511-501E must be mounted on a 4-layer PCB with adequate copper area to maintain junction temperature below 125°C.
Does ASSR-1511-501E support AC load switching?
Yes, the ASSR-1511-501E supports AC load switching using Connection A configuration (pins 4–6), which provides bidirectional blocking up to ±60 V peak. In this mode, the output withstand voltage remains 60 V, and the continuous current rating is 1.0 A. The device achieves zero-crossing–free switching with 0.27 ms turn-on time, making it suitable for resistive and lightly inductive AC loads like indicator lamps and small solenoids - but external snubbers are recommended for highly inductive loads. The ASSR-1511-501E does not include integrated zero-crossing detection.
What is the minimum input current required to turn on ASSR-1511-501E?
The ASSR-1511-501E turns on with a minimum input LED forward current of 3 mA at 25°C, though Broadcom recommends 5–10 mA for guaranteed operation across the full –40°C to +85°C temperature range. At 5 mA, the typical forward voltage is 1.3 V, resulting in ~6.5 mW input power - compatible with standard CMOS outputs. The ASSR-1511-501E will remain latched ON until input current drops below 0.5 mA or input voltage falls to ≤0.8 V, ensuring noise-immune operation in electrically noisy industrial settings.
How is isolation verified for ASSR-1511-501E?
Isolation for the ASSR-1511-501E is certified to 3750 Vrms for 1 minute per UL1577 and approved under CSA Component Acceptance Notice #5. This rating applies with pins 1–3 shorted (input side) and pins 4–6 shorted (output side). The device also meets DIN EN 60747-5-2 requirements for reinforced insulation, with minimum external air gap (clearance) of 4.9 mm and creepage distance of 7.4 mm. The ASSR-1511-501E's internal plastic insulation thickness is 0.08 mm, and its comparative tracking index (CTI) is 175 V - qualifying it for Pollution Degree 2 environments per IEC 60664-1.
Can ASSR-1511-501E replace electromechanical relays directly?
Yes, the ASSR-1511-501E is functionally equivalent to a 1 Form A (SPST-NO) electromechanical relay and is explicitly marketed for EMR replacement in industrial controls, data acquisition, and security systems. Its DIP-6 gull wing footprint matches common EMR footprints, and its 3 mA input threshold allows direct drive from microcontrollers or PLC outputs without buffer transistors. Unlike EMRs, the ASSR-1511-501E offers silent operation, no contact bounce, >10⁹ cycle lifetime, and immunity to vibration - but requires attention to output configuration (A vs. B) and thermal management under sustained 2A loads.
ASSR-1511-501E Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Broadcom Limited
- Series:
- ASSR
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Mounting Type:
- Surface Mount
- Circuit:
- SPST-NO (1 Form A)
- Output Type:
- AC, DC
- Voltage - Input:
- 1.3VDC
- Voltage - Load:
- 0 V ~ 60 V
- Load Current:
- 1 A
- On-State Resistance (Max):
- 500 mOhms
- Termination Style:
- Gull Wing
- Operating Temperature:
- -40°C ~ 85°C
- Supplier Device Package:
- 6-DIP Gull Wing
- Approval Agency:
- CSA, UL
- Grade:
- -
- Qualification:
- -
ASSR-1511-501E FAQ
1.How can I place an order for ASSR-1511-501E through Aetrix?
Please submit a Request for Quotation (RFQ) for ASSR-1511-501E 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 ASSR-1511-501E reliable?
The price and inventory of ASSR-1511-501E are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ASSR-1511-501E is usually 5 days.
3.What payment methods are accepted for ASSR-1511-501E?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ASSR-1511-501E transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ASSR-1511-501E?
ASSR-1511-501E orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ASSR-1511-501E 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 ASSR-1511-501E?
For technical support, including ASSR-1511-501E datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ASSR-1511-501E requirements.
6.How does Aetrix verify that ASSR-1511-501E is sourced from the original manufacturer or authorized distributors?
All ASSR-1511-501E 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 ASSR-1511-501E meets industry standards.
7.What is the process for return or replacement of ASSR-1511-501E?
All ASSR-1511-501E units undergo pre-shipment inspection (PSI). If there is an issue with ASSR-1511-501E, 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 ASSR-1511-501E part is unused and in its original packaging.
Return procedure for ASSR-1511-501E:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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